Applied "Providing text editor tooltips using the AddInTree" patch by Christian Hornung.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@1516 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

AddIns/ICSharpCode.SharpDevelop.addin

@@ -1675,6 +1675,10 @@
 		          class ="ICSharpCode.SharpDevelop.DefaultEditor.Commands.ShowBufferOptions"/>
 	</Path>
 	
+	<Path name = "/SharpDevelop/ViewContent/DefaultTextEditor/ToolTips">
+		<Class id = "DefaultDebuggerToolTips" class = "ICSharpCode.Core.DebuggerTextAreaToolTipProvider"/>
+	</Path>
+	
 	<Path name = "/SharpDevelop/Workbench/ToolBar/Standard">
 		<ToolbarItem id = "SearchSeparator" type = "Separator"/>
 		<Condition name = "WindowActive" activewindow="ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor.ITextEditorControlProvider" action="Disable">

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

@@ -776,6 +776,7 @@
     <Compile Include="Src\TextEditor\Gui\Editor\AdvancedHighlighter.cs" />
     <Compile Include="Src\Dom\Implementations\SystemTypes.cs" />
     <Compile Include="Src\Dom\CecilReader.cs" />
+    <Compile Include="Src\TextEditor\Gui\Editor\ITextAreaToolTipProvider.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\Libraries\DockPanel_Src\WinFormsUI\WinFormsUI.csproj">

src/Main/Base/Project/Src/Services/Debugger/DebuggerService.cs

@@ -21,6 +21,8 @@ using System.Drawing;
 using System.Windows.Forms;
 using BM = ICSharpCode.SharpDevelop.Bookmarks;
 using ITextEditorControlProvider = ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor.ITextEditorControlProvider;
+using ITextAreaToolTipProvider = ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor.ITextAreaToolTipProvider;
+using ToolTipInfo = ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor.ToolTipInfo;
 
 namespace ICSharpCode.Core
 {
@@ -282,6 +284,8 @@ namespace ICSharpCode.Core
 		}
 		
 		#region Tool tips
+		const string ToolTipProviderAddInTreePath = "/SharpDevelop/ViewContent/DefaultTextEditor/ToolTips";
+		
 		static DebuggerGridControl oldToolTipControl;
 		
 		/// <summary>
@@ -302,39 +306,28 @@ namespace ICSharpCode.Core
 				}
 				
 				if (e.InDocument) {
-					Point logicPos = e.LogicalPosition;
-					IDocument doc = textArea.Document;
-					IExpressionFinder expressionFinder = ParserService.GetExpressionFinder(textArea.MotherTextEditorControl.FileName);
-					if (expressionFinder == null)
-						return;
-					LineSegment seg = doc.GetLineSegment(logicPos.Y);
-					if (logicPos.X > seg.Length - 1)
-						return;
-					string textContent = doc.TextContent;
-					ExpressionResult expressionResult = expressionFinder.FindFullExpression(textContent, seg.Offset + logicPos.X);
-					string expression = (expressionResult.Expression ?? "").Trim();
-					if (expression.Length > 0) {
-						// Look if it is variable
-						ResolveResult result = ParserService.Resolve(expressionResult, logicPos.Y + 1, logicPos.X + 1, textArea.MotherTextEditorControl.FileName, textContent);
-						bool debuggerCanShowValue;
-						string toolTipText = GetText(result, expression, out debuggerCanShowValue);
-						if (toolTipText != null) {
-							if (Control.ModifierKeys == Keys.Control) {
-								toolTipText = "expr: " + expressionResult.ToString() + "\n" + toolTipText;
-							} else if (debuggerCanShowValue && currentDebugger != null) {
-								toolTipControl = currentDebugger.GetTooltipControl(expressionResult.Expression);
-								toolTipText = null;
+					
+					// Query all registered tooltip providers using the AddInTree.
+					// The first one that does not return null will be used.
+					ToolTipInfo ti = null;
+					foreach (ITextAreaToolTipProvider toolTipProvider in AddInTree.BuildItems<ITextAreaToolTipProvider>(ToolTipProviderAddInTreePath, null, false)) {
+						if ((ti = toolTipProvider.GetToolTipInfo(textArea, e)) != null) {
+							break;
 						}
 					}
-						if (toolTipText != null) {
-							e.ShowToolTip(toolTipText);
+					
+					if (ti != null) {
+						toolTipControl = ti.ToolTipControl;
+						if (ti.ToolTipText != null) {
+							e.ShowToolTip(ti.ToolTipText);
+						}
 					}
 					CloseOldToolTip();
 					if (toolTipControl != null) {
-							toolTipControl.ShowForm(textArea, logicPos);
+						toolTipControl.ShowForm(textArea, e.LogicalPosition);
 					}
 					oldToolTipControl = toolTipControl;
-					}
+					
 				}
 			} catch (Exception ex) {
 				ICSharpCode.Core.MessageService.ShowError(ex);
@@ -365,6 +358,43 @@ namespace ICSharpCode.Core
 				CloseOldToolTip();
 		}
 		
+		/// <summary>
+		/// Gets debugger tooltip information for the specified position.
+		/// A descriptive text for the element or a DebuggerGridControl
+		/// showing its current value (when in debugging mode) can be returned
+		/// through the ToolTipInfo object.
+		/// Returns <c>null</c>, if no tooltip information is available.
+		/// </summary>
+		internal static ToolTipInfo GetToolTipInfo(TextArea textArea, ToolTipRequestEventArgs e)
+		{
+			Point logicPos = e.LogicalPosition;
+			IDocument doc = textArea.Document;
+			IExpressionFinder expressionFinder = ParserService.GetExpressionFinder(textArea.MotherTextEditorControl.FileName);
+			if (expressionFinder == null)
+				return null;
+			LineSegment seg = doc.GetLineSegment(logicPos.Y);
+			if (logicPos.X > seg.Length - 1)
+				return null;
+			string textContent = doc.TextContent;
+			ExpressionResult expressionResult = expressionFinder.FindFullExpression(textContent, seg.Offset + logicPos.X);
+			string expression = (expressionResult.Expression ?? "").Trim();
+			if (expression.Length > 0) {
+				// Look if it is variable
+				ResolveResult result = ParserService.Resolve(expressionResult, logicPos.Y + 1, logicPos.X + 1, textArea.MotherTextEditorControl.FileName, textContent);
+				bool debuggerCanShowValue;
+				string toolTipText = GetText(result, expression, out debuggerCanShowValue);
+				if (toolTipText != null) {
+					if (Control.ModifierKeys == Keys.Control) {
+						toolTipText = "expr: " + expressionResult.ToString() + "\n" + toolTipText;
+					} else if (debuggerCanShowValue && currentDebugger != null) {
+						return new ToolTipInfo(currentDebugger.GetTooltipControl(expressionResult.Expression));
+					}
+					return new ToolTipInfo(toolTipText);
+				}
+			}
+			return null;
+		}
+		
 		static string GetText(ResolveResult result, string expression, out bool debuggerCanShowValue)
 		{
 			debuggerCanShowValue = false;
@@ -464,4 +494,18 @@ namespace ICSharpCode.Core
 		}
 		#endregion
 	}
+	
+	/// <summary>
+	/// Provides the default debugger tooltips on the text area.
+	/// </summary>
+	/// <remarks>
+	/// This class must be public because it is accessed via the AddInTree.
+	/// </remarks>
+	public class DebuggerTextAreaToolTipProvider : ITextAreaToolTipProvider
+	{
+		public ToolTipInfo GetToolTipInfo(TextArea textArea, ToolTipRequestEventArgs e)
+		{
+			return DebuggerService.GetToolTipInfo(textArea, e);
+		}
+	}
 }

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

@@ -0,0 +1,74 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Christian Hornung" email="c-hornung@gmx.de"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+
+using ICSharpCode.Core;
+using ICSharpCode.TextEditor;
+
+namespace ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor
+{
+	/// <summary>
+	/// Describes an object being able to provide tooltip information for
+	/// the text editor.
+	/// </summary>
+	public interface ITextAreaToolTipProvider
+	{
+		/// <summary>
+		/// Gets tooltip information for the specified position in the text area,
+		/// if available.
+		/// </summary>
+		/// <returns><c>null</c>, if no tooltip information is available at this position, otherwise a ToolTipInfo object containing the tooltip information to be displayed.</returns>
+		ToolTipInfo GetToolTipInfo(TextArea textArea, ToolTipRequestEventArgs e);
+	}
+	
+	/// <summary>
+	/// Contains information about a tooltip to be shown on the text area.
+	/// </summary>
+	public class ToolTipInfo
+	{
+		object toolTipObject;
+		
+		/// <summary>
+		/// Gets the tool tip text to be displayed.
+		/// May be <c>null</c>.
+		/// </summary>
+		public string ToolTipText {
+			get {
+				return this.toolTipObject as string;
+			}
+		}
+		
+		/// <summary>
+		/// Gets the DebuggerGridControl to be shown as tooltip.
+		/// May be <c>null</c>.
+		/// </summary>
+		public DebuggerGridControl ToolTipControl {
+			get {
+				return this.toolTipObject as DebuggerGridControl;
+			}
+		}
+		
+		/// <summary>
+		/// Initializes a new instance of the <see cref="ToolTipInfo"/> class.
+		/// </summary>
+		/// <param name="toolTipText">The tooltip text to be displayed.</param>
+		public ToolTipInfo(string toolTipText)
+		{
+			this.toolTipObject = toolTipText;
+		}
+		
+		/// <summary>
+		/// Initializes a new instance of the <see cref="ToolTipInfo"/> class.
+		/// </summary>
+		/// <param name="toolTipControl">The DebuggerGridControl to be shown as tooltip.</param>
+		public ToolTipInfo(DebuggerGridControl toolTipControl)
+		{
+			this.toolTipObject = toolTipControl;
+		}
+	}
+}