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| 1 // Copyright (c) 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "config.h" | |
| 6 #include "core/dom/SiblingRuleHelper.h" | |
| 7 | |
| 8 #include "core/dom/Document.h" | |
| 9 #include "core/dom/Element.h" | |
| 10 #include "core/dom/StyleEngine.h" | |
| 11 #include "core/dom/shadow/ShadowRoot.h" | |
| 12 | |
| 13 namespace WebCore { | |
| 14 | |
| 15 bool SiblingRuleHelper::isFinishedParsingChildren() | |
| 16 { | |
| 17 if (m_node->isElementNode()) | |
| 18 return toElement(m_node)->isFinishedParsingChildren(); | |
| 19 | |
| 20 return toShadowRoot(m_node)->isFinishedParsingChildren(); | |
| 21 } | |
| 22 | |
| 23 void SiblingRuleHelper::setChildrenAffectedByDirectAdjacentRules() | |
| 24 { | |
| 25 if (m_node->isElementNode()) | |
| 26 toElement(m_node)->setChildrenAffectedByDirectAdjacentRules(); | |
| 27 else | |
| 28 toShadowRoot(m_node)->setChildrenAffectedByDirectAdjacentRules(); | |
| 29 } | |
| 30 | |
| 31 void SiblingRuleHelper::setChildrenAffectedByIndirectAdjacentRules() | |
| 32 { | |
| 33 if (m_node->isElementNode()) | |
| 34 toElement(m_node)->setChildrenAffectedByIndirectAdjacentRules(); | |
| 35 else | |
| 36 toShadowRoot(m_node)->setChildrenAffectedByIndirectAdjacentRules(); | |
| 37 } | |
| 38 | |
| 39 void SiblingRuleHelper::setChildrenAffectedByForwardPositionalRules() | |
| 40 { | |
| 41 if (m_node->isElementNode()) | |
| 42 toElement(m_node)->setChildrenAffectedByForwardPositionalRules(); | |
| 43 else | |
| 44 toShadowRoot(m_node)->setChildrenAffectedByForwardPositionalRules(); | |
| 45 } | |
| 46 | |
| 47 void SiblingRuleHelper::setChildrenAffectedByBackwardPositionalRules() | |
| 48 { | |
| 49 if (m_node->isElementNode()) | |
| 50 toElement(m_node)->setChildrenAffectedByBackwardPositionalRules(); | |
| 51 else | |
| 52 toShadowRoot(m_node)->setChildrenAffectedByBackwardPositionalRules(); | |
| 53 } | |
| 54 | |
| 55 void SiblingRuleHelper::setChildrenAffectedByFirstChildRules() | |
| 56 { | |
| 57 if (m_node->isElementNode()) | |
| 58 toElement(m_node)->setChildrenAffectedByFirstChildRules(); | |
| 59 else | |
| 60 toShadowRoot(m_node)->setChildrenAffectedByFirstChildRules(); | |
| 61 } | |
| 62 | |
| 63 void SiblingRuleHelper::setChildrenAffectedByLastChildRules() | |
| 64 { | |
| 65 if (m_node->isElementNode()) | |
| 66 toElement(m_node)->setChildrenAffectedByLastChildRules(); | |
| 67 else | |
| 68 toShadowRoot(m_node)->setChildrenAffectedByLastChildRules(); | |
| 69 } | |
| 70 | |
| 71 bool SiblingRuleHelper::childrenAffectedByPositionalRules() const | |
| 72 { | |
| 73 return m_node->isElementNode() ? toElement(m_node)->childrenAffectedByPositi
onalRules() : toShadowRoot(m_node)->childrenAffectedByPositionalRules(); | |
| 74 } | |
| 75 | |
| 76 bool SiblingRuleHelper::childrenAffectedByFirstChildRules() const | |
| 77 { | |
| 78 return m_node->isElementNode() ? toElement(m_node)->childrenAffectedByFirstC
hildRules() : toShadowRoot(m_node)->childrenAffectedByFirstChildRules(); | |
| 79 } | |
| 80 | |
| 81 bool SiblingRuleHelper::childrenAffectedByLastChildRules() const | |
| 82 { | |
| 83 return m_node->isElementNode() ? toElement(m_node)->childrenAffectedByLastCh
ildRules() : toShadowRoot(m_node)->childrenAffectedByLastChildRules(); | |
| 84 } | |
| 85 | |
| 86 bool SiblingRuleHelper::childrenAffectedByDirectAdjacentRules() const | |
| 87 { | |
| 88 return m_node->isElementNode() ? toElement(m_node)->childrenAffectedByDirect
AdjacentRules() : toShadowRoot(m_node)->childrenAffectedByDirectAdjacentRules(); | |
| 89 } | |
| 90 | |
| 91 bool SiblingRuleHelper::childrenAffectedByIndirectAdjacentRules() const | |
| 92 { | |
| 93 return m_node->isElementNode() ? toElement(m_node)->childrenAffectedByIndire
ctAdjacentRules() : toShadowRoot(m_node)->childrenAffectedByIndirectAdjacentRule
s(); | |
| 94 } | |
| 95 | |
| 96 bool SiblingRuleHelper::childrenAffectedByForwardPositionalRules() const | |
| 97 { | |
| 98 return m_node->isElementNode() ? toElement(m_node)->childrenAffectedByForwar
dPositionalRules() : toShadowRoot(m_node)->childrenAffectedByForwardPositionalRu
les(); | |
| 99 } | |
| 100 | |
| 101 bool SiblingRuleHelper::childrenAffectedByBackwardPositionalRules() const | |
| 102 { | |
| 103 return m_node->isElementNode() ? toElement(m_node)->childrenAffectedByBackwa
rdPositionalRules() : toShadowRoot(m_node)->childrenAffectedByBackwardPositional
Rules(); | |
| 104 } | |
| 105 | |
| 106 void SiblingRuleHelper::checkForChildrenAdjacentRuleChanges() | |
| 107 { | |
| 108 bool hasDirectAdjacentRules = childrenAffectedByDirectAdjacentRules(); | |
| 109 bool hasIndirectAdjacentRules = childrenAffectedByIndirectAdjacentRules(); | |
| 110 | |
| 111 if (!hasDirectAdjacentRules && !hasIndirectAdjacentRules) | |
| 112 return; | |
| 113 | |
| 114 unsigned forceCheckOfNextElementCount = 0; | |
| 115 bool forceCheckOfAnyElementSibling = false; | |
| 116 Document& document = m_node->document(); | |
| 117 | |
| 118 for (Node* child = m_node->firstChild(); child; child = child->nextSibling()
) { | |
| 119 if (!child->isElementNode()) | |
| 120 continue; | |
| 121 Element* element = toElement(child); | |
| 122 bool childRulesChanged = element->needsStyleRecalc() && element->styleCh
angeType() >= SubtreeStyleChange; | |
| 123 | |
| 124 if (forceCheckOfNextElementCount || forceCheckOfAnyElementSibling) | |
| 125 element->setNeedsStyleRecalc(SubtreeStyleChange); | |
| 126 | |
| 127 if (forceCheckOfNextElementCount) | |
| 128 forceCheckOfNextElementCount--; | |
| 129 | |
| 130 if (childRulesChanged && hasDirectAdjacentRules) | |
| 131 forceCheckOfNextElementCount = document.styleEngine()->maxDirectAdja
centSelectors(); | |
| 132 | |
| 133 forceCheckOfAnyElementSibling = forceCheckOfAnyElementSibling || (childR
ulesChanged && hasIndirectAdjacentRules); | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 bool SiblingRuleHelper::childrenSupportStyleSharing() | |
| 138 { | |
| 139 return m_node->isElementNode() ? toElement(m_node)->childrenSupportStyleShar
ing() : toShadowRoot(m_node)->childrenSupportStyleSharing(); | |
| 140 } | |
| 141 | |
| 142 } // namespace WebCore | |
| 143 | |
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