95517 2012-08-30 17:24:25 -0700 ASSERTion failure when SVG element is removed from document and readded 2012-09-04 11:31:14 -0700 1 1 1 Unclassified WebKit SVG 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 thorton webkit-unassigned beidson dino fmalita zimmermann oldest_to_newest 709188 0 thorton 2012-08-30 17:24:25 -0700 See attached test case: if you have an <svg> element in an HTML page, then remove it and add it again, we assert: ASSERTION FAILED: !m_beginTime /Volumes/SSD/src/WebKit/OpenSource/Source/WebCore/svg/animation/SMILTimeContainer.cpp(91) : void WebCore::SMILTimeContainer::begin() 1 0x103e43962 WebCore::SMILTimeContainer::begin() 2 0x104082648 WebCore::SVGSVGElement::insertedInto(WebCore::ContainerNode*) 3 0x102b04494 WebCore::ChildNodeInsertionNotifier::notifyNodeInsertedIntoDocument(WebCore::Node*) 4 0x102b00c25 WebCore::ChildNodeInsertionNotifier::notify(WebCore::Node*) 5 0x102afd69a WebCore::updateTreeAfterInsertion(WebCore::ContainerNode*, WebCore::Node*, bool) 6 0x102afd0cd WebCore::ContainerNode::appendChild(WTF::PassRefPtr<WebCore::Node>, int&, bool) 7 0x1039be15a WebCore::Node::appendChild(WTF::PassRefPtr<WebCore::Node>, int&, bool) This is because m_beginTime wasn't cleared when the element was removed, so it's still set from this element's previous call to begin(). I have a patch, however, I wonder what behavior is expected? Should animations continue from where they were, or should they restart from the beginning when the <svg> is added to the document? <rdar://problem/12175583> 709189 1 161595 thorton 2012-08-30 17:27:19 -0700 Created attachment 161595 repro 709195 2 thorton 2012-08-30 17:36:27 -0700 The SVG Animation spec says that the timeline is relative to "document begin", which is "the exact time at which the svg element's SVGLoad event is triggered", which only happens once, so I guess we can't just reset the time container. 709196 3 dino 2012-08-30 17:38:30 -0700 (In reply to comment #0) > I have a patch, however, I wonder what behavior is expected? Should animations continue from where they were, or should they restart from the beginning when the <svg> is added to the document? Seems like this is undefined in the spec. I vote for restarting. 710017 4 thorton 2012-08-31 14:58:58 -0700 Re-reading the spec, it's pretty clear that they're not supposed to restart (that the TimeContainer starts when SVGLoad happens and therefore cannot be reset), so maybe the assertion is just bogus. Let's see if any tests are depending on this behavior. 710043 5 thorton 2012-08-31 15:55:37 -0700 (In reply to comment #4) > Re-reading the spec, it's pretty clear that they're not supposed to restart (that the TimeContainer starts when SVGLoad happens and therefore cannot be reset), so maybe the assertion is just bogus. Let's see if any tests are depending on this behavior. Firefox and Opera agree with ^^ (and do not restart the animation). However, our current behavior is actually *more* broken -- the animation doesn't resume when the <svg> is readded. 710046 6 thorton 2012-08-31 15:59:56 -0700 (In reply to comment #5) > (In reply to comment #4) > > Re-reading the spec, it's pretty clear that they're not supposed to restart (that the TimeContainer starts when SVGLoad happens and therefore cannot be reset), so maybe the assertion is just bogus. Let's see if any tests are depending on this behavior. > > Firefox and Opera agree with ^^ (and do not restart the animation). They also don't pause the animation while the <svg> is out-of-document, so that's kind of odd... (it jumps when it gets readded) 710099 7 161799 thorton 2012-08-31 17:40:57 -0700 Created attachment 161799 patch 711280 8 thorton 2012-09-04 11:31:14 -0700 http://trac.webkit.org/changeset/127474 161595 2012-08-30 17:27:19 -0700 2012-08-30 17:27:19 -0700 repro svgtest.html text/html 304 thorton PGh0bWw+CjxzY3JpcHQ+Cgp3aW5kb3cub25sb2FkID0gZnVuY3Rpb24gKCkgewogICAgc2V0VGlt ZW91dChmdW5jdGlvbiAoKSB7CiAgICAJdmFyIHN2ZyA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlk KCJzdmciKTsKICAgIAlkb2N1bWVudC5ib2R5LnJlbW92ZUNoaWxkKHN2Zyk7CiAgICAJZG9jdW1l bnQuYm9keS5hcHBlbmRDaGlsZChzdmcpOwogICAgfSwgMCk7Cn0KCjwvc2NyaXB0Pgo8Ym9keT4K ICAgIDxzdmcgaWQ9InN2ZyIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48L3N2 Zz4KPC9ib2R5Pgo8L2h0bWw+Cg== 161799 2012-08-31 17:40:57 -0700 2012-08-31 18:16:52 -0700 patch bradee.diff text/plain 6813 thorton ZGlmZiAtLWdpdCBhL0xheW91dFRlc3RzL0NoYW5nZUxvZyBiL0xheW91dFRlc3RzL0NoYW5nZUxv ZwppbmRleCBlNzE3YWJjLi5lYWE4NGEwIDEwMDY0NAotLS0gYS9MYXlvdXRUZXN0cy9DaGFuZ2VM 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