helper_zoomToFocusedInput_dynamic_toolbar_bug1828235.html

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<!DOCTYPE>

<html>

<head>

  <title>Bug 1828235 - Dynamic toolbar causes errant zoom on input focus for certain page heights</title>

  <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1" />

  <script type="application/javascript" src="apz_test_utils.js"></script>

  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>

  <script src="/tests/SimpleTest/paint_listener.js"></script>

</head>

<style type="text/css">

  .touch-none {

    /* This size ensures the page height is taller than the viewport height without the dynamic toolbar

     * but shorter than the viewport height with the dyanmic toolbar, which we need to trigger the bug. */

    height: 98lvh;

    margin: 0;

    touch-action: none;

</style>

<body>

  <div class="touch-none">

    <input id="input1">

  </div>

  <script type="application/javascript">

    async function test() {

      let utils = SpecialPowers.getDOMWindowUtils(window);

      let resolution = await getResolution();

      ok(resolution > 0,

        "The initial_resolution is " + resolution + ", which is some sane value");

      document.getElementById('input1').focus();

      await waitToClearOutAnyPotentialScrolls(window);

      await promiseApzFlushedRepaints();

      let prev_resolution = resolution;

      resolution = await getResolution();

      ok(resolution == prev_resolution, "focusing input1 did not change resolution " + resolution);

      utils.zoomToFocusedInput();

      await waitToClearOutAnyPotentialScrolls(window);

      await promiseApzFlushedRepaints();

      await promiseApzFlushedRepaints();

      resolution = await getResolution();

      ok(resolution == prev_resolution, "zoomToFocusedInput input1 did not change resolution " + resolution);

    SpecialPowers.getDOMWindowUtils(window).setDynamicToolbarMaxHeight(100);

    waitUntilApzStable().then(test).then(subtestDone, subtestFailed);

  </script>

</body>

</html>