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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 COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MESSAGE_FILTER_H_
#define COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MESSAGE_FILTER_H_
#include <stddef.h>
#include <stdint.h>
#include <string>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/browser_message_filter.h"
namespace base {
class DictionaryValue;
}
namespace content {
class BrowserContext;
}
namespace guest_view {
class GuestViewManager;
// This class filters out incoming GuestView-specific IPC messages from the
// renderer process. It is created on the UI thread. Messages may be handled on
// the IO thread or the UI thread.
class GuestViewMessageFilter : public content::BrowserMessageFilter {
public:
GuestViewMessageFilter(int render_process_id,
content::BrowserContext* context);
protected:
GuestViewMessageFilter(const uint32_t* message_classes_to_filter,
size_t num_message_classes_to_filter,
int render_process_id,
content::BrowserContext* context);
~GuestViewMessageFilter() override;
// Returns the GuestViewManager for |browser_context_| if one already exists,
// or creates and returns one for |browser_context_| otherwise.
virtual GuestViewManager* GetOrCreateGuestViewManager();
// 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;
const int render_process_id_;
// Should only be accessed on the UI thread.
content::BrowserContext* const browser_context_;
// Weak pointers produced by this factory are bound to the IO thread.
base::WeakPtrFactory<GuestViewMessageFilter> weak_ptr_factory_;
private:
friend class content::BrowserThread;
friend class base::DeleteHelper<GuestViewMessageFilter>;
// Message handlers on the UI thread.
void OnAttachGuest(int element_instance_id,
int guest_instance_id,
const base::DictionaryValue& attach_params);
void OnAttachToEmbedderFrame(int embedder_local_render_frame_id,
int element_instance_id,
int guest_instance_id,
const base::DictionaryValue& params);
void OnViewCreated(int view_instance_id, const std::string& view_type);
void OnViewGarbageCollected(int view_instance_id);
DISALLOW_COPY_AND_ASSIGN(GuestViewMessageFilter);
};
} // namespace guest_view
#endif // COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MESSAGE_FILTER_H_
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