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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" |
11 #include "content/public/renderer/render_frame.h" | 11 #include "content/public/renderer/render_frame.h" |
12 #include "content/public/renderer/render_view.h" | 12 #include "content/public/renderer/render_view.h" |
13 #include "third_party/WebKit/public/web/WebFrame.h" | 13 #include "third_party/WebKit/public/web/WebFrame.h" |
14 #include "third_party/WebKit/public/web/WebView.h" | 14 #include "third_party/WebKit/public/web/WebView.h" |
15 | 15 |
16 using content::DocumentState; | 16 using content::DocumentState; |
17 | 17 |
18 namespace { | 18 namespace { |
19 | 19 |
20 // Updates the visibility state of the RenderFrame. Must be called whenever | 20 // Updates the visibility state of the RenderFrame. Must be called whenever |
21 // prerendering starts or finishes and the page is about to be show. At both | 21 // prerendering starts or finishes and the page is about to be show. At both |
22 // those times, the RenderFrame is hidden. | 22 // those times, the RenderFrame is hidden. |
23 void UpdateVisibilityState(content::RenderFrame* render_frame) { | 23 void UpdateVisibilityState(content::RenderFrame* render_frame) { |
24 // TODO(jam): until the prerendering code works on frames instead of views, we | 24 // TODO(jam): until the prerendering code works on frames instead of views, we |
25 // have to do this awkward check. | 25 // have to do this awkward check. |
26 content::RenderView* render_view = render_frame->GetRenderView(); | 26 content::RenderView* render_view = render_frame->GetRenderView(); |
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_view->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 : content::RenderFrameObserver(render_frame), | 38 : content::RenderFrameObserver(render_frame), |
39 content::RenderFrameObserverTracker<PrerenderHelper>(render_frame) { | 39 content::RenderFrameObserverTracker<PrerenderHelper>(render_frame) { |
(...skipping 27 matching lines...) Expand all Loading... |
67 content::RenderFrame* frame = render_frame(); | 67 content::RenderFrame* frame = render_frame(); |
68 // |this| must be deleted so PrerenderHelper::IsPrerendering returns false | 68 // |this| must be deleted so PrerenderHelper::IsPrerendering returns false |
69 // when the visibility state is updated, so the visibility state string will | 69 // when the visibility state is updated, so the visibility state string will |
70 // not be "prerendered". | 70 // not be "prerendered". |
71 delete this; | 71 delete this; |
72 | 72 |
73 UpdateVisibilityState(frame); | 73 UpdateVisibilityState(frame); |
74 } | 74 } |
75 | 75 |
76 } // namespace prerender | 76 } // namespace prerender |
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