<!DOCTYPE html>
<meta charset="utf-8">
<title>Last remembered size</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#last-remembered">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override">
<link rel="help" href="https://drafts.csswg.org/css-contain-2/#content-visibility">
<meta name="assert" content="Tests that the last remembered size works well in a variety of different elements or boxes." />

<style>
.test {
  width: max-content;
  height: max-content;
  border: 1px solid;
}
.test::before {
  content: "";
  display: block;
  width: 320px;
  height: 240px;
}
.contain-size {
  contain: size;
}
.auto-width {
  contain-intrinsic-width: auto 1px;
}
.auto-height {
  contain-intrinsic-height: auto 2px;
}
.auto-both {
  contain-intrinsic-size: auto 3px auto 4px;
}
.skip-contents .test {
  content-visibility: hidden;
}
.scroll {
  overflow: scroll;
}
.columns {
  columns: 60px 2;
}
.grid {
  display: grid;
}
.flex {
  display: flex;
}
</style>

<div id="log"></div>

<div id="tests">
  <div></div>
  <div class="scroll"></div>
  <div class="columns"></div>
  <div class="grid"></div>
  <div class="flex"></div>
  <fieldset></fieldset>
  <img src="resources/dice.png">
  <svg></svg>
  <canvas></canvas>
  <iframe></iframe>
  <video></video>
  <button></button>
  <select><option>Lorem ipsum</option></select>
  <select multiple><option>Lorem ipsum</option></select>
</div>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script>
function nextRendering() {
  return new Promise(resolve => {
    requestAnimationFrame(() => requestAnimationFrame(() => resolve()));
  });
}
addEventListener("load", async function() {
  const wrapper = document.getElementById("tests");
  const tests = new DocumentFragment();
  for (let template of wrapper.children) {
    template.classList.add("test");
    const autoWidthTest = template.cloneNode(true);
    const autoHeightTest = template.cloneNode(true);
    const autoBothTest = template.cloneNode(true);
    autoWidthTest.classList.add("auto-width");
    autoHeightTest.classList.add("auto-height");
    autoBothTest.classList.add("auto-both");

    const normalWidth = template.clientWidth;
    const normalHeight = template.clientHeight;
    template.classList.add("contain-size");
    const containedWidth = template.clientWidth;
    const containedHeight = template.clientHeight;

    autoWidthTest.dataset.expectedClientWidth = normalWidth;
    autoWidthTest.dataset.expectedClientHeight = containedHeight;
    autoHeightTest.dataset.expectedClientWidth = containedWidth;
    autoHeightTest.dataset.expectedClientHeight = normalHeight;
    autoBothTest.dataset.expectedClientWidth = normalWidth;
    autoBothTest.dataset.expectedClientHeight = normalHeight;

    tests.append(autoWidthTest, autoHeightTest, autoBothTest);
  }
  wrapper.textContent = "";
  wrapper.appendChild(tests);

  // Wait so that the last remembered size can be stored.
  await nextRendering();

  wrapper.classList.add("skip-contents");
  checkLayout(".test");
});
</script>
