chrome/browser/ui/app_list/extension_app_model_builder.h

   1 // Copyright (c) 2012 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_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_
   6 #define CHROME_BROWSER_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/gtest_prod_util.h"
  12 #include "base/prefs/pref_change_registrar.h"
  13 #include "base/scoped_observer.h"
  14 #include "chrome/browser/extensions/install_observer.h"
  15 #include "extensions/browser/extension_registry_observer.h"
  16 #include "ui/app_list/app_list_model.h"
  17 #include "ui/base/models/list_model_observer.h"
  18
  19 class AppListControllerDelegate;
  20 class ExtensionAppItem;
  21 class Profile;
  22
  23 namespace app_list {
  24 class AppListSyncableService;
  25 }
  26
  27 namespace extensions {
  28 class Extension;
  29 class ExtensionRegistry;
  30 class ExtensionSet;
  31 class InstallTracker;
  32 }
  33
  34 namespace gfx {
  35 class ImageSkia;
  36 }
  37
  38 // This class populates and maintains the given |model| with information from
  39 // |profile|.
  40 class ExtensionAppModelBuilder : public extensions::InstallObserver,
  41                                  public extensions::ExtensionRegistryObserver,
  42                                  public app_list::AppListItemListObserver {
  43  public:
  44   explicit ExtensionAppModelBuilder(AppListControllerDelegate* controller);
  45   ~ExtensionAppModelBuilder() override;
  46
  47   // Initialize to use app-list sync and sets |service_| to |service|.
  48   void InitializeWithService(app_list::AppListSyncableService* service);
  49
  50   // Initialize to use extension sync and sets |service_| to NULL. Used in
  51   // tests and when AppList sync is not enabled.
  52   void InitializeWithProfile(Profile* profile, app_list::AppListModel* model);
  53
  54  private:
  55   typedef std::vector<ExtensionAppItem*> ExtensionAppList;
  56
  57   // Builds the model with the current profile.
  58   void BuildModel();
  59
  60   // extensions::InstallObserver.
  61   void OnBeginExtensionInstall(const ExtensionInstallParams& params) override;
  62   void OnDownloadProgress(const std::string& extension_id,
  63                           int percent_downloaded) override;
  64   void OnInstallFailure(const std::string& extension_id) override;
  65   void OnDisabledExtensionUpdated(
  66       const extensions::Extension* extension) override;
  67   void OnShutdown() override;
  68
  69   // extensions::ExtensionRegistryObserver.
  70   void OnExtensionLoaded(content::BrowserContext* browser_context,
  71                          const extensions::Extension* extension) override;
  72   void OnExtensionUnloaded(
  73       content::BrowserContext* browser_context,
  74       const extensions::Extension* extension,
  75       extensions::UnloadedExtensionInfo::Reason reason) override;
  76   void OnExtensionUninstalled(content::BrowserContext* browser_context,
  77                               const extensions::Extension* extension,
  78                               extensions::UninstallReason reason) override;
  79   void OnShutdown(extensions::ExtensionRegistry* registry) override;
  80
  81   // AppListItemListObserver.
  82   void OnListItemMoved(size_t from_index,
  83                        size_t to_index,
  84                        app_list::AppListItem* item) override;
  85
  86   scoped_ptr<ExtensionAppItem> CreateAppItem(
  87       const std::string& extension_id,
  88       const std::string& extension_name,
  89       const gfx::ImageSkia& installing_icon,
  90       bool is_platform_app);
  91
  92   // Populates the model with apps.
  93   void PopulateApps();
  94
  95   // Inserts an app based on app ordinal prefs.
  96   void InsertApp(scoped_ptr<ExtensionAppItem> app);
  97
  98   // Returns app instance matching |extension_id| or NULL.
  99   ExtensionAppItem* GetExtensionAppItem(const std::string& extension_id);
 100
 101   // Initializes the |profile_pref_change_registrar_| and the
 102   // |extension_pref_change_registrar_| to listen for changes to profile and
 103   // extension prefs, and call OnProfilePreferenceChanged() or
 104   // OnExtensionPreferenceChanged().
 105   void InitializePrefChangeRegistrars();
 106
 107   // Handles profile prefs changes.
 108   void OnProfilePreferenceChanged();
 109
 110   // Handles extension prefs changes.
 111   void OnExtensionPreferenceChanged();
 112
 113   // Unowned pointers to the service that owns this and associated profile.
 114   app_list::AppListSyncableService* service_;
 115   Profile* profile_;
 116
 117   // Registrar used to monitor the profile prefs.
 118   PrefChangeRegistrar profile_pref_change_registrar_;
 119
 120   // Registrar used to monitor the extension prefs.
 121   PrefChangeRegistrar extension_pref_change_registrar_;
 122
 123   // Unowned pointer to the app list controller.
 124   AppListControllerDelegate* controller_;
 125
 126   // Unowned pointer to the app list model.
 127   app_list::AppListModel* model_;
 128
 129   // We listen to this to show app installing progress.
 130   extensions::InstallTracker* tracker_;
 131
 132   // Listen extension's load, unload, uninstalled.
 133   extensions::ExtensionRegistry* extension_registry_;
 134
 135   DISALLOW_COPY_AND_ASSIGN(ExtensionAppModelBuilder);
 136 };
 137
 138 #endif  // CHROME_BROWSER_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_