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1 #include "config.h" | |
haraken
2014/11/17 14:18:31
Add a copyright.
tasak
2014/11/19 08:23:17
Done.
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2 #include "core/xml/DocumentXSLT.h" | |
3 | |
4 #include "bindings/core/v8/DOMWrapperWorld.h" | |
5 #include "bindings/core/v8/ScriptState.h" | |
6 #include "bindings/core/v8/V8AbstractEventListener.h" | |
7 #include "bindings/core/v8/V8Binding.h" | |
8 #include "core/dom/Document.h" | |
9 #include "core/dom/Node.h" | |
10 #include "core/dom/ProcessingInstruction.h" | |
11 #include "core/events/Event.h" | |
12 #include "core/events/EventListener.h" | |
13 #include "core/frame/UseCounter.h" | |
14 #include "core/inspector/InspectorInstrumentation.h" | |
15 #include "core/xml/XSLStyleSheet.h" | |
16 #include "core/xml/XSLTProcessor.h" | |
17 | |
18 namespace blink { | |
19 | |
20 namespace { | |
haraken
2014/11/17 14:18:31
What is this namespace for?
tasak
2014/11/19 08:23:17
Done.
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21 | |
22 class DOMContentLoadedListener : public V8AbstractEventListener { | |
23 public: | |
24 virtual bool operator==(const EventListener&) | |
25 { | |
26 return true; | |
27 } | |
28 | |
29 virtual void handleEvent(ExecutionContext* context, Event* event) | |
30 { | |
31 ASSERT(event->type() == "DOMContentLoaded"); | |
32 ScriptState::Scope scope(scriptState()); | |
33 | |
34 Document& document = *toDocument(context); | |
35 // Processing instruction (XML documents only). | |
36 // We don't support linking to embedded CSS stylesheets, see <https://bu gs.webkit.org/show_bug.cgi?id=49281> for discussion. | |
37 // Don't apply XSL transforms to already transformed documents -- <rdar: //problem/4132806> | |
haraken
2014/11/17 14:18:31
Remove the rdar part.
tasak
2014/11/19 08:23:17
Done.
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38 if (DocumentXSLT::hasTransformSourceDocument(document)) | |
39 return; | |
40 | |
41 ProcessingInstruction* pi = DocumentXSLT::findXSLStyleSheet(document); | |
42 if (!pi || pi != m_processingInstruction.get() || pi->isLoading()) | |
43 return; | |
44 DocumentXSLT::applyXSLTransform(document, pi); | |
45 } | |
46 | |
47 static PassRefPtr<DOMContentLoadedListener> create(ScriptState* scriptState, ProcessingInstruction* pi) | |
48 { | |
49 return adoptRef(new DOMContentLoadedListener(scriptState, pi)); | |
50 } | |
51 | |
52 private: | |
53 DOMContentLoadedListener(ScriptState* scriptState, ProcessingInstruction* pi ) | |
54 : V8AbstractEventListener(false, scriptState) | |
55 , m_processingInstruction(pi) | |
56 { | |
57 } | |
58 | |
59 virtual v8::Local<v8::Value> callListenerFunction(v8::Handle<v8::Value> jsev ent, Event*) | |
60 { | |
61 ASSERT_NOT_REACHED(); | |
62 return v8::Local<v8::Value>(); | |
63 } | |
64 | |
65 RefPtr<ProcessingInstruction> m_processingInstruction; | |
haraken
2014/11/17 14:18:31
This should be RefPtrWillBePersistent. Let's confi
tasak
2014/11/19 08:23:17
Done.
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66 }; | |
67 | |
68 } | |
69 | |
70 DocumentXSLT::DocumentXSLT() | |
71 : m_transformSourceDocument(nullptr) | |
72 { | |
73 } | |
74 | |
75 PassRefPtr<EventListener> DocumentXSLT::addDOMContentLoadedListenerForXSLT(Docum ent& document, ProcessingInstruction* pi) | |
76 { | |
77 if (!RuntimeEnabledFeatures::xsltEnabled()) | |
78 return nullptr; | |
79 | |
80 if (!document.frame()) | |
81 return nullptr; | |
82 | |
83 v8::HandleScope handleScope(v8::Isolate::GetCurrent()); | |
84 v8::Local<v8::Context> context = toV8Context(document.frame(), DOMWrapperWor ld::mainWorld()); | |
haraken
2014/11/17 14:18:31
Is it guaranteed that this is for the main world?
tasak
2014/11/19 08:23:17
According to offline discussion, for the main worl
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85 ScriptState* scriptState = ScriptState::from(context); | |
haraken
2014/11/17 14:18:31
You can use ScriptState::forMainWorld(document.fra
tasak
2014/11/19 08:23:17
Done.
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86 | |
87 RefPtr<EventListener> listener = DOMContentLoadedListener::create(scriptStat e, pi); | |
88 document.addEventListener(EventTypeNames::DOMContentLoaded, listener, false) ; | |
89 return listener; | |
90 } | |
91 | |
92 void DocumentXSLT::applyXSLTransform(Document& document, ProcessingInstruction* pi) | |
93 { | |
94 ASSERT(!pi->isLoading()); | |
95 UseCounter::count(document, UseCounter::XSLProcessingInstruction); | |
96 RefPtrWillBeRawPtr<XSLTProcessor> processor = XSLTProcessor::create(document ); | |
97 processor->setXSLStyleSheet(toXSLStyleSheet(pi->sheet())); | |
98 String resultMIMEType; | |
99 String newSource; | |
100 String resultEncoding; | |
101 document.setParsingState(Document::Parsing); | |
102 if (!processor->transformToString(&document, resultMIMEType, newSource, resu ltEncoding)) { | |
103 document.setParsingState(Document::FinishedParsing); | |
104 return; | |
105 } | |
106 // FIXME: If the transform failed we should probably report an error (like M ozilla does). | |
107 LocalFrame* ownerFrame = document.frame(); | |
108 processor->createDocumentFromSource(newSource, resultEncoding, resultMIMETyp e, &document, ownerFrame); | |
109 InspectorInstrumentation::frameDocumentUpdated(ownerFrame); | |
110 document.setParsingState(Document::FinishedParsing); | |
111 } | |
112 | |
113 ProcessingInstruction* DocumentXSLT::findXSLStyleSheet(Document& document) | |
114 { | |
115 for (Node* node = document.firstChild(); node; node = node->nextSibling()) { | |
116 if (node->nodeType() != Node::PROCESSING_INSTRUCTION_NODE) | |
117 continue; | |
118 | |
119 ProcessingInstruction* pi = toProcessingInstruction(node); | |
120 if (pi->isXSL()) | |
121 return pi; | |
122 } | |
123 return 0; | |
124 } | |
125 | |
126 void DocumentXSLT::sheetLoaded(Document& document, ProcessingInstruction* pi) | |
127 { | |
128 if (!RuntimeEnabledFeatures::xsltEnabled()) | |
129 return; | |
130 | |
131 if (document.parsing() || pi->isLoading()) | |
132 return; | |
133 | |
134 if (DocumentXSLT::hasTransformSourceDocument(document)) | |
135 return; | |
136 | |
137 ProcessingInstruction* firstPi = findXSLStyleSheet(document); | |
138 ASSERT(firstPi); | |
139 if (firstPi != pi) | |
140 return; | |
141 applyXSLTransform(document, pi); | |
142 } | |
143 | |
144 const char* DocumentXSLT::supplementName() | |
145 { | |
146 return "DocumentXSLT"; | |
147 } | |
148 | |
149 bool DocumentXSLT::hasTransformSourceDocument(Document& document) | |
150 { | |
151 return static_cast<DocumentXSLT*>(DocumentSupplement::from(document, supplem entName())); | |
152 } | |
153 | |
154 | |
155 DocumentXSLT& DocumentXSLT::from(DocumentSupplementable& document) | |
156 { | |
157 DocumentXSLT* supplement = static_cast<DocumentXSLT*>(DocumentSupplement::fr om(document, supplementName())); | |
158 if (!supplement) { | |
159 supplement = new DocumentXSLT(); | |
160 DocumentSupplement::provideTo(document, supplementName(), adoptPtrWillBe Noop(supplement)); | |
161 } | |
162 return *supplement; | |
163 } | |
164 | |
165 void DocumentXSLT::trace(Visitor* visitor) | |
166 { | |
167 visitor->trace(m_transformSourceDocument); | |
168 DocumentSupplement::trace(visitor); | |
169 } | |
170 | |
171 } // namespace blink | |
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