Common/Controller.cs

   1 /*\r
   2  * Copyright (C) 2013 FooProject\r
   3  * * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by\r
   4  * the Free Software Foundation; either version 3 of the License, or (at your option) any later version.\r
   5 \r
   6  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of \r
   7  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.\r
   8 \r
   9 You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.\r
  10  */\r
  11 using System;\r
  12 using System.Globalization;\r
  13 using System.Text;\r
  14 using System.Linq;\r
  15 using System.Diagnostics;\r
  16 using System.Text.RegularExpressions;\r
  17 #if WINFORM\r
  18 using System.Drawing;\r
  19 #endif\r
  20 \r
  21 namespace FooEditEngine\r
  22 {\r
  23     internal enum MoveFlow\r
  24     {\r
  25         Horizontical,\r
  26         Vertical,\r
  27     }\r
  28     internal enum ScrollDirection\r
  29     {\r
  30         Up,\r
  31         Down,\r
  32         Left,\r
  33         Right,\r
  34     }\r
  35     /// <summary>\r
  36     /// ユーザー側からの処理を担当するクラス。一部を除き、こちらで行われた操作はアンドゥの対象になります\r
  37     /// </summary>\r
  38     internal sealed class Controller\r
  39     {\r
  40         EditView View;\r
  41         Document Document;\r
  42         int AnchorIndex;\r
  43         \r
  44         public Controller(Document doc, EditView view)\r
  45         {\r
  46             this.Document = doc;\r
  47             this.Document.Update += new DocumentUpdateEventHandler(Document_Update);\r
  48             this.View = view;\r
  49             this.View.render.ChangedRightToLeft += render_ChangedRightToLeft;\r
  50             this.View.render.ChangedRenderResource += render_ChangedRenderResource;\r
  51             this.View.PerformLayouted += View_LineBreakChanged;\r
  52             this.View.PageBoundChanged += View_PageBoundChanged;\r
  53             this.Document.Clear();\r
  54             this.CaretMoved += new EventHandler((s, e) => { });\r
  55         }\r
  56 \r
  57         /// <summary>\r
  58         /// キャレット移動時に通知される\r
  59         /// </summary>\r
  60         public event EventHandler CaretMoved;\r
  61 \r
  62 \r
  63         /// <summary>\r
  64         /// 矩形選択モードなら真を返し、そうでない場合は偽を返す\r
  65         /// </summary>\r
  66         public bool RectSelection\r
  67         {\r
  68             get;\r
  69             set;\r
  70         }\r
  71 \r
  72         /// <summary>\r
  73         /// 選択範囲の開始位置\r
  74         /// </summary>\r
  75         /// <remarks>SelectionLengthが0の場合、キャレット位置を表します</remarks>\r
  76         public int SelectionStart\r
  77         {\r
  78             get\r
  79             {\r
  80                 if (this.View.Selections.Count == 0)\r
  81                     return this.AnchorIndex;\r
  82                 else\r
  83                     return this.View.Selections.First().start;\r
  84             }\r
  85         }\r
  86 \r
  87         /// <summary>\r
  88         /// 選択範囲の長さ\r
  89         /// </summary>\r
  90         /// <remarks>矩形選択モードの場合、選択範囲の文字数ではなく、開始位置から終了位置までの長さとなります</remarks>\r
  91         public int SelectionLength\r
  92         {\r
  93             get\r
  94             {\r
  95                 if (this.View.Selections.Count == 0)\r
  96                     return 0;\r
  97                 Selection last = this.View.Selections.Last();\r
  98                 return last.start + last.length - this.SelectionStart;\r
  99             }\r
 100         }\r
 101 \r
 102         /// <summary>\r
 103         /// 選択範囲内の文字列を返す\r
 104         /// </summary>\r
 105         /// <remarks>\r
 106         /// 未選択状態で代入したときは追加され、そうでない場合は選択範囲の文字列と置き換えられます。\r
 107         /// </remarks>\r
 108         public string SelectedText\r
 109         {\r
 110             get\r
 111             {\r
 112                 if (this.View.LayoutLines.Count == 0 || this.View.Selections.Count == 0)\r
 113                     return null;\r
 114                 string str;\r
 115                 if (this.RectSelection)\r
 116                     str = GetTextFromRectangleSelectArea(this.View.Selections);\r
 117                 else\r
 118                     str = GetTextFromLineSelectArea(this.View.Selections);\r
 119                 return str.Replace(Document.NewLine.ToString(), Environment.NewLine);\r
 120             }\r
 121             set\r
 122             {\r
 123                 if (this.Document.FireUpdateEvent == false)\r
 124                     throw new InvalidOperationException("");\r
 125                 if (value == null)\r
 126                     return;\r
 127                 this.RepleaceSelectionArea(this.View.Selections, value.Replace(Environment.NewLine,Document.NewLine.ToString()));\r
 128             }\r
 129         }\r
 130 \r
 131         /// <summary>\r
 132         /// 選択範囲が逆転しているかどうかを判定する\r
 133         /// </summary>\r
 134         /// <returns>逆転しているなら真を返す</returns>\r
 135         public bool IsReverseSelect()\r
 136         {\r
 137             int index = this.View.LayoutLines.GetIndexFromTextPoint(this.View.CaretPostion);\r
 138             return index < this.AnchorIndex;\r
 139         }\r
 140 \r
 141         /// <summary>\r
 142         /// 指定された範囲を選択する\r
 143         /// </summary>\r
 144         /// <param name="start"></param>\r
 145         /// <param name="length"></param>\r
 146         /// <remarks>RectSelectionの値によって動作が変わります。真の場合は矩形選択モードに、そうでない場合は行ごとに選択されます</remarks>\r
 147         public void Select(int start, int length)\r
 148         {\r
 149             if (this.Document.FireUpdateEvent == false)\r
 150                 throw new InvalidOperationException("");\r
 151             if (start < 0 || start + length < 0 || start + length > this.Document.Length)\r
 152                 throw new ArgumentOutOfRangeException("startかendが指定できる範囲を超えてます");\r
 153             this.View.Selections.Clear();\r
 154             if (length < 0)\r
 155             {\r
 156                 int oldStart = start;\r
 157                 start += length;\r
 158                 length = oldStart - start;\r
 159             }\r
 160             if (this.RectSelection && length != 0)\r
 161             {\r
 162                 TextPoint startTextPoint = this.View.GetLayoutLineFromIndex(start);\r
 163                 TextPoint endTextPoint = this.View.GetLayoutLineFromIndex(start + length);\r
 164                 this.SelectByRectangle(new TextRectangle(startTextPoint, endTextPoint));\r
 165                 if (startTextPoint.col == endTextPoint.col)\r
 166                     this.View.InsertPoint = new SelectCollection(this.View.Selections);\r
 167                 else\r
 168                     this.View.InsertPoint = null;\r
 169             }\r
 170             else\r
 171             {\r
 172                 this.View.Selections.Add(Selection.Create(start, length));\r
 173                 this.View.InsertPoint = null;\r
 174             }\r
 175         }\r
 176 \r
 177         public void Select(TextPoint tp, int width, int height)\r
 178         {\r
 179             if (this.Document.FireUpdateEvent == false || !this.RectSelection)\r
 180                 throw new InvalidOperationException("");\r
 181             TextPoint end = tp;\r
 182 \r
 183             end.row = tp.row + height;\r
 184             end.col = tp.col + width;\r
 185             \r
 186             if (end.row > this.View.LayoutLines.Count - 1)\r
 187                 throw new ArgumentOutOfRangeException("");\r
 188             \r
 189             this.View.Selections.Clear();\r
 190             \r
 191             this.SelectByRectangle(new TextRectangle(tp,end));\r
 192             \r
 193             if (width == 0)\r
 194                 this.View.InsertPoint = new SelectCollection(this.View.Selections);\r
 195             else\r
 196                 this.View.InsertPoint = null;\r
 197         }\r
 198 \r
 199         private void SelectByRectangle(TextRectangle rect)\r
 200         {\r
 201             if (this.Document.FireUpdateEvent == false)\r
 202                 throw new InvalidOperationException("");\r
 203             if (rect.TopLeft <= rect.BottomRight)\r
 204             {\r
 205                 for (int i = rect.TopLeft.row; i <= rect.BottomLeft.row; i++)\r
 206                 {\r
 207                     int length = this.View.LayoutLines.GetLengthFromLineNumber(i);\r
 208                     int leftCol = rect.TopLeft.col, rightCol = rect.TopRight.col, lastCol = length;\r
 209                     if(length > 0 && this.View.LayoutLines[i][length - 1] == Document.NewLine)\r
 210                         lastCol =  length - 1;\r
 211                     if (lastCol < 0)\r
 212                         lastCol = 0;\r
 213                     if (rect.TopLeft.col > lastCol)\r
 214                         leftCol = lastCol;\r
 215                     if (rect.TopRight.col > lastCol)\r
 216                         rightCol = lastCol;\r
 217 \r
 218                     int StartIndex = this.View.LayoutLines.GetIndexFromTextPoint(new TextPoint(i, leftCol));\r
 219                     int EndIndex = this.View.LayoutLines.GetIndexFromTextPoint(new TextPoint(i, rightCol));\r
 220 \r
 221                     Selection sel;\r
 222                     sel = Selection.Create(StartIndex, EndIndex - StartIndex);\r
 223 \r
 224                     this.View.Selections.Add(sel);\r
 225                 }\r
 226             }\r
 227         }\r
 228 \r
 229         /// <summary>\r
 230         /// 単語単位で選択する\r
 231         /// </summary>\r
 232         /// <param name="index">探索を開始するインデックス</param>\r
 233         public void SelectWord(int index)\r
 234         {\r
 235             if (this.Document.FireUpdateEvent == false)\r
 236                 throw new InvalidOperationException("");\r
 237 \r
 238             if (this.Document.Length <= 0 || index >= this.Document.Length)\r
 239                 return;\r
 240 \r
 241             Document str = this.Document;\r
 242 \r
 243             int start = index;\r
 244             while (start > 0 && !Util.IsWordSeparator(str[start]))\r
 245                 start--;\r
 246 \r
 247             if (Util.IsWordSeparator(str[start]))\r
 248                 start++;\r
 249 \r
 250             int end = index;\r
 251             while (end < this.Document.Length && !Util.IsWordSeparator(str[end]))\r
 252                 end++;\r
 253 \r
 254             this.Select(start, end - start);\r
 255         }\r
 256 \r
 257         /// <summary>\r
 258         /// 選択範囲内のUTF32コードポイントを文字列に変換します\r
 259         /// </summary>\r
 260         /// <returns>成功した場合は真。そうでない場合は偽を返す</returns>\r
 261         public bool ConvertToChar()\r
 262         {\r
 263             if (this.SelectionLength == 0 || this.RectSelection)\r
 264                 return false;\r
 265             string str = this.Document.ToString(this.SelectionStart, this.SelectionLength);\r
 266             string[] codes = str.Split(new char[] { ' ' },StringSplitOptions.RemoveEmptyEntries);\r
 267             StringBuilder result = new StringBuilder();\r
 268             foreach (string code in codes)\r
 269             {\r
 270                 int utf32_code;\r
 271                 if (code[0] != 'U')\r
 272                     return false;\r
 273                 if (Int32.TryParse(code.TrimStart('U'),NumberStyles.HexNumber,null, out utf32_code))\r
 274                     result.Append(Char.ConvertFromUtf32(utf32_code));\r
 275                 else\r
 276                     return false;\r
 277             }\r
 278             this.Document.Replace(this.SelectionStart, this.SelectionLength, result.ToString());\r
 279             return true;\r
 280         }\r
 281 \r
 282         /// <summary>\r
 283         /// 選択文字列をUTF32のコードポイントに変換します\r
 284         /// </summary>\r
 285         public void ConvertToCodePoint()\r
 286         {\r
 287             if (this.SelectionLength == 0 || this.RectSelection)\r
 288                 return;\r
 289             string str = this.Document.ToString(this.SelectionStart, this.SelectionLength);\r
 290             StringInfo info = new StringInfo(str);\r
 291             StringBuilder result = new StringBuilder();\r
 292             for (int i = 0; i < str.Length;)\r
 293             {\r
 294                 int utf32_code = Char.ConvertToUtf32(str, i); \r
 295                 result.Append("U" + Convert.ToString(utf32_code,16));\r
 296                 result.Append(' ');\r
 297                 if(Char.IsHighSurrogate(str[i]))\r
 298                     i += 2;\r
 299                 else\r
 300                     i++;\r
 301             }\r
 302             this.Document.Replace(this.SelectionStart, this.SelectionLength, result.ToString());\r
 303         }\r
 304 \r
 305         /// <summary>\r
 306         /// 選択を解除する\r
 307         /// </summary>\r
 308         public void DeSelectAll()\r
 309         {\r
 310             if (this.Document.FireUpdateEvent == false)\r
 311                 throw new InvalidOperationException("");\r
 312 \r
 313             this.View.Selections.Clear();\r
 314         }\r
 315 \r
 316         /// <summary>\r
 317         /// 任意のマーカーかどうか\r
 318         /// </summary>\r
 319         /// <param name="tp"></param>\r
 320         /// <param name="type"></param>\r
 321         /// <returns>真ならマーカーがある</returns>\r
 322         public bool IsMarker(TextPoint tp,HilightType type)\r
 323         {\r
 324             if (this.Document.FireUpdateEvent == false)\r
 325                 throw new InvalidOperationException("");\r
 326             int index = this.View.LayoutLines.GetIndexFromTextPoint(tp);\r
 327             return this.IsMarker(index, type);\r
 328         }\r
 329 \r
 330         /// <summary>\r
 331         /// 任意のマーカーかどうか判定する\r
 332         /// </summary>\r
 333         /// <param name="index"></param>\r
 334         /// <param name="type"></param>\r
 335         /// <returns>真ならマーカーがある</returns>\r
 336         public bool IsMarker(int index, HilightType type)\r
 337         {\r
 338             foreach (Marker m in this.Document.GetMarkers(index))\r
 339             {\r
 340                 if (m.hilight == type)\r
 341                     return true;\r
 342             }\r
 343             return false;\r
 344         }\r
 345 \r
 346         /// <summary>\r
 347         /// キャレット位置を再調整する\r
 348         /// </summary>\r
 349         public void AdjustCaret()\r
 350         {\r
 351             int row = this.View.CaretPostion.row;\r
 352             if (row > this.View.LayoutLines.Count - 1)\r
 353                 row = this.View.LayoutLines.Count - 1;\r
 354             int col = this.View.CaretPostion.col;\r
 355             if (col > 0 && col > this.View.LayoutLines[row].Length)\r
 356                 col = this.View.LayoutLines[row].Length;\r
 357             this.JumpCaret(row, col);\r
 358         }\r
 359 \r
 360         /// <summary>\r
 361         /// キャレットを指定した位置に移動させる\r
 362         /// </summary>\r
 363         /// <param name="index"></param>\r
 364         /// <param name="autoExpand">折り畳みを展開するなら真</param>\r
 365         public void JumpCaret(int index,bool autoExpand = true)\r
 366         {\r
 367             if (index < 0 || index > this.Document.Length)\r
 368                 throw new ArgumentOutOfRangeException("indexが設定できる範囲を超えています");\r
 369             TextPoint tp = this.View.GetLayoutLineFromIndex(index);\r
 370 \r
 371             this.JumpCaret(tp.row, tp.col,autoExpand);\r
 372          }\r
 373 \r
 374         /// <summary>\r
 375         /// キャレットを指定した位置に移動させる\r
 376         /// </summary>\r
 377         /// <param name="row"></param>\r
 378         /// <param name="col"></param>\r
 379         /// <param name="autoExpand">折り畳みを展開するなら真</param>\r
 380         public void JumpCaret(int row, int col, bool autoExpand = true)\r
 381         {\r
 382             if (this.Document.FireUpdateEvent == false)\r
 383                 throw new InvalidOperationException("");\r
 384 \r
 385             this.View.JumpCaret(row, col,autoExpand);\r
 386 \r
 387             this.View.AdjustCaretAndSrc();\r
 388 \r
 389             this.SelectWithMoveCaret(false);\r
 390 \r
 391             this.CaretMoved(this, null);\r
 392         }\r
 393 \r
 394         /// <summary>\r
 395         /// ドキュメントの先頭に移動する\r
 396         /// </summary>\r
 397         /// <param name="isSelected"></param>\r
 398         public void JumpToHead(bool isSelected)\r
 399         {\r
 400             if (this.View.TryScroll(0, 0))\r
 401                 return;\r
 402             this.View.JumpCaret(0, 0);\r
 403             this.View.AdjustCaretAndSrc();\r
 404             this.SelectWithMoveCaret(isSelected);\r
 405             this.CaretMoved(this, null);\r
 406         }\r
 407 \r
 408         /// <summary>\r
 409         /// ドキュメントの終わりにに移動する\r
 410         /// </summary>\r
 411         /// <param name="isSelected"></param>\r
 412         public void JumpToEnd(bool isSelected)\r
 413         {\r
 414             int srcRow = this.View.LayoutLines.Count - this.View.LineCountOnScreen - 1;\r
 415             if(srcRow < 0)\r
 416                 srcRow = 0;\r
 417             if (this.View.TryScroll(0, srcRow))\r
 418                 return;\r
 419             this.View.JumpCaret(this.View.LayoutLines.Count - 1, 0);\r
 420             this.View.AdjustCaretAndSrc();\r
 421             this.SelectWithMoveCaret(isSelected);\r
 422             this.CaretMoved(this, null);\r
 423         }\r
 424 \r
 425         /// <summary>\r
 426         /// スクロールする\r
 427         /// </summary>\r
 428         /// <param name="dir">方向を指定する</param>\r
 429         /// <param name="delta">スクロールする量。ScrollDirectionの値がUpやDownなら行数。LeftやRightならピクセル単位の値となる</param>\r
 430         /// <param name="isSelected">選択状態にするなら真</param>\r
 431         /// <param name="withCaret">同時にキャレットを移動させるなら真</param>\r
 432         public void Scroll(ScrollDirection dir, int delta, bool isSelected,bool withCaret)\r
 433         {\r
 434             if (this.Document.FireUpdateEvent == false)\r
 435                 throw new InvalidOperationException("");\r
 436             int toRow = this.View.Src.Row;\r
 437             double toX = this.View.Src.X;\r
 438             switch (dir)\r
 439             {\r
 440                 case ScrollDirection.Up:\r
 441                     toRow = Math.Max(0, this.View.Src.Row - delta);\r
 442                     toRow = this.View.AdjustRow(toRow, false);\r
 443                     break;\r
 444                 case ScrollDirection.Down:\r
 445                     toRow = Math.Min(this.View.Src.Row + delta, this.View.LayoutLines.Count - 1);\r
 446                     toRow = this.View.AdjustRow(toRow, true);\r
 447                     break;\r
 448                 case ScrollDirection.Left:\r
 449                     toX -= delta;\r
 450                     break;\r
 451                 case ScrollDirection.Right:\r
 452                     toX += delta;\r
 453                     break;\r
 454                 default:\r
 455                     throw new ArgumentOutOfRangeException();\r
 456             }\r
 457             this.Scroll(toX, toRow, isSelected, withCaret);\r
 458         }\r
 459 \r
 460         /// <summary>\r
 461         /// スクロールする\r
 462         /// </summary>\r
 463         /// <param name="toX">スクロール先の座標</param>\r
 464         /// <param name="toRow">スクロール先の行</param>\r
 465         /// <param name="isSelected">選択状態にするなら真</param>\r
 466         /// <param name="withCaret">同時にキャレットを移動させるなら真</param>\r
 467         public void Scroll(double toX, int toRow, bool isSelected, bool withCaret)\r
 468         {\r
 469             if (withCaret)\r
 470             {\r
 471                 this.View.Scroll(toX, toRow);\r
 472                 this.View.JumpCaret(toRow, 0);\r
 473                 this.View.AdjustCaretAndSrc();\r
 474                 this.SelectWithMoveCaret(isSelected);\r
 475                 this.CaretMoved(this, null);\r
 476             }\r
 477             else\r
 478             {\r
 479                 this.View.Scroll(toX, toRow);\r
 480                 this.View.HideCaret = true;\r
 481                 this.View.HideLineMarker = true;\r
 482             }\r
 483         }\r
 484 \r
 485         /// <summary>\r
 486         /// キャレットを桁方向に移動させる\r
 487         /// </summary>\r
 488         /// <returns>移動できない場合は真を返す</returns>\r
 489         /// <param name="realLength">負の値なら左側へ、そうでないなら右側へ移動する</param>\r
 490         /// <param name="isSelected">選択範囲とするなら真。そうでないなら偽</param>\r
 491         /// <param name="alignWord">単語単位で移動するなら真。そうでないなら偽</param>\r
 492         public void MoveCaretHorizontical(int realLength, bool isSelected,bool alignWord = false)\r
 493         {\r
 494             for (int i = Math.Abs(realLength); i > 0; i--)\r
 495             {\r
 496                 bool MoveFlow = realLength > 0;\r
 497                 if (this.View.render.RightToLeft)\r
 498                     MoveFlow = !MoveFlow;\r
 499                 this.MoveCaretHorizontical(MoveFlow);\r
 500 \r
 501                 if (alignWord)\r
 502                     this.AlignNearestWord(MoveFlow);\r
 503             }\r
 504             this.View.AdjustCaretAndSrc(AdjustFlow.Col);\r
 505             this.SelectWithMoveCaret(isSelected);\r
 506             this.CaretMoved(this, null);\r
 507         }\r
 508 \r
 509         void AlignNearestWord(bool MoveFlow)\r
 510         {\r
 511             string str = this.View.LayoutLines[this.View.CaretPostion.row];\r
 512             while (this.View.CaretPostion.col > 0 &&\r
 513                 this.View.CaretPostion.col < str.Length &&\r
 514                 str[this.View.CaretPostion.col] != Document.NewLine)\r
 515             {\r
 516                 if (!Util.IsWordSeparator(str[this.View.CaretPostion.col]))\r
 517                 {\r
 518                     this.MoveCaretHorizontical(MoveFlow);\r
 519                 }\r
 520                 else\r
 521                 {\r
 522                     if(MoveFlow)\r
 523                         this.MoveCaretHorizontical(MoveFlow);\r
 524                     break;\r
 525                 }\r
 526             }\r
 527         }\r
 528 \r
 529         /// <summary>\r
 530         /// キャレットを行方向に移動させる\r
 531         /// </summary>\r
 532         /// <returns>再描写する必要があるなら真を返す</returns>\r
 533         /// <param name="deltarow">移動量</param>\r
 534         /// <param name="isSelected"></param>\r
 535         public void MoveCaretVertical(int deltarow,bool isSelected)\r
 536         {\r
 537             for (int i = Math.Abs(deltarow); i > 0; i--)\r
 538                 this.MoveCaretVertical(deltarow > 0);\r
 539             this.View.AdjustCaretAndSrc(AdjustFlow.Both);\r
 540             this.SelectWithMoveCaret(isSelected);\r
 541             this.CaretMoved(this, null);\r
 542         }\r
 543 \r
 544         /// <summary>\r
 545         /// キャレット位置の文字を一文字削除する\r
 546         /// </summary>\r
 547         public void DoDeleteAction()\r
 548         {\r
 549             if (this.SelectionLength != 0)\r
 550             {\r
 551                 this.SelectedText = "";\r
 552                 return;\r
 553             }\r
 554             \r
 555             if (this.Document.FireUpdateEvent == false)\r
 556                 throw new InvalidOperationException("");\r
 557 \r
 558             TextPoint CaretPostion = this.View.CaretPostion;\r
 559             int index = this.View.GetIndexFromLayoutLine(CaretPostion);\r
 560 \r
 561             if (index == this.Document.Length)\r
 562                 return;\r
 563 \r
 564             int lineHeadIndex = this.View.LayoutLines.GetIndexFromLineNumber(CaretPostion.row);\r
 565             int next = this.View.LayoutLines.GetLayout(CaretPostion.row).AlignIndexToNearestCluster(CaretPostion.col, AlignDirection.Forward) + lineHeadIndex;\r
 566 \r
 567             if (this.Document[index] == Document.NewLine)\r
 568                 next = index + 1;\r
 569 \r
 570             this.Document.Replace(index, next - index, "");\r
 571         }\r
 572 \r
 573         /// <summary>\r
 574         /// キャレット位置の文字を一文字削除し、キャレット位置を後ろにずらす\r
 575         /// </summary>\r
 576         public void DoBackSpaceAction()\r
 577         {\r
 578             if (this.View.InsertPoint != null)\r
 579             {\r
 580                 this.ReplaceBeforeSelectionArea(this.View.Selections, 1, "");\r
 581                 return;\r
 582             }\r
 583             else if (this.SelectionLength > 0)\r
 584             {\r
 585                 this.SelectedText = "";\r
 586                 return;\r
 587             }\r
 588 \r
 589             if (this.Document.FireUpdateEvent == false)\r
 590                 throw new InvalidOperationException("");\r
 591 \r
 592             TextPoint CurrentPostion = this.View.CaretPostion;\r
 593 \r
 594             if (CurrentPostion.row == 0 && CurrentPostion.col == 0)\r
 595                 return;\r
 596 \r
 597             int oldIndex = this.View.GetIndexFromLayoutLine(CurrentPostion);\r
 598 \r
 599             int newCol, newIndex;\r
 600             if (CurrentPostion.col > 0)\r
 601             {\r
 602                 newCol = this.View.LayoutLines.GetLayout(CurrentPostion.row).AlignIndexToNearestCluster(CurrentPostion.col - 1, AlignDirection.Back);\r
 603                 newIndex = this.View.GetIndexFromLayoutLine(new TextPoint(CurrentPostion.row, newCol));\r
 604             }\r
 605             else\r
 606             {\r
 607                 newIndex = this.View.GetIndexFromLayoutLine(CurrentPostion);\r
 608                 newIndex--;\r
 609             }\r
 610 \r
 611             this.Document.Replace(newIndex, oldIndex - newIndex, "");\r
 612         }\r
 613 \r
 614         /// <summary>\r
 615         /// キャレット位置で行を分割する\r
 616         /// </summary>\r
 617         public void DoEnterAction()\r
 618         {            \r
 619             this.DoInputChar('\n');\r
 620         }\r
 621 \r
 622         /// <summary>\r
 623         /// キャレット位置に文字を入力し、その分だけキャレットを進める。isInsertModeの値により動作が変わります\r
 624         /// </summary>\r
 625         /// <param name="ch"></param>\r
 626         public void DoInputChar(char ch)\r
 627         {\r
 628             this.DoInputString(ch.ToString());\r
 629         }\r
 630 \r
 631         /// <summary>\r
 632         /// キャレット位置に文字列を挿入し、その分だけキャレットを進める。isInsertModeの値により動作が変わります\r
 633         /// </summary>\r
 634         /// <param name="str"></param>\r
 635         /// <param name="fromTip"></param>\r
 636         public void DoInputString(string str,bool fromTip = false)\r
 637         {\r
 638             if (this.View.InsertPoint != null)\r
 639             {\r
 640                 this.ReplaceBeforeSelectionArea(this.View.Selections, 0, str);\r
 641                 return;\r
 642             }\r
 643             else if (this.SelectionLength != 0)\r
 644             {\r
 645                 this.RepleaceSelectionArea(this.View.Selections, str, fromTip);\r
 646                 return;\r
 647             }\r
 648 \r
 649             if (this.Document.FireUpdateEvent == false)\r
 650                 throw new InvalidOperationException("");\r
 651 \r
 652             int index = this.View.GetIndexFromLayoutLine(this.View.CaretPostion);\r
 653             int length = 0;\r
 654             TextPoint CaretPos = this.View.CaretPostion;\r
 655             if (this.View.InsertMode == false && index < this.Document.Length && this.Document[index] != Document.NewLine)\r
 656             {\r
 657                 string lineString = this.View.LayoutLines[CaretPos.row];\r
 658                 int end = this.View.LayoutLines.GetLayout(CaretPos.row).AlignIndexToNearestCluster(CaretPos.col + str.Length - 1, AlignDirection.Forward);\r
 659                 if (end > lineString.Length - 1)\r
 660                     end = lineString.Length - 1;\r
 661                 end += this.View.LayoutLines.GetIndexFromLineNumber(CaretPos.row);\r
 662                 length = end - index;\r
 663             }\r
 664             if (str == Document.NewLine.ToString())\r
 665             {\r
 666                 int lineHeadIndex = this.View.LayoutLines.GetIndexFromLineNumber(CaretPos.row);\r
 667                 int lineLength = this.View.LayoutLines.GetLengthFromLineNumber(CaretPos.row);\r
 668                 FoldingItem foldingData = this.View.LayoutLines.FoldingCollection.GetFarestHiddenFoldingData(lineHeadIndex, lineLength);\r
 669                 if (foldingData != null && !foldingData.Expand && index > foldingData.Start && index <= foldingData.End)\r
 670                     index = foldingData.End + 1;\r
 671             }\r
 672             this.Document.Replace(index, length, str);\r
 673         }\r
 674 \r
 675         /// <summary>\r
 676         /// キャレットの移動に合わせて選択する\r
 677         /// </summary>\r
 678         /// <param name="isSelected">選択状態にするかどうか</param>\r
 679         /// <remarks>\r
 680         /// キャレットを移動後、このメソッドを呼び出さない場合、Select()メソッドは正常に機能しません\r
 681         /// </remarks>\r
 682         void SelectWithMoveCaret(bool isSelected)\r
 683         {\r
 684             if (this.View.CaretPostion.col < 0 || this.View.CaretPostion.row < 0)\r
 685                 return;\r
 686 \r
 687             if (this.Document.FireUpdateEvent == false)\r
 688                 throw new InvalidOperationException("");\r
 689 \r
 690             int CaretPostion = this.View.GetIndexFromLayoutLine(this.View.CaretPostion);\r
 691             \r
 692             SelectCollection Selections = this.View.Selections;\r
 693             if (isSelected)\r
 694                 this.Select(this.AnchorIndex, CaretPostion - this.AnchorIndex);\r
 695             else\r
 696             {\r
 697                 this.View.Selections.Clear();\r
 698                 this.AnchorIndex = CaretPostion;\r
 699                 this.View.InsertPoint = null;\r
 700             }\r
 701         }\r
 702 \r
 703         /// <summary>\r
 704         /// JumpCaretで移動した位置からキャレットを移動し、選択状態にする\r
 705         /// </summary>\r
 706         /// <param name="tp"></param>\r
 707         public void MoveCaretAndSelect(TextPoint tp)\r
 708         {\r
 709             int CaretPostion = this.View.GetIndexFromLayoutLine(tp);\r
 710             this.Select(this.AnchorIndex, CaretPostion - this.AnchorIndex);\r
 711             this.View.JumpCaret(tp.row, tp.col);\r
 712             this.View.AdjustCaretAndSrc();\r
 713         }\r
 714 \r
 715         public void MoveSelectBefore(TextPoint tp)\r
 716         {\r
 717             int NewAnchorIndex;\r
 718             int SelectionLength;\r
 719             if (this.IsReverseSelect())\r
 720             {\r
 721                 NewAnchorIndex = this.View.GetIndexFromLayoutLine(tp);\r
 722                 SelectionLength = this.SelectionLength + NewAnchorIndex - this.AnchorIndex;\r
 723                 this.Select(this.SelectionStart, SelectionLength);\r
 724             }\r
 725             else\r
 726             {\r
 727                 NewAnchorIndex = this.View.GetIndexFromLayoutLine(tp);\r
 728                 SelectionLength = this.SelectionLength + this.AnchorIndex - NewAnchorIndex;\r
 729                 this.Select(NewAnchorIndex, SelectionLength);\r
 730             }\r
 731             this.AnchorIndex = NewAnchorIndex;\r
 732         }\r
 733 \r
 734         /// <summary>\r
 735         /// キャレット位置を既定の位置に戻す\r
 736         /// </summary>\r
 737         public void ResetCaretPostion()\r
 738         {\r
 739             this.JumpCaret(0);\r
 740         }\r
 741 \r
 742         /// <summary>\r
 743         /// 行単位で移動後のキャレット位置を取得する\r
 744         /// </summary>\r
 745         /// <param name="count">移動量</param>\r
 746         /// <param name="current">現在のキャレット位置</param>\r
 747         /// <returns>移動後のキャレット位置</returns>\r
 748         public TextPoint GetTextPointAfterMoveLine(int count, TextPoint current)\r
 749         {\r
 750             int row = current.row + count;\r
 751 \r
 752             if (row < 0)\r
 753                 row = 0;\r
 754             else if (row >= this.View.LayoutLines.Count)\r
 755                 row = this.View.LayoutLines.Count - 1;\r
 756 \r
 757             row = this.View.AdjustRow(row, count > 0);\r
 758 \r
 759             double colpos = this.View.GetColPostionFromIndex(current.row, current.col);\r
 760             int col = this.View.GetIndexFromColPostion(row, colpos);\r
 761 \r
 762             return new TextPoint(row, col);\r
 763         }\r
 764 \r
 765         /// <summary>\r
 766         /// 選択文字列のインデントを一つ増やす\r
 767         /// </summary>\r
 768         public void UpIndent()\r
 769         {\r
 770             if (this.RectSelection || this.SelectionLength == 0)\r
 771                 return;\r
 772             int selectionStart = this.SelectionStart;\r
 773             string text = this.InsertLineHead(GetTextFromLineSelectArea(this.View.Selections), "\t");\r
 774             this.RepleaceSelectionArea(this.View.Selections,text);\r
 775             this.Select(selectionStart, text.Length);\r
 776         }\r
 777 \r
 778         /// <summary>\r
 779         /// 選択文字列のインデントを一つ減らす\r
 780         /// </summary>\r
 781         public void DownIndent()\r
 782         {\r
 783             if (this.RectSelection || this.SelectionLength == 0)\r
 784                 return;\r
 785             int selectionStart = this.SelectionStart;\r
 786             string text = this.RemoveLineHead(GetTextFromLineSelectArea(this.View.Selections), "\t");\r
 787             this.RepleaceSelectionArea(this.View.Selections, text);\r
 788             this.Select(selectionStart, text.Length);\r
 789         }\r
 790 \r
 791         string InsertLineHead(string s, string str)\r
 792         {\r
 793             string[] lines = s.Split(new string[] { Document.NewLine.ToString() }, StringSplitOptions.RemoveEmptyEntries);\r
 794             StringBuilder output = new StringBuilder();\r
 795             for (int i = 0; i < lines.Length; i++)\r
 796                 output.Append(str + lines[i] + Document.NewLine);\r
 797             return output.ToString();\r
 798         }\r
 799 \r
 800         public string RemoveLineHead(string s, string str)\r
 801         {\r
 802             string[] lines = s.Split(new string[] { Document.NewLine.ToString() }, StringSplitOptions.RemoveEmptyEntries);\r
 803             StringBuilder output = new StringBuilder();\r
 804             for (int i = 0; i < lines.Length; i++)\r
 805                 if (lines[i].StartsWith(str))\r
 806                     output.Append(lines[i].Substring(1) + Document.NewLine);\r
 807                 else\r
 808                     output.Append(lines[i] + Document.NewLine);\r
 809             return output.ToString();\r
 810         }\r
 811 \r
 812         /// <summary>\r
 813         /// キャレットを一文字移動させる\r
 814         /// </summary>\r
 815         /// <param name="isMoveNext">真なら１文字すすめ、そうでなければ戻す</param>\r
 816         /// <remarks>このメソッドを呼び出した後でScrollToCaretメソッドとSelectWithMoveCaretメソッドを呼び出す必要があります</remarks>\r
 817         void MoveCaretHorizontical(bool isMoveNext)\r
 818         {\r
 819             if (this.Document.FireUpdateEvent == false)\r
 820                 throw new InvalidOperationException("");\r
 821             int delta = isMoveNext ? 0 : -1;\r
 822             int prevcol = this.View.CaretPostion.col;\r
 823             int col = this.View.CaretPostion.col + delta;\r
 824             string lineString = this.View.LayoutLines[this.View.CaretPostion.row];\r
 825             if (col < 0 || this.View.CaretPostion.row >= this.View.LayoutLines.Count)\r
 826             {\r
 827                 if (this.View.CaretPostion.row == 0)\r
 828                 {\r
 829                     col = 0;\r
 830                     return;\r
 831                 }\r
 832                 this.MoveCaretVertical(false);\r
 833                 this.View.AdjustCaretAndSrc(AdjustFlow.Row);  //この段階で調整しないとスクロールされない\r
 834                 col = this.View.LayoutLines.GetLengthFromLineNumber(this.View.CaretPostion.row) - 1;  //最終行以外はすべて改行コードが付くはず\r
 835             }\r
 836             else if (col >= lineString.Length || lineString[col] == Document.NewLine)\r
 837             {\r
 838                 if (this.View.CaretPostion.row < this.View.LayoutLines.Count - 1)\r
 839                 {\r
 840                     this.MoveCaretVertical(true);\r
 841                     this.View.AdjustCaretAndSrc(AdjustFlow.Row);  //この段階で調整しないとスクロールされない\r
 842                     col = 0;\r
 843                 }\r
 844             }\r
 845             else\r
 846             {\r
 847                 AlignDirection direction = isMoveNext ? AlignDirection.Forward : AlignDirection.Back;\r
 848                 col = this.View.LayoutLines.GetLayout(this.View.CaretPostion.row).AlignIndexToNearestCluster(col, direction);\r
 849             }\r
 850 \r
 851             this.View.JumpCaret(this.View.CaretPostion.row, col,false);\r
 852         }\r
 853 \r
 854         /// <summary>\r
 855         /// キャレットを行方向に移動させる\r
 856         /// </summary>\r
 857         /// <param name="isMoveNext">プラス方向に移動するなら真</param>\r
 858         /// <remarks>このメソッドを呼び出した後でScrollToCaretメソッドとSelectWithMoveCaretメソッドを呼び出す必要があります</remarks>\r
 859         void MoveCaretVertical(bool isMoveNext)\r
 860         {\r
 861             if (this.Document.FireUpdateEvent == false)\r
 862                 throw new InvalidOperationException("");\r
 863 \r
 864             TextPoint nextPoint = this.GetTextPointAfterMoveLine(isMoveNext ? 1 : -1, this.View.CaretPostion);\r
 865             \r
 866             this.View.JumpCaret(nextPoint.row, nextPoint.col,false);\r
 867         }\r
 868 \r
 869         private void ReplaceBeforeSelectionArea(SelectCollection Selections, int removeLength, string insertStr)\r
 870         {\r
 871             if (removeLength == 0 && insertStr.Length == 0)\r
 872                 return;\r
 873 \r
 874             if (this.RectSelection == false || this.Document.FireUpdateEvent == false)\r
 875                 throw new InvalidOperationException();\r
 876 \r
 877             SelectCollection temp = this.View.InsertPoint;\r
 878             int selectStart = temp.First().start;\r
 879             int selectEnd = temp.Last().start + temp.Last().length;\r
 880 \r
 881             //ドキュメント操作後に行うとうまくいかないので、あらかじめ取得しておく\r
 882             TextPoint start = this.View.LayoutLines.GetTextPointFromIndex(selectStart);\r
 883             TextPoint end = this.View.LayoutLines.GetTextPointFromIndex(selectEnd);\r
 884 \r
 885             bool reverse = temp.First().start > temp.Last().start;\r
 886 \r
 887             int lineHeadIndex = this.View.LayoutLines.GetIndexFromLineNumber(this.View.LayoutLines.GetLineNumberFromIndex(selectStart));\r
 888             if (selectStart - removeLength < lineHeadIndex)\r
 889                 return;\r
 890 \r
 891             this.Document.UndoManager.BeginUndoGroup();\r
 892             this.Document.FireUpdateEvent = false;\r
 893 \r
 894             if (reverse)\r
 895             {\r
 896                 for (int i = 0; i < temp.Count; i++)\r
 897                 {\r
 898                     this.ReplaceBeforeSelection(temp[i], removeLength, insertStr);\r
 899                 }\r
 900             }\r
 901             else\r
 902             {\r
 903                 for (int i = temp.Count - 1; i >= 0; i--)\r
 904                 {\r
 905                     this.ReplaceBeforeSelection(temp[i], removeLength, insertStr);\r
 906                 }\r
 907             }\r
 908 \r
 909             this.Document.FireUpdateEvent = true;\r
 910             this.Document.UndoManager.EndUndoGroup();\r
 911 \r
 912             int delta = insertStr.Length - removeLength;\r
 913             start.col += delta;\r
 914             end.col += delta;\r
 915 \r
 916             if (reverse)\r
 917                 this.JumpCaret(start.row, start.col);\r
 918             else\r
 919                 this.JumpCaret(end.row, end.col);\r
 920             \r
 921             this.Select(start, 0, end.row - start.row);\r
 922         }\r
 923 \r
 924         private void ReplaceBeforeSelection(Selection sel, int removeLength, string insertStr)\r
 925         {\r
 926             sel = Util.NormalizeIMaker<Selection>(sel);\r
 927             this.Document.Replace(sel.start - removeLength, removeLength, insertStr);\r
 928         }\r
 929 \r
 930         private void RepleaceSelectionArea(SelectCollection Selections, string value,bool updateInsertPoint = false)\r
 931         {\r
 932             if (value == null)\r
 933                 return;\r
 934 \r
 935             if (this.RectSelection == false)\r
 936             {\r
 937                 Selection sel = Selection.Create(this.AnchorIndex, 0);\r
 938                 if (Selections.Count > 0)\r
 939                     sel = Util.NormalizeIMaker<Selection>(this.View.Selections.First());\r
 940 \r
 941                 this.Document.Replace(sel.start, sel.length, value);\r
 942                 return;\r
 943             }\r
 944 \r
 945             if (this.Document.FireUpdateEvent == false)\r
 946                 throw new InvalidOperationException("");\r
 947 \r
 948             int StartIndex = this.SelectionStart;\r
 949 \r
 950             SelectCollection newInsertPoint = new SelectCollection();\r
 951 \r
 952             if (this.SelectionLength == 0)\r
 953             {\r
 954                 int i;\r
 955 \r
 956                 this.Document.UndoManager.BeginUndoGroup();\r
 957 \r
 958                 this.Document.FireUpdateEvent = false;\r
 959 \r
 960                 string[] line = value.Split(new string[] { Document.NewLine.ToString() }, StringSplitOptions.RemoveEmptyEntries);\r
 961 \r
 962                 TextPoint Current = this.View.GetLayoutLineFromIndex(this.SelectionStart);\r
 963 \r
 964                 for (i = 0; i < line.Length && Current.row < this.View.LayoutLines.Count; i++, Current.row++)\r
 965                 {\r
 966                     if (Current.col > this.View.LayoutLines[Current.row].Length)\r
 967                         Current.col = this.View.LayoutLines[Current.row].Length;\r
 968                     StartIndex = this.View.GetIndexFromLayoutLine(Current);\r
 969                     this.Document.Replace(StartIndex, 0, line[i]);\r
 970                     StartIndex += line[i].Length;\r
 971                 }\r
 972 \r
 973                 for (; i < line.Length; i++)\r
 974                 {\r
 975                     StartIndex = this.Document.Length;\r
 976                     string str = Document.NewLine + line[i];\r
 977                     this.Document.Replace(StartIndex, 0, str);\r
 978                     StartIndex += str.Length;\r
 979                 }\r
 980 \r
 981                 this.Document.FireUpdateEvent = true;\r
 982 \r
 983                 this.Document.UndoManager.EndUndoGroup();\r
 984             }\r
 985             else\r
 986             {\r
 987                 SelectCollection temp = new SelectCollection(this.View.Selections); //コピーしないとReplaceCommandを呼び出した段階で書き換えられてしまう\r
 988 \r
 989                 this.Document.UndoManager.BeginUndoGroup();\r
 990 \r
 991                 this.Document.FireUpdateEvent = false;\r
 992 \r
 993                 if (temp.First().start < temp.Last().start)\r
 994                 {\r
 995                     for (int i = temp.Count - 1; i >= 0; i--)\r
 996                     {\r
 997                         Selection sel = Util.NormalizeIMaker<Selection>(temp[i]);\r
 998 \r
 999                         StartIndex = sel.start;\r
1000 \r
1001                         this.Document.Replace(sel.start, sel.length, value);\r
1002 \r
1003                         newInsertPoint.Add(Selection.Create(sel.start + (value.Length - sel.length) * i,0));\r
1004                     }\r
1005                 }\r
1006                 else\r
1007                 {\r
1008                     for (int i = 0; i < temp.Count; i++)\r
1009                     {\r
1010                         Selection sel = Util.NormalizeIMaker<Selection>(temp[i]);\r
1011 \r
1012                         StartIndex = sel.start;\r
1013 \r
1014                         this.Document.Replace(sel.start, sel.length, value);\r
1015 \r
1016                         newInsertPoint.Add(Selection.Create(sel.start + (value.Length - sel.length) * i, 0));\r
1017                     }\r
1018                 }\r
1019 \r
1020                 this.Document.FireUpdateEvent = true;\r
1021 \r
1022                 this.Document.UndoManager.EndUndoGroup();\r
1023             }\r
1024             this.JumpCaret(StartIndex);\r
1025             if (updateInsertPoint && newInsertPoint.Count > 0)\r
1026                 this.View.InsertPoint = newInsertPoint;\r
1027         }\r
1028 \r
1029         private string GetTextFromLineSelectArea(SelectCollection Selections)\r
1030         {\r
1031             Selection sel = Util.NormalizeIMaker<Selection>(Selections.First());\r
1032 \r
1033             string str = this.Document.ToString(sel.start, sel.length);\r
1034 \r
1035             return str;\r
1036         }\r
1037 \r
1038         string GetTextFromRectangleSelectArea(SelectCollection Selections)\r
1039         {\r
1040             StringBuilder temp = new StringBuilder();\r
1041             if (Selections.First().start < Selections.Last().start)\r
1042             {\r
1043                 for (int i = 0; i < this.View.Selections.Count; i++)\r
1044                 {\r
1045                     Selection sel = Util.NormalizeIMaker<Selection>(Selections[i]);\r
1046 \r
1047                     string str = this.Document.ToString(sel.start, sel.length);\r
1048                     if (str.IndexOf(Environment.NewLine) == -1)\r
1049                         temp.AppendLine(str);\r
1050                     else\r
1051                         temp.Append(str);\r
1052                 }\r
1053             }\r
1054             else\r
1055             {\r
1056                 for (int i = this.View.Selections.Count - 1; i >= 0; i--)\r
1057                 {\r
1058                     Selection sel = Util.NormalizeIMaker<Selection>(Selections[i]);\r
1059 \r
1060                     string str = this.Document.ToString(sel.start, sel.length).Replace(Document.NewLine.ToString(), Environment.NewLine);\r
1061                     if (str.IndexOf(Environment.NewLine) == -1)\r
1062                         temp.AppendLine(str);\r
1063                     else\r
1064                         temp.Append(str);\r
1065                 }\r
1066             }\r
1067             return temp.ToString();\r
1068         }\r
1069 \r
1070         void View_LineBreakChanged(object sender, EventArgs e)\r
1071         {\r
1072             this.DeSelectAll();\r
1073             this.AdjustCaret();\r
1074         }\r
1075 \r
1076         void View_PageBoundChanged(object sender, EventArgs e)\r
1077         {\r
1078             if (this.View.LineBreak == LineBreakMethod.PageBound && this.View.PageBound.Width - this.View.LineBreakingMarginWidth > 0)\r
1079                 this.View.PerfomLayouts();\r
1080             this.AdjustCaret();\r
1081         }\r
1082 \r
1083         void render_ChangedRenderResource(object sender, ChangedRenderRsourceEventArgs e)\r
1084         {\r
1085             if (e.type == ResourceType.Font)\r
1086             {\r
1087                 if (this.View.LineBreak == LineBreakMethod.PageBound)\r
1088                     this.View.PerfomLayouts();\r
1089                 this.AdjustCaret();\r
1090             }\r
1091             if (e.type == ResourceType.InlineChar)\r
1092             {\r
1093                 int oldLineCountOnScreen = this.View.LineCountOnScreen;\r
1094                 this.View.CalculateLineCountOnScreen();\r
1095                 if(this.View.LineCountOnScreen != oldLineCountOnScreen)\r
1096                     this.AdjustCaret();\r
1097             }\r
1098         }\r
1099 \r
1100         void render_ChangedRightToLeft(object sender, EventArgs e)\r
1101         {\r
1102             this.AdjustCaret();\r
1103         }\r
1104 \r
1105         void Document_Update(object sender, DocumentUpdateEventArgs e)\r
1106         {\r
1107             switch (e.type)\r
1108             {\r
1109                 case UpdateType.Replace:\r
1110                     if(e.startIndex < this.Document.Length && this.Document[e.startIndex] == Document.NewLine)\r
1111                         this.View.CalculateLineCountOnScreen();\r
1112                     this.JumpCaret(e.startIndex + e.insertLength,true);\r
1113                     break;\r
1114                 case UpdateType.Clear:\r
1115                     this.View.TryScroll(0, 0);\r
1116                     break;\r
1117             }\r
1118         }\r
1119     }\r
1120 }\r