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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 nsChangeObserver_h_
#define nsChangeObserver_h_
class nsIContent;
class nsAtom;
namespace mozilla {
namespace dom {
class Document;
}
} // namespace mozilla
#define NS_DECL_CHANGEOBSERVER \
void ObserveAttributeChanged(mozilla::dom::Document* aDocument, \
nsIContent* aContent, nsAtom* aAttribute) \
override; \
void ObserveContentRemoved(mozilla::dom::Document* aDocument, \
nsIContent* aContainer, nsIContent* aChild, \
nsIContent* aPreviousChild) override; \
void ObserveContentInserted(mozilla::dom::Document* aDocument, \
nsIContent* aContainer, nsIContent* aChild) \
override;
// Something that wants to be alerted to changes in attributes or changes in
// its corresponding content object.
//
// This interface is used by our menu code so we only have to have one
// nsIDocumentObserver.
//
// Any class that implements this interface must take care to unregister itself
// on deletion.
class nsChangeObserver {
public:
// XXX use dom::Element
virtual void ObserveAttributeChanged(mozilla::dom::Document* aDocument,
nsIContent* aContent,
nsAtom* aAttribute) = 0;
virtual void ObserveContentRemoved(mozilla::dom::Document* aDocument,
nsIContent* aContainer, nsIContent* aChild,
nsIContent* aPreviousSibling) = 0;
virtual void ObserveContentInserted(mozilla::dom::Document* aDocument,
nsIContent* aContainer,
nsIContent* aChild) = 0;
};
#endif // nsChangeObserver_h_
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