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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/extensions/power/power_api_manager.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/extensions/extension.h"
#include "chromeos/power/power_state_override.h"
#include "content/public/browser/notification_service.h"
namespace extensions {
namespace power {
// static
PowerApiManager* PowerApiManager::GetInstance() {
return Singleton<PowerApiManager>::get();
}
void PowerApiManager::AddExtensionLock(const std::string& extension_id) {
extension_ids_set_.insert(extension_id);
UpdatePowerSettings();
}
void PowerApiManager::RemoveExtensionLock(const std::string& extension_id) {
extension_ids_set_.erase(extension_id);
UpdatePowerSettings();
}
void PowerApiManager::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
if (type == chrome::NOTIFICATION_EXTENSION_UNLOADED) {
RemoveExtensionLock(
content::Details<extensions::UnloadedExtensionInfo>(details)->
extension->id());
UpdatePowerSettings();
} else if (type == chrome::NOTIFICATION_APP_TERMINATING) {
// If the Chrome app is terminating, ensure we release our power overrides.
power_state_override_.reset(NULL);
} else {
NOTREACHED() << "Unexpected notification " << type;
}
}
PowerApiManager::PowerApiManager()
: power_state_override_(NULL) {
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
content::NotificationService::AllSources());
registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
content::NotificationService::AllSources());
UpdatePowerSettings();
}
PowerApiManager::~PowerApiManager() {}
void PowerApiManager::UpdatePowerSettings() {
// If we have a wake lock and don't have the power state overriden.
if (extension_ids_set_.size() && !power_state_override_.get()) {
power_state_override_.reset(new chromeos::PowerStateOverride(
chromeos::PowerStateOverride::BLOCK_DISPLAY_SLEEP));
// else, if we don't have any wake locks and do have a power override.
} else if (extension_ids_set_.empty() && power_state_override_.get()) {
power_state_override_.reset(NULL);
}
}
} // namespace power
} // namespace extensions
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