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Bug 535043 - Support maxlength on textarea. r=smaug, sr=jst

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This commit is contained in:
Aryeh Gregor 2010-01-18 16:53:59 +01:00
parent 7fcd25c7bf
commit 86317086bb
4 changed files with 94 additions and 1 deletions
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4
content/html/content/src/nsHTMLTextAreaElement.cpp
View File

@ -373,6 +373,7 @@ nsHTMLTextAreaElement::IsHTMLFocusable(PRBool *aIsFocusable, PRInt32 *aTabIndex)
NS_IMPL_STRING_ATTR(nsHTMLTextAreaElement, AccessKey, accesskey)
NS_IMPL_INT_ATTR(nsHTMLTextAreaElement, Cols, cols)
NS_IMPL_BOOL_ATTR(nsHTMLTextAreaElement, Disabled, disabled)
NS_IMPL_INT_ATTR(nsHTMLTextAreaElement, MaxLength, maxlength)
NS_IMPL_STRING_ATTR(nsHTMLTextAreaElement, Name, name)
NS_IMPL_BOOL_ATTR(nsHTMLTextAreaElement, ReadOnly, readonly)
NS_IMPL_INT_ATTR(nsHTMLTextAreaElement, Rows, rows)
@ -523,6 +524,9 @@ nsHTMLTextAreaElement::ParseAttribute(PRInt32 aNamespaceID,
nsAttrValue& aResult)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::maxlength) {
return aResult.ParseIntWithBounds(aValue, 0);
}
if (aAttribute == nsGkAtoms::cols) {
return aResult.ParseIntWithBounds(aValue, 0);
}

1
content/html/content/test/Makefile.in
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@ -144,6 +144,7 @@ _TEST_FILES = test_bug589.html \
form_submit_server.sjs \
test_bug529819.html \
test_bug529859.html \
test_bug535043.html \
$(NULL)
libs:: $(_TEST_FILES)

87
content/html/content/test/test_bug535043.html Normal file
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@ -0,0 +1,87 @@
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=535043
-->
<head>
<title>Test for Bug 535043</title>
<script type="text/javascript" src="/MochiKit/packed.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" 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=535043">Mozilla Bug 535043</a>
<p id="display"></p>
<div id="content">
<textarea></textarea>
<textarea maxlength="-1"></textarea>
<textarea maxlength="0"></textarea>
<textarea maxlength="2"></textarea>
<textarea maxlength="257"></textarea>
</div>
<pre id="test">
<script type="text/javascript">
/** Test for Bug 535043 **/
function checkTextArea(textArea) {
textArea.value = '';
textArea.focus();
for (var j = 0; j < 259; j++) {
synthesizeKey('x', {});
}
var htmlMaxLength = textArea.getAttribute('maxlength');
var domMaxLength = textArea.maxLength;
if (htmlMaxLength == null) {
is(domMaxLength, -1,
'maxlength is unset but maxLength DOM attribute is not -1');
} else if (htmlMaxLength < 0) {
// Per the HTML5 spec, out-of-range values are supposed to translate to -1,
// not 0, but they don't?
todo_is(domMaxLength, -1,
'maxlength is out of range but maxLength DOM attribute is not -1');
} else {
is(domMaxLength, parseInt(htmlMaxLength),
'maxlength in DOM does not match provided value');
}
if (textArea.maxLength == -1) {
is(textArea.value.length, 259,
'textarea with maxLength -1 should have no length limit');
} else {
is(textArea.value.length, textArea.maxLength, 'textarea has maxLength ' +
textArea.maxLength + ' but length ' + textArea.value.length );
}
}
SimpleTest.waitForFocus(function() {
var textAreas = document.getElementsByTagName('textarea');
for (var i = 0; i < textAreas.length; i++) {
checkTextArea(textAreas[i]);
}
textArea = textAreas[0];
testNums = [-42, -1, 0, 2, 257];
for (var i = 0; i < testNums.length; i++) {
textArea.removeAttribute('maxlength');
var caught = false;
try {
textArea.maxLength = testNums[i];
} catch (e) {
caught = true;
}
if (testNums[i] < 0) {
todo(caught, 'Setting negative maxLength should throw exception');
} else {
ok(!caught, 'Setting nonnegative maxLength should not throw exception');
}
checkTextArea(textArea);
textArea.setAttribute('maxlength', testNums[i]);
checkTextArea(textArea);
}
});
</script>
</pre>
</body>
</html>

3
dom/interfaces/html/nsIDOMNSHTMLTextAreaElement.idl
View File

@ -42,7 +42,7 @@
interface nsIControllers;
[scriptable, uuid(ca066b44-9ddf-11d3-bccc-0060b0fc76bd)]
[scriptable, uuid(7a5e4bfb-0530-4c35-a7f9-7859b472ef8d)]
interface nsIDOMNSHTMLTextAreaElement : nsISupports
{
readonly attribute nsIControllers controllers;
@ -50,6 +50,7 @@ interface nsIDOMNSHTMLTextAreaElement : nsISupports
readonly attribute long textLength;
attribute long selectionStart;
attribute long selectionEnd;
attribute long maxLength;
void setSelectionRange(in long selectionStart,
in long selectionEnd);