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Impressum MutationObservers.h
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/* -*- 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 DOM_BASE_MUTATIONOBSERVERS_H_ #define DOM_BASE_MUTATIONOBSERVERS_H_ #include "mozilla/DoublyLinkedList.h" #include "nsIContent.h" // for use in inline function (NotifyParentChainChanged) #include "nsIMutationObserver.h" // for use in inline function (NotifyParentChainChanged #include "nsINode.h" class nsAtom; class nsAttrValue; struct BatchRemovalState; namespace mozilla::dom { class Animation; class Element; class MutationObservers { public: /** * Send CharacterDataWillChange notifications to nsIMutationObservers. * @param aContent Node whose data changed * @param aInfo Struct with information details about the change * @see nsIMutationObserver::CharacterDataWillChange */ static void NotifyCharacterDataWillChange(nsIContent* aContent, const CharacterDataChangeInfo&); /** * Send CharacterDataChanged notifications to nsIMutationObservers. * @param aContent Node whose data changed * @param aInfo Struct with information details about the change * @see nsIMutationObserver::CharacterDataChanged */ static void NotifyCharacterDataChanged(nsIContent* aContent, const CharacterDataChangeInfo&); /** * Send AttributeWillChange notifications to nsIMutationObservers. * @param aElement Element whose data will change * @param aNameSpaceID Namespace of changing attribute * @param aAttribute Local-name of changing attribute * @param aModType Type of change (add/change/removal) * @see nsIMutationObserver::AttributeWillChange */ static void NotifyAttributeWillChange(mozilla::dom::Element* aElement, int32_t aNameSpaceID, nsAtom* aAttribute, int32_t aModType); /** * Send AttributeChanged notifications to nsIMutationObservers. * @param aElement Element whose data changed * @param aNameSpaceID Namespace of changed attribute * @param aAttribute Local-name of changed attribute * @param aModType Type of change (add/change/removal) * @param aOldValue If the old value was StoresOwnData() (or absent), * that value, otherwise null * @see nsIMutationObserver::AttributeChanged */ static void NotifyAttributeChanged(mozilla::dom::Element* aElement, int32_t aNameSpaceID, nsAtom* aAttribute, int32_t aModType, const nsAttrValue* aOldValue); /** * Send AttributeSetToCurrentValue notifications to nsIMutationObservers. * @param aElement Element whose data changed * @param aNameSpaceID Namespace of the attribute * @param aAttribute Local-name of the attribute * @see nsIMutationObserver::AttributeSetToCurrentValue */ static void NotifyAttributeSetToCurrentValue(mozilla::dom::Element* aElement, int32_t aNameSpaceID, nsAtom* aAttribute); /** * Send ContentAppended notifications to nsIMutationObservers * @param aContainer Node into which new child/children were added * @param aFirstNewContent First new child * @see nsIMutationObserver::ContentAppended */ static void NotifyContentAppended(nsIContent* aContainer, nsIContent* aFirstNewContent); /** * Send ContentInserted notifications to nsIMutationObservers * @param aContainer Node into which new child was inserted * @param aChild Newly inserted child * @see nsIMutationObserver::ContentInserted */ static void NotifyContentInserted(nsINode* aContainer, nsIContent* aChild); /** * Send ContentWillBeRemoved notifications to nsIMutationObservers * @param aContainer Node from which child was removed * @param aChild Removed child * @param aBatchRemoving Whether we'll be removing all children of this * container. This is useful to avoid wasteful work. * @see nsIMutationObserver::ContentWillBeRemoved */ static void NotifyContentWillBeRemoved(nsINode* aContainer, nsIContent* aChild, const BatchRemovalState*); /** * Send ParentChainChanged notifications to nsIMutationObservers * @param aContent The piece of content that had its parent changed. * @see nsIMutationObserver::ParentChainChanged */ static inline void NotifyParentChainChanged(nsIContent* aContent) { mozilla::SafeDoublyLinkedList<nsIMutationObserver>* observers = aContent->GetMutationObservers(); if (observers) { for (auto iter = observers->begin(); iter != observers->end(); ++iter) { if (iter->IsCallbackEnabled(nsIMutationObserver::kParentChainChanged)) { iter->ParentChainChanged(aContent); } } } } static void NotifyARIAAttributeDefaultWillChange( mozilla::dom::Element* aElement, nsAtom* aAttribute, int32_t aModType); static void NotifyARIAAttributeDefaultChanged(mozilla::dom::Element* aElement, nsAtom* aAttribute, int32_t aModType); /** * Notify that an animation is added/changed/removed. * @param aAnimation The animation we added/changed/removed. */ static void NotifyAnimationAdded(mozilla::dom::Animation* aAnimation); static void NotifyAnimationChanged(mozilla::dom::Animation* aAnimation); static void NotifyAnimationRemoved(mozilla::dom::Animation* aAnimation); private: enum class AnimationMutationType { Added, Changed, Removed }; /** * Notify the observers of the target of an animation * @param aAnimation The mutated animation. * @param aMutationType The mutation type of this animation. It could be * Added, Changed, or Removed. */ static void NotifyAnimationMutated(mozilla::dom::Animation* aAnimation, AnimationMutationType aMutatedType); }; } // namespace mozilla::dom #endif // DOM_BASE_MUTATIONOBSERVERS_H_ ¤ Diese beiden folgenden Angebotsgruppen bietet das Unternehmen0.0Angebot Wie Sie bei der Firma Beratungs- und Dienstleistungen beauftragen können ¤*Eine klare Vorstellung vom Zielzustand |
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2026-03-28