tor-browser

The Tor Browser
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helper_focus_state_bug1860414.html (3859B)

      1 <!DOCTYPE html>
      2 <html>
      3 <head>
      4  <meta charset="utf-8">
      5  <meta name="viewport" content="initial-scale=1,width=device-width">
      6  <script src="apz_test_utils.js"></script>
      7  <script src="apz_test_native_event_utils.js"></script>
      8  <script src="/tests/SimpleTest/EventUtils.js"></script>
      9  <script src="/tests/SimpleTest/NativeKeyCodes.js"></script>
     10  <script src="/tests/SimpleTest/paint_listener.js"></script>
     11  <style>
     12 body {
     13  margin: 0;
     14  padding: 0;
     15 }
     16 .spacer {
     17  height: 5000px;
     18 }
     19 
     20 #target {
     21  height:50px;
     22  width: 50px;
     23 }
     24 
     25 #target:focus {
     26  outline: none;
     27 }
     28  </style>
     29 </head>
     30 <body>
     31  <div class="spacer">
     32  </div>
     33  <div tabindex=1 id="target">
     34  </div>
     35 </body>
     36 <script>
     37 
     38 function nativeHomeKey() {
     39  switch (getPlatform()) {
     40    case "windows":
     41      return WIN_VK_HOME;
     42    case "mac":
     43      return MAC_VK_Home;
     44  }
     45  throw new Error(
     46    "Native key events not supported on platform " + getPlatform()
     47  );
     48 }
     49 
     50 function nativeEndKey() {
     51  switch (getPlatform()) {
     52    case "windows":
     53      return WIN_VK_END;
     54    case "mac":
     55      return MAC_VK_End;
     56  }
     57  throw new Error(
     58    "Native key events not supported on platform " + getPlatform()
     59  );
     60 }
     61 
     62 function nativeTabKey() {
     63  switch (getPlatform()) {
     64    case "windows":
     65      return WIN_VK_TAB;
     66    case "mac":
     67      return MAC_VK_Tab;
     68  }
     69  throw new Error(
     70    "Native key events not supported on platform " + getPlatform()
     71  );
     72 }
     73 
     74 async function test() {
     75  let utils = SpecialPowers.DOMWindowUtils;
     76 
     77  if (!SpecialPowers.getBoolPref("apz.keyboard.focus-optimization")) {
     78    ok(true, "Skip test if paints are not guaranteed on each focus changing event");
     79    return;
     80  }
     81 
     82  is(document.scrollingElement.scrollTop, 0, "No scroll should have occured yet");
     83 
     84  utils.advanceTimeAndRefresh(50);
     85  utils.restoreNormalRefresh();
     86  await promiseApzFlushedRepaints();
     87  await promiseFrame();
     88 
     89  let transformEndPromise = promiseTransformEnd();
     90 
     91  info("Synthesize a End key to trigger keyboard scroll to the bottom");
     92  await new Promise(resolve => {
     93    synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, nativeEndKey(), {},
     94                        "", "", resolve);
     95  });
     96 
     97  await transformEndPromise;
     98  await promiseApzFlushedRepaints();
     99  await promiseFrame();
    100 
    101  is(checkHasAsyncKeyScrolled(), false,
    102     "We should have no async scrolls in the test setup");
    103 
    104  info("Synthesize a TAB key to trigger a focus state change");
    105  await new Promise(resolve => {
    106    synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, nativeTabKey(), {},
    107                        "", "", resolve);
    108  });
    109  // Remove focus from the target to ensure that we can async scroll.
    110  target.blur();
    111 
    112  utils.advanceTimeAndRefresh(50);
    113  utils.restoreNormalRefresh();
    114  await promiseApzFlushedRepaints();
    115 
    116  info("Synthesize a Home key to trigger keyboard scroll to the top");
    117  transformEndPromise = promiseTransformEnd();
    118  await new Promise(resolve => {
    119    synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, nativeHomeKey(), {},
    120                        "", "", resolve);
    121  });
    122 
    123  await transformEndPromise;
    124  await promiseApzFlushedRepaints();
    125  await promiseFrame();
    126 
    127  is(checkHasAsyncKeyScrolled(), true,
    128     "The focus change should not have invalidated our focus state");
    129 }
    130 
    131 function checkHasAsyncKeyScrolled() {
    132  // Reconstruct the APZC tree structure in the last paint.
    133  var apzcTree = getLastApzcTree();
    134  var rcd = findRcdNode(apzcTree);
    135 
    136  if (rcd) {
    137    return rcd.hasAsyncKeyScrolled === "1";
    138  }
    139 
    140  info("Last paint rcd is null");
    141  return false;
    142 }
    143 
    144 function isOnChaosMode() {
    145  return SpecialPowers.Services.env.get("MOZ_CHAOSMODE");
    146 }
    147 
    148 if ((getPlatform() == "mac" || getPlatform() == "windows") &&
    149    !isOnChaosMode()) {
    150  waitUntilApzStable()
    151  .then(test)
    152  .then(subtestDone, subtestFailed);
    153 } else {
    154  ok(true, "Skipping test, native key events are not supported on " +
    155     getPlatform());
    156  subtestDone();
    157 }
    158 </script>
    159 </html>