Plupload add files disable after upload.stop() -



tring send param uploaded file, want check field param value compiled.
can check , stop upload if field empty, after upload stopped select files button still hidden , disabled.
after stopped upload want buttons @ same state @ plugin init can compile required field , start upload again or select more files.
code:
`

var uploadinitialized = false;      function validateform() {          alert('error');          return false;      }     var uploader = $("#uploader").pluploadqueue({         // general settings         runtimes : 'html5,html4',         url : 'http://www.example.com',         max_file_size : '200mb',         chunk_size : '1mb',         unique_names : true,         multiple_queues: true,        // specify files browse         filters : [             {title : "image files", extensions : "jpg,gif,png,eps,jpeg,pdf,tiff,tif"},             {title : "zip files", extensions : "zip"}         ],          init : {             statechanged: function(up) { if (!uploadinitialized && up.state == plupload.started) {         if (!validateform()) {             up.stop();         } else {             uploadinitialized = true;         }     } else {         if (up.files.length === (up.total.uploaded + up.total.failed)) {             $('form')[0].submit();         }     }                 }         }     });

`
jsfiddle link show problem: http://jsfiddle.net/wqw4w/154/


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