Allow Chrome apps to create Ash Panels (apps v2)

ash/wm/panel_layout_manager.h

 // Copyright (c) 2012 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 ASH_WM_PANEL_LAYOUT_MANAGER_H_
 #define ASH_WM_PANEL_LAYOUT_MANAGER_H_
 
 #include <list>
 
 #include "ash/ash_export.h"
 #include "ash/launcher/launcher_icon_observer.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/aura/client/activation_change_observer.h"
 #include "ui/aura/layout_manager.h"
+#include "ui/aura/window_observer.h"
 
 namespace aura {
 class Window;
 }
 
 namespace gfx {
 class Rect;
 }
 
 namespace views {
@@ skipping 10 matching lines @@
 // kShellWindowId_PanelContainer) and controls the layout of any windows
 // added to that container.
 //
 // The constructor takes a |panel_container| argument which is expected to set
 // its layout manager to this instance, e.g.:
 // panel_container->SetLayoutManager(new PanelLayoutManager(panel_container));
 
 class ASH_EXPORT PanelLayoutManager
     : public aura::LayoutManager,
       public ash::LauncherIconObserver,
+      public aura::WindowObserver,
       public aura::client::ActivationChangeObserver {
  public:
   explicit PanelLayoutManager(aura::Window* panel_container);
   virtual ~PanelLayoutManager();
 
   void StartDragging(aura::Window* panel);
   void FinishDragging();
 
   void ToggleMinimize(aura::Window* panel);
 
   void SetLauncher(ash::Launcher* launcher);
 
   // Overridden from aura::LayoutManager:
   virtual void OnWindowResized() OVERRIDE;
   virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE;
   virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE;
   virtual void OnWindowRemovedFromLayout(aura::Window* child) OVERRIDE;
   virtual void OnChildWindowVisibilityChanged(aura::Window* child,
                                               bool visibile) OVERRIDE;
   virtual void SetChildBounds(aura::Window* child,
                               const gfx::Rect& requested_bounds) OVERRIDE;
 
   // Overridden from ash::LauncherIconObserver
   virtual void OnLauncherIconPositionsChanged() OVERRIDE;
 
+  // Overridden from aura::WindowObserver
+  virtual void OnWindowPropertyChanged(aura::Window* window,
+                                       const void* key,
+                                       intptr_t old) OVERRIDE;
+
   // Overridden from aura::client::ActivationChangeObserver
   virtual void OnWindowActivated(aura::Window* active,
                                  aura::Window* old_active) OVERRIDE;
 
  private:
   friend class PanelLayoutManagerTest;
 
   typedef std::list<aura::Window*> PanelList;
 
+  void MinimizePanel(aura::Window* panel);
+  void RestorePanel(aura::Window* panel);
+
   // Called whenever the panel layout might change.
   void Relayout();
 
   // Called whenever the panel stacking order needs to be updated (e.g. focus
   // changes or a panel is moved).
   void UpdateStacking(aura::Window* active_panel);
 
   // Trigger a delayed task to update the callout. We use this because
   // otherwise, ShadowController::OnWindowPropertyChanged may be invoked after
   // we've already updated the callout, causing the drop shadow to be stacked on
@@ skipping 26 matching lines @@
   scoped_ptr<views::Widget> callout_widget_;
   base::WeakPtrFactory<PanelLayoutManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PanelLayoutManager);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_PANEL_LAYOUT_MANAGER_H_