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// Copyright 2014 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_DECLARATIVE_USER_SCRIPT_MASTER_H_
#define CHROME_BROWSER_EXTENSIONS_DECLARATIVE_USER_SCRIPT_MASTER_H_
#include "base/scoped_observer.h"
#include "chrome/browser/extensions/user_script_loader.h"
#include "extensions/browser/extension_registry_observer.h"
#include "extensions/common/extension.h"
class Profile;
namespace extensions {
class ExtensionRegistry;
class UserScript;
// Manages declarative user scripts for a single extension. Owns a
// UserScriptLoader to which file loading and shared memory management
// operations are delegated, and provides an interface for adding, removing,
// and clearing scripts.
class DeclarativeUserScriptMaster : public ExtensionRegistryObserver {
public:
DeclarativeUserScriptMaster(Profile* profile,
const ExtensionId& extension_id);
virtual ~DeclarativeUserScriptMaster();
// Adds script to shared memory region. This may not happen right away if a
// script load is in progress.
void AddScript(const UserScript& script);
// Removes script from shared memory region. This may not happen right away if
// a script load is in progress.
void RemoveScript(const UserScript& script);
// Removes all scripts from shared memory region. This may not happen right
// away if a script load is in progress.
void ClearScripts();
const ExtensionId& extension_id() const { return extension_id_; }
private:
// ExtensionRegistryObserver implementation.
virtual void OnExtensionUnloaded(
content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionInfo::Reason reason) OVERRIDE;
// ID of extension that owns scripts that this component manages.
ExtensionId extension_id_;
// Script loader that handles loading contents of scripts into shared memory
// and notifying renderers of script updates.
UserScriptLoader loader_;
ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observer_;
DISALLOW_COPY_AND_ASSIGN(DeclarativeUserScriptMaster);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_DECLARATIVE_USER_SCRIPT_MASTER_H_
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