Variables in Local Variables pad are expandable again.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@755 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Pads/LocalVarPad.cs

@@ -90,28 +90,29 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 		{
 			debuggerCore = debugger.DebuggerCore;
 			
-			debuggerCore.LocalVariables.VariableAdded += delegate(object sender, VariableEventArgs e) {
-				AddVariable(e.Variable);
+			localVarList.BeginUpdate();
+			AddVariableCollectionToTree(debuggerCore.LocalVariables, localVarList.Items);
+			localVarList.EndUpdate();
+		}
+		
+		public static void AddVariableCollectionToTree(VariableCollection varCollection, TreeListViewItemCollection tree)
+		{
+			varCollection.VariableAdded += delegate(object sender, VariableEventArgs e) {
+				AddVariableToTree(e.Variable, tree);
 			};
 			
-			localVarList.BeginUpdate();
-			foreach(Variable v in debuggerCore.LocalVariables) {
-				AddVariable(v);
+			foreach(Variable variable in varCollection) {
+				AddVariableToTree(variable, tree);
 			}
-			localVarList.EndUpdate();
 		}
 		
-		void AddVariable(Variable variableToAdd)
+		public static void AddVariableToTree(Variable variableToAdd, TreeListViewItemCollection tree)
 		{
 			if (variableToAdd.Name.StartsWith("CS$")) return;
 			
 			TreeListViewDebuggerItem newItem = new TreeListViewDebuggerItem(variableToAdd);
 			
-			debuggerCore.LocalVariables.VariableRemoved += delegate(object sender, VariableEventArgs removedArgs) {
-				if (variableToAdd == removedArgs.Variable) newItem.Remove();
-			};
-			
-			localVarList.Items.Add(newItem);
+			tree.Add(newItem);
 		}
 		
 		public override void RedrawContent()

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Pads/TreeListViewDebuggerItem.cs

@@ -16,7 +16,7 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 	public class TreeListViewDebuggerItem: TreeListViewItem
 	{
 		Variable variable;
-		bool baseClassItemAdded;
+		bool populated = false;
 		
 		public Variable Variable {
 			get {
@@ -49,6 +49,8 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 				Update();
 			};
 			
+			variable.ValueRemovedFromCollection += delegate { this.Remove(); };
+			
 			SubItems.Add("");
 			SubItems.Add("");
 			
@@ -57,9 +59,12 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 		
 		public void Update()
 		{
-			this.SubItems[0].Text = Variable.Name;
-			this.SubItems[1].Text = Variable.Value.AsString;
-			this.SubItems[2].Text = Variable.Value.Type;
+			if (this.SubItems[0].Text != Variable.Name)
+				this.SubItems[0].Text = Variable.Name;
+			if (this.SubItems[1].Text != Variable.Value.AsString)
+				this.SubItems[1].Text = Variable.Value.AsString;
+			if (this.SubItems[2].Text != Variable.Value.Type)
+				this.SubItems[2].Text = Variable.Value.Type;
 			
 			if (variable.Value is ObjectValue) {
 				this.ImageIndex = 0; // Class
@@ -69,37 +74,40 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 				this.ImageIndex = 1; // Field
 			}
 			
-			if (!baseClassItemAdded) {
-				TryToAddBaseClassItem();
-				baseClassItemAdded = true;
+			if (IsExpanded) {
+				variable.SubVariables.Update();
+			} else {
+				// Show plus sign
+				if (variable.Value.MayHaveSubVariables && Items.Count == 0) {
+					TreeListViewItem dummy = new TreeListViewItem();
+					this.AfterExpand += delegate { dummy.Remove(); };
+					Items.Add(dummy);
+				}
 			}
-			
-//			if (IsExpanded) {
-//				UpdateSubVariables();
-//			} else {
-//				if (variable.Value.MayHaveSubVariables) {
-//					Items.Add(new PlaceHolderItem()); // Show plus icon
-//				}
-//			}
 		}
 		
 		public void BeforeExpand()
 		{
-			// Do not sort names of array items
-			if (variable.Value is ArrayValue) {
-				this.Items.SortOrder = SortOrder.None;
+			if (populated) {
+				variable.SubVariables.Update();
 			} else {
-				this.Items.SortOrder = SortOrder.Ascending;
+				Populate();
+				populated = true;
 			}
 		}
 		
-		void TryToAddBaseClassItem()
+		public void Populate()
 		{
-			ObjectValue objectValue = variable.Value as ObjectValue;
-			if (objectValue != null && objectValue.HasBaseClass && objectValue.BaseClass.Type != "System.Object") {
-				Variable baseClassVar = VariableFactory.CreateVariable(objectValue.BaseClass, "<Base class>");
-				Items.Add(new TreeListViewDebuggerItem(baseClassVar));
+			Items.Clear();
+			
+			// Do not sort names of array items
+			if (variable.Value is ArrayValue) {
+				this.Items.SortOrder = SortOrder.None;
+			} else {
+				this.Items.SortOrder = SortOrder.Ascending;
 			}
+			
+			LocalVarPad.AddVariableCollectionToTree(variable.SubVariables, this.Items);
 		}
 		
 	}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/ObjectValue.cs

@@ -71,6 +71,10 @@ namespace Debugger
 		
 		public override IEnumerable<Variable> SubVariables {
 			get {
+				if (HasBaseClass) {
+					yield return BaseClassVariable;
+				}
+				
 				// Current frame is necessary to resolve context specific static values (eg. ThreadStatic)
 				ICorDebugFrame curFrame;
 				if (debugger.CurrentThread == null || debugger.CurrentThread.LastFunction == null || debugger.CurrentThread.LastFunction.CorILFrame == null) {
@@ -102,6 +106,16 @@ namespace Debugger
 			}
 		}
 		
+		public Variable BaseClassVariable {
+			get {
+				if (HasBaseClass) {
+					return VariableFactory.CreateVariable(this.BaseClass, "<Base class>");
+				} else {
+					return null;
+				}
+			}
+		}
+		
 		public unsafe ObjectValue BaseClass {
 			get	{
 				if (baseClass == null) baseClass = GetBaseClass();

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/Variable.cs

@@ -18,6 +18,7 @@ namespace Debugger
 		VariableCollection subVariables;
 		
 		public event EventHandler<VariableEventArgs> ValueChanged;
+		public event EventHandler<VariableCollectionEventArgs> ValueRemovedFromCollection;
 		
 		public NDebugger Debugger {
 			get {
@@ -52,6 +53,12 @@ namespace Debugger
 			}
 		}
 		
+		public bool MayHaveSubVariables {
+			get {
+				return val.MayHaveSubVariables;
+			}
+		}
+		
 		protected virtual void OnValueChanged()
 		{
 			if (ValueChanged != null) {
@@ -68,6 +75,12 @@ namespace Debugger
 			subVariables.UpdateTo(newVariables);
 		}
 		
+		protected internal virtual void OnValueRemovedFromCollection(VariableCollectionEventArgs e) {
+			if (ValueRemovedFromCollection != null) {
+				ValueRemovedFromCollection(this, e);
+			}
+		}
+		
 		public Variable(NDebugger debugger, Value val, string name)
 		{
 			this.debugger = debugger;

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/VariableCollection.cs

@@ -93,6 +93,7 @@ namespace Debugger
 			if (variable != null) {
 				InnerList.Remove(variable);
 				OnVariableRemoved(new VariableEventArgs(variable));
+				variable.OnValueRemovedFromCollection(new VariableCollectionEventArgs(this));
 			}
 		}