tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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038.xhtml (6695B)

      1 <?xml version="1.0" encoding="utf-8"?>
      2 <html xmlns="http://www.w3.org/1999/xhtml">
      3 <head>
      4 <title>dataTransfer.items and getData during canvas drag and drop</title>
      5 <style type="text/css">
      6 div
      7  {height:100px;
      8  width:100px;
      9  padding:20px;
     10  background-color:silver;}
     11 </style>
     12 <script type="application/ecmascript">
     13 <![CDATA[
     14 var dataTypes = ['text/plain', 'text/uri-list', 'application/xml', 'application/xhtml+xml', 'application/mathml+xml', 'image/svg+xml', 'text/html', 'text/x-example'],
     15 data = ['PASS', 'data:text/plain,1', '<result>PASS</result>', '<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Data store item</title></head><body><p>PASS</p></body></html>', '<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn></math>', '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100px" height="50px" viewBox="0 0 100 50"><text x="0" y="40" font-size="40" fill="green">PASS</text></svg>', '<!DOCTYPE html><html><head><title>Data store item</title></head><body><p>PASS</p></body></html>', 'PASS'],
     16 e = 0, result = true;
     17 function start(event)
     18  {event.dataTransfer.items.clear();
     19  event.dataTransfer.effectAllowed = 'copy';
     20  for(var i = 0; i != dataTypes.length; i++)
     21    {event.dataTransfer.items.add(data[i],dataTypes[i])}
     22  if(event.dataTransfer.items.length != dataTypes.length)
     23      {say('items.length (ondragstart) : FAIL (items.length should be' + dataTypes.length + ')')}
     24  for(var i = 0; i != dataTypes.length; i++)
     25    {if(event.dataTransfer.getData(dataTypes[i]) != data[i])
     26      {say('getData (ondragstart): FAIL (getData(' + dataTypes[i] + ') returns wrong data)')}
     27    }
     28  for(var i = 0; i != event.dataTransfer.items.length; i++)
     29    {if(event.dataTransfer.items[i].kind != 'string')
     30      {say('Item kind (ondragstart): FAIL (items[' + i + '].kind should be string)')}
     31    if(event.dataTransfer.items[i].type != dataTypes[i])
     32      {say('Item type (ondragstart): FAIL (items[' + i + '].type should be' + dataTypes[i] + ')')}
     33    event.dataTransfer.items[i].getAsString(
     34      function ()
     35        {if(arguments[0] != data[e++])
     36          {say('getAsString : FAIL (items[' + i + '].getAsString should pass' + data[e] + ')')}
     37        }
     38      );
     39    }
     40  }
     41 function dragElement(event)
     42  {event.dataTransfer.items.clear();
     43  if(event.dataTransfer.items.length != dataTypes.length)
     44    {say('items.length (ondrag) : FAIL (items.length should be' + dataTypes.length + ')')}
     45  for(var i = 0; i != event.dataTransfer.items.length; i++)
     46    {if(event.dataTransfer.items[i].kind != 'string')
     47      {say('Item kind (ondrag): FAIL (items[' + i + '].kind should be string)')}
     48    if(event.dataTransfer.items[i].type != dataTypes[i])
     49      {say('Item type (ondrag): FAIL (items[' + i + '].type should be' + dataTypes[i] + ')')}
     50    event.dataTransfer.items[i].getAsString(
     51      function ()
     52        {if(arguments[0])
     53          {say('getAsString : FAIL (items[' + i + '].getAsString should not reveal data to drag event handler)')}
     54        }
     55      );
     56    }
     57  }
     58 function enterElement(event)
     59  {event.preventDefault();
     60  event.dataTransfer.items.clear();
     61  if(event.dataTransfer.items.length != dataTypes.length)
     62    {say('items.length (ondragenter) : FAIL (items.length should be' + dataTypes.length + ')')}
     63  for(var i = 0; i != event.dataTransfer.items.length; i++)
     64    {delete event.dataTransfer.items[i];
     65    if(event.dataTransfer.items[i].kind != 'string')
     66      {say('Item kind (ondragenter): FAIL (items[' + i + '].kind should be string)')}
     67    if(event.dataTransfer.items[i].type != dataTypes[i])
     68      {say('Item type (ondragenter): FAIL (items[' + i + '].type should be' + dataTypes[i] + ')')}
     69    event.dataTransfer.items[i].getAsString(
     70      function ()
     71        {if(arguments[0])
     72          {say('getAsString : FAIL (items[' + i + '].getAsString should not reveal data to drag event handler)')}
     73        }
     74      );
     75    }
     76  }
     77 function overElement(event)
     78  {event.preventDefault();
     79  event.dataTransfer.items.clear();
     80  if(event.dataTransfer.items.length != dataTypes.length)
     81    {say('items.length (ondragover) : FAIL (items.length should be' + dataTypes.length + ')')}
     82  for(var i = 0; i != event.dataTransfer.items.length; i++)
     83    {if(event.dataTransfer.items[i].kind != 'string')
     84      {say('Item kind (ondragover): FAIL (items[' + i + '].kind should be string)')}
     85    if(event.dataTransfer.items[i].type != dataTypes[i])
     86      {say('Item type (ondragover): FAIL (items[' + i + '].type should be' + dataTypes[i] + ')')}
     87    event.dataTransfer.items[i].getAsString(
     88      function ()
     89        {if(arguments[0])
     90          {say('getAsString : FAIL (items[' + i + '].getAsString should not reveal data to dragover event handler)')}
     91        }
     92      );
     93    }
     94  }
     95 function dataDrop(event)
     96  {e = 0;
     97  event.dataTransfer.items.clear();
     98  if(event.dataTransfer.items.length != dataTypes.length)
     99      {say('items.length (ondrop) : FAIL (items.length should be' + dataTypes.length + ')')}
    100  for(var i = 0; i != dataTypes.length; i++)
    101    {if(event.dataTransfer.getData(dataTypes[i]) != data[i])
    102      {say('getData (ondrop): FAIL (getData(' + dataTypes[i] + ') returns wrong data)')}
    103    }
    104  for(var i = 0; i != event.dataTransfer.items.length; i++)
    105    {delete event.dataTransfer.items[i];
    106    if(event.dataTransfer.items[i].kind != 'string')
    107      {say('Item kind (ondrop): FAIL (items[' + i + '].kind should be string)')}
    108    if(event.dataTransfer.items[i].type != dataTypes[i])
    109      {say('Item type (ondrop): FAIL (items[' + i + '].type should be' + dataTypes[i] + ')')}
    110    event.dataTransfer.items[i].getAsString(
    111      function ()
    112        {if(arguments[0] != data[e++])
    113          {say('getAsString : FAIL (items[' + i + '].getAsString should pass' + data[e] + ')')}
    114        }
    115      );
    116    }
    117  document.querySelector('div').setAttribute('style','background-color:' + (result?'green':'red'));}
    118 function say(it)
    119  {result = false;
    120  document.querySelector('pre').appendChild(document.createTextNode(it + '\n'));}
    121 ]]>
    122 </script>
    123 </head>
    124 <body>
    125 <p>
    126  <canvas width="100" height="100" draggable="true" ondragstart="start(event)" ondrag="dragElement(event)">Canvas</canvas>
    127 </p>
    128 <p>Drag canvas pattern to the silver box below and drop it. Silver box should turn green.</p>
    129 <div ondragenter="enterElement(event)" ondragover="overElement(event)" ondrop="dataDrop(event)"/>
    130 <pre/>
    131 <script type="application/ecmascript">
    132 var canvas = document.querySelector('canvas'),
    133 c = canvas.getContext('2d');
    134 for(var x = 0; x != 50; x++)
    135  {c.fillStyle = (x%2 == 0)?'navy':'white';
    136  c.beginPath();
    137  c.moveTo(x,x);
    138  c.lineTo(100-x,x);
    139  c.lineTo(100-x,100-x);
    140  c.lineTo(x,100-x);
    141  c.closePath();
    142  c.fill();}
    143 data[1] = canvas.toDataURL('image/png');
    144 </script>
    145 </body>
    146 </html>