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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
#include "ListMutationObserver.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "nsIFrame.h"
namespace mozilla {
NS_IMPL_ISUPPORTS(ListMutationObserver, nsIMutationObserver)
ListMutationObserver::~ListMutationObserver() = default;
void ListMutationObserver::Attach(bool aRepaint) {
nsAutoString id;
if (InputElement().GetAttr(nsGkAtoms::list_, id)) {
Unlink();
RefPtr<nsAtom> idAtom = NS_AtomizeMainThread(id);
ResetWithID(InputElement(), idAtom);
AddObserverIfNeeded();
}
if (aRepaint) {
mOwningElementFrame->InvalidateFrame();
}
}
void ListMutationObserver::AddObserverIfNeeded() {
if (auto* list = get()) {
if (list->IsHTMLElement(nsGkAtoms::datalist)) {
list->AddMutationObserver(this);
}
}
}
void ListMutationObserver::RemoveObserverIfNeeded(dom::Element* aList) {
if (aList && aList->IsHTMLElement(nsGkAtoms::datalist)) {
aList->RemoveMutationObserver(this);
}
}
void ListMutationObserver::Detach() {
RemoveObserverIfNeeded();
Unlink();
}
dom::HTMLInputElement& ListMutationObserver::InputElement() const {
MOZ_ASSERT(mOwningElementFrame->GetContent()->IsHTMLElement(nsGkAtoms::input),
"bad cast");
return *static_cast<dom::HTMLInputElement*>(
mOwningElementFrame->GetContent());
}
void ListMutationObserver::AttributeChanged(dom::Element* aElement,
int32_t aNameSpaceID,
nsAtom* aAttribute,
int32_t aModType,
const nsAttrValue* aOldValue) {
if (aAttribute == nsGkAtoms::value && aNameSpaceID == kNameSpaceID_None &&
aElement->IsHTMLElement(nsGkAtoms::option)) {
mOwningElementFrame->InvalidateFrame();
}
}
void ListMutationObserver::CharacterDataChanged(
nsIContent* aContent, const CharacterDataChangeInfo& aInfo) {
mOwningElementFrame->InvalidateFrame();
}
void ListMutationObserver::ContentAppended(nsIContent* aFirstNewContent) {
mOwningElementFrame->InvalidateFrame();
}
void ListMutationObserver::ContentInserted(nsIContent* aChild) {
mOwningElementFrame->InvalidateFrame();
}
void ListMutationObserver::ContentRemoved(nsIContent* aChild,
nsIContent* aPreviousSibling) {
mOwningElementFrame->InvalidateFrame();
}
void ListMutationObserver::ElementChanged(dom::Element* aFrom,
dom::Element* aTo) {
IDTracker::ElementChanged(aFrom, aTo);
RemoveObserverIfNeeded(aFrom);
AddObserverIfNeeded();
mOwningElementFrame->InvalidateFrame();
}
} // namespace mozilla