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 #include "chrome/browser/extensions/chrome_process_manager_delegate.h"
6
7 #include "base/command_line.h"
8 #include "base/logging.h"
9 #include "chrome/browser/browser_process.h"
10 #include "chrome/browser/chrome_notification_types.h"
11 #include "chrome/browser/profiles/profile.h"
12 #include "chrome/browser/profiles/profile_manager.h"
13 #include "chrome/browser/ui/browser.h"
14 #include "chrome/browser/ui/browser_finder.h"
15 #include "chrome/common/chrome_switches.h"
16 #include "content/public/browser/notification_service.h"
17 #include "extensions/browser/extension_system.h"
18 #include "extensions/browser/process_manager.h"
19 #include "extensions/common/one_shot_event.h"
20
21 namespace extensions {
22
ChromeProcessManagerDelegate()23 ChromeProcessManagerDelegate::ChromeProcessManagerDelegate() {
24 registrar_.Add(this,
25 chrome::NOTIFICATION_BROWSER_WINDOW_READY,
26 content::NotificationService::AllSources());
27 registrar_.Add(this,
28 chrome::NOTIFICATION_PROFILE_CREATED,
29 content::NotificationService::AllSources());
30 registrar_.Add(this,
31 chrome::NOTIFICATION_PROFILE_DESTROYED,
32 content::NotificationService::AllSources());
33 }
34
~ChromeProcessManagerDelegate()35 ChromeProcessManagerDelegate::~ChromeProcessManagerDelegate() {
36 }
37
IsBackgroundPageAllowed(content::BrowserContext * context) const38 bool ChromeProcessManagerDelegate::IsBackgroundPageAllowed(
39 content::BrowserContext* context) const {
40 Profile* profile = static_cast<Profile*>(context);
41
42 // Disallow if the current session is a Guest mode session but the current
43 // browser context is *not* off-the-record. Such context is artificial and
44 // background page shouldn't be created in it.
45 // http://crbug.com/329498
46 return !(profile->IsGuestSession() && !profile->IsOffTheRecord());
47 }
48
DeferCreatingStartupBackgroundHosts(content::BrowserContext * context) const49 bool ChromeProcessManagerDelegate::DeferCreatingStartupBackgroundHosts(
50 content::BrowserContext* context) const {
51 Profile* profile = static_cast<Profile*>(context);
52
53 // The profile may not be valid yet if it is still being initialized.
54 // In that case, defer loading, since it depends on an initialized profile.
55 // Background hosts will be loaded later via NOTIFICATION_PROFILE_CREATED.
56 // http://crbug.com/222473
57 if (!g_browser_process->profile_manager()->IsValidProfile(profile))
58 return true;
59
60 // There are no browser windows open and the browser process was
61 // started to show the app launcher. Background hosts will be loaded later
62 // via NOTIFICATION_BROWSER_WINDOW_READY. http://crbug.com/178260
63 return chrome::GetTotalBrowserCountForProfile(profile) == 0 &&
64 CommandLine::ForCurrentProcess()->HasSwitch(switches::kShowAppList);
65 }
66
Observe(int type,const content::NotificationSource & source,const content::NotificationDetails & details)67 void ChromeProcessManagerDelegate::Observe(
68 int type,
69 const content::NotificationSource& source,
70 const content::NotificationDetails& details) {
71 switch (type) {
72 case chrome::NOTIFICATION_BROWSER_WINDOW_READY: {
73 Browser* browser = content::Source<Browser>(source).ptr();
74 OnBrowserWindowReady(browser);
75 break;
76 }
77 case chrome::NOTIFICATION_PROFILE_CREATED: {
78 Profile* profile = content::Source<Profile>(source).ptr();
79 OnProfileCreated(profile);
80 break;
81 }
82 case chrome::NOTIFICATION_PROFILE_DESTROYED: {
83 Profile* profile = content::Source<Profile>(source).ptr();
84 OnProfileDestroyed(profile);
85 break;
86 }
87 default:
88 NOTREACHED();
89 }
90 }
91
OnBrowserWindowReady(Browser * browser)92 void ChromeProcessManagerDelegate::OnBrowserWindowReady(Browser* browser) {
93 Profile* profile = browser->profile();
94 DCHECK(profile);
95
96 // If the extension system isn't ready yet the background hosts will be
97 // created automatically when it is.
98 ExtensionSystem* system = ExtensionSystem::Get(profile);
99 if (!system->ready().is_signaled())
100 return;
101
102 // Inform the process manager for this profile that the window is ready.
103 // We continue to observe the notification in case browser windows open for
104 // a related incognito profile or other regular profiles.
105 ProcessManager* manager = system->process_manager();
106 if (!manager) // Tests may not have a process manager.
107 return;
108 DCHECK_EQ(profile, manager->GetBrowserContext());
109 manager->MaybeCreateStartupBackgroundHosts();
110
111 // For incognito profiles also inform the original profile's process manager
112 // that the window is ready. This will usually be a no-op because the
113 // original profile's process manager should have been informed when the
114 // non-incognito window opened.
115 if (profile->IsOffTheRecord()) {
116 Profile* original_profile = profile->GetOriginalProfile();
117 ProcessManager* original_manager =
118 ExtensionSystem::Get(original_profile)->process_manager();
119 DCHECK(original_manager);
120 DCHECK_EQ(original_profile, original_manager->GetBrowserContext());
121 original_manager->MaybeCreateStartupBackgroundHosts();
122 }
123 }
124
OnProfileCreated(Profile * profile)125 void ChromeProcessManagerDelegate::OnProfileCreated(Profile* profile) {
126 // Incognito profiles are handled by their original profile.
127 if (profile->IsOffTheRecord())
128 return;
129
130 // The profile can be created before the extension system is ready.
131 ProcessManager* manager = ExtensionSystem::Get(profile)->process_manager();
132 if (!manager)
133 return;
134
135 // The profile might have been initialized asynchronously (in parallel with
136 // extension system startup). Now that initialization is complete the
137 // ProcessManager can load deferred background pages.
138 manager->MaybeCreateStartupBackgroundHosts();
139 }
140
OnProfileDestroyed(Profile * profile)141 void ChromeProcessManagerDelegate::OnProfileDestroyed(Profile* profile) {
142 // Close background hosts when the last profile is closed so that they
143 // have time to shutdown various objects on different threads. The
144 // ProfileManager destructor is called too late in the shutdown sequence.
145 // http://crbug.com/15708
146 ProcessManager* manager = ExtensionSystem::Get(profile)->process_manager();
147 if (manager)
148 manager->CloseBackgroundHosts();
149
150 // If this profile owns an incognito profile, but it is destroyed before the
151 // incognito profile is destroyed, then close the incognito background hosts
152 // as well. This happens in a few tests. http://crbug.com/138843
153 if (!profile->IsOffTheRecord() && profile->HasOffTheRecordProfile()) {
154 ProcessManager* incognito_manager =
155 ExtensionSystem::Get(profile->GetOffTheRecordProfile())
156 ->process_manager();
157 if (incognito_manager)
158 incognito_manager->CloseBackgroundHosts();
159 }
160 }
161
162 } // namespace extensions
163