SetBounds for ViewTreeNode.

mojo/services/public/cpp/view_manager/lib/view_tree_node.cc

Index: mojo/services/public/cpp/view_manager/lib/view_tree_node.cc
diff --git a/mojo/services/public/cpp/view_manager/lib/view_tree_node.cc b/mojo/services/public/cpp/view_manager/lib/view_tree_node.cc
index e501ea67038ed1b99c4657df2894cb0d6613d410..66331a72c39ff33bf4d7c1c0a339fe8383e42678 100644
--- a/mojo/services/public/cpp/view_manager/lib/view_tree_node.cc
+++ b/mojo/services/public/cpp/view_manager/lib/view_tree_node.cc
@@ -124,6 +124,40 @@ class ScopedSetActiveViewNotifier {
   DISALLOW_COPY_AND_ASSIGN(ScopedSetActiveViewNotifier);
 };
 
+class ScopedSetBoundsNotifier {
+ public:
+  ScopedSetBoundsNotifier(ViewTreeNode* node,
+                          const gfx::Rect& old_bounds,
+                          const gfx::Rect& new_bounds)
+      : node_(node),
+        old_bounds_(old_bounds),
+        new_bounds_(new_bounds) {
+    FOR_EACH_OBSERVER(
+        ViewTreeNodeObserver,
+        *ViewTreeNodePrivate(node_).observers(),
+        OnNodeBoundsChange(node_,
+                           old_bounds_,
+                           new_bounds_,
+                           ViewTreeNodeObserver::DISPOSITION_CHANGING));
+  }
+  ~ScopedSetBoundsNotifier() {
+    FOR_EACH_OBSERVER(
+        ViewTreeNodeObserver,
+        *ViewTreeNodePrivate(node_).observers(),
+        OnNodeBoundsChange(node_,
+                           old_bounds_,
+                           new_bounds_,
+                           ViewTreeNodeObserver::DISPOSITION_CHANGED));
+  }
+
+ private:
+  ViewTreeNode* node_;
+  const gfx::Rect old_bounds_;
+  const gfx::Rect new_bounds_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedSetBoundsNotifier);
+};
+
 class ScopedDestructionNotifier {
  public:
   explicit ScopedDestructionNotifier(ViewTreeNode* node)
@@ -159,6 +193,7 @@ ViewTreeNode* ViewTreeNode::Create(ViewManager* view_manager) {
 }
 
 void ViewTreeNode::Destroy() {
+  // TODO(beng): only proceed if |manager_| OwnsNode(this).
   if (manager_)
     ViewManagerPrivate(manager_).synchronizer()->DestroyViewTreeNode(id_);
   while (!children_.empty())
@@ -166,6 +201,13 @@ void ViewTreeNode::Destroy() {
   LocalDestroy();
 }
 
+void ViewTreeNode::SetBounds(const gfx::Rect& bounds) {
+  // TODO(beng): only proceed if |manager_| OwnsNode(this).
+  if (manager_)
+    ViewManagerPrivate(manager_).synchronizer()->SetBounds(id_, bounds);
+  LocalSetBounds(bounds_, bounds);
+}
+
 void ViewTreeNode::AddObserver(ViewTreeNodeObserver* observer) {
   observers_.AddObserver(observer);
 }
@@ -276,6 +318,13 @@ void ViewTreeNode::LocalSetActiveView(View* view) {
     ViewPrivate(active_view_).set_node(this);
 }
 
+void ViewTreeNode::LocalSetBounds(const gfx::Rect& old_bounds,
+                                  const gfx::Rect& new_bounds) {
+  DCHECK(old_bounds == bounds_);
+  ScopedSetBoundsNotifier notifier(this, old_bounds, new_bounds);
+  bounds_ = new_bounds;
+}
+
 }  // namespace view_manager
 }  // namespace mojo