add check for eventListenerCount

This commit is contained in:
dkanada 2019-09-24 23:23:43 +09:00
parent 5104aabead
commit 4c3af5b9dd

View file

@ -22,12 +22,12 @@ define(['playbackManager', 'focusManager', 'appRouter', 'dom'], function (playba
var eventListenerCount = 0;
function on(scope, fn) {
eventListenerCount++;
if (eventListenerCount) eventListenerCount++;
dom.addEventListener(scope, 'command', fn, {});
}
function off(scope, fn) {
eventListenerCount--;
if (eventListenerCount) eventListenerCount--;
dom.removeEventListener(scope, 'command', fn, {});
}
@ -234,4 +234,4 @@ define(['playbackManager', 'focusManager', 'appRouter', 'dom'], function (playba
on: on,
off: off
};
});
});