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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/HTMLOutputElement.h"
#include "mozAutoDocUpdate.h"
#include "mozilla/dom/HTMLFormElement.h"
#include "mozilla/dom/HTMLOutputElementBinding.h"
#include "nsContentUtils.h"
#include "nsDOMTokenList.h"
NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(Output)
namespace mozilla::dom {
HTMLOutputElement::HTMLOutputElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
FromParser aFromParser)
: nsGenericHTMLFormControlElement(std::move(aNodeInfo),
FormControlType::Output),
mValueModeFlag(eModeDefault),
mIsDoneAddingChildren(!aFromParser) {
AddMutationObserver(this);
// <output> is always barred from constraint validation since it is not a
// submittable element.
SetBarredFromConstraintValidation(true);
}
HTMLOutputElement::~HTMLOutputElement() = default;
NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLOutputElement,
nsGenericHTMLFormControlElement, mValidity,
mTokenList)
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLOutputElement,
nsGenericHTMLFormControlElement,
nsIMutationObserver,
nsIConstraintValidation)
NS_IMPL_ELEMENT_CLONE(HTMLOutputElement)
void HTMLOutputElement::SetCustomValidity(const nsAString& aError) {
ConstraintValidation::SetCustomValidity(aError);
}
NS_IMETHODIMP
HTMLOutputElement::Reset() {
mValueModeFlag = eModeDefault;
// We can't pass mDefaultValue, because it'll be truncated when
// the element's descendants are changed, so pass a copy instead.
const nsAutoString currentDefaultValue(mDefaultValue);
return nsContentUtils::SetNodeTextContent(this, currentDefaultValue, true);
}
bool HTMLOutputElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::_for) {
aResult.ParseAtomArray(aValue);
return true;
}
}
return nsGenericHTMLFormControlElement::ParseAttribute(
aNamespaceID, aAttribute, aValue, aMaybeScriptedPrincipal, aResult);
}
void HTMLOutputElement::DoneAddingChildren(bool aHaveNotified) {
mIsDoneAddingChildren = true;
// We should update DefaultValue, after parsing is done.
DescendantsChanged();
}
void HTMLOutputElement::GetValue(nsAString& aValue) const {
nsContentUtils::GetNodeTextContent(this, true, aValue);
}
void HTMLOutputElement::SetValue(const nsAString& aValue, ErrorResult& aRv) {
mValueModeFlag = eModeValue;
aRv = nsContentUtils::SetNodeTextContent(this, aValue, true);
}
void HTMLOutputElement::SetDefaultValue(const nsAString& aDefaultValue,
ErrorResult& aRv) {
mDefaultValue = aDefaultValue;
if (mValueModeFlag == eModeDefault) {
// We can't pass mDefaultValue, because it'll be truncated when
// the element's descendants are changed.
aRv = nsContentUtils::SetNodeTextContent(this, aDefaultValue, true);
}
}
nsDOMTokenList* HTMLOutputElement::HtmlFor() {
if (!mTokenList) {
mTokenList = new nsDOMTokenList(this, nsGkAtoms::_for);
}
return mTokenList;
}
void HTMLOutputElement::DescendantsChanged() {
if (mIsDoneAddingChildren && mValueModeFlag == eModeDefault) {
nsContentUtils::GetNodeTextContent(this, true, mDefaultValue);
}
}
// nsIMutationObserver
void HTMLOutputElement::CharacterDataChanged(nsIContent* aContent,
const CharacterDataChangeInfo&) {
DescendantsChanged();
}
void HTMLOutputElement::ContentAppended(nsIContent* aFirstNewContent,
const ContentAppendInfo&) {
DescendantsChanged();
}
void HTMLOutputElement::ContentInserted(nsIContent* aChild,
const ContentInsertInfo&) {
DescendantsChanged();
}
void HTMLOutputElement::ContentWillBeRemoved(nsIContent* aChild,
const ContentRemoveInfo& aInfo) {
if (aInfo.mBatchRemovalState && !aInfo.mBatchRemovalState->mIsFirst) {
return;
}
// Make sure to run this once the removal has taken place.
nsContentUtils::AddScriptRunner(
NewRunnableMethod("HTMLOutputElement::DescendantsChanged", this,
&HTMLOutputElement::DescendantsChanged));
}
JSObject* HTMLOutputElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLOutputElement_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace mozilla::dom
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