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<!DOCTYPE html>
<meta charset=utf-8>
<title>cssom-view - scrollingElement</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="quirksframe"></iframe>
<iframe id="nonquirksframe"></iframe>
<div id="log"></div>
<script>
async_test(function() {
var quirksFrame = document.getElementById("quirksframe");
quirksFrame.onload = this.step_func(function() {
var quirksDoc = quirksFrame.contentDocument;
assert_equals(quirksDoc.compatMode, "BackCompat", "Should be in quirks mode.");
assert_not_equals(quirksDoc.body, null, "Should have a body element");
// Tests for quirks mode document.
assert_equals(quirksDoc.scrollingElement, quirksDoc.body,
"scrollingElement in quirks mode should default to body element.");
quirksDoc.documentElement.style.overflow = "scroll";
quirksDoc.body.style.overflow = "scroll";
assert_equals(quirksDoc.scrollingElement, null,
"scrollingElement in quirks mode should be null if overflow of body and root element isn't visible.");
quirksDoc.documentElement.style.overflow = "visible";
assert_equals(quirksDoc.scrollingElement, quirksDoc.body);
quirksDoc.documentElement.style.overflow = "scroll";
quirksDoc.body.style.overflow = "visible";
assert_equals(quirksDoc.scrollingElement, quirksDoc.body);
quirksDoc.documentElement.style.overflow = "visible";
assert_equals(quirksDoc.scrollingElement, quirksDoc.body);
quirksDoc.body.style.display = "none";
assert_equals(quirksDoc.scrollingElement, quirksDoc.body)
quirksDoc.body.style.display = "block";
assert_equals(quirksDoc.scrollingElement, quirksDoc.body);
quirksDoc.documentElement.appendChild(quirksDoc.createElement("body"));
assert_equals(quirksDoc.scrollingElement, quirksDoc.body);
assert_equals(quirksDoc.scrollingElement, quirksDoc.getElementsByTagName("body")[0]);
quirksDoc.documentElement.removeChild(quirksDoc.documentElement.lastChild);
assert_equals(quirksDoc.scrollingElement, quirksDoc.body);
quirksDoc.documentElement.removeChild(quirksDoc.body);
assert_equals(quirksDoc.scrollingElement, null);
quirksDoc.documentElement.appendChild(quirksDoc.createElementNS("foobarNS", "body"));
assert_equals(quirksDoc.scrollingElement, null);
quirksDoc.removeChild(quirksDoc.documentElement);
assert_equals(quirksDoc.scrollingElement, null);
quirksDoc.appendChild(quirksDoc.createElementNS("foobarNS", "html"));
quirksDoc.documentElement.appendChild(quirksDoc.createElement("body"));
assert_equals(quirksDoc.scrollingElement, null);
quirksDoc.removeChild(quirksDoc.documentElement);
quirksDoc.appendChild(quirksDoc.createElement("body"));
assert_equals(quirksDoc.scrollingElement, null);
});
quirksFrame.src =
URL.createObjectURL(new Blob([""], { type: "text/html" }));
}, "scrollingElement in quirks mode");
async_test(function() {
var nonQuirksFrame = document.getElementById("nonquirksframe");
nonQuirksFrame.onload = this.step_func_done(function() {
var nonQuirksDoc = nonQuirksFrame.contentDocument;
assert_equals(nonQuirksDoc.compatMode, "CSS1Compat", "Should be in standards mode.");
assert_not_equals(nonQuirksDoc.body, null, "Should have a body element");
assert_equals(nonQuirksDoc.scrollingElement, nonQuirksDoc.documentElement,
"scrollingElement in standards mode should be the document element.");
nonQuirksDoc.documentElement.style.overflow = "scroll";
nonQuirksDoc.body.style.overflow = "scroll";
assert_equals(nonQuirksDoc.scrollingElement, nonQuirksDoc.documentElement);
nonQuirksDoc.removeChild(nonQuirksDoc.documentElement);
assert_equals(nonQuirksDoc.scrollingElement, null);
nonQuirksDoc.appendChild(nonQuirksDoc.createElement("foobar"));
assert_equals(nonQuirksDoc.scrollingElement.localName, "foobar");
});
nonQuirksFrame.src =
URL.createObjectURL(new Blob(["<!doctype html>"], { type: "text/html" }));
}, "scrollingElement in no-quirks mode");
</script>
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