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56 lines
1.4 KiB
HTML
56 lines
1.4 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=468167
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-->
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<head>
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<title>Test for Bug 468167</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<script type="application/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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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=468167">Mozilla Bug 468167</a>
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<p id="display">
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<textarea id="ta" rows="10" cols="80"></textarea>
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</p>
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<pre id="test">
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<script type="application/javascript">
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/** Test for Bug 468167 **/
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SimpleTest.waitForExplicitFinish();
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SimpleTest.waitForFocus(runTests);
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function runTests()
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{
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var ta = document.getElementById("ta");
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ta.focus();
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is(ta.scrollTop, 0, "initially scrolled to top");
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var s = "";
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for (var i = 0; i < 40; ++i) {
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// three characters per line
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if (i < 10)
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s += "0";
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s += i + "\n";
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}
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ta.value = s;
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is(ta.scrollTop, 0, "scrolled to top after adding content");
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ta.scrollTop = 9999; // scroll down as far as we can
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isnot(ta.scrollTop, 0, "scrolled down after scrolling down");
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ta.setSelectionRange(0, 99); // 33 lines out of 40
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// Send a backspace key event to delete the selection
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synthesizeKey("VK_BACK_SPACE", { });
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is(ta.scrollTop, 0, "scrolled to top after deleting selection");
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SimpleTest.finish();
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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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