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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
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layout/base/tests/test_bug1120705.html
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layout/base/tests/test_bug1120705.html
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<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test for Bug 1120705</title>
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<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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</head>
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<body>
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<p id="display"></p>
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<select id="sel">
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<option value="1">1</option>
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<option value="2">2</option>
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<option value="3">3</option>
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<option value="4">4</option>
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<option value="5">5</option>
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<option value="6">6</option>
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<option value="7">7</option>
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<option value="8">8</option>
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<option value="9">9</option>
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<option value="10">10</option>
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<option value="11">11</option>
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<option value="12">12</option>
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<option value="13">13</option>
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<option value="14">14</option>
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<option value="15">15</option>
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<option value="16">16</option>
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<option value="17">17</option>
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<option value="18">18</option>
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<option value="19">19</option>
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<option value="20">20</option>
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</select>
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<pre id="test">
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<script class="testbody" type="text/javascript">
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function clickDownButton() {
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var sel = document.getElementById("sel");
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var scrollbar_width = sel.offsetWidth - sel.clientWidth;
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synthesizeMouse(sel,
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sel.offsetWidth - scrollbar_width / 2,
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sel.offsetHeight - scrollbar_width / 2,
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{ type: "mousedown" });
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synthesizeMouse(sel,
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sel.offsetWidth - scrollbar_width / 2,
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sel.offsetHeight - scrollbar_width / 2,
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{ type: "mouseup" });
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}
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SimpleTest.waitForExplicitFinish();
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addLoadEvent(function() {
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SpecialPowers.pushPrefEnv({
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"set": [["general.smoothScroll", false],
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["toolkit.scrollbox.verticalScrollDistance", 3]]},
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function() {
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var sel = document.getElementById("sel");
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sel.size = 2;
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sel.scrollTo(0, 0);
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clickDownButton();
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window.requestAnimationFrame(function() {
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var restricted_top = sel.scrollTop;
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isnot(restricted_top, 0,
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"Expected to scroll when clicking scrollbar button");
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sel.size = 10;
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sel.scrollTo(0, 0);
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clickDownButton();
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window.requestAnimationFrame(function() {
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isnot(sel.scrollTop, restricted_top,
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"Scrollbar button scrolling should be limited by page size");
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SimpleTest.finish();
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});
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});
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});
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});
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</script>
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</pre>
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</body>
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</html>
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