/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef mozilla_ServoRestyleManager_h #define mozilla_ServoRestyleManager_h #include "mozilla/EventStates.h" #include "mozilla/RestyleManagerBase.h" #include "mozilla/ServoElementSnapshot.h" #include "nsChangeHint.h" #include "nsHashKeys.h" #include "nsINode.h" #include "nsISupportsImpl.h" #include "nsPresContext.h" namespace mozilla { namespace dom { class Element; } // namespace dom } // namespace mozilla class nsAttrValue; class nsIAtom; class nsIContent; class nsIFrame; class nsStyleChangeList; namespace mozilla { /** * Restyle manager for a Servo-backed style system. */ class ServoRestyleManager : public RestyleManagerBase { friend class ServoStyleSet; public: typedef RestyleManagerBase base_type; NS_INLINE_DECL_REFCOUNTING(ServoRestyleManager) explicit ServoRestyleManager(nsPresContext* aPresContext); void PostRestyleEvent(dom::Element* aElement, nsRestyleHint aRestyleHint, nsChangeHint aMinChangeHint); void PostRestyleEventForLazyConstruction(); void RebuildAllStyleData(nsChangeHint aExtraHint, nsRestyleHint aRestyleHint); void PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint, nsRestyleHint aRestyleHint); void ProcessPendingRestyles(); void ContentInserted(nsINode* aContainer, nsIContent* aChild); void ContentAppended(nsIContent* aContainer, nsIContent* aFirstNewContent); void ContentRemoved(nsINode* aContainer, nsIContent* aOldChild, nsIContent* aFollowingSibling); void RestyleForInsertOrChange(nsINode* aContainer, nsIContent* aChild); void RestyleForAppend(nsIContent* aContainer, nsIContent* aFirstNewContent); nsresult ContentStateChanged(nsIContent* aContent, EventStates aStateMask); void AttributeWillChange(dom::Element* aElement, int32_t aNameSpaceID, nsIAtom* aAttribute, int32_t aModType, const nsAttrValue* aNewValue); void AttributeChanged(dom::Element* aElement, int32_t aNameSpaceID, nsIAtom* aAttribute, int32_t aModType, const nsAttrValue* aOldValue); nsresult ReparentStyleContext(nsIFrame* aFrame); bool HasPendingRestyles() { return !mModifiedElements.IsEmpty() || PresContext()->Document()->HasDirtyDescendantsForServo(); } /** * Gets the appropriate frame given a content and a pseudo-element tag. * * Right now only supports a null tag, before or after. If the pseudo-element * is not null, the content needs to be an element. */ static nsIFrame* FrameForPseudoElement(const nsIContent* aContent, nsIAtom* aPseudoTagOrNull); protected: ~ServoRestyleManager() {} private: ServoElementSnapshot* SnapshotForElement(Element* aElement); /** * The element-to-element snapshot table to compute restyle hints. */ nsClassHashtable<nsRefPtrHashKey<Element>, ServoElementSnapshot> mModifiedElements; /** * Traverses a tree of content that Servo has just restyled, recreating style * contexts for their frames with the new style data. */ void RecreateStyleContexts(nsIContent* aContent, nsStyleContext* aParentContext, ServoStyleSet* aStyleSet, nsStyleChangeList& aChangeList); /** * Marks the tree with the appropriate dirty flags for the given restyle hint. */ static void NoteRestyleHint(Element* aElement, nsRestyleHint aRestyleHint); inline ServoStyleSet* StyleSet() const { MOZ_ASSERT(PresContext()->StyleSet()->IsServo(), "ServoRestyleManager should only be used with a Servo-flavored " "style backend"); return PresContext()->StyleSet()->AsServo(); } }; } // namespace mozilla #endif // mozilla_ServoRestyleManager_h