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設定ファイルの読み込み・保存に関するコードをSettingManagerクラスに移動
[opentween/open-tween.git] / OpenTween / Tween.cs
index cba318e..f508b6a 100644 (file)
@@ -41,6 +41,7 @@ using System.Media;
 using System.Net;
 using System.Net.Http;
 using System.Reflection;
+using System.Runtime.InteropServices;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading;
@@ -49,7 +50,9 @@ using System.Windows.Forms;
 using OpenTween.Api;
 using OpenTween.Api.DataModel;
 using OpenTween.Connection;
+using OpenTween.Models;
 using OpenTween.OpenTweenCustomControl;
+using OpenTween.Setting;
 using OpenTween.Thumbnail;
 
 namespace OpenTween
@@ -111,7 +114,7 @@ namespace OpenTween
 
         //設定ファイル関連
         //private SettingToConfig _cfg; //旧
-        private SettingLocal _cfgLocal;
+        internal SettingLocal _cfgLocal;
         private SettingCommon _cfgCommon;
 
         //twitter解析部
@@ -122,7 +125,7 @@ namespace OpenTween
         private GrowlHelper gh = new GrowlHelper(Application.ProductName);
 
         //サブ画面インスタンス
-        private SearchWordDialog SearchDialog = new SearchWordDialog();     //検索画面インスタンス
+        internal SearchWordDialog SearchDialog = new SearchWordDialog();     //検索画面インスタンス
         private OpenURL UrlDialog = new OpenURL();
         public AtIdSupplement AtIdSupl;     //@id補助
         public AtIdSupplement HashSupl;    //Hashtag補助
@@ -176,8 +179,6 @@ namespace OpenTween
         //時速表示用
         private List<DateTime> _postTimestamps = new List<DateTime>();
         private List<DateTime> _favTimestamps = new List<DateTime>();
-        private ConcurrentDictionary<DateTime, int> _tlTimestamps = new ConcurrentDictionary<DateTime, int>();
-        private int _tlCount;
 
         // 以下DrawItem関連
         private SolidBrush _brsHighLight = new SolidBrush(Color.FromKnownColor(KnownColor.Highlight));
@@ -263,6 +264,7 @@ namespace OpenTween
         private const int MAX_WORKER_THREADS = 20;
         private SemaphoreSlim workerSemaphore = new SemaphoreSlim(MAX_WORKER_THREADS);
         private CancellationTokenSource workerCts = new CancellationTokenSource();
+        private IProgress<string> workerProgress;
 
         private int UnreadCounter = -1;
         private int UnreadAtCounter = -1;
@@ -274,14 +276,10 @@ namespace OpenTween
         private bool osResumed = false;
 
         //////////////////////////////////////////////////////////////////////////////////////////////////////////
-        private string _postBrowserStatusText = "";
-
         private bool _colorize = false;
 
         private System.Timers.Timer TimerTimeline = new System.Timers.Timer();
 
-        private ImageListViewItem displayItem;
-
         private string recommendedStatusFooter;
 
         //URL短縮のUndo用
@@ -311,7 +309,7 @@ namespace OpenTween
         private Stack<Tuple<TabPage, PostClass>> selectPostChains = new Stack<Tuple<TabPage, PostClass>>(); //ポスト選択履歴
 
         //検索処理タイプ
-        private enum SEARCHTYPE
+        internal enum SEARCHTYPE
         {
             DialogSearch,
             NextSearch,
@@ -699,9 +697,6 @@ namespace OpenTween
 
             //Win32Api.SetProxy(HttpConnection.ProxyType.Specified, "127.0.0.1", 8080, "user", "pass")
 
-            new InternetSecurityManager(PostBrowser);
-            this.PostBrowser.AllowWebBrowserDrop = false;  // COMException を回避するため、ActiveX の初期化が終わってから設定する
-
             MyCommon.TwitterApiInfo.AccessLimitUpdated += TwitterApiStatus_AccessLimitUpdated;
             Microsoft.Win32.SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
 
@@ -776,13 +771,12 @@ namespace OpenTween
             if (this._cfgCommon.AutoShortUrlFirst < 0)
                 this._cfgCommon.AutoShortUrlFirst = MyCommon.UrlConverter.Uxnu;
 
-            HttpTwitter.TwitterUrl = this._cfgCommon.TwitterUrl;
+            TwitterApiConnection.RestApiHost = this._cfgCommon.TwitterApiHost;
             this.tw = new Twitter(this.twitterApi);
 
             //認証関連
             if (string.IsNullOrEmpty(this._cfgCommon.Token)) this._cfgCommon.UserName = "";
             tw.Initialize(this._cfgCommon.Token, this._cfgCommon.TokenSecret, this._cfgCommon.UserName, this._cfgCommon.UserId);
-            this.twitterApi.Initialize(this._cfgCommon.Token, this._cfgCommon.TokenSecret, this._cfgCommon.UserId, this._cfgCommon.UserName);
 
             _initial = true;
 
@@ -808,12 +802,13 @@ namespace OpenTween
 
             //Twitter用通信クラス初期化
             Networking.DefaultTimeout = TimeSpan.FromSeconds(this._cfgCommon.DefaultTimeOut);
+            Networking.UploadImageTimeout = TimeSpan.FromSeconds(this._cfgCommon.UploadImageTimeout);
             Networking.SetWebProxy(this._cfgLocal.ProxyType,
                 this._cfgLocal.ProxyAddress, this._cfgLocal.ProxyPort,
                 this._cfgLocal.ProxyUser, this._cfgLocal.ProxyPassword);
             Networking.ForceIPv4 = this._cfgCommon.ForceIPv4;
 
-            HttpTwitter.TwitterUrl = this._cfgCommon.TwitterUrl;
+            TwitterApiConnection.RestApiHost = this._cfgCommon.TwitterApiHost;
             tw.RestrictFavCheck = this._cfgCommon.RestrictFavCheck;
             tw.ReadOwnPost = this._cfgCommon.ReadOwnPost;
             tw.TrackWord = this._cfgCommon.TrackWord;
@@ -850,7 +845,7 @@ namespace OpenTween
             ImageSelector.Initialize(tw, this.tw.Configuration, _cfgCommon.UseImageServiceName, _cfgCommon.UseImageService);
 
             //ハッシュタグ/@id関連
-            AtIdSupl = new AtIdSupplement(SettingAtIdList.Load().AtIdList, "@");
+            AtIdSupl = new AtIdSupplement(SettingManager.AtIdList.AtIdList, "@");
             HashSupl = new AtIdSupplement(_cfgCommon.HashTags, "#");
             HashMgr = new HashtagManage(HashSupl,
                                     _cfgCommon.HashTags.ToArray(),
@@ -862,6 +857,7 @@ namespace OpenTween
 
             //アイコンリスト作成
             this.IconCache = new ImageCache();
+            this.tweetDetailsView.IconCache = this.IconCache;
 
             //フォント&文字色&背景色保持
             _fntUnread = this._cfgLocal.FontUnread;
@@ -981,9 +977,6 @@ namespace OpenTween
             this.StatusText.Multiline = false; // _cfgLocal.StatusMultiline の設定は後で反映される
             this.SplitContainer2.Panel2MinSize = this.StatusText.Height;
 
-            // NameLabel のフォントを OTBaseForm.GlobalFont に変更
-            this.NameLabel.Font = this.ReplaceToGlobalFont(this.NameLabel.Font);
-
             // 必要であれば、発言一覧と発言詳細部・入力欄の上下を入れ替える
             SplitContainer1.IsPanelInverted = !this._cfgCommon.StatusAreaAtBottom;
 
@@ -994,11 +987,6 @@ namespace OpenTween
                 UnreadStripMenuItem.Enabled = false;
             }
 
-            //発言詳細部の初期化
-            NameLabel.Text = "";
-            DateTimeLabel.Text = "";
-            SourceLinkLabel.Text = "";
-
             //リンク先URL表示部の初期化(画面左下)
             StatusLabelUrl.Text = "";
             //状態表示部の初期化(画面右下)
@@ -1055,66 +1043,20 @@ namespace OpenTween
             SetTabAlignment();
 
             //デフォルトタブの存在チェック、ない場合には追加
-            if (_statuses.GetTabByType(MyCommon.TabUsageType.Home) == null)
-            {
-                TabClass tab;
-                if (!_statuses.Tabs.TryGetValue(MyCommon.DEFAULTTAB.RECENT, out tab))
-                {
-                    _statuses.AddTab(MyCommon.DEFAULTTAB.RECENT, MyCommon.TabUsageType.Home, null);
-                }
-                else
-                {
-                    tab.TabType = MyCommon.TabUsageType.Home;
-                }
-            }
-            if (_statuses.GetTabByType(MyCommon.TabUsageType.Mentions) == null)
-            {
-                TabClass tab;
-                if (!_statuses.Tabs.TryGetValue(MyCommon.DEFAULTTAB.REPLY, out tab))
-                {
-                    _statuses.AddTab(MyCommon.DEFAULTTAB.REPLY, MyCommon.TabUsageType.Mentions, null);
-                }
-                else
-                {
-                    tab.TabType = MyCommon.TabUsageType.Mentions;
-                }
-            }
-            if (_statuses.GetTabByType(MyCommon.TabUsageType.DirectMessage) == null)
-            {
-                TabClass tab;
-                if (!_statuses.Tabs.TryGetValue(MyCommon.DEFAULTTAB.DM, out tab))
-                {
-                    _statuses.AddTab(MyCommon.DEFAULTTAB.DM, MyCommon.TabUsageType.DirectMessage, null);
-                }
-                else
-                {
-                    tab.TabType = MyCommon.TabUsageType.DirectMessage;
-                }
-            }
-            if (_statuses.GetTabByType(MyCommon.TabUsageType.Favorites) == null)
-            {
-                TabClass tab;
-                if (!_statuses.Tabs.TryGetValue(MyCommon.DEFAULTTAB.FAV, out tab))
-                {
-                    _statuses.AddTab(MyCommon.DEFAULTTAB.FAV, MyCommon.TabUsageType.Favorites, null);
-                }
-                else
-                {
-                    tab.TabType = MyCommon.TabUsageType.Favorites;
-                }
-            }
-            if (_statuses.GetTabByType(MyCommon.TabUsageType.Mute) == null)
-            {
-                TabClass tab;
-                if (!_statuses.Tabs.TryGetValue(MyCommon.DEFAULTTAB.MUTE, out tab))
-                {
-                    _statuses.AddTab(MyCommon.DEFAULTTAB.MUTE, MyCommon.TabUsageType.Mute, null);
-                }
-                else
-                {
-                    tab.TabType = MyCommon.TabUsageType.Mute;
-                }
-            }
+            if (this._statuses.GetTabByType<HomeTabModel>() == null)
+                this._statuses.AddTab(new HomeTabModel());
+
+            if (this._statuses.GetTabByType<MentionsTabModel>() == null)
+                this._statuses.AddTab(new MentionsTabModel());
+
+            if (this._statuses.GetTabByType<DirectMessagesTabModel>() == null)
+                this._statuses.AddTab(new DirectMessagesTabModel());
+
+            if (this._statuses.GetTabByType<FavoritesTabModel>() == null)
+                this._statuses.AddTab(new FavoritesTabModel());
+
+            if (this._statuses.GetTabByType<MuteTabModel>() == null)
+                this._statuses.AddTab(new MuteTabModel());
 
             foreach (var tab in _statuses.Tabs.Values)
             {
@@ -1122,11 +1064,7 @@ namespace OpenTween
                 if (tab.TabType == MyCommon.TabUsageType.Mute)
                     continue;
 
-                if (tab.TabType == MyCommon.TabUsageType.Undefined)
-                {
-                    tab.TabType = MyCommon.TabUsageType.UserDefined;
-                }
-                if (!AddNewTab(tab.TabName, true, tab.TabType, tab.ListInfo))
+                if (!AddNewTab(tab, startup: true))
                     throw new TabException(Properties.Resources.TweenMain_LoadText1);
             }
 
@@ -1220,9 +1158,9 @@ namespace OpenTween
             detailHtmlFormatHeader = detailHtmlFormatHeader
                     .Replace("%FONT_FAMILY%", _fntDetail.Name)
                     .Replace("%FONT_SIZE%", _fntDetail.Size.ToString())
-                    .Replace("%FONT_COLOR%", _clDetail.R.ToString() + "," + _clDetail.G.ToString() + "," + _clDetail.B.ToString())
-                    .Replace("%LINK_COLOR%", _clDetailLink.R.ToString() + "," + _clDetailLink.G.ToString() + "," + _clDetailLink.B.ToString())
-                    .Replace("%BG_COLOR%", _clDetailBackcolor.R.ToString() + "," + _clDetailBackcolor.G.ToString() + "," + _clDetailBackcolor.B.ToString())
+                    .Replace("%FONT_COLOR%", $"{_clDetail.R},{_clDetail.G},{_clDetail.B}")
+                    .Replace("%LINK_COLOR%", $"{_clDetailLink.R},{_clDetailLink.G},{_clDetailLink.B}")
+                    .Replace("%BG_COLOR%", $"{_clDetailBackcolor.R},{_clDetailBackcolor.G},{_clDetailBackcolor.B}")
                     .Replace("%BG_REPLY_COLOR%", $"{_clAtTo.R}, {_clAtTo.G}, {_clAtTo.B}");
         }
 
@@ -1260,49 +1198,79 @@ namespace OpenTween
 
         private void LoadConfig()
         {
-            _cfgCommon = SettingCommon.Load();
-            SettingCommon.Instance = this._cfgCommon;
-            if (_cfgCommon.UserAccounts == null || _cfgCommon.UserAccounts.Count == 0)
-            {
-                _cfgCommon.UserAccounts = new List<UserAccount>();
-                if (!string.IsNullOrEmpty(_cfgCommon.UserName))
-                {
-                    UserAccount account = new UserAccount();
-                    account.Username = _cfgCommon.UserName;
-                    account.UserId = _cfgCommon.UserId;
-                    account.Token = _cfgCommon.Token;
-                    account.TokenSecret = _cfgCommon.TokenSecret;
+            SettingManager.LoadAll();
 
-                    _cfgCommon.UserAccounts.Add(account);
-                }
-            }
-
-            _cfgLocal = SettingLocal.Load();
+            this._cfgCommon = SettingManager.Common;
+            this._cfgLocal = SettingManager.Local;
 
             // v1.2.4 以前の設定には ScaleDimension の項目がないため、現在の DPI と同じとして扱う
             if (_cfgLocal.ScaleDimension.IsEmpty)
                 _cfgLocal.ScaleDimension = this.CurrentAutoScaleDimensions;
 
-            List<TabClass> tabs = SettingTabs.Load().Tabs;
-            foreach (TabClass tb in tabs)
+            var tabSettings = SettingManager.Tabs;
+            foreach (var tabSetting in tabSettings.Tabs)
             {
-                try
+                TabModel tab;
+                switch (tabSetting.TabType)
                 {
-                    tb.FilterModified = false;
-                    _statuses.Tabs.Add(tb.TabName, tb);
+                    case MyCommon.TabUsageType.Home:
+                        tab = new HomeTabModel(tabSetting.TabName);
+                        break;
+                    case MyCommon.TabUsageType.Mentions:
+                        tab = new MentionsTabModel(tabSetting.TabName);
+                        break;
+                    case MyCommon.TabUsageType.DirectMessage:
+                        tab = new DirectMessagesTabModel(tabSetting.TabName);
+                        break;
+                    case MyCommon.TabUsageType.Favorites:
+                        tab = new FavoritesTabModel(tabSetting.TabName);
+                        break;
+                    case MyCommon.TabUsageType.UserDefined:
+                        tab = new FilterTabModel(tabSetting.TabName);
+                        break;
+                    case MyCommon.TabUsageType.UserTimeline:
+                        tab = new UserTimelineTabModel(tabSetting.TabName, tabSetting.User);
+                        break;
+                    case MyCommon.TabUsageType.PublicSearch:
+                        tab = new PublicSearchTabModel(tabSetting.TabName)
+                        {
+                            SearchWords = tabSetting.SearchWords,
+                            SearchLang = tabSetting.SearchLang,
+                        };
+                        break;
+                    case MyCommon.TabUsageType.Lists:
+                        tab = new ListTimelineTabModel(tabSetting.TabName, tabSetting.ListInfo);
+                        break;
+                    case MyCommon.TabUsageType.Mute:
+                        tab = new MuteTabModel(tabSetting.TabName);
+                        break;
+                    default:
+                        continue;
                 }
-                catch (Exception)
+
+                tab.UnreadManage = tabSetting.UnreadManage;
+                tab.Protected = tabSetting.Protected;
+                tab.Notify = tabSetting.Notify;
+                tab.SoundFile = tabSetting.SoundFile;
+
+                if (tab.IsDistributableTabType)
                 {
-                    tb.TabName = _statuses.MakeTabName("MyTab");
-                    _statuses.Tabs.Add(tb.TabName, tb);
+                    var filterTab = (FilterTabModel)tab;
+                    filterTab.FilterArray = tabSetting.FilterArray;
+                    filterTab.FilterModified = false;
                 }
+
+                if (this._statuses.ContainsTab(tab.TabName))
+                    tab.TabName = this._statuses.MakeTabName("MyTab");
+
+                this._statuses.AddTab(tab);
             }
             if (_statuses.Tabs.Count == 0)
             {
-                _statuses.AddTab(MyCommon.DEFAULTTAB.RECENT, MyCommon.TabUsageType.Home, null);
-                _statuses.AddTab(MyCommon.DEFAULTTAB.REPLY, MyCommon.TabUsageType.Mentions, null);
-                _statuses.AddTab(MyCommon.DEFAULTTAB.DM, MyCommon.TabUsageType.DirectMessage, null);
-                _statuses.AddTab(MyCommon.DEFAULTTAB.FAV, MyCommon.TabUsageType.Favorites, null);
+                _statuses.AddTab(new HomeTabModel());
+                _statuses.AddTab(new MentionsTabModel());
+                _statuses.AddTab(new DirectMessagesTabModel());
+                _statuses.AddTab(new FavoritesTabModel());
             }
         }
 
@@ -1423,8 +1391,10 @@ namespace OpenTween
 
         private void RefreshTimeline()
         {
+            var curTabModel = this._statuses.Tabs[this._curTab.Text];
+
             // 現在表示中のタブのスクロール位置を退避
-            var curListScroll = this.SaveListViewScroll(this._curList, this._statuses.Tabs[this._curTab.Text]);
+            var curListScroll = this.SaveListViewScroll(this._curList, curTabModel);
 
             // 各タブのリスト上の選択位置などを退避
             var listSelections = this.SaveListViewSelection();
@@ -1439,48 +1409,56 @@ namespace OpenTween
 
             if (MyCommon._endingFlag) return;
 
-            //リストに反映&選択状態復元
-            try
+            // リストに反映&選択状態復元
+            foreach (var tabPage in this.ListTab.TabPages.Cast<TabPage>())
             {
-                foreach (TabPage tab in ListTab.TabPages)
+                var listView = (DetailsListView)tabPage.Tag;
+                var tabModel = this._statuses.Tabs[tabPage.Text];
+
+                if (listView.VirtualListSize != tabModel.AllCount || isDelete)
                 {
-                    DetailsListView lst = (DetailsListView)tab.Tag;
-                    TabClass tabInfo = _statuses.Tabs[tab.Text];
-                    if (isDelete || lst.VirtualListSize != tabInfo.AllCount)
+                    using (ControlTransaction.Update(listView))
                     {
-                        using (ControlTransaction.Update(lst))
-                        {
-                            if (lst.Equals(_curList))
-                            {
-                                this.PurgeListViewItemCache();
-                            }
-                            try
-                            {
-                                lst.VirtualListSize = tabInfo.AllCount; //リスト件数更新
-                            }
-                            catch (Exception)
-                            {
-                                //アイコン描画不具合あり?
-                            }
+                        if (listView == this._curList)
+                            this.PurgeListViewItemCache();
 
-                            // 選択位置などを復元
-                            this.RestoreListViewSelection(lst, tabInfo, listSelections[tabInfo.TabName]);
+                        try
+                        {
+                            // リスト件数更新
+                            listView.VirtualListSize = tabModel.AllCount;
+                        }
+                        catch (NullReferenceException ex)
+                        {
+                            // WinForms 内部で ListView.set_TopItem が発生させている例外
+                            // https://ja.osdn.net/ticket/browse.php?group_id=6526&tid=36588
+                            MyCommon.TraceOut(ex, $"TabType: {tabModel.TabType}, Count: {tabModel.AllCount}, ListSize: {listView.VirtualListSize}");
                         }
+
+                        // 選択位置などを復元
+                        this.RestoreListViewSelection(listView, tabModel, listSelections[tabModel.TabName]);
                     }
-                    if (tabInfo.UnreadCount > 0)
-                        if (this._cfgCommon.TabIconDisp)
-                            if (tab.ImageIndex == -1) tab.ImageIndex = 0; //タブアイコン
                 }
-                if (!this._cfgCommon.TabIconDisp) ListTab.Refresh();
             }
-            catch (Exception)
+
+            if (addCount > 0)
             {
-                //ex.Data["Msg"] = "Ref1, UseAPI=" + SettingDialog.UseAPI.ToString();
-                //throw;
+                if (this._cfgCommon.TabIconDisp)
+                {
+                    foreach (var tabPage in this.ListTab.TabPages.Cast<TabPage>())
+                    {
+                        var tabModel = this._statuses.Tabs[tabPage.Text];
+                        if (tabModel.UnreadCount > 0 && tabPage.ImageIndex != 0)
+                            tabPage.ImageIndex = 0; // 未読アイコン
+                    }
+                }
+                else
+                {
+                    this.ListTab.Refresh();
+                }
             }
 
             // スクロール位置を復元
-            this.RestoreListViewScroll(this._curList, this._statuses.Tabs[this._curTab.Text], curListScroll);
+            this.RestoreListViewScroll(this._curList, curTabModel, curListScroll);
 
             //新着通知
             NotifyNewPosts(notifyPosts, soundFile, addCount, newMentionOrDm);
@@ -1516,7 +1494,7 @@ namespace OpenTween
         /// <summary>
         /// <see cref="ListView"/> のスクロール位置に関する情報を <see cref="ListViewScroll"/> として返します
         /// </summary>
-        private ListViewScroll SaveListViewScroll(DetailsListView listView, TabClass tab)
+        private ListViewScroll SaveListViewScroll(DetailsListView listView, TabModel tab)
         {
             var listScroll = new ListViewScroll
             {
@@ -1525,9 +1503,9 @@ namespace OpenTween
 
             if (listScroll.ScrollLockMode == ScrollLockMode.FixedToItem)
             {
-                var topItem = listView.TopItem;
-                if (topItem != null)
-                    listScroll.TopItemStatusId = tab.GetId(topItem.Index);
+                var topItemIndex = listView.TopItem?.Index ?? -1;
+                if (topItemIndex != -1 && topItemIndex < tab.AllCount)
+                    listScroll.TopItemStatusId = tab.GetStatusIdAt(topItemIndex);
             }
 
             return listScroll;
@@ -1591,59 +1569,62 @@ namespace OpenTween
                 var listView = (DetailsListView)tabPage.Tag;
                 var tab = _statuses.Tabs[tabPage.Text];
 
-                ListViewSelection listStatus;
-                if (listView.VirtualListSize != 0)
-                {
-                    listStatus = new ListViewSelection
-                    {
-                        SelectedStatusIds = this.GetSelectedStatusIds(listView, tab),
-                        FocusedStatusId = this.GetFocusedStatusId(listView, tab),
-                        SelectionMarkStatusId = this.GetSelectionMarkStatusId(listView, tab),
-                    };
-                }
-                else
-                {
-                    listStatus = new ListViewSelection
-                    {
-                        SelectedStatusIds = new long[0],
-                        SelectionMarkStatusId = null,
-                        FocusedStatusId = null,
-                    };
-                }
-
-                listsDict[tab.TabName] = listStatus;
+                listsDict[tab.TabName] = this.SaveListViewSelection(listView, tab);
             }
 
             return listsDict;
         }
 
-        private long[] GetSelectedStatusIds(DetailsListView listView, TabClass tab)
+        /// <summary>
+        /// <see cref="ListView"/> の選択状態を <see cref="ListViewSelection"/> として返します
+        /// </summary>
+        private ListViewSelection SaveListViewSelection(DetailsListView listView, TabModel tab)
+        {
+            if (listView.VirtualListSize == 0)
+            {
+                return new ListViewSelection
+                {
+                    SelectedStatusIds = new long[0],
+                    SelectionMarkStatusId = null,
+                    FocusedStatusId = null,
+                };
+            }
+
+            return new ListViewSelection
+            {
+                SelectedStatusIds = this.GetSelectedStatusIds(listView, tab),
+                FocusedStatusId = this.GetFocusedStatusId(listView, tab),
+                SelectionMarkStatusId = this.GetSelectionMarkStatusId(listView, tab),
+            };
+        }
+
+        private long[] GetSelectedStatusIds(DetailsListView listView, TabModel tab)
         {
             var selectedIndices = listView.SelectedIndices;
             if (selectedIndices.Count > 0 && selectedIndices.Count < 61)
-                return tab.GetId(selectedIndices);
+                return tab.GetStatusIdAt(selectedIndices.Cast<int>());
             else
                 return null;
         }
 
-        private long? GetFocusedStatusId(DetailsListView listView, TabClass tab)
+        private long? GetFocusedStatusId(DetailsListView listView, TabModel tab)
         {
-            var focusedItem = listView.FocusedItem;
+            var index = listView.FocusedItem?.Index ?? -1;
 
-            return focusedItem != null ? tab.GetId(focusedItem.Index) : (long?)null;
+            return index != -1 && index < tab.AllCount ? tab.GetStatusIdAt(index) : (long?)null;
         }
 
-        private long? GetSelectionMarkStatusId(DetailsListView listView, TabClass tab)
+        private long? GetSelectionMarkStatusId(DetailsListView listView, TabModel tab)
         {
-            var selectionMarkIndex = listView.SelectionMark;
+            var index = listView.SelectionMark;
 
-            return selectionMarkIndex != -1 ? tab.GetId(selectionMarkIndex) : (long?)null;
+            return index != -1 && index < tab.AllCount ? tab.GetStatusIdAt(index) : (long?)null;
         }
 
         /// <summary>
         /// <see cref="SaveListViewScroll"/> によって保存されたスクロール位置を復元します
         /// </summary>
-        private void RestoreListViewScroll(DetailsListView listView, TabClass tab, ListViewScroll listScroll)
+        private void RestoreListViewScroll(DetailsListView listView, TabModel tab, ListViewScroll listScroll)
         {
             if (listView.VirtualListSize == 0)
                 return;
@@ -1668,9 +1649,9 @@ namespace OpenTween
         }
 
         /// <summary>
-        /// <see cref="SaveListViewStatus"/> によって保存された選択状態を復元します
+        /// <see cref="SaveListViewSelection"/> によって保存された選択状態を復元します
         /// </summary>
-        private void RestoreListViewSelection(DetailsListView listView, TabClass tab, ListViewSelection listSelection)
+        private void RestoreListViewSelection(DetailsListView listView, TabModel tab, ListViewSelection listSelection)
         {
             // status_id から ListView 上のインデックスに変換
             int[] selectedIndices = null;
@@ -2251,9 +2232,10 @@ namespace OpenTween
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
+                var homeTab = this._statuses.GetTabByType<HomeTabModel>();
+                await homeTab.RefreshAsync(this.tw, loadMore, this._initial, this.workerProgress);
 
-                await this.GetHomeTimelineAsyncInternal(progress, this.workerCts.Token, loadMore);
+                this.RefreshTimeline();
             }
             catch (WebApiException ex)
             {
@@ -2266,71 +2248,6 @@ namespace OpenTween
             }
         }
 
-        private async Task GetHomeTimelineAsyncInternal(IProgress<string> p, CancellationToken ct, bool loadMore)
-        {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
-
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
-
-            p.Report(string.Format(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText5, loadMore ? -1 : 1));
-
-            await Task.Run(async () =>
-            {
-                await this.tw.GetTimelineApi(read, MyCommon.WORKERTYPE.Timeline, loadMore, this._initial)
-                    .ConfigureAwait(false);
-
-                // 新着時未読クリア
-                if (this._cfgCommon.ReadOldPosts)
-                    this._statuses.SetReadHomeTab();
-
-                var addCount = this._statuses.DistributePosts();
-
-                if (!this._initial)
-                    this.UpdateTimelineSpeed(addCount);
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText1);
-
-            this.RefreshTimeline();
-        }
-
-        /// <summary>
-        /// タイムラインに追加された発言件数を反映し、タイムラインの流速を更新します
-        /// </summary>
-        /// <param name="addCount">直前にタイムラインに追加した発言件数</param>
-        private void UpdateTimelineSpeed(int addCount)
-        {
-            var now = DateTime.Now;
-            this._tlTimestamps.AddOrUpdate(now, addCount, (k, v) => v + addCount);
-
-            var removeKeys = new List<DateTime>();
-            var oneHour = TimeSpan.FromHours(1);
-            var tlCount = 0;
-            foreach (var pair in this._tlTimestamps)
-            {
-                if (now - pair.Key > oneHour)
-                    removeKeys.Add(pair.Key);
-                else
-                    tlCount += pair.Value;
-            }
-            Interlocked.Exchange(ref this._tlCount, tlCount);
-
-            int _;
-            foreach (var key in removeKeys)
-                this._tlTimestamps.TryRemove(key, out _);
-        }
-
         private Task GetReplyAsync()
         {
             return this.GetReplyAsync(loadMore: false);
@@ -2342,9 +2259,10 @@ namespace OpenTween
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
+                var replyTab = this._statuses.GetTabByType<MentionsTabModel>();
+                await replyTab.RefreshAsync(this.tw, loadMore, this._initial, this.workerProgress);
 
-                await this.GetReplyAsyncInternal(progress, this.workerCts.Token, loadMore);
+                this.RefreshTimeline();
             }
             catch (WebApiException ex)
             {
@@ -2357,38 +2275,6 @@ namespace OpenTween
             }
         }
 
-        private async Task GetReplyAsyncInternal(IProgress<string> p, CancellationToken ct, bool loadMore)
-        {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
-
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
-
-            p.Report(string.Format(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText4, loadMore ? -1 : 1));
-
-            await Task.Run(async () =>
-            {
-                await this.tw.GetTimelineApi(read, MyCommon.WORKERTYPE.Reply, loadMore, this._initial)
-                    .ConfigureAwait(false);
-
-                this._statuses.DistributePosts();
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText9);
-
-            this.RefreshTimeline();
-        }
-
         private Task GetDirectMessagesAsync()
         {
             return this.GetDirectMessagesAsync(loadMore: false);
@@ -2400,9 +2286,10 @@ namespace OpenTween
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
+                var dmTab = this._statuses.GetTabByType<DirectMessagesTabModel>();
+                await dmTab.RefreshAsync(this.tw, loadMore, this._initial, this.workerProgress);
 
-                await this.GetDirectMessagesAsyncInternal(progress, this.workerCts.Token, loadMore);
+                this.RefreshTimeline();
             }
             catch (WebApiException ex)
             {
@@ -2415,40 +2302,6 @@ namespace OpenTween
             }
         }
 
-        private async Task GetDirectMessagesAsyncInternal(IProgress<string> p, CancellationToken ct, bool loadMore)
-        {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
-
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
-
-            p.Report(string.Format(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText8, loadMore ? -1 : 1));
-
-            await Task.Run(async () =>
-            {
-                await this.tw.GetDirectMessageApi(read, MyCommon.WORKERTYPE.DirectMessegeRcv, loadMore)
-                    .ConfigureAwait(false);
-                await this.tw.GetDirectMessageApi(read, MyCommon.WORKERTYPE.DirectMessegeSnt, loadMore)
-                    .ConfigureAwait(false);
-
-                this._statuses.DistributePosts();
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText11);
-
-            this.RefreshTimeline();
-        }
-
         private Task GetFavoritesAsync()
         {
             return this.GetFavoritesAsync(loadMore: false);
@@ -2460,9 +2313,10 @@ namespace OpenTween
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
+                var favTab = this._statuses.GetTabByType<FavoritesTabModel>();
+                await favTab.RefreshAsync(this.tw, loadMore, this._initial, this.workerProgress);
 
-                await this.GetFavoritesAsyncInternal(progress, this.workerCts.Token, loadMore);
+                this.RefreshTimeline();
             }
             catch (WebApiException ex)
             {
@@ -2475,312 +2329,147 @@ namespace OpenTween
             }
         }
 
-        private async Task GetFavoritesAsyncInternal(IProgress<string> p, CancellationToken ct, bool loadMore)
+        private Task GetPublicSearchAllAsync()
         {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
+            var tabs = this._statuses.GetTabsByType<PublicSearchTabModel>();
 
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
+            return this.GetPublicSearchAsync(tabs, loadMore: false);
+        }
 
-            p.Report(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText19);
+        private Task GetPublicSearchAsync(PublicSearchTabModel tab)
+        {
+            return this.GetPublicSearchAsync(tab, loadMore: false);
+        }
 
-            await Task.Run(() =>
-            {
-                this.tw.GetFavoritesApi(read, loadMore);
+        private Task GetPublicSearchAsync(PublicSearchTabModel tab, bool loadMore)
+        {
+            return this.GetPublicSearchAsync(new[] { tab }, loadMore);
+        }
 
-                this._statuses.DistributePosts();
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText20);
-
-            this.RefreshTimeline();
-        }
-
-        private Task GetPublicSearchAllAsync()
-        {
-            var tabs = this._statuses.GetTabsByType(MyCommon.TabUsageType.PublicSearch);
-
-            return this.GetPublicSearchAsync(tabs, loadMore: false);
-        }
-
-        private Task GetPublicSearchAsync(TabClass tab)
-        {
-            return this.GetPublicSearchAsync(tab, loadMore: false);
-        }
-
-        private Task GetPublicSearchAsync(TabClass tab, bool loadMore)
-        {
-            return this.GetPublicSearchAsync(new[] { tab }, loadMore);
-        }
-
-        private async Task GetPublicSearchAsync(IEnumerable<TabClass> tabs, bool loadMore)
-        {
-            await this.workerSemaphore.WaitAsync();
+        private async Task GetPublicSearchAsync(IEnumerable<PublicSearchTabModel> tabs, bool loadMore)
+        {
+            await this.workerSemaphore.WaitAsync();
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
-
-                await this.GetPublicSearchAsyncInternal(progress, this.workerCts.Token, tabs, loadMore);
-            }
-            catch (WebApiException ex)
-            {
-                this._myStatusError = true;
-                this.StatusLabel.Text = ex.Message;
-            }
-            finally
-            {
-                this.workerSemaphore.Release();
-            }
-        }
-
-        private async Task GetPublicSearchAsyncInternal(IProgress<string> p, CancellationToken ct, IEnumerable<TabClass> tabs, bool loadMore)
-        {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
-
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
-
-            p.Report("Search refreshing...");
-
-            await Task.Run(() =>
-            {
-                WebApiException lastException = null;
-
                 foreach (var tab in tabs)
                 {
                     try
                     {
-                        if (string.IsNullOrEmpty(tab.SearchWords))
-                            continue;
-
-                        this.tw.GetSearch(read, tab, false);
-
-                        if (loadMore)
-                            this.tw.GetSearch(read, tab, true);
+                        await tab.RefreshAsync(this.tw, loadMore, this._initial, this.workerProgress);
                     }
                     catch (WebApiException ex)
                     {
-                        lastException = ex;
+                        this._myStatusError = true;
+                        this.StatusLabel.Text = $"Err:{ex.Message}(GetSearch)";
                     }
                 }
 
-                this._statuses.DistributePosts();
-
-                if (lastException != null)
-                    throw new WebApiException(lastException.Message, lastException);
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report("Search refreshed");
-
-            this.RefreshTimeline();
+                this.RefreshTimeline();
+            }
+            finally
+            {
+                this.workerSemaphore.Release();
+            }
         }
 
         private Task GetUserTimelineAllAsync()
         {
-            var tabs = this._statuses.GetTabsByType(MyCommon.TabUsageType.UserTimeline);
+            var tabs = this._statuses.GetTabsByType<UserTimelineTabModel>();
 
             return this.GetUserTimelineAsync(tabs, loadMore: false);
         }
 
-        private Task GetUserTimelineAsync(TabClass tab)
+        private Task GetUserTimelineAsync(UserTimelineTabModel tab)
         {
             return this.GetUserTimelineAsync(tab, loadMore: false);
         }
 
-        private Task GetUserTimelineAsync(TabClass tab, bool loadMore)
+        private Task GetUserTimelineAsync(UserTimelineTabModel tab, bool loadMore)
         {
             return this.GetUserTimelineAsync(new[] { tab }, loadMore);
         }
 
-        private async Task GetUserTimelineAsync(IEnumerable<TabClass> tabs, bool loadMore)
+        private async Task GetUserTimelineAsync(IEnumerable<UserTimelineTabModel> tabs, bool loadMore)
         {
             await this.workerSemaphore.WaitAsync();
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
-
-                await this.GetUserTimelineAsyncInternal(progress, this.workerCts.Token, tabs, loadMore);
-            }
-            catch (WebApiException ex)
-            {
-                this._myStatusError = true;
-                this.StatusLabel.Text = $"Err:{ex.Message}(GetUserTimeline)";
-            }
-            finally
-            {
-                this.workerSemaphore.Release();
-            }
-        }
-
-        private async Task GetUserTimelineAsyncInternal(IProgress<string> p, CancellationToken ct, IEnumerable<TabClass> tabs, bool loadMore)
-        {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
-
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
-
-            p.Report("UserTimeline refreshing...");
-
-            await Task.Run(async () =>
-            {
-                WebApiException lastException = null;
-
                 foreach (var tab in tabs)
                 {
                     try
                     {
-                        if (string.IsNullOrEmpty(tab.User))
-                            continue;
-
-                        await this.tw.GetUserTimelineApi(read, tab.User, tab, loadMore)
-                            .ConfigureAwait(false);
+                        await tab.RefreshAsync(this.tw, loadMore, this._initial, this.workerProgress);
                     }
                     catch (WebApiException ex)
                     {
-                        lastException = ex;
+                        this._myStatusError = true;
+                        this.StatusLabel.Text = $"Err:{ex.Message}(GetUserTimeline)";
                     }
                 }
 
-                this._statuses.DistributePosts();
-
-                if (lastException != null)
-                    throw new WebApiException(lastException.Message, lastException);
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report("UserTimeline refreshed");
-
-            this.RefreshTimeline();
+                this.RefreshTimeline();
+            }
+            finally
+            {
+                this.workerSemaphore.Release();
+            }
         }
 
         private Task GetListTimelineAllAsync()
         {
-            var tabs = this._statuses.GetTabsByType(MyCommon.TabUsageType.Lists);
+            var tabs = this._statuses.GetTabsByType<ListTimelineTabModel>();
 
             return this.GetListTimelineAsync(tabs, loadMore: false);
         }
 
-        private Task GetListTimelineAsync(TabClass tab)
+        private Task GetListTimelineAsync(ListTimelineTabModel tab)
         {
             return this.GetListTimelineAsync(tab, loadMore: false);
         }
 
-        private Task GetListTimelineAsync(TabClass tab, bool loadMore)
+        private Task GetListTimelineAsync(ListTimelineTabModel tab, bool loadMore)
         {
             return this.GetListTimelineAsync(new[] { tab }, loadMore);
         }
 
-        private async Task GetListTimelineAsync(IEnumerable<TabClass> tabs, bool loadMore)
+        private async Task GetListTimelineAsync(IEnumerable<ListTimelineTabModel> tabs, bool loadMore)
         {
             await this.workerSemaphore.WaitAsync();
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
-
-                await this.GetListTimelineAsyncInternal(progress, this.workerCts.Token, tabs, loadMore);
-            }
-            catch (WebApiException ex)
-            {
-                this._myStatusError = true;
-                this.StatusLabel.Text = $"Err:{ex.Message}(GetListStatus)";
-            }
-            finally
-            {
-                this.workerSemaphore.Release();
-            }
-        }
-
-        private async Task GetListTimelineAsyncInternal(IProgress<string> p, CancellationToken ct, IEnumerable<TabClass> tabs, bool loadMore)
-        {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
-
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
-
-            p.Report("List refreshing...");
-
-            await Task.Run(async () =>
-            {
-                WebApiException lastException = null;
-
                 foreach (var tab in tabs)
                 {
                     try
                     {
-                        if (tab.ListInfo == null || tab.ListInfo.Id == 0)
-                            continue;
-
-                        await this.tw.GetListStatus(read, tab, loadMore, this._initial)
-                            .ConfigureAwait(false);
+                        await tab.RefreshAsync(this.tw, loadMore, this._initial, this.workerProgress);
                     }
                     catch (WebApiException ex)
                     {
-                        lastException = ex;
+                        this._myStatusError = true;
+                        this.StatusLabel.Text = $"Err:{ex.Message}(GetListStatus)";
                     }
                 }
 
-                this._statuses.DistributePosts();
-
-                if (lastException != null)
-                    throw new WebApiException(lastException.Message, lastException);
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report("List refreshed");
-
-            this.RefreshTimeline();
+                this.RefreshTimeline();
+            }
+            finally
+            {
+                this.workerSemaphore.Release();
+            }
         }
 
-        private async Task GetRelatedTweetsAsync(TabClass tab)
+        private async Task GetRelatedTweetsAsync(RelatedPostsTabModel tab)
         {
             await this.workerSemaphore.WaitAsync();
 
             try
             {
-                var progress = new Progress<string>(x => this.StatusLabel.Text = x);
+                await tab.RefreshAsync(this.tw, this._initial, this.workerProgress);
 
-                await this.GetRelatedTweetsAsyncInternal(progress, this.workerCts.Token, tab);
+                this.RefreshTimeline();
             }
             catch (WebApiException ex)
             {
@@ -2793,56 +2482,7 @@ namespace OpenTween
             }
         }
 
-        private async Task GetRelatedTweetsAsyncInternal(IProgress<string> p, CancellationToken ct, TabClass tab)
-        {
-            if (ct.IsCancellationRequested)
-                return;
-
-            if (!CheckAccountValid())
-                throw new WebApiException("Auth error. Check your account");
-
-            bool read;
-            if (!this._cfgCommon.UnreadManage)
-                read = true;
-            else
-                read = this._initial && this._cfgCommon.Read;
-
-            p.Report("Related refreshing...");
-
-            await Task.Run(async () =>
-            {
-                await this.tw.GetRelatedResult(read, tab)
-                    .ConfigureAwait(false);
-
-                this._statuses.DistributePosts();
-            });
-
-            if (ct.IsCancellationRequested)
-                return;
-
-            p.Report("Related refreshed");
-
-            this.RefreshTimeline();
-
-            var tabPage = this.ListTab.TabPages.Cast<TabPage>()
-                .FirstOrDefault(x => x.Text == tab.TabName);
-
-            if (tabPage != null)
-            {
-                // TODO: 非同期更新中にタブが閉じられている場合を厳密に考慮したい
-
-                var listView = (DetailsListView)tabPage.Tag;
-                var index = tab.IndexOf(tab.RelationTargetPost.RetweetedId ?? tab.RelationTargetPost.StatusId);
-
-                if (index != -1 && index < listView.Items.Count)
-                {
-                    listView.SelectedIndices.Add(index);
-                    listView.Items[index].Focused = true;
-                }
-            }
-        }
-
-        private async Task FavAddAsync(long statusId, TabClass tab)
+        private async Task FavAddAsync(long statusId, TabModel tab)
         {
             await this.workerSemaphore.WaitAsync();
 
@@ -2863,7 +2503,7 @@ namespace OpenTween
             }
         }
 
-        private async Task FavAddAsyncInternal(IProgress<string> p, CancellationToken ct, long statusId, TabClass tab)
+        private async Task FavAddAsyncInternal(IProgress<string> p, CancellationToken ct, long statusId, TabModel tab)
         {
             if (ct.IsCancellationRequested)
                 return;
@@ -2906,7 +2546,7 @@ namespace OpenTween
                         postTl.IsFav = true;
 
                         var favTab = this._statuses.GetTabByType(MyCommon.TabUsageType.Favorites);
-                        favTab.AddPostQueue(statusId, postTl.IsRead);
+                        favTab.AddPostQueue(postTl);
                     }
 
                     // 検索,リスト,UserTimeline,Relatedの各タブに反映
@@ -2954,7 +2594,7 @@ namespace OpenTween
             }
         }
 
-        private async Task FavRemoveAsync(IReadOnlyList<long> statusIds, TabClass tab)
+        private async Task FavRemoveAsync(IReadOnlyList<long> statusIds, TabModel tab)
         {
             await this.workerSemaphore.WaitAsync();
 
@@ -2975,7 +2615,7 @@ namespace OpenTween
             }
         }
 
-        private async Task FavRemoveAsyncInternal(IProgress<string> p, CancellationToken ct, IReadOnlyList<long> statusIds, TabClass tab)
+        private async Task FavRemoveAsyncInternal(IProgress<string> p, CancellationToken ct, IReadOnlyList<long> statusIds, TabModel tab)
         {
             if (ct.IsCancellationRequested)
                 return;
@@ -3033,7 +2673,12 @@ namespace OpenTween
             if (ct.IsCancellationRequested)
                 return;
 
-            this.RemovePostFromFavTab(successIds.ToArray());
+            var favTab = this._statuses.GetTabByType(MyCommon.TabUsageType.Favorites);
+            foreach (var statusId in successIds)
+            {
+                // ツイートが削除された訳ではないので IsDeleted はセットしない
+                favTab.EnqueueRemovePost(statusId, setIsDeleted: false);
+            }
 
             this.RefreshTimeline();
 
@@ -3123,6 +2768,13 @@ namespace OpenTween
                 p.Report(errMsg);
                 this._myStatusError = true;
             }
+            catch (UnauthorizedAccessException ex)
+            {
+                // アップロード対象のファイルが開けなかった場合など
+                errMsg = $"Err:{ex.Message}(PostMessage)";
+                p.Report(errMsg);
+                this._myStatusError = true;
+            }
             finally
             {
                 // 使い終わった MediaItem は破棄する
@@ -3142,13 +2794,10 @@ namespace OpenTween
                 !errMsg.StartsWith("OK:", StringComparison.Ordinal) &&
                 !errMsg.StartsWith("Warn:", StringComparison.Ordinal))
             {
+                var message = string.Format(Properties.Resources.StatusUpdateFailed, errMsg, status.status);
+
                 var ret = MessageBox.Show(
-                    string.Format(
-                        "{0}   --->   [ " + errMsg + " ]" + Environment.NewLine +
-                        "\"" + status.status + "\"" + Environment.NewLine +
-                        "{1}",
-                        Properties.Resources.StatusUpdateFailed1,
-                        Properties.Resources.StatusUpdateFailed2),
+                    message,
                     "Failed to update status",
                     MessageBoxButtons.RetryCancel,
                     MessageBoxIcon.Question);
@@ -3203,6 +2852,9 @@ namespace OpenTween
                 var progress = new Progress<string>(x => this.StatusLabel.Text = x);
 
                 await this.RetweetAsyncInternal(progress, this.workerCts.Token, statusIds);
+
+                if (this._cfgCommon.PostAndGet && !this.tw.UserStreamActive)
+                    await this.GetHomeTimelineAsync();
             }
             catch (WebApiException ex)
             {
@@ -3231,11 +2883,10 @@ namespace OpenTween
 
             p.Report("Posting...");
 
-            var retweetTasks = from statusId in statusIds
-                               select this.tw.PostRetweet(statusId, read);
-
-            await Task.WhenAll(retweetTasks)
-                .ConfigureAwait(false);
+            foreach (var statusId in statusIds)
+            {
+                await this.tw.PostRetweet(statusId, read).ConfigureAwait(false);
+            }
 
             if (ct.IsCancellationRequested)
                 return;
@@ -3250,9 +2901,6 @@ namespace OpenTween
                 if (this._postTimestamps[i] < oneHour)
                     this._postTimestamps.RemoveAt(i);
             }
-
-            if (this._cfgCommon.PostAndGet && !this.tw.UserStreamActive)
-                await this.GetHomeTimelineAsync();
         }
 
         private async Task RefreshFollowerIdsAsync()
@@ -3366,68 +3014,6 @@ namespace OpenTween
             this.StatusLabel.Text = Properties.Resources.UpdateMuteUserIds_Finish;
         }
 
-        private void RemovePostFromFavTab(Int64[] ids)
-        {
-            var favTab = this._statuses.GetTabByType(MyCommon.TabUsageType.Favorites);
-            string favTabName = favTab.TabName;
-            int fidx = 0;
-            if (_curTab.Text.Equals(favTabName))
-            {
-                fidx = _curList.FocusedItem?.Index ?? _curList.TopItem?.Index ?? 0;
-            }
-
-            foreach (long i in ids)
-            {
-                try
-                {
-                    _statuses.RemoveFavPost(i);
-                }
-                catch (Exception)
-                {
-                    continue;
-                }
-            }
-            if (_curTab != null && _curTab.Text.Equals(favTabName))
-            {
-                this.PurgeListViewItemCache();
-                _curPost = null;
-                //_curItemIndex = -1;
-            }
-            foreach (TabPage tp in ListTab.TabPages)
-            {
-                if (tp.Text == favTabName)
-                {
-                    ((DetailsListView)tp.Tag).VirtualListSize = favTab.AllCount;
-                    break;
-                }
-            }
-            if (_curTab.Text.Equals(favTabName))
-            {
-                do
-                {
-                    _curList.SelectedIndices.Clear();
-                }
-                while (_curList.SelectedIndices.Count > 0);
-
-                if (favTab.AllCount > 0)
-                {
-                    if (favTab.AllCount - 1 > fidx && fidx > -1)
-                    {
-                        _curList.SelectedIndices.Add(fidx);
-                    }
-                    else
-                    {
-                        _curList.SelectedIndices.Add(favTab.AllCount - 1);
-                    }
-                    if (_curList.SelectedIndices.Count > 0)
-                    {
-                        _curList.EnsureVisible(_curList.SelectedIndices[0]);
-                        _curList.FocusedItem = _curList.Items[_curList.SelectedIndices[0]];
-                    }
-                }
-            }
-        }
-
         private void NotifyIcon1_MouseClick(object sender, MouseEventArgs e)
         {
             if (e.Button == MouseButtons.Left)
@@ -3497,7 +3083,7 @@ namespace OpenTween
 
         private async Task FavoriteChange(bool FavAdd, bool multiFavoriteChangeDialogEnable = true)
         {
-            TabClass tab;
+            TabModel tab;
             if (!this._statuses.Tabs.TryGetValue(this._curTab.Text, out tab))
                 return;
 
@@ -3645,8 +3231,7 @@ namespace OpenTween
         {
             // 表示上の列の位置から ColumnHeader を求める
             var col = this._curList.Columns.Cast<ColumnHeader>()
-                .Where(x => x.DisplayIndex == columnIndex)
-                .FirstOrDefault();
+                .FirstOrDefault(x => x.DisplayIndex == columnIndex);
 
             if (col == null)
                 return;
@@ -3782,32 +3367,21 @@ namespace OpenTween
                 FavorareMenuItem.Enabled = true;
                 ShowRelatedStatusesMenuItem.Enabled = true;  //PublicSearchの時問題出るかも
 
-                if (_curPost.IsMe)
+                if (!_curPost.CanRetweetBy(this.twitterApi.CurrentUserId))
                 {
-                    ReTweetStripMenuItem.Enabled = false;  //公式RTは無効に
-                    ReTweetUnofficialStripMenuItem.Enabled = true;
-                    QuoteStripMenuItem.Enabled = true;
-                    FavoriteRetweetContextMenu.Enabled = false;  //公式RTは無効に
-                    FavoriteRetweetUnofficialContextMenu.Enabled = true;
+                    ReTweetStripMenuItem.Enabled = false;
+                    ReTweetUnofficialStripMenuItem.Enabled = false;
+                    QuoteStripMenuItem.Enabled = false;
+                    FavoriteRetweetContextMenu.Enabled = false;
+                    FavoriteRetweetUnofficialContextMenu.Enabled = false;
                 }
                 else
                 {
-                    if (_curPost.IsProtect)
-                    {
-                        ReTweetStripMenuItem.Enabled = false;
-                        ReTweetUnofficialStripMenuItem.Enabled = false;
-                        QuoteStripMenuItem.Enabled = false;
-                        FavoriteRetweetContextMenu.Enabled = false;
-                        FavoriteRetweetUnofficialContextMenu.Enabled = false;
-                    }
-                    else
-                    {
-                        ReTweetStripMenuItem.Enabled = true;
-                        ReTweetUnofficialStripMenuItem.Enabled = true;
-                        QuoteStripMenuItem.Enabled = true;
-                        FavoriteRetweetContextMenu.Enabled = true;
-                        FavoriteRetweetUnofficialContextMenu.Enabled = true;
-                    }
+                    ReTweetStripMenuItem.Enabled = true;
+                    ReTweetUnofficialStripMenuItem.Enabled = true;
+                    QuoteStripMenuItem.Enabled = true;
+                    FavoriteRetweetContextMenu.Enabled = true;
+                    FavoriteRetweetUnofficialContextMenu.Enabled = true;
                 }
             }
             //if (_statuses.Tabs[ListTab.SelectedTab.Text].TabType != MyCommon.TabUsageType.Favorites)
@@ -3899,14 +3473,29 @@ namespace OpenTween
                         }
                         else
                         {
-                            if (post.RetweetedId != null && post.UserId == this.tw.UserId)
-                                // 他人に RT された自分のツイート
-                                await this.twitterApi.StatusesDestroy(post.RetweetedId.Value)
-                                    .IgnoreResponse();
-                            else
-                                // 自分のツイート or 自分が RT したツイート
+                            if (post.RetweetedByUserId == this.tw.UserId)
+                            {
+                                // 自分が RT したツイート (自分が RT した自分のツイートも含む)
+                                //   => RT を取り消し
                                 await this.twitterApi.StatusesDestroy(post.StatusId)
                                     .IgnoreResponse();
+                            }
+                            else
+                            {
+                                if (post.UserId == this.tw.UserId)
+                                {
+                                    if (post.RetweetedId != null)
+                                        // 他人に RT された自分のツイート
+                                        //   => RT 元の自分のツイートを削除
+                                        await this.twitterApi.StatusesDestroy(post.RetweetedId.Value)
+                                            .IgnoreResponse();
+                                    else
+                                        // 自分のツイート
+                                        //   => ツイートを削除
+                                        await this.twitterApi.StatusesDestroy(post.StatusId)
+                                            .IgnoreResponse();
+                                }
+                            }
                         }
                     }
                     catch (WebApiException ex)
@@ -3915,7 +3504,7 @@ namespace OpenTween
                         continue;
                     }
 
-                    this._statuses.RemovePost(post.StatusId);
+                    this._statuses.RemovePostFromAllTabs(post.StatusId, setIsDeleted: true);
                 }
 
                 if (lastException == null)
@@ -4031,7 +3620,7 @@ namespace OpenTween
         {
             if (_curTab != null)
             {
-                TabClass tab;
+                TabModel tab;
                 if (!this._statuses.Tabs.TryGetValue(this._curTab.Text, out tab))
                     return;
 
@@ -4049,17 +3638,17 @@ namespace OpenTween
                     //case MyCommon.TabUsageType.Profile:
                         //// TODO
                     case MyCommon.TabUsageType.PublicSearch:
-                        //// TODO
-                        if (string.IsNullOrEmpty(tab.SearchWords)) return;
-                        await this.GetPublicSearchAsync(tab);
+                        var searchTab = (PublicSearchTabModel)tab;
+                        if (string.IsNullOrEmpty(searchTab.SearchWords)) return;
+                        await this.GetPublicSearchAsync(searchTab);
                         break;
                     case MyCommon.TabUsageType.UserTimeline:
-                        await this.GetUserTimelineAsync(tab);
+                        await this.GetUserTimelineAsync((UserTimelineTabModel)tab);
                         break;
                     case MyCommon.TabUsageType.Lists:
-                        //// TODO
-                        if (tab.ListInfo == null || tab.ListInfo.Id == 0) return;
-                        await this.GetListTimelineAsync(tab);
+                        var listTab = (ListTimelineTabModel)tab;
+                        if (listTab.ListInfo == null || listTab.ListInfo.Id == 0) return;
+                        await this.GetListTimelineAsync(listTab);
                         break;
                     default:
                         await this.GetHomeTimelineAsync();
@@ -4077,7 +3666,7 @@ namespace OpenTween
             //ページ指定をマイナス1に
             if (_curTab != null)
             {
-                TabClass tab;
+                TabModel tab;
                 if (!this._statuses.Tabs.TryGetValue(this._curTab.Text, out tab))
                     return;
 
@@ -4096,17 +3685,17 @@ namespace OpenTween
                         //// TODO
                         break;
                     case MyCommon.TabUsageType.PublicSearch:
-                        // TODO
-                        if (string.IsNullOrEmpty(tab.SearchWords)) return;
-                        await this.GetPublicSearchAsync(tab, loadMore: true);
+                        var searchTab = (PublicSearchTabModel)tab;
+                        if (string.IsNullOrEmpty(searchTab.SearchWords)) return;
+                        await this.GetPublicSearchAsync(searchTab, loadMore: true);
                         break;
                     case MyCommon.TabUsageType.UserTimeline:
-                        await this.GetUserTimelineAsync(tab, loadMore: true);
+                        await this.GetUserTimelineAsync((UserTimelineTabModel)tab, loadMore: true);
                         break;
                     case MyCommon.TabUsageType.Lists:
-                        //// TODO
-                        if (tab.ListInfo == null || tab.ListInfo.Id == 0) return;
-                        await this.GetListTimelineAsync(tab, loadMore: true);
+                        var listTab = (ListTimelineTabModel)tab;
+                        if (listTab.ListInfo == null || listTab.ListInfo.Id == 0) return;
+                        await this.GetListTimelineAsync(listTab, loadMore: true);
                         break;
                     default:
                         await this.GetHomeTimelineAsync(loadMore: true);
@@ -4172,9 +3761,10 @@ namespace OpenTween
                     ShortUrl.Instance.DisableExpanding = !this._cfgCommon.TinyUrlResolve;
                     ShortUrl.Instance.BitlyId = this._cfgCommon.BilyUser;
                     ShortUrl.Instance.BitlyKey = this._cfgCommon.BitlyPwd;
-                    HttpTwitter.TwitterUrl = _cfgCommon.TwitterUrl;
+                    TwitterApiConnection.RestApiHost = this._cfgCommon.TwitterApiHost;
 
                     Networking.DefaultTimeout = TimeSpan.FromSeconds(this._cfgCommon.DefaultTimeOut);
+                    Networking.UploadImageTimeout = TimeSpan.FromSeconds(this._cfgCommon.UploadImageTimeout);
                     Networking.SetWebProxy(this._cfgLocal.ProxyType,
                         this._cfgLocal.ProxyAddress, this._cfgLocal.ProxyPort,
                         this._cfgLocal.ProxyUser, this._cfgLocal.ProxyPassword);
@@ -4388,7 +3978,6 @@ namespace OpenTween
             {
                 // キャンセル時は Twitter クラスの認証情報を画面表示前の状態に戻す
                 this.tw.Initialize(oldUser.AccessToken, oldUser.AccessTokenSecret, oldUser.Username, oldUser.UserId);
-                this.twitterApi.Initialize(oldUser.AccessToken, oldUser.AccessTokenSecret, oldUser.UserId, oldUser.Username);
             }
 
             Twitter.AccountState = MyCommon.ACCOUNT_STATE.Valid;
@@ -4416,7 +4005,7 @@ namespace OpenTween
             foreach (TabPage tab in ListTab.TabPages)
             {
                 DetailsListView lst = (DetailsListView)tab.Tag;
-                TabClass tabInfo = _statuses.Tabs[tab.Text];
+                TabModel tabInfo = _statuses.Tabs[tab.Text];
                 using (ControlTransaction.Update(lst))
                 {
                     // 選択位置などを復元
@@ -4487,33 +4076,10 @@ namespace OpenTween
             }
         }
 
-        private async void PostBrowser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
-        {
-            if (e.Url.AbsoluteUri != "about:blank")
-            {
-                await this.DispSelectedPost();
-                await this.OpenUriInBrowserAsync(e.Url.OriginalString);
-            }
-        }
-
-        private async void PostBrowser_Navigating(object sender, WebBrowserNavigatingEventArgs e)
-        {
-            if (e.Url.Scheme == "data")
-            {
-                StatusLabelUrl.Text = PostBrowser.StatusText.Replace("&", "&&");
-            }
-            else if (e.Url.AbsoluteUri != "about:blank")
-            {
-                e.Cancel = true;
-                // Ctrlを押しながらリンクを開いた場合は、設定と逆の動作をするフラグを true としておく
-                await this.OpenUriAsync( e.Url, MyCommon.IsKeyDown( Keys.Control ) );
-            }
-        }
-
         public void AddNewTabForSearch(string searchWord)
         {
             //同一検索条件のタブが既に存在すれば、そのタブアクティブにして終了
-            foreach (TabClass tb in _statuses.GetTabsByType(MyCommon.TabUsageType.PublicSearch))
+            foreach (var tb in _statuses.GetTabsByType<PublicSearchTabModel>())
             {
                 if (tb.SearchWords == searchWord && string.IsNullOrEmpty(tb.SearchLang))
                 {
@@ -4537,8 +4103,9 @@ namespace OpenTween
                     break;
             }
             //タブ追加
-            _statuses.AddTab(tabName, MyCommon.TabUsageType.PublicSearch, null);
-            AddNewTab(tabName, false, MyCommon.TabUsageType.PublicSearch);
+            var tab = new PublicSearchTabModel(tabName);
+            _statuses.AddTab(tab);
+            AddNewTab(tab, startup: false);
             //追加したタブをアクティブに
             ListTab.SelectedIndex = ListTab.TabPages.Count - 1;
             //検索条件の設定
@@ -4570,9 +4137,9 @@ namespace OpenTween
         public void AddNewTabForUserTimeline(string user)
         {
             //同一検索条件のタブが既に存在すれば、そのタブアクティブにして終了
-            foreach (TabClass tb in _statuses.GetTabsByType(MyCommon.TabUsageType.UserTimeline))
+            foreach (var tb in _statuses.GetTabsByType<UserTimelineTabModel>())
             {
-                if (tb.User == user)
+                if (tb.ScreenName == user)
                 {
                     foreach (TabPage tp in ListTab.TabPages)
                     {
@@ -4591,10 +4158,9 @@ namespace OpenTween
                 tabName += "_";
             }
             //タブ追加
-            _statuses.AddTab(tabName, MyCommon.TabUsageType.UserTimeline, null);
-            var tab = this._statuses.Tabs[tabName];
-            tab.User = user;
-            AddNewTab(tabName, false, MyCommon.TabUsageType.UserTimeline);
+            var tab = new UserTimelineTabModel(tabName, user);
+            this._statuses.AddTab(tab);
+            this.AddNewTab(tab, startup: false);
             //追加したタブをアクティブに
             ListTab.SelectedIndex = ListTab.TabPages.Count - 1;
             SaveConfigsTabs();
@@ -4602,29 +4168,16 @@ namespace OpenTween
             this.GetUserTimelineAsync(tab);
         }
 
-        public bool AddNewTab(string tabName, bool startup, MyCommon.TabUsageType tabType, ListElement listInfo = null)
+        public bool AddNewTab(TabModel tab, bool startup)
         {
             //重複チェック
             foreach (TabPage tb in ListTab.TabPages)
             {
-                if (tb.Text == tabName) return false;
+                if (tb.Text == tab.TabName) return false;
             }
 
             //新規タブ名チェック
-            if (tabName == Properties.Resources.AddNewTabText1) return false;
-
-            //タブタイプ重複チェック
-            if (!startup)
-            {
-                if (tabType == MyCommon.TabUsageType.DirectMessage ||
-                   tabType == MyCommon.TabUsageType.Favorites ||
-                   tabType == MyCommon.TabUsageType.Home ||
-                   tabType == MyCommon.TabUsageType.Mentions ||
-                   tabType == MyCommon.TabUsageType.Related)
-                {
-                    if (_statuses.GetTabByType(tabType) != null) return false;
-                }
-            }
+            if (tab.TabName == Properties.Resources.AddNewTabText1) return false;
 
             var _tabPage = new TabPage();
             var _listCustom = new DetailsListView();
@@ -4644,19 +4197,24 @@ namespace OpenTween
                 _tabPage.Controls.Add(_listCustom);
 
                 /// UserTimeline関連
-                if (tabType == MyCommon.TabUsageType.UserTimeline || tabType == MyCommon.TabUsageType.Lists)
+                var userTab = tab as UserTimelineTabModel;
+                var listTab = tab as ListTimelineTabModel;
+                var searchTab = tab as PublicSearchTabModel;
+
+                if (userTab != null || listTab != null)
                 {
                     var label = new Label();
                     label.Dock = DockStyle.Top;
                     label.Name = "labelUser";
                     label.TabIndex = 0;
-                    if (tabType == MyCommon.TabUsageType.Lists)
+
+                    if (listTab != null)
                     {
-                        label.Text = listInfo.ToString();
+                        label.Text = listTab.ListInfo.ToString();
                     }
-                    else
+                    else if (userTab != null)
                     {
-                        label.Text = _statuses.Tabs[tabName].User + "'s Timeline";
+                        label.Text = userTab.ScreenName + "'s Timeline";
                     }
                     label.TextAlign = ContentAlignment.MiddleLeft;
                     using (ComboBox tmpComboBox = new ComboBox())
@@ -4666,7 +4224,7 @@ namespace OpenTween
                     _tabPage.Controls.Add(label);
                 }
                 /// 検索関連の準備
-                else if (tabType == MyCommon.TabUsageType.PublicSearch)
+                else if (searchTab != null)
                 {
                     var pnl = new Panel();
 
@@ -4744,18 +4302,14 @@ namespace OpenTween
                         btn.TabIndex = 3;
                         btn.Click += SearchButton_Click;
 
-                        TabClass tab;
-                        if (_statuses.Tabs.TryGetValue(tabName, out tab))
+                        if (!string.IsNullOrEmpty(searchTab.SearchWords))
                         {
-                            if (!string.IsNullOrEmpty(tab.SearchWords))
-                            {
-                                cmb.Items.Add(tab.SearchWords);
-                                cmb.Text = tab.SearchWords;
-                            }
-
-                            cmbLang.Text = tab.SearchLang;
+                            cmb.Items.Add(searchTab.SearchWords);
+                            cmb.Text = searchTab.SearchWords;
                         }
 
+                        cmbLang.Text = searchTab.SearchLang;
+
                         _tabPage.Controls.Add(pnl);
                     }
                 }
@@ -4764,10 +4318,10 @@ namespace OpenTween
                 this.ListTab.Controls.Add(_tabPage);
 
                 _tabPage.Location = new Point(4, 4);
-                _tabPage.Name = "CTab" + cnt.ToString();
+                _tabPage.Name = "CTab" + cnt;
                 _tabPage.Size = new Size(380, 260);
                 _tabPage.TabIndex = 2 + cnt;
-                _tabPage.Text = tabName;
+                _tabPage.Text = tab.TabName;
                 _tabPage.UseVisualStyleBackColor = true;
                 _tabPage.AccessibleRole = AccessibleRole.PageTab;
 
@@ -4781,7 +4335,7 @@ namespace OpenTween
                 _listCustom.HideSelection = false;
                 _listCustom.Location = new Point(0, 0);
                 _listCustom.Margin = new Padding(0);
-                _listCustom.Name = "CList" + Environment.TickCount.ToString();
+                _listCustom.Name = "CList" + Environment.TickCount;
                 _listCustom.ShowItemToolTips = true;
                 _listCustom.Size = new Size(380, 260);
                 _listCustom.UseCompatibleStateImageBehavior = false;
@@ -4937,10 +4491,7 @@ namespace OpenTween
             {
                 DetailsListView lst = (DetailsListView)tp.Tag;
                 var count = _statuses.Tabs[tp.Text].AllCount;
-                if (lst.VirtualListSize != count)
-                {
-                    lst.VirtualListSize = count;
-                }
+                lst.VirtualListSize = count;
             }
 
             return true;
@@ -4959,7 +4510,7 @@ namespace OpenTween
             if (!this._cfgCommon.TabMouseLock && e.Button == MouseButtons.Left && _tabDrag)
             {
                 string tn = "";
-                Rectangle dragEnableRectangle = new Rectangle((int)(_tabMouseDownPoint.X - (SystemInformation.DragSize.Width / 2)), (int)(_tabMouseDownPoint.Y - (SystemInformation.DragSize.Height / 2)), SystemInformation.DragSize.Width, SystemInformation.DragSize.Height);
+                Rectangle dragEnableRectangle = new Rectangle(_tabMouseDownPoint.X - (SystemInformation.DragSize.Width / 2), _tabMouseDownPoint.Y - (SystemInformation.DragSize.Height / 2), SystemInformation.DragSize.Width, SystemInformation.DragSize.Height);
                 if (!dragEnableRectangle.Contains(e.Location))
                 {
                     //タブが多段の場合にはMouseDownの前の段階で選択されたタブの段が変わっているので、このタイミングでカーソルの位置からタブを判定出来ない。
@@ -5046,26 +4597,6 @@ namespace OpenTween
             _isColumnChanged = false;
         }
 
-        private void PostBrowser_StatusTextChanged(object sender, EventArgs e)
-        {
-            try
-            {
-                if (PostBrowser.StatusText.StartsWith("http", StringComparison.Ordinal)
-                    || PostBrowser.StatusText.StartsWith("ftp", StringComparison.Ordinal)
-                    || PostBrowser.StatusText.StartsWith("data", StringComparison.Ordinal))
-                {
-                    StatusLabelUrl.Text = PostBrowser.StatusText.Replace("&", "&&");
-                }
-                if (string.IsNullOrEmpty(PostBrowser.StatusText))
-                {
-                    SetStatusLabelUrl();
-                }
-            }
-            catch (Exception)
-            {
-            }
-        }
-
         private void StatusText_KeyPress(object sender, KeyPressEventArgs e)
         {
             if (e.KeyChar == '@')
@@ -5153,7 +4684,7 @@ namespace OpenTween
                 if (e.KeyCode == Keys.Space || e.KeyCode == Keys.ProcessKey)
                 {
                     bool isSpace = false;
-                    foreach (char c in StatusText.Text.ToCharArray())
+                    foreach (char c in StatusText.Text)
                     {
                         if (c == ' ' || c == ' ')
                         {
@@ -5189,6 +4720,9 @@ namespace OpenTween
             {
                 StatusText.ForeColor = _clInputFont;
             }
+
+            this.StatusText.AccessibleDescription = string.Format(Properties.Resources.StatusText_AccessibleDescription, pLen);
+
             if (string.IsNullOrEmpty(StatusText.Text))
             {
                 this.inReplyTo = null;
@@ -5286,9 +4820,11 @@ namespace OpenTween
             //文字数カウント
             var remainCount = this.tw.GetTextLengthRemain(statusText);
 
-            if (this.ImageSelector.Visible && !string.IsNullOrEmpty(this.ImageSelector.ServiceName))
+            var uploadService = this.ImageSelector.SelectedService;
+            if (this.ImageSelector.Visible && uploadService != null)
             {
-                remainCount -= this.tw.Configuration.CharactersReservedPerMedia;
+                // TODO: ImageSelector で選択中の画像の枚数が mediaCount 引数に渡るようにする
+                remainCount -= uploadService.GetReservedTextLength(1);
             }
 
             return remainCount;
@@ -5300,7 +4836,7 @@ namespace OpenTween
                 return;
 
             var listCache = this._listItemCache;
-            if (listCache != null && listCache.IsSupersetOf(e.StartIndex, e.EndIndex))
+            if (listCache?.TargetList == sender && listCache.IsSupersetOf(e.StartIndex, e.EndIndex))
             {
                 // If the newly requested cache is a subset of the old cache,
                 // no need to rebuild everything, so do nothing.
@@ -5314,7 +4850,7 @@ namespace OpenTween
         private void MyList_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
         {
             var listCache = this._listItemCache;
-            if (listCache != null && listCache.TargetList == sender)
+            if (listCache?.TargetList == sender)
             {
                 ListViewItem item;
                 PostClass cacheItemPost;
@@ -5384,13 +4920,13 @@ namespace OpenTween
             //if (Post.IsMark) mk.Append("♪");
             //if (Post.IsProtect) mk.Append("Ю");
             //if (Post.InReplyToStatusId != null) mk.Append("⇒");
-            if (Post.FavoritedCount > 0) mk.Append("+" + Post.FavoritedCount.ToString());
+            if (Post.FavoritedCount > 0) mk.Append("+" + Post.FavoritedCount);
             ImageListViewItem itm;
             if (Post.RetweetedId == null)
             {
                 string[] sitem= {"",
                                  Post.Nickname,
-                                 Post.IsDeleted ? "(DELETED)" : Post.TextSingleLine,
+                                 Post.IsDeleted ? "(DELETED)" : Post.AccessibleText,
                                  Post.CreatedAt.ToString(this._cfgCommon.DateTimeFormat),
                                  Post.ScreenName,
                                  "",
@@ -5402,7 +4938,7 @@ namespace OpenTween
             {
                 string[] sitem = {"",
                                   Post.Nickname,
-                                  Post.IsDeleted ? "(DELETED)" : Post.TextSingleLine,
+                                  Post.IsDeleted ? "(DELETED)" : Post.AccessibleText,
                                   Post.CreatedAt.ToString(this._cfgCommon.DateTimeFormat),
                                   Post.ScreenName + Environment.NewLine + "(RT:" + Post.RetweetedBy + ")",
                                   "",
@@ -5411,6 +4947,7 @@ namespace OpenTween
                 itm = new ImageListViewItem(sitem, this.IconCache, Post.ImageUrl);
             }
             itm.StateIndex = Post.StateIndex;
+            itm.Tag = Post;
 
             bool read = Post.IsRead;
             //未読管理していなかったら既読として扱う
@@ -5513,6 +5050,8 @@ namespace OpenTween
             if (e.ColumnIndex > 0)
             {
                 //アイコン以外の列
+                var post = (PostClass)e.Item.Tag;
+
                 RectangleF rct = e.Bounds;
                 rct.Width = e.Header.Width;
                 int fontHeight = e.Item.Font.Height;
@@ -5569,7 +5108,7 @@ namespace OpenTween
                         using (Font fnt = new Font(e.Item.Font, FontStyle.Bold))
                         {
                             TextRenderer.DrawText(e.Graphics,
-                                                    e.Item.SubItems[2].Text,
+                                                    post.IsDeleted ? "(DELETED)" : post.TextSingleLine,
                                                     e.Item.Font,
                                                     Rectangle.Round(rct),
                                                     color,
@@ -5588,30 +5127,39 @@ namespace OpenTween
                                                     TextFormatFlags.NoPrefix);
                         }
                     }
-                    else if (drawLineCount == 1)
-                    {
-                        TextRenderer.DrawText(e.Graphics,
-                                                e.SubItem.Text,
-                                                e.Item.Font,
-                                                Rectangle.Round(rct),
-                                                color,
-                                                TextFormatFlags.SingleLine |
-                                                TextFormatFlags.EndEllipsis |
-                                                TextFormatFlags.GlyphOverhangPadding |
-                                                TextFormatFlags.NoPrefix |
-                                                TextFormatFlags.VerticalCenter);
-                    }
                     else
                     {
-                        TextRenderer.DrawText(e.Graphics,
-                                                e.SubItem.Text,
-                                                e.Item.Font,
-                                                Rectangle.Round(rct),
-                                                color,
-                                                TextFormatFlags.WordBreak |
-                                                TextFormatFlags.EndEllipsis |
-                                                TextFormatFlags.GlyphOverhangPadding |
-                                                TextFormatFlags.NoPrefix);
+                        string text;
+                        if (e.ColumnIndex != 2)
+                            text = e.SubItem.Text;
+                        else
+                            text = post.IsDeleted ? "(DELETED)" : post.TextSingleLine;
+
+                        if (drawLineCount == 1)
+                        {
+                            TextRenderer.DrawText(e.Graphics,
+                                                    text,
+                                                    e.Item.Font,
+                                                    Rectangle.Round(rct),
+                                                    color,
+                                                    TextFormatFlags.SingleLine |
+                                                    TextFormatFlags.EndEllipsis |
+                                                    TextFormatFlags.GlyphOverhangPadding |
+                                                    TextFormatFlags.NoPrefix |
+                                                    TextFormatFlags.VerticalCenter);
+                        }
+                        else
+                        {
+                            TextRenderer.DrawText(e.Graphics,
+                                                    text,
+                                                    e.Item.Font,
+                                                    Rectangle.Round(rct),
+                                                    color,
+                                                    TextFormatFlags.WordBreak |
+                                                    TextFormatFlags.EndEllipsis |
+                                                    TextFormatFlags.GlyphOverhangPadding |
+                                                    TextFormatFlags.NoPrefix);
+                        }
                     }
                     //if (e.ColumnIndex == 6) this.DrawListViewItemStateIcon(e, rct);
                 }
@@ -5728,7 +5276,7 @@ namespace OpenTween
         //    }
         //}
 
-        private void DoTabSearch(string searchWord, bool caseSensitive, bool useRegex, SEARCHTYPE searchType)
+        internal void DoTabSearch(string searchWord, bool caseSensitive, bool useRegex, SEARCHTYPE searchType)
         {
             var tab = this._statuses.Tabs[this._curTab.Text];
 
@@ -5859,8 +5407,9 @@ namespace OpenTween
                         MessageBox.Show(this, ex.Message, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
                     }
 
-                    this.AddNewTab(tabName, false, MyCommon.TabUsageType.SearchResults);
-                    this._statuses.AddTab(tabName, MyCommon.TabUsageType.SearchResults, null);
+                    var resultTab = new LocalSearchTabModel(tabName);
+                    this.AddNewTab(resultTab, startup: false);
+                    this._statuses.AddTab(resultTab);
 
                     var targetTab = this._statuses.Tabs[this._curTab.Text];
 
@@ -5883,11 +5432,9 @@ namespace OpenTween
                     }
 
                     var foundPosts = foundIndices.Select(x => targetTab[x]);
-
-                    var resultTab = this._statuses.Tabs[tabName];
                     foreach (var post in foundPosts)
                     {
-                        resultTab.AddPostToInnerStorage(post);
+                        resultTab.AddPostQueue(post);
                     }
 
                     this._statuses.DistributePosts();
@@ -5915,7 +5462,7 @@ namespace OpenTween
 
         /// <summary>発言検索に使用するメソッドを生成します</summary>
         /// <exception cref="ArgumentException">
-        /// <paramref name="useRegex"/> が true かつ、<paramref name="query"> が不正な正規表現な場合
+        /// <paramref name="useRegex"/> が true かつ、<paramref name="query"/> が不正な正規表現な場合
         /// </exception>
         private Func<string, bool> CreateSearchComparer(string query, bool useRegex, bool caseSensitive)
         {
@@ -5946,74 +5493,89 @@ namespace OpenTween
         private void JumpUnreadMenuItem_Click(object sender, EventArgs e)
         {
             int bgnIdx = ListTab.TabPages.IndexOf(_curTab);
-            int idx = -1;
-            DetailsListView lst = null;
 
             if (ImageSelector.Enabled)
                 return;
 
+            TabModel foundTab = null;
+            int foundIndex = 0;
+
+            DetailsListView lst = null;
+
             //現在タブから最終タブまで探索
             for (int i = bgnIdx; i < ListTab.TabPages.Count; i++)
             {
-                //未読Index取得
-                idx = _statuses.Tabs[ListTab.TabPages[i].Text].NextUnreadIndex;
-                if (idx > -1)
+                var tabPage = this.ListTab.TabPages[i];
+                var tab = this._statuses.Tabs[tabPage.Text];
+                var unreadIndex = tab.NextUnreadIndex;
+
+                if (unreadIndex != -1)
                 {
                     ListTab.SelectedIndex = i;
-                    lst = (DetailsListView)ListTab.TabPages[i].Tag;
-                    //_curTab = ListTab.TabPages[i];
+                    foundTab = tab;
+                    foundIndex = unreadIndex;
+                    lst = (DetailsListView)tabPage.Tag;
                     break;
                 }
             }
 
             //未読みつからず&現在タブが先頭ではなかったら、先頭タブから現在タブの手前まで探索
-            if (idx == -1 && bgnIdx > 0)
+            if (foundTab == null && bgnIdx > 0)
             {
                 for (int i = 0; i < bgnIdx; i++)
                 {
-                    idx = _statuses.Tabs[ListTab.TabPages[i].Text].NextUnreadIndex;
-                    if (idx > -1)
+                    var tabPage = this.ListTab.TabPages[i];
+                    var tab = this._statuses.Tabs[tabPage.Text];
+                    var unreadIndex = tab.NextUnreadIndex;
+
+                    if (unreadIndex != -1)
                     {
                         ListTab.SelectedIndex = i;
-                        lst = (DetailsListView)ListTab.TabPages[i].Tag;
-                        //_curTab = ListTab.TabPages[i];
+                        foundTab = tab;
+                        foundIndex = unreadIndex;
+                        lst = (DetailsListView)tabPage.Tag;
                         break;
                     }
                 }
             }
 
-            //全部調べたが未読見つからず→先頭タブの最新発言へ
-            if (idx == -1)
+            if (foundTab == null)
             {
+                //全部調べたが未読見つからず→先頭タブの最新発言へ
                 ListTab.SelectedIndex = 0;
-                lst = (DetailsListView)ListTab.TabPages[0].Tag;
-                //_curTab = ListTab.TabPages[0];
+                var tabPage = this.ListTab.TabPages[0];
+                var tab = this._statuses.Tabs[tabPage.Text];
+
+                if (tab.AllCount == 0)
+                    return;
+
                 if (_statuses.SortOrder == SortOrder.Ascending)
-                    idx = lst.VirtualListSize - 1;
+                    foundIndex = tab.AllCount - 1;
                 else
-                    idx = 0;
+                    foundIndex = 0;
+
+                lst = (DetailsListView)tabPage.Tag;
             }
 
-            if (lst.VirtualListSize > 0 && idx > -1 && lst.VirtualListSize > idx)
+            SelectListItem(lst, foundIndex);
+
+            if (_statuses.SortMode == ComparerMode.Id)
             {
-                SelectListItem(lst, idx);
-                if (_statuses.SortMode == ComparerMode.Id)
+                if (_statuses.SortOrder == SortOrder.Ascending && lst.Items[foundIndex].Position.Y > lst.ClientSize.Height - _iconSz - 10 ||
+                    _statuses.SortOrder == SortOrder.Descending && lst.Items[foundIndex].Position.Y < _iconSz + 10)
                 {
-                    if (_statuses.SortOrder == SortOrder.Ascending && lst.Items[idx].Position.Y > lst.ClientSize.Height - _iconSz - 10 ||
-                       _statuses.SortOrder == SortOrder.Descending && lst.Items[idx].Position.Y < _iconSz + 10)
-                    {
-                        MoveTop();
-                    }
-                    else
-                    {
-                        lst.EnsureVisible(idx);
-                    }
+                    MoveTop();
                 }
                 else
                 {
-                    lst.EnsureVisible(idx);
+                    lst.EnsureVisible(foundIndex);
                 }
             }
+            else
+            {
+                lst.EnsureVisible(foundIndex);
+            }
+
             lst.Focus();
         }
 
@@ -6152,7 +5714,8 @@ namespace OpenTween
             {
                 SetMainWindowTitle();
             }
-            if (!StatusLabelUrl.Text.StartsWith("http")) SetStatusLabelUrl();
+            if (!StatusLabelUrl.Text.StartsWith("http", StringComparison.OrdinalIgnoreCase))
+                SetStatusLabelUrl();
             foreach (TabPage tb in ListTab.TabPages)
             {
                 if (_statuses.Tabs[tb.Text].UnreadCount == 0)
@@ -6174,27 +5737,6 @@ namespace OpenTween
             return detailHtmlFormatHeader + orgdata + detailHtmlFormatFooter;
         }
 
-        private async void DisplayItemImage_Downloaded(object sender, EventArgs e)
-        {
-            if (sender.Equals(displayItem))
-            {
-                this.ClearUserPicture();
-
-                var img = displayItem.Image;
-                try
-                {
-                    if (img != null)
-                        img = await img.CloneAsync();
-
-                    UserPicture.Image = img;
-                }
-                catch (Exception)
-                {
-                    UserPicture.ShowErrorImage();
-                }
-            }
-        }
-
         private Task DispSelectedPost()
         {
             return this.DispSelectedPost(false);
@@ -6218,145 +5760,20 @@ namespace OpenTween
             if (!forceupdate && this._curPost.Equals(oldDisplayPost))
                 return;
 
-            if (displayItem != null)
-            {
-                displayItem.ImageDownloaded -= this.DisplayItemImage_Downloaded;
-                displayItem = null;
-            }
-            displayItem = (ImageListViewItem)_curList.Items[_curList.SelectedIndices[0]];
-            displayItem.ImageDownloaded += this.DisplayItemImage_Downloaded;
-
-            using (ControlTransaction.Update(this.TableLayoutPanel1))
-            {
-                SourceLinkLabel.Text = this._curPost.Source;
-                SourceLinkLabel.Tag = this._curPost.SourceUri;
-                SourceLinkLabel.TabStop = false; // Text を更新すると勝手に true にされる
-
-                string nameText;
-                if (_curPost.IsDm)
-                {
-                    if (_curPost.IsOwl)
-                        nameText = "DM FROM <- ";
-                    else
-                        nameText = "DM TO -> ";
-                }
-                else
-                {
-                    nameText = "";
-                }
-                nameText += _curPost.ScreenName + "/" + _curPost.Nickname;
-                if (_curPost.RetweetedId != null)
-                    nameText += " (RT:" + _curPost.RetweetedBy + ")";
-
-                NameLabel.Text = nameText;
-                NameLabel.Tag = _curPost.ScreenName;
-
-                var nameForeColor = SystemColors.ControlText;
-                if (_curPost.IsOwl && (this._cfgCommon.OneWayLove || _curPost.IsDm))
-                    nameForeColor = this._clOWL;
-                if (_curPost.RetweetedId != null)
-                    nameForeColor = this._clRetweet;
-                if (_curPost.IsFav)
-                    nameForeColor = this._clFav;
-                NameLabel.ForeColor = nameForeColor;
-
-                this.ClearUserPicture();
-
-                if (!string.IsNullOrEmpty(_curPost.ImageUrl))
-                {
-                    var image = IconCache.TryGetFromCache(_curPost.ImageUrl);
-                    try
-                    {
-                        UserPicture.Image = image?.Clone();
-                    }
-                    catch (Exception)
-                    {
-                        UserPicture.ShowErrorImage();
-                    }
-                }
-
-                DateTimeLabel.Text = _curPost.CreatedAt.ToString();
-            }
-
-            if (DumpPostClassToolStripMenuItem.Checked)
+            var loadTasks = new List<Task>
             {
-                StringBuilder sb = new StringBuilder(512);
-
-                sb.Append("-----Start PostClass Dump<br>");
-                sb.AppendFormat("TextFromApi           : {0}<br>", _curPost.TextFromApi);
-                sb.AppendFormat("(PlainText)    : <xmp>{0}</xmp><br>", _curPost.TextFromApi);
-                sb.AppendFormat("StatusId             : {0}<br>", _curPost.StatusId.ToString());
-                //sb.AppendFormat("ImageIndex     : {0}<br>", _curPost.ImageIndex.ToString());
-                sb.AppendFormat("ImageUrl       : {0}<br>", _curPost.ImageUrl);
-                sb.AppendFormat("InReplyToStatusId    : {0}<br>", _curPost.InReplyToStatusId.ToString());
-                sb.AppendFormat("InReplyToUser  : {0}<br>", _curPost.InReplyToUser);
-                sb.AppendFormat("IsDM           : {0}<br>", _curPost.IsDm.ToString());
-                sb.AppendFormat("IsFav          : {0}<br>", _curPost.IsFav.ToString());
-                sb.AppendFormat("IsMark         : {0}<br>", _curPost.IsMark.ToString());
-                sb.AppendFormat("IsMe           : {0}<br>", _curPost.IsMe.ToString());
-                sb.AppendFormat("IsOwl          : {0}<br>", _curPost.IsOwl.ToString());
-                sb.AppendFormat("IsProtect      : {0}<br>", _curPost.IsProtect.ToString());
-                sb.AppendFormat("IsRead         : {0}<br>", _curPost.IsRead.ToString());
-                sb.AppendFormat("IsReply        : {0}<br>", _curPost.IsReply.ToString());
-
-                foreach (string nm in _curPost.ReplyToList)
-                {
-                    sb.AppendFormat("ReplyToList    : {0}<br>", nm);
-                }
-
-                sb.AppendFormat("ScreenName           : {0}<br>", _curPost.ScreenName);
-                sb.AppendFormat("NickName       : {0}<br>", _curPost.Nickname);
-                sb.AppendFormat("Text   : {0}<br>", _curPost.Text);
-                sb.AppendFormat("(PlainText)    : <xmp>{0}</xmp><br>", _curPost.Text);
-                sb.AppendFormat("CreatedAt          : {0}<br>", _curPost.CreatedAt.ToString());
-                sb.AppendFormat("Source         : {0}<br>", _curPost.Source);
-                sb.AppendFormat("UserId            : {0}<br>", _curPost.UserId);
-                sb.AppendFormat("FilterHit      : {0}<br>", _curPost.FilterHit);
-                sb.AppendFormat("RetweetedBy    : {0}<br>", _curPost.RetweetedBy);
-                sb.AppendFormat("RetweetedId    : {0}<br>", _curPost.RetweetedId);
-
-                sb.AppendFormat("Media.Count    : {0}<br>", _curPost.Media.Count);
-                if (_curPost.Media.Count > 0)
-                {
-                    for (int i = 0; i < _curPost.Media.Count; i++)
-                    {
-                        var info = _curPost.Media[i];
-                        sb.AppendFormat("Media[{0}].Url         : {1}<br>", i, info.Url);
-                        sb.AppendFormat("Media[{0}].VideoUrl    : {1}<br>", i, info.VideoUrl ?? "---");
-                    }
-                }
-                sb.Append("-----End PostClass Dump<br>");
-
-                PostBrowser.DocumentText = detailHtmlFormatHeader + sb.ToString() + detailHtmlFormatFooter;
-                return;
-            }
+                this.tweetDetailsView.ShowPostDetails(this._curPost),
+            };
 
-            var loadTasks = new List<Task>();
+            this.SplitContainer3.Panel2Collapsed = true;
 
-            // 同じIDのツイートであれば WebBrowser とサムネイルの更新を行わない
-            // (同一ツイートの RT は文面が同じであるため同様に更新しない)
-            if (_curPost.StatusId != oldDisplayPost.StatusId)
+            if (this._cfgCommon.PreviewEnable)
             {
-                using (ControlTransaction.Update(this.PostBrowser))
-                {
-                    this.PostBrowser.DocumentText =
-                        this.createDetailHtml(_curPost.IsDeleted ? "(DELETED)" : _curPost.Text);
-
-                    this.PostBrowser.Document.Window.ScrollTo(0, 0);
-                }
-
-                this.SplitContainer3.Panel2Collapsed = true;
-
-                if (this._cfgCommon.PreviewEnable)
-                {
-                    var oldTokenSource = Interlocked.Exchange(ref this.thumbnailTokenSource, new CancellationTokenSource());
-                    oldTokenSource?.Cancel();
+                var oldTokenSource = Interlocked.Exchange(ref this.thumbnailTokenSource, new CancellationTokenSource());
+                oldTokenSource?.Cancel();
 
-                    var token = this.thumbnailTokenSource.Token;
-                    loadTasks.Add(this.tweetThumbnail1.ShowThumbnailAsync(_curPost, token));
-                }
-
-                loadTasks.Add(this.AppendQuoteTweetAsync(this._curPost));
+                var token = this.thumbnailTokenSource.Token;
+                loadTasks.Add(this.tweetThumbnail1.ShowThumbnailAsync(_curPost, token));
             }
 
             try
@@ -6366,99 +5783,6 @@ namespace OpenTween
             catch (OperationCanceledException) { }
         }
 
-        /// <summary>
-        /// 発言詳細欄のツイートURLを展開する
-        /// </summary>
-        private async Task AppendQuoteTweetAsync(PostClass post)
-        {
-            var quoteStatusIds = post.QuoteStatusIds;
-            if (quoteStatusIds.Length == 0 && post.InReplyToStatusId == null)
-                return;
-
-            // 「読み込み中」テキストを表示
-            var loadingQuoteHtml = quoteStatusIds.Select(x => FormatQuoteTweetHtml(x, Properties.Resources.LoadingText, isReply: false));
-
-            var loadingReplyHtml = string.Empty;
-            if (post.InReplyToStatusId != null)
-                loadingReplyHtml = FormatQuoteTweetHtml(post.InReplyToStatusId.Value, Properties.Resources.LoadingText, isReply: true);
-
-            var body = post.Text + string.Concat(loadingQuoteHtml) + loadingReplyHtml;
-
-            using (ControlTransaction.Update(this.PostBrowser))
-                this.PostBrowser.DocumentText = this.createDetailHtml(body);
-
-            // 引用ツイートを読み込み
-            var loadTweetTasks = quoteStatusIds.Select(x => this.CreateQuoteTweetHtml(x, isReply: false)).ToList();
-
-            if (post.InReplyToStatusId != null)
-                loadTweetTasks.Add(this.CreateQuoteTweetHtml(post.InReplyToStatusId.Value, isReply: true));
-
-            var quoteHtmls = await Task.WhenAll(loadTweetTasks);
-
-            // 非同期処理中に表示中のツイートが変わっていたらキャンセルされたものと扱う
-            if (this._curPost != post || this._curPost.IsDeleted)
-                return;
-
-            body = post.Text + string.Concat(quoteHtmls);
-
-            using (ControlTransaction.Update(this.PostBrowser))
-                this.PostBrowser.DocumentText = this.createDetailHtml(body);
-        }
-
-        private async Task<string> CreateQuoteTweetHtml(long statusId, bool isReply)
-        {
-            PostClass post = this._statuses[statusId];
-            if (post == null)
-            {
-                try
-                {
-                    post = await this.tw.GetStatusApi(false, statusId)
-                        .ConfigureAwait(false);
-                }
-                catch (WebApiException ex)
-                {
-                    return FormatQuoteTweetHtml(statusId, WebUtility.HtmlEncode($"Err:{ex.Message}(GetStatus)"), isReply);
-                }
-
-                post.IsRead = true;
-                if (!this._statuses.AddQuoteTweet(post))
-                    return FormatQuoteTweetHtml(statusId, "This Tweet is unavailable.", isReply);
-            }
-
-            return FormatQuoteTweetHtml(post, isReply);
-        }
-
-        internal static string FormatQuoteTweetHtml(PostClass post, bool isReply)
-        {
-            var innerHtml = "<p>" + StripLinkTagHtml(post.Text) + "</p>" +
-                " &mdash; " + WebUtility.HtmlEncode(post.Nickname) +
-                " (@" + WebUtility.HtmlEncode(post.ScreenName) + ") " +
-                WebUtility.HtmlEncode(post.CreatedAt.ToString());
-
-            return FormatQuoteTweetHtml(post.StatusId, innerHtml, isReply);
-        }
-
-        internal static string FormatQuoteTweetHtml(long statusId, string innerHtml, bool isReply)
-        {
-            var blockClassName = "quote-tweet";
-
-            if (isReply)
-                blockClassName += " reply";
-
-            return "<a class=\"quote-tweet-link\" href=\"//opentween/status/" + statusId + "\">" +
-                $"<blockquote class=\"{blockClassName}\">{innerHtml}</blockquote>" +
-                "</a>";
-        }
-
-        /// <summary>
-        /// 指定されたHTMLからリンクを除去します
-        /// </summary>
-        internal static string StripLinkTagHtml(string html)
-        {
-            // a 要素はネストされていない前提の正規表現パターン
-            return Regex.Replace(html, @"<a[^>]*>(.*?)</a>", "$1");
-        }
-
         private async void MatomeMenuItem_Click(object sender, EventArgs e)
         {
             await this.OpenApplicationWebsite();
@@ -6889,16 +6213,16 @@ namespace OpenTween
                     .Do(() => this.doShowUserStatus(_curPost.ScreenName, ShowInputDialog: false)),
 
                 ShortcutCommand.Create(Keys.Alt | Keys.Up)
-                    .Do(() => this.ScrollDownPostBrowser(forward: false)),
+                    .Do(() => this.tweetDetailsView.ScrollDownPostBrowser(forward: false)),
 
                 ShortcutCommand.Create(Keys.Alt | Keys.Down)
-                    .Do(() => this.ScrollDownPostBrowser(forward: true)),
+                    .Do(() => this.tweetDetailsView.ScrollDownPostBrowser(forward: true)),
 
                 ShortcutCommand.Create(Keys.Alt | Keys.PageUp)
-                    .Do(() => this.PageDownPostBrowser(forward: false)),
+                    .Do(() => this.tweetDetailsView.PageDownPostBrowser(forward: false)),
 
                 ShortcutCommand.Create(Keys.Alt | Keys.PageDown)
-                    .Do(() => this.PageDownPostBrowser(forward: true)),
+                    .Do(() => this.tweetDetailsView.PageDownPostBrowser(forward: true)),
 
                 // 別タブの同じ書き込みへ(ALT+←/→)
                 ShortcutCommand.Create(Keys.Alt | Keys.Right)
@@ -7048,7 +6372,7 @@ namespace OpenTween
 
                 ShortcutCommand.Create(Keys.Alt | Keys.Shift | Keys.T)
                     .OnlyWhen(() => this.ExistCurrentPost)
-                    .Do(() => this.doTranslation(_curPost.TextFromApi)),
+                    .Do(() => this.tweetDetailsView.DoTranslation()),
 
                 ShortcutCommand.Create(Keys.Alt | Keys.Shift | Keys.R)
                     .Do(() => this.doReTweetUnofficial()),
@@ -7069,7 +6393,7 @@ namespace OpenTween
             };
         }
 
-        private bool CommonKeyDown(Keys keyData, FocusedControl focusedOn, out Task asyncTask)
+        internal bool CommonKeyDown(Keys keyData, FocusedControl focusedOn, out Task asyncTask)
         {
             // Task を返す非同期処理があれば asyncTask に代入する
             asyncTask = null;
@@ -7087,36 +6411,6 @@ namespace OpenTween
             return false;
         }
 
-        private void ScrollDownPostBrowser(bool forward)
-        {
-            var doc = PostBrowser.Document;
-            if (doc == null) return;
-
-            var tags = doc.GetElementsByTagName("html");
-            if (tags.Count > 0)
-            {
-                if (forward)
-                    tags[0].ScrollTop += this._fntDetail.Height;
-                else
-                    tags[0].ScrollTop -= this._fntDetail.Height;
-            }
-        }
-
-        private void PageDownPostBrowser(bool forward)
-        {
-            var doc = PostBrowser.Document;
-            if (doc == null) return;
-
-            var tags = doc.GetElementsByTagName("html");
-            if (tags.Count > 0)
-            {
-                if (forward)
-                    tags[0].ScrollTop += PostBrowser.ClientRectangle.Height - this._fntDetail.Height;
-                else
-                    tags[0].ScrollTop -= PostBrowser.ClientRectangle.Height - this._fntDetail.Height;
-            }
-        }
-
         private void GoNextTab(bool forward)
         {
             int idx = ListTab.SelectedIndex;
@@ -7143,11 +6437,6 @@ namespace OpenTween
             foreach (int idx in _curList.SelectedIndices)
             {
                 PostClass post = _statuses.Tabs[_curTab.Text][idx];
-                if (post.IsProtect)
-                {
-                    IsProtected = true;
-                    continue;
-                }
                 if (post.IsDeleted) continue;
                 if (!isDm)
                 {
@@ -7181,28 +6470,30 @@ namespace OpenTween
 
         private void CopyIdUri()
         {
-            string clstr = "";
-            StringBuilder sb = new StringBuilder();
-            if (this._curTab == null) return;
-            if (this._statuses.GetTabByName(this._curTab.Text) == null) return;
-            if (this._statuses.GetTabByName(this._curTab.Text).TabType == MyCommon.TabUsageType.DirectMessage) return;
+            if (this._curTab == null)
+                return;
+
+            var tab = this._statuses.GetTabByName(this._curTab.Text);
+            if (tab == null || tab is DirectMessagesTabModel)
+                return;
+
+            var copyUrls = new List<string>();
             foreach (int idx in _curList.SelectedIndices)
             {
-                var post = _statuses.Tabs[_curTab.Text][idx];
-                sb.Append(MyCommon.GetStatusUrl(post));
-                sb.Append(Environment.NewLine);
+                var post = tab[idx];
+                copyUrls.Add(MyCommon.GetStatusUrl(post));
             }
-            if (sb.Length > 0)
+
+            if (copyUrls.Count == 0)
+                return;
+
+            try
             {
-                clstr = sb.ToString();
-                try
-                {
-                    Clipboard.SetDataObject(clstr, false, 5, 100);
-                }
-                catch (Exception ex)
-                {
-                    MessageBox.Show(ex.Message);
-                }
+                Clipboard.SetDataObject(string.Join(Environment.NewLine, copyUrls), false, 5, 100);
+            }
+            catch (ExternalException ex)
+            {
+                MessageBox.Show(ex.Message);
             }
         }
 
@@ -7255,16 +6546,19 @@ namespace OpenTween
 
         private void GoSamePostToAnotherTab(bool left)
         {
-            if (_curList.VirtualListSize == 0) return;
-            int fIdx = 0;
-            int toIdx = 0;
-            int stp = 1;
-            long targetId = 0;
+            if (this._curList.SelectedIndices.Count == 0)
+                return;
+
+            var tab = this._statuses.Tabs[this._curTab.Text];
 
-            if (_statuses.Tabs[_curTab.Text].TabType == MyCommon.TabUsageType.DirectMessage) return; // Directタブは対象外(見つかるはずがない)
-            if (_curList.SelectedIndices.Count == 0) return; //未選択も処理しない
+            // Directタブは対象外(見つかるはずがない)
+            if (tab.TabType == MyCommon.TabUsageType.DirectMessage)
+                return;
+
+            var selectedIndex = this._curList.SelectedIndices[0];
+            var selectedStatusId = tab.GetStatusIdAt(selectedIndex);
 
-            targetId = GetCurTabPost(_curList.SelectedIndices[0]).StatusId;
+            int fIdx, toIdx, stp;
 
             if (left)
             {
@@ -7295,42 +6589,45 @@ namespace OpenTween
                 stp = 1;
             }
 
-            bool found = false;
             for (int tabidx = fIdx; tabidx != toIdx; tabidx += stp)
             {
-                if (_statuses.Tabs[ListTab.TabPages[tabidx].Text].TabType == MyCommon.TabUsageType.DirectMessage) continue; // Directタブは対象外
-                for (int idx = 0; idx < ((DetailsListView)ListTab.TabPages[tabidx].Tag).VirtualListSize; idx++)
+                var targetTab = this._statuses.Tabs[this.ListTab.TabPages[tabidx].Text];
+
+                // Directタブは対象外
+                if (targetTab.TabType == MyCommon.TabUsageType.DirectMessage)
+                    continue;
+
+                var foundIndex = targetTab.IndexOf(selectedStatusId);
+                if (foundIndex != -1)
                 {
-                    if (_statuses.Tabs[ListTab.TabPages[tabidx].Text][idx].StatusId == targetId)
-                    {
-                        ListTab.SelectedIndex = tabidx;
-                        SelectListItem(_curList, idx);
-                        _curList.EnsureVisible(idx);
-                        found = true;
-                        break;
-                    }
+                    ListTab.SelectedIndex = tabidx;
+                    SelectListItem(_curList, foundIndex);
+                    _curList.EnsureVisible(foundIndex);
+                    return;
                 }
-                if (found) break;
             }
         }
 
         private void GoPost(bool forward)
         {
-            if (_curList.SelectedIndices.Count == 0 || _curPost == null) return;
-            int fIdx = 0;
-            int toIdx = 0;
-            int stp = 1;
+            if (_curList.SelectedIndices.Count == 0 || _curPost == null)
+                return;
+
+            var tab = this._statuses.Tabs[this._curTab.Text];
+            var selectedIndex = this._curList.SelectedIndices[0];
+
+            int fIdx, toIdx, stp;
 
             if (forward)
             {
-                fIdx = _curList.SelectedIndices[0] + 1;
-                if (fIdx > _curList.VirtualListSize - 1) return;
-                toIdx = _curList.VirtualListSize;
+                fIdx = selectedIndex + 1;
+                if (fIdx > tab.AllCount - 1) return;
+                toIdx = tab.AllCount;
                 stp = 1;
             }
             else
             {
-                fIdx = _curList.SelectedIndices[0] - 1;
+                fIdx = selectedIndex - 1;
                 if (fIdx < 0) return;
                 toIdx = -1;
                 stp = -1;
@@ -7347,9 +6644,10 @@ namespace OpenTween
             }
             for (int idx = fIdx; idx != toIdx; idx += stp)
             {
-                if (_statuses.Tabs[_curTab.Text][idx].RetweetedId == null)
+                var post = tab[idx];
+                if (post.RetweetedId == null)
                 {
-                    if (_statuses.Tabs[_curTab.Text][idx].ScreenName == name)
+                    if (post.ScreenName == name)
                     {
                         SelectListItem(_curList, idx);
                         _curList.EnsureVisible(idx);
@@ -7358,7 +6656,7 @@ namespace OpenTween
                 }
                 else
                 {
-                    if (_statuses.Tabs[_curTab.Text][idx].RetweetedBy == name)
+                    if (post.RetweetedBy == name)
                     {
                         SelectListItem(_curList, idx);
                         _curList.EnsureVisible(idx);
@@ -7370,21 +6668,24 @@ namespace OpenTween
 
         private void GoRelPost(bool forward)
         {
-            if (_curList.SelectedIndices.Count == 0) return;
+            if (this._curList.SelectedIndices.Count == 0)
+                return;
+
+            var tab = this._statuses.Tabs[this._curTab.Text];
+            var selectedIndex = this._curList.SelectedIndices[0];
+
+            int fIdx, toIdx, stp;
 
-            int fIdx = 0;
-            int toIdx = 0;
-            int stp = 1;
             if (forward)
             {
-                fIdx = _curList.SelectedIndices[0] + 1;
-                if (fIdx > _curList.VirtualListSize - 1) return;
-                toIdx = _curList.VirtualListSize;
+                fIdx = selectedIndex + 1;
+                if (fIdx > tab.AllCount - 1) return;
+                toIdx = tab.AllCount;
                 stp = 1;
             }
             else
             {
-                fIdx = _curList.SelectedIndices[0] - 1;
+                fIdx = selectedIndex - 1;
                 if (fIdx < 0) return;
                 toIdx = -1;
                 stp = -1;
@@ -7403,7 +6704,7 @@ namespace OpenTween
 
             for (int idx = fIdx; idx != toIdx; idx += stp)
             {
-                PostClass post = _statuses.Tabs[_curTab.Text][idx];
+                var post = tab[idx];
                 if (post.ScreenName == _anchorPost.ScreenName ||
                     post.RetweetedBy == _anchorPost.ScreenName ||
                     post.ScreenName == _anchorPost.RetweetedBy ||
@@ -7526,7 +6827,7 @@ namespace OpenTween
         {
             if (_curPost == null) return;
 
-            TabClass curTabClass = _statuses.Tabs[_curTab.Text];
+            TabModel curTabClass = _statuses.Tabs[_curTab.Text];
 
             if (curTabClass.TabType == MyCommon.TabUsageType.PublicSearch && _curPost.InReplyToStatusId == null && _curPost.TextFromApi.Contains("@"))
             {
@@ -7586,7 +6887,7 @@ namespace OpenTween
                 catch (WebApiException ex)
                 {
                     this.StatusLabel.Text = $"Err:{ex.Message}(GetStatus)";
-                    await this.OpenUriInBrowserAsync("https://twitter.com/" + inReplyToUser + "/statuses/" + inReplyToId.ToString());
+                    await this.OpenUriInBrowserAsync(MyCommon.GetStatusUrl(inReplyToUser, inReplyToId));
                     return;
                 }
 
@@ -7595,7 +6896,7 @@ namespace OpenTween
                 inReplyPost = inReplyToPosts.FirstOrDefault();
                 if (inReplyPost == null)
                 {
-                    await this.OpenUriInBrowserAsync("https://twitter.com/" + inReplyToUser + "/statuses/" + inReplyToId.ToString());
+                    await this.OpenUriInBrowserAsync(MyCommon.GetStatusUrl(inReplyToUser, inReplyToId));
                     return;
                 }
             }
@@ -7618,7 +6919,7 @@ namespace OpenTween
         {
             if (_curPost == null) return;
 
-            TabClass curTabClass = _statuses.Tabs[_curTab.Text];
+            TabModel curTabClass = _statuses.Tabs[_curTab.Text];
             //Dictionary<long, PostClass> curTabPosts = curTabClass.Posts;
 
             if (parallel)
@@ -7897,8 +7198,8 @@ namespace OpenTween
             if (_ignoreConfigSave || !this._cfgCommon.UseAtIdSupplement && AtIdSupl == null) return;
 
             ModifySettingAtId = false;
-            SettingAtIdList cfgAtId = new SettingAtIdList(AtIdSupl.GetItemList());
-            cfgAtId.Save();
+            SettingManager.AtIdList.AtIdList = this.AtIdSupl.GetItemList();
+            SettingManager.SaveAtIdList();
         }
 
         private void SaveConfigsCommon()
@@ -7910,7 +7211,6 @@ namespace OpenTween
             {
                 _cfgCommon.UserName = tw.Username;
                 _cfgCommon.UserId = tw.UserId;
-                _cfgCommon.Password = tw.Password;
                 _cfgCommon.Token = tw.AccessToken;
                 _cfgCommon.TokenSecret = tw.AccessTokenSecret;
 
@@ -7962,7 +7262,7 @@ namespace OpenTween
                 _cfgCommon.UseImageService = ImageSelector.ServiceIndex;
                 _cfgCommon.UseImageServiceName = ImageSelector.ServiceName;
 
-                _cfgCommon.Save();
+                SettingManager.SaveCommon();
             }
         }
 
@@ -8003,21 +7303,57 @@ namespace OpenTween
                 _cfgLocal.FontInputFont = _fntInputFont;
 
                 if (_ignoreConfigSave) return;
-                _cfgLocal.Save();
+                SettingManager.SaveLocal();
             }
         }
 
         private void SaveConfigsTabs()
         {
-            SettingTabs tabSetting = new SettingTabs();
-            for (int i = 0; i < ListTab.TabPages.Count; i++)
+            var tabSettingList = new List<SettingTabs.SettingTabItem>();
+
+            var tabs = this.ListTab.TabPages.Cast<TabPage>()
+                .Select(x => this._statuses.Tabs[x.Text])
+                .Concat(new[] { this._statuses.GetTabByType(MyCommon.TabUsageType.Mute) });
+
+            foreach (var tab in tabs)
             {
-                var tab = _statuses.Tabs[ListTab.TabPages[i].Text];
-                if (tab.TabType != MyCommon.TabUsageType.Related && tab.TabType != MyCommon.TabUsageType.SearchResults)
-                    tabSetting.Tabs.Add(tab);
+                if (!tab.IsPermanentTabType)
+                    continue;
+
+                var tabSetting = new SettingTabs.SettingTabItem
+                {
+                    TabName = tab.TabName,
+                    TabType = tab.TabType,
+                    UnreadManage = tab.UnreadManage,
+                    Protected = tab.Protected,
+                    Notify = tab.Notify,
+                    SoundFile = tab.SoundFile,
+                };
+
+                var filterTab = tab as FilterTabModel;
+                if (filterTab != null)
+                    tabSetting.FilterArray = filterTab.FilterArray;
+
+                var userTab = tab as UserTimelineTabModel;
+                if (userTab != null)
+                    tabSetting.User = userTab.ScreenName;
+
+                var searchTab = tab as PublicSearchTabModel;
+                if (searchTab != null)
+                {
+                    tabSetting.SearchWords = searchTab.SearchWords;
+                    tabSetting.SearchLang = searchTab.SearchLang;
+                }
+
+                var listTab = tab as ListTimelineTabModel;
+                if (listTab != null)
+                    tabSetting.ListInfo = listTab.ListInfo;
+
+                tabSettingList.Add(tabSetting);
             }
-            tabSetting.Tabs.Add(this._statuses.GetTabByType(MyCommon.TabUsageType.Mute));
-            tabSetting.Save();
+
+            SettingManager.Tabs.Tabs = tabSettingList;
+            SettingManager.SaveTabs();
         }
 
         private async void OpenURLFileMenuItem_Click(object sender, EventArgs e)
@@ -8075,9 +7411,9 @@ namespace OpenTween
                             if (post.IsProtect) protect = "Protect";
                             sw.WriteLine(post.Nickname + "\t" +
                                      "\"" + post.TextFromApi.Replace("\n", "").Replace("\"", "\"\"") + "\"" + "\t" +
-                                     post.CreatedAt.ToString() + "\t" +
+                                     post.CreatedAt + "\t" +
                                      post.ScreenName + "\t" +
-                                     post.StatusId.ToString() + "\t" +
+                                     post.StatusId + "\t" +
                                      post.ImageUrl + "\t" +
                                      "\"" + post.Text.Replace("\n", "").Replace("\"", "\"\"") + "\"" + "\t" +
                                      protect);
@@ -8092,9 +7428,9 @@ namespace OpenTween
                             if (post.IsProtect) protect = "Protect";
                             sw.WriteLine(post.Nickname + "\t" +
                                      "\"" + post.TextFromApi.Replace("\n", "").Replace("\"", "\"\"") + "\"" + "\t" +
-                                     post.CreatedAt.ToString() + "\t" +
+                                     post.CreatedAt + "\t" +
                                      post.ScreenName + "\t" +
-                                     post.StatusId.ToString() + "\t" +
+                                     post.StatusId + "\t" +
                                      post.ImageUrl + "\t" +
                                      "\"" + post.Text.Replace("\n", "").Replace("\"", "\"\"") + "\"" + "\t" +
                                      protect);
@@ -8105,76 +7441,43 @@ namespace OpenTween
             this.TopMost = this._cfgCommon.AlwaysTop;
         }
 
-        private async void PostBrowser_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
-        {
-            Task asyncTask;
-            bool KeyRes = CommonKeyDown(e.KeyData, FocusedControl.PostBrowser, out asyncTask);
-            if (KeyRes)
-            {
-                e.IsInputKey = true;
-            }
-            else
-            {
-                if (Enum.IsDefined(typeof(Shortcut), (Shortcut)e.KeyData))
-                {
-                    var shortcut = (Shortcut)e.KeyData;
-                    switch (shortcut)
-                    {
-                        case Shortcut.CtrlA:
-                        case Shortcut.CtrlC:
-                        case Shortcut.CtrlIns:
-                            // 既定の動作を有効にする
-                            break;
-                        default:
-                            // その他のショートカットキーは無効にする
-                            e.IsInputKey = true;
-                            break;
-                    }
-                }
-            }
-
-            if (asyncTask != null)
-                await asyncTask;
-        }
-        public bool TabRename(ref string tabName)
+        public bool TabRename(string origTabName, out string newTabName)
         {
             //タブ名変更
-            string newTabText = null;
+            newTabName = null;
             using (InputTabName inputName = new InputTabName())
             {
-                inputName.TabName = tabName;
+                inputName.TabName = origTabName;
                 inputName.ShowDialog();
                 if (inputName.DialogResult == DialogResult.Cancel) return false;
-                newTabText = inputName.TabName;
+                newTabName = inputName.TabName;
             }
             this.TopMost = this._cfgCommon.AlwaysTop;
-            if (!string.IsNullOrEmpty(newTabText))
+            if (!string.IsNullOrEmpty(newTabName))
             {
                 //新タブ名存在チェック
                 for (int i = 0; i < ListTab.TabCount; i++)
                 {
-                    if (ListTab.TabPages[i].Text == newTabText)
+                    if (ListTab.TabPages[i].Text == newTabName)
                     {
-                        string tmp = string.Format(Properties.Resources.Tabs_DoubleClickText1, newTabText);
+                        string tmp = string.Format(Properties.Resources.Tabs_DoubleClickText1, newTabName);
                         MessageBox.Show(tmp, Properties.Resources.Tabs_DoubleClickText2, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                         return false;
                     }
                 }
-                //タブ名を変更
-                for (int i = 0; i < ListTab.TabCount; i++)
-                {
-                    if (ListTab.TabPages[i].Text == tabName)
-                    {
-                        ListTab.TabPages[i].Text = newTabText;
-                        break;
-                    }
-                }
-                _statuses.RenameTab(tabName, newTabText);
+
+                var tabPage = this.ListTab.TabPages.Cast<TabPage>()
+                    .FirstOrDefault(x => x.Text == origTabName);
+
+                // タブ名を変更
+                if (tabPage != null)
+                    tabPage.Text = newTabName;
+
+                _statuses.RenameTab(origTabName, newTabName);
 
                 SaveConfigsCommon();
                 SaveConfigsTabs();
-                _rclickTabName = newTabText;
-                tabName = newTabText;
+                _rclickTabName = newTabName;
                 return true;
             }
             else
@@ -8201,14 +7504,13 @@ namespace OpenTween
 
         private void ListTab_DoubleClick(object sender, MouseEventArgs e)
         {
-            string tn = ListTab.SelectedTab.Text;
-            TabRename(ref tn);
+            string _;
+            TabRename(this.ListTab.SelectedTab.Text, out _);
         }
 
         private void ListTab_MouseDown(object sender, MouseEventArgs e)
         {
             if (this._cfgCommon.TabMouseLock) return;
-            Point cpos = new Point(e.X, e.Y);
             if (e.Button == MouseButtons.Left)
             {
                 for (int i = 0; i < ListTab.TabPages.Count; i++)
@@ -8640,7 +7942,7 @@ namespace OpenTween
                 return;
             }
 
-            TabClass tb = _statuses.GetTabByType(MyCommon.TabUsageType.Mentions);
+            TabModel tb = _statuses.GetTabByType(MyCommon.TabUsageType.Mentions);
             if (this._cfgCommon.ReplyIconState != MyCommon.REPLY_ICONSTATE.None && tb != null && tb.UnreadCount > 0)
             {
                 if (blinkCnt > 0) return;
@@ -8696,8 +7998,9 @@ namespace OpenTween
             if (_statuses == null) return;
             if (_statuses.Tabs == null) return;
 
-            TabClass tb = _statuses.Tabs[_rclickTabName];
-            if (tb == null) return;
+            TabModel tb;
+            if (!this._statuses.Tabs.TryGetValue(this._rclickTabName, out tb))
+                return;
 
             NotifyDispMenuItem.Checked = tb.Notify;
             this.NotifyTbMenuItem.Checked = tb.Notify;
@@ -8889,7 +8192,24 @@ namespace OpenTween
                         list = listAvail.SelectedList;
                     }
                 }
-                if (!_statuses.AddTab(tabName, tabUsage, list) || !AddNewTab(tabName, false, tabUsage, list))
+
+                TabModel tab;
+                switch (tabUsage)
+                {
+                    case MyCommon.TabUsageType.UserDefined:
+                        tab = new FilterTabModel(tabName);
+                        break;
+                    case MyCommon.TabUsageType.PublicSearch:
+                        tab = new PublicSearchTabModel(tabName);
+                        break;
+                    case MyCommon.TabUsageType.Lists:
+                        tab = new ListTimelineTabModel(tabName, list);
+                        break;
+                    default:
+                        return;
+                }
+
+                if (!_statuses.AddTab(tab) || !AddNewTab(tab, startup: false))
                 {
                     string tmp = string.Format(Properties.Resources.AddTabMenuItem_ClickText1, tabName);
                     MessageBox.Show(tmp, Properties.Resources.AddTabMenuItem_ClickText2, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
@@ -8906,8 +8226,8 @@ namespace OpenTween
                     if (tabUsage == MyCommon.TabUsageType.Lists)
                     {
                         ListTab.SelectedIndex = ListTab.TabPages.Count - 1;
-                        var tab = this._statuses.Tabs[this._curTab.Text];
-                        this.GetListTimelineAsync(tab);
+                        var listTab = (ListTimelineTabModel)this._statuses.Tabs[this._curTab.Text];
+                        this.GetListTimelineAsync(listTab);
                     }
                 }
             }
@@ -9040,15 +8360,49 @@ namespace OpenTween
 
         private void IDRuleMenuItem_Click(object sender, EventArgs e)
         {
-            string tabName;
-
             //未選択なら処理終了
             if (_curList.SelectedIndices.Count == 0) return;
 
+            var tab = this._statuses.Tabs[this._curTab.Text];
+            var screenNameArray = this._curList.SelectedIndices.Cast<int>()
+                .Select(x => tab[x])
+                .Select(x => x.RetweetedId != null ? x.RetweetedBy : x.ScreenName)
+                .ToArray();
+
+            this.AddFilterRuleByScreenName(screenNameArray);
+
+            if (screenNameArray.Length != 0)
+            {
+                List<string> atids = new List<string>();
+                foreach (var screenName in screenNameArray)
+                {
+                    atids.Add("@" + screenName);
+                }
+                int cnt = AtIdSupl.ItemCount;
+                AtIdSupl.AddRangeItem(atids.ToArray());
+                if (AtIdSupl.ItemCount != cnt) ModifySettingAtId = true;
+            }
+        }
+
+        private void SourceRuleMenuItem_Click(object sender, EventArgs e)
+        {
+            if (this._curList.SelectedIndices.Count == 0)
+                return;
+
+            var tab = this._statuses.Tabs[this._curTab.Text];
+            var sourceArray = this._curList.SelectedIndices.Cast<int>()
+                .Select(x => tab[x].Source).ToArray();
+
+            this.AddFilterRuleBySource(sourceArray);
+        }
+
+        public void AddFilterRuleByScreenName(params string[] screenNameArray)
+        {
             //タブ選択(or追加)
+            string tabName;
             if (!SelectTab(out tabName)) return;
 
-            var tab = this._statuses.Tabs[tabName];
+            var tab = (FilterTabModel)this._statuses.Tabs[tabName];
 
             bool mv;
             bool mk;
@@ -9063,58 +8417,31 @@ namespace OpenTween
                 mk = false;
             }
 
-            List<string> ids = new List<string>();
-            foreach (int idx in _curList.SelectedIndices)
-            {
-                PostClass post = _statuses.Tabs[_curTab.Text][idx];
-                if (!ids.Contains(post.ScreenName))
-                {
-                    PostFilterRule fc = new PostFilterRule();
-                    ids.Add(post.ScreenName);
-                    if (post.RetweetedId == null)
-                    {
-                        fc.FilterName = post.ScreenName;
-                    }
-                    else
-                    {
-                        fc.FilterName = post.RetweetedBy;
-                    }
-                    fc.UseNameField = true;
-                    fc.MoveMatches = mv;
-                    fc.MarkMatches = mk;
-                    fc.UseRegex = false;
-                    fc.FilterByUrl = false;
-                    tab.AddFilter(fc);
-                }
-            }
-            if (ids.Count != 0)
+            foreach (var screenName in screenNameArray)
             {
-                List<string> atids = new List<string>();
-                foreach (string id in ids)
+                tab.AddFilter(new PostFilterRule
                 {
-                    atids.Add("@" + id);
-                }
-                int cnt = AtIdSupl.ItemCount;
-                AtIdSupl.AddRangeItem(atids.ToArray());
-                if (AtIdSupl.ItemCount != cnt) ModifySettingAtId = true;
+                    FilterName = screenName,
+                    UseNameField = true,
+                    MoveMatches = mv,
+                    MarkMatches = mk,
+                    UseRegex = false,
+                    FilterByUrl = false,
+                });
             }
 
             this.ApplyPostFilters();
             SaveConfigsTabs();
         }
 
-        private void SourceRuleMenuItem_Click(object sender, EventArgs e)
+        public void AddFilterRuleBySource(params string[] sourceArray)
         {
-            if (this._curList.SelectedIndices.Count == 0)
-                return;
-
             // タブ選択ダイアログを表示(or追加)
             string tabName;
             if (!this.SelectTab(out tabName))
                 return;
 
-            var currentTab = this._statuses.Tabs[this._curTab.Text];
-            var filterTab = this._statuses.Tabs[tabName];
+            var filterTab = (FilterTabModel)this._statuses.Tabs[tabName];
 
             bool mv;
             bool mk;
@@ -9131,25 +8458,16 @@ namespace OpenTween
             }
 
             // 振り分けルールに追加するSource
-            var sources = new HashSet<string>();
-
-            foreach (var idx in this._curList.SelectedIndices.Cast<int>())
+            foreach (var source in sourceArray)
             {
-                var post = currentTab[idx];
-                var filterSource = post.Source;
-
-                if (sources.Add(filterSource))
+                filterTab.AddFilter(new PostFilterRule
                 {
-                    var filter = new PostFilterRule
-                    {
-                        FilterSource = filterSource,
-                        MoveMatches = mv,
-                        MarkMatches = mk,
-                        UseRegex = false,
-                        FilterByUrl = false,
-                    };
-                    filterTab.AddFilter(filter);
-                }
+                    FilterSource = source,
+                    MoveMatches = mv,
+                    MarkMatches = mk,
+                    UseRegex = false,
+                    FilterByUrl = false,
+                });
             }
 
             this.ApplyPostFilters();
@@ -9185,7 +8503,8 @@ namespace OpenTween
                     this.TopMost = this._cfgCommon.AlwaysTop;
                     if (!string.IsNullOrEmpty(tabName))
                     {
-                        if (!_statuses.AddTab(tabName, MyCommon.TabUsageType.UserDefined, null) || !AddNewTab(tabName, false, MyCommon.TabUsageType.UserDefined))
+                        var tab = new FilterTabModel(tabName);
+                        if (!_statuses.AddTab(tab) || !AddNewTab(tab, startup: false))
                         {
                             string tmp = string.Format(Properties.Resources.IDRuleMenuItem_ClickText2, tabName);
                             MessageBox.Show(tmp, Properties.Resources.IDRuleMenuItem_ClickText3, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
@@ -9285,9 +8604,7 @@ namespace OpenTween
 
         private async void OpenURLMenuItem_Click(object sender, EventArgs e)
         {
-            var linkElements = this.PostBrowser.Document.Links.Cast<HtmlElement>()
-                .Where(x => x.GetAttribute("className") != "tweet-quote-link") // 引用ツイートで追加されたリンクを除く
-                .ToArray();
+            var linkElements = this.tweetDetailsView.GetLinkElements();
 
             if (linkElements.Length > 0)
             {
@@ -9398,8 +8715,8 @@ namespace OpenTween
             {
                 if (tb.Text == tabName)
                 {
-                    tb.ImageIndex = -1;
                     ((DetailsListView)tb.Tag).VirtualListSize = 0;
+                    tb.ImageIndex = -1;
                     break;
                 }
             }
@@ -9474,8 +8791,8 @@ namespace OpenTween
             //ステータス欄にカウント表示
             //タブ未読数/タブ発言数 全未読数/総発言数 (未読@+未読DM数)
             if (_statuses == null) return "";
-            TabClass tbRep = _statuses.GetTabByType(MyCommon.TabUsageType.Mentions);
-            TabClass tbDm = _statuses.GetTabByType(MyCommon.TabUsageType.DirectMessage);
+            TabModel tbRep = _statuses.GetTabByType(MyCommon.TabUsageType.Mentions);
+            TabModel tbDm = _statuses.GetTabByType(MyCommon.TabUsageType.DirectMessage);
             if (tbRep == null || tbDm == null) return "";
             int urat = tbRep.UnreadCount + tbDm.UnreadCount;
             int ur = 0;
@@ -9504,7 +8821,9 @@ namespace OpenTween
             UnreadCounter = ur;
             UnreadAtCounter = urat;
 
-            slbl.AppendFormat(Properties.Resources.SetStatusLabelText1, tur, tal, ur, al, urat, _postTimestamps.Count, _favTimestamps.Count, _tlCount);
+            var homeTab = this._statuses.GetTabByType<HomeTabModel>();
+
+            slbl.AppendFormat(Properties.Resources.SetStatusLabelText1, tur, tal, ur, al, urat, _postTimestamps.Count, _favTimestamps.Count, homeTab.TweetsPerHour);
             if (this._cfgCommon.TimelinePeriod == 0)
             {
                 slbl.Append(Properties.Resources.SetStatusLabelText2);
@@ -9516,13 +8835,13 @@ namespace OpenTween
             return slbl.ToString();
         }
 
-        private void TwitterApiStatus_AccessLimitUpdated(object sender, EventArgs e)
+        private async void TwitterApiStatus_AccessLimitUpdated(object sender, EventArgs e)
         {
             try
             {
                 if (this.InvokeRequired && !this.IsDisposed)
                 {
-                    this.Invoke((MethodInvoker)(() => this.TwitterApiStatus_AccessLimitUpdated(sender, e)));
+                    await this.InvokeAsync(() => this.TwitterApiStatus_AccessLimitUpdated(sender, e));
                 }
                 else
                 {
@@ -9656,10 +8975,10 @@ namespace OpenTween
             StatusLabel.Text = text;
         }
 
-        private static StringBuilder ur = new StringBuilder(64);
-
         private void SetNotifyIconText()
         {
+            var ur = new StringBuilder(64);
+
             // タスクトレイアイコンのツールチップテキスト書き換え
             // Tween [未読/@]
             ur.Remove(0, ur.Length);
@@ -9858,15 +9177,15 @@ namespace OpenTween
                 if (_statuses.ContainsKey(_curPost.InReplyToStatusId.Value))
                 {
                     PostClass repPost = _statuses[_curPost.InReplyToStatusId.Value];
-                    MessageBox.Show(repPost.ScreenName + " / " + repPost.Nickname + "   (" + repPost.CreatedAt.ToString() + ")" + Environment.NewLine + repPost.TextFromApi);
+                    MessageBox.Show($"{repPost.ScreenName} / {repPost.Nickname}   ({repPost.CreatedAt})" + Environment.NewLine + repPost.TextFromApi);
                 }
                 else
                 {
-                    foreach (TabClass tb in _statuses.GetTabsByType(MyCommon.TabUsageType.Lists | MyCommon.TabUsageType.PublicSearch))
+                    foreach (TabModel tb in _statuses.GetTabsByType(MyCommon.TabUsageType.Lists | MyCommon.TabUsageType.PublicSearch))
                     {
                         if (tb == null || !tb.Contains(_curPost.InReplyToStatusId.Value)) break;
                         PostClass repPost = _statuses[_curPost.InReplyToStatusId.Value];
-                        MessageBox.Show(repPost.ScreenName + " / " + repPost.Nickname + "   (" + repPost.CreatedAt.ToString() + ")" + Environment.NewLine + repPost.TextFromApi);
+                        MessageBox.Show($"{repPost.ScreenName} / {repPost.Nickname}   ({repPost.CreatedAt})" + Environment.NewLine + repPost.TextFromApi);
                         return;
                     }
                     await this.OpenUriInBrowserAsync(MyCommon.GetStatusUrl(_curPost.InReplyToUser, _curPost.InReplyToStatusId.Value));
@@ -9879,179 +9198,6 @@ namespace OpenTween
             await this.doRepliedStatusOpen();
         }
 
-        /// <summary>
-        /// UserPicture.Image に設定されている画像を破棄します。
-        /// </summary>
-        private void ClearUserPicture()
-        {
-            if (this.UserPicture.Image != null)
-            {
-                var oldImage = this.UserPicture.Image;
-                this.UserPicture.Image = null;
-                oldImage.Dispose();
-            }
-        }
-
-        private void ContextMenuUserPicture_Opening(object sender, CancelEventArgs e)
-        {
-            //発言詳細のアイコン右クリック時のメニュー制御
-            if (_curList.SelectedIndices.Count > 0 && _curPost != null)
-            {
-                string name = _curPost.ImageUrl;
-                if (name != null && name.Length > 0)
-                {
-                    int idx = name.LastIndexOf('/');
-                    if (idx != -1)
-                    {
-                        name = Path.GetFileName(name.Substring(idx));
-                        if (name.Contains("_normal.") || name.EndsWith("_normal", StringComparison.Ordinal))
-                        {
-                            name = name.Replace("_normal", "");
-                            this.IconNameToolStripMenuItem.Text = name;
-                            this.IconNameToolStripMenuItem.Enabled = true;
-                        }
-                        else
-                        {
-                            this.IconNameToolStripMenuItem.Enabled = false;
-                            this.IconNameToolStripMenuItem.Text = Properties.Resources.ContextMenuStrip3_OpeningText1;
-                        }
-                    }
-                    else
-                    {
-                        this.IconNameToolStripMenuItem.Enabled = false;
-                        this.IconNameToolStripMenuItem.Text = Properties.Resources.ContextMenuStrip3_OpeningText1;
-                    }
-
-                    this.ReloadIconToolStripMenuItem.Enabled = true;
-
-                    if (this.IconCache.TryGetFromCache(_curPost.ImageUrl) != null)
-                    {
-                        this.SaveIconPictureToolStripMenuItem.Enabled = true;
-                    }
-                    else
-                    {
-                        this.SaveIconPictureToolStripMenuItem.Enabled = false;
-                    }
-                }
-                else
-                {
-                    this.IconNameToolStripMenuItem.Enabled = false;
-                    this.ReloadIconToolStripMenuItem.Enabled = false;
-                    this.SaveIconPictureToolStripMenuItem.Enabled = false;
-                    this.IconNameToolStripMenuItem.Text = Properties.Resources.ContextMenuStrip3_OpeningText1;
-                }
-            }
-            else
-            {
-                this.IconNameToolStripMenuItem.Enabled = false;
-                this.ReloadIconToolStripMenuItem.Enabled = false;
-                this.SaveIconPictureToolStripMenuItem.Enabled = false;
-                this.IconNameToolStripMenuItem.Text = Properties.Resources.ContextMenuStrip3_OpeningText2;
-            }
-            if (NameLabel.Tag != null)
-            {
-                string id = (string)NameLabel.Tag;
-                if (id == tw.Username)
-                {
-                    FollowToolStripMenuItem.Enabled = false;
-                    UnFollowToolStripMenuItem.Enabled = false;
-                    ShowFriendShipToolStripMenuItem.Enabled = false;
-                    ShowUserStatusToolStripMenuItem.Enabled = true;
-                    SearchPostsDetailNameToolStripMenuItem.Enabled = true;
-                    SearchAtPostsDetailNameToolStripMenuItem.Enabled = false;
-                    ListManageUserContextToolStripMenuItem3.Enabled = true;
-                }
-                else
-                {
-                    FollowToolStripMenuItem.Enabled = true;
-                    UnFollowToolStripMenuItem.Enabled = true;
-                    ShowFriendShipToolStripMenuItem.Enabled = true;
-                    ShowUserStatusToolStripMenuItem.Enabled = true;
-                    SearchPostsDetailNameToolStripMenuItem.Enabled = true;
-                    SearchAtPostsDetailNameToolStripMenuItem.Enabled = true;
-                    ListManageUserContextToolStripMenuItem3.Enabled = true;
-                }
-            }
-            else
-            {
-                FollowToolStripMenuItem.Enabled = false;
-                UnFollowToolStripMenuItem.Enabled = false;
-                ShowFriendShipToolStripMenuItem.Enabled = false;
-                ShowUserStatusToolStripMenuItem.Enabled = false;
-                SearchPostsDetailNameToolStripMenuItem.Enabled = false;
-                SearchAtPostsDetailNameToolStripMenuItem.Enabled = false;
-                ListManageUserContextToolStripMenuItem3.Enabled = false;
-            }
-        }
-
-        private async void IconNameToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (_curPost == null) return;
-            string name = _curPost.ImageUrl;
-            await this.OpenUriInBrowserAsync(name.Remove(name.LastIndexOf("_normal"), 7)); // "_normal".Length
-        }
-
-        private async void ReloadIconToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (this._curPost == null) return;
-
-            await this.UserPicture.SetImageFromTask(async () =>
-            {
-                var imageUrl = this._curPost.ImageUrl;
-
-                var image = await this.IconCache.DownloadImageAsync(imageUrl, force: true)
-                    .ConfigureAwait(false);
-
-                return await image.CloneAsync()
-                    .ConfigureAwait(false);
-            });
-        }
-
-        private void SaveOriginalSizeIconPictureToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (_curPost == null) return;
-            string name = _curPost.ImageUrl;
-            name = Path.GetFileNameWithoutExtension(name.Substring(name.LastIndexOf('/')));
-
-            this.SaveFileDialog1.FileName = name.Substring(0, name.Length - 8); // "_normal".Length + 1
-
-            if (this.SaveFileDialog1.ShowDialog() == DialogResult.OK)
-            {
-                // STUB
-            }
-        }
-
-        private void SaveIconPictureToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (_curPost == null) return;
-            string name = _curPost.ImageUrl;
-
-            this.SaveFileDialog1.FileName = name.Substring(name.LastIndexOf('/') + 1);
-
-            if (this.SaveFileDialog1.ShowDialog() == DialogResult.OK)
-            {
-                try
-                {
-                    using (Image orgBmp = new Bitmap(IconCache.TryGetFromCache(name).Image))
-                    {
-                        using (Bitmap bmp2 = new Bitmap(orgBmp.Size.Width, orgBmp.Size.Height))
-                        {
-                            using (Graphics g = Graphics.FromImage(bmp2))
-                            {
-                                g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
-                                g.DrawImage(orgBmp, 0, 0, orgBmp.Size.Width, orgBmp.Size.Height);
-                            }
-                            bmp2.Save(this.SaveFileDialog1.FileName);
-                        }
-                    }
-                }
-                catch (Exception)
-                {
-                    //処理中にキャッシュアウトする可能性あり
-                }
-            }
-        }
-
         private void SplitContainer2_Panel2_Resize(object sender, EventArgs e)
         {
             var multiline = this.SplitContainer2.Panel2.Height > this.SplitContainer2.Panel2MinSize + 2;
@@ -10110,7 +9256,7 @@ namespace OpenTween
             {
                 string tmp = StatusText.SelectedText;
                 // httpから始まらない場合、ExcludeStringで指定された文字列で始まる場合は対象としない
-                if (tmp.StartsWith("http"))
+                if (tmp.StartsWith("http", StringComparison.OrdinalIgnoreCase))
                 {
                     // 文字列が選択されている場合はその文字列について処理
 
@@ -10485,194 +9631,6 @@ namespace OpenTween
             //}
         }
 
-        private void SelectionCopyContextMenuItem_Click(object sender, EventArgs e)
-        {
-            //発言詳細で「選択文字列をコピー」
-            string _selText = this.PostBrowser.GetSelectedText();
-            try
-            {
-                Clipboard.SetDataObject(_selText, false, 5, 100);
-            }
-            catch (Exception ex)
-            {
-                MessageBox.Show(ex.Message);
-            }
-        }
-
-        private async Task doSearchToolStrip(string url)
-        {
-            //発言詳細で「選択文字列で検索」(選択文字列取得)
-            string _selText = this.PostBrowser.GetSelectedText();
-
-            if (_selText != null)
-            {
-                if (url == Properties.Resources.SearchItem4Url)
-                {
-                    //公式検索
-                    AddNewTabForSearch(_selText);
-                    return;
-                }
-
-                string tmp = string.Format(url, Uri.EscapeDataString(_selText));
-                await this.OpenUriInBrowserAsync(tmp);
-            }
-        }
-
-        private void SelectionAllContextMenuItem_Click(object sender, EventArgs e)
-        {
-            //発言詳細ですべて選択
-            PostBrowser.Document.ExecCommand("SelectAll", false, null);
-        }
-
-        private async void SearchWikipediaContextMenuItem_Click(object sender, EventArgs e)
-        {
-            await this.doSearchToolStrip(Properties.Resources.SearchItem1Url);
-        }
-
-        private async void SearchGoogleContextMenuItem_Click(object sender, EventArgs e)
-        {
-            await this.doSearchToolStrip(Properties.Resources.SearchItem2Url);
-        }
-
-        private async void SearchPublicSearchContextMenuItem_Click(object sender, EventArgs e)
-        {
-            await this.doSearchToolStrip(Properties.Resources.SearchItem4Url);
-        }
-
-        private void UrlCopyContextMenuItem_Click(object sender, EventArgs e)
-        {
-            try
-            {
-                foreach (var link in this.PostBrowser.Document.Links.Cast<HtmlElement>())
-                {
-                    if (link.GetAttribute("href") == this._postBrowserStatusText)
-                    {
-                        var linkStr = link.GetAttribute("title");
-                        if (string.IsNullOrEmpty(linkStr))
-                            linkStr = link.GetAttribute("href");
-
-                        Clipboard.SetDataObject(linkStr, false, 5, 100);
-                        return;
-                    }
-                }
-
-                Clipboard.SetDataObject(this._postBrowserStatusText, false, 5, 100);
-            }
-            catch (Exception ex)
-            {
-                MessageBox.Show(ex.Message);
-            }
-        }
-
-        private void ContextMenuPostBrowser_Opening(object ender, CancelEventArgs e)
-        {
-            // URLコピーの項目の表示/非表示
-            if (PostBrowser.StatusText.StartsWith("http", StringComparison.Ordinal))
-            {
-                this._postBrowserStatusText = PostBrowser.StatusText;
-                string name = GetUserId();
-                UrlCopyContextMenuItem.Enabled = true;
-                if (name != null)
-                {
-                    FollowContextMenuItem.Enabled = true;
-                    RemoveContextMenuItem.Enabled = true;
-                    FriendshipContextMenuItem.Enabled = true;
-                    ShowUserStatusContextMenuItem.Enabled = true;
-                    SearchPostsDetailToolStripMenuItem.Enabled = true;
-                    IdFilterAddMenuItem.Enabled = true;
-                    ListManageUserContextToolStripMenuItem.Enabled = true;
-                    SearchAtPostsDetailToolStripMenuItem.Enabled = true;
-                }
-                else
-                {
-                    FollowContextMenuItem.Enabled = false;
-                    RemoveContextMenuItem.Enabled = false;
-                    FriendshipContextMenuItem.Enabled = false;
-                    ShowUserStatusContextMenuItem.Enabled = false;
-                    SearchPostsDetailToolStripMenuItem.Enabled = false;
-                    IdFilterAddMenuItem.Enabled = false;
-                    ListManageUserContextToolStripMenuItem.Enabled = false;
-                    SearchAtPostsDetailToolStripMenuItem.Enabled = false;
-                }
-
-                if (Regex.IsMatch(this._postBrowserStatusText, @"^https?://twitter.com/search\?q=%23"))
-                    UseHashtagMenuItem.Enabled = true;
-                else
-                    UseHashtagMenuItem.Enabled = false;
-            }
-            else
-            {
-                this._postBrowserStatusText = "";
-                UrlCopyContextMenuItem.Enabled = false;
-                FollowContextMenuItem.Enabled = false;
-                RemoveContextMenuItem.Enabled = false;
-                FriendshipContextMenuItem.Enabled = false;
-                ShowUserStatusContextMenuItem.Enabled = false;
-                SearchPostsDetailToolStripMenuItem.Enabled = false;
-                SearchAtPostsDetailToolStripMenuItem.Enabled = false;
-                UseHashtagMenuItem.Enabled = false;
-                IdFilterAddMenuItem.Enabled = false;
-                ListManageUserContextToolStripMenuItem.Enabled = false;
-            }
-            // 文字列選択されていないときは選択文字列関係の項目を非表示に
-            string _selText = this.PostBrowser.GetSelectedText();
-            if (_selText == null)
-            {
-                SelectionSearchContextMenuItem.Enabled = false;
-                SelectionCopyContextMenuItem.Enabled = false;
-                SelectionTranslationToolStripMenuItem.Enabled = false;
-            }
-            else
-            {
-                SelectionSearchContextMenuItem.Enabled = true;
-                SelectionCopyContextMenuItem.Enabled = true;
-                SelectionTranslationToolStripMenuItem.Enabled = true;
-            }
-            //発言内に自分以外のユーザーが含まれてればフォロー状態全表示を有効に
-            MatchCollection ma = Regex.Matches(this.PostBrowser.DocumentText, @"href=""https?://twitter.com/(#!/)?(?<ScreenName>[a-zA-Z0-9_]+)(/status(es)?/[0-9]+)?""");
-            bool fAllFlag = false;
-            foreach (Match mu in ma)
-            {
-                if (mu.Result("${ScreenName}").ToLowerInvariant() != tw.Username.ToLowerInvariant())
-                {
-                    fAllFlag = true;
-                    break;
-                }
-            }
-            this.FriendshipAllMenuItem.Enabled = fAllFlag;
-
-            if (_curPost == null)
-                TranslationToolStripMenuItem.Enabled = false;
-            else
-                TranslationToolStripMenuItem.Enabled = true;
-
-            e.Cancel = false;
-        }
-
-        private void CurrentTabToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            //発言詳細の選択文字列で現在のタブを検索
-            string _selText = this.PostBrowser.GetSelectedText();
-
-            if (_selText != null)
-            {
-                var searchOptions = new SearchWordDialog.SearchOptions(
-                    SearchWordDialog.SearchType.Timeline,
-                    _selText,
-                    newTab: false,
-                    caseSensitive: false,
-                    useRegex: false);
-
-                this.SearchDialog.ResultOptions = searchOptions;
-
-                this.DoTabSearch(
-                    searchOptions.Query,
-                    searchOptions.CaseSensitive,
-                    searchOptions.UseRegex,
-                    SEARCHTYPE.NextSearch);
-            }
-        }
-
         private void SplitContainer2_SplitterMoved(object sender, SplitterEventArgs e)
         {
             if (StatusText.Multiline) _mySpDis2 = StatusText.Height;
@@ -10919,6 +9877,7 @@ namespace OpenTween
 
             _curTab = _tab;
             _curList = (DetailsListView)_tab.Tag;
+
             if (_curList.SelectedIndices.Count > 0)
             {
                 _curItemIndex = _curList.SelectedIndices[0];
@@ -11028,18 +9987,6 @@ namespace OpenTween
 
         private async void TweenMain_Shown(object sender, EventArgs e)
         {
-            try
-            {
-                using (ControlTransaction.Update(this.PostBrowser))
-                {
-                    PostBrowser.Url = new Uri("about:blank");
-                    PostBrowser.DocumentText = "";       //発言詳細部初期化
-                }
-            }
-            catch (Exception)
-            {
-            }
-
             NotifyIcon1.Visible = true;
 
             if (this.IsNetworkAvailable())
@@ -11146,9 +10093,11 @@ namespace OpenTween
             //公式RT
             if (this.ExistCurrentPost)
             {
-                if (_curPost.IsProtect)
+                if (!_curPost.CanRetweetBy(this.twitterApi.CurrentUserId))
                 {
-                    MessageBox.Show("Protected.");
+                    if (this._curPost.IsProtect)
+                        MessageBox.Show("Protected.");
+
                     _DoFavRetweetFlags = false;
                     return;
                 }
@@ -11172,11 +10121,6 @@ namespace OpenTween
                 }
                 else
                 {
-                    if (_curPost.IsDm || _curPost.IsMe)
-                    {
-                        _DoFavRetweetFlags = false;
-                        return;
-                    }
                     if (!this._cfgCommon.RetweetNoConfirm)
                     {
                         string Questiontext = Properties.Resources.RetweetQuestion1;
@@ -11193,7 +10137,7 @@ namespace OpenTween
                 foreach (int idx in _curList.SelectedIndices)
                 {
                     PostClass post = GetCurTabPost(idx);
-                    if (!post.IsMe && !post.IsProtect && !post.IsDm)
+                    if (post.CanRetweetBy(this.twitterApi.CurrentUserId))
                         statusIds.Add(post.StatusId);
                 }
 
@@ -11272,6 +10216,8 @@ namespace OpenTween
 
         private async void DumpPostClassToolStripMenuItem_Click(object sender, EventArgs e)
         {
+            this.tweetDetailsView.DumpPostClass = this.DumpPostClassToolStripMenuItem.Checked;
+
             if (_curPost != null)
                 await this.DispSelectedPost(true);
         }
@@ -11311,7 +10257,9 @@ namespace OpenTween
         private void TabRenameMenuItem_Click(object sender, EventArgs e)
         {
             if (string.IsNullOrEmpty(_rclickTabName)) return;
-            TabRename(ref _rclickTabName);
+
+            string _;
+            TabRename(_rclickTabName, out _);
         }
 
         private async void BitlyToolStripMenuItem_Click(object sender, EventArgs e)
@@ -11334,7 +10282,7 @@ namespace OpenTween
 
                 try
                 {
-                    var task = Task.Run(() => this.tw.GetInfoApi());
+                    var task = this.tw.GetInfoApi();
                     apiStatus = await dialog.WaitForAsync(this, task);
                 }
                 catch (WebApiException)
@@ -11365,7 +10313,7 @@ namespace OpenTween
             await this.FollowCommand(id);
         }
 
-        private async Task FollowCommand(string id)
+        internal async Task FollowCommand(string id)
         {
             using (var inputName = new InputTabName())
             {
@@ -11405,7 +10353,7 @@ namespace OpenTween
             await this.RemoveCommand(id, false);
         }
 
-        private async Task RemoveCommand(string id, bool skipInput)
+        internal async Task RemoveCommand(string id, bool skipInput)
         {
             if (!skipInput)
             {
@@ -11448,7 +10396,7 @@ namespace OpenTween
             await this.ShowFriendship(id);
         }
 
-        private async Task ShowFriendship(string id)
+        internal async Task ShowFriendship(string id)
         {
             using (var inputName = new InputTabName())
             {
@@ -11510,7 +10458,7 @@ namespace OpenTween
             MessageBox.Show(result);
         }
 
-        private async Task ShowFriendship(string[] ids)
+        internal async Task ShowFriendship(string[] ids)
         {
             foreach (string id in ids)
             {
@@ -11605,70 +10553,6 @@ namespace OpenTween
                 return !this.tw.Configuration.NonUsernamePaths.Contains(name.ToLowerInvariant());
         }
 
-        private string GetUserId()
-        {
-            Match m = Regex.Match(this._postBrowserStatusText, @"^https?://twitter.com/(#!/)?(?<ScreenName>[a-zA-Z0-9_]+)(/status(es)?/[0-9]+)?$");
-            if (m.Success && IsTwitterId(m.Result("${ScreenName}")))
-                return m.Result("${ScreenName}");
-            else
-                return null;
-        }
-
-        private async void FollowContextMenuItem_Click(object sender, EventArgs e)
-        {
-            string name = GetUserId();
-            if (name != null)
-                await this.FollowCommand(name);
-        }
-
-        private async void RemoveContextMenuItem_Click(object sender, EventArgs e)
-        {
-            string name = GetUserId();
-            if (name != null)
-                await this.RemoveCommand(name, false);
-        }
-
-        private async void FriendshipContextMenuItem_Click(object sender, EventArgs e)
-        {
-            string name = GetUserId();
-            if (name != null)
-                await this.ShowFriendship(name);
-        }
-
-        private async void FriendshipAllMenuItem_Click(object sender, EventArgs e)
-        {
-            MatchCollection ma = Regex.Matches(this.PostBrowser.DocumentText, @"href=""https?://twitter.com/(#!/)?(?<ScreenName>[a-zA-Z0-9_]+)(/status(es)?/[0-9]+)?""");
-            List<string> ids = new List<string>();
-            foreach (Match mu in ma)
-            {
-                if (mu.Result("${ScreenName}").ToLower() != tw.Username.ToLower())
-                {
-                    ids.Add(mu.Result("${ScreenName}"));
-                }
-            }
-
-            await this.ShowFriendship(ids.ToArray());
-        }
-
-        private async void ShowUserStatusContextMenuItem_Click(object sender, EventArgs e)
-        {
-            string name = GetUserId();
-            if (name != null)
-                await this.ShowUserStatus(name);
-        }
-
-        private void SearchPostsDetailToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            string name = GetUserId();
-            if (name != null) AddNewTabForUserTimeline(name);
-        }
-
-        private void SearchAtPostsDetailToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            string name = GetUserId();
-            if (name != null) AddNewTabForSearch("@" + name);
-        }
-
         private void IdeographicSpaceToSpaceToolStripMenuItem_Click(object sender, EventArgs e)
         {
             ModifySettingCommon = true;
@@ -11740,7 +10624,7 @@ namespace OpenTween
             Control pnl = ((Control)sender).Parent;
             if (pnl == null) return;
             string tbName = pnl.Parent.Text;
-            TabClass tb = _statuses.Tabs[tbName];
+            var tb = (PublicSearchTabModel)_statuses.Tabs[tbName];
             ComboBox cmb = (ComboBox)pnl.Controls["comboSearch"];
             ComboBox cmbLang = (ComboBox)pnl.Controls["comboLang"];
             cmb.Text = cmb.Text.Trim();
@@ -11774,6 +10658,8 @@ namespace OpenTween
 
             var listView = (DetailsListView)pnl.Parent.Tag;
 
+            var queryChanged = tb.SearchWords != cmb.Text || tb.SearchLang != cmbLang.Text;
+
             tb.SearchWords = cmb.Text;
             tb.SearchLang = cmbLang.Text;
             if (string.IsNullOrEmpty(cmb.Text))
@@ -11782,7 +10668,7 @@ namespace OpenTween
                 SaveConfigsTabs();
                 return;
             }
-            if (tb.IsSearchQueryChanged)
+            if (queryChanged)
             {
                 int idx = cmb.Items.IndexOf(tb.SearchWords);
                 if (idx > -1) cmb.Items.RemoveAt(idx);
@@ -11836,7 +10722,7 @@ namespace OpenTween
             {
                 DetailsListView listView = null;
 
-                TabClass tb = _statuses.RemovedTab.Pop();
+                TabModel tb = _statuses.RemovedTab.Pop();
                 if (tb.TabType == MyCommon.TabUsageType.Related)
                 {
                     var relatedTab = _statuses.GetTabByType(MyCommon.TabUsageType.Related);
@@ -11865,11 +10751,12 @@ namespace OpenTween
                         for (int i = 2; i <= 100; i++)
                         {
                             if (!_statuses.ContainsTab(renamed)) break;
-                            renamed = TabName + i.ToString();
+                            renamed = TabName + i;
                         }
                         tb.TabName = renamed;
-                        AddNewTab(renamed, false, tb.TabType, tb.ListInfo);
-                        _statuses.Tabs.Add(renamed, tb);  // 後に
+
+                        _statuses.AddTab(tb);
+                        AddNewTab(tb, startup: false);
 
                         var tabPage = ListTab.TabPages[ListTab.TabPages.Count - 1];
                         listView = (DetailsListView)tabPage.Tag;
@@ -11882,11 +10769,12 @@ namespace OpenTween
                     for (int i = 1; i < int.MaxValue; i++)
                     {
                         if (!_statuses.ContainsTab(renamed)) break;
-                        renamed = tb.TabName + "(" + i.ToString() + ")";
+                        renamed = tb.TabName + "(" + i + ")";
                     }
                     tb.TabName = renamed;
-                    _statuses.Tabs.Add(renamed, tb);  // 先に
-                    AddNewTab(renamed, false, tb.TabType, tb.ListInfo);
+
+                    _statuses.AddTab(tb);
+                    AddNewTab(tb, startup: false);
 
                     var tabPage = ListTab.TabPages[ListTab.TabPages.Count - 1];
                     listView = (DetailsListView)tabPage.Tag;
@@ -11921,82 +10809,16 @@ namespace OpenTween
             await this.doMoveToRTHome();
         }
 
-        private void IdFilterAddMenuItem_Click(object sender, EventArgs e)
+        private void ListManageUserContextToolStripMenuItem_Click(object sender, EventArgs e)
         {
-            string name = GetUserId();
-            if (name != null)
-            {
-                string tabName;
-
-                //未選択なら処理終了
-                if (_curList.SelectedIndices.Count == 0) return;
-
-                //タブ選択(or追加)
-                if (!SelectTab(out tabName)) return;
-
-                var tab = this._statuses.Tabs[tabName];
-
-                bool mv;
-                bool mk;
-                if (tab.TabType != MyCommon.TabUsageType.Mute)
-                {
-                    this.MoveOrCopy(out mv, out mk);
-                }
-                else
-                {
-                    // ミュートタブでは常に MoveMatches を true にする
-                    mv = true;
-                    mk = false;
-                }
-
-                PostFilterRule fc = new PostFilterRule();
-                fc.FilterName = name;
-                fc.UseNameField = true;
-                fc.MoveMatches = mv;
-                fc.MarkMatches = mk;
-                fc.UseRegex = false;
-                fc.FilterByUrl = false;
-                tab.AddFilter(fc);
-
-                this.ApplyPostFilters();
-                SaveConfigsTabs();
-            }
+            var screenName = this._curPost?.ScreenName;
+            if (screenName != null)
+                this.ListManageUserContext(screenName);
         }
 
-        private void ListManageUserContextToolStripMenuItem_Click(object sender, EventArgs e)
+        public void ListManageUserContext(string screenName)
         {
-            string user;
-
-            ToolStripMenuItem menuItem = (ToolStripMenuItem)sender;
-
-            if (menuItem.Owner == this.ContextMenuPostBrowser)
-            {
-                user = GetUserId();
-                if (user == null) return;
-            }
-            else if (this._curPost != null)
-            {
-                user = this._curPost.ScreenName;
-            }
-            else
-            {
-                return;
-            }
-
-            if (TabInformations.GetInstance().SubscribableLists.Count == 0)
-            {
-                try
-                {
-                    this.tw.GetListsApi();
-                }
-                catch (WebApiException ex)
-                {
-                    MessageBox.Show("Failed to get lists. (" + ex.Message + ")");
-                    return;
-                }
-            }
-
-            using (MyLists listSelectForm = new MyLists(user, this.tw))
+            using (var listSelectForm = new MyLists(screenName, this.twitterApi))
             {
                 listSelectForm.ShowDialog(this);
             }
@@ -12029,20 +10851,6 @@ namespace OpenTween
             }
         }
 
-        private void UseHashtagMenuItem_Click(object sender, EventArgs e)
-        {
-            Match m = Regex.Match(this._postBrowserStatusText, @"^https?://twitter.com/search\?q=%23(?<hash>.+)$");
-            if (m.Success)
-            {
-                HashMgr.SetPermanentHash("#" + Uri.UnescapeDataString(m.Result("${hash}")));
-                HashStripSplitButton.Text = HashMgr.UseHash;
-                HashToggleMenuItem.Checked = true;
-                HashToggleToolStripMenuItem.Checked = true;
-                //使用ハッシュタグとして設定
-                ModifySettingCommon = true;
-            }
-        }
-
         private void StatusLabel_DoubleClick(object sender, EventArgs e)
         {
             MessageBox.Show(StatusLabel.TextHistory, "Logs", MessageBoxButtons.OK, MessageBoxIcon.None);
@@ -12115,6 +10923,16 @@ namespace OpenTween
             HashToggleMenuItem_Click(null, null);
         }
 
+        public void SetPermanentHashtag(string hashtag)
+        {
+            HashMgr.SetPermanentHash("#" + hashtag);
+            HashStripSplitButton.Text = HashMgr.UseHash;
+            HashToggleMenuItem.Checked = true;
+            HashToggleToolStripMenuItem.Checked = true;
+            //使用ハッシュタグとして設定
+            ModifySettingCommon = true;
+        }
+
         private void MenuItemOperate_DropDownOpening(object sender, EventArgs e)
         {
             if (ListTab.SelectedTab == null) return;
@@ -12171,32 +10989,21 @@ namespace OpenTween
                 this.OpenFavotterOpMenuItem.Enabled = true;
                 this.ShowRelatedStatusesMenuItem2.Enabled = true;  //PublicSearchの時問題出るかも
 
-                if (_curPost.IsMe)
+                if (!_curPost.CanRetweetBy(this.twitterApi.CurrentUserId))
                 {
-                    this.RtOpMenuItem.Enabled = false;  //公式RTは無効に
-                    this.RtUnOpMenuItem.Enabled = true;
-                    this.QtOpMenuItem.Enabled = true;
-                    this.FavoriteRetweetMenuItem.Enabled = false;  //公式RTは無効に
-                    this.FavoriteRetweetUnofficialMenuItem.Enabled = true;
+                    this.RtOpMenuItem.Enabled = false;
+                    this.RtUnOpMenuItem.Enabled = false;
+                    this.QtOpMenuItem.Enabled = false;
+                    this.FavoriteRetweetMenuItem.Enabled = false;
+                    this.FavoriteRetweetUnofficialMenuItem.Enabled = false;
                 }
                 else
                 {
-                    if (_curPost.IsProtect)
-                    {
-                        this.RtOpMenuItem.Enabled = false;
-                        this.RtUnOpMenuItem.Enabled = false;
-                        this.QtOpMenuItem.Enabled = false;
-                        this.FavoriteRetweetMenuItem.Enabled = false;
-                        this.FavoriteRetweetUnofficialMenuItem.Enabled = false;
-                    }
-                    else
-                    {
-                        this.RtOpMenuItem.Enabled = true;
-                        this.RtUnOpMenuItem.Enabled = true;
-                        this.QtOpMenuItem.Enabled = true;
-                        this.FavoriteRetweetMenuItem.Enabled = true;
-                        this.FavoriteRetweetUnofficialMenuItem.Enabled = true;
-                    }
+                    this.RtOpMenuItem.Enabled = true;
+                    this.RtUnOpMenuItem.Enabled = true;
+                    this.QtOpMenuItem.Enabled = true;
+                    this.FavoriteRetweetMenuItem.Enabled = true;
+                    this.FavoriteRetweetUnofficialMenuItem.Enabled = true;
                 }
             }
 
@@ -12375,79 +11182,16 @@ namespace OpenTween
             }
         }
 
-        private Task ShowUserStatus(string id, bool ShowInputDialog)
+        internal Task ShowUserStatus(string id, bool ShowInputDialog)
         {
             return this.doShowUserStatus(id, ShowInputDialog);
         }
 
-        private Task ShowUserStatus(string id)
+        internal Task ShowUserStatus(string id)
         {
             return this.doShowUserStatus(id, true);
         }
 
-        private async void FollowToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (NameLabel.Tag != null)
-            {
-                string id = (string)NameLabel.Tag;
-                if (id != tw.Username)
-                {
-                    await this.FollowCommand(id);
-                }
-            }
-        }
-
-        private async void UnFollowToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (NameLabel.Tag != null)
-            {
-                string id = (string)NameLabel.Tag;
-                if (id != tw.Username)
-                {
-                    await this.RemoveCommand(id, false);
-                }
-            }
-        }
-
-        private async void ShowFriendShipToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (NameLabel.Tag != null)
-            {
-                string id = (string)NameLabel.Tag;
-                if (id != tw.Username)
-                {
-                    await this.ShowFriendship(id);
-                }
-            }
-        }
-
-        private async void ShowUserStatusToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (NameLabel.Tag != null)
-            {
-                string id = (string)NameLabel.Tag;
-                await this.ShowUserStatus(id, false);
-            }
-        }
-
-        private void SearchPostsDetailNameToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (NameLabel.Tag != null)
-            {
-                string id = (string)NameLabel.Tag;
-                AddNewTabForUserTimeline(id);
-            }
-        }
-
-        private void SearchAtPostsDetailNameToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (NameLabel.Tag != null)
-            {
-                string id = (string)NameLabel.Tag;
-                AddNewTabForSearch("@" + id);
-            }
-        }
-
         private async void ShowProfileMenuItem_Click(object sender, EventArgs e)
         {
             if (_curPost != null)
@@ -12503,6 +11247,8 @@ namespace OpenTween
                 this.StatusText.Dock = DockStyle.Fill;
             }
 
+            this.tweetDetailsView.Owner = this;
+
             this.TimerTimeline.Elapsed += this.TimerTimeline_Elapsed;
             this._hookGlobalHotkey.HotkeyPressed += _hookGlobalHotkey_HotkeyPressed;
             this.gh.NotifyClicked += GrowlHelper_Callback;
@@ -12514,6 +11260,8 @@ namespace OpenTween
             this.ImageSelector.Enabled = false;
             this.ImageSelector.FilePickDialog = OpenFileDialog1;
 
+            this.workerProgress = new Progress<string>(x => this.StatusLabel.Text = x);
+
             this.ReplaceAppName();
             this.InitializeShortcuts();
         }
@@ -12535,24 +11283,6 @@ namespace OpenTween
             }
         }
 
-        private void UserPicture_MouseEnter(object sender, EventArgs e)
-        {
-            this.UserPicture.Cursor = Cursors.Hand;
-        }
-
-        private void UserPicture_MouseLeave(object sender, EventArgs e)
-        {
-            this.UserPicture.Cursor = Cursors.Default;
-        }
-
-        private async void UserPicture_DoubleClick(object sender, EventArgs e)
-        {
-            if (NameLabel.Tag != null)
-            {
-                await this.OpenUriInBrowserAsync(MyCommon.TwitterUrl + NameLabel.Tag.ToString());
-            }
-        }
-
         private void SplitContainer2_MouseDoubleClick(object sender, MouseEventArgs e)
         {
             this.MultiLineMenuItem.PerformClick();
@@ -12620,8 +11350,7 @@ namespace OpenTween
                 ModifySettingCommon = true;
                 SaveConfigsAll(true);
 
-                if (ImageSelector.ServiceName.Equals("Twitter"))
-                    this.StatusText_TextChanged(null, null);
+                this.StatusText_TextChanged(null, null);
             }
         }
 
@@ -12635,28 +11364,35 @@ namespace OpenTween
         /// </summary>
         private void ProcClipboardFromStatusTextWhenCtrlPlusV()
         {
-            if (Clipboard.ContainsText())
-            {
-                // clipboardにテキストがある場合は貼り付け処理
-                this.StatusText.Paste(Clipboard.GetText());
-            }
-            else if (Clipboard.ContainsImage())
+            try
             {
-                // 画像があるので投稿処理を行う
-                if (MessageBox.Show(Properties.Resources.PostPictureConfirm3,
-                                   Properties.Resources.PostPictureWarn4,
-                                   MessageBoxButtons.OKCancel,
-                                   MessageBoxIcon.Question,
-                                   MessageBoxDefaultButton.Button2)
-                               == DialogResult.OK)
+                if (Clipboard.ContainsText())
+                {
+                    // clipboardにテキストがある場合は貼り付け処理
+                    this.StatusText.Paste(Clipboard.GetText());
+                }
+                else if (Clipboard.ContainsImage())
                 {
-                    // clipboardから画像を取得
-                    using (var image = Clipboard.GetImage())
+                    // 画像があるので投稿処理を行う
+                    if (MessageBox.Show(Properties.Resources.PostPictureConfirm3,
+                                       Properties.Resources.PostPictureWarn4,
+                                       MessageBoxButtons.OKCancel,
+                                       MessageBoxIcon.Question,
+                                       MessageBoxDefaultButton.Button2)
+                                   == DialogResult.OK)
                     {
-                        this.ImageSelector.BeginSelection(image);
+                        // clipboardから画像を取得
+                        using (var image = Clipboard.GetImage())
+                        {
+                            this.ImageSelector.BeginSelection(image);
+                        }
                     }
                 }
             }
+            catch (ExternalException ex)
+            {
+                MessageBox.Show(ex.Message);
+            }
         }
 #endregion
 
@@ -12672,29 +11408,6 @@ namespace OpenTween
         public bool ModifySettingLocal { get; set; }
         public bool ModifySettingAtId { get; set; }
 
-        private async void SourceLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
-        {
-            var sourceUri = (Uri)this.SourceLinkLabel.Tag;
-            if (sourceUri != null && e.Button == MouseButtons.Left)
-            {
-                await this.OpenUriInBrowserAsync(sourceUri.AbsoluteUri);
-            }
-        }
-
-        private void SourceLinkLabel_MouseEnter(object sender, EventArgs e)
-        {
-            var sourceUri = (Uri)this.SourceLinkLabel.Tag;
-            if (sourceUri != null)
-            {
-                StatusLabelUrl.Text = MyCommon.ConvertToReadableUrl(sourceUri.AbsoluteUri);
-            }
-        }
-
-        private void SourceLinkLabel_MouseLeave(object sender, EventArgs e)
-        {
-            SetStatusLabelUrl();
-        }
-
         private void MenuItemCommand_DropDownOpening(object sender, EventArgs e)
         {
             if (this.ExistCurrentPost && !_curPost.IsDm)
@@ -12773,31 +11486,25 @@ namespace OpenTween
         /// <exception cref="TabException">名前の重複が多すぎてタブを作成できない場合</exception>
         private async Task OpenRelatedTab(PostClass post)
         {
-            var tabRelated = this._statuses.GetTabByType(MyCommon.TabUsageType.Related);
-            string tabName;
-
-            if (tabRelated == null)
+            var tabRelated = this._statuses.GetTabByType<RelatedPostsTabModel>();
+            if (tabRelated != null)
             {
-                tabName = this._statuses.MakeTabName("Related Tweets");
+                this.RemoveSpecifiedTab(tabRelated.TabName, confirm: false);
+            }
 
-                this.AddNewTab(tabName, false, MyCommon.TabUsageType.Related);
-                this._statuses.AddTab(tabName, MyCommon.TabUsageType.Related, null);
+            var tabName = this._statuses.MakeTabName("Related Tweets");
 
-                tabRelated = this._statuses.GetTabByType(MyCommon.TabUsageType.Related);
-                tabRelated.UnreadManage = false;
-                tabRelated.Notify = false;
-            }
-            else
-            {
-                tabName = tabRelated.TabName;
-            }
+            tabRelated = new RelatedPostsTabModel(tabName, post);
+            tabRelated.UnreadManage = false;
+            tabRelated.Notify = false;
 
-            tabRelated.RelationTargetPost = post;
-            this.ClearTab(tabName, false);
+            this._statuses.AddTab(tabRelated);
+            this.AddNewTab(tabRelated, startup: false);
 
+            TabPage tabPage;
             for (int i = 0; i < this.ListTab.TabPages.Count; i++)
             {
-                var tabPage = this.ListTab.TabPages[i];
+                tabPage = this.ListTab.TabPages[i];
                 if (tabName == tabPage.Text)
                 {
                     this.ListTab.SelectedIndex = i;
@@ -12806,6 +11513,24 @@ namespace OpenTween
             }
 
             await this.GetRelatedTweetsAsync(tabRelated);
+
+            tabPage = this.ListTab.TabPages.Cast<TabPage>()
+                .FirstOrDefault(x => x.Text == tabRelated.TabName);
+
+            if (tabPage != null)
+            {
+                // TODO: 非同期更新中にタブが閉じられている場合を厳密に考慮したい
+
+                var listView = (DetailsListView)tabPage.Tag;
+                var targetPost = tabRelated.TargetPost;
+                var index = tabRelated.IndexOf(targetPost.RetweetedId ?? targetPost.StatusId);
+
+                if (index != -1 && index < listView.Items.Count)
+                {
+                    listView.SelectedIndices.Add(index);
+                    listView.Items[index].Focused = true;
+                }
+            }
         }
 
         private void CacheInfoMenuItem_Click(object sender, EventArgs e)
@@ -12824,23 +11549,23 @@ namespace OpenTween
         }
 
 #region "Userstream"
-        private void tw_PostDeleted(object sender, PostDeletedEventArgs e)
+        private async void tw_PostDeleted(object sender, PostDeletedEventArgs e)
         {
             try
             {
                 if (InvokeRequired && !IsDisposed)
                 {
-                    Invoke((Action) (async () =>
-                           {
-                               _statuses.RemovePostReserve(e.StatusId);
-                               if (_curTab != null && _statuses.Tabs[_curTab.Text].Contains(e.StatusId))
-                               {
-                                   this.PurgeListViewItemCache();
-                                   ((DetailsListView)_curTab.Tag).Update();
-                                   if (_curPost != null && _curPost.StatusId == e.StatusId)
-                                       await this.DispSelectedPost(true);
-                               }
-                           }));
+                    await this.InvokeAsync(async () =>
+                    {
+                        this._statuses.RemovePostFromAllTabs(e.StatusId, setIsDeleted: true);
+                        if (_curTab != null && _statuses.Tabs[_curTab.Text].Contains(e.StatusId))
+                        {
+                            this.PurgeListViewItemCache();
+                            ((DetailsListView)_curTab.Tag).Update();
+                            if (_curPost != null && _curPost.StatusId == e.StatusId)
+                                await this.DispSelectedPost(true);
+                        }
+                    });
                     return;
                 }
             }
@@ -12863,9 +11588,7 @@ namespace OpenTween
                 _statuses.SetReadHomeTab(); //新着時未読クリア
             }
 
-            int rsltAddCount = _statuses.DistributePosts();
-
-            this.UpdateTimelineSpeed(rsltAddCount);
+            this._statuses.DistributePosts();
 
             if (this._cfgCommon.UserstreamPeriod > 0) return;
 
@@ -12884,13 +11607,13 @@ namespace OpenTween
             }
         }
 
-        private void tw_UserStreamStarted(object sender, EventArgs e)
+        private async void tw_UserStreamStarted(object sender, EventArgs e)
         {
             try
             {
                 if (InvokeRequired && !IsDisposed)
                 {
-                    Invoke((Action)(() => this.tw_UserStreamStarted(sender, e)));
+                    await this.InvokeAsync(() => this.tw_UserStreamStarted(sender, e));
                     return;
                 }
             }
@@ -12909,13 +11632,13 @@ namespace OpenTween
             StatusLabel.Text = "UserStream Started.";
         }
 
-        private void tw_UserStreamStopped(object sender, EventArgs e)
+        private async void tw_UserStreamStopped(object sender, EventArgs e)
         {
             try
             {
                 if (InvokeRequired && !IsDisposed)
                 {
-                    Invoke((Action)(() => this.tw_UserStreamStopped(sender, e)));
+                    await this.InvokeAsync(() => this.tw_UserStreamStopped(sender, e));
                     return;
                 }
             }
@@ -12948,13 +11671,13 @@ namespace OpenTween
             }
         }
 
-        private void tw_UserStreamEventArrived(object sender, UserStreamEventReceivedEventArgs e)
+        private async void tw_UserStreamEventArrived(object sender, UserStreamEventReceivedEventArgs e)
         {
             try
             {
                 if (InvokeRequired && !IsDisposed)
                 {
-                    Invoke((Action)(() => this.tw_UserStreamEventArrived(sender, e)));
+                    await this.InvokeAsync(() => this.tw_UserStreamEventArrived(sender, e));
                     return;
                 }
             }
@@ -12982,7 +11705,8 @@ namespace OpenTween
                 }
                 if (ev.Event == "unfavorite" && ev.Username.ToLowerInvariant().Equals(tw.Username.ToLowerInvariant()))
                 {
-                    RemovePostFromFavTab(new long[] {ev.Id});
+                    var favTab = this._statuses.GetTabByType(MyCommon.TabUsageType.Favorites);
+                    favTab.EnqueueRemovePost(ev.Id, setIsDeleted: false);
                 }
             }
         }
@@ -13011,7 +11735,7 @@ namespace OpenTween
                 title.Append("] by ");
                 if (!string.IsNullOrEmpty(ev.Username))
                 {
-                    title.Append(ev.Username.ToString());
+                    title.Append(ev.Username);
                 }
                 else
                 {
@@ -13178,44 +11902,6 @@ namespace OpenTween
             await this.OpenUriInBrowserAsync(MyCommon.TwitterUrl + tw.Username);
         }
 
-        private async Task doTranslation(string str)
-        {
-            if (string.IsNullOrEmpty(str))
-                return;
-
-            var bing = new Bing();
-            try
-            {
-                var translatedText = await bing.TranslateAsync(str,
-                    langFrom: null,
-                    langTo: this._cfgCommon.TranslateLanguage);
-
-                this.PostBrowser.DocumentText = this.createDetailHtml(translatedText);
-            }
-            catch (HttpRequestException e)
-            {
-                this.StatusLabel.Text = "Err:" + e.Message;
-            }
-            catch (OperationCanceledException)
-            {
-                this.StatusLabel.Text = "Err:Timeout";
-            }
-        }
-
-        private async void TranslationToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            if (!this.ExistCurrentPost)
-                return;
-
-            await this.doTranslation(this._curPost.TextFromApi);
-        }
-
-        private async void SelectionTranslationToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            var text = this.PostBrowser.GetSelectedText();
-            await this.doTranslation(text);
-        }
-
         private bool ExistCurrentPost
         {
             get
@@ -13323,51 +12009,11 @@ namespace OpenTween
             await this.OpenUserAppointUrl();
         }
 
-        private void SourceCopyMenuItem_Click(object sender, EventArgs e)
-        {
-            string selText = SourceLinkLabel.Text;
-            try
-            {
-                Clipboard.SetDataObject(selText, false, 5, 100);
-            }
-            catch (Exception ex)
-            {
-                MessageBox.Show(ex.Message);
-            }
-        }
-
-        private void SourceUrlCopyMenuItem_Click(object sender, EventArgs e)
-        {
-            var sourceUri = (Uri)this.SourceLinkLabel.Tag;
-            try
-            {
-                Clipboard.SetDataObject(sourceUri.AbsoluteUri, false, 5, 100);
-            }
-            catch (Exception ex)
-            {
-                MessageBox.Show(ex.Message);
-            }
-        }
-
-        private void ContextMenuSource_Opening(object sender, CancelEventArgs e)
-        {
-            if (_curPost == null || !ExistCurrentPost || _curPost.IsDm)
-            {
-                SourceCopyMenuItem.Enabled = false;
-                SourceUrlCopyMenuItem.Enabled = false;
-            }
-            else
-            {
-                SourceCopyMenuItem.Enabled = true;
-                SourceUrlCopyMenuItem.Enabled = true;
-            }
-        }
-
-        private void GrowlHelper_Callback(object sender, GrowlHelper.NotifyCallbackEventArgs e)
+        private async void GrowlHelper_Callback(object sender, GrowlHelper.NotifyCallbackEventArgs e)
         {
             if (Form.ActiveForm == null)
             {
-                this.BeginInvoke((Action) (() =>
+                await this.InvokeAsync(() =>
                 {
                     this.Visible = true;
                     if (this.WindowState == FormWindowState.Minimized) this.WindowState = FormWindowState.Normal;
@@ -13381,7 +12027,7 @@ namespace OpenTween
                     {
                         if (!this.GoStatus(e.StatusId)) this.StatusText.Focus();
                     }
-                }));
+                });
             }
         }
 
@@ -13495,5 +12141,17 @@ namespace OpenTween
 
             ModifySettingCommon = true;
         }
+
+        private void tweetDetailsView_StatusChanged(object sender, TweetDetailsViewStatusChengedEventArgs e)
+        {
+            if (!string.IsNullOrEmpty(e.StatusText))
+            {
+                this.StatusLabelUrl.Text = e.StatusText;
+            }
+            else
+            {
+                this.SetStatusLabelUrl();
+            }
+        }
     }
 }