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Reset Image: Settings

Submit Image Changes When Data is Ready: Settings

Submit Image Changes When Data is Ready

<SCRIPT TYPE="text/javascript">
<!--
// Script by Idocs Inc, http://www.idocs.com
// Distribute freely, but keep this notice in place
var swrlist = new Array();

function swapwhenready(ready, notready)
{
this.ready=ready;
this.notready=notready;
this.alt="submit query";
this.name=document.forms[document.forms.length-1].name;
this.setfields     = swr_setfields;
this.checkfields   = swr_checkfields;
this.write         = swr_write;
this.submitswap    = swr_submitswap;
swrlist[this.name] = this;
}

function swr_setfields()
{
this.fields = new Object();
for (var i=0; i < arguments.length; i++)
   this.fields[arguments[i]]=true;
}

function swr_checkfields()
{
var myForm=document.forms[this.name];

for (var i=0; i < myForm.elements.length; i++)
   {
   if (
      (myForm.elements[i].value.length == 0) && 
      (this.fields ? myForm.elements[i].name && 
      this.fields[myForm.elements[i].name] : true)
      )
      return false;
   }
return true;
}

function swr_write()
{
if (
   document.images && 
   (document.forms.length > 0)
   )
   {
   this.readyImage = new Image();
   this.readyImage.src = this.ready;
   this.notReadyImage = new Image();
   this.notReadyImage.src = this.notready;
   this.imagename = this.name + '_swrimage';
   this.linkname = this.name + '_swrlink';

   document.write(
      '<A ' + 
      ' HREF="javascript:submitit(\'' + this.name + '\');void(0);"' + 
      ' NAME="' + this.linkname + '"' + 
      '><IMG SRC="' + this.notready + '"' + 
      ' ALT="' + this.alt + '"' + 
      ' NAME="' + this.imagename + '"' + 
      ' BORDER=0');
   if (this.height)document.write(' HEIGHT=' + this.height);
   if (this.width)document.write(' WIDTH=' + this.width);
   if (this.otheratts)document.write(" " + this.otheratts);
   document.write('></A>');
   }
else
   {
   document.write(
      '<INPUT TYPE=IMAGE SRC="' + this.ready + '"' + 
      ' ALT="' + this.alt + '"');
   if (this.otheratts)
      document.write(" " + this.otheratts);
   document.write('>');
   }
this.submitswap();
}

function submitswap(myfield)
   {swrlist[myfield.form.name].submitswap()}
function swr_submitswap()
{
if (this.checkfields())
   document.images[this.imagename].src = this.readyImage.src;
else
   document.images[this.imagename].src = this.notReadyImage.src;
}

function submitcheck(myform)
   {return swrlist[myform.name].checkfields()}

function submitit(name)
{
if (swrlist[name].checkfields())
   document.forms[name].submit();
}

//-->
</SCRIPT>

Now, suppose our form has one field we want filled in before the form is ready. Let's say the form is named "myform" and the field to check is named "searchstring". We create the form like this:

<FORM 
   ACTION="../cgi-bin/mycgi.pl"
   NAME="myform" 
   onSubmit="return submitcheck(this)">

<INPUT 
   NAME="searchstring" SIZE=10
   onKeyUp="submitswap(this)"
   >

<SCRIPT TYPE="text/javascript">
<!--
var swapper = new swapwhenready("search.ready.gif","search.notready.gif");
swapper.write();
//-->
</SCRIPT>

<NOSCRIPT><INPUT TYPE=SUBMIT></NOSCRIPT>

</FORM>

"search.notready.gif"

"search.ready.gif"

Reset Image: Settings

Submit Image Changes When Data is Ready: Settings

Copyright 1997-2002 Idocs, Inc. Written by Miko Sullivan.