comparatorGenerator.js

steal('can/component',

/* ...*/,
function(Component) {
     
    var timestampComparator = function(ascending) {
        return function(modelA, modelB) {
            var timeStampA = modelA.attr('call.state.timestamp-connect'),
                timeStampB = modelB.attr('call.state.timestamp-connect'),
                callModel;

            if (modelA.attr('call.info.consult-for-call-id')) {
                callModel = Models.Call.model({'call-id': modelA.attr('call.info.consult-for-call-id')});
                timeStampA = callModel.attr('state.timestamp-connect');
            }

            if (modelB.attr('call.info.consult-for-call-id')) {
                callModel = Models.Call.model({'call-id': modelB.attr('call.info.consult-for-call-id')});
                timeStampB = callModel.attr('state.timestamp-connect');
            }

            if(ascending) {
                return timeStampA === timeStampB ? 0 : timeStampA > timeStampB ? 1 : -1;
            }
            else {
                return timeStampA === timeStampB ? 0 : timeStampA < timeStampB ? 1 : -1;
            }            
         };
    };

    Component.extend({
        /* ... */

        someFunction: function() {
            if(this.isOperator()) {
                callList.attr('comparator', timestampComparator(true));
            }
            else {
                callList.attr('comparator', timestampComparator(false));
            }
        }

        /* ... */
    })

});