tor-browser

The Tor Browser
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MouseEvent.preventDefault.html (3174B)

      1 <!DOCTYPE html>
      2 <html>
      3    <head>
      4        <title id='desc'> MouseEvent: mousedown - preventDefault() for text selection </title>
      5        <script type="text/javascript">
      6            var PassTest = function()
      7            {
      8                document.getElementById("testresult").firstChild.data = "PASS";
      9            }
     10 
     11            var FailTest = function()
     12            {
     13                document.getElementById("testresult").firstChild.data = "FAIL";
     14            }
     15 
     16            var EVENT1 = "mousedown";
     17            var EVENT2 = "mouseup";
     18            var TARGET;
     19            var DisableSelection = false;
     20            var DefaultPrevented = false;
     21            var BEFORE = 0;
     22            var AFTER = 0;
     23 
     24            function DisableTextSelection()
     25            {
     26                DisableSelection = true;
     27            }
     28 
     29            function TestEvent(evt)
     30            {
     31                if ((true == DisableSelection) && (EVENT1 == evt.type))
     32                {
     33                    evt.preventDefault();
     34                    DefaultPrevented = true;
     35                    BEFORE = evt.clientX;
     36                }
     37                if ((true == DisableSelection) && (EVENT2 == evt.type))
     38                {
     39                    AFTER = evt.clientX;
     40                }
     41            }
     42 
     43            function VerifyResult()
     44            {
     45                var distance = Math.abs(AFTER - BEFORE);
     46 
     47                if ((true == DefaultPrevented) && (10 < distance) && ("" == window.getSelection()))
     48                {
     49                    PassTest()
     50                }
     51                else
     52                {
     53                    FailTest();
     54                }
     55            }
     56 
     57            window.onload = function()
     58            {
     59                try
     60                {
     61                    TARGET = document.getElementById("target");
     62                    TARGET.addEventListener(EVENT1, TestEvent, false);
     63                    TARGET.addEventListener(EVENT2, TestEvent, false);
     64                }
     65                catch(ex)
     66                {
     67                    FailTest();
     68                }
     69            }
     70        </script>
     71    </head>
     72    <body>
     73        <h3>DOM Events</h3>
     74        <h4>
     75            Test Description: MouseEvent - Text selection is disabled after cancelling mousedown event.
     76        </h4>
     77 
     78        <span id="target" style="border:1px solid green; color:blue">&nbsp; Use mouse to select the whole line here &nbsp;</span>
     79 
     80        <p id="manualsteps">
     81            Steps:
     82            <ol>
     83                <li> Make sure text in the above green box can be selected using mouse
     84                <li> Dismiss the selection, if any, by clicking at the green box with mouse
     85                <li> Now, click the button: <button onclick="DisableTextSelection()">Disable Selection</button>
     86                <li> Drag mouse to select the whole line of the text inside the above green box
     87                <li> Click the button: <button id="verify" onclick="VerifyResult()">VerifyResult</button>
     88            </ol>
     89        </p>
     90        <p>Test passes if the word "PASS" appears below after following the above steps.</p>
     91        <div>Test result: </div>
     92        <div id='testresult'>FAIL</div>
     93    </body>
     94 </html>