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#include "content/public/renderer/render_frame_observer.h"
6
7#include "content/renderer/render_frame_impl.h"
8
9using blink::WebFrame;
10
11namespace content {
12
13RenderFrameObserver::RenderFrameObserver(RenderFrame* render_frame)
14    : render_frame_(render_frame),
15      routing_id_(MSG_ROUTING_NONE) {
16  // |render_frame| can be NULL on unit testing.
17  if (render_frame) {
18    RenderFrameImpl* impl = static_cast<RenderFrameImpl*>(render_frame);
19    routing_id_ = impl->GetRoutingID();
20    DCHECK_NE(routing_id_, MSG_ROUTING_NONE);
21    impl->AddObserver(this);
22  }
23}
24
25RenderFrameObserver::~RenderFrameObserver() {
26  if (render_frame_) {
27    RenderFrameImpl* impl = static_cast<RenderFrameImpl*>(render_frame_);
28    impl->RemoveObserver(this);
29  }
30}
31
32void RenderFrameObserver::OnDestruct() {
33  delete this;
34}
35
36bool RenderFrameObserver::OnMessageReceived(const IPC::Message& message) {
37  return false;
38}
39
40bool RenderFrameObserver::Send(IPC::Message* message) {
41  if (render_frame_)
42    return render_frame_->Send(message);
43
44  delete message;
45  return false;
46}
47
48RenderFrame* RenderFrameObserver::render_frame() const {
49  return render_frame_;
50}
51
52void RenderFrameObserver::RenderFrameGone() {
53  render_frame_ = NULL;
54}
55
56}  // namespace content
57