dom/svg/test/tearoff_with_cc_helper.html

   1 <!DOCTYPE html>
   2 <html>
   3 <body onload="go()">
   4   <svg id="outerSvg" width="50%" height="50%"
   5        style="border: 1px solid black">
   6   </svg>
   7   <script type="application/javascript">
   8     /* I'm not sure what exactly was required to trigger bug 1288228's crash,
   9      * but it involved tweaking a length's specified units and cycle-collecting
  10      * and reloading (in some combination).  So, we'll tweak the units and
  11      * cycle-collect a few times, and message the outer page to reload us
  12      * after we've made the first tweak.
  13      */
  14     const maxTweaks = 5;
  15     let remainingTweaks = maxTweaks;
  16
  17     var savedBaseVal =  document.getElementById("outerSvg").width.baseVal;
  18     function go() {
  19       window.parent.SpecialPowers.DOMWindowUtils.cycleCollect();
  20       tweak();
  21     }
  22
  23     function tweak() {
  24       console.log("tweaked");
  25       savedBaseVal.convertToSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_PX);
  26       savedBaseVal.convertToSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_PERCENTAGE);
  27       if (remainingTweaks == maxTweaks) {
  28         window.parent.postMessage("ping", "*"); // only do this on first tweak
  29       }
  30       if (--remainingTweaks) {
  31         setTimeout(tweak, 0);
  32       }
  33     }
  34 </script>
  35 </body>
  36 </html>