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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/extensions/api/system_indicator/system_indicator_manager_factory.h"
#include "chrome/browser/extensions/extension_action.h"
#include "chrome/browser/profiles/profile.h"
#include "components/keyed_service/content/browser_context_dependency_manager.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/common/constants.h"
#include "extensions/common/manifest_handlers/icons_handler.h"
namespace extensions {
namespace {
// BrowserContextKeyedServiceFactory for ExtensionActionManager.
class ExtensionActionManagerFactory : public BrowserContextKeyedServiceFactory {
public:
// BrowserContextKeyedServiceFactory implementation:
static ExtensionActionManager* GetForBrowserContext(
content::BrowserContext* context) {
return static_cast<ExtensionActionManager*>(
GetInstance()->GetServiceForBrowserContext(context, true));
}
static ExtensionActionManagerFactory* GetInstance();
private:
friend struct DefaultSingletonTraits<ExtensionActionManagerFactory>;
ExtensionActionManagerFactory()
: BrowserContextKeyedServiceFactory(
"ExtensionActionManager",
BrowserContextDependencyManager::GetInstance()) {
}
KeyedService* BuildServiceInstanceFor(
content::BrowserContext* profile) const override {
return new ExtensionActionManager(static_cast<Profile*>(profile));
}
content::BrowserContext* GetBrowserContextToUse(
content::BrowserContext* context) const override {
return ExtensionsBrowserClient::Get()->GetOriginalContext(context);
}
};
ExtensionActionManagerFactory*
ExtensionActionManagerFactory::GetInstance() {
return Singleton<ExtensionActionManagerFactory>::get();
}
} // namespace
ExtensionActionManager::ExtensionActionManager(Profile* profile)
: profile_(profile), extension_registry_observer_(this) {
CHECK_EQ(profile, profile->GetOriginalProfile())
<< "Don't instantiate this with an incognito profile.";
extension_registry_observer_.Add(ExtensionRegistry::Get(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(
content::BrowserContext* context) {
return ExtensionActionManagerFactory::GetForBrowserContext(context);
}
void ExtensionActionManager::OnExtensionUnloaded(
content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionInfo::Reason reason) {
page_actions_.erase(extension->id());
browser_actions_.erase(extension->id());
system_indicators_.erase(extension->id());
}
namespace {
// Loads resources missing from |action| (i.e. title, icons) from the "icons"
// key of |extension|'s manifest.
void PopulateMissingValues(const Extension& extension,
ExtensionAction* action) {
// If the title is missing from |action|, set it to |extension|'s name.
if (action->GetTitle(ExtensionAction::kDefaultTabId).empty())
action->SetTitle(ExtensionAction::kDefaultTabId, extension.name());
scoped_ptr<ExtensionIconSet> default_icon(new ExtensionIconSet());
if (action->default_icon())
*default_icon = *action->default_icon();
const ExtensionIconSet& extension_icons = IconsInfo::GetIcons(&extension);
std::string largest_icon = extension_icons.Get(
extension_misc::EXTENSION_ICON_GIGANTOR,
ExtensionIconSet::MATCH_SMALLER);
if (!largest_icon.empty()) {
int largest_icon_size = extension_icons.GetIconSizeFromPath(largest_icon);
// Replace any missing extension action icons with the largest icon
// retrieved from |extension|'s manifest so long as the largest icon is
// larger than the current key.
for (int i = extension_misc::kNumExtensionActionIconSizes - 1;
i >= 0; --i) {
int size = extension_misc::kExtensionActionIconSizes[i].size;
if (default_icon->Get(size, ExtensionIconSet::MATCH_BIGGER).empty()
&& largest_icon_size > size) {
default_icon->Add(size, largest_icon);
break;
}
}
action->set_default_icon(default_icon.Pass());
}
}
// 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 Extension& extension,
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 OnExtensionUnloaded().
if (!ExtensionRegistry::Get(profile)
->enabled_extensions().Contains(extension.id())) {
return NULL;
}
linked_ptr<ExtensionAction> action(new ExtensionAction(
extension.id(), action_type, *action_info));
(*map)[extension.id()] = action;
PopulateMissingValues(extension, action.get());
return action.get();
}
} // namespace
ExtensionAction* ExtensionActionManager::GetPageAction(
const Extension& extension) const {
return GetOrCreateOrNull(&page_actions_, extension,
ActionInfo::TYPE_PAGE,
ActionInfo::GetPageActionInfo(&extension),
profile_);
}
ExtensionAction* ExtensionActionManager::GetBrowserAction(
const Extension& extension) const {
return GetOrCreateOrNull(&browser_actions_, extension,
ActionInfo::TYPE_BROWSER,
ActionInfo::GetBrowserActionInfo(&extension),
profile_);
}
scoped_ptr<ExtensionAction> ExtensionActionManager::GetBestFitAction(
const Extension& extension,
ActionInfo::Type type) const {
const ActionInfo* info = ActionInfo::GetBrowserActionInfo(&extension);
if (!info)
info = ActionInfo::GetPageActionInfo(&extension);
// Create a new ExtensionAction of |type| with |extension|'s ActionInfo.
// If no ActionInfo exists for |extension|, create and return a new action
// with a blank ActionInfo.
// Populate any missing values from |extension|'s manifest.
scoped_ptr<ExtensionAction> new_action(new ExtensionAction(
extension.id(), type, info ? *info : ActionInfo()));
PopulateMissingValues(extension, new_action.get());
return new_action.Pass();
}
ExtensionAction* ExtensionActionManager::GetSystemIndicator(
const 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 (!SystemIndicatorManagerFactory::GetForProfile(profile_))
return NULL;
return GetOrCreateOrNull(&system_indicators_, extension,
ActionInfo::TYPE_SYSTEM_INDICATOR,
ActionInfo::GetSystemIndicatorInfo(&extension),
profile_);
}
ExtensionAction* ExtensionActionManager::GetExtensionAction(
const Extension& extension) const {
ExtensionAction* action = GetBrowserAction(extension);
return action ? action : GetPageAction(extension);
}
} // namespace extensions
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