Fixed bug in search pad when document was changed after the search.

Fixed crash when two classes with the same name were removed from a project content.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@445 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

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

@@ -1,4 +1,4 @@
-// <file>
+// <file>
 //     <copyright see="prj:///doc/copyright.txt">2002-2005 AlphaSierraPapa</copyright>
 //     <license see="prj:///doc/license.txt">GNU General Public License</license>
 //     <owner name="Daniel Grunwald" email="daniel@danielgrunwald.de"/>
@@ -344,9 +344,13 @@ namespace ICSharpCode.Core
 		
 		void RemoveClass(IClass @class)
 		{
+			string fullClassName = @class.FullyQualifiedName;
+			if (!GetClasses(language).ContainsKey(fullClassName)) {
+				return;
+			}
 			if (@class.IsPartial) {
 				// remove a part of a partial class
-				CompoundClass compound = (CompoundClass)GetClasses(language)[@class.FullyQualifiedName];
+				CompoundClass compound = (CompoundClass)GetClasses(language)[fullClassName];
 				compound.Parts.Remove(@class);
 				if (compound.Parts.Count > 0) {
 					compound.UpdateInformationFromParts();
@@ -359,7 +363,7 @@ namespace ICSharpCode.Core
 			if (nSpace == null) {
 				nSpace = String.Empty;
 			}
-			RemoveClass(@class.FullyQualifiedName, nSpace);
+			RemoveClass(fullClassName, nSpace);
 		}
 		
 		void RemoveClass(string fullyQualifiedName, string nSpace)

src/Main/Base/Project/Src/TextEditor/SearchAndReplace/Pad/Nodes/SearchResultNode.cs

@@ -27,8 +27,6 @@ namespace SearchAndReplace
 		SizeF  spaceSize;
 		static StringFormat sf = (StringFormat)System.Drawing.StringFormat.GenericTypographic.Clone();
 		
-		LineSegment line;
-		
 		Point startPosition;
 		Point endPosition;
 		string positionText;
@@ -50,10 +48,14 @@ namespace SearchAndReplace
 		
 		string DisplayText {
 			get {
-				if (specialText != null)
+				if (specialText != null) {
 					return positionText + specialText;
-				else
+				} else if (document.TotalNumberOfLines > startPosition.Y) {
+					LineSegment line = document.GetLineSegment(startPosition.Y);
 					return positionText + document.GetText(line).Replace("\t", "   ");
+				} else {
+					return positionText;
+				}
 			}
 		}
 		string FileNameText {
@@ -70,7 +72,6 @@ namespace SearchAndReplace
 			endPosition   = result.GetEndPosition(document);
 			positionText =  "(" + (startPosition.Y + 1) + ", " + (startPosition.X + 1) + ") ";
 			
-			line = document.GetLineSegment(startPosition.Y);
 			specialText = result.DisplayText;
 			Text = DisplayText;
 		}
@@ -95,7 +96,7 @@ namespace SearchAndReplace
 			if (specialText != null) {
 				DrawText(g, specialText, Brushes.Black, Font, ref x, e.Bounds.Y);
 			} else {
-				x += DrawLine(g, line, e.Bounds.Y, x);
+				x += DrawLine(g, document.GetLineSegment(startPosition.Y), e.Bounds.Y, x);
 			}
 			if (ShowFileName) {
 				x += DrawDocumentWord(g,