1. #1
    Ext User papasi's Avatar
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    Default Ext.util.Event.fire()

    Ext.util.Event.fire()


    Code:
    fire : function(){
        var ls = this.listeners, scope, len = ls.length;
        if(len > 0){
            this.firing = true;
            var args = Array.prototype.slice.call(arguments, 0);
            for(var i = 0; i < len; i++){
                var l = ls[i];
                if(l.fireFn.apply(l.scope, arguments) === false){
                    return false;
                }
            }
            this.firing = false;
        }
        return true;
    }
    If one of the listerners return false, this.firing = true is not reset to false, is this ok?

    Thanks

  2. #2
    Ext User papasi's Avatar
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    Default


    It's just a minor detail. I see that this.firing is a flag for add/remove listerner method to tell if it can just slice the listerner array or make a copy first.

    One question though, since javascript is single threaded, why is this necessary?

    Thanks.

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    Sencha User jack.slocum's Avatar
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    Default


    That is indeed an oversight. Thanks for pointing it out.

    The reason for the flag is because a listener can remove itself in the handler call (e.g. a 1 time listener) and break the loop.

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