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<!DOCTYPE HTML>
<html>
<head>
  <title>Test for Bug 978847</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=978847">Mozilla Bug 978847</a>
<p id="display"></p>
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();

SimpleTest.waitForFocus(function() {
  var x;
  var y;

  // window should be constrained to the screen rect,
  // which we assume is less than 10000px square
  var w1 = window.open("about:blank", "", "left=16000,top=16000,width=100,height=100");
  SimpleTest.waitForFocus(function() {
    ok(w1.screenX < 10000 && w1.screenY < 10000,
       "window should not be opened off-screen: got location " +
       w1.screenX + "," + w1.screenY);
    x = w1.screenX;
    y = w1.screenY;
    w1.close();

    // larger window dimensions should result in a shift of the constrained location
    var w2 = window.open("about:blank", "", "left=16000,top=16000,width=150,height=150");
    SimpleTest.waitForFocus(function() {
      ok(w2.screenX == x - 50 && w2.screenY == y - 50,
         "constrained window position did not depend on size as expected: got " +
         w2.screenX + "," + w2.screenY + ", expected " + (x - 50) + "," + (y - 50));
      w2.close();

      // now try with coordinates that are close to MAXINT,
      // so adding width/height risks 32-bit integer overflow
      var w3 = window.open("about:blank", "", "left=2147483600,top=2147483600,width=100,height=100");
      SimpleTest.waitForFocus(function() {
        ok(w3.screenX < 10000 && w3.screenY < 10000,
           "window should not be opened off-screen: got location " +
           w3.screenX + "," + w3.screenY);
        w3.close();
        SimpleTest.finish();
      }, w3, true);
    }, w2, true);
  }, w1, true);
}, window, false);

</script>
</pre>
</body>
</html>