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<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<title>Test for computation of CSS 'initial' on all properties and 'unset' on reset properties</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="property_database.js"></script>
<style type="text/css" id="stylesheet"></style>
<style type="text/css">
/* For 'width', 'height', etc., need a constant size container. */
#display { width: 500px; height: 200px }
</style>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<script type="text/javascript">
SimpleTest.waitForExplicitFinish();
var load_count = 0;
function load_done() {
if (++load_count == 3)
run_tests();
}
</script>
</head>
<body>
<p id="display"><span><span id="elementf"></span></span>
<iframe id="unstyledn" src="unstyled.xml" height="10" width="10" onload="load_done()"></iframe>
<iframe id="unstyledf" src="unstyled-frame.xml" height="10" width="10" onload="load_done()"></iframe>
</p>
<div id="content" style="display: none">
<div><span id="elementn"></span></div>
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
/**
* Test for computation of CSS 'initial' on all properties and 'unset' on
* reset properties
*/
var gBrokenInitial = {
};
function xfail_initial(property) {
return property in gBrokenInitial;
}
var gDisplayTree = document.getElementById("display");
var gElementN = document.getElementById("elementn");
var gElementF = document.getElementById("elementf");
var gStyleSheet = document.getElementById("stylesheet").sheet;
var gRule1 = gStyleSheet.cssRules[gStyleSheet.insertRule("#elementn, #elementf {}", gStyleSheet.cssRules.length)];
var gRule2 = gStyleSheet.cssRules[gStyleSheet.insertRule("#elementn, #elementf {}", gStyleSheet.cssRules.length)];
var gInitialValuesN;
var gInitialValuesF;
var gInitialPrereqsRuleN;
var gInitialPrereqsRuleF;
function setup_initial_values(id, ivalprop, prereqprop) {
var iframe = document.getElementById(id);
window[ivalprop] = iframe.contentWindow.getComputedStyle(
iframe.contentDocument.documentElement.firstChild);
var sheet = iframe.contentDocument.styleSheets[0];
// For 'width', 'height', etc., need a constant size container.
sheet.insertRule(":root { height: 200px; width: 500px }", sheet.cssRules.length);
window[prereqprop] = sheet.cssRules[sheet.insertRule(":root > * {}", sheet.cssRules.length)];
}
function test_property(property)
{
var info = gCSSProperties[property];
var keywords = ["initial"];
if (!info.inherited)
keywords.push("unset");
keywords.forEach(function(keyword) {
if ("prerequisites" in info) {
var prereqs = info.prerequisites;
for (var prereq in prereqs) {
gRule1.style.setProperty(prereq, prereqs[prereq], "");
gInitialPrereqsRuleN.style.setProperty(prereq, prereqs[prereq], "");
gInitialPrereqsRuleF.style.setProperty(prereq, prereqs[prereq], "");
}
}
if (info.inherited) {
gElementN.parentNode.style.setProperty(property, info.other_values[0], "");
gElementF.parentNode.style.setProperty(property, info.other_values[0], "");
}
var initial_computed_n = get_computed_value(gInitialValuesN, property);
var initial_computed_f = get_computed_value(gInitialValuesF, property);
gRule1.style.setProperty(property, info.other_values[0], "");
var other_computed_n = get_computed_value(getComputedStyle(gElementN, ""), property);
var other_computed_f = get_computed_value(getComputedStyle(gElementF, ""), property);
isnot(other_computed_n, initial_computed_n,
"should be testing with values that compute to different things " +
"for '" + property + "'");
isnot(other_computed_f, initial_computed_f,
"should be testing with values that compute to different things " +
"for '" + property + "'");
// It used to be important for values that are supposed to compute to the
// initial value (given the design of the old rule tree, nsRuleNode) that
// we're modifying the most specific rule that matches the element, and
// that we've already requested style while that rule was empty. This
// means we'd have a cached aStartStruct from the parent in the rule
// tree (caching the "other" value), so we'd make sure we don't get the
// initial value from the luck of default-initialization. This means
// that it would've been important that we set the prereqs on
// gRule1.style rather than on gElement.style.
//
// However, the rule tree no longer stores cached structs, and we only
// temporarily cache reset structs during a single restyle. So the
// particular failure mode this was designed to test for isn't as
// likely to eventuate.
gRule2.style.setProperty(property, keyword, "");
var initial_val_computed_n = get_computed_value(getComputedStyle(gElementN, ""), property);
var initial_val_computed_f = get_computed_value(getComputedStyle(gElementF, ""), property);
(xfail_initial(property) ? todo_is : is)(
initial_val_computed_n, initial_computed_n,
keyword + " should cause initial value for '" + property + "'");
(xfail_initial(property) ? todo_is : is)(
initial_val_computed_f, initial_computed_f,
keyword + " should cause initial value for '" + property + "'");
gRule1.style.removeProperty(property);
gRule2.style.removeProperty(property);
if ("prerequisites" in info) {
var prereqs = info.prerequisites;
for (var prereq in prereqs) {
gRule1.style.removeProperty(prereq);
gInitialPrereqsRuleN.style.removeProperty(prereq);
gInitialPrereqsRuleF.style.removeProperty(prereq);
}
}
if (info.inherited) {
gElementN.parentNode.style.removeProperty(property);
gElementF.parentNode.style.removeProperty(property);
}
});
}
function run_tests() {
setup_initial_values("unstyledn", "gInitialValuesN", "gInitialPrereqsRuleN");
setup_initial_values("unstyledf", "gInitialValuesF", "gInitialPrereqsRuleF");
for (var prop in gCSSProperties)
test_property(prop);
SimpleTest.finish();
}
load_done();
</script>
</pre>
</body>
</html>
|
