Drag & Drop with greedy Option


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Description

If this option is set to true (default), it stops processing hovering other droppables, under the draggable won't be searched.

Syntax

Droppables.add('element', {greedy: false or true});

Example

Just try this example by setting greedy to true and false one by one. You will find that if you set greedy to false, then you cannot drop an item in the drop area.

<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', greedy: false, 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;
         }
			
         #draggables img, #droparea img {
            margin: 4px;
            border:1px solid red;
         }
			
      </style>
		
   </head>
   <body>
	
      <div id="draggables">
         <img src="/images/html.gif"/>
         <img src="/images/css.gif"/>
         <img src="/images/xhtml.gif"/>
         <img src="/images/wml_logo.gif"/>
         <img 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