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   virtual ~ExtensionAppModelBuilder();
  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   virtual void OnBeginExtensionInstall(
  62       const ExtensionInstallParams& params) override;
  63   virtual void OnDownloadProgress(const std::string& extension_id,
  64                                   int percent_downloaded) override;
  65   virtual void OnInstallFailure(const std::string& extension_id) override;
  66   virtual void OnDisabledExtensionUpdated(
  67       const extensions::Extension* extension) override;
  68   virtual void OnShutdown() override;
  69
  70   // extensions::ExtensionRegistryObserver.
  71   virtual void OnExtensionLoaded(
  72       content::BrowserContext* browser_context,
  73       const extensions::Extension* extension) override;
  74   virtual void OnExtensionUnloaded(
  75       content::BrowserContext* browser_context,
  76       const extensions::Extension* extension,
  77       extensions::UnloadedExtensionInfo::Reason reason) override;
  78   virtual void OnExtensionUninstalled(
  79       content::BrowserContext* browser_context,
  80       const extensions::Extension* extension,
  81       extensions::UninstallReason reason) override;
  82   virtual void OnShutdown(extensions::ExtensionRegistry* registry) override;
  83
  84   // AppListItemListObserver.
  85   virtual void OnListItemMoved(size_t from_index,
  86                                size_t to_index,
  87                                app_list::AppListItem* item) override;
  88
  89   scoped_ptr<ExtensionAppItem> CreateAppItem(
  90       const std::string& extension_id,
  91       const std::string& extension_name,
  92       const gfx::ImageSkia& installing_icon,
  93       bool is_platform_app);
  94
  95   // Populates the model with apps.
  96   void PopulateApps();
  97
  98   // Inserts an app based on app ordinal prefs.
  99   void InsertApp(scoped_ptr<ExtensionAppItem> app);
 100
 101   // Returns app instance matching |extension_id| or NULL.
 102   ExtensionAppItem* GetExtensionAppItem(const std::string& extension_id);
 103
 104   // Initializes the |profile_pref_change_registrar_| and the
 105   // |extension_pref_change_registrar_| to listen for changes to profile and
 106   // extension prefs, and call OnProfilePreferenceChanged() or
 107   // OnExtensionPreferenceChanged().
 108   void InitializePrefChangeRegistrars();
 109
 110   // Handles profile prefs changes.
 111   void OnProfilePreferenceChanged();
 112
 113   // Handles extension prefs changes.
 114   void OnExtensionPreferenceChanged();
 115
 116   // Unowned pointers to the service that owns this and associated profile.
 117   app_list::AppListSyncableService* service_;
 118   Profile* profile_;
 119
 120   // Registrar used to monitor the profile prefs.
 121   PrefChangeRegistrar profile_pref_change_registrar_;
 122
 123   // Registrar used to monitor the extension prefs.
 124   PrefChangeRegistrar extension_pref_change_registrar_;
 125
 126   // Unowned pointer to the app list controller.
 127   AppListControllerDelegate* controller_;
 128
 129   // Unowned pointer to the app list model.
 130   app_list::AppListModel* model_;
 131
 132   // We listen to this to show app installing progress.
 133   extensions::InstallTracker* tracker_;
 134
 135   // Listen extension's load, unload, uninstalled.
 136   extensions::ExtensionRegistry* extension_registry_;
 137
 138   DISALLOW_COPY_AND_ASSIGN(ExtensionAppModelBuilder);
 139 };
 140
 141 #endif  // CHROME_BROWSER_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_