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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "apps/app_lifetime_monitor.h"
#include "base/observer_list.h"
#include "content/public/browser/browser_context.h"
#include "extensions/browser/app_window/app_window.h"
#include "extensions/browser/extension_host.h"
#include "extensions/common/extension.h"
namespace apps {
using extensions::AppWindow;
using extensions::AppWindowRegistry;
using extensions::Extension;
using extensions::ExtensionHost;
AppLifetimeMonitor::AppLifetimeMonitor(content::BrowserContext* context)
: context_(context) {
extension_host_registry_observation_.Observe(
extensions::ExtensionHostRegistry::Get(context_));
AppWindowRegistry* app_window_registry =
AppWindowRegistry::Factory::GetForBrowserContext(context_,
false /* create */);
DCHECK(app_window_registry);
app_window_registry->AddObserver(this);
}
AppLifetimeMonitor::~AppLifetimeMonitor() = default;
void AppLifetimeMonitor::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void AppLifetimeMonitor::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void AppLifetimeMonitor::OnExtensionHostCompletedFirstLoad(
content::BrowserContext* browser_context,
ExtensionHost* host) {
const Extension* extension = host->extension();
if (!extension || !extension->is_platform_app())
return;
NotifyAppStart(extension->id());
}
void AppLifetimeMonitor::OnExtensionHostDestroyed(
content::BrowserContext* browser_context,
extensions::ExtensionHost* host) {
const Extension* extension = host->extension();
if (!extension || !extension->is_platform_app())
return;
NotifyAppStop(extension->id());
}
void AppLifetimeMonitor::OnAppWindowRemoved(AppWindow* app_window) {
if (!HasOtherVisibleAppWindows(app_window))
NotifyAppDeactivated(app_window->extension_id());
}
void AppLifetimeMonitor::OnAppWindowHidden(AppWindow* app_window) {
if (!HasOtherVisibleAppWindows(app_window))
NotifyAppDeactivated(app_window->extension_id());
}
void AppLifetimeMonitor::OnAppWindowShown(AppWindow* app_window,
bool was_hidden) {
if (app_window->window_type() != AppWindow::WINDOW_TYPE_DEFAULT)
return;
// The app is being activated if this is the first window to become visible.
if (was_hidden && !HasOtherVisibleAppWindows(app_window)) {
NotifyAppActivated(app_window->extension_id());
}
}
void AppLifetimeMonitor::Shutdown() {
AppWindowRegistry* app_window_registry =
AppWindowRegistry::Factory::GetForBrowserContext(context_,
false /* create */);
if (app_window_registry)
app_window_registry->RemoveObserver(this);
}
bool AppLifetimeMonitor::HasOtherVisibleAppWindows(
AppWindow* app_window) const {
AppWindowRegistry::AppWindowList windows =
AppWindowRegistry::Get(app_window->browser_context())
->GetAppWindowsForApp(app_window->extension_id());
for (AppWindowRegistry::AppWindowList::const_iterator i = windows.begin();
i != windows.end();
++i) {
if (*i != app_window && !(*i)->is_hidden())
return true;
}
return false;
}
void AppLifetimeMonitor::NotifyAppStart(const std::string& app_id) {
for (auto& observer : observers_)
observer.OnAppStart(context_, app_id);
}
void AppLifetimeMonitor::NotifyAppActivated(const std::string& app_id) {
for (auto& observer : observers_)
observer.OnAppActivated(context_, app_id);
}
void AppLifetimeMonitor::NotifyAppDeactivated(const std::string& app_id) {
for (auto& observer : observers_)
observer.OnAppDeactivated(context_, app_id);
}
void AppLifetimeMonitor::NotifyAppStop(const std::string& app_id) {
for (auto& observer : observers_)
observer.OnAppStop(context_, app_id);
}
} // namespace apps
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