Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim:set ts=2 sw=2 sts=2 et cindent: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_dom_SpeechSynthesis_h
       8             : #define mozilla_dom_SpeechSynthesis_h
       9             : 
      10             : #include "nsCOMPtr.h"
      11             : #include "nsIObserver.h"
      12             : #include "nsRefPtrHashtable.h"
      13             : #include "nsString.h"
      14             : #include "nsWeakReference.h"
      15             : #include "nsWrapperCache.h"
      16             : #include "js/TypeDecls.h"
      17             : 
      18             : #include "SpeechSynthesisUtterance.h"
      19             : #include "SpeechSynthesisVoice.h"
      20             : 
      21             : class nsIDOMWindow;
      22             : 
      23             : namespace mozilla {
      24             : namespace dom {
      25             : 
      26             : class nsSpeechTask;
      27             : 
      28             : class SpeechSynthesis final : public DOMEventTargetHelper
      29             :                             , public nsIObserver
      30             :                             , public nsSupportsWeakReference
      31             : {
      32             : public:
      33             :   explicit SpeechSynthesis(nsPIDOMWindowInner* aParent);
      34             : 
      35             :   NS_DECL_ISUPPORTS_INHERITED
      36           0 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SpeechSynthesis, DOMEventTargetHelper)
      37             :   NS_DECL_NSIOBSERVER
      38             : 
      39             :   JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
      40             : 
      41             :   bool Pending() const;
      42             : 
      43             :   bool Speaking() const;
      44             : 
      45             :   bool Paused() const;
      46             : 
      47             :   bool HasEmptyQueue() const;
      48             : 
      49             :   void Speak(SpeechSynthesisUtterance& aUtterance);
      50             : 
      51             :   void Cancel();
      52             : 
      53             :   void Pause();
      54             : 
      55             :   void Resume();
      56             : 
      57             :   void OnEnd(const nsSpeechTask* aTask);
      58             : 
      59             :   void GetVoices(nsTArray< RefPtr<SpeechSynthesisVoice> >& aResult);
      60             : 
      61             :   void ForceEnd();
      62             : 
      63           0 :   IMPL_EVENT_HANDLER(voiceschanged)
      64             : 
      65             : private:
      66             :   virtual ~SpeechSynthesis();
      67             : 
      68             :   void AdvanceQueue();
      69             : 
      70             :   bool HasVoices() const;
      71             : 
      72             :   nsTArray<RefPtr<SpeechSynthesisUtterance> > mSpeechQueue;
      73             : 
      74             :   RefPtr<nsSpeechTask> mCurrentTask;
      75             : 
      76             :   nsRefPtrHashtable<nsStringHashKey, SpeechSynthesisVoice> mVoiceCache;
      77             : 
      78             :   bool mHoldQueue;
      79             : 
      80             :   uint64_t mInnerID;
      81             : };
      82             : 
      83             : } // namespace dom
      84             : } // namespace mozilla
      85             : #endif