Attach events to view
function() {
        var me = this,
            view = me.view;

        view.on({
            scope: me,
            groupclick: me.onGroupClick
        });

        if (me.enableGroupingMenu) {
            me.injectGroupingMenu();
        }

        me.pruneGroupedHeader();

        me.lastGroupField = me.getGroupField();
        me.block();
        me.onGroupChange();
        me.unblock();
    }