Bug 24063 – Allow port to require a user gesture to play/pause an <audio> or <video> element

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Eric Carlson]

A port should be able to require a script to be called from a user gesture to start/stop a media element .

[Eric Carlson]

Created attachment 27833 [details]
proposed patch

[Simon Fraser (smfr)]

Comment on attachment 27833 [details]
proposed patch

> Index: WebCore/html/HTMLMediaElement.cpp
> ===================================================================

>  void HTMLMediaElement::loadTimerFired(Timer<HTMLMediaElement>*)
>  {
>      ExceptionCode ec;
> +
> +    ++m_internalCall;
>      load(ec);
> +    --m_internalCall;

I think it would be better for load() to wrap a loadInternal().
load() could do the permissions checking, and loadInternal() should
always load. Same with play() and pause().

> Index: WebCore/html/HTMLMediaElement.h
> ===================================================================

> +    enum BehaviorRestrictions 
>      { 
> -        NoLoadRestriction = 0,
> -        RequireUserGestureLoadRestriction = 1 << 0, 
> +        NoRestrictions = 0,
> +        RequireUserGestureLoadRestriction = 1 << 0,

RequireUserGestureForLoadRestriction
> +        RequireUserGestureRateChangeRestriction = 1 << 1,
RequireUserGestureForRateChangeRestriction

>      };
>  
>  
> @@ -237,7 +238,7 @@ protected:
>  
>      OwnPtr<MediaPlayer> m_player;
>  
> -    LoadRestrictions m_loadRestrictions;
> +    BehaviorRestrictions m_Restrictions;

m_Restrictions -> m_restrictions

[Eric Carlson]

Created attachment 27836 [details]
revised patch

[Simon Fraser (smfr)]

Comment on attachment 27836 [details]
revised patch

> Index: WebCore/html/HTMLMediaElement.cpp
> ===================================================================

>  void HTMLMediaElement::togglePlayState(ExceptionCode& ec)
>  {
>      if (canPlay())
> -        play(ec);
> +        playInternal(ec);
>      else 
> -        pause(ec);
> +        pauseInternal(ec);
>  }

Maybe add a comment to say why it's always OK to call the
internal methods.

> Index: WebCore/html/HTMLMediaElement.h
> ===================================================================

> +    void loadInternal(ExceptionCode& ec);
> +    void playInternal(ExceptionCode& ec);
> +    void pauseInternal(ExceptionCode& ec);

Add a comment to say why these are needed.

[Eric Carlson]

Committed revision 41117.