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// Copyright (c) 2011 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 CONTENT_COMMON_FONT_CACHE_DISPATCHER_WIN_H_
#define CONTENT_COMMON_FONT_CACHE_DISPATCHER_WIN_H_
#pragma once
#include <windows.h>
#include "base/basictypes.h"
#include "base/memory/singleton.h"
#include "ipc/ipc_channel_proxy.h"
// Dispatches messages used for font caching on Windows. This is needed because
// Windows can't load fonts into its kernel cache in sandboxed processes. So the
// sandboxed process asks the browser process to do this for it.
class FontCacheDispatcher : public IPC::ChannelProxy::MessageFilter,
public IPC::Sender {
public:
FontCacheDispatcher();
virtual ~FontCacheDispatcher();
// IPC::Sender implementation:
virtual bool Send(IPC::Message* message) OVERRIDE;
private:
// IPC::ChannelProxy::MessageFilter implementation:
virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
virtual void OnChannelClosing() OVERRIDE;
// Message handlers.
void OnPreCacheFont(const LOGFONT& font);
void OnReleaseCachedFonts();
IPC::Channel* channel_;
DISALLOW_COPY_AND_ASSIGN(FontCacheDispatcher);
};
#endif // CONTENT_COMMON_FONT_CACHE_DISPATCHER_WIN_H_
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