gecko-dev/layout/forms/test/test_bug534785.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=534785
-->
<head>
<title>Test for Bug 534785</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=534785">Mozilla Bug 534785</a>
<p id="display"></p>
<input type="text" value="test">
<div id="reframe">
<textarea></textarea>
<textarea>test</textarea>
<input type="text">
<input type="text" value="test">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 534785 **/
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(function() {
var i = document.querySelector("input");
i.addEventListener("focus", function() {
is(i.value, "test", "Sanity check");
is(document.activeElement, i, "Should be focused before frame reconstruction");
sendString("1");
is(i.value, "1test", "Can accept keyboard events before frame reconstruction");
// force frame reconstruction
i.style.display = "none";
document.offsetHeight;
i.style.display = "";
document.offsetHeight;
is(document.activeElement, i, "Should be focused after frame reconstruction");
sendString("2");
is(i.value, "12test", "Can accept keyboard events after frame reconstruction");
// Make sure reframing happens gracefully
var reframeDiv = document.getElementById("reframe");
var textAreaWithoutValue = reframeDiv.querySelectorAll("textarea")[0];
var textAreaWithValue = reframeDiv.querySelectorAll("textarea")[1];
var inputWithoutValue = reframeDiv.querySelectorAll("input")[0];
var inputWithValue = reframeDiv.querySelectorAll("input")[1];
reframeDiv.style.display = "none";
document.body.offsetWidth;
reframeDiv.style.display = "";
document.body.offsetWidth;
[textAreaWithoutValue, inputWithoutValue].forEach(function (elem) {
is(elem.value, "", "Value should persist correctly");
});
[textAreaWithValue, inputWithValue].forEach(function (elem) {
is(elem.value, "test", "Value should persist correctly");
});
[inputWithoutValue, inputWithValue].forEach(elem => elem.type = "submit");
document.body.offsetWidth;
is(inputWithoutValue.value, "", "Value should persist correctly");
is(inputWithValue.value, "test", "Value should persist correctly");
[inputWithoutValue, inputWithValue].forEach(elem => elem.type = "text");
document.body.offsetWidth;
is(inputWithoutValue.value, "", "Value should persist correctly");
is(inputWithValue.value, "test", "Value should persist correctly");
[inputWithoutValue, inputWithValue].forEach(elem => elem.focus()); // initialze the editor
reframeDiv.style.display = "none";
document.body.offsetWidth;
reframeDiv.style.display = "";
document.body.offsetWidth;
is(inputWithoutValue.value, "", "Value should persist correctly with editor");
is(inputWithValue.value, "test", "Value should persist correctly with editor");
SimpleTest.finish();
});
i.focus();
});
</script>
</pre>
</body>
</html>