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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 EXTENSIONS_BROWSER_SHARED_USER_SCRIPT_MASTER_H_
#define EXTENSIONS_BROWSER_SHARED_USER_SCRIPT_MASTER_H_
#include <memory>
#include <set>
#include "base/macros.h"
#include "base/scoped_observer.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_registry_observer.h"
#include "extensions/browser/extension_user_script_loader.h"
#include "extensions/common/extension.h"
#include "extensions/common/user_script.h"
namespace content {
class BrowserContext;
}
namespace extensions {
// Manages statically-defined user scripts for all extensions. Owns a
// UserScriptLoader to which file loading and shared memory management
// operations are delegated.
class SharedUserScriptMaster : public ExtensionRegistryObserver {
public:
explicit SharedUserScriptMaster(content::BrowserContext* browser_context);
~SharedUserScriptMaster() override;
UserScriptLoader* script_loader() { return &loader_; }
private:
// ExtensionRegistryObserver implementation.
void OnExtensionLoaded(content::BrowserContext* browser_context,
const Extension* extension) override;
void OnExtensionUnloaded(content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionReason reason) override;
// Gets an extension's scripts' metadata; i.e., gets a list of UserScript
// objects that contains script info, but not the contents of the scripts.
std::unique_ptr<UserScriptList> GetScriptsMetadata(
const Extension* extension);
// Script loader that handles loading contents of scripts into shared memory
// and notifying renderers of scripts in shared memory.
ExtensionUserScriptLoader loader_;
content::BrowserContext* browser_context_;
ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observer_{this};
DISALLOW_COPY_AND_ASSIGN(SharedUserScriptMaster);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_SHARED_USER_SCRIPT_MASTER_H_