Adding new maximize menu according to spec

ash/wm/workspace/frame_maximize_button.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_WORKSPACE_FRAME_MAXIMIZE_BUTTON_H_
 #define ASH_WM_WORKSPACE_FRAME_MAXIMIZE_BUTTON_H_
 
 #include "ash/ash_export.h"
+#include "ash/wm/workspace/snap_types.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer.h"
+#include "ui/aura/window_observer.h"
 #include "ui/views/controls/button/image_button.h"
 
 namespace views {
 class NonClientFrameView;
 }
 
 namespace ash {
 
 namespace internal {
 class PhantomWindowController;
 class SnapSizer;
 }
 
+class MaximizeBubbleController;
+
 // Button used for the maximize control on the frame. Handles snapping logic.
-class ASH_EXPORT FrameMaximizeButton : public views::ImageButton {
+class ASH_EXPORT FrameMaximizeButton : public views::ImageButton,
+                                       public aura::WindowObserver {
  public:
   FrameMaximizeButton(views::ButtonListener* listener,
                       views::NonClientFrameView* frame);
   virtual ~FrameMaximizeButton();
 
+  // WindowObserver overrides:
+  virtual void OnWindowBoundsChanged(aura::Window* window,
+                                     const gfx::Rect& old_bounds,
+                                     const gfx::Rect& new_bounds) OVERRIDE;
+  virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
+
   // ImageButton overrides:
   virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseEntered(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const views::MouseEvent& event) OVERRIDE;
   virtual bool OnMouseDragged(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseCaptureLost() OVERRIDE;
   virtual ui::GestureStatus OnGestureEvent(
       const views::GestureEvent& event) OVERRIDE;
 
- protected:
-  // ImageButton overrides:
-  virtual gfx::ImageSkia GetImageToPaint() OVERRIDE;
+  // Updates |snap_type_| based on a a given snap type. This is used by
+  // external hover events from the button menu.
+  void SnapButtonHovered(workspace::SnapType type);
+
+  // The user clicked the |type| button and the action needs to be performed,
+  // which will at the same time close the window.
+  void ExecuteSnapAndCloseMenu(workspace::SnapType type);
+
+  // Remove the maximize menu from the screen (and destroy it).
+  void DestroyMaximizeMenu();
+
+  // Returns true when the user clicks and drags the button.
+  bool is_snap_enabled() { return is_snap_enabled_; }
 
  private:
   class EscapeEventFilter;
 
-  // Where to snap to.
-  enum SnapType {
-    SNAP_LEFT,
-    SNAP_RIGHT,
-    SNAP_MAXIMIZE,
-    SNAP_MINIMIZE,
-    SNAP_RESTORE,
-    SNAP_NONE
-  };
-
   // Initializes the snap-gesture based on the event. This should only be called
   // when the event is confirmed to have started a snap gesture.
   void ProcessStartEvent(const views::LocatedEvent& event);
 
   // Updates the snap-state based on the current event. This should only be
   // called after the snap gesture has already started.
   void ProcessUpdateEvent(const views::LocatedEvent& event);
 
   // Returns true if the window was snapped. Returns false otherwise.
   bool ProcessEndEvent(const views::LocatedEvent& event);
 
   // Cancels snap behavior.
-  void Cancel();
+  void Cancel(bool keep_menu_open);
 
   // Installs/uninstalls an EventFilter to track when escape is pressed.
   void InstallEventFilter();
   void UninstallEventFilter();
 
   // Updates the snap position from the event location. This is invoked by
   // |update_timer_|.
   void UpdateSnapFromEventLocation();
 
   // Updates |snap_type_| based on a mouse drag.
   void UpdateSnap(const gfx::Point& location);
 
   // Returns the type of snap based on the specified location.
-  SnapType SnapTypeForLocation(const gfx::Point& location) const;
+  workspace::SnapType SnapTypeForLocation(const gfx::Point& location) const;
 
   // Returns the bounds of the resulting window for the specified type.
-  gfx::Rect ScreenBoundsForType(SnapType type) const;
+  gfx::Rect ScreenBoundsForType(workspace::SnapType type) const;
 
   // Converts location to screen coordinates and returns it. These are the
   // coordinates used by the SnapSizer.
   gfx::Point LocationForSnapSizer(const gfx::Point& location) const;
 
   // Snaps the window to the current snap position.
   void Snap();
 
   // Frame that the maximize button acts on.
   views::NonClientFrameView* frame_;
 
   // Renders the snap position.
   scoped_ptr<internal::PhantomWindowController> phantom_window_;
 
   // Is snapping enabled? Set on press so that in drag we know whether we
   // should show the snap locations.
   bool is_snap_enabled_;
 
   // Did the user drag far enough to trigger snapping?
   bool exceeded_drag_threshold_;
 
+  // This is the window_ we are contained in.
+  aura::Window* window_;
+
   // Location of the press.
   gfx::Point press_location_;
 
   // Current snap type.
-  SnapType snap_type_;
+  workspace::SnapType snap_type_;
 
   scoped_ptr<internal::SnapSizer> snap_sizer_;
 
   scoped_ptr<EscapeEventFilter> escape_event_filter_;
 
   base::OneShotTimer<FrameMaximizeButton> update_timer_;
 
+  scoped_ptr<MaximizeBubbleController> maximizer_;
+
   DISALLOW_COPY_AND_ASSIGN(FrameMaximizeButton);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_FRAME_MAXIMIZE_BUTTON_H_