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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_EXTENSION_MESSAGE_FILTER_H_
#define EXTENSIONS_BROWSER_EXTENSION_MESSAGE_FILTER_H_
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "components/keyed_service/core/keyed_service_shutdown_notifier.h"
#include "content/public/browser/browser_message_filter.h"
class GURL;
namespace content {
class BrowserContext;
}
namespace gfx {
class Size;
}
namespace extensions {
class EventRouter;
// This class filters out incoming extension-specific IPC messages from the
// renderer process. It is created and destroyed on the UI thread and handles
// messages there.
class ExtensionMessageFilter : public content::BrowserMessageFilter {
public:
ExtensionMessageFilter(int render_process_id,
content::BrowserContext* context);
int render_process_id() { return render_process_id_; }
static void EnsureShutdownNotifierFactoryBuilt();
private:
friend class base::DeleteHelper<ExtensionMessageFilter>;
friend class content::BrowserThread;
~ExtensionMessageFilter() override;
EventRouter* GetEventRouter();
void ShutdownOnUIThread();
// content::BrowserMessageFilter implementation:
void OverrideThreadForMessage(const IPC::Message& message,
content::BrowserThread::ID* thread) override;
void OnDestruct() const override;
bool OnMessageReceived(const IPC::Message& message) override;
// Message handlers on the UI thread.
void OnExtensionAddListener(const std::string& extension_id,
const GURL& listener_url,
const std::string& event_name);
void OnExtensionRemoveListener(const std::string& extension_id,
const GURL& listener_url,
const std::string& event_name);
void OnExtensionAddLazyListener(const std::string& extension_id,
const std::string& event_name);
void OnExtensionRemoveLazyListener(const std::string& extension_id,
const std::string& event_name);
void OnExtensionAddFilteredListener(const std::string& extension_id,
const std::string& event_name,
const base::DictionaryValue& filter,
bool lazy);
void OnExtensionRemoveFilteredListener(const std::string& extension_id,
const std::string& event_name,
const base::DictionaryValue& filter,
bool lazy);
void OnExtensionShouldSuspendAck(const std::string& extension_id,
int sequence_id);
void OnExtensionSuspendAck(const std::string& extension_id);
void OnExtensionTransferBlobsAck(const std::vector<std::string>& blob_uuids);
void OnExtensionWakeEventPage(int request_id,
const std::string& extension_id);
// Responds to the ExtensionHostMsg_WakeEventPage message.
void SendWakeEventPageResponse(int request_id, bool success);
const int render_process_id_;
scoped_ptr<KeyedServiceShutdownNotifier::Subscription> shutdown_notifier_;
// Only access from the UI thread.
content::BrowserContext* browser_context_;
DISALLOW_COPY_AND_ASSIGN(ExtensionMessageFilter);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_EXTENSION_MESSAGE_FILTER_H_
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