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27 #ifndef ContextFeatures_h
28 #define ContextFeatures_h
30 #include "platform/RefCountedSupplement.h"
34 class ContextFeaturesClient;
38 class ContextFeatures : public RefCountedSupplement<Page, ContextFeatures> {
46 FeatureTypeSize // Should be the last entry.
49 static const char* supplementName();
50 static ContextFeatures* defaultSwitch();
51 static PassRefPtr<ContextFeatures> create(ContextFeaturesClient*);
53 static bool dialogElementEnabled(Document*);
54 static bool styleScopedEnabled(Document*);
55 static bool pagePopupEnabled(Document*);
56 static bool mutationEventsEnabled(Document*);
57 static bool pushStateEnabled(Document*);
59 bool isEnabled(Document*, FeatureType, bool) const;
60 void urlDidChange(Document*);
63 explicit ContextFeatures(ContextFeaturesClient* client)
67 virtual void hostDestroyed() OVERRIDE;
69 ContextFeaturesClient* m_client;
72 inline void ContextFeatures::hostDestroyed()
78 class ContextFeaturesClient {
79 WTF_MAKE_FAST_ALLOCATED;
81 static ContextFeaturesClient* empty();
83 virtual ~ContextFeaturesClient() { }
84 virtual bool isEnabled(Document*, ContextFeatures::FeatureType, bool defaultValue) { return defaultValue; }
85 virtual void urlDidChange(Document*) { }
88 void provideContextFeaturesTo(Page*, ContextFeaturesClient*);
89 void provideContextFeaturesToDocumentFrom(Document*, Page*);
91 inline PassRefPtr<ContextFeatures> ContextFeatures::create(ContextFeaturesClient* client)
93 return adoptRef(new ContextFeatures(client));
96 inline bool ContextFeatures::isEnabled(Document* document, FeatureType type, bool defaultValue) const
100 return m_client->isEnabled(document, type, defaultValue);
103 inline void ContextFeatures::urlDidChange(Document* document)
107 m_client->urlDidChange(document);
110 } // namespace WebCore
112 #endif // ContextFeatures_h