6r1d

qx.Class.define("qx.ui.tabview.TabView", {
    extend: qx.ui.tabview.TabView,

    members: {
        // Select next tab
        next: function () {
            var size = this.getSelectables().length;
            var idx = this.getSelectables().indexOf(this.getSelection()[0]);
            if (idx < size - 1) {
                this.setSelection([this.getSelectables()[idx + 1]]);