Drag & Drop with accept Option


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Description

This is a string or an array of strings describing CSS classes. The droppable will only accept draggables having one or more of these CSS classes.

Syntax

Droppables.add('element', {accept: 'cssClass'});

Here cssClass is a CSS class and elements, with only that class will be accepted in the drop zone. You can specify an array of CSS classes.

Example

In this example, you will be able to drop only images with "niceOne" CSS class.

<html>
   <head>
      <title>Drag and Drop Example</title>
		
      <script type="text/javascript" src="/javascript/prototype.js"></script>
      <script type="text/javascript" src="/javascript/scriptaculous.js"></script>
		
      <script type="text/javascript">

         window.onload = function() {
			
            // Make all the images draggables from draggables division.
				
            $A($('draggables').getElementsByTagName('img')).each(function(item) {
               new Draggable(item, {revert: true, ghosting: true});
            });

            Droppables.add('droparea',{ hoverclass: 'hoverActive', accept: 'niceOne', onDrop: moveItem});
				
            // Set drop area by default  non cleared.
            $('droparea').cleared = false;
         }
			
         // The target drop area contains a snippet of instructional
         // text that we want to remove when the first item
         // is dropped into it.
			
         function moveItem( draggable,droparea){
			
            if (!droparea.cleared) {
               droparea.innerHTML = '';
               droparea.cleared = true;
            }
				
            draggable.parentNode.removeChild(draggable);
            droparea.appendChild(draggable);
         }
      </script>
		
      <style type="text/css">
		
         #draggables {
            width: 172px;
            border: 3px ridge blue;
            float: left;
            padding: 9px;
         }
			
         #droparea {
            float: left;
            margin-left: 16px;
            width: 172px;
            border: 3px ridge maroon;
            text-align: center;
            font-size: 24px;
            padding: 9px;
            float: left;
         }
			
         .hoverActive {
            background-color: #ffffcc;
         }
			
         .niceOne {
            border:10px dotted red;
         }
			
         #draggables img, #droparea img {
            margin: 4px;
            border:1px solid red;
         }
      </style>
		
   </head>
   <body>
	
      <div id="draggables">
         <img class="niceOne" src="/images/html.gif"/>
         <img src="/images/css.gif" />
         <img class="niceOne" src="/images/xhtml.gif"/>
         <img src="/images/wml_logo.gif"/>
         <img class="niceOne" src="/images/javascript.gif"/>
      </div>

      <div id="droparea">
         Drag and Drop Your Images in this area
      </div>
		
   </body>
</html>

This will produce following result −


scriptaculous_drag_drop.htm