extension_app_model_builder.h revision 23730a6e56a168d1879203e4b3819bb36e3d8f1f 
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 "chrome/browser/extensions/install_observer.h"
14#include "ui/app_list/app_list_model.h"
15#include "ui/base/models/list_model_observer.h"
16
17class AppListControllerDelegate;
18class ExtensionAppItem;
19class Profile;
20
21namespace app_list {
22class AppListSyncableService;
23}
24
25namespace extensions {
26class Extension;
27class ExtensionSet;
28class InstallTracker;
29}
30
31namespace gfx {
32class ImageSkia;
33}
34
35// This class populates and maintains the given |model| with information from
36// |profile|.
37class ExtensionAppModelBuilder : public extensions::InstallObserver,
38                                 public app_list::AppListItemListObserver {
39 public:
40  explicit ExtensionAppModelBuilder(AppListControllerDelegate* controller);
41  virtual ~ExtensionAppModelBuilder();
42
43  // Initialize to use app-list sync and sets |service_| to |service|.
44  void InitializeWithService(app_list::AppListSyncableService* service);
45
46  // Initialize to use extension sync and sets |service_| to NULL. Used in
47  // tests and when AppList sync is not enabled.
48  void InitializeWithProfile(Profile* profile, app_list::AppListModel* model);
49
50 private:
51  typedef std::vector<ExtensionAppItem*> ExtensionAppList;
52
53  // Builds the model with the current profile.
54  void BuildModel();
55
56  // extensions::InstallObserver
57  virtual void OnBeginExtensionInstall(
58      const ExtensionInstallParams& params) OVERRIDE;
59  virtual void OnDownloadProgress(const std::string& extension_id,
60                                  int percent_downloaded) OVERRIDE;
61  virtual void OnInstallFailure(const std::string& extension_id) OVERRIDE;
62  virtual void OnExtensionLoaded(
63      const extensions::Extension* extension) OVERRIDE;
64  virtual void OnExtensionUnloaded(
65      const extensions::Extension* extension) OVERRIDE;
66  virtual void OnExtensionUninstalled(
67      const extensions::Extension* extension) OVERRIDE;
68  virtual void OnDisabledExtensionUpdated(
69      const extensions::Extension* extension) OVERRIDE;
70  virtual void OnAppInstalledToAppList(
71      const std::string& extension_id) OVERRIDE;
72  virtual void OnShutdown() OVERRIDE;
73
74  // AppListItemListObserver
75  virtual void OnListItemMoved(size_t from_index,
76                               size_t to_index,
77                               app_list::AppListItem* item) OVERRIDE;
78
79  scoped_ptr<ExtensionAppItem> CreateAppItem(
80      const std::string& extension_id,
81      const std::string& extension_name,
82      const gfx::ImageSkia& installing_icon,
83      bool is_platform_app);
84
85  // Populates the model with apps.
86  void PopulateApps();
87
88  // Re-sort apps in case app ordinal prefs are changed.
89  void ResortApps();
90
91  // Inserts an app based on app ordinal prefs.
92  void InsertApp(scoped_ptr<ExtensionAppItem> app);
93
94  // Sets which app is intended to be highlighted. Will remove the highlight
95  // from a currently highlighted app.
96  void SetHighlightedApp(const std::string& extension_id);
97
98  // Sets the application app with |highlight_app_id_| in |model_| as
99  // highlighted if |highlighted_app_pending_| is true. If such an app is found,
100  // reset |highlighted_app_pending_| so that won't be highlighted again until
101  // another call to SetHighlightedApp() is made.
102  void UpdateHighlight();
103
104  // Returns app instance matching |extension_id| or NULL.
105  ExtensionAppItem* GetExtensionAppItem(const std::string& extension_id);
106
107  // Initializes the |extension_pref_change_registrar| to listen for extension
108  // prefs changes. OnExtensionPreferenceChanged() is called when extension
109  // prefs change.
110  void InitializePrefChangeRegistrar();
111
112  // Handles extension prefs changes.
113  void OnExtensionPreferenceChanged();
114
115  // Unowned pointers to the service that owns this and associated profile.
116  app_list::AppListSyncableService* service_;
117  Profile* profile_;
118
119  // Registrar used to monitor the extension prefs.
120  PrefChangeRegistrar extension_pref_change_registrar_;
121
122  // Unowned pointer to the app list controller.
123  AppListControllerDelegate* controller_;
124
125  // Unowned pointer to the app list model.
126  app_list::AppListModel* model_;
127
128  std::string highlight_app_id_;
129
130  // True if we haven't set |highlight_app_id_| to be highlighted. This happens
131  // if we try to highlight an app that doesn't exist in the list yet.
132  bool highlighted_app_pending_;
133
134  // We listen to this to show app installing progress.
135  extensions::InstallTracker* tracker_;
136
137  DISALLOW_COPY_AND_ASSIGN(ExtensionAppModelBuilder);
138};
139
140#endif  // CHROME_BROWSER_UI_APP_LIST_EXTENSION_APP_MODEL_BUILDER_H_
141