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<!DOCTYPE html>
<html lang="en">
<head>
        <meta charset="utf-8">
        <title>jQuery UI Droppable - Prevent propagation</title>
        <link rel="stylesheet" href="../../themes/base/jquery.ui.all.css">
        <script src="../../jquery-1.4.2.js"></script>
        <script src="../../ui/jquery.ui.core.js"></script>
        <script src="../../ui/jquery.ui.widget.js"></script>
        <script src="../../ui/jquery.ui.mouse.js"></script>
        <script src="../../ui/jquery.ui.draggable.js"></script>
        <script src="../../ui/jquery.ui.droppable.js"></script>
        <link rel="stylesheet" href="../demos.css">
        <style>
        #draggable { width: 100px; height: 40px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
        #droppable, #droppable2 { width: 230px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
        #droppable-inner, #droppable2-inner { width: 170px; height: 60px; padding: 0.5em; float: left; margin: 10px; }
        </style>
        <script>
        $(function() {
                $( "#draggable" ).draggable();

                $( "#droppable, #droppable-inner" ).droppable({
                        activeClass: "ui-state-hover",
                        hoverClass: "ui-state-active",
                        drop: function( event, ui ) {
                                $( this )
                                        .addClass( "ui-state-highlight" )
                                        .find( "> p" )
                                                .html( "Dropped!" );
                                return false;
                        }
                });

                $( "#droppable2, #droppable2-inner" ).droppable({
                        greedy: true,
                        activeClass: "ui-state-hover",
                        hoverClass: "ui-state-active",
                        drop: function( event, ui ) {
                                $( this )
                                        .addClass( "ui-state-highlight" )
                                        .find( "> p" )
                                                .html( "Dropped!" );
                        }
                });
        });
        </script>
</head>
<body>

<div class="demo">
        
<div id="draggable" class="ui-widget-content">
        <p>Drag me to my target</p>
</div>

<div id="droppable" class="ui-widget-header">
        <p>Outer droppable</p>
        <div id="droppable-inner" class="ui-widget-header">
                <p>Inner droppable (not greedy)</p>
        </div>
</div>

<div id="droppable2" class="ui-widget-header">
        <p>Outer droppable</p>
        <div id="droppable2-inner" class="ui-widget-header">
                <p>Inner droppable (greedy)</p>
        </div>
</div>

</div><!-- End demo -->



<div class="demo-description">
<p>When working with nested droppables &#8212; for example, you may have an editable directory structure displayed as a tree, with folder and document nodes &#8212; the <code>greedy</code> option set to true prevents event propagation when a draggable is dropped on a child node (droppable).</p>
</div><!-- End demo-description -->

</body>
</html>