How to hide a button

In some cases it is necessary to limit the display of interface elements depending on the state of data. For example, to hide inactive buttons. You can create an XML plugin that solves the problem:

1. Create an XML file: /etc/xml/billmgr_mod_hide.xml

   <mgrdata>
       <handler name="gotoserver_hide" type="xml">
           <event name="vds" after="yes"/>
       </handler>
   </mgrdata>

2. Create a Bash script for the handler: /addon/gotoserver_hide
   

   #!/bin/bash
   
   if [[ "${PARAM_func}" == "vds" ]] ; then    
       sed "s:<toolbtn func=\"gotoserver\" name=\"gotoserver\" img=\"t-go\" type=\"window\"><hide name=\"transition\" value=\"off\"/><show name=\"status\" value=\"2\"/></toolbtn>::g"
   else
       cat
   fi

   The code in example specifies an event handler to be triggered after executing a certain action. Here, after a vds event. If the vds event is triggered, the handler uses the sed command to replace a certain button element in the XML. Changing the XML parameters allows to hide the button.
3. Make the script executable with the command:
   

    chmod +x addon/gotoserver_hide