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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/extensions/extension_action_manager.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/extensions/api/system_indicator/system_indicator_manager.h"
#include "chrome/browser/extensions/api/system_indicator/system_indicator_manager_factory.h"
#include "chrome/browser/extensions/extension_action.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/profiles/incognito_helpers.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/extensions/api/extension_action/action_info.h"
#include "chrome/common/extensions/api/extension_action/page_action_handler.h"
#include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
#include "components/browser_context_keyed_service/browser_context_keyed_service_factory.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/extension.h"
#include "extensions/common/feature_switch.h"
namespace extensions {
namespace {
// BrowserContextKeyedServiceFactory for ExtensionActionManager.
class ExtensionActionManagerFactory : public BrowserContextKeyedServiceFactory {
public:
// BrowserContextKeyedServiceFactory implementation:
static ExtensionActionManager* GetForProfile(Profile* profile) {
return static_cast<ExtensionActionManager*>(
GetInstance()->GetServiceForBrowserContext(profile, true));
}
static ExtensionActionManagerFactory* GetInstance();
private:
friend struct DefaultSingletonTraits<ExtensionActionManagerFactory>;
ExtensionActionManagerFactory()
: BrowserContextKeyedServiceFactory(
"ExtensionActionManager",
BrowserContextDependencyManager::GetInstance()) {
}
virtual BrowserContextKeyedService* BuildServiceInstanceFor(
content::BrowserContext* profile) const OVERRIDE {
return new ExtensionActionManager(static_cast<Profile*>(profile));
}
virtual content::BrowserContext* GetBrowserContextToUse(
content::BrowserContext* context) const OVERRIDE {
return chrome::GetBrowserContextRedirectedInIncognito(context);
}
};
ExtensionActionManagerFactory*
ExtensionActionManagerFactory::GetInstance() {
return Singleton<ExtensionActionManagerFactory>::get();
}
} // namespace
ExtensionActionManager::ExtensionActionManager(Profile* profile)
: profile_(profile) {
CHECK_EQ(profile, profile->GetOriginalProfile())
<< "Don't instantiate this with an incognito profile.";
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
content::Source<Profile>(profile));
}
ExtensionActionManager::~ExtensionActionManager() {
// Don't assert that the ExtensionAction maps are empty because Extensions are
// sometimes (only in tests?) not unloaded before the Profile is destroyed.
}
ExtensionActionManager* ExtensionActionManager::Get(Profile* profile) {
return ExtensionActionManagerFactory::GetForProfile(profile);
}
void ExtensionActionManager::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
const Extension* extension =
content::Details<UnloadedExtensionInfo>(details)->extension;
page_actions_.erase(extension->id());
browser_actions_.erase(extension->id());
system_indicators_.erase(extension->id());
break;
}
}
}
namespace {
// Returns map[extension_id] if that entry exists. Otherwise, if
// action_info!=NULL, creates an ExtensionAction from it, fills in the map, and
// returns that. Otherwise (action_info==NULL), returns NULL.
ExtensionAction* GetOrCreateOrNull(
std::map<std::string, linked_ptr<ExtensionAction> >* map,
const std::string& extension_id,
ActionInfo::Type action_type,
const ActionInfo* action_info,
Profile* profile) {
std::map<std::string, linked_ptr<ExtensionAction> >::const_iterator it =
map->find(extension_id);
if (it != map->end())
return it->second.get();
if (!action_info)
return NULL;
// Only create action info for enabled extensions.
// This avoids bugs where actions are recreated just after being removed
// in response to NOTIFICATION_EXTENSION_UNLOADED in
// ExtensionActionManager::Observe()
ExtensionService* service =
ExtensionSystem::Get(profile)->extension_service();
if (!service->GetExtensionById(extension_id, false))
return NULL;
linked_ptr<ExtensionAction> action(new ExtensionAction(
extension_id, action_type, *action_info));
(*map)[extension_id] = action;
return action.get();
}
} // namespace
ExtensionAction* ExtensionActionManager::GetPageAction(
const extensions::Extension& extension) const {
return GetOrCreateOrNull(&page_actions_, extension.id(),
ActionInfo::TYPE_PAGE,
ActionInfo::GetPageActionInfo(&extension),
profile_);
}
ExtensionAction* ExtensionActionManager::GetBrowserAction(
const extensions::Extension& extension) const {
return GetOrCreateOrNull(&browser_actions_, extension.id(),
ActionInfo::TYPE_BROWSER,
ActionInfo::GetBrowserActionInfo(&extension),
profile_);
}
ExtensionAction* ExtensionActionManager::GetSystemIndicator(
const extensions::Extension& extension) const {
// If it does not already exist, create the SystemIndicatorManager for the
// given profile. This could return NULL if the system indicator area is
// unavailable on the current system. If so, return NULL to signal that
// the system indicator area is unusable.
if (!extensions::SystemIndicatorManagerFactory::GetForProfile(profile_))
return NULL;
return GetOrCreateOrNull(&system_indicators_, extension.id(),
ActionInfo::TYPE_SYSTEM_INDICATOR,
ActionInfo::GetSystemIndicatorInfo(&extension),
profile_);
}
} // namespace extensions
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