From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- widget/cocoa/nsChangeObserver.h | 71 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 widget/cocoa/nsChangeObserver.h (limited to 'widget/cocoa/nsChangeObserver.h') diff --git a/widget/cocoa/nsChangeObserver.h b/widget/cocoa/nsChangeObserver.h new file mode 100644 index 0000000000..aacf837bb5 --- /dev/null +++ b/widget/cocoa/nsChangeObserver.h @@ -0,0 +1,71 @@ +/* -*- 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 +// nsIMutationObserver per menu subtree root (e.g. per menubar). +// +// Any class that implements this interface must take care to unregister itself +// on deletion. +// +// XXXmstange The methods below use nsIContent*. Eventually, the should be +// converted to use mozilla::dom::Element* instead. +class nsChangeObserver { + public: + // Called when the attribute aAttribute on the element aContent has changed. + // Only if aContent is being observed by this nsChangeObserver. + virtual void ObserveAttributeChanged(mozilla::dom::Document* aDocument, + nsIContent* aContent, + nsAtom* aAttribute) = 0; + + // Called when aChild has been removed from its parent aContainer. + // aPreviousSibling is the old previous sibling of aChild. + // aContainer is always the old parent node of aChild and of aPreviousSibling. + // Only called if aContainer or aContainer's parent node are being observed + // by this nsChangeObserver. + // In other words: If you observe an element, ObserveContentRemoved is called + // if that element's children and grandchildren are removed. NOT if the + // observed element itself is removed. + virtual void ObserveContentRemoved(mozilla::dom::Document* aDocument, + nsIContent* aContainer, nsIContent* aChild, + nsIContent* aPreviousSibling) = 0; + + // Called when aChild has been inserted into its new parent aContainer. + // Only called if aContainer or aContainer's parent node are being observed + // by this nsChangeObserver. + // In other words: If you observe an element, ObserveContentInserted is called + // if that element receives a new child or grandchild. NOT if the observed + // element itself is inserted anywhere. + virtual void ObserveContentInserted(mozilla::dom::Document* aDocument, + nsIContent* aContainer, + nsIContent* aChild) = 0; +}; + +#endif // nsChangeObserver_h_ -- cgit v1.2.3