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// Copyright (c) 2012 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_PUBLIC_RENDERER_RENDER_THREAD_H_
#define CONTENT_PUBLIC_RENDERER_RENDER_THREAD_H_
#include "base/basictypes.h"
#include "base/shared_memory.h"
#include "content/common/content_export.h"
#include "ipc/ipc_channel_proxy.h"
#include "ipc/ipc_sender.h"
#if defined(OS_WIN)
#include <windows.h>
#endif
class MessageLoop;
namespace base {
class MessageLoopProxy;
}
namespace IPC {
class SyncChannel;
class SyncMessageFilter;
}
namespace v8 {
class Extension;
}
namespace content {
class RenderProcessObserver;
class ResourceDispatcherDelegate;
class CONTENT_EXPORT RenderThread : public IPC::Sender {
public:
// Returns the one render thread for this process. Note that this can only
// be accessed when running on the render thread itself.
static RenderThread* Get();
RenderThread();
virtual ~RenderThread();
virtual MessageLoop* GetMessageLoop() = 0;
virtual IPC::SyncChannel* GetChannel() = 0;
virtual std::string GetLocale() = 0;
virtual IPC::SyncMessageFilter* GetSyncMessageFilter() = 0;
virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() = 0;
// Called to add or remove a listener for a particular message routing ID.
// These methods normally get delegated to a MessageRouter.
virtual void AddRoute(int32 routing_id, IPC::Listener* listener) = 0;
virtual void RemoveRoute(int32 routing_id) = 0;
virtual int GenerateRoutingID() = 0;
// These map to IPC::ChannelProxy methods.
virtual void AddFilter(IPC::ChannelProxy::MessageFilter* filter) = 0;
virtual void RemoveFilter(IPC::ChannelProxy::MessageFilter* filter) = 0;
virtual void SetOutgoingMessageFilter(
IPC::ChannelProxy::OutgoingMessageFilter* filter) = 0;
// Add/remove observers for the process.
virtual void AddObserver(RenderProcessObserver* observer) = 0;
virtual void RemoveObserver(RenderProcessObserver* observer) = 0;
// Set the ResourceDispatcher delegate object for this process.
virtual void SetResourceDispatcherDelegate(
ResourceDispatcherDelegate* delegate) = 0;
// Called by a RenderWidget when it is hidden or restored.
virtual void WidgetHidden() = 0;
virtual void WidgetRestored() = 0;
// We initialize WebKit as late as possible. Call this to force
// initialization.
virtual void EnsureWebKitInitialized() = 0;
// Helper function to send over a string to be recorded by user metrics
virtual void RecordUserMetrics(const std::string& action) = 0;
// Asks the host to create a block of shared memory for the renderer.
// The shared memory allocated by the host is returned back.
virtual scoped_ptr<base::SharedMemory> HostAllocateSharedMemoryBuffer(
uint32 buffer_size) = 0;
// Registers the given V8 extension with WebKit.
virtual void RegisterExtension(v8::Extension* extension) = 0;
// Schedule a call to IdleHandler with the given initial delay.
virtual void ScheduleIdleHandler(int64 initial_delay_ms) = 0;
// A task we invoke periodically to assist with idle cleanup.
virtual void IdleHandler() = 0;
// Get/Set the delay for how often the idle handler is called.
virtual int64 GetIdleNotificationDelayInMs() const = 0;
virtual void SetIdleNotificationDelayInMs(
int64 idle_notification_delay_in_ms) = 0;
// Suspend/resume the webkit timer for this renderer.
virtual void ToggleWebKitSharedTimer(bool suspend) = 0;
virtual void UpdateHistograms(int sequence_number) = 0;
#if defined(OS_WIN)
// Request that the given font be loaded by the browser so it's cached by the
// OS. Please see ChildProcessHost::PreCacheFont for details.
virtual void PreCacheFont(const LOGFONT& log_font) = 0;
// Release cached font.
virtual void ReleaseCachedFonts() = 0;
#endif
};
} // namespace content
#endif // CONTENT_PUBLIC_RENDERER_RENDER_THREAD_H_
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