chrome/browser/media_galleries/media_galleries_scan_result_dialog_controller.h

   1 // Copyright 2014 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_GALLERIES_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_CONTROLLER_H_
   6 #define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_CONTROLLER_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11
  12 #include "base/callback.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/strings/string16.h"
  15 #include "chrome/browser/media_galleries/media_galleries_preferences.h"
  16 #include "chrome/browser/storage_monitor/removable_storage_observer.h"
  17
  18 namespace content {
  19 class WebContents;
  20 }
  21
  22 namespace extensions {
  23 class Extension;
  24 }
  25
  26 namespace ui {
  27 class MenuModel;
  28 }
  29
  30 class MediaGalleriesScanResultDialogController;
  31 class MediaGalleryContextMenu;
  32 class Profile;
  33
  34 // The view.
  35 class MediaGalleriesScanResultDialog {
  36  public:
  37   virtual ~MediaGalleriesScanResultDialog();
  38
  39   // Tell the dialog to update its display list of scan results.
  40   virtual void UpdateResults() = 0;
  41
  42   // Constructs a platform-specific dialog owned and controlled by |controller|.
  43   static MediaGalleriesScanResultDialog* Create(
  44       MediaGalleriesScanResultDialogController* controller);
  45 };
  46
  47 // The controller is responsible for handling the logic of the dialog and
  48 // interfacing with the model (i.e., MediaGalleriesPreferences). It shows
  49 // the dialog and owns itself.
  50 class MediaGalleriesScanResultDialogController
  51     : public RemovableStorageObserver,
  52       public MediaGalleriesPreferences::GalleryChangeObserver {
  53  public:
  54   struct ScanResult {
  55     ScanResult(const MediaGalleryPrefInfo& pref_info, bool selected)
  56         : pref_info(pref_info),
  57           selected(selected) {
  58     }
  59     ScanResult() : selected(false) {}
  60
  61     MediaGalleryPrefInfo pref_info;
  62     bool selected;
  63   };
  64   typedef std::vector<ScanResult> OrderedScanResults;
  65
  66   // |preferences| must be already initialized.
  67   static size_t ScanResultCountForExtension(
  68       MediaGalleriesPreferences* preferences,
  69       const extensions::Extension* extension);
  70
  71   // The constructor creates a dialog controller which owns itself.
  72   MediaGalleriesScanResultDialogController(
  73       content::WebContents* web_contents,
  74       const extensions::Extension& extension,
  75       const base::Closure& on_finish);
  76
  77   // The title of the dialog view.
  78   base::string16 GetHeader() const;
  79
  80   // Explanatory text directly below the title.
  81   base::string16 GetSubtext() const;
  82
  83   // Get the scan results and their current selection state.
  84   virtual OrderedScanResults GetGalleryList() const;
  85
  86   // A checkbox beside a scan result was toggled.
  87   virtual void DidToggleGalleryId(MediaGalleryPrefId pref_id, bool selected);
  88
  89   // A folder viewer icon was clicked.
  90   virtual void DidClickOpenFolderViewer(MediaGalleryPrefId pref_id) const;
  91
  92   // The forget command in the context menu was selected.
  93   virtual void DidForgetGallery(MediaGalleryPrefId pref_id);
  94
  95   // The dialog is being deleted.
  96   virtual void DialogFinished(bool accepted);
  97
  98   virtual content::WebContents* web_contents();
  99
 100   ui::MenuModel* GetContextMenu(MediaGalleryPrefId id);
 101
 102  protected:
 103   typedef base::Callback<MediaGalleriesScanResultDialog* (
 104       MediaGalleriesScanResultDialogController*)> CreateDialogCallback;
 105   typedef std::map<MediaGalleryPrefId, ScanResult> ScanResults;
 106
 107   // Updates |scan_results| from |preferences|. Will not add galleries from
 108   // |ignore_list| onto |scan_results|.
 109   static void UpdateScanResultsFromPreferences(
 110       MediaGalleriesPreferences* preferences,
 111       const extensions::Extension* extension,
 112       MediaGalleryPrefIdSet ignore_list,
 113       ScanResults* scan_results);
 114
 115   // Used for unit tests.
 116   MediaGalleriesScanResultDialogController(
 117       const extensions::Extension& extension,
 118       MediaGalleriesPreferences* preferences_,
 119       const CreateDialogCallback& create_dialog_callback,
 120       const base::Closure& on_finish);
 121
 122   virtual ~MediaGalleriesScanResultDialogController();
 123
 124  private:
 125   friend class MediaGalleriesScanResultDialogControllerTest;
 126   friend class MediaGalleriesScanResultDialogCocoaTest;
 127
 128   // Bottom half of constructor -- called when |preferences_| is initialized.
 129   void OnPreferencesInitialized();
 130
 131   // Used to keep the dialog in sync with the preferences.
 132   void OnPreferenceUpdate(const std::string& extension_id);
 133
 134   // Used to keep the dialog in sync with attached and detached devices.
 135   void OnRemovableDeviceUpdate(const std::string device_id);
 136
 137   Profile* GetProfile() const;
 138
 139   // RemovableStorageObserver implementation.
 140   // Used to keep dialog in sync with removable device status.
 141   virtual void OnRemovableStorageAttached(const StorageInfo& info) OVERRIDE;
 142   virtual void OnRemovableStorageDetached(const StorageInfo& info) OVERRIDE;
 143
 144   // MediaGalleriesPreferences::GalleryChangeObserver implementations.
 145   // Used to keep the dialog in sync when the preferences change.
 146   virtual void OnPermissionAdded(MediaGalleriesPreferences* pref,
 147                                  const std::string& extension_id,
 148                                  MediaGalleryPrefId pref_id) OVERRIDE;
 149   virtual void OnPermissionRemoved(MediaGalleriesPreferences* pref,
 150                                    const std::string& extension_id,
 151                                    MediaGalleryPrefId pref_id) OVERRIDE;
 152   virtual void OnGalleryAdded(MediaGalleriesPreferences* pref,
 153                               MediaGalleryPrefId pref_id) OVERRIDE;
 154   virtual void OnGalleryRemoved(MediaGalleriesPreferences* pref,
 155                                 MediaGalleryPrefId pref_id) OVERRIDE;
 156   virtual void OnGalleryInfoUpdated(MediaGalleriesPreferences* pref,
 157                                     MediaGalleryPrefId pref_id) OVERRIDE;
 158
 159   // The web contents from which the request originated.
 160   content::WebContents* web_contents_;
 161
 162   // This is just a reference, but it's assumed that it won't become invalid
 163   // while the dialog is showing.
 164   const extensions::Extension* extension_;
 165
 166   // The scan results that aren't blacklisted and this extension doesn't
 167   // already have access to.
 168   ScanResults scan_results_;
 169
 170   // The set of scan results which should be removed (blacklisted) - unless
 171   // the user clicks Cancel.
 172   MediaGalleryPrefIdSet results_to_remove_;
 173
 174   // Callback to run when the dialog closes.
 175   base::Closure on_finish_;
 176
 177   // The model that tracks galleries and extensions' permissions.
 178   // This is the authoritative source for gallery information.
 179   MediaGalleriesPreferences* preferences_;
 180
 181   // Creates the dialog. Only changed for unit tests.
 182   CreateDialogCallback create_dialog_callback_;
 183
 184   // The view that's showing.
 185   scoped_ptr<MediaGalleriesScanResultDialog> dialog_;
 186
 187   scoped_ptr<MediaGalleryContextMenu> context_menu_;
 188
 189   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesScanResultDialogController);
 190 };
 191
 192 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_CONTROLLER_H_