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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/renderer/prerender/prerender_helper.h" | 5 #include "chrome/renderer/prerender/prerender_helper.h" |
6 | 6 |
7 #include "base/metrics/field_trial.h" | 7 #include "base/metrics/field_trial.h" |
8 #include "base/metrics/histogram.h" | 8 #include "base/metrics/histogram.h" |
9 #include "chrome/common/prerender_messages.h" | 9 #include "chrome/common/prerender_messages.h" |
10 #include "content/public/renderer/document_state.h" | 10 #include "content/public/renderer/document_state.h" |
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27 if (render_view->GetMainRenderFrame() == render_frame) { | 27 if (render_view->GetMainRenderFrame() == render_frame) { |
28 render_view->GetWebView()->setVisibilityState( | 28 render_view->GetWebView()->setVisibilityState( |
29 render_frame->GetVisibilityState(), false); | 29 render_frame->GetVisibilityState(), false); |
30 } | 30 } |
31 } | 31 } |
32 | 32 |
33 } // namespace | 33 } // namespace |
34 | 34 |
35 namespace prerender { | 35 namespace prerender { |
36 | 36 |
37 PrerenderHelper::PrerenderHelper(content::RenderFrame* render_frame) | 37 PrerenderHelper::PrerenderHelper(content::RenderFrame* render_frame, |
| 38 PrerenderMode prerender_mode) |
38 : content::RenderFrameObserver(render_frame), | 39 : content::RenderFrameObserver(render_frame), |
39 content::RenderFrameObserverTracker<PrerenderHelper>(render_frame) { | 40 content::RenderFrameObserverTracker<PrerenderHelper>(render_frame), |
| 41 prerender_mode_(prerender_mode) { |
| 42 DCHECK_NE(prerender_mode_, NO_PRERENDER); |
40 UpdateVisibilityState(render_frame); | 43 UpdateVisibilityState(render_frame); |
41 } | 44 } |
42 | 45 |
| 46 PrerenderHelper::PrerenderHelper(content::RenderFrame* sub_frame) |
| 47 : PrerenderHelper(sub_frame, |
| 48 GetPrerenderMode( |
| 49 sub_frame->GetRenderView()->GetMainRenderFrame())) { |
| 50 DCHECK(!render_frame()->IsMainFrame()); |
| 51 } |
| 52 |
43 PrerenderHelper::~PrerenderHelper() { | 53 PrerenderHelper::~PrerenderHelper() { |
44 } | 54 } |
45 | 55 |
46 // static. | 56 // static. |
47 bool PrerenderHelper::IsPrerendering(const content::RenderFrame* render_frame) { | 57 bool PrerenderHelper::IsPrerendering(const content::RenderFrame* render_frame) { |
48 return PrerenderHelper::Get(render_frame) != NULL; | 58 return PrerenderHelper::GetPrerenderMode(render_frame) != NO_PRERENDER; |
| 59 } |
| 60 |
| 61 // static. |
| 62 PrerenderMode PrerenderHelper::GetPrerenderMode( |
| 63 const content::RenderFrame* render_frame) { |
| 64 PrerenderHelper* helper = PrerenderHelper::Get(render_frame); |
| 65 if (!helper) |
| 66 return NO_PRERENDER; |
| 67 |
| 68 DCHECK_NE(helper->prerender_mode_, NO_PRERENDER); |
| 69 return helper->prerender_mode_; |
49 } | 70 } |
50 | 71 |
51 bool PrerenderHelper::OnMessageReceived( | 72 bool PrerenderHelper::OnMessageReceived( |
52 const IPC::Message& message) { | 73 const IPC::Message& message) { |
53 IPC_BEGIN_MESSAGE_MAP(PrerenderHelper, message) | 74 IPC_BEGIN_MESSAGE_MAP(PrerenderHelper, message) |
54 IPC_MESSAGE_HANDLER(PrerenderMsg_SetIsPrerendering, OnSetIsPrerendering) | 75 IPC_MESSAGE_HANDLER(PrerenderMsg_SetIsPrerendering, OnSetIsPrerendering) |
55 IPC_END_MESSAGE_MAP() | 76 IPC_END_MESSAGE_MAP() |
56 // Return false on PrerenderMsg_SetIsPrerendering so other observers can see | 77 // Return false on PrerenderMsg_SetIsPrerendering so other observers can see |
57 // the message. | 78 // the message. |
58 return false; | 79 return false; |
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71 delete this; | 92 delete this; |
72 | 93 |
73 UpdateVisibilityState(frame); | 94 UpdateVisibilityState(frame); |
74 } | 95 } |
75 | 96 |
76 void PrerenderHelper::OnDestruct() { | 97 void PrerenderHelper::OnDestruct() { |
77 delete this; | 98 delete this; |
78 } | 99 } |
79 | 100 |
80 } // namespace prerender | 101 } // namespace prerender |
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