Handle errors when writing new class diagram (fixes forum-9024: Read only class diagram file causing System.UnauthorizedAccessException)

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3828 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/ClassDiagram/ClassDiagramAddin/ClassDiagramAddin.csproj

@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">
   <PropertyGroup>
     <OutputType>Library</OutputType>
     <RootNamespace>ClassDiagramAddin</RootNamespace>
@@ -11,6 +11,8 @@
     <NoStdLib>False</NoStdLib>
     <WarningLevel>4</WarningLevel>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+    <SourceAnalysisOverrideSettingsFile>C:\Users\Daniel\AppData\Roaming\ICSharpCode/SharpDevelop3.0\Settings.SourceAnalysis</SourceAnalysisOverrideSettingsFile>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
     <IntermediateOutputPath>obj\Debug\</IntermediateOutputPath>

src/AddIns/DisplayBindings/ClassDiagram/ClassDiagramAddin/Src/ShowClassDiagramCommand.cs

@@ -11,12 +11,12 @@ using System.IO;
 using System.Windows.Forms;
 
 using ClassDiagram;
-
 using ICSharpCode.Core;
 using ICSharpCode.SharpDevelop;
-using ICSharpCode.SharpDevelop.Project;
 using ICSharpCode.SharpDevelop.Commands;
 using ICSharpCode.SharpDevelop.Dom;
+using ICSharpCode.SharpDevelop.Project;
+using System.Xml;
 
 namespace ClassDiagramAddin
 {
@@ -50,15 +50,24 @@ namespace ClassDiagramAddin
 				}
 				
 				classcanvas.AutoArrange();
-				classcanvas.WriteToXml().Save(filename);
-				FileProjectItem fpi = new FileProjectItem(p, ItemType.Content);
-				fpi.FileName = filename;
-				ProjectService.AddProjectItem(p, fpi);
-				ProjectBrowserPad.Instance.ProjectBrowserControl.RefreshView();
-				p.Save();
-				FileService.OpenFile(filename);
+				XmlDocument xmlDocument = classcanvas.WriteToXml();
+				FileUtility.ObservedSave(
+					newFileName => SaveAndOpenNewClassDiagram(p, newFileName, xmlDocument),
+					filename, FileErrorPolicy.ProvideAlternative
+				);
 			}
 		}
+
+		void SaveAndOpenNewClassDiagram(IProject p, string filename, XmlDocument xmlDocument)
+		{
+			xmlDocument.Save(filename);
+			FileProjectItem fpi = new FileProjectItem(p, ItemType.Content);
+			fpi.FileName = filename;
+			ProjectService.AddProjectItem(p, fpi);
+			ProjectBrowserPad.Instance.ProjectBrowserControl.RefreshView();
+			p.Save();
+			FileService.OpenFile(filename);
+		}
 	}
 
 }

src/Main/Base/Project/Src/Gui/Pads/ProjectBrowser/Commands/SolutionNodeCommands.cs

@@ -68,11 +68,15 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 	{
 		public static void AddProject(ISolutionFolderNode solutionFolderNode, string fileName)
 		{
+			if (solutionFolderNode == null)
+				throw new ArgumentNullException("solutionFolderNode");
 			AddProject(solutionFolderNode, LanguageBindingService.LoadProject(solutionFolderNode.Solution, fileName, Path.GetFileNameWithoutExtension(fileName)));
 		}
 		
 		public static void AddProject(ISolutionFolderNode solutionFolderNode, IProject newProject)
 		{
+			if (solutionFolderNode == null)
+				throw new ArgumentNullException("solutionFolderNode");
 			if (newProject != null) {
 				newProject.Location = FileUtility.GetRelativePath(solutionFolderNode.Solution.Directory, newProject.FileName);
 				ProjectService.AddProject(solutionFolderNode, newProject);

src/Main/Base/Project/Src/Gui/Pads/ProjectBrowser/ProjectBrowserControl.cs

@@ -65,7 +65,10 @@ namespace ICSharpCode.SharpDevelop.Project
 		
 		public AbstractProjectBrowserTreeNode RootNode {
 			get {
-				return treeView.Nodes[0] as AbstractProjectBrowserTreeNode;
+				if (treeView.Nodes.Count > 0)
+					return treeView.Nodes[0] as AbstractProjectBrowserTreeNode;
+				else
+					return null;
 			}
 		}
 		

src/Main/Core/Project/Src/Services/FileUtility/FileUtility.cs

@@ -552,7 +552,7 @@ namespace ICSharpCode.Core
 						ServiceManager.MessageService.InformSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e);
 						break;
 					case FileErrorPolicy.ProvideAlternative:
-						ChooseSaveErrorResult r = ServiceManager.MessageService.ChooseSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e, false);
+						ChooseSaveErrorResult r = ServiceManager.MessageService.ChooseSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e, true);
 						if (r.IsRetry) {
 							return ObservedSave(saveFileAs, fileName, message, policy);
 						} else if (r.IsIgnore) {