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<!doctype html>
<html>
<head>
<title>Modifier keys selecting dropEffect with script overriding it</title>
<style type="text/css">
div:first-child {
height: 100px;
width: 100px;
background: orange;
display: inline-block;
}
div:first-child + div {
height: 100px;
width: 100px;
background: blue;
display: inline-block;
}
div:first-child + div + div {
height: 100px;
width: 100px;
background: fuchsia;
display: inline-block;
}
table {
display: inline-table;
margin-right: 1em;
border-collapse: collapse;
}
table, th, td {
border: 1px solid black;
}
thead th {
background: silver;
color: black;
}
</style>
<script type="text/javascript">
window.onload = function () {
var dragenterbefore = '', dragenterafter = '', dragoverbefore = '', dragoverafter = '';
var orange = document.getElementsByTagName('div')[0];
orange.ondragstart = function (e) {
e.dataTransfer.setData('text','http://example.com/');
e.dataTransfer.effectAllowed = 'all';
};
var fuchsia = document.getElementsByTagName('div')[2];
fuchsia.ondragenter = function (e) {
e.preventDefault();
if( e.dataTransfer.dropEffect != 'link' ) {
dragenterbefore = e.dataTransfer.dropEffect;
}
try {
e.dataTransfer.dropEffect = 'move';
} catch(e) {}
if( e.dataTransfer.dropEffect != 'move' ) {
dragenterafter = e.dataTransfer.dropEffect;
}
};
fuchsia.ondragover = function (e) {
e.preventDefault();
if( e.dataTransfer.dropEffect != 'link' ) {
dragoverbefore = e.dataTransfer.dropEffect;
}
try {
e.dataTransfer.dropEffect = 'move';
} catch(e) {}
if( e.dataTransfer.dropEffect != 'move' ) {
dragoverafter = e.dataTransfer.dropEffect;
}
};
fuchsia.ondrop = function (e) {
e.preventDefault();
document.getElementsByTagName('div')[3].innerHTML = ( dragenterbefore || dragenterafter || dragoverbefore || dragoverafter || e.dataTransfer.dropEffect != 'move' ) ? ( 'FAIL' +
( dragenterbefore ? ( '<br>dragenter.dropEffect was '+dragenterbefore+' instead of link' ) : '' ) +
( dragenterafter ? ( '<br>dragenter.dropEffect after writing was '+dragenterafter+' instead of move' ) : '' ) +
( dragoverbefore ? ( '<br>dragover.dropEffect was '+dragoverbefore+' instead of link' ) : '' ) +
( dragoverafter ? ( '<br>dragover.dropEffect after writing was '+dragoverafter+' instead of move' ) : '' ) +
( ( e.dataTransfer.dropEffect != 'move' ) ? ( '<br>drop.dropEffect was '+e.dataTransfer.dropEffect+' instead of move' ) : '' )
) : 'PASS';
};
};
</script>
</head>
<body>
<div draggable="true"></div>
<div></div>
<div></div>
<div> </div>
<ol>
<li>Drag the orange square over the blue square</li>
<li>Press the relevant modifier keys for your platform to request a "link" drop effect (eg. Alt on Windows, Ctrl+Shift on Unix/Linux, Command+Option on Mac)</li>
<li>Continue dragging over the pink square</li>
<li>If supported by the platform, the mouse cursor should show that a "move" drop effect will be used</li>
<li>Release the drag, then the keys</li>
<li>Fail if no new text appears above this list</li>
</ol>
</body>
</html>
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