Adds proper layout measurement for the ReactTextViewManager.

ReactWindows/Playground/Resources/main.dev.jsbundle

@@ -1194,7 +1194,9 @@ var ReactRoot=React.createClass({displayName:'ReactRoot',
 render:function(){
 return (
 React.createElement(View,{elevation:'1.0'},
-React.createElement(Text,null,'Hello React Native')));}});
+React.createElement(View,{style:{marginLeft:200}},
+React.createElement(View,{style:{marginTop:10}},
+React.createElement(Text,{style:{color:'red'}},"Hello React Native")))));}});
 
 
 

ReactWindows/ReactNative/ReactNative.csproj

@@ -244,13 +244,13 @@
     <Compile Include="UIManager\UIViewOperationQueue.cs" />
     <Compile Include="UIManager\ViewAtIndex.cs" />
     <Compile Include="UIManager\ViewGroupManager.cs" />
-    <Compile Include="UIManager\ViewGroupManager.Generic.cs" />
+    <Compile Include="UIManager\PanelViewGroupManager.cs" />
     <Compile Include="UIManager\ViewManager.cs" />
     <Compile Include="UIManager\ViewManager.Generic.cs" />
     <Compile Include="UIManager\ViewManagerRegistry.cs" />
+    <Compile Include="Views\Scroll\ReactScrollViewManager.cs" />
     <Compile Include="Views\ViewManagersPropertyCache.cs" />
     <Compile Include="UIManager\ViewProperties.cs" />
-	<Compile Include="Views\Text\InlineManager.cs" />
     <Compile Include="Views\Text\ReactRawTextManager.cs" />
     <Compile Include="Views\Text\ReactTextShadowNode.cs" />
     <Compile Include="Views\Text\ReactTextViewManager.cs" />
@@ -262,8 +262,8 @@
     <Compile Include="Views\View\ReactPanel.cs" />
     <Compile Include="Views\View\ReactViewManager.cs" />
     <Compile Include="Views\TextInput\ReactTextInputManager.cs" />
-	<Compile Include="Modules\Toast\ToastHelper.cs" />
-	<Compile Include="Modules\Toast\ToastModule.cs" />
+    <Compile Include="Modules\Toast\ToastHelper.cs" />
+    <Compile Include="Modules\Toast\ToastModule.cs" />
     <EmbeddedResource Include="Properties\ReactNative.rd.xml" />
   </ItemGroup>
   <ItemGroup>

ReactWindows/ReactNative/Shell/MainReactPackage.cs

@@ -2,6 +2,7 @@
 using ReactNative.Modules.Core;
 using ReactNative.Modules.WebSocket;
 using ReactNative.UIManager;
+using ReactNative.Views.Scroll;
 using ReactNative.Views.Text;
 using ReactNative.Views.TextInput;
 using ReactNative.Views.View;
@@ -39,7 +40,7 @@ public IReadOnlyList<ViewManager> CreateViewManagers(
                 //new ReactProgressBarViewManager(),
                 new ReactRawTextManager(),
                 //new RecyclerViewBackedScrollViewManager(),
-                //new ReactScrollViewManager(),
+                new ReactScrollViewManager(),
                 //new ReactSwitchManager(),
                 new ReactTextInputManager(),
                 new ReactTextViewManager(),

ReactWindows/ReactNative/UIManager/NativeViewHierarchyManager.cs

@@ -133,8 +133,23 @@ public void UpdateLayout(int parentTag, int tag, int x, int y, int width, int he
                 .With("tag", tag))
             {
                 var viewToUpdate = ResolveView(tag);
-                // TODO: call viewToUpdate.Measure()
-                //throw new NotImplementedException();
+
+                var parentViewManager = default(ViewManager);
+                var parentViewGroupManager = default(ViewGroupManager);
+                if (!_tagsToViewManagers.TryGetValue(parentTag, out parentViewManager) || 
+                    (parentViewGroupManager = parentViewManager as ViewGroupManager) == null)
+                {
+                    throw new InvalidOperationException(
+                        string.Format(
+                            CultureInfo.InvariantCulture,
+                            "Trying to use view with tag '{0}' as a parent, but its manager doesn't extend ViewGroupManager.",
+                            tag));
+                }
+
+                if (!parentViewGroupManager.NeedsCustomLayoutForChildren)
+                {
+                    UpdateLayout(viewToUpdate, x, y, width, height);
+                }
             }
         }
 
@@ -189,7 +204,7 @@ public void ManageChildren(int tag, int[] indicesToRemove, ViewAtIndex[] viewsTo
             }
 
             var viewGroupManager = (ViewGroupManager)viewManager;
-            var viewToManage = (Panel)_tagsToViews[tag];
+            var viewToManage = _tagsToViews[tag];
 
             var lastIndexToRemove = viewGroupManager.GetChildCount(viewToManage);
             if (indicesToRemove != null)
@@ -513,5 +528,13 @@ private void DropView(FrameworkElement view)
             _tagsToViews.Remove(tag);
             _tagsToViewManagers.Remove(tag);
         }
+
+        private void UpdateLayout(FrameworkElement viewToUpdate, int x, int y, int width, int height)
+        {
+            viewToUpdate.Width = width;
+            viewToUpdate.Height = height;
+            Canvas.SetLeft(viewToUpdate, x);
+            Canvas.SetTop(viewToUpdate, y);
+        }
     }
 }

ReactWindows/ReactNative/UIManager/NativeViewHierarchyOptimizer.cs

@@ -79,7 +79,7 @@ public void HandleCreateView(
             _uiViewOperationQueue.EnqueueCreateView(
                     themedContext,
                     node.ReactTag,
-                    node.ViewClassName,
+                    node.ViewClass,
                     initialProperties);
 #else
             var isLayoutOnly = node.ViewClass == ViewProperties.ViewClassName
@@ -376,7 +376,7 @@ private void ApplyLayoutRecursive(ReactShadowNode node, int x, int y)
             if (!node.IsLayoutOnly && node.NativeParent != null)
             {
                 _uiViewOperationQueue.EnqueueUpdateLayout(
-                    node.Parent.ReactTag,
+                    node.NativeParent.ReactTag,
                     node.ReactTag,
                     x,
                     y,

ReactWindows/ReactNative/UIManager/ViewGroupManager.Generic.cs → ReactWindows/ReactNative/UIManager/PanelViewGroupManager.cs

@@ -9,7 +9,7 @@ namespace ReactNative.UIManager
     /// extending <see cref="Panel"/>.
     /// </summary>
     /// <typeparam name="TPanel">Type of panel.</typeparam>
-    public abstract class ViewGroupManager<TPanel> : ViewGroupManager
+    public abstract class PanelViewGroupManager<TPanel> : ViewGroupManager
         where TPanel : Panel
     {
         /// <summary>
@@ -53,6 +53,57 @@ public sealed override void UpdateExtraData(FrameworkElement root, object extraD
             UpdateExtraData((TPanel)root, extraData);
         }
 
+        /// <summary>
+        /// Gets the number of children in the view group.
+        /// </summary>
+        /// <param name="parent">The view group.</param>
+        /// <returns>The number of children.</returns>
+        public sealed override int GetChildCount(FrameworkElement parent)
+        {
+            return GetChildCount((TPanel)parent);
+        }
+
+        /// <summary>
+        /// Gets the child at the given index.
+        /// </summary>
+        /// <param name="parent">The parent view.</param>
+        /// <param name="index">The index.</param>
+        /// <returns>The child view.</returns>
+        public sealed override FrameworkElement GetChildAt(FrameworkElement parent, int index)
+        {
+            return GetChildAt((TPanel)parent, index);
+        }
+
+        /// <summary>
+        /// Adds a child at the given index.
+        /// </summary>
+        /// <param name="parent">The parent view.</param>
+        /// <param name="child">The child view.</param>
+        /// <param name="index">The index.</param>
+        public sealed override void AddView(FrameworkElement parent, FrameworkElement child, int index)
+        {
+            AddView((TPanel)parent, child, index);
+        }
+
+        /// <summary>
+        /// Removes the child at the given index.
+        /// </summary>
+        /// <param name="parent">The view group.</param>
+        /// <param name="index">The index.</param>
+        public override void RemoveChildAt(FrameworkElement parent, int index)
+        {
+            RemoveChildAt((TPanel)parent, index);
+        }
+
+        /// <summary>
+        /// Removes all children from the view group.
+        /// </summary>
+        /// <param name="parent">The view group.</param>
+        public override void RemoveAllChildren(FrameworkElement parent)
+        {
+            RemoveAllChildren((TPanel)parent);
+        }
+
         /// <summary>
         /// Subclasses can override this method to install custom event 
         /// emitters on the given view.
@@ -172,5 +223,56 @@ protected virtual void ReceiveCommand(TPanel view, int commandId, JArray args)
         protected virtual void UpdateExtraData(TPanel root, object extraData)
         {
         }
+
+        /// <summary>
+        /// Gets the number of children in the view group.
+        /// </summary>
+        /// <param name="parent">The view group.</param>
+        /// <returns>The number of children.</returns>
+        protected virtual int GetChildCount(TPanel parent)
+        {
+            return parent.Children.Count;
+        }
+
+        /// <summary>
+        /// Gets the child at the given index.
+        /// </summary>
+        /// <param name="parent">The parent view.</param>
+        /// <param name="index">The index.</param>
+        /// <returns>The child view.</returns>
+        protected virtual FrameworkElement GetChildAt(TPanel parent, int index)
+        {
+            return (FrameworkElement)parent.Children[index];
+        }
+
+        /// <summary>
+        /// Adds a child at the given index.
+        /// </summary>
+        /// <param name="parent">The parent view.</param>
+        /// <param name="child">The child view.</param>
+        /// <param name="index">The index.</param>
+        protected virtual void AddView(TPanel parent, FrameworkElement child, int index)
+        {
+            parent.Children.Insert(index, child);
+        }
+
+        /// <summary>
+        /// Removes the child at the given index.
+        /// </summary>
+        /// <param name="parent">The view group.</param>
+        /// <param name="index">The index.</param>
+        protected virtual void RemoveChildAt(TPanel parent, int index)
+        {
+            parent.Children.RemoveAt(index);
+        }
+
+        /// <summary>
+        /// Removes all children from the view group.
+        /// </summary>
+        /// <param name="parent">The view group.</param>
+        protected virtual void RemoveAllChildren(TPanel parent)
+        {
+            parent.Children.Clear();
+        }
     }
 }

ReactWindows/ReactNative/UIManager/RootViewManager.cs

@@ -1,11 +1,9 @@
-using Windows.UI.Xaml;
-
-namespace ReactNative.UIManager
+namespace ReactNative.UIManager
 {
     /// <summary>
     /// View manager for react root view components.
     /// </summary>
-    public class RootViewManager : ViewGroupManager
+    public class RootViewManager : PanelViewGroupManager<SizeMonitoringPanel>
     {
         /// <summary>
         /// The name of the react root view.
@@ -23,7 +21,7 @@ public override string Name
         /// </summary>
         /// <param name="reactContext">The react context.</param>
         /// <returns>The view instance.</returns>
-        protected override FrameworkElement CreateViewInstance(ThemedReactContext reactContext)
+        protected override SizeMonitoringPanel CreateViewInstanceCore(ThemedReactContext reactContext)
         {
             return new SizeMonitoringPanel();
         }

ReactWindows/ReactNative/UIManager/UIImplementation.cs

@@ -463,6 +463,8 @@ public void MeasureLayoutRelativeToParent(int tag, ICallback errorCallback, ICal
         /// <param name="batchId">The batch identifier.</param>
         public void DispatchViewUpdates(EventDispatcher eventDispatcher, int batchId)
         {
+            DispatcherHelpers.AssertOnDispatcher();
+
             foreach (var tag in _shadowNodeRegistry.RootNodeTags)
             {
                 var cssRoot = _shadowNodeRegistry.GetNode(tag);
@@ -472,7 +474,7 @@ public void DispatchViewUpdates(EventDispatcher eventDispatcher, int batchId)
             }
 
             _nativeViewHierarchyOptimizer.OnBatchComplete();
-            _operationsQueue.DispatchViewUpdates(batchId);
+            _operationsQueue.ExecuteOperations(batchId);
         }
 
         /// <summary>

ReactWindows/ReactNative/UIManager/UIManagerModule.cs

@@ -387,13 +387,16 @@ public void OnBatchComplete()
         {
             var batchId = _batchId++;
 
-            using (Tracer.Trace(Tracer.TRACE_TAG_REACT_BRIDGE, "onBatchCompleteUI")
-                .With("BatchId", batchId))
+            Context.RunOnDispatcherQueueThread(() =>
             {
-                _uiImplementation.DispatchViewUpdates(_eventDispatcher, batchId);
-            }
-
-            // TODO: coordinate with UI operations?
+                using (Tracer.Trace(Tracer.TRACE_TAG_REACT_BRIDGE, "onBatchCompleteUI")
+                    .With("BatchId", batchId))
+                {
+                    _uiImplementation.DispatchViewUpdates(_eventDispatcher, batchId);
+                }
+            });
+
+            // TODO: coordinate with UI operations a la choreographer?
             _eventDispatcher.OnBatchComplete();
         }
 

ReactWindows/ReactNative/UIManager/UIViewOperationQueue.cs

@@ -312,8 +312,10 @@ public void EnqueueFindTargetForTouch(
         /// Dispatches the view updates.
         /// </summary>
         /// <param name="batchId">The batch identifier.</param>
-        internal void DispatchViewUpdates(int batchId)
+        internal void ExecuteOperations(int batchId)
         {
+            DispatcherHelpers.AssertOnDispatcher();
+
             var operations = default(IList<Action>);
             lock (_operationsLock)
             {
@@ -324,20 +326,17 @@ internal void DispatchViewUpdates(int batchId)
                 }
             }
 
-            _reactContext.RunOnDispatcherQueueThread(() =>
+            using (Tracer.Trace(Tracer.TRACE_TAG_REACT_BRIDGE, "DispatchUI")
+                .With("BatchId", batchId))
             {
-                using (Tracer.Trace(Tracer.TRACE_TAG_REACT_BRIDGE, "DispatchUI")
-                    .With("BatchId", batchId))
+                if (operations != null)
                 {
-                    if (operations != null)
+                    foreach (var operation in operations)
                     {
-                        foreach (var operation in operations)
-                        {
-                            operation();
-                        }
+                        operation();
                     }
                 }
-            });
+            }
         }
 
         private void EnqueueOperation(Action action)