I'm trying to subscribe to onTimeIndexChanged KONtx.mediaplayer event. It works fine, as long as view that I'm subscribing in stays focused. When I press back button, or widgets button, my view gets blurred and it no longer receives events.
Is it possible for this this subscription to persist through switching views? Are there widget-wide subscriptions?
I am trying to find out if it is possible to count time of playback client-side.
Hi Bartosz,
Yes, you're on the right track. The media player is a singleton and as such isn't bound to any particular view. You can define a listener that subscribes to it in the widget's global execution context. This way you can still receive and handle events that happen when a view is gc'd, and you can still receive those events.
We put these global subscriptions in init.js so they're centrally-located (best practice).
CODE
EventHandlers.handlerPlayerEvent.subscribeTo(KONtx.mediaplayer, ['onStateChange', 'onTimeIndexChanged'], EventHandlers);
Then, in Javascript/core/EventHandlers.js:
CODE
var EventHandlers = {
//snipped for brevity;
handlerPlayerEvent: function(event) {
switch(event.type) {
case 'onStateChange':
switch(event.payload.newState) {
case KONtx.mediaplayer.constants.states.PLAY:
if(!this._snippetAdded) {
KONtx.application.addViewConfig({ id: 'snippet-nowplaying',
viewClass: VideoNowPlayingSnippetView });
this._snippetAdded = true;
}
break;
case KONtx.mediaplayer.constants.states.UNKNOWN:
case KONtx.mediaplayer.constants.states.ERROR:
case KONtx.mediaplayer.constants.states.STOP:
case KONtx.mediaplayer.constants.states.EOF:
KONtx.application.removeView('snippet-nowplaying');
this._snippetAdded = false;
break;
}
break;
case 'onTimeIndexChanged':
//do something interesting;
break;
}
}
};
I hope that helps.
- Ben
