The Tor Browser: dom/events/test/test_bug607464.html@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 <!DOCTYPE HTML>

     2 <html>

     3 <!--

     4 https://bugzilla.mozilla.org/show_bug.cgi?id=607464

     5 -->

     6 <head>

     7   <title>Test for Bug 607464</title>

     8   <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

     9   <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>

    10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

    11 </head>

    12 <body>

    13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=607464">Mozilla Bug 607464</a>

    14 <p id="display"></p>

    15 <div id="content" style="display: none">

    17 </div>

    18 <pre id="test">

    19 <script type="application/javascript;version=1.7">

    21 /**

    22  * Test for Bug 607464:

    23  * Pixel scrolling shouldn't scroll smoothly, even if general.smoothScroll is on.

    24  **/

    26 function scrollDown15PxWithPixelScrolling(scrollbox) {

    27   var win = scrollbox.ownerDocument.defaultView;

    28   let event = {

    29     deltaMode: WheelEvent.DOM_DELTA_PIXEL,

    30     deltaY: 3.0,

    31     lineOrPageDeltaY: 1

    32   };

    33   // A pixel scroll with lineOrPageDeltaY.

    34   synthesizeWheel(scrollbox, 10, 10, event, win);

    35   // then 4 pixel scrolls without lineOrPageDeltaY.

    36   event.lineOrPageDeltaY = 0;

    37   for (let i = 0; i < 4; ++i) {

    38     synthesizeWheel(scrollbox, 10, 10, event, win);

    39   }

    41   // Note: the line scroll shouldn't have any effect because it has

    42   // hasPixels = true set on it. We send it to emulate normal

    43   // behavior.

    44 }

    46 function runTest() {

    47   var win = open('data:text/html,<!DOCTYPE html>\n' +

    48     '<div id="scrollbox" style="height: 100px; overflow: auto;">' +

    49     '  <div style="height: 1000px;"></div>' +

    50     '</div>', '_blank', 'width=300,height=300');

    51   SimpleTest.waitForFocus(function () {

    52     var scrollbox = win.document.getElementById("scrollbox");

    53     let scrollTopBefore = scrollbox.scrollTop;

    55     scrollDown15PxWithPixelScrolling(scrollbox);

    57     // wait for the next refresh driver run

    58     window.mozRequestAnimationFrame(function() {

    59       // actually, wait for the next one before checking results, since

    60       // scrolling might not be flushed until after this code has run

    61       window.mozRequestAnimationFrame(function() {

    62         is(scrollbox.scrollTop, scrollTopBefore + 15,

    63            "Pixel scrolling should have finished after one refresh driver iteration. " +

    64            "We shouldn't be scrolling smoothly, even though the pref is set.");

    65         win.close();

    66         clearPrefs();

    67         SimpleTest.finish();

    68       });

    69     });

    70   }, win);

    71 }

    73 function initPrefs()

    74 {

    75   // Disables the app level scroll acceleration

    76   SpecialPowers.setIntPref("mousewheel.acceleration.start", -1);

    77   SpecialPowers.setBoolPref("mousewheel.system_scroll_override_on_root_content.enabled", false);

    79   // Enables smooth scrolling

    80   SpecialPowers.setBoolPref("general.smoothScroll", true);

    81 }

    83 function clearPrefs()

    84 {

    85   SpecialPowers.clearUserPref("mousewheel.acceleration.start");

    86   SpecialPowers.clearUserPref("mousewheel.system_scroll_override_on_root_content.enabled");

    87   SpecialPowers.clearUserPref("general.smoothScroll");

    88 }

    90 window.onload = function () {

    91   initPrefs();

    92   SimpleTest.executeSoon(runTest);

    93 }

    95 SimpleTest.waitForExplicitFinish();

    97 </script>

    98 </pre>

   100 </body>

   101 </html>

The Tor Browser / file revision