Add entry in tools menu for "Project Upgrade" view.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@5262 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

AddIns/ICSharpCode.SharpDevelop.addin

@@ -1613,6 +1613,11 @@
 				          shortcut = "Control|Q"
 				          class = "ICSharpCode.SharpDevelop.DefaultEditor.Commands.QuickDocumentation"/>
 			</Condition>
+			<Condition name = "SolutionOpen" action="Disable">
+				<MenuItem id = "Upgrade"
+				          label = "Project Upgrade"
+				          class = "ICSharpCode.SharpDevelop.Project.Converter.ShowUpgradeView"/>
+			</Condition>
 			
 			<MenuItem id = "LastSeparator" type = "Separator" />
 			

src/Main/Base/Project/Src/Gui/Workbench/WpfWorkbench.cs

@@ -365,6 +365,8 @@ namespace ICSharpCode.SharpDevelop.Gui
 			WorkbenchSingleton.AssertMainThread();
 			if (content == null)
 				throw new ArgumentNullException("content");
+			if (ViewContentCollection.Contains(content))
+				throw new ArgumentException("ViewContent was already shown");
 			System.Diagnostics.Debug.Assert(WorkbenchLayout != null);
 			
 			LoadViewContentMemento(content);

src/Main/Base/Project/Src/Project/Converter/UpgradeViewContent.cs

@@ -5,20 +5,22 @@
 //     <version>$Revision$</version>
 // </file>
 
-using ICSharpCode.SharpDevelop.Gui;
 using System;
 using System.Linq;
+using ICSharpCode.Core;
+using ICSharpCode.SharpDevelop.Gui;
 
 namespace ICSharpCode.SharpDevelop.Project.Converter
 {
 	/// <summary>
-	/// This view content is used.
+	/// This view content is used for upgrading or downgrading projects inside a solution.
 	/// </summary>
 	public class UpgradeViewContent : AbstractViewContent
 	{
 		public static void ShowIfRequired(Solution solution)
 		{
-			if (solution.Projects.OfType<IUpgradableProject>().Any(u => u.UpgradeDesired)) {
+			var projects = solution.Projects.OfType<IUpgradableProject>().ToList();
+			if (projects.Count > 0 && projects.All(u => u.UpgradeDesired)) {
 				Core.AnalyticsMonitorService.TrackFeature("UpgradeView opened automatically");
 				WorkbenchSingleton.Workbench.ShowView(new UpgradeViewContent(solution));
 			}
@@ -38,4 +40,16 @@ namespace ICSharpCode.SharpDevelop.Project.Converter
 			}
 		}
 	}
+	
+	public class ShowUpgradeView : AbstractMenuCommand
+	{
+		public override void Run()
+		{
+			UpgradeViewContent uvc = WorkbenchSingleton.Workbench.ViewContentCollection.OfType<UpgradeViewContent>().FirstOrDefault();
+			if (uvc != null)
+				uvc.WorkbenchWindow.SelectWindow();
+			else if (ProjectService.OpenSolution != null)
+				WorkbenchSingleton.Workbench.ShowView(new UpgradeViewContent(ProjectService.OpenSolution));
+		}
+	}
 }