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<!DOCTYPE HTML>
<title>Canvas Tests</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<body>
<script>

SimpleTest.waitForExplicitFinish();
const Cc = SpecialPowers.Cc;
const Cr = SpecialPowers.Cr;
SpecialPowers.setBoolPref("canvas.focusring.enabled", true);
</script>

<p>Canvas test: drawFocusIfNeeded</p>
<canvas id="c689" class="output" width="50" height="25">
    <input id="button3" type="range" min="1" max="12"></input>
    <input id="button4" type="range" min="1" max="12"></input>
</canvas>
<script type="text/javascript">
function isEmptyCanvas(ctx, w, h) {
  var imgdata = ctx.getImageData(0, 0, w, h);
  for(var x = 0; x < w*h*4; x++)
    if(imgdata.data[x] != 0)
      return false;
  return true;
}

function test_drawFocusIfNeeded_canvas() {
  var c = document.getElementById("c689");
  var ctx = c.getContext("2d");
  var b1 = document.getElementById('button3');
  var b2 = document.getElementById('button4');
  ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
  ctx.beginPath();
  ctx.rect(10, 10, 30, 30);
  ctx.drawFocusIfNeeded(b1);
  ok(isEmptyCanvas(ctx, ctx.canvas.width, ctx.canvas.height), "focus of button 1 is drawn");

  ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
  ctx.beginPath();
  ctx.rect(50, 10, 30, 30);
  ctx.drawFocusIfNeeded(b2);
  ctx.rect(50, 10, 30, 30);
  ctx.drawFocusIfNeeded(b2);
  ok(isEmptyCanvas(ctx, ctx.canvas.width, ctx.canvas.height), "focus of button 2 is drawn");

  b1.focus();
  ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
  ctx.beginPath();
  ctx.rect(10, 10, 30, 30);
  ctx.drawFocusIfNeeded(b1);
  ok(!isEmptyCanvas(ctx, ctx.canvas.width, ctx.canvas.height) , "focus of button 1 is not drawn");
}
</script>


<script>

function runTests() {
 try {
  test_drawFocusIfNeeded_canvas();
 } catch(e) {
  ok(false, "unexpected exception thrown in: test_drawFocusIfNeeded_canvas");
  throw e;
 }

 SpecialPowers.setBoolPref("canvas.focusring.enabled", false);
 SimpleTest.finish();
}

addLoadEvent(runTests);

</script>