Zk how to call Java method from javascript?

asked 2016-10-24 10:04:43 +0800

psingh
963 ● 8

updated 2016-10-24 17:15:25 +0800

I am using dropupload and browse functionality to upload the file. I am checking for maximum file size in both the functionalities. In case if the file size exceeded I want to call my java method to show the error message

In ZUL File

<dropupload maxsize="51200" id="fileUpload"></dropupload>

<script defer="true">
<![CDATA[  
        var status = false;
        var oldAlert = jq.alert;
        jq.alert = function (msg, opts) {
        alert(msg);
            if (!msg.indexOf('the request was rejected because its size')){
                     status = true;

            }
            else{
                //oldAlert(msg, opts);
                status = true;
                }


            if (status) {
               alert(status);
                zAu.send(new zk.Event(zk.Widget.$('#fileUpload'), 'onDropFile', status, {toServer:true}));

            }
        }
        ]]>
</script>

In View Model,

@Listen("onDropFile = #fileUpload")
public void onDropFile( Event evt) {
    if (evt.getData() != null) {
        showError("Upload File size is exceeded"); 
    }

}

Can anyone how this functionality will work out or is there any other way to call java method from ZUl file using JAVASVRIPT?