<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<script src="../../../resources/js-test.js"></script>
</head>
<body>
<p id="description"></p>
<div id="console"></div>
<script>
description("This test checks that textareas have the right metrics. These numbers match IE7 except for scrollHeight. For two reasons:<br>" +
"1. scrollHeight is different for elements without enough content to cause scroll because IE7 then reports the height of the text inside the " +
"element as the scrollHeight. IE8 reports has scrollHeight == offsetHeight. Gecko/WebKit have scrollHeight == clientHeight.<br>" +
"2. For the elements with scroll in standards-mode, IE wraps the text differently. It seems to leave 2px less space for the text. We don't " +
"currently mimic this quirk. It's not clear whether we should given that we agree with IE7's clientWidth numbers in all these cases.");
function assertTextareaMetrics(doc, properties, expectedMetrics) {
var textarea = doc.createElement('textarea');
// Give some consistent CSS for consistent rendering across platforms
// and to help in reasoning when trying to match IE metrics.
var style = 'overflow-y:auto; font-family:Ahem; line-height:20px; height:50px; width:50px;';
var title = '';
for (property in properties) {
var value = properties[property];
title += ' ' + property + ': "' + value + '",';
if (property == 'style')
style += value;
else
textarea[property] = value;
}
textarea.style.cssText = style;
doc.body.appendChild(textarea);
// Create a more human-readable ID.
var id = title.replace(/[\'\",;\:]/g, ' ').replace(/ +/g, '-');
id = id == '' ? 'no-styles' : id;
textarea.id = id;
window[doc.compatMode + 'doc'] = doc;
function assertMetricsForTextarea() {
if (!title)
title = ' none';
debug('Properties =' + title);
shouldBe(doc.compatMode + "doc.getElementById('" + id + "').clientWidth", String(expectedMetrics.clientWidth));
shouldBe(doc.compatMode + "doc.getElementById('" + id + "').clientHeight", String(expectedMetrics.clientHeight));
shouldBe(doc.compatMode + "doc.getElementById('" + id + "').offsetWidth", String(expectedMetrics.offsetWidth));
shouldBe(doc.compatMode + "doc.getElementById('" + id + "').offsetHeight", String(expectedMetrics.offsetHeight));
shouldBe(doc.compatMode + "doc.getElementById('" + id + "').scrollWidth", String(expectedMetrics.scrollWidth));
shouldBe(doc.compatMode + "doc.getElementById('" + id + "').scrollHeight", String(expectedMetrics.scrollHeight));
debug('');
}
if (document.all)
// Give a timeout so IE has time to figure out it's metrics.
setTimeout(assertMetricsForTextarea, 100);
else
assertMetricsForTextarea();
}
var smallHTML = 'A';
var htmlThatCausesScroll = 'AAAAAAAAA';
function testTextareasForDocument(doc, compatMode,
textareaSizes, textareaWithScrollSizes,
textareaWith8pxPaddingSizes, textareaWith8pxPaddingAndScrollbarSizes) {
if (doc.compatMode != compatMode)
testFailed('This doc should be in ' + compatMode + ' mode.');
try {
var scrollbarStyle = doc.createElement('style');
scrollbarStyle.innerText = 'textarea::-webkit-scrollbar{ width:17px }';
doc.getElementsByTagName('head')[0].appendChild(scrollbarStyle);
} catch (e) {
// IE throws an exception here, but doesn't need the above clause anyways.
}
debug('Testing ' + compatMode + ' document.')
assertTextareaMetrics(doc, {}, textareaSizes);
assertTextareaMetrics(doc, {disabled: true}, textareaSizes);
assertTextareaMetrics(doc, {innerHTML: smallHTML}, textareaSizes);
assertTextareaMetrics(doc, {innerHTML: htmlThatCausesScroll}, textareaWithScrollSizes);
assertTextareaMetrics(doc, {innerHTML: smallHTML, disabled: true}, textareaSizes);
assertTextareaMetrics(doc, {innerHTML: htmlThatCausesScroll, disabled: true}, textareaWithScrollSizes);
assertTextareaMetrics(doc, {innerHTML: smallHTML, style: 'padding:8px'}, textareaWith8pxPaddingSizes);
assertTextareaMetrics(doc, {innerHTML: htmlThatCausesScroll, style: 'padding:8px'}, textareaWith8pxPaddingAndScrollbarSizes);
assertTextareaMetrics(doc, {innerHTML: smallHTML, rows: 10}, textareaSizes);
assertTextareaMetrics(doc, {innerHTML: htmlThatCausesScroll, rows: 10}, textareaWithScrollSizes);
}
// For textareas with scrollbars have the expected clientWidth be the
// expected offsetWidth - scrollbarPlusBorderWidth.
// default border on textareas is 1px solid. So, the border width is 2.
// And the scrollbarWidth we set to be 17 to match windows so that
// these numbers will be platform independent and match IE.
var scrollbarPlusBorderWidth = 19;
var textareaSizesQuirks = {clientWidth: 48,
clientHeight: 48,
offsetWidth: 50,
offsetHeight: 50,
scrollWidth: 48,
scrollHeight: 48};
var textareaWithScrollSizesQuirks = {clientWidth: 50 - scrollbarPlusBorderWidth,
clientHeight: 48,
offsetWidth: 50,
offsetHeight: 50,
scrollWidth: 50 - scrollbarPlusBorderWidth,
scrollHeight: 104};
var textareaWith8pxPaddingSizesQuirks = {clientWidth: 48,
clientHeight: 48,
offsetWidth: 50,
offsetHeight: 50,
scrollWidth: 48,
scrollHeight: 48};
var textareaWith8pxPaddingAndScrollbarSizesQuirks = {clientWidth: 50 - scrollbarPlusBorderWidth,
clientHeight: 48,
offsetWidth: 50,
offsetHeight: 50,
scrollWidth: 50 - scrollbarPlusBorderWidth,
scrollHeight: 196};
testTextareasForDocument(document, 'BackCompat',
textareaSizesQuirks, textareaWithScrollSizesQuirks,
textareaWith8pxPaddingSizesQuirks, textareaWith8pxPaddingAndScrollbarSizesQuirks);
var standardsIframe = document.createElement('iframe');
standardsIframe.style.width = '100%';
document.body.appendChild(standardsIframe);
standardsIframe.contentWindow.document.write('<!DocType html><html><head></head><body></body></html>');
standardsIframe.contentWindow.document.close();
var textareaSizesStandards = {clientWidth: 54,
clientHeight: 54,
offsetWidth: 56,
offsetHeight: 56,
scrollWidth: 54,
scrollHeight: 54};
var textareaWithScrollSizesStandards = {clientWidth: 56 - scrollbarPlusBorderWidth,
clientHeight: 54,
offsetWidth: 56,
offsetHeight: 56,
scrollWidth: 56 - scrollbarPlusBorderWidth,
scrollHeight: 64};
var textareaWith8pxPaddingSizesStandards = {clientWidth: 66,
clientHeight: 66,
offsetWidth: 68,
offsetHeight: 68,
scrollWidth: 66,
scrollHeight: 66};
var textareaWith8pxPaddingAndScrollbarSizesStandards = {clientWidth: 68 - scrollbarPlusBorderWidth,
clientHeight: 66,
offsetWidth: 68,
offsetHeight: 68,
scrollWidth: 68 - scrollbarPlusBorderWidth,
scrollHeight: 76};
testTextareasForDocument(standardsIframe.contentWindow.document, 'CSS1Compat',
textareaSizesStandards, textareaWithScrollSizesStandards,
textareaWith8pxPaddingSizesStandards, textareaWith8pxPaddingAndScrollbarSizesStandards);
</script>
</body>
</html>
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