45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsChangeObserver_h_
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#define nsChangeObserver_h_
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class nsIContent;
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class nsIDocument;
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class nsIAtom;
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#define NS_DECL_CHANGEOBSERVER \
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void ObserveAttributeChanged(nsIDocument *aDocument, nsIContent *aContent, nsIAtom *aAttribute) override; \
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void ObserveContentRemoved(nsIDocument *aDocument, nsIContent *aChild, int32_t aIndexInContainer) override; \
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void ObserveContentInserted(nsIDocument *aDocument, nsIContent* aContainer, nsIContent *aChild) override;
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// Something that wants to be alerted to changes in attributes or changes in
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// its corresponding content object.
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//
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// This interface is used by our menu code so we only have to have one
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// nsIDocumentObserver.
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//
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// Any class that implements this interface must take care to unregister itself
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// on deletion.
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class nsChangeObserver
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{
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public:
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// XXX use dom::Element
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virtual void ObserveAttributeChanged(nsIDocument* aDocument,
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nsIContent* aContent,
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nsIAtom* aAttribute)=0;
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virtual void ObserveContentRemoved(nsIDocument* aDocument,
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nsIContent* aChild,
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int32_t aIndexInContainer)=0;
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virtual void ObserveContentInserted(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aChild)=0;
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};
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#endif // nsChangeObserver_h_
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