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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=421640
+-->
+<head>
+ <title>Test for Bug 421640</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <script src="/tests/SimpleTest/EventUtils.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=421640">Mozilla Bug 421640</a>
+<div id="content">
+ <div id="edit" contenteditable="true">This text is editable</div>
+ <div><button id="button">Test</button></div>
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 421640 **/
+
+function test(click, focus, nextFocus) {
+ var wu = SpecialPowers.getDOMWindowUtils(window);
+
+ var selection = window.getSelection();
+ var edit = document.getElementById("edit");
+ var text = edit.firstChild;
+
+ selection.removeAllRanges();
+
+ var rect = edit.getBoundingClientRect();
+ wu.sendMouseEvent("mousedown", rect.left + 1, rect.top + 1, 0, 1, 0);
+ wu.sendMouseEvent("mousemove", rect.right - 1, rect.top + 1, 0, 1, 0);
+ wu.sendMouseEvent("mouseup", rect.right - 1, rect.top + 1, 0, 1, 0);
+
+ is(selection.anchorNode, text, "");
+
+ rect = document.getElementById("button").getBoundingClientRect();
+ wu.sendMouseEvent("mousedown", rect.left + 10, rect.top + 1, 0, 1, 0);
+ wu.sendMouseEvent("mouseup", rect.left + 10, rect.top + 1, 0, 1, 0);
+
+ is(selection.anchorNode, text, "");
+
+ SimpleTest.finish();
+}
+
+window.onload = function() {
+ SimpleTest.waitForExplicitFinish();
+ setTimeout(test, 0);
+};
+
+</script>
+</pre>
+</body>
+</html>