multiplefileupload.lzx

<!-- * X_LZ_COPYRIGHT_BEGIN ***************************************************
* Copyright 2007-2008, 2011 Laszlo Systems, Inc.  All Rights Reserved.        *
* Use is subject to license terms.                                            *
* X_LZ_COPYRIGHT_END ****************************************************** -->
<library>
<include href="fileuploadlist.lzx"/>
<class name="multiplefileupload">

<simplelayout axis="y"/>
      <!--- numbers of fileuploadlist   -->
      <attribute name="numfields" value="1"/>

      <!--- Error occured-->
      <attribute name="erroroccured" type="boolean" value="false"/>

      <handler name="oninit">
            for(var i=0;i<numfields;i++){
              var t = new lz['fileuploadlist'](content);
          }
      
      </handler>

      <!--- add one file upload field-->
      <method name="addField">
          this.setNumFields(numfields+1);
      </method>

      <!--- remove one file upload field, and sort selected files to top-->
      <method name="removeField">
          this.setNumFields(numfields-1);
      </method>

      <!--- check if there were any errors in these file upload fields-->
      <method name="checkError">
         this.setAttribute('erroroccured', false);
         for(var i=0; i<this.content.subnodes.length;i++ ){
             if(this.content.subnodes[i] instanceof lz.fileuploadlist){
                 if(this.content.subnodes[i].erroroccured ==true){
                     this.setAttribute('erroroccured', true);
                 }
             }
         }
         return(this.erroroccured);
      
      </method>

      <!--- Set number of field upload fields and sort selected files to top
      -->
      <method name="setNumFields" args="num">
       if(num>0)
         if(num > numfields){
              for(var i=numfields;i<num;i++){
                  var t = new lz['fileuploadlist'](content);
              }
              this.setAttribute('numfields',num);

         }else if(num < numfields){
              var count= numfields - num;
              var kill = 0;
              for(var i=numfields-1;i>=0;i--){
                  if(content.subviews[i].selected==false){
                      content.subviews[i].destroy();
                      kill++;
                  }
              }

              if(kill>count){
                 for(var i=0;i<kill-count;i++){
                    var t = new lz['fileuploadlist'](content);
                 }
              }else if(kill < count){
                  for(var i=numfields-kill-1;i>=numfields-count;i--){
                      content.subviews[i].destroy();
                  }
              }

              this.setAttribute('numfields',num);
      }
      
      </method>

      <!--- clear all selected file fields-->
      <method name="clearAllFields">
          for(var i=0; i<numfields;i++){
              content.subviews[i].remove.onclick.sendEvent();
          }
      
      </method>

      <simplelayout axis="y" spacing="5"/>
      <view name="content">
          <simplelayout axis="y" spacing="5"/>
      </view>
      <!--- button to upload all selected file fields -->
      <button name="upload" text="Upload" x="410" enabled="true">
            <handler name="onclick">
                for(var i=0; i<parent.content.subnodes.length;i++){
                    if(parent.content.subnodes[i] instanceof lz.fileuploadlist && parent.content.subnodes[i].selected==true){
                        parent.content.subnodes[i].myFileUpload.upload('upload.jsp');
                    }
                }
            
            </handler>
        </button>
        <doc>
            <tag name="shortdesc"><text>A swf-specific class for uploading multiple files to a server</text></tag>
            <text>
                <p>
                A class for uploading a single file using the Flash file upload api. This only works with
                the swf runtime, that is, with lzr=swf10.
                </p>
                <p>
                Using this class requires a service to which to upload. A sample upload jsp is provided,
                which uses the cos.jar library from servlets.com. To use the example, copy cos.jar from
                <a href="http://www.servlets.com/cos/index.html">servlets.com</a> into $TOMCAT_HOME/common/lib
                and rename lps/components/incubator/uploader/example/upload.jsp.txt to upload.jsp.
                Restart tomcat, so it will see the new jar, then visit
                <a href="http://localhost:8080/legals/lps/components/incubator/uploader/example/test-multiplefileupload.lzx?lzr=swf10">
                    http://localhost:8080/legals/lps/components/incubator/uploader/example/test-multiplefileupload.lzx?lzr=swf10</a>
                </p>
                <p>(The terms of the servlets.com license forbid it from being redistributed 
                with OpenLaszlo.)
                </p>                
                <p>
                    To upload a single file, see <tagname>fileupload</tagname>.
                </p>
            </text>
        </doc>

</class>
</library>