1 // Copyright 2013 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "apps/app_lifetime_monitor.h"
7 #include "base/observer_list.h"
8 #include "content/public/browser/browser_context.h"
9 #include "extensions/browser/app_window/app_window.h"
10 #include "extensions/browser/extension_host.h"
11 #include "extensions/common/extension.h"
15 using extensions::AppWindow;
16 using extensions::AppWindowRegistry;
17 using extensions::Extension;
18 using extensions::ExtensionHost;
20 AppLifetimeMonitor::AppLifetimeMonitor(content::BrowserContext* context)
22 extension_host_registry_observation_.Observe(
23 extensions::ExtensionHostRegistry::Get(context_));
25 AppWindowRegistry* app_window_registry =
26 AppWindowRegistry::Factory::GetForBrowserContext(context_,
28 DCHECK(app_window_registry);
29 app_window_registry->AddObserver(this);
32 AppLifetimeMonitor::~AppLifetimeMonitor() = default;
34 void AppLifetimeMonitor::AddObserver(Observer* observer) {
35 observers_.AddObserver(observer);
38 void AppLifetimeMonitor::RemoveObserver(Observer* observer) {
39 observers_.RemoveObserver(observer);
42 void AppLifetimeMonitor::OnExtensionHostCompletedFirstLoad(
43 content::BrowserContext* browser_context,
44 ExtensionHost* host) {
45 const Extension* extension = host->extension();
46 if (!extension || !extension->is_platform_app())
49 NotifyAppStart(extension->id());
52 void AppLifetimeMonitor::OnExtensionHostDestroyed(
53 content::BrowserContext* browser_context,
54 extensions::ExtensionHost* host) {
55 const Extension* extension = host->extension();
56 if (!extension || !extension->is_platform_app())
59 NotifyAppStop(extension->id());
62 void AppLifetimeMonitor::OnAppWindowRemoved(AppWindow* app_window) {
63 if (!HasOtherVisibleAppWindows(app_window))
64 NotifyAppDeactivated(app_window->extension_id());
67 void AppLifetimeMonitor::OnAppWindowHidden(AppWindow* app_window) {
68 if (!HasOtherVisibleAppWindows(app_window))
69 NotifyAppDeactivated(app_window->extension_id());
72 void AppLifetimeMonitor::OnAppWindowShown(AppWindow* app_window,
74 if (app_window->window_type() != AppWindow::WINDOW_TYPE_DEFAULT)
77 // The app is being activated if this is the first window to become visible.
78 if (was_hidden && !HasOtherVisibleAppWindows(app_window)) {
79 NotifyAppActivated(app_window->extension_id());
83 void AppLifetimeMonitor::Shutdown() {
84 AppWindowRegistry* app_window_registry =
85 AppWindowRegistry::Factory::GetForBrowserContext(context_,
87 if (app_window_registry)
88 app_window_registry->RemoveObserver(this);
91 bool AppLifetimeMonitor::HasOtherVisibleAppWindows(
92 AppWindow* app_window) const {
93 AppWindowRegistry::AppWindowList windows =
94 AppWindowRegistry::Get(app_window->browser_context())
95 ->GetAppWindowsForApp(app_window->extension_id());
97 for (AppWindowRegistry::AppWindowList::const_iterator i = windows.begin();
100 if (*i != app_window && !(*i)->is_hidden())
106 void AppLifetimeMonitor::NotifyAppStart(const std::string& app_id) {
107 for (auto& observer : observers_)
108 observer.OnAppStart(context_, app_id);
111 void AppLifetimeMonitor::NotifyAppActivated(const std::string& app_id) {
112 for (auto& observer : observers_)
113 observer.OnAppActivated(context_, app_id);
116 void AppLifetimeMonitor::NotifyAppDeactivated(const std::string& app_id) {
117 for (auto& observer : observers_)
118 observer.OnAppDeactivated(context_, app_id);
121 void AppLifetimeMonitor::NotifyAppStop(const std::string& app_id) {
122 for (auto& observer : observers_)
123 observer.OnAppStop(context_, app_id);