Add definition view pad.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@104 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

AddIns/ICSharpCode.SharpDevelop.addin

@@ -101,6 +101,12 @@
 		     title    = "Bookmarks"
 		     icon     = "PadIcons.Bookmarks"
 		     class    = "Bookmark.BookmarkPad"/>
+		
+		<Pad id       = "DefinitionView"
+		     category = "Tools"
+		     title    = "Definition View"
+		     icon     = "PadIcons.Bookmarks"
+		     class    = "ICSharpCode.SharpDevelop.Gui.DefinitionViewPad"/>
 	</Path>
 	
 	<Path name = "/SharpDevelop/Workbench/Combine/FileFilter">

src/AddIns/BackendBindings/CSharpBinding/Project/Src/FormattingStrategy/CSharpFormattingStrategy.cs

@@ -46,6 +46,7 @@ namespace CSharpBinding.FormattingStrategy
 			
 			IndentationSettings set = new IndentationSettings();
 			set.IndentString = Tab.GetIndentationString(textArea.Document);
+			set.LeaveEmptyLines = false;
 			IndentationReformatter r = new IndentationReformatter();
 			
 			r.Reformat(acc, set);

src/AddIns/BackendBindings/CSharpBinding/Project/Src/FormattingStrategy/Indentation.cs

@@ -7,6 +7,8 @@ namespace CSharpBinding.FormattingStrategy
 	public class IndentationSettings
 	{
 		public string IndentString = "\t";
+		/// <summary>Leave empty lines empty.</summary>
+		public bool LeaveEmptyLines = true;
 	}
 	
 	public class IndentationReformatter
@@ -86,7 +88,7 @@ namespace CSharpBinding.FormattingStrategy
 		public void Step(IDocumentAccessor doc, IndentationSettings set)
 		{
 			string line = doc.Text;
-			if (line.Length == 0) return; // leave empty lines empty
+			if (set.LeaveEmptyLines && line.Length == 0) return; // leave empty lines empty
 			line = line.TrimStart();
 			
 			StringBuilder indent = new StringBuilder();

src/Main/Base/Project/ICSharpCode.SharpDevelop.csproj

@@ -642,6 +642,7 @@
     <Compile Include="Src\Dom\FilePosition.cs" />
     <Compile Include="Src\Project\MSBuildEngine.cs" />
     <Compile Include="Src\TextEditor\Gui\Editor\CodeCompletionBinding.cs" />
+    <Compile Include="Src\Gui\Pads\DefinitionViewPad.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\Libraries\DockPanel_Src\WinFormsUI\WinFormsUI.csproj">

src/Main/Base/Project/Src/Commands/MenuItemBuilders.cs

@@ -349,12 +349,6 @@ namespace ICSharpCode.SharpDevelop.Commands
 		{
 			PadDescriptor padDescriptor;
 			
-			bool IsPadVisible {
-				get {
-					return WorkbenchSingleton.Workbench.WorkbenchLayout.IsVisible(padDescriptor); 
-				}
-			}
-			
 			public MyMenuItem(PadDescriptor padDescriptor) : base(null, null)
 			{
 				this.padDescriptor = padDescriptor;

src/Main/Base/Project/Src/Dom/FilePosition.cs

@@ -37,5 +37,37 @@ namespace ICSharpCode.SharpDevelop.Dom
 				return position;
 			}
 		}
+		
+		public override string ToString()
+		{
+			return String.Format("{0} : (line {1}, col {2})",
+			                     filename,
+			                     Line,
+			                     Column);
+		}
+		
+		public int Line {
+			get {
+				return position.X;
+			}
+		}
+		
+		public int Column {
+			get {
+				return position.X;
+			}
+		}
+		
+		public override bool Equals(object obj)
+		{
+			FilePosition b = obj as FilePosition;
+			if (b == null) return false;
+			return this.Filename == b.Filename && this.Position == b.Position;
+		}
+		
+		public override int GetHashCode()
+		{
+			return filename.GetHashCode() ^ position.GetHashCode();
+		}
 	}
 }

src/Main/Base/Project/Src/Gui/AbstractPadContent.cs

@@ -26,5 +26,11 @@ namespace ICSharpCode.SharpDevelop.Gui
 		public virtual void Dispose()
 		{
 		}
+		
+		public bool IsVisible {
+			get {
+				return Control.Visible && Control.Width > 0;
+			}
+		}
 	}
 }

src/Main/Base/Project/Src/Gui/Pads/DefinitionViewPad.cs

@@ -0,0 +1,102 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Daniel Grunwald" email="daniel@danielgrunwald.de"/>
+//     <version value="$version"/>
+// </file>
+
+using System;
+using System.Windows.Forms;
+using ICSharpCode.Core;
+using ICSharpCode.SharpDevelop.Dom;
+using ICSharpCode.TextEditor;
+using ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor;
+
+namespace ICSharpCode.SharpDevelop.Gui
+{
+	/// <summary>
+	/// Description of the pad content
+	/// </summary>
+	public class DefinitionViewPad : AbstractPadContent
+	{
+		TextEditorControl ctl;
+		
+		/// <summary>
+		/// The <see cref="System.Windows.Forms.Control"/> representing the pad
+		/// </summary>
+		public override Control Control {
+			get {
+				return ctl;
+			}
+		}
+		
+		/// <summary>
+		/// Creates a new DefinitionViewPad object
+		/// </summary>
+		public DefinitionViewPad()
+		{
+			ctl = new TextEditorControl();
+			ctl.Document.ReadOnly = true;
+			ctl.TextEditorProperties = new SharpDevelopTextEditorProperties();
+			ParserService.ParserUpdateStepFinished += UpdateTick;
+		}
+		
+		void UpdateTick(object sender, ParserUpdateStepEventArgs e)
+		{
+			if (!this.IsVisible) return;
+			ResolveResult res = ResolveAtCaret(e);
+			if (res == null) return;
+			FilePosition pos = res.GetDefinitionPosition();
+			if (pos == null) return;
+			ctl.Invoke(new OpenFileDelegate(OpenFile), pos);
+		}
+		
+		ResolveResult ResolveAtCaret(ParserUpdateStepEventArgs e)
+		{
+			IWorkbenchWindow window = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow;
+			if (window == null) return null;
+			ITextEditorControlProvider provider = window.ActiveViewContent as ITextEditorControlProvider;
+			if (provider == null) return null;
+			TextEditorControl ctl = provider.TextEditorControl;
+			if (ctl.FileName != e.FileName) return null;
+			IExpressionFinder expressionFinder = ParserService.GetExpressionFinder(e.FileName);
+			if (expressionFinder == null) return null;
+			Caret caret = ctl.ActiveTextAreaControl.Caret;
+			string expr = expressionFinder.FindFullExpression(e.Content, caret.Offset);
+			if (expr == null) return null;
+			return ParserService.Resolve(expr, caret.Line, caret.Column, e.FileName, e.Content);
+		}
+		
+		delegate void OpenFileDelegate(FilePosition pos);
+		
+		FilePosition oldPosition;
+		
+		void OpenFile(FilePosition pos)
+		{
+			if (pos.Equals(oldPosition)) return;
+			oldPosition = pos;
+			if (pos.Filename != ctl.FileName)
+				ctl.LoadFile(pos.Filename);
+			ctl.ActiveTextAreaControl.ScrollTo(int.MaxValue); // scroll completely down
+			ctl.ActiveTextAreaControl.Caret.Line = pos.Line - 1;
+			ctl.ActiveTextAreaControl.ScrollToCaret(); // scroll up to search position
+		}
+		
+		/// <summary>
+		/// Refreshes the pad
+		/// </summary>
+		public override void RedrawContent()
+		{
+			// Refresh the whole pad control here, renew all resource strings whatever.
+		}
+		
+		/// <summary>
+		/// Cleans up all used resources
+		/// </summary>
+		public override void Dispose()
+		{
+			ParserService.ParserUpdateStepFinished -= UpdateTick;
+			ctl.Dispose();
+		}
+	}
+}

src/Main/Base/Project/Src/Services/ParserService/ParseInformationEventHandler.cs

@@ -51,4 +51,36 @@ namespace ICSharpCode.Core
 			this.compilationUnit  = compilationUnit;
 		}
 	}
+	
+	public delegate void ParserUpdateStepEventHandler(object sender, ParserUpdateStepEventArgs e);
+	
+	public class ParserUpdateStepEventArgs : EventArgs
+	{
+		string fileName;
+		string content;
+		bool updated;
+		
+		public ParserUpdateStepEventArgs(string fileName, string content, bool updated)
+		{
+			this.fileName = fileName;
+			this.content = content;
+			this.updated = updated;
+		}
+		
+		public string FileName {
+			get {
+				return fileName;
+			}
+		}
+		public string Content {
+			get {
+				return content;
+			}
+		}
+		public bool Updated {
+			get {
+				return updated;
+			}
+		}
+	}
 }

src/Main/Base/Project/Src/Services/ParserService/ParserService.cs

@@ -110,43 +110,7 @@ namespace ICSharpCode.Core
 		{
 			while (!doneParserThread) {
 				try {
-					if (WorkbenchSingleton.Workbench.ActiveWorkbenchWindow != null && WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ActiveViewContent != null) {
+					ParserUpdateStep();
-						IEditable editable = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ActiveViewContent as IEditable;
-						if (editable != null) {
-							string fileName = null;
-							
-							IViewContent viewContent = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ViewContent;
-							IParseableContent parseableContent = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ActiveViewContent as IParseableContent;
-							
-							//ivoko: Pls, do not throw text = parseableContent.ParseableText away. I NEED it.
-							string text = null;
-							if (parseableContent != null) {
-								fileName = parseableContent.ParseableContentName;
-								text = parseableContent.ParseableText;
-							} else {
-								fileName = viewContent.IsUntitled ? viewContent.UntitledName : viewContent.FileName;
-							}
-							
-							if (!(fileName == null || fileName.Length == 0)) {
-								ParseInformation parseInformation = null;
-								bool updated = false;
-								if (text == null) {
-									text = editable.Text;
-								}
-								int hash = text.Length;
-								if (!lastUpdateSize.ContainsKey(fileName) || (int)lastUpdateSize[fileName] != hash) {
-									parseInformation = ParseFile(fileName, text, !viewContent.IsUntitled, true);
-									lastUpdateSize[fileName] = hash;
-									updated = true;
-								}
-								if (updated) {
-									if (parseInformation != null && editable is IParseInformationListener) {
-										((IParseInformationListener)editable).ParseInformationUpdated(parseInformation);
-									}
-								}
-							}
-						}
-					}
 				} catch (Exception e) {
 					ICSharpCode.Core.MessageService.ShowError(e);
 				}
@@ -154,7 +118,58 @@ namespace ICSharpCode.Core
 			}
 		}
 		
-	
+		static void ParserUpdateStep()
+		{
+			if (WorkbenchSingleton.Workbench.ActiveWorkbenchWindow != null && WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ActiveViewContent != null) {
+				IEditable editable = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ActiveViewContent as IEditable;
+				if (editable != null) {
+					string fileName = null;
+					
+					IViewContent viewContent = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ViewContent;
+					IParseableContent parseableContent = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ActiveViewContent as IParseableContent;
+					
+					//ivoko: Pls, do not throw text = parseableContent.ParseableText away. I NEED it.
+					string text = null;
+					if (parseableContent != null) {
+						fileName = parseableContent.ParseableContentName;
+						text = parseableContent.ParseableText;
+					} else {
+						fileName = viewContent.IsUntitled ? viewContent.UntitledName : viewContent.FileName;
+					}
+					
+					if (!(fileName == null || fileName.Length == 0)) {
+						ParseInformation parseInformation = null;
+						bool updated = false;
+						if (text == null) {
+							text = editable.Text;
+							if (text == null) return;
+						}
+						int hash = text.Length;
+						if (!lastUpdateSize.ContainsKey(fileName) || (int)lastUpdateSize[fileName] != hash) {
+							parseInformation = ParseFile(fileName, text, !viewContent.IsUntitled, true);
+							lastUpdateSize[fileName] = hash;
+							updated = true;
+						}
+						if (updated) {
+							if (parseInformation != null && editable is IParseInformationListener) {
+								((IParseInformationListener)editable).ParseInformationUpdated(parseInformation);
+							}
+						}
+						OnParserUpdateStepFinished(new ParserUpdateStepEventArgs(fileName, text, updated));
+					}
+				}
+			}
+		}
+		
+		public static event ParserUpdateStepEventHandler ParserUpdateStepFinished;
+		
+		static void OnParserUpdateStepFinished(ParserUpdateStepEventArgs e)
+		{
+			if (ParserUpdateStepFinished != null) {
+				ParserUpdateStepFinished(typeof(ParserService), e);
+			}
+		}
+		
 		public static ParseInformation ParseFile(string fileName)
 		{
 			return ParseFile(fileName, null);

src/Main/Base/Project/Src/TextEditor/Gui/Editor/TextEditorDisplayBinding.cs

@@ -122,6 +122,7 @@ namespace ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor
 		
 		public string Text {
 			get {
+				if (textAreaControl.IsDisposed) return null;
 				if (textAreaControl.InvokeRequired)
 					return (string)textAreaControl.Invoke(new GetTextDelegate(GetText));
 				else