Rename DesktopMediaPickerModel[Impl]->[Native]DesktopMediaList

chrome/browser/media/desktop_media_picker_model.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_DESKTOP_MEDIA_PICKER_MODEL_H_
-#define CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_PICKER_MODEL_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/sequenced_task_runner.h"
-#include "content/public/common/desktop_media_id.h"
-#include "ui/gfx/image/image_skia.h"
-
-namespace webrtc {
-class ScreenCapturer;
-class WindowCapturer;
-}
-
-// DesktopMediaPickerModel provides the list of desktop media source (screens,
-// windows, tabs), and their thumbnails, to the desktop media picker dialog. It
-// transparently updates the list in the background, and notifies the desktop
-// media picker when something changes.
-class DesktopMediaPickerModel {
- public:
-  // Interface implemented by the picker dialog to receive notifications when
-  // the model's contents change.
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    virtual void OnSourceAdded(int index) = 0;
-    virtual void OnSourceRemoved(int index) = 0;
-    virtual void OnSourceNameChanged(int index) = 0;
-    virtual void OnSourceThumbnailChanged(int index) = 0;
-  };
-
-  // Struct used to represent each entry in the model.
-  struct Source {
-    Source(content::DesktopMediaID id, const string16& name);
-
-    // Id of the source.
-    content::DesktopMediaID id;
-
-    // Name of the source that should be shown to the user.
-    string16 name;
-
-    // The thumbnail for the source.
-    gfx::ImageSkia thumbnail;
-  };
-
-  virtual ~DesktopMediaPickerModel() {}
-
-  // Sets time interval between updates. By default list of sources and their
-  // thumbnail are updated once per second. If called after StartUpdating() then
-  // it will take effect only after the next update.
-  virtual void SetUpdatePeriod(base::TimeDelta period) = 0;
-
-  // Sets size to which the thumbnails should be scaled. If called after
-  // StartUpdating() then some thumbnails may be still scaled to the old size
-  // until they are updated.
-  virtual void SetThumbnailSize(const gfx::Size& thumbnail_size) = 0;
-
-  // Sets ID of the hosting desktop picker dialog. The window with this ID will
-  // be filtered out from the list of sources.
-  virtual void SetViewDialogWindowId(content::DesktopMediaID::Id dialog_id) = 0;
-
-  // Starts updating the model. The model is initially empty, so OnSourceAdded()
-  // notifications will be generated for each existing source as it is
-  // enumerated. After the initial enumeration the model will be refreshed based
-  // on the update period, and notifications generated only for changes in the
-  // model.
-  virtual void StartUpdating(Observer* observer) = 0;
-
-  virtual int source_count() const = 0;
-  virtual const Source& source(int index) const = 0;
-};
-
-class DesktopMediaPickerModelImpl : public DesktopMediaPickerModel {
- 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).
-  DesktopMediaPickerModelImpl(
-      scoped_ptr<webrtc::ScreenCapturer> screen_capturer,
-      scoped_ptr<webrtc::WindowCapturer> window_capturer);
-  virtual ~DesktopMediaPickerModelImpl();
-
-  // DesktopMediaPickerModel interface.
-  virtual void SetUpdatePeriod(base::TimeDelta period) OVERRIDE;
-  virtual void SetThumbnailSize(const gfx::Size& thumbnail_size) OVERRIDE;
-  virtual void StartUpdating(Observer* observer) OVERRIDE;
-  virtual int source_count() const OVERRIDE;
-  virtual const Source& source(int index) const OVERRIDE;
-  virtual void SetViewDialogWindowId(
-      content::DesktopMediaID::Id 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 string16& name);
-
-    content::DesktopMediaID id;
-    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();
-
-  // 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.
-  void OnSourcesList(const std::vector<SourceDescription>& sources);
-  void OnSourceThumbnail(int index, const gfx::ImageSkia& thumbnail);
-  void OnRefreshFinished();
-
-  // Capturers specified in SetCapturers() and passed to the |worker_| later.
-  scoped_ptr<webrtc::ScreenCapturer> screen_capturer_;
-  scoped_ptr<webrtc::WindowCapturer> window_capturer_;
-
-  // 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::Id view_dialog_id_;
-
-  // The observer passed to StartUpdating().
-  Observer* 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<DesktopMediaPickerModelImpl> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DesktopMediaPickerModelImpl);
-};
-
-#endif  // CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_PICKER_MODEL_H_