chao
/
mini_cocopi


			
				
					
						
						
							1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465
							<!DOCTYPE html>
<html>
<!--
Copyright 2010 The Closure Library Authors. All Rights Reserved.

Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
  <title>goog.events.FileDropHandler Demo</title>
  <script src="../base.js"></script>
  <script>
    goog.require('goog.debug.DivConsole');
    goog.require('goog.dom');
    goog.require('goog.events.FileDropHandler');
    goog.require('goog.log');
  </script>
  <link rel="stylesheet" href="css/demo.css">
</head>
<body>
  <h2>Demo of goog.events.FileDropHandler</h2>

  <fieldset>
    <legend>Demo of the <strong>goog.events.FileDropHandler</strong>:</legend>
    <label>goog.events.FileDropHandler detects file drag and drop events in
    elements. Try dropping a file in the textarea below and watch the event
    log at the bottom of the page. Try dropping some text too.<br></label>
    <textarea id="drop-zone" rows="5" cols="50"></textarea>
  </fieldset>

  <fieldset class="goog-debug-panel">
    <legend>Event Log</legend>
    <div id="log" style="height: 400px;"></div>
  </fieldset>

  <script>
    var dropZone = goog.dom.getElement('drop-zone');
    var handler = new goog.events.FileDropHandler(dropZone, true);
    var logger = goog.log.getLogger('demo');

    goog.events.listen(handler, goog.events.FileDropHandler.EventType.DROP,
        function(e) {
          goog.log.log(logger, goog.log.Level.SHOUT, 'DROP event detected!');
          goog.log.info(logger, 'dataTransfer:\n' +
              goog.debug.deepExpose(e.getBrowserEvent().dataTransfer));
          var files = e.getBrowserEvent().dataTransfer.files;
          for (var i = 0; i < files.length; i++) {
            // If you want to access the filename you should try both
            // alternatives.
            var file = files[i];
            var fileName = file.name || file.fileName;
            goog.log.info(logger, 'File name: ' + fileName);
            // Sample code to upload the dropped files (commented out).
            // var xhr = new goog.net.XmlHttp();
            // xhr.open('POST', 'http://www.myserver.com/upload');
            // xhr.send(file);
          }
        });

    goog.debug.LogManager.getRoot().setLevel(goog.log.Level.FINER);
    var logconsole = new goog.debug.DivConsole(goog.dom.getElement('log'));
    logconsole.setCapturing(true);
  </script>
</body>
</html>