Daniel Grunwald
14 years ago
33 changed files with 488 additions and 547 deletions
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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.Text; |
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using ICSharpCode.Core; |
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using ICSharpCode.SharpDevelop; |
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using ICSharpCode.SharpDevelop.Dom; |
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using ICSharpCode.SharpDevelop.Dom.CSharp; |
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using ICSharpCode.SharpDevelop.Editor; |
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using ICSharpCode.SharpDevelop.Editor.CodeCompletion; |
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using System.Windows.Input; |
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namespace CSharpBinding |
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{ |
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public class EventHandlerCompletionItemProvider : AbstractCompletionItemProvider |
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{ |
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string expression; |
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ResolveResult resolveResult; |
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IReturnType resolvedReturnType; |
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IClass resolvedClass; |
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public EventHandlerCompletionItemProvider(string expression, ResolveResult resolveResult) |
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{ |
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this.expression = expression; |
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this.resolveResult = resolveResult; |
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this.resolvedReturnType = resolveResult.ResolvedType; |
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this.resolvedClass = resolvedReturnType.GetUnderlyingClass(); |
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} |
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public override ICompletionItemList GenerateCompletionList(ITextEditor editor) |
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{ |
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DefaultCompletionItemList result = new DefaultCompletionItemList(); |
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result.InsertSpace = true; |
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// delegate { }
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result.Items.Add(new DelegateCompletionItem("delegate { };", 3, |
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"${res:CSharpBinding.InsertAnonymousMethod}")); |
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CSharpAmbience ambience = new CSharpAmbience(); |
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// get eventHandler type name incl. type argument list
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ambience.ConversionFlags = ConversionFlags.ShowParameterNames | ConversionFlags.ShowTypeParameterList | ConversionFlags.UseFullyQualifiedTypeNames; |
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string eventHandlerFullyQualifiedTypeName = ambience.Convert(resolvedReturnType); |
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ambience.ConversionFlags = ConversionFlags.ShowParameterNames | ConversionFlags.ShowTypeParameterList; |
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string eventHandlerTypeName = ambience.Convert(resolvedReturnType); |
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// retrieve Invoke method from resolvedReturnType instead of resolvedClass to get a method where
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// type arguments are substituted.
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IMethod invoke = resolvedReturnType.GetMethods().Find(delegate(IMethod m) { return m.Name == "Invoke"; }); |
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StringBuilder parameterString = new StringBuilder(); |
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if (invoke != null) { |
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// build the parameter string
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for (int i = 0; i < invoke.Parameters.Count; ++i) { |
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if (i > 0) { |
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parameterString.Append(", "); |
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} |
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parameterString.Append(ambience.Convert(invoke.Parameters[i])); |
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} |
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// delegate(object sender, EventArgs e) { };
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StringBuilder anonMethodWithParametersBuilder = |
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new StringBuilder("delegate(").Append(parameterString.ToString()).Append(") { };"); |
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result.Items.Add(new DelegateCompletionItem(anonMethodWithParametersBuilder.ToString(), 3, |
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"${res:CSharpBinding.InsertAnonymousMethodWithParameters}")); |
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// new EventHandler(ClassName_EventName);
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IClass callingClass = resolveResult.CallingClass; |
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bool inStatic = false; |
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if (resolveResult.CallingMember != null) |
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inStatic = resolveResult.CallingMember.IsStatic; |
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// ...build the new handler name...
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string newHandlerName = BuildHandlerName(); |
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if (newHandlerName == null) { |
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MemberResolveResult mrr = resolveResult as MemberResolveResult; |
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IEvent eventMember = (mrr != null ? mrr.ResolvedMember as IEvent : null); |
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newHandlerName = |
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((callingClass != null) ? callingClass.Name : "callingClass") |
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+ "_" |
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+ ((eventMember != null) ? eventMember.Name : "eventMember"); |
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} |
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// ...build the completion text...
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StringBuilder newHandlerTextBuilder = new StringBuilder("new ").Append(eventHandlerTypeName).Append("("); |
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newHandlerTextBuilder.Append(newHandlerName).Append(");"); |
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// ...build the optional new method text...
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StringBuilder newHandlerCodeBuilder = new StringBuilder(); |
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newHandlerCodeBuilder.AppendLine().AppendLine(); |
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if (inStatic) |
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newHandlerCodeBuilder.Append("static "); |
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newHandlerCodeBuilder.Append(ambience.Convert(invoke.ReturnType)).Append(" ").Append(newHandlerName); |
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newHandlerCodeBuilder.Append("(").Append(parameterString.ToString()).AppendLine(")"); |
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newHandlerCodeBuilder.AppendLine("{"); |
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newHandlerCodeBuilder.AppendLine("throw new NotImplementedException();"); |
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newHandlerCodeBuilder.Append("}"); |
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// ...and add it to the completionData.
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result.Items.Add(new NewEventHandlerCompletionItem( |
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newHandlerTextBuilder.ToString(), |
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2+newHandlerName.Length, |
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newHandlerName.Length, |
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"new " + eventHandlerFullyQualifiedTypeName + |
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"(" + newHandlerName + StringParser.Parse(")\n${res:CSharpBinding.GenerateNewHandlerInstructions}\n") |
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+ CodeCompletionItem.ConvertDocumentation(resolvedClass.Documentation), |
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resolveResult, |
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newHandlerCodeBuilder.ToString() |
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)); |
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if (callingClass != null) { |
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foreach (IMethod method in callingClass.DefaultReturnType.GetMethods()) { |
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if (inStatic && !method.IsStatic) |
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continue; |
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if (!method.IsAccessible(callingClass, true)) |
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continue; |
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if (method.Parameters.Count != invoke.Parameters.Count) |
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continue; |
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// check return type compatibility:
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if (!MemberLookupHelper.ConversionExists(method.ReturnType, invoke.ReturnType)) |
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continue; |
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bool ok = true; |
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for (int i = 0; i < invoke.Parameters.Count; i++) { |
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if (!MemberLookupHelper.ConversionExists(invoke.Parameters[i].ReturnType, method.Parameters[i].ReturnType)) { |
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ok = false; |
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break; |
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} |
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} |
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if (ok) { |
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result.Items.Add(new CodeCompletionItem(method)); |
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} |
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} |
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} |
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} |
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result.SortItems(); |
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return result; |
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} |
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string BuildHandlerName() |
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{ |
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if (expression != null) |
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expression = expression.Trim(); |
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if (string.IsNullOrEmpty(expression)) |
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return null; |
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if (!(char.IsLetter(expression[0]) || expression[0] == '_')) |
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return null; |
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StringBuilder handlerNameBuilder = new StringBuilder(); |
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for (int i = 0; i < expression.Length; i++) { |
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if (char.IsLetterOrDigit(expression[i]) || expression[i] == '_') { |
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handlerNameBuilder.Append(expression[i]); |
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} else if (expression[i] == '.') { |
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if (ICSharpCode.NRefactory.Parser.CSharp.Keywords.IsNonIdentifierKeyword(handlerNameBuilder.ToString())) { |
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return null; |
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} |
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handlerNameBuilder.Append('_'); |
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} else { |
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return null; |
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} |
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} |
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return handlerNameBuilder.ToString(); |
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} |
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sealed class DelegateCompletionItem : DefaultCompletionItem |
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{ |
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int cursorOffset; |
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public DelegateCompletionItem(string text, int cursorOffset, string documentation) |
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: base(text) |
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{ |
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this.cursorOffset = cursorOffset; |
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this.Description = StringParser.Parse(documentation); |
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this.Image = ClassBrowserIconService.Delegate; |
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} |
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public override void Complete(CompletionContext context) |
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{ |
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base.Complete(context); |
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context.Editor.Caret.Column -= cursorOffset; |
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} |
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} |
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sealed class NewEventHandlerCompletionItem : DefaultCompletionItem |
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{ |
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int selectionBeginOffset; |
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int selectionLength; |
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ResolveResult resolveResult; |
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string newHandlerCode; |
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ITextEditor editor; |
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public NewEventHandlerCompletionItem(string text, int selectionBeginOffset, int selectionLength, string documentation, ResolveResult resolveResult, string newHandlerCode) |
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: base(text) |
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{ |
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this.selectionBeginOffset = selectionBeginOffset; |
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this.selectionLength = selectionLength; |
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this.resolveResult = resolveResult; |
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this.newHandlerCode = newHandlerCode; |
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this.Description = StringParser.Parse(documentation); |
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this.Image = ClassBrowserIconService.Delegate; |
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} |
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public override void Complete(CompletionContext context) |
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{ |
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base.Complete(context); |
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// save a reference to the relevant textArea so that we can remove our event handlers after the next keystroke
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editor = context.Editor; |
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// select suggested name
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editor.Caret.Column -= this.selectionBeginOffset; |
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editor.Select(editor.Caret.Offset, this.selectionLength); |
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// TODO: refactor ToolTip architecture to allow for showing a tooltip relative to the current caret position so that we can show our "press TAB to create this method" text as a text-based tooltip
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// TODO: skip the auto-insert step if the method already exists, or change behavior so that it moves the caret inside the existing method.
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// attach our keydown filter to catch the next character pressed
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editor.SelectionChanged += EditorSelectionChanged; |
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editor.KeyPress += EditorKeyPress; |
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} |
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void RemoveEventHandlers() |
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{ |
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if (editor != null) { |
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editor.SelectionChanged -= EditorSelectionChanged; |
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editor.KeyPress -= EditorKeyPress; |
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editor = null; |
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} |
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} |
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void EditorSelectionChanged(object sender, EventArgs e) |
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{ |
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RemoveEventHandlers(); |
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} |
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void EditorKeyPress(object sender, KeyEventArgs e) |
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{ |
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if (e.Key == Key.Tab || e.Key == Key.Enter || e.Key == Key.Return) { |
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using (editor.Document.OpenUndoGroup()) { |
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// is there a better way to calculate the optimal insertion point?
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DomRegion region = resolveResult.CallingMember.BodyRegion; |
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editor.Caret.Line = region.EndLine; |
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editor.Caret.Column = region.EndColumn; |
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editor.Document.Insert(editor.Caret.Offset, this.newHandlerCode); |
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editor.Language.FormattingStrategy.IndentLines(editor, region.EndLine, editor.Caret.Line); |
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IDocumentLine line = editor.Document.GetLine(editor.Caret.Line - 1); |
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int indentationLength = DocumentUtilitites.GetWhitespaceAfter(editor.Document, line.Offset).Length; |
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editor.Select(line.Offset + indentationLength, line.Length - indentationLength); |
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} |
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e.Handled = true; |
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} |
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// detatch our keydown filter to return to the normal processing state
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RemoveEventHandlers(); |
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} |
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} |
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} |
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} |
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@ -1,57 +0,0 @@ |
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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 ICSharpCode.NRefactory; |
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using ICSharpCode.NRefactory.Ast; |
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using ICSharpCode.NRefactory.Visitors; |
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using ICSharpCode.SharpDevelop.Dom; |
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namespace CSharpBinding |
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{ |
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/// <summary>
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/// Removes members that are in the specified range.
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/// </summary>
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sealed class RemoveMembersInRangeVisitor : AbstractAstTransformer |
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{ |
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DomRegion region; |
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public RemoveMembersInRangeVisitor(DomRegion region) |
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{ |
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this.region = region; |
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} |
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bool RemoveIfInRange(INode node) |
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{ |
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if (node.StartLocation.IsEmpty) |
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return false; |
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if (region.IsInside(node.StartLocation.Line, node.StartLocation.Column)) { |
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if (node.EndLocation.IsEmpty || region.IsInside(node.EndLocation.Line, node.EndLocation.Column)) { |
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RemoveCurrentNode(); |
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return true; |
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} |
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} |
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return false; |
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} |
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public override object VisitPropertyDeclaration(PropertyDeclaration propertyDeclaration, object data) |
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{ |
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return RemoveIfInRange(propertyDeclaration) ? null : base.VisitPropertyDeclaration(propertyDeclaration, data); |
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} |
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public override object VisitMethodDeclaration(MethodDeclaration methodDeclaration, object data) |
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{ |
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return RemoveIfInRange(methodDeclaration) ? null : base.VisitMethodDeclaration(methodDeclaration, data); |
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} |
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public override object VisitFieldDeclaration(FieldDeclaration fieldDeclaration, object data) |
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{ |
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return RemoveIfInRange(fieldDeclaration) ? null : base.VisitFieldDeclaration(fieldDeclaration, data); |
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} |
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public override object VisitTypeDeclaration(TypeDeclaration typeDeclaration, object data) |
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{ |
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return RemoveIfInRange(typeDeclaration) ? null : base.VisitTypeDeclaration(typeDeclaration, data); |
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} |
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} |
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} |
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