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// Copyright 2015 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 EXTENSIONS_BROWSER_EXTENSION_USER_SCRIPT_LOADER_H_
#define EXTENSIONS_BROWSER_EXTENSION_USER_SCRIPT_LOADER_H_
#include "base/macros.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_registry_observer.h"
#include "extensions/browser/user_script_loader.h"
#include "extensions/common/extension.h"
namespace content {
class BrowserContext;
}
namespace extensions {
class ContentVerifier;
// UserScriptLoader for extensions.
class ExtensionUserScriptLoader : public UserScriptLoader,
public ExtensionRegistryObserver {
public:
using PathAndDefaultLocale = std::pair<base::FilePath, std::string>;
using HostsInfo = std::map<HostID, PathAndDefaultLocale>;
// The listen_for_extension_system_loaded is only set true when initilizing
// the Extension System, e.g, when constructs SharedUserScriptMaster in
// ExtensionSystemImpl.
ExtensionUserScriptLoader(content::BrowserContext* browser_context,
const HostID& host_id,
bool listen_for_extension_system_loaded);
~ExtensionUserScriptLoader() override;
// A wrapper around the method to load user scripts, which is normally run on
// the file thread. Exposed only for tests.
void LoadScriptsForTest(UserScriptList* user_scripts);
private:
// UserScriptLoader:
void LoadScripts(std::unique_ptr<UserScriptList> user_scripts,
const std::set<HostID>& changed_hosts,
const std::set<int>& added_script_ids,
LoadScriptsCallback callback) override;
// Updates |hosts_info_| to contain info for each element of
// |changed_hosts_|.
void UpdateHostsInfo(const std::set<HostID>& changed_hosts);
// ExtensionRegistryObserver:
void OnExtensionUnloaded(content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionReason reason) override;
// Initiates script load when we have been waiting for the extension system
// to be ready.
void OnExtensionSystemReady();
// Maps host info needed for localization to a host ID.
HostsInfo hosts_info_;
// Manages content verification of the loaded user scripts.
scoped_refptr<ContentVerifier> content_verifier_;
ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observer_{this};
base::WeakPtrFactory<ExtensionUserScriptLoader> weak_factory_{this};
DISALLOW_COPY_AND_ASSIGN(ExtensionUserScriptLoader);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_EXTENSION_USER_SCRIPT_LOADER_H_