Preliminary interactive layout of window manager's demo_launcher

mojo/examples/window_manager/debug_panel.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_EXAMPLES_WINDOW_MANAGER_DEBUG_PANEL_H_
 #define MOJO_EXAMPLES_WINDOW_MANAGER_DEBUG_PANEL_H_
 
 #include <string>
 
 #include "mojo/public/interfaces/service_provider/service_provider.mojom.h"
+#include "mojo/services/public/cpp/view_manager/node_observer.h"
 #include "mojo/services/public/interfaces/navigation/navigation.mojom.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/layout/layout_manager.h"
 #include "ui/views/widget/widget_delegate.h"
 
 namespace views {
 class Label;
 class RadioButton;
 }
 
 namespace mojo {
 
 namespace view_manager {
 class Node;
 }
 
 namespace examples {
 
 namespace {
 const SkColor kColors[] = { SK_ColorYELLOW,
                             SK_ColorRED,
                             SK_ColorGREEN,
                             SK_ColorMAGENTA };
 }
 
 // A panel of controls intended to demonstrate the functionality of the window
 // manager.
-class DebugPanel : public views::LayoutManager, public views::ButtonListener {
+ class DebugPanel : public views::LayoutManager,
+                    public views::ButtonListener,
+                    public view_manager::NodeObserver {
  public:
   class Delegate {
    public:
     virtual void CloseTopWindow() = 0;
     virtual void RequestNavigate(
         uint32 source_node_id, navigation::Target target,
         navigation::NavigationDetailsPtr nav_details) = 0;
    protected:
     virtual ~Delegate(){}
   };
 
   DebugPanel(Delegate* delegate, view_manager::Node* node);
   virtual ~DebugPanel();
 
   navigation::Target navigation_target() const;
 
  private:
   // LayoutManager overrides:
   virtual gfx::Size GetPreferredSize(const views::View* view) const OVERRIDE;
   virtual void Layout(views::View* host) OVERRIDE;
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
+  // NodeObserver overrides:
+  virtual void OnNodeBoundsChanged(view_manager::Node* node,
+                                   const gfx::Rect& old_bounds,
+                                   const gfx::Rect& new_bounds) OVERRIDE;
+
   void Navigate(const std::string& url);
 
   Delegate* delegate_;
   view_manager::Node* node_;
+  views::View* contents_view_;
+  views::Widget* widget_;
 
   views::Label* navigation_target_label_;
   views::RadioButton* navigation_target_new_;
   views::RadioButton* navigation_target_source_;
   views::RadioButton* navigation_target_default_;
 
   size_t next_color_;
   views::Button* colored_square_;
   views::Button* close_last_;
   views::Button* cross_app_;
 
   DISALLOW_COPY_AND_ASSIGN(DebugPanel);
 };
 
 }  // examples
 }  // mojo
 
 #endif  //  MOJO_EXAMPLES_WINDOW_MANAGER_DEBUG_PANEL_H_