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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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38 #include "platform/weborigin/ReferrerPolicy.h" | 38 #include "platform/weborigin/ReferrerPolicy.h" |
39 #include "platform/weborigin/SecurityPolicy.h" | 39 #include "platform/weborigin/SecurityPolicy.h" |
40 | 40 |
41 namespace blink { | 41 namespace blink { |
42 | 42 |
43 // static | 43 // static |
44 PrerenderHandle* PrerenderHandle::create(Document& document, | 44 PrerenderHandle* PrerenderHandle::create(Document& document, |
45 PrerenderClient* client, | 45 PrerenderClient* client, |
46 const KURL& url, | 46 const KURL& url, |
47 const unsigned prerenderRelTypes) { | 47 const unsigned prerenderRelTypes) { |
48 // Prerenders are unlike requests in most ways (for instance, they pass down f
ragments, and they don't return data), | 48 // Prerenders are unlike requests in most ways (for instance, they pass down |
49 // but they do have referrers. | 49 // fragments, and they don't return data), but they do have referrers. |
50 if (!document.frame()) | 50 if (!document.frame()) |
51 return nullptr; | 51 return nullptr; |
52 | 52 |
53 Prerender* prerender = Prerender::create( | 53 Prerender* prerender = Prerender::create( |
54 client, url, prerenderRelTypes, | 54 client, url, prerenderRelTypes, |
55 SecurityPolicy::generateReferrer(document.getReferrerPolicy(), url, | 55 SecurityPolicy::generateReferrer(document.getReferrerPolicy(), url, |
56 document.outgoingReferrer())); | 56 document.outgoingReferrer())); |
57 | 57 |
58 PrerendererClient* prerendererClient = | 58 PrerendererClient* prerendererClient = |
59 PrerendererClient::from(document.page()); | 59 PrerendererClient::from(document.page()); |
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70 PrerenderHandle::~PrerenderHandle() { | 70 PrerenderHandle::~PrerenderHandle() { |
71 if (m_prerender) { | 71 if (m_prerender) { |
72 m_prerender->abandon(); | 72 m_prerender->abandon(); |
73 detach(); | 73 detach(); |
74 } | 74 } |
75 } | 75 } |
76 | 76 |
77 void PrerenderHandle::cancel() { | 77 void PrerenderHandle::cancel() { |
78 // Avoid both abandoning and canceling the same prerender. In the abandon | 78 // Avoid both abandoning and canceling the same prerender. In the abandon |
79 // case, the LinkLoader cancels the PrerenderHandle as the Document is | 79 // case, the LinkLoader cancels the PrerenderHandle as the Document is |
80 // destroyed, even through the ContextLifecycleObserver has already | 80 // destroyed, even through the ContextLifecycleObserver has already abandoned |
81 // abandoned it. | 81 // it. |
82 if (!m_prerender) | 82 if (!m_prerender) |
83 return; | 83 return; |
84 m_prerender->cancel(); | 84 m_prerender->cancel(); |
85 detach(); | 85 detach(); |
86 } | 86 } |
87 | 87 |
88 const KURL& PrerenderHandle::url() const { | 88 const KURL& PrerenderHandle::url() const { |
89 return m_prerender->url(); | 89 return m_prerender->url(); |
90 } | 90 } |
91 | 91 |
92 void PrerenderHandle::contextDestroyed() { | 92 void PrerenderHandle::contextDestroyed() { |
93 // A PrerenderHandle is not removed from LifecycleNotifier::m_observers | 93 // A PrerenderHandle is not removed from LifecycleNotifier::m_observers until |
94 // until the next GC runs. Thus contextDestroyed() can be called for a | 94 // the next GC runs. Thus contextDestroyed() can be called for a |
95 // PrerenderHandle that is already cancelled (and thus detached). In that | 95 // PrerenderHandle that is already cancelled (and thus detached). In that |
96 // case, we should not detach the PrerenderHandle again. | 96 // case, we should not detach the PrerenderHandle again. |
97 if (!m_prerender) | 97 if (!m_prerender) |
98 return; | 98 return; |
99 m_prerender->abandon(); | 99 m_prerender->abandon(); |
100 detach(); | 100 detach(); |
101 } | 101 } |
102 | 102 |
103 void PrerenderHandle::detach() { | 103 void PrerenderHandle::detach() { |
104 m_prerender->dispose(); | 104 m_prerender->dispose(); |
105 m_prerender.clear(); | 105 m_prerender.clear(); |
106 } | 106 } |
107 | 107 |
108 DEFINE_TRACE(PrerenderHandle) { | 108 DEFINE_TRACE(PrerenderHandle) { |
109 visitor->trace(m_prerender); | 109 visitor->trace(m_prerender); |
110 ContextLifecycleObserver::trace(visitor); | 110 ContextLifecycleObserver::trace(visitor); |
111 } | 111 } |
112 | 112 |
113 } // namespace blink | 113 } // namespace blink |
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