helper-drag-me-link-with-circle.xhtml

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<?xml version="1.0" encoding="utf-8"?>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<title>Cross frame drag and drop: helper file</title>

<style type="text/css">

div

  {width:0;

  height:0;

  border:solid 50px silver;

  border-radius:50px;

  margin-left:auto;}

</style>

<script type="application/ecmascript">

var step = 1;

function start(event)

  {if(step++ == 1)

    {setColor('green silver silver silver');}

  else

    {step = 0;

    setColor('maroon');

    say('Dragstart should be first event to fire.')}

function leavePage(event)

  {if(step++ > 1)

    {setColor('green green silver silver')}

  else

    {step = 0;

    setColor('maroon');

    say('Dragleave should fire after dragstart.')}

function endDrag(event)

  {if(step++ > 2)

    {setColor('green')}

  else

    {step = 0;

    setColor('maroon');

    say('Dragend should fire after dragstart and dragleave.')}

function say(it)

  {document.querySelector('pre').appendChild(document.createTextNode(it + '\n'))}

function setColor(c)

  {document.querySelector('div').setAttribute('style','border-color:' + c)}

</script>

</head>

<body ondragleave="leavePage(event)">

<p><a href="data:text/plain,1" ondragstart="start(event)" ondragend="endDrag(event)">Drag me</a></p>

<p>Drag link out of frame and drop it somewhere on the page. Both circles should turn green once link is dropped.</p>

<div/>

<pre/>

</body>

</html>