static/ext/src/ux/grid/filter/Filter.js
function(active, suppressEvent){
        if(this.active != active){
            this.active = active;
            if (suppressEvent !== true) {
                this.fireEvent(active ? 'activate' : 'deactivate', this);
            }
        }
    }
function(active, suppressEvent){
        if(this.active != active){
            this.active = active;
            if (suppressEvent !== true) {
                this.fireEvent(active ? 'activate' : 'deactivate', this);
            }
        }
    }
Sets the status of the filter and fires the appropriate events.
@param {Boolean} active        The new filter state.
@param {Boolean} suppressEvent True to prevent events from being fired.