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Diffstat (limited to 'main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Editor/Commands/DynamicAbbrevHandler.cs')
| -rw-r--r-- | main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Editor/Commands/DynamicAbbrevHandler.cs | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Editor/Commands/DynamicAbbrevHandler.cs b/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Editor/Commands/DynamicAbbrevHandler.cs new file mode 100644 index 0000000000..08306da514 --- /dev/null +++ b/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Editor/Commands/DynamicAbbrevHandler.cs @@ -0,0 +1,193 @@ +// +// DynamicAbbrevHandler.cs +// +// Author: +// Mike Krüger <mkrueger@novell.com> +// +// Copyright (c) 2009 Novell, Inc (http://www.novell.com) +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +using System.Linq; +using MonoDevelop.Components.Commands; +using MonoDevelop.Ide.Gui; +using System.Collections.Generic; +using MonoDevelop.Ide; + +namespace MonoDevelop.Ide.Editor +{ + class DynamicAbbrevHandler : CommandHandler + { + enum AbbrevState { + SearchBackward, + SearchForward, + SearchOtherBuffers, + CycleThroughFoundWords + } + + static TextEditor lastView = null; + static string lastAbbrev = null; + static int lastTriggerOffset = 0; + static int lastInsertPos = 0; + static List<string> foundWords = new List<string> (); + static int lastStartOffset = 0; + static AbbrevState curState; + + protected override void Run (object data) + { + var doc = IdeApp.Workbench.ActiveDocument; + if (doc == null) + return; + var editor = doc.Editor; + if (editor == null) + return; + + string abbrevWord; + int offset; + int startOffset; + + if (lastView == editor && editor.CaretOffset == lastTriggerOffset) { + abbrevWord = lastAbbrev; + offset = lastStartOffset; + } else { + abbrevWord = GetWordBeforeCaret (editor); + lastAbbrev = abbrevWord; + offset = editor.CaretOffset - abbrevWord.Length - 1; + lastInsertPos = lastTriggerOffset = offset + 1; + foundWords.Clear (); + foundWords.Add (abbrevWord); + curState = AbbrevState.SearchBackward; + } + + lastView = editor; + switch (curState) { + case AbbrevState.SearchBackward: + while (offset > 0) { + if (IsMatchAt (editor, offset, abbrevWord)) { + int endOffset = SearchEndPos (offset, editor); + string curWord = editor.GetTextBetween (offset, endOffset); + if (foundWords.Contains (curWord)) { + offset--; + continue; + } + foundWords.Add (curWord); + ReplaceWord (editor, curWord); + lastStartOffset = offset - 1; + return; + } + offset--; + } + offset = editor.CaretOffset; + curState = AbbrevState.SearchForward; + goto case AbbrevState.SearchForward; + case AbbrevState.SearchForward: + while (offset < editor.Length) { + if (IsMatchAt (editor, offset, abbrevWord)) { + int endOffset = SearchEndPos (offset, editor); + string curWord = editor.GetTextBetween (offset, endOffset); + if (foundWords.Contains (curWord)) { + offset++; + continue; + } + foundWords.Add (curWord); + ReplaceWord (editor, curWord); + lastStartOffset = offset + 1; + return; + } + offset++; + } + curState = AbbrevState.SearchOtherBuffers; + goto case AbbrevState.SearchOtherBuffers; + case AbbrevState.SearchOtherBuffers: + foreach (Document curDoc in IdeApp.Workbench.Documents) { + var otherView = curDoc.GetContent<TextEditor> (); + if (curDoc == doc || otherView == null) + continue; + for (int i = 0; i < otherView.Length; i++) { + if (IsMatchAt (otherView, i, abbrevWord)) { + int endOffset = SearchEndPos (i, otherView); + string curWord = otherView.GetTextBetween (i, endOffset); + if (foundWords.Contains (curWord)) + continue; + foundWords.Add (curWord); + } + } + } + curState = AbbrevState.CycleThroughFoundWords; + goto case AbbrevState.CycleThroughFoundWords; + case AbbrevState.CycleThroughFoundWords: + int index = foundWords.IndexOf (editor.GetTextAt (lastInsertPos, editor.CaretOffset - lastInsertPos)); + if (index < 0) + break; + startOffset = offset; + offset = startOffset + foundWords[index].Length; + index = (index + foundWords.Count + 1) % foundWords.Count; + ReplaceWord (editor, foundWords[index]); + break; + } + } + + public static bool IsIdentifierPart (char ch) + { + return char.IsLetterOrDigit (ch) || ch == '_'; + } + + static string GetWordBeforeCaret (TextEditor editor) + { + int startOffset = editor.CaretOffset; + int offset = startOffset - 1; + while (offset > 0) { + char ch = editor.GetCharAt (offset); + if (!IsIdentifierPart (ch)) { + offset++; + break; + } + offset--; + } + if (offset >= startOffset) + return ""; + return editor.GetTextBetween (offset, startOffset); + } + + static void ReplaceWord (TextEditor editor, string curWord) + { + editor.ReplaceText (lastInsertPos, editor.CaretOffset - lastInsertPos, curWord); + lastTriggerOffset = editor.CaretOffset; + } + + static int SearchEndPos (int offset, TextEditor editor) + { + while (offset < editor.Length && IsIdentifierPart (editor.GetCharAt (offset))) { + offset++; + } + return offset; + } + + static bool IsMatchAt (TextEditor editor, int offset, string abbrevWord) + { + if (offset + abbrevWord.Length >= editor.Length) + return false; + if (offset > 0 && IsIdentifierPart (editor.GetCharAt (offset - 1))) + return false; + if (offset + abbrevWord.Length < editor.Length && !IsIdentifierPart (editor.GetCharAt (offset + abbrevWord.Length))) + return false; + return editor.GetTextAt (offset, abbrevWord.Length) == abbrevWord; + } + } +}
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