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      1 // Copyright 2013 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 CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_ASH_H_
      6 #define CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_ASH_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "base/memory/weak_ptr.h"
     11 #include "base/sequenced_task_runner.h"
     12 #include "chrome/browser/media/desktop_media_list.h"
     13 #include "content/public/browser/desktop_media_id.h"
     14 
     15 class SkBitmap;
     16 
     17 namespace aura {
     18 class Window;
     19 }
     20 
     21 namespace cc {
     22 class CopyOutputResult;
     23 class SingleReleaseCallback;
     24 }
     25 
     26 namespace gfx {
     27 class Image;
     28 }
     29 
     30 // Implementation of DesktopMediaList that shows native screens and
     31 // native windows.
     32 class DesktopMediaListAsh : public DesktopMediaList {
     33  public:
     34   enum SourceTypes {
     35     SCREENS = 1,
     36     WINDOWS = 2,
     37   };
     38 
     39   explicit DesktopMediaListAsh(int source_types);
     40   virtual ~DesktopMediaListAsh();
     41 
     42   // DesktopMediaList interface.
     43   virtual void SetUpdatePeriod(base::TimeDelta period) OVERRIDE;
     44   virtual void SetThumbnailSize(const gfx::Size& thumbnail_size) OVERRIDE;
     45   virtual void StartUpdating(DesktopMediaListObserver* observer) OVERRIDE;
     46   virtual int GetSourceCount() const OVERRIDE;
     47   virtual const Source& GetSource(int index) const OVERRIDE;
     48   virtual void SetViewDialogWindowId(
     49       content::DesktopMediaID::Id dialog_id) OVERRIDE;
     50 
     51  private:
     52   // Struct used to represent sources list the model gets from the Worker.
     53   struct SourceDescription {
     54     SourceDescription(content::DesktopMediaID id, const base::string16& name);
     55 
     56     content::DesktopMediaID id;
     57     base::string16 name;
     58   };
     59 
     60   // Order comparator for sources. Used to sort list of sources.
     61   static bool CompareSources(const SourceDescription& a,
     62                              const SourceDescription& b);
     63 
     64   void Refresh();
     65   void EnumerateWindowsForRoot(
     66       std::vector<DesktopMediaListAsh::SourceDescription>* windows,
     67       aura::Window* root_window,
     68       int container_id);
     69   void EnumerateSources(
     70       std::vector<DesktopMediaListAsh::SourceDescription>* windows);
     71   void CaptureThumbnail(content::DesktopMediaID id, aura::Window* window);
     72   void OnThumbnailCaptured(content::DesktopMediaID id,
     73                            const gfx::Image& image);
     74 
     75   int source_types_;
     76 
     77   // Time interval between mode updates.
     78   base::TimeDelta update_period_;
     79 
     80   // Size of thumbnails generated by the model.
     81   gfx::Size thumbnail_size_;
     82 
     83   // ID of the hosting dialog.
     84   content::DesktopMediaID::Id view_dialog_id_;
     85 
     86   // The observer passed to StartUpdating().
     87   DesktopMediaListObserver* observer_;
     88 
     89   // Current list of sources.
     90   std::vector<Source> sources_;
     91 
     92   int pending_window_capture_requests_;
     93 
     94   base::WeakPtrFactory<DesktopMediaListAsh> weak_factory_;
     95 
     96   DISALLOW_COPY_AND_ASSIGN(DesktopMediaListAsh);
     97 };
     98 
     99 #endif  // CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_ASH_H_
    100