render_frame_host_delegate.h revision a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7
1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_ 6#define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_ 7 8#include "content/common/content_export.h" 9 10namespace IPC { 11class Message; 12} 13 14namespace content { 15class RenderFrameHost; 16 17// An interface implemented by an object interested in knowing about the state 18// of the RenderFrameHost. 19class CONTENT_EXPORT RenderFrameHostDelegate { 20 public: 21 // This is used to give the delegate a chance to filter IPC messages. 22 virtual bool OnMessageReceived(RenderFrameHost* render_frame_host, 23 const IPC::Message& message); 24 25 // Informs the delegate whenever a RenderFrameHost is created. 26 virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) {} 27 28 // Informs the delegate whenever a RenderFrameHost is deleted. 29 virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) {} 30 31 protected: 32 virtual ~RenderFrameHostDelegate() {} 33}; 34 35} // namespace content 36 37#endif // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_ 38