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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_PROFILES_AVATAR_MENU_H_
6 #define CHROME_BROWSER_PROFILES_AVATAR_MENU_H_
7 
8 #include <string>
9 #include <vector>
10 
11 #include "base/basictypes.h"
12 #include "base/compiler_specific.h"
13 #include "base/strings/string16.h"
14 #include "chrome/browser/profiles/profile_metrics.h"
15 #include "chrome/browser/ui/host_desktop.h"
16 #include "content/public/browser/notification_observer.h"
17 #include "content/public/browser/notification_registrar.h"
18 #include "content/public/browser/web_contents.h"
19 #include "content/public/browser/web_contents_observer.h"
20 #include "ui/gfx/image/image.h"
21 
22 class AvatarMenuObserver;
23 class Browser;
24 class Profile;
25 class ProfileInfoInterface;
26 class ProfileList;
27 class AvatarMenuActions;
28 
29 // This class represents the menu-like interface used to select profiles,
30 // such as the bubble that appears when the avatar icon is clicked in the
31 // browser window frame. This class will notify its observer when the backend
32 // data changes, and the view for this model should forward actions
33 // back to it in response to user events.
34 class AvatarMenu : public content::NotificationObserver {
35  public:
36   // Represents an item in the menu.
37   struct Item {
38     Item(size_t menu_index, size_t profile_index, const gfx::Image& icon);
39     ~Item();
40 
41     // The icon to be displayed next to the item.
42     gfx::Image icon;
43 
44     // Whether or not the current browser is using this profile.
45     bool active;
46 
47     // The name of this profile.
48     base::string16 name;
49 
50     // A string representing the sync state of the profile.
51     base::string16 sync_state;
52 
53     // Whether or not the current profile is signed in. If true, |sync_state| is
54     // expected to be the email of the signed in user.
55     bool signed_in;
56 
57     // Whether or not the current profile requires sign-in before use.
58     bool signin_required;
59 
60     // Whether or not the current profile is a supervised user
61     // (see ManagedUserService).
62     bool supervised;
63 
64     // The index in the menu of this profile, used by views to refer to
65     // profiles.
66     size_t menu_index;
67 
68     // The index in the |profile_cache| for this profile.
69     size_t profile_index;
70 
71     // The path of this profile.
72     base::FilePath profile_path;
73   };
74 
75   // Constructor. |observer| can be NULL. |browser| can be NULL and a new one
76   // will be created if an action requires it.
77   AvatarMenu(ProfileInfoInterface* profile_cache,
78              AvatarMenuObserver* observer,
79              Browser* browser);
80   virtual ~AvatarMenu();
81 
82   // True if avatar menu should be displayed.
83   static bool ShouldShowAvatarMenu();
84 
85   // Sets |image| to the image corresponding to the given profile, and
86   // sets |is_rectangle| to true unless |image| is a built-in profile avatar.
87   static void GetImageForMenuButton(Profile* profile,
88                                     gfx::Image* image,
89                                     bool* is_rectangle);
90 
91   // Compare items by name.
92   static bool CompareItems(const Item* item1, const Item* item2);
93 
94   // Opens a Browser with the specified profile in response to the user
95   // selecting an item. If |always_create| is true then a new window is created
96   // even if a window for that profile already exists.
97   void SwitchToProfile(size_t index,
98                        bool always_create,
99                        ProfileMetrics::ProfileOpen metric);
100 
101   // Creates a new profile.
102   void AddNewProfile(ProfileMetrics::ProfileAdd type);
103 
104   // Opens the profile settings in response to clicking the edit button next to
105   // an item.
106   void EditProfile(size_t index);
107 
108   // Rebuilds the menu from the cache.
109   void RebuildMenu();
110 
111   // Gets the number of profiles.
112   size_t GetNumberOfItems() const;
113 
114   // Gets the Item at the specified index.
115   const Item& GetItemAt(size_t index) const;
116 
117   // Returns the index of the active profile.
118   size_t GetActiveProfileIndex();
119 
120   // Returns information about a supervised user which will be displayed in the
121   // avatar menu. If the profile does not belong to a supervised user, an empty
122   // string will be returned.
123   base::string16 GetSupervisedUserInformation() const;
124 
125   // Returns the icon for the supervised user which will be displayed in the
126   // avatar menu.
127   const gfx::Image& GetSupervisedUserIcon() const;
128 
129   // This menu is also used for the always-present Mac system menubar. If the
130   // last active browser changes, the menu will need to reference that browser.
131   void ActiveBrowserChanged(Browser* browser);
132 
133   // Returns true if the add profile link should be shown.
134   bool ShouldShowAddNewProfileLink() const;
135 
136   // Returns true if the edit profile link should be shown.
137   bool ShouldShowEditProfileLink() const;
138 
139   // content::NotificationObserver:
140   virtual void Observe(int type,
141                        const content::NotificationSource& source,
142                        const content::NotificationDetails& details) OVERRIDE;
143 
144  private:
145   // The model that provides the list of menu items.
146   scoped_ptr<ProfileList> profile_list_;
147 
148   // The controller for avatar menu actions.
149   scoped_ptr<AvatarMenuActions> menu_actions_;
150 
151   // The cache that provides the profile information. Weak.
152   ProfileInfoInterface* profile_info_;
153 
154   // The observer of this model, which is notified of changes. Weak.
155   AvatarMenuObserver* observer_;
156 
157   // Browser in which this avatar menu resides. Weak.
158   Browser* browser_;
159 
160   // Listens for notifications from the ProfileInfoCache.
161   content::NotificationRegistrar registrar_;
162 
163   DISALLOW_COPY_AND_ASSIGN(AvatarMenu);
164 };
165 
166 #endif  // CHROME_BROWSER_PROFILES_AVATAR_MENU_H_
167