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Created June 24, 2012 01:58
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Ejemplo de drag & drop upload (By Craig Buckler)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>HTML5 File Drag &amp; Drop API</title>
<style>
/*
Styles for HTML5 File Drag & Drop demonstration
Featured on SitePoint.com
Developed by Craig Buckler (@craigbuckler) of OptimalWorks.net
*/
body
{
font-family: "Segoe UI", Tahoma, Helvetica, freesans, sans-serif;
font-size: 90%;
margin: 10px;
color: #333;
background-color: #fff;
}
h1, h2
{
font-size: 1.5em;
font-weight: normal;
}
h2
{
font-size: 1.3em;
}
legend
{
font-weight: bold;
color: #333;
}
#filedrag
{
display: none;
font-weight: bold;
text-align: center;
padding: 1em 0;
margin: 1em 0;
color: #555;
border: 2px dashed #555;
border-radius: 7px;
cursor: default;
}
#filedrag.hover
{
color: #f00;
border-color: #f00;
border-style: solid;
box-shadow: inset 0 3px 4px #888;
}
img
{
max-width: 100%;
}
pre
{
width: 95%;
height: 8em;
font-family: monospace;
font-size: 0.9em;
padding: 1px 2px;
margin: 0 0 1em auto;
border: 1px inset #666;
background-color: #eee;
overflow: auto;
}
#messages
{
padding: 0 10px;
margin: 1em 0;
border: 1px solid #999;
}
#progress p
{
display: block;
width: 240px;
padding: 2px 5px;
margin: 2px 0;
border: 1px inset #446;
border-radius: 5px;
background: #eee url("progress.png") 100% 0 repeat-y;
}
#progress p.success
{
background: #0c0 none 0 0 no-repeat;
}
#progress p.failed
{
background: #c00 none 0 0 no-repeat;
}
</style>
</head>
<body>
<form id="upload" action="index.html" method="POST" enctype="multipart/form-data">
<fieldset>
<legend>HTML File Upload</legend>
<input type="hidden" id="MAX_FILE_SIZE" name="MAX_FILE_SIZE" value="300000" />
<div>
<label for="fileselect">Files to upload:</label>
<input type="file" id="fileselect" name="fileselect[]" multiple="multiple" />
<div id="filedrag">or drop files here</div>
</div>
<div id="submitbutton">
<button type="submit">Upload Files</button>
</div>
</fieldset>
</form>
<div id="messages">
<p>Status Messages</p>
</div>
<script>
/*
filedrag.js - HTML5 File Drag & Drop demonstration
Featured on SitePoint.com
Developed by Craig Buckler (@craigbuckler) of OptimalWorks.net
*/
(function() {
// getElementById
function $id(id) {
return document.getElementById(id);
}
// output information
function Output(msg) {
var m = $id("messages");
m.innerHTML = msg + m.innerHTML;
}
// file drag hover
function FileDragHover(e) {
e.stopPropagation();
e.preventDefault();
e.target.className = (e.type == "dragover" ? "hover" : "");
}
// file selection
function FileSelectHandler(e) {
// cancel event and hover styling
FileDragHover(e);
// fetch FileList object
var files = e.target.files || e.dataTransfer.files;
// process all File objects
for (var i = 0, f; f = files[i]; i++) {
ParseFile(f);
}
}
// output file information
function ParseFile(file) {
Output(
"<p>File information: <strong>" + file.name +
"</strong> type: <strong>" + file.type +
"</strong> size: <strong>" + file.size +
"</strong> bytes</p>"
);
}
// initialize
function Init() {
var fileselect = $id("fileselect"),
filedrag = $id("filedrag"),
submitbutton = $id("submitbutton");
// file select
fileselect.addEventListener("change", FileSelectHandler, false);
// is XHR2 available?
var xhr = new XMLHttpRequest();
if (xhr.upload) {
// file drop
filedrag.addEventListener("dragover", FileDragHover, false);
filedrag.addEventListener("dragleave", FileDragHover, false);
filedrag.addEventListener("drop", FileSelectHandler, false);
filedrag.style.display = "block";
// remove submit button
submitbutton.style.display = "none";
}
}
// call initialization file
if (window.File && window.FileList && window.FileReader) {
Init();
}
})();
</script>
</body>
</html>
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