Use the media galleries controller interface for the scan result dialog.

chrome/browser/media_galleries/media_galleries_scan_result_dialog_controller.h

-// Copyright 2014 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_GALLERIES_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_CONTROLLER_H_
-#define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_CONTROLLER_H_
-
-#include <map>
-#include <set>
-#include <string>
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/strings/string16.h"
-#include "chrome/browser/media_galleries/media_galleries_preferences.h"
-#include "components/storage_monitor/removable_storage_observer.h"
-
-namespace content {
-class WebContents;
-}
-
-namespace extensions {
-class Extension;
-}
-
-namespace ui {
-class MenuModel;
-}
-
-class MediaGalleriesScanResultDialogController;
-class MediaGalleryContextMenu;
-class Profile;
-
-// The view.
-class MediaGalleriesScanResultDialog {
- public:
-  virtual ~MediaGalleriesScanResultDialog();
-
-  // Tell the dialog to update its display list of scan results.
-  virtual void UpdateResults() = 0;
-
-  // Constructs a platform-specific dialog owned and controlled by |controller|.
-  static MediaGalleriesScanResultDialog* Create(
-      MediaGalleriesScanResultDialogController* controller);
-
- private:
-  friend class TestMediaGalleriesAddScanResultsFunction;
-
-  virtual void AcceptDialogForTesting() = 0;
-};
-
-// The controller is responsible for handling the logic of the dialog and
-// interfacing with the model (i.e., MediaGalleriesPreferences). It shows
-// the dialog and owns itself.
-class MediaGalleriesScanResultDialogController
-    : public storage_monitor::RemovableStorageObserver,
-      public MediaGalleriesPreferences::GalleryChangeObserver {
- public:
-  struct ScanResult {
-    ScanResult(const MediaGalleryPrefInfo& pref_info, bool selected)
-        : pref_info(pref_info),
-          selected(selected) {
-    }
-    ScanResult() : selected(false) {}
-
-    MediaGalleryPrefInfo pref_info;
-    bool selected;
-  };
-  typedef std::vector<ScanResult> OrderedScanResults;
-
-  // |preferences| must be already initialized.
-  static size_t ScanResultCountForExtension(
-      MediaGalleriesPreferences* preferences,
-      const extensions::Extension* extension);
-
-  // The constructor creates a dialog controller which owns itself.
-  MediaGalleriesScanResultDialogController(
-      content::WebContents* web_contents,
-      const extensions::Extension& extension,
-      const base::Closure& on_finish);
-
-  // The title of the dialog view.
-  base::string16 GetHeader() const;
-
-  // Explanatory text directly below the title.
-  base::string16 GetSubtext() const;
-
-  // Get the scan results and their current selection state.
-  virtual OrderedScanResults GetGalleryList() const;
-
-  // A checkbox beside a scan result was toggled.
-  virtual void DidToggleGalleryId(MediaGalleryPrefId pref_id, bool selected);
-
-  // A folder viewer icon was clicked.
-  virtual void DidClickOpenFolderViewer(MediaGalleryPrefId pref_id) const;
-
-  // The forget command in the context menu was selected.
-  virtual void DidForgetGallery(MediaGalleryPrefId pref_id);
-
-  // The dialog is being deleted.
-  virtual void DialogFinished(bool accepted);
-
-  virtual content::WebContents* web_contents();
-
-  ui::MenuModel* GetContextMenu(MediaGalleryPrefId id);
-
- protected:
-  typedef base::Callback<MediaGalleriesScanResultDialog* (
-      MediaGalleriesScanResultDialogController*)> CreateDialogCallback;
-  typedef std::map<MediaGalleryPrefId, ScanResult> ScanResults;
-
-  // Updates |scan_results| from |preferences|. Will not add galleries from
-  // |ignore_list| onto |scan_results|.
-  static void UpdateScanResultsFromPreferences(
-      MediaGalleriesPreferences* preferences,
-      const extensions::Extension* extension,
-      MediaGalleryPrefIdSet ignore_list,
-      ScanResults* scan_results);
-
-  // Used for unit tests.
-  MediaGalleriesScanResultDialogController(
-      const extensions::Extension& extension,
-      MediaGalleriesPreferences* preferences_,
-      const CreateDialogCallback& create_dialog_callback,
-      const base::Closure& on_finish);
-
-  virtual ~MediaGalleriesScanResultDialogController();
-
- private:
-  friend class MediaGalleriesScanResultDialogControllerTest;
-  friend class MediaGalleriesScanResultDialogCocoaTest;
-  friend class TestMediaGalleriesAddScanResultsFunction;
-
-  // Bottom half of constructor -- called when |preferences_| is initialized.
-  void OnPreferencesInitialized();
-
-  // Used to keep the dialog in sync with the preferences.
-  void OnPreferenceUpdate(const std::string& extension_id);
-
-  // Used to keep the dialog in sync with attached and detached devices.
-  void OnRemovableDeviceUpdate(const std::string device_id);
-
-  Profile* GetProfile() const;
-
-  // RemovableStorageObserver implementation.
-  // Used to keep dialog in sync with removable device status.
-  virtual void OnRemovableStorageAttached(
-      const storage_monitor::StorageInfo& info) OVERRIDE;
-  virtual void OnRemovableStorageDetached(
-      const storage_monitor::StorageInfo& info) OVERRIDE;
-
-  // MediaGalleriesPreferences::GalleryChangeObserver implementations.
-  // Used to keep the dialog in sync when the preferences change.
-  virtual void OnPermissionAdded(MediaGalleriesPreferences* pref,
-                                 const std::string& extension_id,
-                                 MediaGalleryPrefId pref_id) OVERRIDE;
-  virtual void OnPermissionRemoved(MediaGalleriesPreferences* pref,
-                                   const std::string& extension_id,
-                                   MediaGalleryPrefId pref_id) OVERRIDE;
-  virtual void OnGalleryAdded(MediaGalleriesPreferences* pref,
-                              MediaGalleryPrefId pref_id) OVERRIDE;
-  virtual void OnGalleryRemoved(MediaGalleriesPreferences* pref,
-                                MediaGalleryPrefId pref_id) OVERRIDE;
-  virtual void OnGalleryInfoUpdated(MediaGalleriesPreferences* pref,
-                                    MediaGalleryPrefId pref_id) OVERRIDE;
-
-  // The web contents from which the request originated.
-  content::WebContents* web_contents_;
-
-  // This is just a reference, but it's assumed that it won't become invalid
-  // while the dialog is showing.
-  const extensions::Extension* extension_;
-
-  // The scan results that aren't blacklisted and this extension doesn't
-  // already have access to.
-  ScanResults scan_results_;
-
-  // The set of scan results which should be removed (blacklisted) - unless
-  // the user clicks Cancel.
-  MediaGalleryPrefIdSet results_to_remove_;
-
-  // Callback to run when the dialog closes.
-  base::Closure on_finish_;
-
-  // The model that tracks galleries and extensions' permissions.
-  // This is the authoritative source for gallery information.
-  MediaGalleriesPreferences* preferences_;
-
-  // Creates the dialog. Only changed for unit tests.
-  CreateDialogCallback create_dialog_callback_;
-
-  // The view that's showing.
-  scoped_ptr<MediaGalleriesScanResultDialog> dialog_;
-
-  scoped_ptr<MediaGalleryContextMenu> context_menu_;
-
-  DISALLOW_COPY_AND_ASSIGN(MediaGalleriesScanResultDialogController);
-};
-
-#endif  // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_CONTROLLER_H_