<script><![CDATA[
zk.afterLoad("zul.inp", function () {
    var _xInputWidget = {};
    zk.override(zul.inp.InputWidget.prototype, _xInputWidget, {
        _validate: function (value) {
            zul.inp.validating = true;
            try {
                var val = value, msg;
                if (typeof val == 'string' || val == null) {
                    val = this.coerceFromString_(val);
                    if (val && ((msg = val.error) || val.server)) {
                        this.clearErrorMessage(true);
                        if (val.server || this._cst == '[c') { //CustomConstraint
                            this._reVald = false;
                            return {rawValue: value || '', server: true}; //let server to validate it
                        }
                        this._markError(msg, val);
                        return val;
                    }
                }                //unlike server, validation occurs only if attached
                if (!this.desktop) this._errmsg = null;
                else {
                    var em = this._errmsg;
                    this.clearErrorMessage(true);
                    msg = this.validate_(val);
                    if (msg === false) {
                        this._reVald = false;
                        return {value: val, server: true}; //let server to validate it
                    }
                    if (msg) {
                        this._markError(msg, val);
                        return {error: msg};
                    }
                    this._reVald = false;
                    if (em){
                        console.log('prevented onError: ' + val);
                        //this.fire('onError', {value: val});
                    }
                }
                return {value: val};
            } finally {
                zul.inp.validating = false;
            }
        }
     });
});
]]></script>