Help on Jquery/Select Option

I need help on this.

I have 2 select options and the users can transfer messages from one box to another. I need to

Prevent User to transfer  - "Special Message*" (splMsg) to "Available Fields"
Prevent User to mix and combine all messages with "Special Message" under "Selected Fields" to "Available Fields" (user can combine all messages on "Selected Field" and can transfer to "Available Fields" but cannot move "Special Message"
      

Code is given below. Ignore my styles for now.


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <style>
        .row
        {
            width: 800px;
            background-color: Gray;
        }      
        .fieldsTable
        {
            float: left;
            width: 200px;            
        }
         .fieldsTableArrows
        {
            float: left;
            width: 100px;            
        }
    </style>
</head>
<body>
    <form>
    <div class="row">
       
        <div class="fieldsTable">
            <label>Available Fields:</label><br />
            <select id="availMsg" name="availMsg"  multiple="multiple" class="transferList"  size="5">
                <option value="msg01">Left Message 01</option>
                <option value="msg02">Left Message 02</option>
                <option value="msg03">Left Message 03</option>
                <option value="msg04">Left Message 04</option>
                <option value="msg05">Left Message 05</option>
            </select>
        </div>
        <div class="fieldsTableArrows">
            <input type="button" id="moveLeft" value="&gt;&gt;">
            <input type="button" class="moveRight" id="moveRight" value="&lt;&lt;">
        </div>
        <div class="fieldsTable">
            <label>Selected Fields:</label><br />
            <select id="selMsg" name="selectedFields" class="transferList" multiple="multiple"  size="5">
                <option value="msg11">Right Message 01</option>
                <option value="msg12">Right Message 02</option>
                <option value="msg13">Right Message 03</option>
                <option value="msg14">Right Message 04</option>
                <option value="splMsg">Special Message*</option>
            </select>
        </div>
    </div>
    </form>
</body>
</html>

<script type="text/javascript" language="javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.js"></script>

<script type="text/javascript" language="javascript">
    $(function() {
        $('#moveLeft').click(function() {
            return !$('#availMsg option:selected').remove().appendTo('#selMsg').blur();
        });
        $('#moveRight').click(function() {
            $('#selMsg option:selected').remove().appendTo('#availMsg');            
            $('#selMsg').blur();
            return false;
        });
    });
</script>
mahaqAsked:
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Michel PlungjanIT ExpertCommented:
http://api.jquery.com/filter/

for example
$('#moveRight').click(function() {
  $('#selMsg option:selected').filter(function(index) {
      return $(this).val() != "splMsg";
   }).remove().appendTo('#availMsg');            
  $('#selMsg').blur();
  return false;
 });

Open in new window

mahaqAuthor Commented:
Dear "mplungjan",

Many thanks on this quick reply and possibly the solution. I need little help on alerting the user not to mix and match the "splMsg" with all other messages while transfering from Right to Left. Also I need another alert when user tries to transfer "splMsg" too. Well I just need to alert & later on use a message key.

If you can provide a solution on these, I shall accept it in complete. Thanks in advance.
Michel PlungjanIT ExpertCommented:
You mean
$('#moveRight').click(function() {
  $('#selMsg option:selected').filter(function(index) {
      if ($(this).val() == "splMsg") {
        alert('Please do not transfer '+$(this).text());
        return false;
      }
      return $(this).val() != "splMsg";
   }).remove().appendTo('#availMsg');            
  $('#selMsg').blur();
  return false;
 });

Open in new window

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mahaqAuthor Commented:
Dear "mplungjan",

Many thanks for helping me out on this.
I am bothering you one last time, can you please give me an alternate way, when users select  combination of any or all messages with splMsg, then transfer be not performed and force user to only select other than splMsg. I mean I need another alert (telling users to deselect splMsg and try again), but no change to your current logic, becoz it works for me.

Thank you so much.
Michel PlungjanIT ExpertCommented:
Sounds very complicated to have an option not selectable
What exactly do you gave that makes you want to force these issues in the user?
mahaqAuthor Commented:
Never mind, I'll stick to the last solution. Thanks again.
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