/* -*- 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/. */
namespace dom { class HTMLInputElement;
} // namespace dom
/** * ListMutationObserver * This class invalidates paint for the input element's frame when the content * of its @list changes, or when the @list ID identifies a different element. It * does *not* invalidate paint when the @list attribute itself changes.
*/
class ListMutationObserver final : public nsStubMutationObserver, public dom::IDTracker { public: explicit ListMutationObserver(nsIFrame& aOwningElementFrame, bool aRepaint = false)
: mOwningElementFrame(&aOwningElementFrame) { // We can skip invalidating paint if the frame is still being initialized.
Attach(aRepaint);
}
NS_DECL_ISUPPORTS
// We need to invalidate paint when the list or its options change.
NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
/** * Triggered when the same @list ID identifies a different element than * before.
*/ void ElementChanged(dom::Element* aFrom, dom::Element* aTo) override;
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