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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.
#ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_
#define CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_
#include <string>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "chrome/browser/extensions/extension_management.h"
#include "chrome/browser/extensions/external_loader.h"
namespace base {
class DictionaryValue;
}
namespace extensions {
// A specialization of the ExternalProvider that uses extension management
// policies to look up which external extensions are registered.
class ExternalPolicyLoader : public ExternalLoader,
public ExtensionManagement::Observer {
public:
// Indicates the policies for installed extensions from this class, according
// to management polices.
enum InstallationType {
// Installed extensions are not allowed to be disabled or removed.
FORCED,
// Installed extensions are allowed to be disabled but not removed.
RECOMMENDED
};
ExternalPolicyLoader(ExtensionManagement* settings, InstallationType type);
// ExtensionManagement::Observer implementation
void OnExtensionManagementSettingsChanged() override;
// Adds an extension to be updated to the pref dictionary.
static void AddExtension(base::DictionaryValue* dict,
const std::string& extension_id,
const std::string& update_url);
protected:
void StartLoading() override;
private:
friend class base::RefCountedThreadSafe<ExternalLoader>;
~ExternalPolicyLoader() override;
ExtensionManagement* settings_;
InstallationType type_;
DISALLOW_COPY_AND_ASSIGN(ExternalPolicyLoader);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_