Using a javascript function for AutoLoad.TargetControl

  1. #1

    Using a javascript function for AutoLoad.TargetControl

    In the examples, there is this code:

                    <ext:Panel ID="ParentPanel" runat="server" Title="Deferred Loading of Internal Panels">
                                 <%--TriggerControl can be js function also--%>
                                 <AutoLoad Url="Child.aspx" Mode="IFrame" ShowMask="true" TriggerControl="#{ParentPanel}" TriggerEvent="Activate" />
    I've tried using a js function, but apparently i don't know what i'm doing. I want to look at some control properties to decide whether to reload the Panel - something like this:

    function refreshGrid() 
                    if(#{DetailForm}.record.get('ID') !=  #{HiddenField}.value)return true;
  2. #2
    You js function has to return an object:

    For example:
    TriggerControl="function(){return ((#{hd}.getValue() == '1') ? #{hd} : #{ParentPanel});}"
    If you have to compare a value with the value of an hidden field you can, for example, return the hidden field if the panel hasn't to be loaded, otherwise if you want to load the panel you have to return the target triggercontrol that has the "Activate" triggerevent.

    Note that the Activate event will not fire on the hidden field.

    Here is sample code:
    <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="Ext1._Default" %>
    <%@ Register assembly="Ext.Net" namespace="Ext.Net" tagprefix="ext" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
    <html xmlns="" >
    <head runat="server">
      <form id="form1" runat="server">
        <ext:ResourceManager ID="ResourceManager1" runat="server" />        
        <ext:Hidden ID="hd" runat="server" text="1"></ext:Hidden>    
          <ext:TabPanel ID="tp" runat="server">
              <ext:Panel ID="pnl1" runat="server" Title="Panel 1"> </ext:Panel>
                <ext:Panel ID="ParentPanel" runat="server" Title="Parent panel">
                    <ext:Panel ID="InnerPanel1" runat="server" 
                               Title="Panel" Height="150" StyleSpec="padding:5px;">
                      <AutoLoad Url="child.aspx" Mode="IFrame" ShowMask="true" 
                                TriggerControl="function(){return ((#{hd}.getValue() == '1') ? #{hd} : #{ParentPanel});}" 
                                TriggerEvent="Activate" />

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