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31 #ifndef HTMLImportLoader_h
32 #define HTMLImportLoader_h
34 #include "core/fetch/RawResource.h"
35 #include "core/fetch/ResourceOwner.h"
36 #include "wtf/OwnPtr.h"
37 #include "wtf/PassOwnPtr.h"
38 #include "wtf/Vector.h"
42 class CustomElementMicrotaskQueue;
45 class HTMLImportChild;
46 class HTMLImportsController;
50 // Owning imported Document lifetime. It also implements ResourceClient through ResourceOwner
51 // to feed fetched bytes to the DocumentWriter of the imported document.
52 // HTMLImportLoader is owned by and shared between HTMLImportChild.
55 class HTMLImportLoader FINAL : public RefCounted<HTMLImportLoader>, public ResourceOwner<RawResource> {
65 static PassRefPtr<HTMLImportLoader> create(HTMLImportsController* controller)
67 return adoptRef(new HTMLImportLoader(controller));
70 virtual ~HTMLImportLoader();
72 Document* document() const { return m_importedDocument.get(); }
73 Document* importedDocument() const;
74 void addImport(HTMLImportChild*);
75 void removeImport(HTMLImportChild*);
76 void moveToFirst(HTMLImportChild*);
77 HTMLImportChild* firstImport() const { return m_imports[0]; }
78 bool isFirstImport(HTMLImportChild* child) const { return m_imports.size() ? firstImport() == child : false; }
80 bool isDone() const { return m_state == StateLoaded || m_state == StateError; }
81 bool hasError() const { return m_state == StateError; }
82 bool shouldBlockScriptExecution() const;
84 void importDestroyed();
85 void startLoading(const ResourcePtr<RawResource>&);
86 void didFinishParsing();
87 void didRemoveAllPendingStylesheet();
89 PassRefPtr<CustomElementMicrotaskQueue> microtaskQueue() const;
92 HTMLImportLoader(HTMLImportsController*);
95 virtual void responseReceived(Resource*, const ResourceResponse&) OVERRIDE;
96 virtual void dataReceived(Resource*, const char* data, int length) OVERRIDE;
97 virtual void notifyFinished(Resource*) OVERRIDE;
99 State startWritingAndParsing(const ResourceResponse&);
100 State finishWriting();
101 State finishParsing();
102 State finishLoading();
104 void setState(State);
105 void didFinishLoading();
106 bool hasPendingResources() const;
109 HTMLImportsController* m_controller;
110 Vector<HTMLImportChild*> m_imports;
112 RefPtr<Document> m_importedDocument;
113 RefPtr<DocumentWriter> m_writer;
114 RefPtr<CustomElementMicrotaskQueue> m_microtaskQueue;
117 } // namespace WebCore
119 #endif // HTMLImportLoader_h