Desktop chrome tab capture-chooseDesktopMedia()

chrome/browser/media/native_desktop_media_list.h

 // Copyright 2013 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 CHROME_BROWSER_MEDIA_NATIVE_DESKTOP_MEDIA_LIST_H_
 #define CHROME_BROWSER_MEDIA_NATIVE_DESKTOP_MEDIA_LIST_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/sequenced_task_runner.h"
 #include "chrome/browser/media/desktop_media_list.h"
 #include "content/public/browser/desktop_media_id.h"
+#include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
+#include "ui/gfx/native_widget_types.h"
 
 namespace webrtc {
 class ScreenCapturer;
 class WindowCapturer;
 }
 
 // Implementation of DesktopMediaList that shows native screens and
 // native windows.
 class NativeDesktopMediaList : public DesktopMediaList {
  public:
   // Caller may pass NULL for either of the arguments in case when only some
   // types of sources the model should be populated with (e.g. it will only
   // contain windows, if |screen_capturer| is NULL).
-  NativeDesktopMediaList(
-      scoped_ptr<webrtc::ScreenCapturer> screen_capturer,
-      scoped_ptr<webrtc::WindowCapturer> window_capturer);
+  NativeDesktopMediaList(scoped_ptr<webrtc::ScreenCapturer> screen_capturer,
+                         scoped_ptr<webrtc::WindowCapturer> window_capturer,
+                         bool tab_capture_enabled);
   ~NativeDesktopMediaList() override;
 
   // DesktopMediaList interface.
   void SetUpdatePeriod(base::TimeDelta period) override;
   void SetThumbnailSize(const gfx::Size& thumbnail_size) override;
   void StartUpdating(DesktopMediaListObserver* observer) override;
   int GetSourceCount() const override;
   const Source& GetSource(int index) const override;
   void SetViewDialogWindowId(content::DesktopMediaID dialog_id) override;
 
  private:
   class Worker;
   friend class Worker;
 
   // Struct used to represent sources list the model gets from the Worker.
   struct SourceDescription {
     SourceDescription(content::DesktopMediaID id, const base::string16& name);
-
     content::DesktopMediaID id;
     base::string16 name;
   };
 
   // Order comparator for sources. Used to sort list of sources.
   static bool CompareSources(const SourceDescription& a,
                              const SourceDescription& b);
 
   // Post a task for the |worker_| to update list of windows and get thumbnails.
   void Refresh();
 
+  // Get the source descriptions for tabs.
+  bool GetTabSourceDescription(std::vector<SourceDescription>& tab_sources);
+
   // Called by |worker_| to refresh the model. First it posts tasks for
   // OnSourcesList() with the fresh list of sources, then follows with
-  // OnSourceThumbnail() for each changed thumbnail and then calls
-  // OnRefreshFinished() at the end.
+  // OnSourceThumbnail() or  OnSourceTabThumbnail() for each changed thumbnail
+  // and then calls OnRefreshFinished() at the end.
   void OnSourcesList(const std::vector<SourceDescription>& sources);
   void OnSourceThumbnail(int index, const gfx::ImageSkia& thumbnail);
+  void OnSourceTabThumbnail(SourceDescription source);
   void OnRefreshFinished();
 
   // Capturers specified in SetCapturers() and passed to the |worker_| later.
   scoped_ptr<webrtc::ScreenCapturer> screen_capturer_;
   scoped_ptr<webrtc::WindowCapturer> window_capturer_;
 
+  // Whether allow tab capture.
+  bool tab_capture_enabled_;

[miu, 2015/12/08 01:54:38]

Should be: const bool tab_capture_enabled_ (since this value should not be
changed after construction)

[GeorgeZ, 2015/12/09 19:36:37]

Done.

+
+  // Map between tab id and corresponding favicon.
+  std::map<int, gfx::ImageSkia> tab_icon_map_;
+
   // Time interval between mode updates.
   base::TimeDelta update_period_;
 
   // Size of thumbnails generated by the model.
   gfx::Size thumbnail_size_;
 
   // ID of the hosting dialog.
   content::DesktopMediaID view_dialog_id_;
 
   // The observer passed to StartUpdating().
   DesktopMediaListObserver* observer_;
 
   // Task runner used for the |worker_|.
   scoped_refptr<base::SequencedTaskRunner> capture_task_runner_;
 
   // An object that does all the work of getting list of sources on a background
   // thread (see |capture_task_runner_|). Destroyed on |capture_task_runner_|
   // after the model is destroyed.
   scoped_ptr<Worker> worker_;
 
   // Current list of sources.
   std::vector<Source> sources_;
 
   base::WeakPtrFactory<NativeDesktopMediaList> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeDesktopMediaList);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_NATIVE_DESKTOP_MEDIA_LIST_H_