| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef ElementShadow_h |
| #define ElementShadow_h |
| |
| #include "core/dom/shadow/InsertionPoint.h" |
| #include "core/dom/shadow/SelectRuleFeatureSet.h" |
| #include "core/dom/shadow/ShadowRoot.h" |
| #include "wtf/DoublyLinkedList.h" |
| #include "wtf/Forward.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/Noncopyable.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/Vector.h" |
| |
| namespace WebCore { |
| |
| class ElementShadow { |
| WTF_MAKE_NONCOPYABLE(ElementShadow); WTF_MAKE_FAST_ALLOCATED; |
| public: |
| static PassOwnPtr<ElementShadow> create(); |
| ~ElementShadow(); |
| |
| Element* host() const; |
| ShadowRoot* youngestShadowRoot() const { return m_shadowRoots.head(); } |
| ShadowRoot* oldestShadowRoot() const { return m_shadowRoots.tail(); } |
| ElementShadow* containingShadow() const; |
| |
| ShadowRoot* addShadowRoot(Element& shadowHost, ShadowRoot::ShadowRootType); |
| |
| bool applyAuthorStyles() const { return m_applyAuthorStyles; } |
| bool didAffectApplyAuthorStyles(); |
| bool containsActiveStyles() const; |
| |
| void attach(const Node::AttachContext&); |
| void detach(const Node::AttachContext&); |
| |
| void removeAllEventListeners(); |
| |
| void didAffectSelector(AffectedSelectorMask); |
| void willAffectSelector(); |
| const SelectRuleFeatureSet& ensureSelectFeatureSet(); |
| |
| void distributeIfNeeded(); |
| void setNeedsDistributionRecalc(); |
| |
| const InsertionPoint* finalDestinationInsertionPointFor(const Node*) const; |
| const DestinationInsertionPoints* destinationInsertionPointsFor(const Node*) const; |
| |
| void didDistributeNode(const Node*, InsertionPoint*); |
| |
| private: |
| ElementShadow(); |
| |
| void removeAllShadowRoots(); |
| bool resolveApplyAuthorStyles() const; |
| |
| void distribute(); |
| void clearDistribution(); |
| |
| void collectSelectFeatureSetFrom(ShadowRoot*); |
| void distributeNodeChildrenTo(InsertionPoint*, ContainerNode*); |
| |
| bool needsSelectFeatureSet() const { return m_needsSelectFeatureSet; } |
| void setNeedsSelectFeatureSet() { m_needsSelectFeatureSet = true; } |
| |
| typedef HashMap<const Node*, DestinationInsertionPoints> NodeToDestinationInsertionPoints; |
| NodeToDestinationInsertionPoints m_nodeToInsertionPoints; |
| |
| SelectRuleFeatureSet m_selectFeatures; |
| DoublyLinkedList<ShadowRoot> m_shadowRoots; |
| bool m_needsDistributionRecalc; |
| bool m_applyAuthorStyles; |
| bool m_needsSelectFeatureSet; |
| }; |
| |
| inline Element* ElementShadow::host() const |
| { |
| ASSERT(!m_shadowRoots.isEmpty()); |
| return youngestShadowRoot()->host(); |
| } |
| |
| inline ShadowRoot* Node::youngestShadowRoot() const |
| { |
| if (!this->isElementNode()) |
| return 0; |
| if (ElementShadow* shadow = toElement(this)->shadow()) |
| return shadow->youngestShadowRoot(); |
| return 0; |
| } |
| |
| inline ElementShadow* ElementShadow::containingShadow() const |
| { |
| if (ShadowRoot* parentRoot = host()->containingShadowRoot()) |
| return parentRoot->owner(); |
| return 0; |
| } |
| |
| inline void ElementShadow::distributeIfNeeded() |
| { |
| if (m_needsDistributionRecalc) |
| distribute(); |
| m_needsDistributionRecalc = false; |
| } |
| |
| } // namespace |
| |
| #endif |