<!DOCTYPE html><!-- webkit-test-runner [ experimental:CSSPaintingAPIEnabled=true ] -->
<meta name="author" title="Justin Michaud" href="mailto:justin_michaud@webkit.org">
<meta name="assert" content="Test that paint worklets repaint when modules are added, and correctly watch properties">
<link rel="help" content="https://drafts.css-houdini.org/css-paint-api-1/">
<script src="resources/testharness.js"></script>

<script id="code" type="text/worklet">
  class MyPaint {
    static get inputProperties() { return ['--my-prop']; }

    paint(ctx, geom, properties) {
      if (properties.get('--my-prop') == 5) {
        ctx.fillStyle = "green";
      } else {
        ctx.fillStyle = "red";
      }
      ctx.fillRect(0, 0, geom.width, geom.height);
    }
  }
  registerPaint('my-paint', MyPaint);
</script>

<script type="text/javascript">
function onload() {
  if (window.testRunner && window.internals) {
    window.testRunner.dumpAsText(false);
    window.internals.startTrackingRepaints();
  }

  // FIXME: Once importWorklet returns a promise, these setTimeouts should go away.
  setTimeout(function() {
    importWorklet(CSS.paintWorklet, document.getElementById('code').textContent);
  }, 500);

  setTimeout(function() {
    paint.style.setProperty('--my-prop', 5);
  }, 2000);

  setTimeout(function() {
    var repaintRects = "No test runner";
    if (window.testRunner && window.internals) {
      // force a style recalc.
      var dummy = document.body.offsetTop;
      repaintRects = window.internals.repaintRectsAsText();
      window.internals.stopTrackingRepaints();
    }

    var pre = document.createElement('pre');
    document.body.appendChild(pre);
    pre.innerHTML = repaintRects;
  }, 2500);
}
</script>

<style>
  #paint {
    background-image: paint(my-paint);
    width: 150px;
    height: 150px;
  }
</style>

<body onload="onload()">
  <div id="paint"></div>
</body>