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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
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Roy Tam
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150858 changed files with 23884658 additions and 0 deletions
222
dom/tests/mochitest/general/test_offsets.js
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222
dom/tests/mochitest/general/test_offsets.js
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var scrollbarWidth = 17, scrollbarHeight = 17;
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function testElements(baseid, callback)
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{
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scrollbarWidth = scrollbarHeight = gcs($("scrollbox-test"), "width");
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var elements = $(baseid).getElementsByTagName("*");
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for (var t = 0; t < elements.length; t++) {
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var element = elements[t];
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testElement(element);
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}
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var nonappended = document.createElement("div");
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nonappended.id = "nonappended";
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nonappended.setAttribute("_offsetParent", "null");
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testElement(nonappended);
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checkScrolledElement($("scrollbox"), $("scrollchild"));
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var div = $("noscroll");
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div.scrollLeft = 10;
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div.scrollTop = 10;
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is(element.scrollLeft, 0, element.id + " scrollLeft after nonscroll");
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is(element.scrollTop, 0, element.id + " scrollTop after nonscroll");
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callback();
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}
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function toNearestAppunit(v)
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{
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// 60 appunits per CSS pixel; round result to the nearest appunit
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return Math.round(v*60)/60;
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}
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function isEqualAppunits(a, b, msg)
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{
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is(toNearestAppunit(a), toNearestAppunit(b), msg);
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}
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function testElement(element)
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{
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var offsetParent = element.getAttribute("_offsetParent");
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offsetParent = $(offsetParent == "null" ? null: (offsetParent ? offsetParent : "body"));
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var borderLeft = gcs(element, "borderLeftWidth");
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var borderTop = gcs(element, "borderTopWidth");
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var borderRight = gcs(element, "borderRightWidth");
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var borderBottom = gcs(element, "borderBottomWidth");
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var paddingLeft = gcs(element, "paddingLeft");
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var paddingTop = gcs(element, "paddingTop");
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var paddingRight = gcs(element, "paddingRight");
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var paddingBottom = gcs(element, "paddingBottom");
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var width = gcs(element, "width");
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var height = gcs(element, "height");
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if (element instanceof HTMLElement)
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checkOffsetState(element, -10000, -10000,
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borderLeft + paddingLeft + width + paddingRight + borderRight,
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borderTop + paddingTop + height + paddingBottom + borderBottom,
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offsetParent, element.id);
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var scrollWidth, scrollHeight, clientWidth, clientHeight;
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var doScrollCheck = true;
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if (element.id == "scrollbox") {
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var lastchild = $("lastline");
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scrollWidth = lastchild.getBoundingClientRect().width + paddingLeft + paddingRight;
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var top = element.firstChild.getBoundingClientRect().top;
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var bottom = element.lastChild.getBoundingClientRect().bottom;
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var contentsHeight = bottom - top;
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scrollHeight = contentsHeight + paddingTop + paddingBottom;
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clientWidth = paddingLeft + width + paddingRight - scrollbarWidth;
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clientHeight = paddingTop + height + paddingBottom - scrollbarHeight;
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} else {
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clientWidth = paddingLeft + width + paddingRight;
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clientHeight = paddingTop + height + paddingBottom;
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if (element.id == "overflow-visible") {
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scrollWidth = 200;
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scrollHeight = 201;
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} else if (element.scrollWidth > clientWidth ||
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element.scrollHeight > clientHeight) {
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// The element overflows. Don't check scrollWidth/scrollHeight since the
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// above calculation is not correct.
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doScrollCheck = false;
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} else {
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scrollWidth = clientWidth;
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scrollHeight = clientHeight;
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}
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}
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if (doScrollCheck) {
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if (element instanceof SVGElement)
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checkScrollState(element, 0, 0, 0, 0, element.id);
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else
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checkScrollState(element, 0, 0, scrollWidth, scrollHeight, element.id);
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}
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if (element instanceof SVGElement)
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checkClientState(element, 0, 0, 0, 0, element.id);
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else
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checkClientState(element, borderLeft, borderTop, clientWidth, clientHeight, element.id);
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var boundingrect = element.getBoundingClientRect();
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isEqualAppunits(boundingrect.width, borderLeft + paddingLeft + width + paddingRight + borderRight,
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element.id + " bounding rect width");
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isEqualAppunits(boundingrect.height, borderTop + paddingTop + height + paddingBottom + borderBottom,
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element.id + " bounding rect height");
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isEqualAppunits(boundingrect.right - boundingrect.left, boundingrect.width,
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element.id + " bounding rect right");
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isEqualAppunits(boundingrect.bottom - boundingrect.top, boundingrect.height,
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element.id + " bounding rect bottom");
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var rects = element.getClientRects();
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if (element.id == "div-displaynone" || element.id == "nonappended") {
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is(rects.length, 0, element.id + " getClientRects empty");
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}
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else {
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is(rects[0].left, boundingrect.left, element.id + " getClientRects left");
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is(rects[0].top, boundingrect.top, element.id + " getClientRects top");
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is(rects[0].right, boundingrect.right, element.id + " getClientRects right");
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is(rects[0].bottom, boundingrect.bottom, element.id + " getClientRects bottom");
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}
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}
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function checkScrolledElement(element, child)
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{
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var elemrect = element.getBoundingClientRect();
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var childrect = child.getBoundingClientRect();
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var topdiff = childrect.top - elemrect.top;
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element.scrollTop = 20;
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is(element.scrollLeft, 0, element.id + " scrollLeft after vertical scroll");
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is(element.scrollTop, 20, element.id + " scrollTop after vertical scroll");
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// If the viewport has been transformed, then we might have scrolled to a subpixel value
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// that's slightly different from what we requested. After rounding, however, it should
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// be the same.
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is(Math.round(childrect.top - child.getBoundingClientRect().top), 20, "child position after vertical scroll");
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element.scrollTop = 0;
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is(element.scrollLeft, 0, element.id + " scrollLeft after vertical scroll reset");
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is(element.scrollTop, 0, element.id + " scrollTop after vertical scroll reset");
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// Scrolling back to the top should work precisely.
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is(child.getBoundingClientRect().top, childrect.top, "child position after vertical scroll reset");
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element.scrollTop = 10;
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element.scrollTop = -30;
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is(element.scrollLeft, 0, element.id + " scrollLeft after vertical scroll negative");
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is(element.scrollTop, 0, element.id + " scrollTop after vertical scroll negative");
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is(child.getBoundingClientRect().top, childrect.top, "child position after vertical scroll negative");
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element.scrollLeft = 18;
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is(element.scrollLeft, 18, element.id + " scrollLeft after horizontal scroll");
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is(element.scrollTop, 0, element.id + " scrollTop after horizontal scroll");
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is(Math.round(childrect.left - child.getBoundingClientRect().left), 18, "child position after horizontal scroll");
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element.scrollLeft = -30;
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is(element.scrollLeft, 0, element.id + " scrollLeft after horizontal scroll reset");
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is(element.scrollTop, 0, element.id + " scrollTop after horizontal scroll reset");
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is(child.getBoundingClientRect().left, childrect.left, "child position after horizontal scroll reset");
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}
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function checkOffsetState(element, left, top, width, height, parent, testname)
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{
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checkCoords(element, "offset", left, top, width, height, testname);
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is(element.offsetParent, parent, testname + " offsetParent");
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}
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function checkScrollState(element, left, top, width, height, testname)
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{
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checkCoords(element, "scroll", left, top, width, height, testname);
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}
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function checkClientState(element, left, top, width, height, testname)
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{
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checkCoords(element, "client", left, top, width, height, testname);
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}
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function checkCoord(element, type, val, testname)
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{
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if (val != -10000)
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is(element[type], Math.round(val), testname + " " + type);
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}
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function checkCoordFuzzy(element, type, val, fuzz, testname)
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{
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if (val != -10000)
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ok(Math.abs(element[type] - Math.round(val)) <= fuzz, testname + " " + type);
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}
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function checkCoords(element, type, left, top, width, height, testname)
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{
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checkCoord(element, type + "Left", left, testname);
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checkCoord(element, type + "Top", top, testname);
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if (type == "scroll") {
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// scrollWidth and scrollHeight can deviate by 1 pixel due to snapping.
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checkCoordFuzzy(element, type + "Width", width, 1, testname);
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checkCoordFuzzy(element, type + "Height", height, 1, testname);
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} else {
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checkCoord(element, type + "Width", width, testname);
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checkCoord(element, type + "Height", height, testname);
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}
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if (element instanceof SVGElement)
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return;
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if (element.id == "outerpopup" && !element.parentNode.open) // closed popup
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return;
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if (element.id == "div-displaynone" || element.id == "nonappended") // hidden elements
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ok(element[type + "Width"] == 0 && element[type + "Height"] == 0,
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element.id + " has zero " + type + " width and height");
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}
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function gcs(element, prop)
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{
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var propVal = (element instanceof SVGElement && (prop == "width" || prop == "height")) ?
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element.getAttribute(prop) : getComputedStyle(element, "")[prop];
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if (propVal == "auto")
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return 0;
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return parseFloat(propVal);
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}
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