dom/fmradio/FMRadio.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef mozilla_dom_FMRadio_h
   7 #define mozilla_dom_FMRadio_h
   8
   9 #include "AudioChannelAgent.h"
  10 #include "FMRadioCommon.h"
  11 #include "mozilla/DOMEventTargetHelper.h"
  12 #include "mozilla/HalTypes.h"
  13 #include "nsCycleCollectionParticipant.h"
  14 #include "nsWeakReference.h"
  15
  16 class nsPIDOMWindow;
  17 class nsIScriptContext;
  18
  19 BEGIN_FMRADIO_NAMESPACE
  20
  21 class DOMRequest;
  22
  23 class FMRadio MOZ_FINAL : public DOMEventTargetHelper
  24                         , public hal::SwitchObserver
  25                         , public FMRadioEventObserver
  26                         , public nsSupportsWeakReference
  27                         , public nsIAudioChannelAgentCallback
  28                         , public nsIDOMEventListener
  29
  30 {
  31   friend class FMRadioRequest;
  32
  33 public:
  34   FMRadio();
  35
  36   NS_DECL_ISUPPORTS_INHERITED
  37   NS_DECL_NSIAUDIOCHANNELAGENTCALLBACK
  38
  39   NS_REALLY_FORWARD_NSIDOMEVENTTARGET(DOMEventTargetHelper)
  40
  41   void Init(nsPIDOMWindow *aWindow);
  42   void Shutdown();
  43
  44   /* hal::SwitchObserver */
  45   virtual void Notify(const hal::SwitchEvent& aEvent) MOZ_OVERRIDE;
  46   /* FMRadioEventObserver */
  47   virtual void Notify(const FMRadioEventType& aType) MOZ_OVERRIDE;
  48
  49   nsPIDOMWindow* GetParentObject() const
  50   {
  51     return GetOwner();
  52   }
  53
  54   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
  55
  56   static bool Enabled();
  57
  58   bool AntennaAvailable() const;
  59
  60   Nullable<double> GetFrequency() const;
  61
  62   double FrequencyUpperBound() const;
  63
  64   double FrequencyLowerBound() const;
  65
  66   double ChannelWidth() const;
  67
  68   already_AddRefed<DOMRequest> Enable(double aFrequency);
  69
  70   already_AddRefed<DOMRequest> Disable();
  71
  72   already_AddRefed<DOMRequest> SetFrequency(double aFrequency);
  73
  74   already_AddRefed<DOMRequest> SeekUp();
  75
  76   already_AddRefed<DOMRequest> SeekDown();
  77
  78   already_AddRefed<DOMRequest> CancelSeek();
  79
  80   IMPL_EVENT_HANDLER(enabled);
  81   IMPL_EVENT_HANDLER(disabled);
  82   IMPL_EVENT_HANDLER(antennaavailablechange);
  83   IMPL_EVENT_HANDLER(frequencychange);
  84
  85   // nsIDOMEventListener
  86   NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
  87
  88 private:
  89   ~FMRadio();
  90
  91   void SetCanPlay(bool aCanPlay);
  92   void EnableAudioChannelAgent();
  93
  94   hal::SwitchState mHeadphoneState;
  95   bool mAudioChannelAgentEnabled;
  96   bool mHasInternalAntenna;
  97   bool mIsShutdown;
  98
  99   nsCOMPtr<nsIAudioChannelAgent> mAudioChannelAgent;
 100 };
 101
 102 END_FMRADIO_NAMESPACE
 103
 104 #endif // mozilla_dom_FMRadio_h
 105