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34 #if ENABLE(INPUT_SPEECH)
37 #include "SpeechInputListener.h"
38 #include <wtf/Forward.h>
39 #include <wtf/HashMap.h>
45 class SpeechInputClient;
46 class SpeechInputListener;
48 // This class connects the input elements requiring speech input with the platform specific
49 // speech recognition engine. It provides methods for the input elements to activate speech
50 // recognition and methods for the speech recognition engine to return back the results.
51 class SpeechInput : public SpeechInputListener,
52 public Supplement<Page> {
53 WTF_MAKE_NONCOPYABLE(SpeechInput);
55 virtual ~SpeechInput();
57 static PassOwnPtr<SpeechInput> create(SpeechInputClient*);
58 static const AtomicString& supplementName();
59 static SpeechInput* from(Page* page) { return static_cast<SpeechInput*>(Supplement<Page>::from(page, supplementName())); }
61 // Generates a unique ID for the given listener to be used for speech requests.
62 // This should be the first call made by listeners before anything else.
63 int registerListener(SpeechInputListener*);
65 // Invoked when the listener is done with recording or getting destroyed.
66 // Failure to unregister may result in crashes if there were any pending speech events.
67 void unregisterListener(int);
69 // Methods invoked by the input elements.
70 bool startRecognition(int listenerId, const IntRect& elementRect, const AtomicString& language, const String& grammar, SecurityOrigin*);
71 void stopRecording(int);
72 void cancelRecognition(int);
74 // SpeechInputListener methods.
75 virtual void didCompleteRecording(int);
76 virtual void didCompleteRecognition(int);
77 virtual void setRecognitionResult(int, const SpeechInputResultArray&);
80 explicit SpeechInput(SpeechInputClient*);
82 SpeechInputClient* m_client;
83 HashMap<int, SpeechInputListener*> m_listeners;
87 } // namespace WebCore
89 #endif // ENABLE(INPUT_SPEECH)
91 #endif // SpeechInput_h