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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_
      6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_
      7 
      8 #include <set>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "ui/views/views_export.h"
     13 #include "ui/wm/core/native_cursor_manager.h"
     14 
     15 namespace aura {
     16 class WindowTreeHost;
     17 }
     18 
     19 namespace ui {
     20 class CursorLoader;
     21 }
     22 
     23 namespace wm {
     24 class NativeCursorManagerDelegate;
     25 }
     26 
     27 namespace views {
     28 class DesktopCursorLoaderUpdater;
     29 
     30 // A NativeCursorManager that performs the desktop-specific setting of cursor
     31 // state. Similar to AshNativeCursorManager, it also communicates these changes
     32 // to all root windows.
     33 class VIEWS_EXPORT DesktopNativeCursorManager
     34     : public wm::NativeCursorManager {
     35  public:
     36   DesktopNativeCursorManager(
     37       scoped_ptr<DesktopCursorLoaderUpdater> cursor_loader_updater);
     38   virtual ~DesktopNativeCursorManager();
     39 
     40   // Builds a cursor and sets the internal platform representation.
     41   gfx::NativeCursor GetInitializedCursor(int type);
     42 
     43   // Adds |host| to the set |hosts_|.
     44   void AddHost(aura::WindowTreeHost* host);
     45 
     46   // Removes |host| from the set |hosts_|.
     47   void RemoveHost(aura::WindowTreeHost* host);
     48 
     49  private:
     50   // Overridden from wm::NativeCursorManager:
     51   virtual void SetDisplay(
     52       const gfx::Display& display,
     53       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
     54   virtual void SetCursor(
     55       gfx::NativeCursor cursor,
     56       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
     57   virtual void SetVisibility(
     58       bool visible,
     59       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
     60   virtual void SetCursorSet(
     61       ui::CursorSetType cursor_set,
     62       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
     63   virtual void SetMouseEventsEnabled(
     64       bool enabled,
     65       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
     66 
     67   // The set of hosts to notify of changes in cursor state.
     68   typedef std::set<aura::WindowTreeHost*> Hosts;
     69   Hosts hosts_;
     70 
     71   scoped_ptr<DesktopCursorLoaderUpdater> cursor_loader_updater_;
     72   scoped_ptr<ui::CursorLoader> cursor_loader_;
     73 
     74   DISALLOW_COPY_AND_ASSIGN(DesktopNativeCursorManager);
     75 };
     76 
     77 }  // namespace views
     78 
     79 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_
     80 
     81