reimplement Workspace architecture with a single WorkspaceModel

src/Main/Base/Project/Dom/ClassBrowser/ClassBrowserTreeView.cs

@@ -2,33 +2,38 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
-using System.Diagnostics;
-using System.Windows;
+using System.Collections.Generic;
 using System.Windows.Controls;
-using System.Windows.Input;
-using ICSharpCode.Core.Presentation;
 using ICSharpCode.TreeView;
-using ICSharpCode.SharpDevelop.Workbench;
 
 namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 {
 	public class ClassBrowserTreeView : SharpTreeView, IClassBrowserTreeView
 	{
-		ClassBrowserWorkspace currentWorkspace;
+		#region IClassBrowser implementation
+
+		public ICollection<SharpTreeNode> SpecialNodes {
+			get { return ((WorkspaceTreeNode)Root).SpecialNodes; }
+		}
+
+		public AssemblyList AssemblyList {
+			get { return ((WorkspaceTreeNode)Root).AssemblyList; }
+			set { ((WorkspaceTreeNode)Root).AssemblyList = value; }
+		}
+
+		#endregion
 		
-		public ClassBrowserWorkspace Workspace {
-			get { return currentWorkspace; }
-			set {
-				if (currentWorkspace == value)
-					return;
-				currentWorkspace = value;
-				if (currentWorkspace != null) {
-					this.Root = new WorkspaceTreeNode(currentWorkspace);
-					this.ShowRoot = currentWorkspace.LoadedAssemblies.Count > 0 || !currentWorkspace.IsAssigned;
-				} else {
-					this.Root = null;
-				}
-			}
+		public ClassBrowserTreeView()
+		{
+			WorkspaceTreeNode root = new WorkspaceTreeNode();
+			ClassBrowserTreeView instance = this;
+			root.SpecialNodes.CollectionChanged += delegate {
+				instance.ShowRoot = root.Children.Count > 1;
+			};
+			root.PropertyChanged += delegate {
+				instance.ShowRoot = root.Children.Count > 1;
+			};
+			this.Root = root;
 		}
 		
 		protected override void OnContextMenuOpening(ContextMenuEventArgs e)
@@ -40,7 +45,7 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 		}
 	}
 	
-	public interface IClassBrowserTreeView
+	public interface IClassBrowserTreeView : IClassBrowser
 	{
 		
 	}

src/Main/Base/Project/Dom/ClassBrowser/ClassBrowserWorkspace.cs

@@ -1,95 +0,0 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
-// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using ICSharpCode.Core;
-using ICSharpCode.NRefactory;
-using ICSharpCode.NRefactory.TypeSystem;
-using ICSharpCode.NRefactory.TypeSystem.Implementation;
-using ICSharpCode.SharpDevelop.Project;
-
-namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
-{
-	/// <summary>
-	/// Description of ClassBrowserWorkspace.
-	/// </summary>
-	public class ClassBrowserWorkspace
-	{
-		ISolution assignedSolution;
-		IModelCollection<IAssemblyModel> loadedAssemblies;
-		string workspaceName;
-		
-		public ClassBrowserWorkspace(ISolution assignedSolution, IEnumerable<IAssemblyModel> assemblies = null)
-			: this(assignedSolution.FileName, assemblies)
-		{
-			this.assignedSolution = assignedSolution;
-		}
-		
-		public ClassBrowserWorkspace(string workspaceName, IEnumerable<IAssemblyModel> assemblies = null)
-		{
-			this.workspaceName = workspaceName;
-			this.loadedAssemblies = new SimpleModelCollection<IAssemblyModel>(assemblies ?? EmptyList<IAssemblyModel>.Instance);
-		}
-		
-		public bool IsAssigned {
-			get { return assignedSolution != null; }
-		}
-		
-		public ISolution AssignedSolution {
-			get { return assignedSolution; }
-		}
-		
-		public string Name {
-			get { return workspaceName; }
-		}
-		
-		public IModelCollection<IAssemblyModel> LoadedAssemblies {
-			get { return loadedAssemblies; }
-		}
-	}
-	
-	public class ClassBrowserSettings
-	{
-		IAssemblyReference[] ResolveReferences(IUnresolvedAssembly asm)
-		{
-			return new IAssemblyReference[0];
-		}
-
-		IAssemblyModel[] LoadAssemblyList(string name)
-		{
-			var assemblyNames = Container.GetList<string>("AssemblyList." + name);
-			CecilLoader loader = new CecilLoader();
-			var factory = SD.GetRequiredService<IModelFactory>();
-			return assemblyNames
-				.Select(loader.LoadAssemblyFile)
-				.Select(asm => new AssemblyEntityModelContext(asm, ResolveReferences(asm)))
-				.Select(factory.CreateAssemblyModel)
-				.ToArray();
-		}
-
-		readonly Properties Container = SD.PropertyService.NestedProperties(typeof(ClassBrowserSettings).FullName);
-		
-		public ClassBrowserWorkspace LoadDefaultWorkspace()
-		{
-			return LoadWorkspace("<default>");
-		}
-		
-		public ClassBrowserWorkspace LoadWorkspace(string name)
-		{
-			return new ClassBrowserWorkspace(name, LoadAssemblyList(name));
-		}
-		
-		public ClassBrowserWorkspace LoadForSolution(ISolution solution)
-		{
-			// maybe use solution.Preferences?
-			return new ClassBrowserWorkspace(solution, LoadAssemblyList(solution.FileName));
-		}
-		
-		public void SaveWorkspace(ClassBrowserWorkspace workspace)
-		{
-			
-		}
-	}
-}

src/Main/Base/Project/Dom/ClassBrowser/IClassBrowser.cs

@@ -0,0 +1,27 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using ICSharpCode.TreeView;
+
+namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
+{
+	public interface IClassBrowser
+	{
+		ICollection<SharpTreeNode> SpecialNodes { get; }
+		AssemblyList AssemblyList { get; set; }
+	}
+	
+	public class AssemblyList
+	{
+		public string Name { get; set; }
+		public IMutableModelCollection<IAssemblyModel> Assemblies { get; set; }
+		
+		public AssemblyList()
+		{
+			Name = "<default>";
+			Assemblies = new SimpleModelCollection<IAssemblyModel>();
+		}
+	}
+}

src/Main/Base/Project/Dom/ClassBrowser/WorkspaceModel.cs

@@ -0,0 +1,48 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using ICSharpCode.TreeView;
+
+namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
+{
+	/// <summary>
+	/// Description of WorkspaceModel.
+	/// </summary>
+	public class WorkspaceModel : System.ComponentModel.INotifyPropertyChanged
+	{
+		IMutableModelCollection<SharpTreeNode> specialNodes;
+		public IMutableModelCollection<SharpTreeNode> SpecialNodes {
+			get { return specialNodes; }
+		}
+		
+		AssemblyList assemblyList;
+
+		public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
+
+		protected virtual void OnPropertyChanged(string propertyName)
+		{
+			if (PropertyChanged != null) {
+				PropertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
+			}
+		}
+
+		public AssemblyList AssemblyList {
+			get {
+				return assemblyList;
+			}
+			set {
+				if (assemblyList != value) {
+					assemblyList = value;
+					OnPropertyChanged("AssemblyList");
+				}
+			}
+		}
+		public WorkspaceModel()
+		{
+			this.specialNodes = new SimpleModelCollection<SharpTreeNode>();
+			this.AssemblyList = new AssemblyList();
+		}
+	}
+}

src/Main/Base/Project/Dom/ClassBrowser/WorkspaceTreeNode.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using ICSharpCode.TreeView;
 
 namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
@@ -12,13 +13,21 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 	/// </summary>
 	public class WorkspaceTreeNode : ModelCollectionTreeNode
 	{
-		ClassBrowserWorkspace workspace;
+		WorkspaceModel workspace;
 		
-		public WorkspaceTreeNode(ClassBrowserWorkspace workspace)
+		public IMutableModelCollection<SharpTreeNode> SpecialNodes {
+			get { return workspace.SpecialNodes; }
+		}
+
+		public AssemblyList AssemblyList {
+			get { return workspace.AssemblyList; }
+			set { workspace.AssemblyList = value; }
+		}
+		
+		public WorkspaceTreeNode()
 		{
-			if (workspace == null)
-				throw new ArgumentNullException("workspace");
-			this.workspace = workspace;
+			this.workspace = new WorkspaceModel();
+			this.workspace.SpecialNodes.CollectionChanged += SpecialNodesModelCollectionChanged;
 		}
 		
 		protected override object GetModel()
@@ -27,7 +36,7 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 		}
 		
 		protected override IModelCollection<object> ModelChildren {
-			get { return workspace.LoadedAssemblies; }
+			get { return workspace.AssemblyList.Assemblies; }
 		}
 		
 		protected override IComparer<SharpTreeNode> NodeComparer {
@@ -36,7 +45,7 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 		
 		public override object Text {
 			get {
-				return "Workspace " + workspace.Name;
+				return "Workspace " + AssemblyList.Name;
 			}
 		}
 		
@@ -53,9 +62,12 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 		
 		protected override void InsertSpecialNodes()
 		{
-			if (workspace.IsAssigned) {
-				InsertChildren(new[] { workspace.AssignedSolution });
-			}
+			Children.AddRange(workspace.SpecialNodes);
+		}
+		
+		void SpecialNodesModelCollectionChanged(IReadOnlyCollection<SharpTreeNode> removedItems, IReadOnlyCollection<SharpTreeNode> addedItems)
+		{
+			SynchronizeModelChildren();
 		}
 	}
 }

src/Main/Base/Project/Dom/IModelCollection.cs

@@ -19,23 +19,11 @@ namespace ICSharpCode.SharpDevelop.Dom
 	{
 		List<ModelCollectionChangedEventHandler<T>> _handlers = new List<ModelCollectionChangedEventHandler<T>>();
 		
-//		public static ModelCollectionChangedEvent<T> operator+(ModelCollectionChangedEvent<T> eventObject, ModelCollectionChangedEventHandler<T> handler)
-//		{
-//			eventObject._handlers.Add(handler);
-//			return eventObject;
-//		}
-		
 		public void AddHandler(ModelCollectionChangedEventHandler<T> handler)
 		{
 			_handlers.Add(handler);
 		}
 		
-//		public static ModelCollectionChangedEvent<T> operator-(ModelCollectionChangedEvent<T> eventObject, ModelCollectionChangedEventHandler<T> handler)
-//		{
-//			eventObject._handlers.Remove(handler);
-//			return eventObject;
-//		}
-		
 		public void RemoveHandler(ModelCollectionChangedEventHandler<T> handler)
 		{
 			_handlers.Remove(handler);

src/Main/Base/Project/Dom/ModelCollectionTreeNode.cs

@@ -78,12 +78,14 @@ namespace ICSharpCode.SharpDevelop.Dom
 			}
 		}
 		
-		void SynchronizeModelChildren()
+		protected void SynchronizeModelChildren()
 		{
 			HashSet<object> set = new HashSet<object>(ModelChildren);
 			Children.RemoveAll(n => !set.Contains(n.Model));
 			set.ExceptWith(Children.Select(n => n.Model));
 			InsertChildren(set);
+			if (IsSpecialNode())
+				InsertSpecialNodes();
 		}
 		
 		void ModelChildrenCollectionChanged(IReadOnlyCollection<object> removedItems, IReadOnlyCollection<object> addedItems)

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

@@ -134,6 +134,7 @@
 		     title    = "${res:MainWindow.Windows.ClassScoutLabel}"
 		     icon     = "PadIcons.ClassBrowser"
 		     class    = "ICSharpCode.SharpDevelop.Dom.ClassBrowser.ClassBrowserPad"
+		     serviceInterface = "ICSharpCode.SharpDevelop.Dom.ClassBrowser.IClassBrowser"
 		     defaultPosition = "Right" />
 		
 		<Pad id       = "SideBar"

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

@@ -86,12 +86,13 @@
     <Compile Include="Designer\TypeResolutionService.cs" />
     <Compile Include="Dom\ClassBrowser\AssemblyTreeNode.cs" />
     <Compile Include="Dom\ClassBrowser\ClassBrowserTreeView.cs" />
-    <Compile Include="Dom\ClassBrowser\ClassBrowserWorkspace.cs" />
+    <Compile Include="Dom\ClassBrowser\IClassBrowser.cs" />
     <Compile Include="Dom\ClassBrowser\MemberTreeNode.cs" />
     <Compile Include="Dom\ClassBrowser\NamespaceTreeNode.cs" />
     <Compile Include="Dom\ClassBrowser\ProjectTreeNode.cs" />
     <Compile Include="Dom\ClassBrowser\SolutionTreeNode.cs" />
     <Compile Include="Dom\ClassBrowser\TypeDefinitionTreeNode.cs" />
+    <Compile Include="Dom\ClassBrowser\WorkspaceModel.cs" />
     <Compile Include="Dom\ClassBrowser\WorkspaceTreeNode.cs" />
     <Compile Include="Dom\IAssemblyModel.cs" />
     <Compile Include="Dom\IEntityModelContext.cs" />

src/Main/Base/Project/Src/Internal/Doozers/PadDescriptor.cs

@@ -37,6 +37,9 @@ namespace ICSharpCode.SharpDevelop
 		AddIn addIn;
 		Type padType;
 		
+		string serviceInterfaceName;
+		Type serviceInterface;
+		
 		IPadContent padContent;
 		bool        padContentCreated;
 		
@@ -53,6 +56,7 @@ namespace ICSharpCode.SharpDevelop
 			icon = codon.Properties["icon"];
 			title = codon.Properties["title"];
 			@class = codon.Properties["class"];
+			serviceInterfaceName = codon.Properties["serviceInterface"];
 			if (!string.IsNullOrEmpty(codon.Properties["defaultPosition"])) {
 				DefaultPosition = (DefaultPadPositions)Enum.Parse(typeof(DefaultPadPositions), codon.Properties["defaultPosition"]);
 			}
@@ -75,6 +79,7 @@ namespace ICSharpCode.SharpDevelop
 			this.icon = icon;
 			this.category = "none";
 			this.shortcut = "";
+			this.serviceInterface = null;
 		}
 		
 		/// <summary>
@@ -134,6 +139,18 @@ namespace ICSharpCode.SharpDevelop
 			}
 		}
 		
+		/// <summary>
+		/// Gets the type of the service interface.
+		/// </summary>
+		public Type ServiceInterface {
+			get {
+				if (serviceInterface == null && addIn != null && !string.IsNullOrEmpty(serviceInterfaceName)) {
+					serviceInterface = addIn.FindType(serviceInterfaceName);
+				}
+				return serviceInterface;
+			}
+		}
+		
 		/// <summary>
 		/// Gets/sets the default position of the pad.
 		/// </summary>

src/Main/SharpDevelop/Dom/ClassBrowser/ClassBrowserPad.cs

@@ -2,6 +2,8 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
+using System.Linq;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.Windows.Controls;
 using ICSharpCode.Core.Presentation;
@@ -11,11 +13,23 @@ using ICSharpCode.SharpDevelop.Workbench;
 
 namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 {
-	class ClassBrowserPad : AbstractPadContent
+	class ClassBrowserPad : AbstractPadContent, IClassBrowser
 	{
+		#region IClassBrowser implementation
+
+		public ICollection<SharpTreeNode> SpecialNodes {
+			get { return treeView.SpecialNodes; }
+		}
+
+		public AssemblyList AssemblyList {
+			get { return treeView.AssemblyList; }
+			set { treeView.AssemblyList = value; }
+		}
+
+		#endregion
+
 		IProjectService projectService;
 		ClassBrowserTreeView treeView;
-		ClassBrowserSettings settings;
 		DockPanel panel;
 		ToolBar toolBar;
 
@@ -27,8 +41,6 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 		public ClassBrowserPad(IProjectService projectService)
 		{
 			this.projectService = projectService;
-			this.settings = new ClassBrowserSettings();
-			
 			panel = new DockPanel();
 			treeView = new ClassBrowserTreeView(); // treeView must be created first because it's used by CreateToolBar
 
@@ -39,7 +51,6 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 			panel.Children.Add(treeView);
 			
 			//treeView.ContextMenu = CreateContextMenu("/SharpDevelop/Pads/UnitTestsPad/ContextMenu");
-			
 			projectService.CurrentSolutionChanged += ProjectServiceCurrentSolutionChanged;
 			ProjectServiceCurrentSolutionChanged(null, null);
 		}
@@ -60,11 +71,10 @@ namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 		
 		void ProjectServiceCurrentSolutionChanged(object sender, EventArgs e)
 		{
-			if (projectService.CurrentSolution == null) {
-				treeView.Workspace = settings.LoadDefaultWorkspace();
-			} else {
-				treeView.Workspace = settings.LoadForSolution(projectService.CurrentSolution);
-			}
+			foreach (var node in treeView.SpecialNodes.OfType<SolutionTreeNode>().ToArray())
+				treeView.SpecialNodes.Remove(node);
+			if (projectService.CurrentSolution != null)
+				treeView.SpecialNodes.Add(new SolutionTreeNode(projectService.CurrentSolution));
 		}
 		
 		/// <summary>

src/Main/SharpDevelop/Workbench/WpfWorkbench.cs

@@ -432,6 +432,9 @@ namespace ICSharpCode.SharpDevelop.Workbench
 				throw new ArgumentException("Pad is already loaded");
 			
 			padDescriptorCollection.Add(content);
+			if (content.ServiceInterface != null) {
+				SD.Services.AddService(content.ServiceInterface, delegate { return content.PadContent; });
+			}
 			
 			if (WorkbenchLayout != null) {
 				WorkbenchLayout.ShowPad(content);