Fixed moving linked files in the project pad and other minor bugs.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@783 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/FormDesigner/Project/Src/FormDesigner/Services/DesignerResourceService.cs

@@ -168,19 +168,9 @@ namespace ICSharpCode.FormDesigner.Services
 		
 		IProject GetProject()
 		{
-			if (_project != null)
-				return _project;
-			if (ProjectService.OpenSolution != null) {
-				LoggingService.Warn(FileName);
-				foreach (IProject project in ProjectService.OpenSolution.Projects) {
-					if (project.IsFileInProject(FileName)) {
-						LoggingService.Warn("use project " + project.Name);
-						_project = project;
-						return project;
-					}
-				}
-			}
-			return null;
+			if (_project == null)
+				_project = ProjectService.GetProject(FileName);
+			return _project;
 		}
 		
 		#region System.ComponentModel.Design.IResourceService interface implementation

src/AddIns/Misc/NAntAddIn/Project/Src/Gui/NAntPadContent.cs

@@ -211,38 +211,12 @@ namespace ICSharpCode.NAntAddIn.Gui
 		
 		void AddBuildFile(string fileName)
 		{
-			IProject project = FindProjectContainingFile(fileName);
+			IProject project = ProjectService.GetProject(fileName);
 			if (project != null) {
 				treeView.AddBuildFile(project.Name, fileName);
 			}
 		}
 		
-		IProject FindProjectContainingFile(string fileName)
-		{
-			// Try selected project first.
-			IProject project = ProjectService.CurrentProject;
-			if (project != null) {
-				if (!project.IsFileInProject(fileName)) {
-					
-					// Try all project's in the solution.
-					project = FindProjectContainingFile(fileName, ProjectService.OpenSolution);
-				}
-			}
-			
-			return project;
-		}
-		
-		IProject FindProjectContainingFile(string fileName, Solution solution)
-		{
-			foreach (IProject project in solution.Projects) {
-				if (project.IsFileInProject(fileName)) {
-					return project;
-				}
-			}			
-			return null;
-		}
-
-
 		void ProjectItemAdded(object sender, ProjectItemEventArgs e)
 		{
 			LoggingService.Debug("ProjectItemAdded.");

src/Libraries/ICSharpCode.TextEditor/Project/Resources/Boo.xshd

@@ -271,7 +271,7 @@
 				<Key word="mixin"/>
 				<Key word="callable"/>
 				<Key word="do" />
-				<Key word="of" >
+				<Key word="of" />
 			</KeyWords>
 
 		</RuleSet>

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

@@ -107,7 +107,7 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 	
 	public class IncludeFileInProject : AbstractMenuCommand
 	{
-		public static void IncludeFileNode(FileNode fileNode)
+		public static FileProjectItem IncludeFileNode(FileNode fileNode)
 		{
 			if (fileNode.Parent is FileNode) {
 				if (((FileNode)fileNode.Parent).FileNodeStatus != FileNodeStatus.InProject) {
@@ -134,6 +134,7 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 				((ExtTreeNode)fileNode.Parent).UpdateVisibility();
 			}
 			fileNode.Project.Save();
+			return newItem;
 		}
 		
 		public static ItemType GetDefaultItemType(IProject project, string fileName)

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

@@ -38,16 +38,18 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 			return 0;
 		}
 		
-		public static void CopyDirectory(string directoryName, DirectoryNode node)
+		public static void CopyDirectory(string directoryName, DirectoryNode node, bool includeInProject)
 		{
 			string copiedFileName = Path.Combine(node.Directory, Path.GetFileName(directoryName));
 			if (!FileUtility.IsEqualFileName(directoryName, copiedFileName)) {
 				FileUtility.DeepCopy(directoryName, copiedFileName, true);
 				DirectoryNode newNode = new DirectoryNode(copiedFileName);
 				newNode.AddTo(node);
+				if (includeInProject) {
+					IncludeFileInProject.IncludeDirectoryNode(newNode, false);
+				}
 				newNode.Expanding();
-				IncludeFileInProject.IncludeDirectoryNode(newNode, true);
-			} else {
+			} else if (includeInProject) {
 				foreach (TreeNode childNode in node.Nodes) {
 					if (childNode is DirectoryNode) {
 						DirectoryNode directoryNode = (DirectoryNode)childNode;
@@ -59,7 +61,7 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 			}
 		}
 		
-		public static void CopyFile(string fileName, DirectoryNode node, bool includeInProject)
+		public static FileProjectItem CopyFile(string fileName, DirectoryNode node, bool includeInProject)
 		{
 			string copiedFileName = Path.Combine(node.Directory, Path.GetFileName(fileName));
 			if (!FileUtility.IsEqualFileName(fileName, copiedFileName)) {
@@ -67,7 +69,7 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 				FileNode newNode = new FileNode(copiedFileName);
 				newNode.AddTo(node);
 				if (includeInProject) {
-					IncludeFileInProject.IncludeFileNode(newNode);
+					return IncludeFileInProject.IncludeFileNode(newNode);
 				}
 			} else if (includeInProject) {
 				FileNode fileNode;
@@ -75,16 +77,15 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 					if (childNode is FileNode) {
 						fileNode = (FileNode)childNode;
 						if (FileUtility.IsEqualFileName(fileNode.FileName, copiedFileName)) {
-							IncludeFileInProject.IncludeFileNode(fileNode);
-							return;
+							return IncludeFileInProject.IncludeFileNode(fileNode);
 						}
 					}
 				}
 				fileNode = new FileNode(fileName);
 				fileNode.AddTo(node);
-				IncludeFileInProject.IncludeFileNode(fileNode);
-				
+				return IncludeFileInProject.IncludeFileNode(fileNode);
 			}
+			return null;
 		}
 		
 		public override void Run()
@@ -124,7 +125,7 @@ namespace ICSharpCode.SharpDevelop.Project.Commands
 								FileNode fileNode = new FileNode(relFileName, FileNodeStatus.InProject);
 								FileProjectItem fileProjectItem = new FileProjectItem(node.Project, IncludeFileInProject.GetDefaultItemType(node.Project, fileName));
 								fileProjectItem.Include = relFileName;
-								fileProjectItem.Properties.Set("Link", Path.GetFileName(fileName));
+								fileProjectItem.Properties.Set("Link", Path.Combine(node.RelativePath, Path.GetFileName(fileName)));
 								fileNode.ProjectItem = fileProjectItem;
 								fileNode.AddTo(node);
 								ProjectService.AddProjectItem(node.Project, fileProjectItem);

src/Main/Base/Project/Src/Gui/Pads/ProjectBrowser/TreeNodes/DirectoryNode.cs

@@ -11,12 +11,12 @@ using System.Collections.Generic;
 using System.Drawing;
 using System.IO;
 using System.Windows.Forms;
+using ICSharpCode.SharpDevelop.Project.Commands;
 
 using ICSharpCode.Core;
 
 namespace ICSharpCode.SharpDevelop.Project
 {
-	[Serializable]
 	public class FileOperationClipboardObject : System.MarshalByRefObject
 	{
 		string fileName;
@@ -36,6 +36,23 @@ namespace ICSharpCode.SharpDevelop.Project
 			this.fileName = fileName;
 			this.performMove = performMove;
 		}
+		
+		public static IDataObject CreateDataObject(FileNode node, bool performMove)
+		{
+			return new DataObject(typeof(FileNode).ToString(), new FileOperationClipboardObject(node.FileName, performMove));
+		}
+		
+		public static IDataObject CreateDataObject(SolutionItemNode node, bool performMove)
+		{
+			return new DataObject(typeof(SolutionItemNode).ToString(),
+			                      new FileOperationClipboardObject(node.FileName, performMove));
+		}
+		
+		public static IDataObject CreateDataObject(DirectoryNode node, bool performMove)
+		{
+			return new DataObject(typeof(DirectoryNode).ToString(),
+			                      new FileOperationClipboardObject(node.Directory, performMove));
+		}
 	}
 	
 	public enum SpecialFolder {
@@ -213,6 +230,23 @@ namespace ICSharpCode.SharpDevelop.Project
 			SetIcon();
 		}
 		
+		void RecreateSubNodes()
+		{
+			if (autoClearNodes) {
+				Nodes.Clear();
+			} else {
+				List<TreeNode> removedNodes = new List<TreeNode>();
+				foreach (TreeNode node in Nodes) {
+					if (node is FileNode || node is DirectoryNode)
+						removedNodes.Add(node);
+				}
+				foreach (TreeNode node in removedNodes) {
+					Nodes.Remove(node);
+				}
+			}
+			Initialize();
+		}
+		
 		protected override void Initialize()
 		{
 			if (removeMe != null) {
@@ -458,31 +492,27 @@ namespace ICSharpCode.SharpDevelop.Project
 				foreach (string fileName in files) {
 					if (System.IO.Directory.Exists(fileName)) {
 						if (!FileUtility.IsBaseDirectory(fileName, Directory)) {
-							ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyDirectory(fileName, this);
+							CopyDirectoryHere(fileName, false);
 						}
 					} else {
-						ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyFile(fileName, this, true);
+						CopyFileHere(fileName, false);
 					}
 				}
 			} else if (dataObject.GetDataPresent(typeof(FileNode))) {
 				FileOperationClipboardObject clipboardObject = (FileOperationClipboardObject)dataObject.GetData(typeof(FileNode).ToString());
 				
 				if (File.Exists(clipboardObject.FileName)) {
-					ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyFile(clipboardObject.FileName, this, true);
+					CopyFileHere(clipboardObject.FileName, clipboardObject.PerformMove);
 					if (clipboardObject.PerformMove) {
-						string copiedFileName = Path.Combine(Directory, Path.GetFileName(clipboardObject.FileName));
-						if (!FileUtility.IsEqualFileName(clipboardObject.FileName, copiedFileName)) {
-							FileService.RemoveFile(clipboardObject.FileName, false);
-						}
+						dataObject.SetData(null);
 					}
 				}
 			} else if (dataObject.GetDataPresent(typeof(DirectoryNode))) {
 				FileOperationClipboardObject clipboardObject = (FileOperationClipboardObject)dataObject.GetData(typeof(DirectoryNode).ToString());
 				
 				if (System.IO.Directory.Exists(clipboardObject.FileName)) {
-					ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyDirectory(clipboardObject.FileName, this);
+					CopyDirectoryHere(clipboardObject.FileName, clipboardObject.PerformMove);
 					if (clipboardObject.PerformMove) {
-						FileService.RemoveFile(clipboardObject.FileName, true);
 						dataObject.SetData(null);
 					}
 				}
@@ -490,6 +520,87 @@ namespace ICSharpCode.SharpDevelop.Project
 			ProjectService.SaveSolution();
 		}
 		
+		public void CopyDirectoryHere(string fileName, bool performMove)
+		{
+			AddExistingItemsToProject.CopyDirectory(fileName, this, true);
+			if (performMove) {
+				FileService.RemoveFile(fileName, true);
+			}
+		}
+		
+		public void CopyDirectoryHere(DirectoryNode node, bool performMove)
+		{
+			if (node.FileNodeStatus == FileNodeStatus.None) {
+				AddExistingItemsToProject.CopyDirectory(node.Directory, this, true);
+				if (performMove) {
+					FileService.RemoveFile(node.Directory, true);
+				}
+			} else {
+				CopyDirectoryHere(node.Directory, performMove);
+			}
+		}
+		
+		public void CopyFileHere(string fileName, bool performMove)
+		{
+			string shortFileName = Path.GetFileName(fileName);
+			string copiedFileName = Path.Combine(Directory, shortFileName);
+			if (FileUtility.IsEqualFileName(fileName, copiedFileName))
+				return;
+			
+			FileProjectItem newItem = AddExistingItemsToProject.CopyFile(fileName, this, true);
+			IProject sourceProject = Solution.FindProjectContainingFile(fileName);
+			if (sourceProject != null) {
+				string sourceDirectory = Path.GetDirectoryName(fileName);
+				bool dependendElementsCopied = false;
+				foreach (ProjectItem item in sourceProject.Items.ToArray()) {
+					FileProjectItem fileItem = item as FileProjectItem;
+					if (fileItem == null)
+						continue;
+					if (newItem != null && FileUtility.IsEqualFileName(fileItem.FileName, fileName)) {
+						fileItem.CopyExtraPropertiesTo(newItem);
+					}
+					if (!string.Equals(fileItem.DependentUpon, shortFileName, StringComparison.OrdinalIgnoreCase))
+						continue;
+					string itemPath = Path.Combine(sourceProject.Directory, fileItem.VirtualName);
+					if (!FileUtility.IsEqualFileName(sourceDirectory, Path.GetDirectoryName(itemPath)))
+						continue;
+					// this file is dependend on the file being copied/moved: copy it, too
+					CopyFileHere(itemPath, performMove);
+					dependendElementsCopied = true;
+				}
+				if (dependendElementsCopied)
+					RecreateSubNodes();
+			}
+			if (performMove) {
+				FileService.RemoveFile(fileName, false);
+			}
+		}
+		
+		public void CopyFileHere(FileNode node, bool performMove)
+		{
+			if (node.FileNodeStatus == FileNodeStatus.None) {
+				AddExistingItemsToProject.CopyFile(node.FileName, this, false);
+				if (performMove) {
+					FileService.RemoveFile(node.FileName, false);
+				}
+			} else if (node.IsLink) {
+				string relFileName = FileUtility.GetRelativePath(Project.Directory, node.FileName);
+				FileNode fileNode = new FileNode(relFileName, FileNodeStatus.InProject);
+				FileProjectItem fileProjectItem = new FileProjectItem(Project, IncludeFileInProject.GetDefaultItemType(Project, node.FileName));
+				fileProjectItem.Include = relFileName;
+				fileProjectItem.Properties.Set("Link", Path.Combine(RelativePath, Path.GetFileName(node.FileName)));
+				fileNode.ProjectItem = fileProjectItem;
+				fileNode.AddTo(this);
+				ProjectService.AddProjectItem(Project, fileProjectItem);
+				if (performMove) {
+					ProjectService.RemoveProjectItem(node.Project, node.ProjectItem);
+					node.Remove();
+				}
+			} else {
+				CopyFileHere(node.FileName, performMove);
+			}
+		}
+		
 		public override bool EnableCopy {
 			get {
 				return true;
@@ -497,7 +608,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		}
 		public override void Copy()
 		{
-			ClipboardWrapper.SetDataObject(new DataObject(typeof(DirectoryNode).ToString(), new FileOperationClipboardObject(Directory, false)));
+			ClipboardWrapper.SetDataObject(FileOperationClipboardObject.CreateDataObject(this, false));
 		}
 		
 		public override bool EnableCut {
@@ -509,7 +620,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		public override void Cut()
 		{
 			DoPerformCut = true;
-			ClipboardWrapper.SetDataObject(new DataObject(typeof(DirectoryNode).ToString(), new FileOperationClipboardObject(Directory, true)));
+			ClipboardWrapper.SetDataObject(FileOperationClipboardObject.CreateDataObject(this, true));
 		}
 		#endregion
 		
@@ -556,29 +667,23 @@ namespace ICSharpCode.SharpDevelop.Project
 			PerformInitialization();
 			Expand();
 			try {
-				if (dataObject.GetDataPresent(DataFormats.FileDrop)) {
+				if (dataObject.GetDataPresent(typeof(FileNode))) {
+					FileNode fileNode = (FileNode)dataObject.GetData(typeof(FileNode));
+					CopyFileHere(fileNode, effect == DragDropEffects.Move);
+				} else if (dataObject.GetDataPresent(typeof(DirectoryNode))) {
+					DirectoryNode directoryNode = (DirectoryNode)dataObject.GetData(typeof(DirectoryNode));
+					CopyDirectoryHere(directoryNode, effect == DragDropEffects.Move);
+				} else if (dataObject.GetDataPresent(DataFormats.FileDrop)) {
 					string[] files = (string[])dataObject.GetData(DataFormats.FileDrop);
 					foreach (string fileName in files) {
 						if (System.IO.Directory.Exists(fileName)) {
 							if (!FileUtility.IsBaseDirectory(fileName, Directory)) {
-								ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyDirectory(fileName, this);
+								CopyDirectoryHere(fileName, false);
 							}
 						} else {
-							ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyFile(fileName, this, true);
+							CopyFileHere(fileName, false);
 						}
 					}
-				} else if (dataObject.GetDataPresent(typeof(FileNode))) {
-					FileNode fileNode = (FileNode)dataObject.GetData(typeof(FileNode));
-					ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyFile(fileNode.FileName, this, fileNode.FileNodeStatus != FileNodeStatus.None);
-					if (effect == DragDropEffects.Move) {
-						FileService.RemoveFile(fileNode.FileName, false);
-					}
-				} else if (dataObject.GetDataPresent(typeof(DirectoryNode))) {
-					DirectoryNode directoryNode = (DirectoryNode)dataObject.GetData(typeof(DirectoryNode));
-					ICSharpCode.SharpDevelop.Project.Commands.AddExistingItemsToProject.CopyDirectory(directoryNode.Directory, this);
-					if (effect == DragDropEffects.Move) {
-						FileService.RemoveFile(directoryNode.Directory, true);
-					}
 				}
 				
 				ProjectService.SaveSolution();

src/Main/Base/Project/Src/Gui/Pads/ProjectBrowser/TreeNodes/FileNode.cs

@@ -66,6 +66,11 @@ namespace ICSharpCode.SharpDevelop.Project
 				}
 			}
 		}
+		public bool IsLink {
+			get {
+				return projectItem is FileProjectItem && (projectItem as FileProjectItem).IsLink;
+			}
+		}
 		void SetIcon()
 		{
 			switch (fileNodeStatus) {
@@ -73,7 +78,7 @@ namespace ICSharpCode.SharpDevelop.Project
 					SetIcon("ProjectBrowser.GhostFile");
 					break;
 				case FileNodeStatus.InProject:
-					if (projectItem is FileProjectItem && (projectItem as FileProjectItem).IsLink)
+					if (IsLink)
 						SetIcon("ProjectBrowser.CodeBehind");
 					else
 						SetIcon(IconService.GetImageForFile(FileName));
@@ -198,7 +203,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		
 		public override void Copy()
 		{
-			ClipboardWrapper.SetDataObject(new DataObject(typeof(FileNode).ToString(), new FileOperationClipboardObject(FileName, false)));
+			ClipboardWrapper.SetDataObject(FileOperationClipboardObject.CreateDataObject(this, false));
 		}
 		
 		public override bool EnableCut {
@@ -210,7 +215,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		public override void Cut()
 		{
 			DoPerformCut = true;
-			ClipboardWrapper.SetDataObject(new DataObject(typeof(FileNode).ToString(), new FileOperationClipboardObject(FileName, true)));
+			ClipboardWrapper.SetDataObject(FileOperationClipboardObject.CreateDataObject(this, true));
 		}
 		
 		

src/Main/Base/Project/Src/Gui/Pads/ProjectBrowser/TreeNodes/SolutionItemNode.cs

@@ -101,7 +101,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		public override void Copy()
 		{
 			DoPerformCut = true;
-			ClipboardWrapper.SetDataObject(new DataObject(typeof(SolutionItemNode).ToString(), new FileOperationClipboardObject(Path.Combine(Solution.Directory, item.Name), false)));
+			ClipboardWrapper.SetDataObject(FileOperationClipboardObject.CreateDataObject(this, false));
 		}
 		
 		public override bool EnableCut {
@@ -113,7 +113,7 @@ namespace ICSharpCode.SharpDevelop.Project
 		public override void Cut()
 		{
 			DoPerformCut = true;
-			ClipboardWrapper.SetDataObject(new DataObject(typeof(SolutionItemNode).ToString(), new FileOperationClipboardObject(Path.Combine(Solution.Directory, item.Name), true)));
+			ClipboardWrapper.SetDataObject(FileOperationClipboardObject.CreateDataObject(this, true));
 		}
 		#endregion
 		

src/Main/Base/Project/Src/Project/Items/ProjectItem.cs

@@ -75,6 +75,13 @@ namespace ICSharpCode.SharpDevelop.Project
 			}
 		}
 		
+		public virtual void CopyExtraPropertiesTo(ProjectItem item)
+		{
+			string newInclude = item.Include;
+			item.Properties.Merge(this.Properties);
+			item.Include = newInclude;
+		}
+		
 		[Browsable(false)]
 		public PropertyGroup Properties {
 			get {
@@ -148,7 +155,7 @@ namespace ICSharpCode.SharpDevelop.Project
 			}
 			while (reader.Read()) {
 				switch (reader.NodeType) {
-					 case XmlNodeType.EndElement:
+					case XmlNodeType.EndElement:
 						if (reader.LocalName == "ItemGroup") {
 							return;
 						}

src/Main/Base/Project/Src/Project/Solution/Solution.cs

@@ -28,17 +28,27 @@ namespace ICSharpCode.SharpDevelop.Project
 		
 		string fileName = String.Empty;
 		
-		public class ProjectEnumerator {
-			Solution solution;
-			public ProjectEnumerator(Solution solution)
-			{
-				this.solution = solution;
+		public IProject FindProjectContainingFile(string fileName)
+		{
+			IProject currentProject = ProjectService.CurrentProject;
+			if (currentProject != null && currentProject.IsFileInProject(fileName))
+				return currentProject;
+			
+			// Try all project's in the solution.
+			foreach (IProject project in Projects) {
+				if (project.IsFileInProject(fileName)) {
+					return project;
+				}
 			}
-			public IEnumerator<IProject> GetEnumerator()
-			{
+			return null;
+		}
+		
+		[Browsable(false)]
+		public IEnumerable<IProject> Projects {
+			get {
 				Stack<ISolutionFolder> stack = new Stack<ISolutionFolder>();
 				
-				foreach (ISolutionFolder solutionFolder in solution.Folders) {
+				foreach (ISolutionFolder solutionFolder in Folders) {
 					stack.Push(solutionFolder);
 				}
 				
@@ -58,26 +68,13 @@ namespace ICSharpCode.SharpDevelop.Project
 				}
 			}
 		}
-		ProjectEnumerator projectEnumerator;
+		
 		[Browsable(false)]
-		public ProjectEnumerator Projects {
+		public IEnumerable<ISolutionFolderContainer> SolutionFolderContainers {
 			get {
-				return projectEnumerator;
-			}
-		}
-		
-		
-		public class SolutionFolderContainerEnumerator {
-			Solution solution;
-			public SolutionFolderContainerEnumerator(Solution solution)
-			{
-				this.solution = solution;
-			}
-			public IEnumerator<ISolutionFolderContainer> GetEnumerator()
-			{
 				Stack<ISolutionFolder> stack = new Stack<ISolutionFolder>();
 				
-				foreach (ISolutionFolder solutionFolder in solution.Folders) {
+				foreach (ISolutionFolder solutionFolder in Folders) {
 					stack.Push(solutionFolder);
 				}
 				
@@ -94,25 +91,13 @@ namespace ICSharpCode.SharpDevelop.Project
 				}
 			}
 		}
-		SolutionFolderContainerEnumerator solutionFolderContainerEnumerator;
+
 		[Browsable(false)]
-		public SolutionFolderContainerEnumerator SolutionFolderContainers {
+		public IEnumerable<ISolutionFolder> SolutionFolders {
 			get {
-				return solutionFolderContainerEnumerator;
-			}
-		}
-		
-		public class SolutionFolderEnumerator {
-			Solution solution;
-			public SolutionFolderEnumerator(Solution solution)
-			{
-				this.solution = solution;
-			}
-			public IEnumerator<ISolutionFolder> GetEnumerator()
-			{
 				Stack<ISolutionFolder> stack = new Stack<ISolutionFolder>();
 				
-				foreach (ISolutionFolder solutionFolder in solution.Folders) {
+				foreach (ISolutionFolder solutionFolder in Folders) {
 					stack.Push(solutionFolder);
 				}
 				
@@ -130,13 +115,6 @@ namespace ICSharpCode.SharpDevelop.Project
 				}
 			}
 		}
-		SolutionFolderEnumerator solutionFolderEnumerator;
-		[Browsable(false)]
-		public SolutionFolderEnumerator SolutionFolders {
-			get {
-				return solutionFolderEnumerator;
-			}
-		}
 		
 		[Browsable(false)]
 		public IProject StartupProject {
@@ -220,9 +198,6 @@ namespace ICSharpCode.SharpDevelop.Project
 		public Solution()
 		{
 			preferences = new SolutionPreferences(this);
-			solutionFolderEnumerator          = new SolutionFolderEnumerator(this);
-			solutionFolderContainerEnumerator = new SolutionFolderContainerEnumerator(this);
-			projectEnumerator                 = new ProjectEnumerator(this);
 		}
 		
 		public ISolutionFolder GetSolutionFolder(string guid)

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

@@ -391,10 +391,10 @@ namespace ICSharpCode.Core
 					string file = WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ViewContent.FileName
 						?? WorkbenchSingleton.Workbench.ActiveWorkbenchWindow.ViewContent.UntitledName;
 					if (file != null) {
-						LanguageProperties language = GetParser(file).Language;
-						if (language != null) {
-							defaultProjectContent.Language = language;
-							defaultProjectContent.DefaultImports = language.CreateDefaultImports(defaultProjectContent);
+						IParser parser = GetParser(file);
+						if (parser != null && parser.Language != null) {
+							defaultProjectContent.Language = parser.Language;
+							defaultProjectContent.DefaultImports = parser.Language.CreateDefaultImports(defaultProjectContent);
 						}
 					}
 				}
@@ -417,12 +417,9 @@ namespace ICSharpCode.Core
 			
 			if (fileContent == null) {
 				if (ProjectService.OpenSolution != null) {
-					foreach (IProject project in ProjectService.OpenSolution.Projects) {
-						if (project.IsFileInProject(fileName)) {
-							fileContent = project.GetParseableFileContent(fileName);
-							break;
-						}
-					}
+					IProject project = ProjectService.OpenSolution.FindProjectContainingFile(fileName);
+					if (project != null)
+						fileContent = project.GetParseableFileContent(fileName);
 				}
 			}
 			try {

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

@@ -39,13 +39,10 @@ namespace ICSharpCode.SharpDevelop.Project
 		
 		public static IProject GetProject(string filename)
 		{
-			filename = Path.GetFullPath(filename).ToLower();
-			foreach (IProject project in OpenSolution.Projects) {
-				if (FileUtility.IsEqualFileName(project.FileName, filename)) {
-					return project;
-				}
-			}
-			return null;
+			if (openSolution == null)
+				return null;
+			else
+				return openSolution.FindProjectContainingFile(filename);
 		}
 		
 		static bool initialized;
@@ -168,12 +165,7 @@ namespace ICSharpCode.SharpDevelop.Project
 			if (fileName == null) {
 				return;
 			}
-			foreach (IProject project in OpenSolution.Projects) {
-				if (project.IsFileInProject(fileName)) {
-					CurrentProject = project;
-					break;
-				}
-			}
+			CurrentProject = GetProject(fileName) ?? CurrentProject;
 		}
 		
 		/// <summary>