blob: b27d50485bb6a3e8c44de31fb9c795f3d70313e2 [file] [log] [blame]
// Copyright (c) 2013 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.
#ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_COMPONENT_LOADER_H_
#define CHROME_BROWSER_EXTENSIONS_EXTERNAL_COMPONENT_LOADER_H_
#include <string>
#include "base/compiler_specific.h"
#include "base/containers/hash_tables.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/extensions/external_loader.h"
#include "chrome/browser/profiles/profile.h"
class PrefChangeRegistrar;
namespace extensions {
// A specialization of the ExternalLoader that loads a hard-coded list of
// external extensions, that should be considered components of chrome (but
// unlike Component extensions, these extensions are installed from the webstore
// and don't get access to component only APIs.
// Instances of this class are expected to be created and destroyed on the UI
// thread and they are expecting public method calls from the UI thread.
class ExternalComponentLoader
: public ExternalLoader,
public base::SupportsWeakPtr<ExternalComponentLoader> {
public:
explicit ExternalComponentLoader(Profile* profile);
static bool IsEnhancedBookmarksExperimentEnabled();
// Register speech synthesis prefs for a profile.
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
protected:
virtual void StartLoading() OVERRIDE;
private:
friend class base::RefCountedThreadSafe<ExternalLoader>;
virtual ~ExternalComponentLoader();
// The profile that this loader is associated with. It listens for
// preference changes for that profile.
Profile* profile_;
#if defined(OS_CHROMEOS)
// The pref change registrar, so we can watch for pref changes.
scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;
// A map from language code to the extension id of the high-quality
// extension for that language in the web store, if any - for loading
// speech synthesis component extensions.
base::hash_map<std::string, std::string> lang_to_extension_id_map_;
#endif
DISALLOW_COPY_AND_ASSIGN(ExternalComponentLoader);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_EXTERNAL_COMPONENT_LOADER_H_