// wrapper to hasFocus that also selects text and applies focus async
ko.bindingHandlers.selectAndFocus = {
    init: function (element, valueAccessor, allBindingsAccessor, bindingContext) {
        ko.bindingHandlers.hasFocus.init(element, valueAccessor, allBindingsAccessor, bindingContext);
        ko.utils.registerEventHandler(element, 'focus', function () {
            element.focus();
        });
    },
    update: function (element, valueAccessor) {
        ko.utils.unwrapObservable(valueAccessor()); // for dependency
        // ensure that element is visible before trying to focus
        setTimeout(function () {
            ko.bindingHandlers.hasFocus.update(element, valueAccessor);
        }, 0);
    }
};