WPF/FooEditEngine/AutoCompleteBox.cs

   1 using System;
   2 using System.Linq;
   3 using System.Collections.Generic;
   4 using System.Text;
   5 using System.Windows;
   6 using System.Windows.Controls;
   7 using System.Windows.Controls.Primitives;
   8 using System.Windows.Input;
   9 using FooEditEngine;
  10
  11 namespace FooEditEngine.WPF
  12 {
  13     /// <summary>
  14     /// 自動補完用クラス
  15     /// </summary>
  16     public class AutoCompleteBox : AutoCompleteBoxBase
  17     {
  18         private string inputedWord;
  19         private ListBox listBox1 = new ListBox();
  20         private Popup popup;
  21         private Document doc;
  22
  23         /// <summary>
  24         /// コンストラクター
  25         /// </summary>
  26         /// <param name="doc">ドキュメント</param>
  27         public AutoCompleteBox(Document doc) : base(doc)
  28         {
  29             //リストボックスを追加する
  30             this.listBox1.MouseDoubleClick += listBox1_MouseDoubleClick;
  31             this.listBox1.KeyDown += listBox1_KeyDown;
  32             this.listBox1.Height = 200;
  33             this.doc = doc;
  34         }
  35
  36         /// <summary>
  37         /// オートコンプリートの対象となる単語のリスト
  38         /// </summary>
  39         public override CompleteCollection<ICompleteItem> Items
  40         {
  41             get
  42             {
  43                 return (CompleteCollection<ICompleteItem>)this.listBox1.ItemsSource;
  44             }
  45             set
  46             {
  47                 this.listBox1.ItemsSource = value;
  48                 this.listBox1.DisplayMemberPath = CompleteCollection<ICompleteItem>.ShowMember;
  49             }
  50         }
  51
  52         /// <summary>
  53         /// 自動補完リストが表示されているかどうか
  54         /// </summary>
  55         protected override bool IsCloseCompleteBox
  56         {
  57             get
  58             {
  59                 return !this.popup.IsOpen;
  60             }
  61         }
  62
  63         internal Popup TargetPopup
  64         {
  65             get
  66             {
  67                 return this.popup;
  68             }
  69             set
  70             {
  71                 this.popup = value;
  72                 this.popup.Child = this.listBox1;
  73                 this.popup.Height = 200;
  74             }
  75         }
  76
  77         /// <summary>
  78         /// 補完候補の表示要求を処理する
  79         /// </summary>
  80         /// <param name="ev"></param>
  81         protected override void RequestShowCompleteBox(ShowingCompleteBoxEventArgs ev)
  82         {
  83             this.inputedWord = ev.inputedWord;
  84             this.listBox1.SelectedIndex = ev.foundIndex;
  85             this.listBox1.ScrollIntoView(this.listBox1.SelectedItem);
  86             this.popup.Placement = PlacementMode.Absolute;
  87             this.popup.PlacementRectangle = new Rect(ev.CaretPostion, new Size(listBox1.ActualWidth, listBox1.Height));
  88             this.popup.IsOpen = true;
  89         }
  90
  91         /// <summary>
  92         /// 補完候補の非表示要求を処理する
  93         /// </summary>
  94         protected override void RequestCloseCompleteBox()
  95         {
  96             this.popup.IsOpen = false;
  97         }
  98
  99         void DecideListBoxLocation(Document doc, ListBox listbox, Point p)
 100         {
 101         }
 102
 103         internal bool ProcessKeyDown(FooTextBox textbox, KeyEventArgs e,bool isCtrl,bool isShift)
 104         {
 105             if (this.popup.IsOpen == false)
 106             {
 107                 if (e.Key == Key.Space && isCtrl)
 108                 {
 109                     this.OpenCompleteBox(string.Empty);
 110                     e.Handled = true;
 111
 112                     return true;
 113                 }
 114                 return false;
 115             }
 116
 117             switch (e.Key)
 118             {
 119                 case Key.Escape:
 120                     this.RequestCloseCompleteBox();
 121                     textbox.Focus();
 122                     e.Handled = true;
 123                     return true;
 124                 case Key.Down:
 125                     if (this.listBox1.SelectedIndex + 1 >= this.listBox1.Items.Count)
 126                         this.listBox1.SelectedIndex = this.listBox1.Items.Count - 1;
 127                     else
 128                         this.listBox1.SelectedIndex++;
 129                     this.listBox1.ScrollIntoView(this.listBox1.SelectedItem);
 130                     e.Handled = true;
 131                     return true;
 132                 case Key.Up:
 133                     if (this.listBox1.SelectedIndex - 1 < 0)
 134                         this.listBox1.SelectedIndex = 0;
 135                     else
 136                         this.listBox1.SelectedIndex--;
 137                     this.listBox1.ScrollIntoView(this.listBox1.SelectedItem);
 138                     e.Handled = true;
 139                     return true;
 140                 case Key.Tab:
 141                 case Key.Enter:
 142                     this.RequestCloseCompleteBox();
 143                     CompleteWord selWord = (CompleteWord)this.listBox1.SelectedItem;
 144                     this.SelectItem(this, new SelectItemEventArgs(selWord, this.inputedWord, this.Document));
 145                     e.Handled = true;
 146                     return true;
 147             }
 148
 149             return false;
 150         }
 151
 152         private void listBox1_MouseDoubleClick(object sender, MouseButtonEventArgs e)
 153         {
 154             this.popup.IsOpen = false;
 155             CompleteWord selWord = (CompleteWord)this.listBox1.SelectedItem;
 156             this.SelectItem(this, new SelectItemEventArgs(selWord, this.inputedWord, this.Document));
 157         }
 158
 159         void listBox1_KeyDown(object sender, KeyEventArgs e)
 160         {
 161             if (e.Key == Key.Enter)
 162             {
 163                 this.popup.IsOpen = false;
 164                 CompleteWord selWord = (CompleteWord)this.listBox1.SelectedItem;
 165                 this.SelectItem(this, new SelectItemEventArgs(selWord, this.inputedWord, this.Document));
 166                 e.Handled = true;
 167             }
 168         }
 169     }
 170 }