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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) | 3 * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) |
4 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com) | 4 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com) |
5 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved. | 5 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved. |
6 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> | 6 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> |
7 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org> | 7 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org> |
8 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.t orchmobile.com/) | 8 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.t orchmobile.com/) |
9 * Copyright (c) 2011, Code Aurora Forum. All rights reserved. | 9 * Copyright (c) 2011, Code Aurora Forum. All rights reserved. |
10 * Copyright (C) Research In Motion Limited 2011. All rights reserved. | 10 * Copyright (C) Research In Motion Limited 2011. All rights reserved. |
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560 } | 560 } |
561 | 561 |
562 // Now check SMIL animation override style. | 562 // Now check SMIL animation override style. |
563 if (includeSMILProperties && matchAuthorAndUserStyles && m_state.styledEleme nt() && m_state.styledElement()->isSVGElement()) | 563 if (includeSMILProperties && matchAuthorAndUserStyles && m_state.styledEleme nt() && m_state.styledElement()->isSVGElement()) |
564 collector.addElementStyleProperties(toSVGElement(m_state.styledElement() )->animatedSMILStyleProperties(), false /* isCacheable */); | 564 collector.addElementStyleProperties(toSVGElement(m_state.styledElement() )->animatedSMILStyleProperties(), false /* isCacheable */); |
565 | 565 |
566 if (m_state.styledElement() && m_state.styledElement()->hasActiveAnimations( )) | 566 if (m_state.styledElement() && m_state.styledElement()->hasActiveAnimations( )) |
567 collector.matchedResult().isCacheable = false; | 567 collector.matchedResult().isCacheable = false; |
568 } | 568 } |
569 | 569 |
570 inline void StyleResolver::initElement(Element* e) | 570 inline void StyleResolver::initElement(Element* e, int childIndex) |
571 { | 571 { |
572 if (m_state.element() != e) { | 572 if (m_state.element() != e) { |
573 m_state.initElement(e); | 573 m_state.initElement(e, childIndex); |
574 if (e && e == e->document()->documentElement()) { | 574 if (e && e == e->document()->documentElement()) { |
575 e->document()->setDirectionSetOnDocumentElement(false); | 575 e->document()->setDirectionSetOnDocumentElement(false); |
576 e->document()->setWritingModeSetOnDocumentElement(false); | 576 e->document()->setWritingModeSetOnDocumentElement(false); |
577 } | 577 } |
578 } | 578 } |
579 } | 579 } |
580 | 580 |
581 static const unsigned cStyleSearchThreshold = 10; | 581 static const unsigned cStyleSearchThreshold = 10; |
582 static const unsigned cStyleSearchLevelThreshold = 10; | 582 static const unsigned cStyleSearchLevelThreshold = 10; |
583 | 583 |
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600 if (p->inlineStyle()) | 600 if (p->inlineStyle()) |
601 return 0; | 601 return 0; |
602 if (p->isSVGElement() && toSVGElement(p)->animatedSMILStyleProperties()) | 602 if (p->isSVGElement() && toSVGElement(p)->animatedSMILStyleProperties()) |
603 return 0; | 603 return 0; |
604 if (p->hasID() && m_features.idsInRules.contains(p->idForStyleResolution().i mpl())) | 604 if (p->hasID() && m_features.idsInRules.contains(p->idForStyleResolution().i mpl())) |
605 return 0; | 605 return 0; |
606 | 606 |
607 RenderStyle* parentStyle = p->renderStyle(); | 607 RenderStyle* parentStyle = p->renderStyle(); |
608 unsigned subcount = 0; | 608 unsigned subcount = 0; |
609 Node* thisCousin = p; | 609 Node* thisCousin = p; |
610 Node* currentNode = p->previousSibling(); | 610 Node* currentNode = p->nextSibling(); |
611 | 611 |
612 // Reserve the tries for this level. This effectively makes sure that the al gorithm | 612 // Reserve the tries for this level. This effectively makes sure that the al gorithm |
613 // will never go deeper than cStyleSearchLevelThreshold levels into recursio n. | 613 // will never go deeper than cStyleSearchLevelThreshold levels into recursio n. |
614 visitedNodeCount += cStyleSearchThreshold; | 614 visitedNodeCount += cStyleSearchThreshold; |
615 static int iterationCount = 0; | |
ojan
2013/06/03 23:03:29
Leftover debugging code?
| |
615 while (thisCousin) { | 616 while (thisCousin) { |
616 while (currentNode) { | 617 while (currentNode) { |
617 ++subcount; | 618 ++subcount; |
618 if (!currentNode->hasScopedHTMLStyleChild() && currentNode->renderSt yle() == parentStyle && currentNode->lastChild() | 619 if (!currentNode->hasScopedHTMLStyleChild() && currentNode->renderSt yle() == parentStyle && currentNode->lastChild() |
619 && currentNode->isElementNode() && !parentElementPreventsSharing (toElement(currentNode)) | 620 && currentNode->isElementNode() && !parentElementPreventsSharing (toElement(currentNode)) |
620 && !toElement(currentNode)->shadow() | 621 && !toElement(currentNode)->shadow() |
621 ) { | 622 ) { |
622 // Adjust for unused reserved tries. | 623 // Adjust for unused reserved tries. |
623 visitedNodeCount -= cStyleSearchThreshold - subcount; | 624 visitedNodeCount -= cStyleSearchThreshold - subcount; |
624 return currentNode->lastChild(); | 625 return currentNode->lastChild(); |
625 } | 626 } |
626 if (subcount >= cStyleSearchThreshold) | 627 if (subcount >= cStyleSearchThreshold) |
627 return 0; | 628 return 0; |
628 currentNode = currentNode->previousSibling(); | 629 currentNode = currentNode->nextSibling(); |
629 } | 630 } |
630 currentNode = locateCousinList(thisCousin->parentElement(), visitedNodeC ount); | 631 currentNode = locateCousinList(thisCousin->parentElement(), visitedNodeC ount); |
631 thisCousin = currentNode; | 632 thisCousin = currentNode; |
632 } | 633 } |
633 | 634 |
634 return 0; | 635 return 0; |
635 } | 636 } |
636 | 637 |
637 bool StyleResolver::styleSharingCandidateMatchesRuleSet(RuleSet* ruleSet) | 638 bool StyleResolver::styleSharingCandidateMatchesRuleSet(RuleSet* ruleSet) |
638 { | 639 { |
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814 if (element->isWebVTTElement() && state.element()->isWebVTTElement() && toWe bVTTElement(element)->isPastNode() != toWebVTTElement(state.element())->isPastNo de()) | 815 if (element->isWebVTTElement() && state.element()->isWebVTTElement() && toWe bVTTElement(element)->isPastNode() != toWebVTTElement(state.element())->isPastNo de()) |
815 return false; | 816 return false; |
816 | 817 |
817 if (element == element->document()->webkitCurrentFullScreenElement() || stat e.element() == state.document()->webkitCurrentFullScreenElement()) | 818 if (element == element->document()->webkitCurrentFullScreenElement() || stat e.element() == state.document()->webkitCurrentFullScreenElement()) |
818 return false; | 819 return false; |
819 return true; | 820 return true; |
820 } | 821 } |
821 | 822 |
822 inline StyledElement* StyleResolver::findSiblingForStyleSharing(Node* node, unsi gned& count) const | 823 inline StyledElement* StyleResolver::findSiblingForStyleSharing(Node* node, unsi gned& count) const |
823 { | 824 { |
824 for (; node; node = node->previousSibling()) { | 825 for (; node; node = node->nextSibling()) { |
825 if (!node->isStyledElement()) | 826 if (!node->isStyledElement()) |
826 continue; | 827 continue; |
827 if (canShareStyleWithElement(static_cast<StyledElement*>(node))) | 828 if (canShareStyleWithElement(static_cast<StyledElement*>(node))) |
828 break; | 829 break; |
829 if (count++ == cStyleSearchThreshold) | 830 if (count++ == cStyleSearchThreshold) |
830 return 0; | 831 return 0; |
831 } | 832 } |
832 return static_cast<StyledElement*>(node); | 833 return static_cast<StyledElement*>(node); |
833 } | 834 } |
834 | 835 |
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854 return 0; | 855 return 0; |
855 if (elementHasDirectionAuto(state.element())) | 856 if (elementHasDirectionAuto(state.element())) |
856 return 0; | 857 return 0; |
857 if (state.element()->hasActiveAnimations()) | 858 if (state.element()->hasActiveAnimations()) |
858 return 0; | 859 return 0; |
859 | 860 |
860 // Cache whether state.element is affected by any known class selectors. | 861 // Cache whether state.element is affected by any known class selectors. |
861 // FIXME: This shouldn't be a member variable. The style sharing code could be factored out of StyleResolver. | 862 // FIXME: This shouldn't be a member variable. The style sharing code could be factored out of StyleResolver. |
862 state.setElementAffectedByClassRules(state.element() && state.element()->has Class() && classNamesAffectedByRules(state.element()->classNames())); | 863 state.setElementAffectedByClassRules(state.element() && state.element()->has Class() && classNamesAffectedByRules(state.element()->classNames())); |
863 | 864 |
864 // Check previous siblings and their cousins. | 865 // Check next siblings and their cousins. |
865 unsigned count = 0; | 866 unsigned count = 0; |
866 unsigned visitedNodeCount = 0; | 867 unsigned visitedNodeCount = 0; |
867 StyledElement* shareElement = 0; | 868 StyledElement* shareElement = 0; |
868 Node* cousinList = state.styledElement()->previousSibling(); | 869 Node* cousinList = state.styledElement()->nextSibling(); |
869 while (cousinList) { | 870 while (cousinList) { |
870 shareElement = findSiblingForStyleSharing(cousinList, count); | 871 shareElement = findSiblingForStyleSharing(cousinList, count); |
871 if (shareElement) | 872 if (shareElement) |
872 break; | 873 break; |
873 cousinList = locateCousinList(cousinList->parentElement(), visitedNodeCo unt); | 874 cousinList = locateCousinList(cousinList->parentElement(), visitedNodeCo unt); |
874 } | 875 } |
875 | 876 |
876 // If we have exhausted all our budget or our cousins. | 877 // If we have exhausted all our budget or our cousins. |
877 if (!shareElement) | 878 if (!shareElement) |
878 return 0; | 879 return 0; |
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1073 } | 1074 } |
1074 | 1075 |
1075 static inline bool isAtShadowBoundary(const Element* element) | 1076 static inline bool isAtShadowBoundary(const Element* element) |
1076 { | 1077 { |
1077 if (!element) | 1078 if (!element) |
1078 return false; | 1079 return false; |
1079 ContainerNode* parentNode = element->parentNode(); | 1080 ContainerNode* parentNode = element->parentNode(); |
1080 return parentNode && parentNode->isShadowRoot(); | 1081 return parentNode && parentNode->isShadowRoot(); |
1081 } | 1082 } |
1082 | 1083 |
1083 PassRefPtr<RenderStyle> StyleResolver::styleForElement(Element* element, RenderS tyle* defaultParent, | 1084 PassRefPtr<RenderStyle> StyleResolver::styleForElement(Element* element, RenderS tyle* defaultParent, StyleSharingBehavior sharingBehavior, |
1084 StyleSharingBehavior sharingBehavior, RuleMatchingBehavior matchingBehavior, RenderRegion* regionForStyling) | 1085 RuleMatchingBehavior matchingBehavior, RenderRegion* regionForStyling, int c hildIndex) |
1085 { | 1086 { |
1086 // Once an element has a renderer, we don't try to destroy it, since otherwi se the renderer | 1087 // Once an element has a renderer, we don't try to destroy it, since otherwi se the renderer |
1087 // will vanish if a style recalc happens during loading. | 1088 // will vanish if a style recalc happens during loading. |
1088 if (sharingBehavior == AllowStyleSharing && !element->document()->haveStyles heetsLoaded() && !element->renderer()) { | 1089 if (sharingBehavior == AllowStyleSharing && !element->document()->haveStyles heetsLoaded() && !element->renderer()) { |
1089 if (!s_styleNotYetAvailable) { | 1090 if (!s_styleNotYetAvailable) { |
1090 s_styleNotYetAvailable = RenderStyle::create().leakRef(); | 1091 s_styleNotYetAvailable = RenderStyle::create().leakRef(); |
1091 s_styleNotYetAvailable->setDisplay(NONE); | 1092 s_styleNotYetAvailable->setDisplay(NONE); |
1092 s_styleNotYetAvailable->font().update(m_fontSelector); | 1093 s_styleNotYetAvailable->font().update(m_fontSelector); |
1093 } | 1094 } |
1094 element->document()->setHasNodesWithPlaceholderStyle(); | 1095 element->document()->setHasNodesWithPlaceholderStyle(); |
1095 return s_styleNotYetAvailable; | 1096 return s_styleNotYetAvailable; |
1096 } | 1097 } |
1097 | 1098 |
1098 StyleResolverState& state = m_state; | 1099 StyleResolverState& state = m_state; |
1099 initElement(element); | 1100 initElement(element, childIndex); |
1100 state.initForStyleResolve(document(), element, defaultParent, regionForStyli ng); | 1101 state.initForStyleResolve(document(), element, defaultParent, regionForStyli ng); |
1101 if (sharingBehavior == AllowStyleSharing && !state.distributedToInsertionPoi nt()) { | 1102 if (sharingBehavior == AllowStyleSharing && !state.distributedToInsertionPoi nt()) { |
1102 RenderStyle* sharedStyle = locateSharedStyle(); | 1103 RenderStyle* sharedStyle = locateSharedStyle(); |
1103 if (sharedStyle) { | 1104 if (sharedStyle) { |
1104 state.clear(); | 1105 state.clear(); |
1105 return sharedStyle; | 1106 return sharedStyle; |
1106 } | 1107 } |
1107 } | 1108 } |
1108 | 1109 |
1109 if (state.parentStyle()) { | 1110 if (state.parentStyle()) { |
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3728 info.addMember(m_state, "state"); | 3729 info.addMember(m_state, "state"); |
3729 | 3730 |
3730 // FIXME: move this to a place where it would be called only once? | 3731 // FIXME: move this to a place where it would be called only once? |
3731 info.addMember(CSSDefaultStyleSheets::defaultStyle, "defaultStyle"); | 3732 info.addMember(CSSDefaultStyleSheets::defaultStyle, "defaultStyle"); |
3732 info.addMember(CSSDefaultStyleSheets::defaultQuirksStyle, "defaultQuirksStyl e"); | 3733 info.addMember(CSSDefaultStyleSheets::defaultQuirksStyle, "defaultQuirksStyl e"); |
3733 info.addMember(CSSDefaultStyleSheets::defaultPrintStyle, "defaultPrintStyle" ); | 3734 info.addMember(CSSDefaultStyleSheets::defaultPrintStyle, "defaultPrintStyle" ); |
3734 info.addMember(CSSDefaultStyleSheets::defaultViewSourceStyle, "defaultViewSo urceStyle"); | 3735 info.addMember(CSSDefaultStyleSheets::defaultViewSourceStyle, "defaultViewSo urceStyle"); |
3735 } | 3736 } |
3736 | 3737 |
3737 } // namespace WebCore | 3738 } // namespace WebCore |
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