inspector

Assets/UIWidgets/Tests/EditableTextWiget.cs

         }
         
         void OnDestroy() {
+            this.windowAdapter.Destory();
             this.windowAdapter = null;
         }
     }

Assets/UIWidgets/Tests/Paragraph.cs

         }
 
         void OnDestroy() {
+            this.windowAdapter.Destory();
             this.windowAdapter = null;
         }
 

Assets/UIWidgets/Tests/Widgets.cs

         }
 
         void OnDestroy() {
+            this.windowAdapter.Destory();
             this.windowAdapter = null;
         }
 
         }
 
         Widget asPage() {
-            return new AsScreen();
+            //return new AsScreen();
+            return new WidgetInspector(null, new AsScreen(), null);
         }
     }
 

Assets/UIWidgets/editor/editor_window.cs

 using UnityEngine;
 using Rect = UnityEngine.Rect;
 
-namespace UIWidgets.editor {
+namespace UIWidgets.editor {  
+    
-        public WindowAdapter(EditorWindow editorWindow) {
+        
+        private static List<WindowAdapter> _windowAdapters = new List<WindowAdapter>();
+        private bool _alive;
+        public static IEnumerable<WindowAdapter> windowAdapters
+        {
+            get { return _windowAdapters; }
+        }
+
+        public WindowAdapter(EditorWindow editorWindow)
+        {
+            this._alive = true;
             this.editorWindow = editorWindow;
             this.editorWindow.wantsMouseMove = false;
             this.editorWindow.wantsMouseEnterLeaveWindow = false;
             finally {
                 instance = null;
             }
-
+            _windowAdapters.Add(this);
+        public bool alive
+        {
+            get { return _alive; }
+        }
+        
+        public void Destory()
+        {
+            var index = _windowAdapters.FindIndex(w => w == this);
+            if (index >= 0)
+            {
+                _windowAdapters.RemoveAt(index);
+            }
+
+            this._alive = false;
+        }
+        
+        public WidgetInspectorService widgetInspectorService
+        {
+            get { return _binding.widgetInspectorService; }
+        }
+        
+
         readonly WidgetsBinding _binding;
 
         readonly RasterCache _rasterCache;
 
             try {
                 this.doOnGUI();
+            }
+            finally {
+                instance = null;
+                WidgetsBinding.instance = null;
+            }
+        }
+
+        public void WithBinding(Action fn)
+        {
+            instance = this;
+            WidgetsBinding.instance = this._binding;
+            try
+            {
+                fn();
+            }
+            finally {
+                instance = null;
+                WidgetsBinding.instance = null;
+            }
+        }
+        
+        public T WithBindingFunc<T>(Func<T> fn)
+        {
+            instance = this;
+            WidgetsBinding.instance = this._binding;
+            try
+            {
+                return fn();
             }
             finally {
                 instance = null;

Assets/UIWidgets/foundation/diagnostics.cs

                 {"name", this.name},
                 {"showSeparator", this.showSeparator},
                 {"description", this.toDescription()},
-                {"level", this.level.ToString()},
+                {"level",  Convert.ToString(this.level)},
-                {"style", this.style.ToString()},
-                {"valueToString", this.valueObject.ToString()},
+                {"style",  Convert.ToString(this.style)},
+                {"valueToString", Convert.ToString(valueObject)},
                 {"type", this.GetType().ToString()},
                 {"hasChildren", this.getChildren().isNotEmpty()}
             };
                 return "\"" + text + "\"";
             }
 
-            return text;
+            return text ?? "null";
         }
     }
 
     }
 
     public delegate T ComputePropertyValueCallback<T>();
-
+    
     public class DiagnosticsProperty<T> : DiagnosticsNode {
         public DiagnosticsProperty(
             string name,
         public override Dictionary<string, object> toJsonMap() {
             var json = base.toJsonMap();
             if (this.defaultValue != Diagnostics.kNoDefaultValue) {
-                json["defaultValue"] = this.defaultValue == null ? "null" : this.defaultValue.ToString();
+                json["defaultValue"] =  Convert.ToString(this.defaultValue);
             }
 
             if (this.ifEmpty != null) {
 
             json["propertyType"] = this.propertyType.ToString();
             json["valueToString"] = this.valueToString();
-            json["defaultLevel"] = this._defaultLevel.ToString();
+            json["defaultLevel"] =  Convert.ToString(this._defaultLevel);
             if (typeof(Diagnosticable).IsAssignableFrom(typeof(T))) {
                 json["isDiagnosticableValue"] = true;
             }

Assets/UIWidgets/painting/box_decoration.cs

         public override BoxPainter createBoxPainter(VoidCallback onChanged = null) {
             return new _BoxDecorationPainter(this, onChanged);
         }
-
+    
         public bool Equals(BoxDecoration other) {
             if (object.ReferenceEquals(null, other)) return false;
             if (object.ReferenceEquals(this, other)) return true;

Assets/UIWidgets/painting/text_span.cs

 using System.Linq;
 using System.Text;
 using UIWidgets.foundation;
+using UIWidgets.gestures;
 using UIWidgets.ui;
 using UnityEditor;
 using UnityEngine.Assertions;
         public readonly TextStyle style;
         public readonly string text;
         public readonly List<TextSpan> children;
-        public readonly GestureMock recognizer;
+        public readonly GestureRecognizer recognizer;
 
         public TextSpan(string text = "", TextStyle style = null, List<TextSpan> children = null)
         {
             return left.SequenceEqual(right);
         }
         
-        
+        public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+            base.debugFillProperties(properties);
+            properties.defaultDiagnosticsTreeStyle = DiagnosticsTreeStyle.whitespace;
+            // Properties on style are added as if they were properties directly on
+            // this TextSpan.
+            if (style != null)
+            {
+                style.debugFillProperties(properties);
+            }    
+
+            properties.add(new DiagnosticsProperty<GestureRecognizer>(
+                "recognizer", recognizer,
+                description: recognizer == null ? "" : recognizer.GetType().FullName,
+                defaultValue: Diagnostics.kNullDefaultValue
+            ));
+
+            properties.add(new StringProperty("text", text, showName: false, defaultValue: Diagnostics.kNullDefaultValue));
+            if (style == null && text == null && children == null)
+            {
+                properties.add(DiagnosticsNode.message("(empty)"));                
+            }
+        }
+
         public override List<DiagnosticsNode> debugDescribeChildren() {
             if (children == null)
             {

Assets/UIWidgets/rendering/box.cs

             });
             return result;
         }
-
+        
+        public override Rect semanticBounds
+        {
+            get { return Offset.zero & size; }
+        }
+        
         protected override void debugResetSize() {
             size = size;
         }

Assets/UIWidgets/rendering/editable.cs

                 {
                     _showCursor.removeListener(markNeedsPaint);
                 }
+
                 _showCursor = value;
                 if (attached)
                 {
             {
                 var caretOffset = _textPainter.getOffsetForCaret(selection.extendPos, _caretPrototype);
                 var start = new Offset(0.0, preferredLineHeight) + caretOffset + paintOffset;
-                return new List<TextSelectionPoint>{new TextSelectionPoint(start, null)};
+                return new List<TextSelectionPoint> {new TextSelectionPoint(start, null)};
             }
             else
             {
                 var end = new Offset(boxes[last].end, boxes[last].bottom) + paintOffset;
                 return new List<TextSelectionPoint>
-                    {
-                        new TextSelectionPoint(start, boxes[0].direction),
-                        new TextSelectionPoint(end, boxes[last].direction),
-                    };
+                {
+                    new TextSelectionPoint(start, boxes[0].direction),
+                    new TextSelectionPoint(end, boxes[last].direction),
+                };
             }
         }
 
         {
             return _textPainter.getPositionVerticalMove(position, 1);
         }
-        
+
-        
+
-            return new TextPosition(offset:line.start, affinity:affinity??position.affinity);
+            return new TextPosition(offset: line.start, affinity: affinity ?? position.affinity);
         }
 
         public bool isLineEndOrStart(int offset)
 
             return false;
         }
-        
+
-            return new TextPosition(offset:line.endIncludingNewLine, affinity:affinity??position.affinity);
+            return new TextPosition(offset: line.endIncludingNewLine, affinity: affinity ?? position.affinity);
-        
+
-        } 
-        
+        }
+
-        } 
+        }
 
         public TextPosition getParagraphStart(TextPosition position, TextAffinity? affinity = null)
         {
             }
 
             var line = _textPainter.getLineRange(lineIndex);
-            return new TextPosition(offset:line.start, affinity:affinity??position.affinity);
-        } 
-        
+            return new TextPosition(offset: line.start, affinity: affinity ?? position.affinity);
+        }
+
         public TextPosition getParagraphEnd(TextPosition position, TextAffinity? affinity = null)
         {
             D.assert(!_needsLayout);
                 {
                     break;
                 }
+
-            return new TextPosition(offset:_textPainter.getLineRange(lineIndex).endIncludingNewLine, 
-                affinity:affinity??position.affinity);
+
+            return new TextPosition(offset: _textPainter.getLineRange(lineIndex).endIncludingNewLine,
+                affinity: affinity ?? position.affinity);
         }
 
         public TextPosition getParagraphForward(TextPosition position, TextAffinity? affinity = null)
                 {
                     continue;
                 }
+
-                } 
+                }
-                return new TextPosition(position.offset, affinity??position.affinity);
+                return new TextPosition(position.offset, affinity ?? position.affinity);
-            return new TextPosition(line.end, affinity??position.affinity);
+
+            return new TextPosition(line.end, affinity ?? position.affinity);
-        
-        
+
+
         public TextPosition getParagraphBackward(TextPosition position, TextAffinity? affinity = null)
         {
             var lineCount = _textPainter.getLineCount();
                 {
                     continue;
                 }
+
-                } 
+                }
-                return new TextPosition(position.offset, affinity??position.affinity);
+                return new TextPosition(position.offset, affinity ?? position.affinity);
-            return new TextPosition(line.start, affinity??position.affinity);
+
+            return new TextPosition(line.start, affinity ?? position.affinity);
-        
-        protected override double computeMinIntrinsicWidth(double height) {
+
+        protected override double computeMinIntrinsicWidth(double height)
+        {
-        
-        protected override double computeMaxIntrinsicWidth(double height) {
+
+        protected override double computeMaxIntrinsicWidth(double height)
+        {
-        protected override double computeMinIntrinsicHeight(double width) {
+        protected override double computeMinIntrinsicHeight(double width)
+        {
-        protected override double computeMaxIntrinsicHeight(double width) {
+        protected override double computeMaxIntrinsicHeight(double width)
+        {
-        protected override double? computeDistanceToActualBaseline(TextBaseline baseline) {
+        protected override double? computeDistanceToActualBaseline(TextBaseline baseline)
+        {
-        
-        public override void handleEvent(PointerEvent evt, HitTestEntry entry) {
+
+        public override void handleEvent(PointerEvent evt, HitTestEntry entry)
+        {
-            if (evt is PointerDownEvent && onSelectionChanged != null) {
-                _tap.addPointer((PointerDownEvent)evt);
-                _doubleTap.addPointer((PointerDownEvent)evt);
+            if (evt is PointerDownEvent && onSelectionChanged != null)
+            {
+                _tap.addPointer((PointerDownEvent) evt);
+                _doubleTap.addPointer((PointerDownEvent) evt);
                 // todo long press
             }
         }
                 onSelectionChanged(TextSelection.fromPosition(position), this, SelectionChangedCause.tap);
             }
         }
-        
+
         public void handleDoubleTap()
         {
             _layoutText(constraints.maxWidth);
                 onSelectionChanged(_selectWordAtOffset(position), this, SelectionChangedCause.doubleTap);
             }
         }
-        
-        
-        protected override void performLayout() {
+
+
+        protected override void performLayout()
+        {
             _layoutText(constraints.maxWidth);
             _caretPrototype = Rect.fromLTWH(0.0, _kCaretHeightOffset, _kCaretWidth,
                 preferredLineHeight - 2.0 * _kCaretHeightOffset);
                 _paintContents(context, offset);
             }
         }
-        
+
         protected override bool hitTestSelf(Offset position)
         {
             return true;
         }
 
         // describeSemanticsConfiguration todo
-        
-        
-        public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
-            base.debugFillProperties(properties);
-            properties.add(new DiagnosticsProperty<Color>("cursorColor", cursorColor));
-            properties.add(new DiagnosticsProperty<ValueNotifier<bool>>("showCursor", showCursor));
-            properties.add(new DiagnosticsProperty<int>("maxLines", maxLines));
-            properties.add(new DiagnosticsProperty<Color>("selectionColor", selectionColor));
-            properties.add(new DiagnosticsProperty<double>("textScaleFactor", textScaleFactor));
-            properties.add(new DiagnosticsProperty<TextSelection>("selection", selection));
-            properties.add(new DiagnosticsProperty<ViewportOffset>("offset", offset));
-        }
+
 
         private void _paintCaret(Canvas canvas, Offset effectiveOffset)
         {
             D.assert(_textLayoutLastWidth == constraints.maxWidth);
             D.assert(_selectionRects != null);
             var paint = new Paint() {color = _selectionColor};
-            
+
             foreach (var box in _selectionRects)
             {
                 canvas.drawRect(box.toRect().shift(effectiveOffset), BorderWidth.zero, BorderRadius.zero, paint);
         {
             D.assert(_textLayoutLastWidth == constraints.maxWidth);
             var effectiveOffset = offset + _paintOffset;
-            
-            if (_selection != null) {
-                if (_selection.isCollapsed && _showCursor.value && cursorColor != null) {
+
+            if (_selection != null)
+            {
+                if (_selection.isCollapsed && _showCursor.value && cursorColor != null)
+                {
-                } else if (!_selection.isCollapsed && _selectionColor != null) {
-                    _selectionRects = _selectionRects??_textPainter.getBoxesForSelection(_selection);
+                }
+                else if (!_selection.isCollapsed && _selectionColor != null)
+                {
+                    _selectionRects = _selectionRects ?? _textPainter.getBoxesForSelection(_selection);
-            if (_hasFocus) {
-                var caretOffset = _textPainter.getOffsetForCaret(_selection.extendPos, Rect.fromLTWH(0, 0, 1, preferredLineHeight));
+            if (_hasFocus)
+            {
+                var caretOffset =
+                    _textPainter.getOffsetForCaret(_selection.extendPos, Rect.fromLTWH(0, 0, 1, preferredLineHeight));
-                Input.compositionCursorPos = new Vector2((float)caretRec.left, (float)caretRec.bottom);
+                Input.compositionCursorPos = new Vector2((float) caretRec.left, (float) caretRec.bottom);
+
-        
+
         private void _handleSetSelection(TextSelection selection)
         {
             onSelectionChanged(selection, this, SelectionChangedCause.keyboard);
 
                 return preferredLineHeight * lines;
             }
-            
+
             _layoutText(width);
             return Math.Max(preferredLineHeight, _textPainter.height);
         }
             {
                 return TextSelection.fromPosition(position);
             }
+
-        
+
         private bool _isMultiline
         {
             get { return _maxLines != 1; }
             }
 
             return 0.0;
+        }
+
+
+        public override void debugFillProperties(DiagnosticPropertiesBuilder properties)
+        {
+            base.debugFillProperties(properties);
+            properties.add(new DiagnosticsProperty<Color>("cursorColor", cursorColor));
+            properties.add(new DiagnosticsProperty<ValueNotifier<bool>>("showCursor", showCursor));
+            properties.add(new DiagnosticsProperty<int>("maxLines", maxLines));
+            properties.add(new DiagnosticsProperty<Color>("selectionColor", selectionColor));
+            properties.add(new DiagnosticsProperty<double>("textScaleFactor", textScaleFactor));
+            properties.add(new DiagnosticsProperty<TextSelection>("selection", selection));
+            properties.add(new DiagnosticsProperty<ViewportOffset>("offset", offset));
+        }
+
+        public override List<DiagnosticsNode> debugDescribeChildren()
+        {
+            return new List<DiagnosticsNode>
+            {
+                text.toDiagnosticsNode(
+                    name: "text",
+                    style: DiagnosticsTreeStyle.transition
+                ),
+            };
         }
     }
 }

Assets/UIWidgets/rendering/object.cs

             return null;
         }
 
+        public abstract Rect semanticBounds { get; }
+
         public virtual void handleEvent(PointerEvent evt, HitTestEntry entry) {
         }
 

Assets/UIWidgets/rendering/paragraph.cs

 using System;
+using System.Collections.Generic;
+using UIWidgets.foundation;
 using UIWidgets.painting;
 using UIWidgets.ui;
 using UnityEngine;
             _layoutTextWithConstraints(constraints);
             return _textPainter.computeDistanceToActualBaseline(baseline);
         }
-        
-        
+
+
+        protected override bool hitTestSelf(Offset position)
+        {
+            return true;
+        }
+
         protected override void performLayout() {
             _layoutTextWithConstraints(constraints);
             var textSize = _textPainter.size;
         
         private void _layoutTextWithConstraints(BoxConstraints constraints) {
             _layoutText(minWidth: constraints.minWidth, maxWidth: constraints.maxWidth);
+        }
+
+        public override List<DiagnosticsNode> debugDescribeChildren()
+        {
+            return new List<DiagnosticsNode>
+            {
+                text.toDiagnosticsNode(name: "text", style: DiagnosticsTreeStyle.transition)
+            };
+        }
+        
+        public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+            base.debugFillProperties(properties);
+            properties.add(new EnumProperty<TextAlign>("textAlign", textAlign));
+            properties.add(new EnumProperty<TextDirection?>("textDirection", textDirection));
+            properties.add(new FlagProperty("softWrap", value: softWrap, ifTrue: "wrapping at box width", 
+                ifFalse: "no wrapping except at line break characters", showName: true));
+            properties.add(new EnumProperty<TextOverflow>("overflow", overflow));
+            properties.add(new DoubleProperty("textScaleFactor", textScaleFactor, defaultValue: 1.0));
+            properties.add(new IntProperty("maxLines", maxLines, ifNull: "unlimited"));
         }
     }
 }

Assets/UIWidgets/rendering/proxy_box.cs

             this.markNeedsPaint();
         }
 
+        protected override bool hitTestSelf(Offset position) {
+            return _decoration.hitTest(size, position);
+        }
+        
         public override void paint(PaintingContext context, Offset offset) {
             this._painter = this._painter ?? this._decoration.createBoxPainter(this.markNeedsPaint);
             var filledConfiguration = this.configuration.copyWith(size: this.size);

Assets/UIWidgets/rendering/sliver.cs

                 return null;
             }
         }
+        
+        public override Rect semanticBounds {
+            get { return paintBounds; }
+        }
 
         protected override void debugResetSize() {
         }

Assets/UIWidgets/rendering/stack.cs

 using UIWidgets.painting;
 using UIWidgets.ui;
 using UIWidgets.foundation;
+using UIWidgets.gestures;
 using UnityEngine;
 using Rect = UIWidgets.ui.Rect;
 
             }
         }
 
+        protected override bool hitTestChildren(HitTestResult result, Offset position = null) {
+            return defaultHitTestChildren(result, position: position);
+        }
+        
         public void paintStack(PaintingContext context, Offset offset) {
             defaultPaint(context, offset);
         }

Assets/UIWidgets/rendering/view.cs

 using System;
 using UIWidgets.foundation;
 using UIWidgets.gestures;
+using UIWidgets.painting;
 using UIWidgets.ui;
 using UnityEngine;
 using Rect = UIWidgets.ui.Rect;
             get { return Offset.zero & (this.size * this.configuration.devicePixelRatio); }
         }
 
+        public override Rect semanticBounds {
+            get
+            {
+                D.assert(_rootTransform != null);
+                return MatrixUtils.transformRect(_rootTransform, Offset.zero & size);
+            }
+        }
+        
         public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
             D.assert(() => {
                 properties.add(DiagnosticsNode.message("debug mode enabled"));

Assets/UIWidgets/ui/painting/picture.cs

                 this.addPaintBounds(drawPicture.picture.paintBounds);
             } else if (drawCmd is DrawConcat) {
                 this._transform = ((DrawConcat) drawCmd).transform * this._transform;
+            } else if (drawCmd is DrawSetMatrix)
+            {
+                this._transform = ((DrawSetMatrix) drawCmd).matrix;
             } else if (drawCmd is DrawSave) {
                 this.stack.Push(new CanvasRec(
                     this._transform,

Assets/UIWidgets/widgets/basic.cs

             this.overflow = overflow;
         }
 
-        public AlignmentDirectional alignment;
-        public TextDirection? textDirection;
-        public StackFit fit;
-        public rendering.Overflow overflow;
+        public readonly AlignmentDirectional alignment;
+        public readonly TextDirection? textDirection;
+        public readonly StackFit fit;
+        public readonly rendering.Overflow overflow;
 
 
         public override RenderObject createRenderObject(BuildContext context) {
             properties.add(new DiagnosticsProperty<AlignmentDirectional>("alignment", alignment));
             properties.add(new EnumProperty<StackFit>("fit", fit));
             properties.add(new EnumProperty<Overflow>("overflow", overflow));
+        }
+    }
+
+    public class Positioned : ParentDataWidget<Stack>
+    {
+        public Positioned(Widget child, Key key = null,  double? left = null, double? top = null, 
+            double? right = null, double? bottom = null, double? width = null, double? height = null) : base(key, child)
+        {
+            D.assert(left == null || right == null || width == null);
+            D.assert(top == null || bottom == null || height == null);
+            this.left = left;
+            this.top = top;
+            this.right = right;
+            this.bottom = bottom;
+            this.width = width;
+            this.height = height;
+        }
+
+        public static Positioned fromRect(Rect rect, Widget child, Key key = null)
+        {
+            return new Positioned(child, key: key, left: rect.left,
+                top: rect.top, width: rect.width, height: rect.height);
+        }
+        
+        public static Positioned fromRelativeRect(Rect rect, Widget child, Key key = null)
+        {
+            return new Positioned(child, key: key, left: rect.left,
+                top: rect.top, right: rect.right, bottom: rect.bottom);
+        }
+           
+        public static Positioned fill(Widget child, Key key = null)
+        {
+            return new Positioned(child, key: key, left: 0.0,
+                top: 0.0, right: 0.0, bottom: 0.0);
+        }
+        
+        public static Positioned directional(Widget child, TextDirection textDirection, Key key = null, 
+            double? start = null, double? top = null, 
+            double? end = null, double? bottom = null, double? width = null, double? height = null) 
+        {
+            D.assert(textDirection != null);
+            double? left = null;
+            double? right = null;
+            switch (textDirection)
+            {
+                    case TextDirection.rtl:
+                           left = end;
+                           right = start;
+                           break;
+                         case TextDirection.ltr:
+                           left = start;
+                           right = end;
+                           break; 
+            }
+            return new Positioned(child, key:key, left: left, top: top, right: right, bottom: bottom, width: width, height: height);
+        }
+
+        public readonly double? left;
+
+        public readonly double? top;
+
+        public readonly double? right;
+        
+        public readonly double? bottom;
+
+        public readonly double? width;
+
+        public readonly double? height;
+        
+        public override void applyParentData(RenderObject renderObject) {
+            D.assert(renderObject.parentData is StackParentData);
+            StackParentData parentData = (StackParentData) renderObject.parentData;
+            bool needsLayout = false;
+
+            if (parentData.left != left) {
+                parentData.left = left;
+                needsLayout = true;
+            }
+
+            if (parentData.top != top) {
+                parentData.top = top;
+                needsLayout = true;
+            }
+
+            if (parentData.right != right) {
+                parentData.right = right;
+                needsLayout = true;
+            }
+
+            if (parentData.bottom != bottom) {
+                parentData.bottom = bottom;
+                needsLayout = true;
+            }
+
+            if (parentData.width != width) {
+                parentData.width = width;
+                needsLayout = true;
+            }
+
+            if (parentData.height != height) {
+                parentData.height = height;
+                needsLayout = true;
+            }
+
+            if (needsLayout) {
+                var targetParent = renderObject.parent;
+                if (targetParent is RenderObject)
+                    ((RenderObject)targetParent).markNeedsLayout();
+            }
+        }
+        
+        public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+            base.debugFillProperties(properties);
+            properties.add(new DoubleProperty("left", left, defaultValue: null));
+            properties.add(new DoubleProperty("top", top, defaultValue: null));
+            properties.add(new DoubleProperty("right", right, defaultValue: null));
+            properties.add(new DoubleProperty("bottom", bottom, defaultValue: null));
+            properties.add(new DoubleProperty("width", width, defaultValue: null));
+            properties.add(new DoubleProperty("height", height, defaultValue: null));
         }
     }
 

Assets/UIWidgets/widgets/binding.cs

         public WidgetsBinding() {
             this.buildOwner.onBuildScheduled = this._handleBuildScheduled;
             Window.instance.onLocaleChanged += this.handleLocaleChanged;
+            widgetInspectorService = new WidgetInspectorService(this);
             this.addPersistentFrameCallback((duration) =>
             {
                 MeshGenrator.tickNextFrame();
             return this._observers.Remove(observer);
         }
 
+        public readonly WidgetInspectorService widgetInspectorService;
+        
         protected override void handleMetricsChanged() {
             base.handleMetricsChanged();
             foreach (WidgetsBindingObserver observer in this._observers) {

Assets/UIWidgets/widgets/app.cs

+using System;
+using UIWidgets.foundation;
+using UIWidgets.gestures;
+using UIWidgets.painting;
+using UIWidgets.ui;
+using UnityEngine;
+using Color = UIWidgets.ui.Color;
+
+namespace UIWidgets.widgets
+{
+    public class WidgetsApp : StatefulWidget
+    {
+
+        public readonly Widget child;
+        
+        public WidgetsApp(Key key, Widget child) : base(key)
+        {
+            this.child = child;
+        }
+       
+
+        public override State createState()
+        {
+            return new _WidgetsAppState();
+        }
+    }
+
+    class _WidgetsAppState : State<WidgetsApp>
+    {
+        
+        public override void initState() {
+            base.initState();
+            D.assert(() =>
+            {
+                WidgetInspectorService.instance.inspectorShowCallback += inspectorShowChanged;
+                return true;
+            });
+        }
+
+        public override void dispose() {
+            
+            D.assert(() =>
+            {
+                WidgetInspectorService.instance.inspectorShowCallback -= inspectorShowChanged;
+                return true;
+            });
+            base.dispose();
+        }
+
+        private void inspectorShowChanged()
+        {
+            setState(() => {});
+        }
+        
+        public override Widget build(BuildContext context)
+        {
+            Widget result = widget.child;
+            D.assert(() =>
+            {
+                if (WidgetInspectorService.instance.debugShowInspector)
+                {
+                    result = new WidgetInspector(null, result, _InspectorSelectButtonBuilder);
+                }
+                return true;
+            });
+            return result;
+        }
+
+        private Widget _InspectorSelectButtonBuilder(BuildContext context, VoidCallback onPressed)
+        {
+            return new _InspectorSelectButton(onPressed: onPressed);
+        }
+    }
+    
+    class _InspectorSelectButton : StatelessWidget {
+        public _InspectorSelectButton(
+            VoidCallback onPressed,
+            Key key = null
+        ) : base(key: key)
+        {
+            this.onPressed = () => onPressed();
+        }
+
+        public readonly GestureTapCallback onPressed;
+
+        public override Widget build(BuildContext context) {
+            return new GestureDetector(
+                onTap: this.onPressed,
+                child: new Container(
+                    color: Color.fromARGB(255, 0, 0, 255),
+                    padding: EdgeInsets.all(10),
+                    child: new Text("Select", style: new painting.TextStyle(color: Color.fromARGB(255, 255, 255, 255)))
+                )
+            );
+        }
+    }
+}

Assets/UIWidgets/widgets/app.cs.meta

+fileFormatVersion: 2
+guid: a65e962810af4caba850ebe722776ee9
+timeCreated: 1540267826

Assets/UIWidgets/widgets/widget_inspector.cs.meta

+fileFormatVersion: 2
+guid: bbffff803c4d4fd5b368c62f161e9e59
+timeCreated: 1539239769

Assets/UIWidgets/debugger/diagnostics.cs

+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using UIWidgets.foundation;
+using UIWidgets.ui;
+
+namespace UIWidgets.debugger
+{
+    public class DiagnosticsNode : IEquatable<DiagnosticsNode>
+    {
+        private readonly Dictionary<string, object> _json; // todo use json class such as simple json
+        public readonly bool isProperty;
+        private DiagnosticsNode _parent;
+
+        public DiagnosticsNode(Dictionary<string, object> json, bool isProperty)
+        {
+            this._json = json;
+            this.isProperty = isProperty;
+        }
+
+        public bool Equals(DiagnosticsNode other)
+        {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return Equals(diagnosticRef, other.diagnosticRef);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((DiagnosticsNode) obj);
+        }
+
+        public static bool operator ==(DiagnosticsNode left, DiagnosticsNode right)
+        {
+            return Equals(left, right);
+        }
+
+        public static bool operator !=(DiagnosticsNode left, DiagnosticsNode right)
+        {
+            return !Equals(left, right);
+        }
+
+        public DiagnosticsNode parent
+        {
+            get { return _parent; }
+            set { _parent = value; }
+        }
+
+        public string getStringMember(string memberName)
+        {
+            object ret;
+            _json.TryGetValue(memberName, out ret);
+            return ret == null ? null : ret.ToString();
+        }
+
+        public string separator
+        {
+            get { return showSeparator ? ":" : ""; }
+        }
+
+        public string name
+        {
+            get { return getStringMember("name"); }
+        }
+
+        public bool showSeparator
+        {
+            get { return getBoolMember("showSeparator", true); }
+        }
+
+        public string description
+        {
+            get { return getStringMember("description"); }
+        }
+
+        public DiagnosticLevel level
+        {
+            get { return getLevelMember("level", DiagnosticLevel.info); }
+        }
+
+        public bool showName
+        {
+            get { return getBoolMember("showName", true); }
+        }
+
+        public string emptyBodyDescription
+        {
+            get { return getStringMember("emptyBodyDescription"); }
+        }
+
+        public DiagnosticsTreeStyle style
+        {
+            get { return getStyleMember("style", DiagnosticsTreeStyle.sparse); }
+        }
+
+        public string type
+        {
+            get { return getStringMember("type"); }
+        }
+
+        public bool isQuoted
+        {
+            get { return getBoolMember("quoted", false); }
+        }
+
+        public bool hasIsQuoted
+        {
+            get { return _json.ContainsKey("quoted"); }
+        }
+
+        public string unit
+        {
+            get { return getStringMember("unit"); }
+        }
+
+        public bool hasUnit
+        {
+            get { return _json.ContainsKey("unit"); }
+        }
+
+        public string numberToString
+        {
+            get { return getStringMember("numberToString"); }
+        }
+
+        public bool hasNumberToString
+        {
+            get { return _json.ContainsKey("numberToString"); }
+        }
+
+        public string ifTrue
+        {
+            get { return getStringMember("ifTrue"); }
+        }
+
+        public bool hasIfTrue
+        {
+            get { return _json.ContainsKey("ifTrue"); }
+        }
+
+        public string ifFalse
+        {
+            get { return getStringMember("ifFalse"); }
+        }
+
+        public bool hasIfFalse
+        {
+            get { return _json.ContainsKey("ifFalse"); }
+        }
+
+        public List<string> values
+        {
+            get
+            {
+                object value;
+                _json.TryGetValue("values", out value);
+                if (value == null)
+                {
+                    return null;
+                }
+
+                return ((IEnumerable) value).Cast<object>().Select(o => o.ToString()).ToList();
+            }
+        }
+
+        public bool hasValues
+        {
+            get { return _json.ContainsKey("values"); }
+        }
+
+        public string ifPresent
+        {
+            get { return getStringMember("ifPresent"); }
+        }
+
+        public bool hasIfPresent
+        {
+            get { return _json.ContainsKey("ifPresent"); }
+        }
+
+        public string defaultValue
+        {
+            get { return getStringMember("defaultValue"); }
+        }
+
+        public bool hasDefaultValue
+        {
+            get { return _json.ContainsKey("defaultValue"); }
+        }
+
+        public string ifEmpty
+        {
+            get { return getStringMember("ifEmpty"); }
+        }
+
+        public string ifNull
+        {
+            get { return getStringMember("ifNull"); }
+        }
+
+        public string tooltip
+        {
+            get { return getStringMember("tooltip"); }
+        }
+
+        public bool hasTooltip
+        {
+            get { return _json.ContainsKey("tooltip"); }
+        }
+
+        public bool missingIfNull
+        {
+            get { return getBoolMember("missingIfNull", false); }
+        }
+
+        public string exception
+        {
+            get { return getStringMember("exception"); }
+        }
+
+        public bool hasException
+        {
+            get { return _json.ContainsKey("exception"); }
+        }
+
+        public string propertyType
+        {
+            get { return getStringMember("propertyType"); }
+        }
+
+        public DiagnosticLevel defaultLevel
+        {
+            get { return getLevelMember("defaultLevel", DiagnosticLevel.info); }
+        }
+
+        public bool isDiagnosticableValue
+        {
+            get { return getBoolMember("isDiagnosticableValue", false); }
+        }
+
+        public InspectorInstanceRef valueRef
+        {
+            get
+            {
+                var id = getStringMember("valueId");
+                return new InspectorInstanceRef(id);
+            }
+        }
+
+        public List<DiagnosticsNode> children
+        {
+            get
+            {
+                object value;
+                _json.TryGetValue("children", out value);
+                if (value == null)
+                {
+                    return new List<DiagnosticsNode>();
+                }
+
+                return ((IEnumerable) value).Cast<Dictionary<string, object>>()
+                    .Select(n => new DiagnosticsNode(n, false))
+                    .ToList();
+            }
+        }
+
+        public Dictionary<string, object> valuePropertiesJson
+        {
+            get
+            {
+                object value;
+                _json.TryGetValue("valueProperties", out value);
+                return (Dictionary<string, object>) value;
+
+            }
+        }
+
+        public bool isColorProperty
+        {
+            get { return isProperty && (propertyType == typeof(Color).ToString()); }
+        }
+        
+//
+//        public bool isEnumProperty
+//        {
+//            get
+//            {
+//                var type = this.type;
+//                
+//            }
+//        }
+//        
+
+
+        private bool getBoolMember(string memberName, bool defaultValue = false)
+        {
+            object value;
+            if (!_json.TryGetValue(memberName, out value))
+            {
+                return defaultValue;
+            }
+
+            if (value == null)
+            {
+                return defaultValue;
+            }
+
+            return Convert.ToBoolean(value);
+        }
+
+        private DiagnosticLevel getLevelMember(string memberName, DiagnosticLevel defaultValue)
+        {
+            return getEnumMember(memberName, defaultValue);
+        }
+
+        private DiagnosticsTreeStyle getStyleMember(string memberName, DiagnosticsTreeStyle defaultValue)
+        {
+            return getEnumMember(memberName, defaultValue);
+        }
+
+        private T getEnumMember<T>(string memberName, T defaultValue)
+        {
+            object value;
+            if (!_json.TryGetValue(memberName, out value))
+            {
+                return defaultValue;
+            }
+
+
+            if (value == null)
+            {
+                return defaultValue;
+            }
+
+            return (T) Enum.Parse(typeof(T), value.ToString());
+        }
+
+        public InspectorInstanceRef diagnosticRef
+        {
+            get { return new InspectorInstanceRef(_json["objectId"].ToString()); }
+        }
+
+        public List<DiagnosticsNode> inlineProperties
+        {
+            get
+            {
+                var properties = new List<DiagnosticsNode>();
+                object value;
+                _json.TryGetValue("properties", out value);
+                if (value != null)
+                {
+                    foreach (var v in (IEnumerable<Dictionary<string, object>>) value)
+                    {
+                        properties.Add(new DiagnosticsNode(v, true));
+                    }
+                }
+                return properties;
+            }
+        }
+    }
+
+    public class InspectorInstanceRef : IEquatable<InspectorInstanceRef>
+    {
+        public readonly string id;
+
+        public InspectorInstanceRef(string id)
+        {
+            this.id = id;
+        }
+
+        public bool Equals(InspectorInstanceRef other)
+        {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return string.Equals(id, other.id);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((InspectorInstanceRef) obj);
+        }
+
+        public override int GetHashCode()
+        {
+            return (id != null ? id.GetHashCode() : 0);
+        }
+
+        public static bool operator ==(InspectorInstanceRef left, InspectorInstanceRef right)
+        {
+            return Equals(left, right);
+        }
+
+        public static bool operator !=(InspectorInstanceRef left, InspectorInstanceRef right)
+        {
+            return !Equals(left, right);
+        }
+
+        public override string ToString()
+        {
+            return string.Format("Id: {0}", id);
+        }
+    }
+}

Assets/UIWidgets/debugger/inpsector_panel.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using UIWidgets.foundation;
+using UnityEditor;
+using UnityEditor.IMGUI.Controls;
+using UnityEngine;
+
+namespace UIWidgets.debugger
+{
+    public class InspectorPanel
+    {
+        public readonly WidgetTreeType treeType;
+        private const float splitterHeight = 8;
+        private readonly InspectorTreeView m_TreeView;
+        private readonly InspectorTreeView m_DetailTreeView;
+        private readonly InspectorService m_InspectorService;
+
+        private readonly EditorWindow m_Window;
+        private readonly string m_GroupName;
+        private Vector2 m_PropertyScrollPos = new Vector2(0, 0);
+        private bool m_NeedSelectionUpdate = true;
+        private bool m_NeedDetailUpdate = true;
+        private List<DiagnosticsNode> m_Properties;
+        private InspectorInstanceRef m_SelectedNodeRef;
+        private bool m_VisibleToUser;
+        private DateTime m_LastPropertyRefresh = DateTime.MinValue;
+        private float m_SplitOffset = -1;
+
+
+        public InspectorPanel(EditorWindow window, WidgetTreeType treeType, InspectorService inspectorService, 
+            float? splitOffset = null)
+        {
+            this.m_Window = window;
+            this.treeType = treeType;
+            this.m_InspectorService = inspectorService;
+            this.m_InspectorService.selectionChanged += handleSelectionChanged;
+            m_TreeView = new InspectorTreeView(new TreeViewState());
+            m_TreeView.onNodeSelectionChanged += OnNodeSelectionChanged;
+            m_TreeView.Reload();
+            if (treeType == WidgetTreeType.Widget)
+            {
+                m_DetailTreeView = new InspectorTreeView(new TreeViewState());
+                m_DetailTreeView.Reload();
+            }
+
+            m_GroupName = InspectorObjectGroupManager.Instance.nextGroupName("inspector");
+            m_SplitOffset = splitOffset ?? window.position.height / 2;
+        }
+
+        public string title
+        {
+            get { return treeType == WidgetTreeType.Widget ? "Widgets" : "Render Tree"; }
+        }
+
+        public bool visibleToUser
+        {
+            get { return m_VisibleToUser; }
+            set
+            {
+                if (m_VisibleToUser == value)
+                {
+                    return;
+                }
+
+                m_VisibleToUser = value;
+                if (value)
+                {
+                    m_NeedSelectionUpdate = true;
+                    m_NeedDetailUpdate = true;
+                }
+            }
+        }
+
+        public PanelState PanelState
+        {
+            get { return new PanelState(){splitOffset = m_SplitOffset, treeType = treeType}; }
+        }
+
+        public void Close()
+        {
+            this.m_InspectorService.selectionChanged -= handleSelectionChanged;
+            if (m_InspectorService != null)
+            {
+                m_InspectorService.disposeGroup(m_GroupName);
+            }
+
+            // todo
+        }
+
+        public void OnGUI()
+        {
+            if (Event.current.type != EventType.Layout)
+            {
+                var lastRect = GUILayoutUtility.GetLastRect();
+                var x = lastRect.height;
+            }
+            EditorGUILayout.BeginVertical(GUILayout.ExpandWidth(true), GUILayout.ExpandHeight(true));
+          
+            // splitter
+            m_SplitOffset = Math.Max(0, m_SplitOffset);
+            var rect = EditorGUILayout.GetControlRect(GUILayout.ExpandWidth(true), GUILayout.Height(m_SplitOffset));
+            m_TreeView.OnGUI(rect);
+            GUILayout.Box("",
+                GUILayout.ExpandWidth(true),
+                GUILayout.Height(splitterHeight));
+            var splitterRect = GUILayoutUtility.GetLastRect();
+            this.splitGUI(splitterRect);
+
+            if (m_DetailTreeView != null)
+            {
+                var rect2 = EditorGUILayout.GetControlRect(GUILayout.ExpandWidth(true), GUILayout.ExpandHeight(true));
+                m_DetailTreeView.OnGUI(rect2);
+            }
+
+            if (m_Properties != null)
+            {
+                EditorGUILayout.BeginVertical(GUILayout.ExpandWidth(true), GUILayout.ExpandHeight(true));
+                m_PropertyScrollPos = EditorGUILayout.BeginScrollView(m_PropertyScrollPos);
+                foreach (var property in m_Properties)
+                {
+                    if (property.isColorProperty)
+                    {
+                        var properties = property.valuePropertiesJson;
+                        int alpha = Util.GetIntProperty(properties, "alpha");
+                        int red = Util.GetIntProperty(properties, "red");
+                        int green = Util.GetIntProperty(properties, "green");
+
+                        int blue = Util.GetIntProperty(properties, "blue");
+                        var color = new UnityEngine.Color(red / 255.0f, green / 255.0f, blue / 255.0f, alpha / 255.0f);
+                        EditorGUILayout.ColorField(property.name, color, GUILayout.ExpandWidth(true));
+                    }
+                    else
+                    {
+                        EditorGUILayout.TextField(property.name, property.description);
+                    }
+                }
+
+                EditorGUILayout.EndScrollView();
+                EditorGUILayout.EndVertical();
+            }
+
+            EditorGUILayout.EndVertical();
+
+            if (Event.current.type == EventType.Repaint)
+            {
+                    if (splitterRect.yMax > m_Window.position.height)
+                    {
+                        m_SplitOffset -= splitterRect.yMax - m_Window.position.height;
+                        m_Window.Repaint();
+                    }  
+            }
+            
+        }
+
+
+        public void LoadTree()
+        {
+            var node = treeType == WidgetTreeType.Widget
+                ? m_InspectorService.getRootWidgetSummaryTree(m_GroupName)
+                : m_InspectorService.getRootRenderObject(m_GroupName);
+            m_TreeView.node = node;
+        }
+
+        public void Update()
+        {
+            if (!m_VisibleToUser)
+            {
+                return;
+            }
+
+            if (m_TreeView.node == null)
+            {
+                LoadTree();
+            }
+
+            updateSelection();
+            updateDetailTree();
+
+            if (treeType == WidgetTreeType.Render &&
+                DateTime.Now - m_LastPropertyRefresh > TimeSpan.FromMilliseconds(200))
+            {
+                m_LastPropertyRefresh = DateTime.Now;
+                m_Properties = m_SelectedNodeRef == null
+                    ? new List<DiagnosticsNode>()
+                    : m_InspectorService.getProperties(m_SelectedNodeRef, m_GroupName);
+                m_Properties = m_Properties.Where((p) => p.level != DiagnosticLevel.hidden).ToList();
+
+                m_Window.Repaint();
+            }
+        }
+
+
+        private void OnNodeSelectionChanged(DiagnosticsNode node)
+        {
+            m_SelectedNodeRef = node == null ? null : node.diagnosticRef;
+            m_InspectorService.setSelection(node == null ? null : node.valueRef, m_GroupName);
+            m_NeedDetailUpdate = m_DetailTreeView != null;
+        }
+
+        private void handleSelectionChanged()
+        {
+            m_NeedSelectionUpdate = true;
+            m_NeedDetailUpdate = true;
+        }
+
+        private void updateSelection()
+        {
+            if (!m_NeedSelectionUpdate)
+            {
+                return;
+            }
+
+            m_NeedSelectionUpdate = false;
+            var diagnosticsNode = m_InspectorService.getSelection(m_TreeView.selectedNode, treeType, true, m_GroupName);
+            m_SelectedNodeRef = diagnosticsNode == null ? null : diagnosticsNode.diagnosticRef;
+
+            if (diagnosticsNode != null)
+            {
+                var item = m_TreeView.getTreeItemByValueRef(diagnosticsNode.valueRef);
+                if (item == null)
+                {
+                    LoadTree();
+                    item = m_TreeView.getTreeItemByValueRef(diagnosticsNode.valueRef);
+                }
+
+                m_TreeView.CollapseAll();
+                if (item != null)
+                {
+                    m_TreeView.SetSelection(new List<int> {item.id}, TreeViewSelectionOptions.RevealAndFrame);
+                }
+                else
+                {
+                    m_TreeView.SetSelection(new List<int>());
+                }
+                m_TreeView.Repaint();
+            }
+        }
+
+        private void updateDetailTree()
+        {
+            D.assert(!m_NeedSelectionUpdate);
+            if (!m_NeedDetailUpdate)
+            {
+                return;
+            }
+
+            if (m_DetailTreeView == null)
+            {
+                return;
+            }
+
+            m_NeedDetailUpdate = false;
+            if (m_SelectedNodeRef == null)
+            {
+                m_DetailTreeView.node = null;
+            }
+            else
+            {
+                m_DetailTreeView.node = m_InspectorService.getDetailsSubtree(m_SelectedNodeRef, m_GroupName);
+            }
+
+            m_DetailTreeView.ExpandAll();
+        }
+
+        private void splitGUI(Rect splitterRect)
+        {
+            var id = GUIUtility.GetControlID("inpectorPannelSplitter".GetHashCode(), FocusType.Passive);
+            switch (Event.current.GetTypeForControl(id))
+            {
+                case EventType.MouseDown:
+                    if (splitterRect.Contains(Event.current.mousePosition))
+                    {
+                        GUIUtility.hotControl = id;
+                        Event.current.Use();
+                    }
+
+                    break;
+                case EventType.MouseDrag:
+                    if (GUIUtility.hotControl == id)
+                    {
+                        m_SplitOffset += Event.current.delta.y;
+                        m_Window.Repaint();
+                        Event.current.Use();
+                    }
+
+                    break;
+                case EventType.MouseUp:
+                    if (GUIUtility.hotControl == id)
+                    {
+                        GUIUtility.hotControl = 0;
+                        Event.current.Use();
+                    }
+
+                    break;
+                case EventType.Repaint:
+                    EditorGUIUtility.AddCursorRect(splitterRect, MouseCursor.ResizeVertical, id);
+                    break;
+            }
+        }
+    }
+
+    [Serializable]
+    public class PanelState
+    {
+        public WidgetTreeType treeType;
+        public float splitOffset;
+    }
+}

Assets/UIWidgets/debugger/inpsector_panel.cs.meta

+fileFormatVersion: 2
+guid: 077d49fa7e054bfbafc94954e83c1b2e
+timeCreated: 1540292151

Assets/UIWidgets/debugger/inspector_objectgroup.cs

+using System.Diagnostics;
+using UnityEngine;
+
+namespace UIWidgets.debugger
+{
+    public class InspectorObjectGroupManager : Singleton<InspectorObjectGroupManager>
+    {
+        [SerializeField]
+        private int m_NextId = 0;
+
+        public string nextGroupName(string name)
+        {
+            return string.Format("pid{0}_{1}_{2}", Process.GetCurrentProcess().Id, name, m_NextId++);
+        }
+        
+    }
+    public class Singleton<T>: ScriptableObject where T : ScriptableObject
+    {
+        private static T m_Instance;
+        private static bool m_CreateNonSingletonInstance;
+        private bool m_IsNonSingletonInstance;
+        
+        public static T Instance
+        {
+            get
+            {
+                if (m_Instance == null)
+                    m_Instance = ScriptableObject.CreateInstance<T>();
+                return m_Instance;
+            }
+        }
+        
+        
+        private void OnEnable()
+        {
+            if (Singleton<T>.m_CreateNonSingletonInstance)
+            {
+                this.m_IsNonSingletonInstance = true;
+                this.Initialize();
+            }
+            else if (this.m_IsNonSingletonInstance)
+                Object.DestroyImmediate((Object) this);
+            else if (m_Instance == null)
+            {
+                m_Instance = this as T;
+                this.Initialize();
+            }
+            else
+            {
+                Object.DestroyImmediate((Object) this);
+            }
+        }
+
+        protected virtual void Initialize()
+        {
+        }
+
+        public static T Create()
+        {
+            Singleton<T>.m_CreateNonSingletonInstance = true;
+            var instance = ScriptableObject.CreateInstance<T>();
+            Singleton<T>.m_CreateNonSingletonInstance = false;
+            return (T) instance;
+        }
+    }
+}

Assets/UIWidgets/debugger/inspector_objectgroup.cs.meta

+fileFormatVersion: 2
+guid: b28531fd9ecf4d298f2e95968f81e838
+timeCreated: 1540886500

Assets/UIWidgets/debugger/inspector_service.cs

+using System.Collections.Generic;
+using System.Linq;
+using UIWidgets.editor;
+using UIWidgets.widgets;
+
+namespace UIWidgets.debugger
+{
+
+    public delegate void SelectionChanged();
+
+    public class InspectorService
+    {
+        public readonly  WindowAdapter window;
+
+        public SelectionChanged selectionChanged;
+
+        private readonly WidgetInspectorService _widgetInspectorService;
+
+        public InspectorService(WindowAdapter window)
+        {
+            this.window = window;
+            _widgetInspectorService = window.widgetInspectorService;
+            _widgetInspectorService.developerInspect += this.developerInspect; // todo dispose
+        }
+
+        public bool active
+        {
+            get { return window.alive; }
+        }
+
+        public void close()
+        {
+            setShowInspect(false);
+            _widgetInspectorService.developerInspect -= this.developerInspect;
+        }
+
+        public DiagnosticsNode getRootWidgetSummaryTree(string groupName)
+        {
+            return toNode(window.WithBindingFunc(() =>_widgetInspectorService.getRootWidgetSummaryTree(groupName)));
+        }
+        
+        public DiagnosticsNode getRootWidget(string groupName)
+        {
+            return toNode(window.WithBindingFunc(() => _widgetInspectorService.getRootWidget(groupName)));
+        }
+        
+        public DiagnosticsNode getRootRenderObject(string groupName)
+        {
+            return toNode(window.WithBindingFunc(() =>_widgetInspectorService.getRootRenderObject(groupName)));
+        }
+        
+        public DiagnosticsNode getDetailsSubtree(InspectorInstanceRef instanceRef, string groupName)
+        {
+            return toNode(window.WithBindingFunc(()=> _widgetInspectorService.getDetailsSubtree(instanceRef.id, groupName)));
+        }
+
+        public DiagnosticsNode getSelection(DiagnosticsNode previousSelection, WidgetTreeType treeType, bool localOnly, string groupName)
+        {
+            InspectorInstanceRef previousSelectionRef =
+                previousSelection == null ? null : previousSelection.diagnosticRef;
+            string previousSelectionId = previousSelectionRef == null ? null : previousSelectionRef.id;
+            DiagnosticsNode result = null;
+
+            window.WithBinding(() =>
+            {
+                switch (treeType)
+                {
+                    case WidgetTreeType.Widget:
+                        result = localOnly
+                            ? toNode(_widgetInspectorService.getSelectedSummaryWidget(previousSelectionId, groupName))
+                            : toNode(_widgetInspectorService.getSelectedWidget(previousSelectionId, groupName));
+                        break;
+                    case WidgetTreeType.Render:
+                        result = toNode(
+                            _widgetInspectorService.getSelectedRenderObject(previousSelectionId, groupName));
+                        break;
+                }               
+            });
+ 
+
+            if (result != null && result.diagnosticRef == previousSelectionRef)
+            {
+                return previousSelection;
+            }
+            else
+            {
+                return result;
+            }
+        }
+
+        public bool setSelection(InspectorInstanceRef inspectorInstanceRef, string groupName)
+        {
+            return window.WithBindingFunc(() => _widgetInspectorService.setSelectionById(inspectorInstanceRef.id, groupName));
+        }
+
+        public void setShowInspect(bool show)
+        {
+            window.WithBinding(() =>
+            {
+                _widgetInspectorService.debugShowInspector = show;
+            });
+        }
+        
+        public bool getShowInspect()
+        {
+            return window.WithBindingFunc(() => _widgetInspectorService.debugShowInspector);
+        }
+
+        public List<DiagnosticsNode> getProperties(InspectorInstanceRef inspectorInstanceRef, string groupName)
+        {
+            var list = window.WithBindingFunc(() =>
+                _widgetInspectorService.getProperties(inspectorInstanceRef.id, groupName));
+            return list.Select(json => toNode(json, isProperty: true)).ToList();
+        }
+
+        public void disposeGroup(string groupName)
+        {
+            window.WithBinding(() => _widgetInspectorService.disposeGroup(groupName));
+        }
+
+        private DiagnosticsNode toNode(Dictionary<string, object> json, bool isProperty = false)
+        {
+            if (json == null)
+            {
+                return null;
+            }
+
+            return new DiagnosticsNode(json, isProperty);
+        }
+
+
+        private void developerInspect()
+        {
+            if (selectionChanged != null)
+            {
+                selectionChanged();
+            }
+        }
+    }
+
+    public enum WidgetTreeType
+    {
+        Widget,
+        Render
+    }
+}

Assets/UIWidgets/debugger/inspector_treeview.cs

+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using UIWidgets.foundation;
+using UnityEditor;
+using UnityEditor.IMGUI.Controls;
+using UnityEngine;
+
+namespace UIWidgets.debugger
+{
+    public class InspectorTreeView : TreeView
+    {
+        private static int m_NextId = 0;
+        private DiagnosticsNode m_Node;
+
+        private readonly Dictionary<InspectorInstanceRef, InspectorTreeItem> m_ValueToNode =
+            new Dictionary<InspectorInstanceRef, InspectorTreeItem>();
+
+        public delegate void NodeSelectionChanged(DiagnosticsNode node);
+
+        public NodeSelectionChanged onNodeSelectionChanged;
+
+        public InspectorTreeView(TreeViewState state) : base(state)
+        {
+            // todo better way to enable horizontal scroll in treeview
+            setFieldValueRelection(this, new List<string> {"m_GUI", "m_UseHorizontalScroll"}, true);
+            useScrollView = true;
+            showBorder = true;
+        }
+
+        public DiagnosticsNode node
+        {
+            set
+            {
+                m_Node = value;
+                Reload();
+            }
+
+            get { return m_Node; }
+        }
+
+        public DiagnosticsNode selectedNode
+        {
+            get
+            {
+                var selection = GetSelection();
+                if (selection.Count <= 0)
+                {
+                    return null;
+                }
+
+                var item = FindItem(selection[0], rootItem) as InspectorTreeItem;
+                return item == null ? null : item.node;
+            }
+        }
+
+        public InspectorTreeItem getTreeItemByValueRef(InspectorInstanceRef instanceRef, TreeViewItem from = null)
+        {
+            InspectorTreeItem item;
+            m_ValueToNode.TryGetValue(instanceRef, out item);
+            return item;
+        }
+
+        protected override void RowGUI(TreeView.RowGUIArgs args)
+        {
+            var item = args.item as InspectorTreeItem;
+            if (item == null || item.node == null || !item.node.isProperty)
+            {
+                base.RowGUI(args);
+                return;
+            }
+
+            var node = item.node;
+            var rect = args.rowRect;
+            rect.xMin += GetContentIndent(item);
+
+
+            var xoffset = rect.xMin;
+            if (node.showName && !string.IsNullOrEmpty(node.name))
+            {
+                xoffset = labelGUI(xoffset, rect, string.Format("{0}{1} ", node.name, node.separator));
+            }
+
+            var properties = node.valuePropertiesJson;
+            var iconSize = rect.height;
+            if (node.isColorProperty)
+            {
+                if (Event.current.type == EventType.Repaint)
+                {
+                    int alpha = Util.GetIntProperty(properties, "alpha");
+                    int red = Util.GetIntProperty(properties, "red");
+                    int green = Util.GetIntProperty(properties, "green");
+
+                    int blue = Util.GetIntProperty(properties, "blue");
+                    var color = new UnityEngine.Color(red / 255.0f, green / 255.0f, blue / 255.0f, alpha / 255.0f);
+                    Util.DrawColorIcon(new Rect(xoffset, rect.yMin, rect.height, rect.height), color);
+                }
+                xoffset += iconSize;
+            }
+            labelGUI(xoffset, rect, node.description);
+        }
+
+        protected override void SelectionChanged(IList<int> selectedIds)
+        {
+            DiagnosticsNode node = null;
+            if (selectedIds.Count > 0)
+            {
+                var id = selectedIds[0];
+                var item = FindItem(id, rootItem) as InspectorTreeItem;
+                if (item != null)
+                {
+                    node = item.node;
+                }
+            }
+
+            if (onNodeSelectionChanged != null)
+            {
+                onNodeSelectionChanged(node);
+            }
+        }
+
+        protected override TreeViewItem BuildRoot()
+        {
+            m_NextId = 0;
+            m_ValueToNode.Clear();
+            var root = new TreeViewItem(m_NextId++, -1);
+            root.children = new List<TreeViewItem>();
+            if (m_Node != null)
+            {
+                root.AddChild(build(m_Node, false));
+            }
+
+            SetupDepthsFromParentsAndChildren(root);
+            return root;
+        }
+
+        private float labelGUI(float offset, Rect rowRect, string text)
+        {
+            float minWidth, maxWidth;
+            GUI.skin.label.CalcMinMaxWidth(new GUIContent(text), out minWidth, out maxWidth);
+            rowRect.xMin = offset;
+            rowRect.width = maxWidth;
+            GUI.Label(rowRect, text);
+            return rowRect.xMax;
+        }
+
+        private InspectorTreeItem build(DiagnosticsNode node, bool inProperty)
+        {
+            D.assert(node != null);
+            var item = new InspectorTreeItem(node, m_NextId++);
+            inProperty = inProperty || node.isProperty;
+            if (!inProperty && node.valueRef != null)
+            {
+                m_ValueToNode[node.valueRef] = item;
+            }
+
+            foreach (var propertyNode in node.inlineProperties)
+            {
+                item.AddChild(build(propertyNode, inProperty));
+            }
+
+            var children = node.children;
+            foreach (var childNode in children)
+            {
+                item.AddChild(build(childNode, inProperty));
+            }
+
+            return item;
+        }
+
+        private void setFieldValueRelection(object obj, List<string> fields, object value)
+        {
+            for (var i = 0; i < fields.Count; ++i)
+            {
+                if (obj == null)
+                {
+                    return;
+                }
+
+                FieldInfo fieldInfo = null;
+                for (var type = obj.GetType(); type != null && fieldInfo == null; type = type.BaseType)
+                {
+                    fieldInfo = type.GetField(fields[i],
+                        BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
+                }
+
+                if (fieldInfo == null)
+                {
+                    return;
+                }
+
+                if (i + 1 < fields.Count)
+                {
+                    obj = fieldInfo.GetValue(obj);
+                }
+                else
+                {
+                    fieldInfo.SetValue(obj, value);
+                }
+            }
+        }
+    }
+
+    public class InspectorTreeItem : TreeViewItem
+    {
+        public readonly DiagnosticsNode node;
+
+        public InspectorTreeItem(DiagnosticsNode node, int id) : base(id)
+        {
+            this.node = node;
+        }
+
+
+        public override string displayName
+        {
+            get { return node.name + node.description; }
+        }
+    }
+
+    public static class Util
+    {
+        private const float colorIconMargin = 1.0f;
+
+        public static int GetIntProperty(Dictionary<string, object> properties, string name)
+        {
+            object val;
+            properties.TryGetValue(name, out val);
+            if (val == null)
+            {
+                return -1;
+            }
+
+            return Convert.ToInt32(val);
+        }
+
+        public static void DrawColorIcon(Rect rect, Color color)
+        {
+            var innerRect = new Rect(rect.x + colorIconMargin, rect.y + colorIconMargin,
+                rect.width - 2 * colorIconMargin,
+                rect.height - 2 * colorIconMargin);
+
+            GUI.DrawTexture(innerRect, EditorGUIUtility.whiteTexture, ScaleMode.StretchToFill, true, 0,
+                Color.white, 0, 0);
+
+            GUI.DrawTexture(new Rect(innerRect.x, innerRect.y, innerRect.width / 2,
+                    innerRect.height / 2), EditorGUIUtility.whiteTexture, ScaleMode.StretchToFill, true, 0,
+                Color.gray, 0, 0);
+            GUI.DrawTexture(new Rect(innerRect.x + innerRect.width / 2, innerRect.y + innerRect.height / 2,
+                    innerRect.width / 2,
+                    innerRect.height / 2), EditorGUIUtility.whiteTexture, ScaleMode.StretchToFill, true, 0,
+                Color.gray, 0, 0);
+
+            GUI.DrawTexture(innerRect,
+                EditorGUIUtility.whiteTexture, ScaleMode.StretchToFill, true, 0,
+                color, 0, 0);
+        }
+    }
+}

Assets/UIWidgets/debugger/inspector_treeview.cs.meta

+fileFormatVersion: 2
+guid: f5253bdeb6f94869a44eff557fbf61c5
+timeCreated: 1539849580

Assets/UIWidgets/debugger/inspector_window.cs

+using System.Collections.Generic;
+using System.Linq;
+using RSG.Promises;
+using UIWidgets.editor;
+using UIWidgets.widgets;
+using UnityEditor;
+using UnityEngine;
+
+namespace UIWidgets.debugger
+{
+    public class WidgetsInpsectorWindow: EditorWindow
+    {
+        
+        private InspectorService m_InspectorService;
+        private bool m_ShowInspect;
+        private readonly List<InspectorPanel> m_Panels = new List<InspectorPanel>();
+        private int m_PanelIndex = 0;
+        [SerializeField]
+        private List<PanelState> m_PanelStates = new List<PanelState>();
+        
+        [MenuItem("Window/Analysis/UIWidgets Inspector")]
+        public static void Init()
+        {
+            WidgetsInpsectorWindow window = (WidgetsInpsectorWindow)EditorWindow.GetWindow(typeof(WidgetsInpsectorWindow));
+            window.Show();
+        }
+
+        private void OnGUI()
+        {
+            EditorGUILayout.BeginHorizontal(EditorStyles.toolbar, GUILayout.ExpandWidth(true));
+            DoSelectDropDown();
+            if (m_InspectorService != null)
+            {
+                EditorGUI.BeginChangeCheck();
+                var newShowInspect = GUILayout.Toggle(this.m_ShowInspect, new GUIContent("Inspect Element"), EditorStyles.toolbarButton);
+                if (EditorGUI.EndChangeCheck())
+                {
+                    m_InspectorService.setShowInspect(newShowInspect);
+                }
+            }
+            EditorGUILayout.EndHorizontal();
+            
+            EditorGUILayout.Space();
+          
+            if (m_InspectorService != null)
+            {
+                EditorGUILayout.BeginHorizontal(EditorStyles.toolbar, GUILayout.ExpandWidth(false));
+                m_Panels.Each((pannel, index) =>
+                {
+                    if (GUILayout.Toggle(m_PanelIndex == index, pannel.title, EditorStyles.toolbarButton,
+                        GUILayout.ExpandWidth(false), GUILayout.Width(100)))
+                    {
+                        m_PanelIndex = index;
+                    }
+                });
+                EditorGUILayout.EndHorizontal();
+
+                m_Panels[m_PanelIndex].OnGUI();
+            }
+           
+        }
+        
+        private void DoSelectDropDown()
+        {
+            var currentWindow = m_InspectorService == null ? null : m_InspectorService.window;
+            var selectTitle = currentWindow != null ? currentWindow.editorWindow.titleContent :  new GUIContent("<Please Select>");
+            if (GUILayout.Button(selectTitle, EditorStyles.toolbarDropDown))
+            {
+                var windows = new List<WindowAdapter>(WindowAdapter.windowAdapters.Where(w =>
+                {
+                    return w.WithBindingFunc(() => WidgetsBinding.instance.renderViewElement != null);
+                }));
+                Rect rect = EditorGUILayout.GetControlRect(false, EditorGUIUtility.singleLineHeight, EditorStyles.toolbarDropDown);
+                var menuPos = EditorGUI.IndentedRect(rect);
+                menuPos.y += EditorGUIUtility.singleLineHeight / 2;
+                
+                int selectedIndex = 0;
+                var labels = new GUIContent[windows.Count + 1];
+                labels[0] = new GUIContent("none");
+                for (int i = 0; i < windows.Count; i++)
+                {
+                    labels[i + 1] = windows[i].editorWindow.titleContent;
+                    if (windows[i] == currentWindow)
+                    {
+                        selectedIndex = i + 1;
+                    }
+                }
+                EditorUtility.DisplayCustomMenu(menuPos, labels, selectedIndex, (data, options, selected) =>
+                {
+                    if (selected > 0)
+                    {
+                        var selectedWindow = windows[selected - 1];
+                        if (selectedWindow != currentWindow)
+                        {
+                            inspect(selectedWindow);
+                        }
+                    }
+                    else
+                    {
+                        if (m_InspectorService != null)
+                        {
+                            closeInspect();
+                        }
+                    }
+                }, null);
+            }
+        }
+
+        private void inspect(WindowAdapter window)
+        {
+            if (m_InspectorService != null) // stop previous inspect
+            {
+                closeInspect();
+            }
+
+            m_InspectorService = new InspectorService(window);
+            m_PanelIndex = 0;
+
+            var state = m_PanelStates.Find((s) => s.treeType == WidgetTreeType.Widget);
+            m_Panels.Add(new InspectorPanel(this, WidgetTreeType.Widget, m_InspectorService, 
+                state == null ? (float?)null : state.splitOffset));
+            
+            state = m_PanelStates.Find((s) => s.treeType == WidgetTreeType.Render);
+            m_Panels.Add(new InspectorPanel(this, WidgetTreeType.Render, m_InspectorService,
+                state == null ? (float?)null : state.splitOffset));
+        }
+
+        private void closeInspect()
+        {
+            if (m_InspectorService == null)
+            {
+                return;
+            }
+            m_InspectorService.close();
+            m_InspectorService = null;
+            foreach (var panel in m_Panels)
+            {
+                panel.Close();
+            }
+            m_Panels.Clear();
+            m_ShowInspect = false;
+        }
+
+        private void Update()
+        {
+            if (m_InspectorService != null && !m_InspectorService.active)
+            {
+                closeInspect();
+                Repaint();
+            }
+
+            bool showInspect = false;
+            if (m_InspectorService != null)
+            {
+                showInspect = m_InspectorService.getShowInspect();
+            }
+            if (showInspect != this.m_ShowInspect)
+            {
+                Repaint();
+            }
+            m_ShowInspect = showInspect;
+
+            for (int i = 0; i < m_Panels.Count; i++)
+            {
+                m_Panels[i].visibleToUser = m_PanelIndex == i;
+                m_Panels[i].Update();
+            }
+
+            if (m_Panels.Count > 0)
+            {
+                m_PanelStates = m_Panels.Select(p => p.PanelState).ToList();
+            }
+        }
+        
+        
+        void OnDestroy()
+        {
+            closeInspect();
+        }
+     }
+    
+}

Assets/UIWidgets/debugger/inspector_window.cs.meta

+fileFormatVersion: 2
+guid: 020aab88534245ff8ee7588460f7956f
+timeCreated: 1539240190