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Viewing changes to src/Main/Base/Project/Src/Editor/CodeCompletion/OverrideCompletionItem.cs

  • Committer: sk
  • Date: 2011-09-10 05:17:57 UTC
  • Revision ID: halega@halega.com-20110910051757-qfouz1llya9m6boy
4.1.0.7915 Release Candidate 1

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src/Main/Base/Project/Src/Editor/CodeCompletion/OverrideCompletionItem.cs
 
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
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using System;
 
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using System.Collections.Generic;
 
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using ICSharpCode.Core;
 
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using ICSharpCode.SharpDevelop.Dom;
 
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using ICSharpCode.SharpDevelop.Dom.Refactoring;
 
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namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 
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{
 
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        public sealed class OverrideCompletionItem : ICompletionItem
 
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        {
 
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                IMember member;
 
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                public IMember Member {
 
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                        get { return member; }
 
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                }
 
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                string text;
 
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                IImage image;
 
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                static readonly List<ICompletionItemHandler> handlers = AddInTree.BuildItems<ICompletionItemHandler>("/SharpDevelop/ViewContent/TextEditor/OverrideCompletionHandler", null, false);
 
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                public OverrideCompletionItem(IMember member)
 
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                {
 
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                        if (member == null)
 
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                                throw new ArgumentNullException("member");
 
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                        this.member = member;
 
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                        this.text = GetName(member, ConversionFlags.ShowParameterList);
 
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                        this.image = ClassBrowserIconService.GetIcon(member);
 
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                }
 
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                public string Text {
 
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                        get { return text; }
 
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                }
 
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                public IImage Image {
 
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                        get { return image; }
 
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                }
 
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                public string Description {
 
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                        get {
 
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                                return "override " + GetName(member, ConversionFlags.ShowReturnType
 
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                                                             | ConversionFlags.ShowParameterList
 
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                                                             | ConversionFlags.ShowAccessibility)
 
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                                        + "\n\n" + CodeCompletionItem.ConvertDocumentation(member.Documentation);
 
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                        }
 
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                }
 
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                double ICompletionItem.Priority { get { return 0; } }
 
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                static string GetName(IMember member, ConversionFlags flags)
 
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                {
 
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                        IAmbience ambience = AmbienceService.GetCurrentAmbience();
 
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                        ambience.ConversionFlags = flags | ConversionFlags.ShowParameterNames | ConversionFlags.ShowTypeParameterList;
 
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                        return ambience.Convert(member);
 
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                }
 
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                public void Complete(CompletionContext context)
 
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                {
 
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                        ITextEditor editor = context.Editor;
 
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                        ClassFinder classFinder = new ClassFinder(ParserService.GetParseInformation(editor.FileName),
 
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                                                                  editor.Caret.Line, editor.Caret.Column);
 
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                        int caretPosition = editor.Caret.Offset;
 
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                        IDocumentLine line = editor.Document.GetLine(editor.Caret.Line);
 
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                        string lineText = editor.Document.GetText(line.Offset, caretPosition - line.Offset);
 
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                        foreach (char c in lineText) {
 
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                                if (!char.IsWhiteSpace(c) && !char.IsLetterOrDigit(c)) {
 
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                                        editor.Document.Replace(context.StartOffset, context.Length, this.Text);
 
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                                        context.EndOffset = context.StartOffset + this.Text.Length;
 
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                                        return;
 
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                                }
 
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                        }
 
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                        string indentation = lineText.Substring(0, lineText.Length - lineText.TrimStart().Length);
 
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                        editor.Document.Remove(line.Offset, caretPosition - line.Offset);
 
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                        foreach (ICompletionItemHandler handler in handlers) {
 
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                                if (handler.Handles(this)) {
 
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                                        editor.Document.Insert(line.Offset, indentation);
 
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                                        handler.Insert(context, this);
 
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                                        return;
 
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                                }
 
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                        }
 
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                        CodeGenerator codeGen = ParserService.CurrentProjectContent.Language.CodeGenerator;
 
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                        string text = codeGen.GenerateCode(codeGen.GetOverridingMethod(member, classFinder), indentation);
 
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                        text = text.TrimEnd(); // remove newline from end
 
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                        editor.Document.Insert(line.Offset, text);
 
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                        int endPos = line.Offset + text.Length;
 
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                        line = editor.Document.GetLineForOffset(endPos);
 
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                        editor.JumpTo(line.LineNumber, endPos - line.Offset + 1);
 
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                }
 
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        }
 
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}