Created
November 23, 2013 21:12
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[draggable=true]{ | |
position: absolute; | |
top: 50px; | |
cursor: move; | |
box-shadow: 4px 0px 12px; | |
padding: .25em .5em | |
} |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset=utf-8 /> | |
<title>JS Bin</title> | |
</head> | |
<body> | |
<label>copy<input type="radio" name="cursor" value="copy" checked></label> | |
<label>move<input type="radio" name="cursor" value="move"></label> | |
<label>link<input type="radio" name="cursor" value="link"></label> | |
<label>none<input type="radio" name="cursor" value="none"></label> | |
<!-- --> | |
<div draggable="true" id="drag">draggable</div> | |
</body> | |
</html> |
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function getCursor() { | |
var cursor = document.getElementsByName("cursor") | |
for(var i=cursor.length; i--;){ | |
if ( cursor[i].checked) break | |
} | |
return cursor[i].value | |
} | |
function dragstart(event){ | |
if (event.target.draggable && event.target.tagName) { | |
var dt = event.dataTransfer | |
dt.setData("id", event.target.id); // text, text/palin だとロケーションバーにドロップでき、その文字で検索されてしまう | |
dt.setData("application/x-moz-node", event.target); // 移動だけなら正直この2つは無くても良い。データの受け渡しはしないので | |
dt.setData("text/html", event.target.innerHTML); | |
dt.setData("clickPosY", event.clientY - event.target.getBoundingClientRect().top) | |
dt.setData("clickPosX", event.clientX - event.target.getBoundingClientRect().left) | |
dt.effectAllowed = getCursor() | |
dt.dropEffect = getCursor() | |
} | |
} | |
function dragover(event){ | |
//Firefoxでテキストがdropされないように、要素が選択されている時のみにする | |
event.dataTransfer.getData("clickPosY") && event.preventDefault(); | |
} | |
function drop(event){ | |
var id = event.dataTransfer.getData("id") | |
, el = document.getElementById(id) | |
el.style.top = event.pageY - event.dataTransfer.getData("clickPosY") + "px" | |
el.style.left = event.pageX - event.dataTransfer.getData("clickPosX") + "px" | |
} | |
document.getElementById("drag").addEventListener("dragstart", dragstart, false) | |
document.addEventListener("dragover", dragover, false) | |
document.addEventListener("drop", drop, false) |
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