Merge pull request #9301 from mono/backport-pr-9284-to-release-8.4

[release-8.4] [Debugger] Simplify PinnedWatchView, allow scrolling children via popover

Author: sandyarmstrong

main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger.VSTextView/PinnedWatches/PinnedWatchView.cs

@@ -32,39 +32,43 @@
 
 namespace MonoDevelop.Debugger.VSTextView.PinnedWatches
 {
-	sealed class PinnedWatchView : NSScrollView
+	sealed class PinnedWatchView : NSView
 	{
+		readonly PinnedWatch watch;
+		readonly StackFrame frame;
 		readonly ObjectValueTreeViewController controller;
 		readonly NSLayoutConstraint heightConstraint;
 		readonly NSLayoutConstraint widthConstraint;
 		readonly MacObjectValueTreeView treeView;
+		MacDebuggerTooltipWindow popover;
 		NSLayoutConstraint superHeightConstraint;
 		NSLayoutConstraint superWidthConstraint;
 		ObjectValue objectValue;
 		bool disposed;
 
 		public PinnedWatchView (PinnedWatch watch, StackFrame frame)
 		{
-			HasVerticalScroller = true;
-			AutohidesScrollers = true;
+			this.watch = watch ?? throw new ArgumentNullException (nameof (watch));
+			this.frame = frame;
 
 			controller = new ObjectValueTreeViewController ();
 			controller.SetStackFrame (frame);
 			controller.AllowEditing = true;
+			controller.AllowExpanding = false;
 
 			treeView = controller.GetMacControl (headersVisible: false, compactView: true, allowPinning: true);
 
 			controller.PinnedWatch = watch;
 
 			if (watch.Value != null)
-				controller.AddValue (watch.Value);
+				controller.AddValue (objectValue = watch.Value);
 
 			var rect = treeView.Frame;
 
 			if (rect.Height < 1)
 				treeView.Frame = new CoreGraphics.CGRect (rect.X, rect.Y, rect.Width, 19);
 
-			DocumentView = treeView;
+			AddSubview (treeView);
 			Frame = treeView.Frame;
 
 			heightConstraint = HeightAnchor.ConstraintEqualToConstant (treeView.Frame.Height);
@@ -76,6 +80,27 @@ public PinnedWatchView (PinnedWatch watch, StackFrame frame)
 			DebuggingService.ResumedEvent += OnDebuggerResumed;
 			DebuggingService.PausedEvent += OnDebuggerPaused;
 			treeView.Resized += OnTreeViewResized;
+
+			AddTrackingArea (new NSTrackingArea (
+				default,
+				NSTrackingAreaOptions.ActiveInActiveApp |
+				NSTrackingAreaOptions.InVisibleRect |
+				NSTrackingAreaOptions.MouseEnteredAndExited,
+				this,
+				null));
+		}
+
+		public override void MouseEntered (NSEvent theEvent)
+		{
+			if (popover != null && popover.Shown)
+				return;
+
+			if (objectValue != null && objectValue.HasChildren) {
+				if (popover == null)
+					popover = new MacDebuggerTooltipWindow (watch.Location, frame, objectValue, watch);
+				popover.Show (treeView.Frame, this, NSRectEdge.MaxXEdge);
+				popover.Expand ();
+			}
 		}
 
 		public void Refresh()
@@ -141,41 +166,16 @@ void OnTreeViewResized (object sender, EventArgs e)
 
 			superHeightConstraint.Constant = height;
 			superWidthConstraint.Constant = width;
-
-#if REPARENT_SO_SCROLLING_WORKS
-			// Find our parent CocoaEditorGridView
-			var gridView = textView.Superview;
-			while (gridView != null && gridView.GetType ().Name != CocoaEditorGridView)
-				gridView = gridView.Superview;
-
-			if (gridView == null)
-				return;
-
-			// Find the CocoaTextViewScrollView
-			NSView textViewScrollView = null;
-			foreach (var child in gridView.Subviews) {
-				if (child.GetType ().Name == CocoaTextViewScrollView) {
-					textViewScrollView = child;
-					break;
-				}
-			}
-
-			materialView.RemoveFromSuperview ();
-
-			gridView.AddSubview (materialView, NSWindowOrderingMode.Above, textViewScrollView);
-#endif
 		}
 
 		void OnDebuggerResumed (object sender, EventArgs e)
 		{
 			controller.ChangeCheckpoint ();
-			controller.AllowExpanding = false;
 			controller.AllowEditing = false;
 		}
 
 		void OnDebuggerPaused (object sender, EventArgs e)
 		{
-			controller.AllowExpanding = true;
 			controller.AllowEditing = true;
 		}
 

main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger.VSTextView/QuickInfo/MacDebuggerTooltipWindow.cs

@@ -78,6 +78,11 @@ public MacDebuggerTooltipWindow (PinnedWatchLocation location, StackFrame frame,
 			treeView.Resized += OnTreeViewResized;
 		}
 
+		public void Expand ()
+		{
+			treeView.ExpandItem (treeView.ItemAtRow (0), false);
+		}
+
 		public DebuggerSession GetDebuggerSession ()
 		{
 			return controller.GetStackFrame ()?.DebuggerSession;

main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger/ObjectValue/Mac/MacObjectValueTreeView.cs

@@ -191,9 +191,11 @@ public bool AllowWatchExpressions {
 		public PinnedWatch PinnedWatch {
 			get => pinnedWatch;
 			set {
-				if (pinnedWatch != value) {
+				if (pinnedWatch != value && pinColumn != null) {
 					pinnedWatch = value;
 					Runtime.RunInMainThread (() => {
+						if (pinColumn == null)
+							return;
 						if (value == null) {
 							pinColumn.MinWidth = pinColumn.MaxWidth = pinColumn.Width = MacDebuggerObjectPinView.MinWidth;
 						} else {

main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger/ObjectValue/Mac/MacObjectValueTreeViewDataSource.cs

@@ -75,11 +75,13 @@ void Add (MacObjectValueNode parent, ObjectValueNode node)
 
 			parent.Children.Add (value);
 
-			foreach (var child in node.Children)
-				Add (value, child);
+			if (treeView.AllowExpanding) {
+				foreach (var child in node.Children)
+					Add (value, child);
 
-			if (node.HasChildren && !node.ChildrenLoaded)
-				Add (value, new LoadingObjectValueNode (node));
+				if (node.HasChildren && !node.ChildrenLoaded)
+					Add (value, new LoadingObjectValueNode (node));
+			}
 		}
 
 		void Insert (MacObjectValueNode parent, int index, ObjectValueNode node)
@@ -89,11 +91,13 @@ void Insert (MacObjectValueNode parent, int index, ObjectValueNode node)
 
 			parent.Children.Insert (index, value);
 
-			foreach (var child in node.Children)
-				Add (value, child);
+			if (treeView.AllowExpanding) {
+				foreach (var child in node.Children)
+					Add (value, child);
 
-			if (node.HasChildren && !node.ChildrenLoaded)
-				Add (value, new LoadingObjectValueNode (node));
+				if (node.HasChildren && !node.ChildrenLoaded)
+					Add (value, new LoadingObjectValueNode (node));
+			}
 		}
 
 		void Remove (MacObjectValueNode node, List<MacObjectValueNode> removed)