mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-17 23:35:34 +00:00
4275cd1039
In order to tailor certain security checks to the caller that is attempting to load a particular piece of content, we need to be able to attach an appropriate triggering principal to the corresponding requests. Since most HTML content is loaded based on attribute values, that means capturing the subject principal of the caller who sets those attributes, which means making it available to AfterSetAttr hooks. MozReview-Commit-ID: BMDL2Uepg0X --HG-- extra : rebase_source : 25e438c243700a9368c393e40e3a6002d968d6c8
349 lines
9.9 KiB
C++
349 lines
9.9 KiB
C++
/* -*- 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/BasicEvents.h"
|
|
#include "mozilla/EventDispatcher.h"
|
|
#include "mozilla/EventStates.h"
|
|
#include "mozilla/dom/HTMLFieldSetElement.h"
|
|
#include "mozilla/dom/HTMLFieldSetElementBinding.h"
|
|
#include "nsContentList.h"
|
|
#include "nsQueryObject.h"
|
|
|
|
NS_IMPL_NS_NEW_HTML_ELEMENT(FieldSet)
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
HTMLFieldSetElement::HTMLFieldSetElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
|
|
: nsGenericHTMLFormElement(aNodeInfo, NS_FORM_FIELDSET)
|
|
, mElements(nullptr)
|
|
, mFirstLegend(nullptr)
|
|
, mInvalidElementsCount(0)
|
|
{
|
|
// <fieldset> is always barred from constraint validation.
|
|
SetBarredFromConstraintValidation(true);
|
|
|
|
// We start out enabled and valid.
|
|
AddStatesSilently(NS_EVENT_STATE_ENABLED | NS_EVENT_STATE_VALID);
|
|
}
|
|
|
|
HTMLFieldSetElement::~HTMLFieldSetElement()
|
|
{
|
|
uint32_t length = mDependentElements.Length();
|
|
for (uint32_t i = 0; i < length; ++i) {
|
|
mDependentElements[i]->ForgetFieldSet(this);
|
|
}
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLFieldSetElement, nsGenericHTMLFormElement,
|
|
mValidity, mElements)
|
|
|
|
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLFieldSetElement,
|
|
nsGenericHTMLFormElement,
|
|
nsIConstraintValidation)
|
|
|
|
NS_IMPL_ELEMENT_CLONE(HTMLFieldSetElement)
|
|
|
|
|
|
bool
|
|
HTMLFieldSetElement::IsDisabledForEvents(EventMessage aMessage)
|
|
{
|
|
return IsElementDisabledForEvents(aMessage, nullptr);
|
|
}
|
|
|
|
// nsIContent
|
|
nsresult
|
|
HTMLFieldSetElement::GetEventTargetParent(EventChainPreVisitor& aVisitor)
|
|
{
|
|
// Do not process any DOM events if the element is disabled.
|
|
aVisitor.mCanHandle = false;
|
|
if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return nsGenericHTMLFormElement::GetEventTargetParent(aVisitor);
|
|
}
|
|
|
|
nsresult
|
|
HTMLFieldSetElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
|
|
const nsAttrValue* aValue,
|
|
const nsAttrValue* aOldValue,
|
|
nsIPrincipal* aSubjectPrincipal,
|
|
bool aNotify)
|
|
{
|
|
if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::disabled) {
|
|
// This *has* to be called *before* calling FieldSetDisabledChanged on our
|
|
// controls, as they may depend on our disabled state.
|
|
UpdateDisabledState(aNotify);
|
|
|
|
if (nsINode::GetFirstChild()) {
|
|
if (!mElements) {
|
|
mElements = new nsContentList(this, MatchListedElements, nullptr, nullptr,
|
|
true);
|
|
}
|
|
|
|
uint32_t length = mElements->Length(true);
|
|
for (uint32_t i=0; i<length; ++i) {
|
|
static_cast<nsGenericHTMLFormElement*>(mElements->Item(i))
|
|
->FieldSetDisabledChanged(aNotify);
|
|
}
|
|
}
|
|
}
|
|
|
|
return nsGenericHTMLFormElement::AfterSetAttr(aNameSpaceID, aName,
|
|
aValue, aOldValue,
|
|
aSubjectPrincipal, aNotify);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
HTMLFieldSetElement::GetType(nsAString& aType)
|
|
{
|
|
aType.AssignLiteral("fieldset");
|
|
return NS_OK;
|
|
}
|
|
|
|
/* static */
|
|
bool
|
|
HTMLFieldSetElement::MatchListedElements(Element* aElement, int32_t aNamespaceID,
|
|
nsAtom* aAtom, void* aData)
|
|
{
|
|
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(aElement);
|
|
return formControl;
|
|
}
|
|
|
|
nsIHTMLCollection*
|
|
HTMLFieldSetElement::Elements()
|
|
{
|
|
if (!mElements) {
|
|
mElements = new nsContentList(this, MatchListedElements, nullptr, nullptr,
|
|
true);
|
|
}
|
|
|
|
return mElements;
|
|
}
|
|
|
|
// nsIFormControl
|
|
|
|
nsresult
|
|
HTMLFieldSetElement::Reset()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
HTMLFieldSetElement::SubmitNamesValues(HTMLFormSubmission* aFormSubmission)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
HTMLFieldSetElement::InsertChildAt(nsIContent* aChild, uint32_t aIndex,
|
|
bool aNotify)
|
|
{
|
|
bool firstLegendHasChanged = false;
|
|
|
|
if (aChild->IsHTMLElement(nsGkAtoms::legend)) {
|
|
if (!mFirstLegend) {
|
|
mFirstLegend = aChild;
|
|
// We do not want to notify the first time mFirstElement is set.
|
|
} else {
|
|
// If mFirstLegend is before aIndex, we do not change it.
|
|
// Otherwise, mFirstLegend is now aChild.
|
|
if (int32_t(aIndex) <= IndexOf(mFirstLegend)) {
|
|
mFirstLegend = aChild;
|
|
firstLegendHasChanged = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult rv = nsGenericHTMLFormElement::InsertChildAt(aChild, aIndex, aNotify);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (firstLegendHasChanged) {
|
|
NotifyElementsForFirstLegendChange(aNotify);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
HTMLFieldSetElement::RemoveChildAt(uint32_t aIndex, bool aNotify)
|
|
{
|
|
bool firstLegendHasChanged = false;
|
|
|
|
if (mFirstLegend && (GetChildAt(aIndex) == mFirstLegend)) {
|
|
// If we are removing the first legend we have to found another one.
|
|
nsIContent* child = mFirstLegend->GetNextSibling();
|
|
mFirstLegend = nullptr;
|
|
firstLegendHasChanged = true;
|
|
|
|
for (; child; child = child->GetNextSibling()) {
|
|
if (child->IsHTMLElement(nsGkAtoms::legend)) {
|
|
mFirstLegend = child;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsGenericHTMLFormElement::RemoveChildAt(aIndex, aNotify);
|
|
|
|
if (firstLegendHasChanged) {
|
|
NotifyElementsForFirstLegendChange(aNotify);
|
|
}
|
|
}
|
|
|
|
void
|
|
HTMLFieldSetElement::AddElement(nsGenericHTMLFormElement* aElement)
|
|
{
|
|
mDependentElements.AppendElement(aElement);
|
|
|
|
// If the element that we are adding aElement is a fieldset, then all the
|
|
// invalid elements in aElement are also invalid elements of this.
|
|
HTMLFieldSetElement* fieldSet = FromContent(aElement);
|
|
if (fieldSet) {
|
|
for (int32_t i = 0; i < fieldSet->mInvalidElementsCount; i++) {
|
|
UpdateValidity(false);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// We need to update the validity of the fieldset.
|
|
nsCOMPtr<nsIConstraintValidation> cvElmt = do_QueryObject(aElement);
|
|
if (cvElmt &&
|
|
cvElmt->IsCandidateForConstraintValidation() && !cvElmt->IsValid()) {
|
|
UpdateValidity(false);
|
|
}
|
|
|
|
#if DEBUG
|
|
int32_t debugInvalidElementsCount = 0;
|
|
for (uint32_t i = 0; i < mDependentElements.Length(); i++) {
|
|
HTMLFieldSetElement* fieldSet = FromContent(mDependentElements[i]);
|
|
if (fieldSet) {
|
|
debugInvalidElementsCount += fieldSet->mInvalidElementsCount;
|
|
continue;
|
|
}
|
|
nsCOMPtr<nsIConstraintValidation>
|
|
cvElmt = do_QueryObject(mDependentElements[i]);
|
|
if (cvElmt &&
|
|
cvElmt->IsCandidateForConstraintValidation() &&
|
|
!(cvElmt->IsValid())) {
|
|
debugInvalidElementsCount += 1;
|
|
}
|
|
}
|
|
MOZ_ASSERT(debugInvalidElementsCount == mInvalidElementsCount);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
HTMLFieldSetElement::RemoveElement(nsGenericHTMLFormElement* aElement)
|
|
{
|
|
mDependentElements.RemoveElement(aElement);
|
|
|
|
// If the element that we are removing aElement is a fieldset, then all the
|
|
// invalid elements in aElement are also removed from this.
|
|
HTMLFieldSetElement* fieldSet = FromContent(aElement);
|
|
if (fieldSet) {
|
|
for (int32_t i = 0; i < fieldSet->mInvalidElementsCount; i++) {
|
|
UpdateValidity(true);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// We need to update the validity of the fieldset.
|
|
nsCOMPtr<nsIConstraintValidation> cvElmt = do_QueryObject(aElement);
|
|
if (cvElmt &&
|
|
cvElmt->IsCandidateForConstraintValidation() && !cvElmt->IsValid()) {
|
|
UpdateValidity(true);
|
|
}
|
|
|
|
#if DEBUG
|
|
int32_t debugInvalidElementsCount = 0;
|
|
for (uint32_t i = 0; i < mDependentElements.Length(); i++) {
|
|
HTMLFieldSetElement* fieldSet = FromContent(mDependentElements[i]);
|
|
if (fieldSet) {
|
|
debugInvalidElementsCount += fieldSet->mInvalidElementsCount;
|
|
continue;
|
|
}
|
|
nsCOMPtr<nsIConstraintValidation>
|
|
cvElmt = do_QueryObject(mDependentElements[i]);
|
|
if (cvElmt &&
|
|
cvElmt->IsCandidateForConstraintValidation() &&
|
|
!(cvElmt->IsValid())) {
|
|
debugInvalidElementsCount += 1;
|
|
}
|
|
}
|
|
MOZ_ASSERT(debugInvalidElementsCount == mInvalidElementsCount);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
HTMLFieldSetElement::NotifyElementsForFirstLegendChange(bool aNotify)
|
|
{
|
|
/**
|
|
* NOTE: this could be optimized if only call when the fieldset is currently
|
|
* disabled.
|
|
* This should also make sure that mElements is set when we happen to be here.
|
|
* However, this method shouldn't be called very often in normal use cases.
|
|
*/
|
|
if (!mElements) {
|
|
mElements = new nsContentList(this, MatchListedElements, nullptr, nullptr,
|
|
true);
|
|
}
|
|
|
|
uint32_t length = mElements->Length(true);
|
|
for (uint32_t i = 0; i < length; ++i) {
|
|
static_cast<nsGenericHTMLFormElement*>(mElements->Item(i))
|
|
->FieldSetFirstLegendChanged(aNotify);
|
|
}
|
|
}
|
|
|
|
void
|
|
HTMLFieldSetElement::UpdateValidity(bool aElementValidity)
|
|
{
|
|
if (aElementValidity) {
|
|
--mInvalidElementsCount;
|
|
} else {
|
|
++mInvalidElementsCount;
|
|
}
|
|
|
|
MOZ_ASSERT(mInvalidElementsCount >= 0);
|
|
|
|
// The fieldset validity has just changed if:
|
|
// - there are no more invalid elements ;
|
|
// - or there is one invalid elmement and an element just became invalid.
|
|
if (!mInvalidElementsCount || (mInvalidElementsCount == 1 && !aElementValidity)) {
|
|
UpdateState(true);
|
|
}
|
|
|
|
// We should propagate the change to the fieldset parent chain.
|
|
if (mFieldSet) {
|
|
mFieldSet->UpdateValidity(aElementValidity);
|
|
}
|
|
}
|
|
|
|
EventStates
|
|
HTMLFieldSetElement::IntrinsicState() const
|
|
{
|
|
EventStates state = nsGenericHTMLFormElement::IntrinsicState();
|
|
|
|
if (mInvalidElementsCount) {
|
|
state |= NS_EVENT_STATE_INVALID;
|
|
} else {
|
|
state |= NS_EVENT_STATE_VALID;
|
|
}
|
|
|
|
return state;
|
|
}
|
|
|
|
JSObject*
|
|
HTMLFieldSetElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
return HTMLFieldSetElementBinding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|