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gecko-dev/dom/html/HTMLFormElement.cpp

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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/HTMLFormElement.h"
#include "jsapi.h"
#include "mozilla/ContentEvents.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/EventStates.h"
#include "mozilla/dom/nsCSPUtils.h"
#include "mozilla/dom/nsCSPContext.h"
#include "mozilla/dom/nsMixedContentBlocker.h"
#include "mozilla/dom/HTMLFormControlsCollection.h"
#include "mozilla/dom/HTMLFormElementBinding.h"
#include "mozilla/Move.h"
#include "nsIHTMLDocument.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsIDocument.h"
#include "nsIFormControlFrame.h"
#include "nsError.h"
#include "nsContentUtils.h"
#include "nsInterfaceHashtable.h"
#include "nsContentList.h"
#include "nsCOMArray.h"
#include "nsAutoPtr.h"
#include "nsTArray.h"
#include "nsIMutableArray.h"
#include "mozilla/BinarySearch.h"
#include "nsQueryObject.h"
// form submission
#include "HTMLFormSubmissionConstants.h"
#include "mozilla/dom/FormData.h"
#include "mozilla/Telemetry.h"
#include "nsIFormSubmitObserver.h"
#include "nsIObserverService.h"
#include "nsICategoryManager.h"
#include "nsCategoryManagerUtils.h"
#include "nsISimpleEnumerator.h"
#include "nsRange.h"
#include "nsIScriptError.h"
#include "nsIScriptSecurityManager.h"
#include "nsNetUtil.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIWebProgress.h"
#include "nsIDocShell.h"
#include "nsIPrompt.h"
#include "nsISecurityUITelemetry.h"
#include "nsIStringBundle.h"
// radio buttons
#include "mozilla/dom/HTMLInputElement.h"
#include "nsIRadioVisitor.h"
#include "RadioNodeList.h"
#include "nsLayoutUtils.h"
#include "mozAutoDocUpdate.h"
#include "nsIHTMLCollection.h"
#include "nsIConstraintValidation.h"
#include "nsSandboxFlags.h"
#include "nsIContentSecurityPolicy.h"
// images
#include "mozilla/dom/HTMLImageElement.h"
#include "mozilla/dom/HTMLButtonElement.h"
// construction, destruction
NS_IMPL_NS_NEW_HTML_ELEMENT(Form)
namespace mozilla {
namespace dom {
static const uint8_t NS_FORM_AUTOCOMPLETE_ON = 1;
static const uint8_t NS_FORM_AUTOCOMPLETE_OFF = 0;
static const nsAttrValue::EnumTable kFormAutocompleteTable[] = {
{ "on", NS_FORM_AUTOCOMPLETE_ON },
{ "off", NS_FORM_AUTOCOMPLETE_OFF },
{ nullptr, 0 }
};
// Default autocomplete value is 'on'.
static const nsAttrValue::EnumTable* kFormDefaultAutocomplete = &kFormAutocompleteTable[0];
bool HTMLFormElement::gFirstFormSubmitted = false;
bool HTMLFormElement::gPasswordManagerInitialized = false;
HTMLFormElement::HTMLFormElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: nsGenericHTMLElement(aNodeInfo),
mControls(new HTMLFormControlsCollection(this)),
mSelectedRadioButtons(2),
mRequiredRadioButtonCounts(2),
mValueMissingRadioGroups(2),
mPendingSubmission(nullptr),
mSubmittingRequest(nullptr),
mDefaultSubmitElement(nullptr),
mFirstSubmitInElements(nullptr),
mFirstSubmitNotInElements(nullptr),
mImageNameLookupTable(FORM_CONTROL_LIST_HASHTABLE_LENGTH),
mPastNameLookupTable(FORM_CONTROL_LIST_HASHTABLE_LENGTH),
mSubmitPopupState(openAbused),
mInvalidElementsCount(0),
mGeneratingSubmit(false),
mGeneratingReset(false),
mIsSubmitting(false),
mDeferSubmission(false),
mNotifiedObservers(false),
mNotifiedObserversResult(false),
mSubmitInitiatedFromUserInput(false),
mEverTriedInvalidSubmit(false)
{
// We start out valid.
AddStatesSilently(NS_EVENT_STATE_VALID);
}
HTMLFormElement::~HTMLFormElement()
{
if (mControls) {
mControls->DropFormReference();
}
Clear();
}
// nsISupports
NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLFormElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLFormElement,
nsGenericHTMLElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mControls)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mImageNameLookupTable)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPastNameLookupTable)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelectedRadioButtons)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLFormElement,
nsGenericHTMLElement)
tmp->Clear();
tmp->mExpandoAndGeneration.OwnerUnlinked();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLFormElement,
nsGenericHTMLElement,
nsIDOMHTMLFormElement,
nsIForm,
nsIWebProgressListener,
nsIRadioGroupContainer)
// EventTarget
void
HTMLFormElement::AsyncEventRunning(AsyncEventDispatcher* aEvent)
{
if (mFormPasswordEventDispatcher == aEvent) {
mFormPasswordEventDispatcher = nullptr;
}
}
// nsIDOMHTMLFormElement
NS_IMPL_ELEMENT_CLONE(HTMLFormElement)
nsIHTMLCollection*
HTMLFormElement::Elements()
{
return mControls;
}
nsresult
HTMLFormElement::BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValueOrString* aValue, bool aNotify)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aName == nsGkAtoms::action || aName == nsGkAtoms::target) {
if (mPendingSubmission) {
// aha, there is a pending submission that means we're in
// the script and we need to flush it. let's tell it
// that the event was ignored to force the flush.
// the second argument is not playing a role at all.
FlushPendingSubmission();
}
// Don't forget we've notified the password manager already if the
// page sets the action/target in the during submit. (bug 343182)
bool notifiedObservers = mNotifiedObservers;
ForgetCurrentSubmission();
mNotifiedObservers = notifiedObservers;
}
}
return nsGenericHTMLElement::BeforeSetAttr(aNamespaceID, aName, aValue,
aNotify);
}
nsresult
HTMLFormElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal,
bool aNotify)
{
if (aName == nsGkAtoms::novalidate && aNameSpaceID == kNameSpaceID_None) {
// Update all form elements states because they might be [no longer]
// affected by :-moz-ui-valid or :-moz-ui-invalid.
for (uint32_t i = 0, length = mControls->mElements.Length();
i < length; ++i) {
mControls->mElements[i]->UpdateState(true);
}
for (uint32_t i = 0, length = mControls->mNotInElements.Length();
i < length; ++i) {
mControls->mNotInElements[i]->UpdateState(true);
}
}
return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue,
aOldValue, aSubjectPrincipal, aNotify);
}
NS_IMPL_STRING_ATTR(HTMLFormElement, AcceptCharset, acceptcharset)
NS_IMPL_ACTION_ATTR(HTMLFormElement, Action, action)
NS_IMPL_ENUM_ATTR_DEFAULT_VALUE(HTMLFormElement, Autocomplete, autocomplete,
kFormDefaultAutocomplete->tag)
NS_IMPL_ENUM_ATTR_DEFAULT_VALUE(HTMLFormElement, Enctype, enctype,
kFormDefaultEnctype->tag)
NS_IMPL_ENUM_ATTR_DEFAULT_VALUE(HTMLFormElement, Method, method,
kFormDefaultMethod->tag)
NS_IMPL_BOOL_ATTR(HTMLFormElement, NoValidate, novalidate)
NS_IMPL_STRING_ATTR(HTMLFormElement, Name, name)
NS_IMPL_STRING_ATTR(HTMLFormElement, Target, target)
void
HTMLFormElement::Submit(ErrorResult& aRv)
{
// Send the submit event
if (mPendingSubmission) {
// aha, we have a pending submission that was not flushed
// (this happens when form.submit() is called twice)
// we have to delete it and build a new one since values
// might have changed inbetween (we emulate IE here, that's all)
mPendingSubmission = nullptr;
}
aRv = DoSubmitOrReset(nullptr, eFormSubmit);
}
NS_IMETHODIMP
HTMLFormElement::Submit()
{
ErrorResult rv;
Submit(rv);
return rv.StealNSResult();
}
NS_IMETHODIMP
HTMLFormElement::Reset()
{
InternalFormEvent event(true, eFormReset);
EventDispatcher::Dispatch(static_cast<nsIContent*>(this), nullptr, &event);
return NS_OK;
}
NS_IMETHODIMP
HTMLFormElement::CheckValidity(bool* retVal)
{
*retVal = CheckValidity();
return NS_OK;
}
bool
HTMLFormElement::ParseAttribute(int32_t aNamespaceID,
nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::method) {
return aResult.ParseEnumValue(aValue, kFormMethodTable, false);
}
if (aAttribute == nsGkAtoms::enctype) {
return aResult.ParseEnumValue(aValue, kFormEnctypeTable, false);
}
if (aAttribute == nsGkAtoms::autocomplete) {
return aResult.ParseEnumValue(aValue, kFormAutocompleteTable, false);
}
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
nsresult
HTMLFormElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers)
{
nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
aBindingParent,
aCompileEventHandlers);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIHTMLDocument> htmlDoc(do_QueryInterface(aDocument));
if (htmlDoc) {
htmlDoc->AddedForm();
}
return rv;
}
template<typename T>
static void
MarkOrphans(const nsTArray<T*>& aArray)
{
uint32_t length = aArray.Length();
for (uint32_t i = 0; i < length; ++i) {
aArray[i]->SetFlags(MAYBE_ORPHAN_FORM_ELEMENT);
}
}
static void
CollectOrphans(nsINode* aRemovalRoot,
const nsTArray<nsGenericHTMLFormElement*>& aArray
#ifdef DEBUG
, nsIDOMHTMLFormElement* aThisForm
#endif
)
{
// Put a script blocker around all the notifications we're about to do.
nsAutoScriptBlocker scriptBlocker;
// Walk backwards so that if we remove elements we can just keep iterating
uint32_t length = aArray.Length();
for (uint32_t i = length; i > 0; --i) {
nsGenericHTMLFormElement* node = aArray[i-1];
// Now if MAYBE_ORPHAN_FORM_ELEMENT is not set, that would mean that the
// node is in fact a descendant of the form and hence should stay in the
// form. If it _is_ set, then we need to check whether the node is a
// descendant of aRemovalRoot. If it is, we leave it in the form.
#ifdef DEBUG
bool removed = false;
#endif
if (node->HasFlag(MAYBE_ORPHAN_FORM_ELEMENT)) {
node->UnsetFlags(MAYBE_ORPHAN_FORM_ELEMENT);
if (!nsContentUtils::ContentIsDescendantOf(node, aRemovalRoot)) {
node->ClearForm(true, false);
// When a form control loses its form owner, its state can change.
node->UpdateState(true);
#ifdef DEBUG
removed = true;
#endif
}
}
#ifdef DEBUG
if (!removed) {
nsCOMPtr<nsIDOMHTMLFormElement> form;
node->GetForm(getter_AddRefs(form));
NS_ASSERTION(form == aThisForm, "How did that happen?");
}
#endif /* DEBUG */
}
}
static void
CollectOrphans(nsINode* aRemovalRoot,
const nsTArray<HTMLImageElement*>& aArray
#ifdef DEBUG
, nsIDOMHTMLFormElement* aThisForm
#endif
)
{
// Walk backwards so that if we remove elements we can just keep iterating
uint32_t length = aArray.Length();
for (uint32_t i = length; i > 0; --i) {
HTMLImageElement* node = aArray[i-1];
// Now if MAYBE_ORPHAN_FORM_ELEMENT is not set, that would mean that the
// node is in fact a descendant of the form and hence should stay in the
// form. If it _is_ set, then we need to check whether the node is a
// descendant of aRemovalRoot. If it is, we leave it in the form.
#ifdef DEBUG
bool removed = false;
#endif
if (node->HasFlag(MAYBE_ORPHAN_FORM_ELEMENT)) {
node->UnsetFlags(MAYBE_ORPHAN_FORM_ELEMENT);
if (!nsContentUtils::ContentIsDescendantOf(node, aRemovalRoot)) {
node->ClearForm(true);
#ifdef DEBUG
removed = true;
#endif
}
}
#ifdef DEBUG
if (!removed) {
nsCOMPtr<nsIDOMHTMLFormElement> form = node->GetForm();
NS_ASSERTION(form == aThisForm, "How did that happen?");
}
#endif /* DEBUG */
}
}
void
HTMLFormElement::UnbindFromTree(bool aDeep, bool aNullParent)
{
nsCOMPtr<nsIHTMLDocument> oldDocument = do_QueryInterface(GetUncomposedDoc());
// Mark all of our controls as maybe being orphans
MarkOrphans(mControls->mElements);
MarkOrphans(mControls->mNotInElements);
MarkOrphans(mImageElements);
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
nsINode* ancestor = this;
nsINode* cur;
do {
cur = ancestor->GetParentNode();
if (!cur) {
break;
}
ancestor = cur;
} while (1);
CollectOrphans(ancestor, mControls->mElements
#ifdef DEBUG
, this
#endif
);
CollectOrphans(ancestor, mControls->mNotInElements
#ifdef DEBUG
, this
#endif
);
CollectOrphans(ancestor, mImageElements
#ifdef DEBUG
, this
#endif
);
if (oldDocument) {
oldDocument->RemovedForm();
}
ForgetCurrentSubmission();
}
nsresult
HTMLFormElement::GetEventTargetParent(EventChainPreVisitor& aVisitor)
{
aVisitor.mWantsWillHandleEvent = true;
if (aVisitor.mEvent->mOriginalTarget == static_cast<nsIContent*>(this)) {
uint32_t msg = aVisitor.mEvent->mMessage;
if (msg == eFormSubmit) {
if (mGeneratingSubmit) {
aVisitor.mCanHandle = false;
return NS_OK;
}
mGeneratingSubmit = true;
// let the form know that it needs to defer the submission,
// that means that if there are scripted submissions, the
// latest one will be deferred until after the exit point of the handler.
mDeferSubmission = true;
} else if (msg == eFormReset) {
if (mGeneratingReset) {
aVisitor.mCanHandle = false;
return NS_OK;
}
mGeneratingReset = true;
}
}
return nsGenericHTMLElement::GetEventTargetParent(aVisitor);
}
nsresult
HTMLFormElement::WillHandleEvent(EventChainPostVisitor& aVisitor)
{
// If this is the bubble stage and there is a nested form below us which
// received a submit event we do *not* want to handle the submit event
// for this form too.
if ((aVisitor.mEvent->mMessage == eFormSubmit ||
aVisitor.mEvent->mMessage == eFormReset) &&
aVisitor.mEvent->mFlags.mInBubblingPhase &&
aVisitor.mEvent->mOriginalTarget != static_cast<nsIContent*>(this)) {
aVisitor.mEvent->StopPropagation();
}
return NS_OK;
}
nsresult
HTMLFormElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
{
if (aVisitor.mEvent->mOriginalTarget == static_cast<nsIContent*>(this)) {
EventMessage msg = aVisitor.mEvent->mMessage;
if (msg == eFormSubmit) {
// let the form know not to defer subsequent submissions
mDeferSubmission = false;
}
if (aVisitor.mEventStatus == nsEventStatus_eIgnore) {
switch (msg) {
case eFormReset:
case eFormSubmit: {
if (mPendingSubmission && msg == eFormSubmit) {
// tell the form to forget a possible pending submission.
// the reason is that the script returned true (the event was
// ignored) so if there is a stored submission, it will miss
// the name/value of the submitting element, thus we need
// to forget it and the form element will build a new one
mPendingSubmission = nullptr;
}
DoSubmitOrReset(aVisitor.mEvent, msg);
break;
}
default:
break;
}
} else {
if (msg == eFormSubmit) {
// tell the form to flush a possible pending submission.
// the reason is that the script returned false (the event was
// not ignored) so if there is a stored submission, it needs to
// be submitted immediatelly.
FlushPendingSubmission();
}
}
if (msg == eFormSubmit) {
mGeneratingSubmit = false;
} else if (msg == eFormReset) {
mGeneratingReset = false;
}
}
return NS_OK;
}
nsresult
HTMLFormElement::DoSubmitOrReset(WidgetEvent* aEvent,
EventMessage aMessage)
{
// Make sure the presentation is up-to-date
nsIDocument* doc = GetComposedDoc();
if (doc) {
doc->FlushPendingNotifications(FlushType::ContentAndNotify);
}
// JBK Don't get form frames anymore - bug 34297
// Submit or Reset the form
if (eFormReset == aMessage) {
return DoReset();
}
if (eFormSubmit == aMessage) {
// Don't submit if we're not in a document or if we're in
// a sandboxed frame and form submit is disabled.
if (!doc || (doc->GetSandboxFlags() & SANDBOXED_FORMS)) {
return NS_OK;
}
return DoSubmit(aEvent);
}
MOZ_ASSERT(false);
return NS_OK;
}
nsresult
HTMLFormElement::DoReset()
{
mEverTriedInvalidSubmit = false;
// JBK walk the elements[] array instead of form frame controls - bug 34297
uint32_t numElements = GetElementCount();
for (uint32_t elementX = 0; elementX < numElements; ++elementX) {
// Hold strong ref in case the reset does something weird
nsCOMPtr<nsIFormControl> controlNode = GetElementAt(elementX);
if (controlNode) {
controlNode->Reset();
}
}
return NS_OK;
}
#define NS_ENSURE_SUBMIT_SUCCESS(rv) \
if (NS_FAILED(rv)) { \
ForgetCurrentSubmission(); \
return rv; \
}
nsresult
HTMLFormElement::DoSubmit(WidgetEvent* aEvent)
{
NS_ASSERTION(GetComposedDoc(), "Should never get here without a current doc");
if (mIsSubmitting) {
NS_WARNING("Preventing double form submission");
// XXX Should this return an error?
return NS_OK;
}
// Mark us as submitting so that we don't try to submit again
mIsSubmitting = true;
NS_ASSERTION(!mWebProgress && !mSubmittingRequest, "Web progress / submitting request should not exist here!");
nsAutoPtr<HTMLFormSubmission> submission;
//
// prepare the submission object
//
nsresult rv = BuildSubmission(getter_Transfers(submission), aEvent);
if (NS_FAILED(rv)) {
mIsSubmitting = false;
return rv;
}
// XXXbz if the script global is that for an sXBL/XBL2 doc, it won't
// be a window...
nsPIDOMWindowOuter *window = OwnerDoc()->GetWindow();
if (window) {
mSubmitPopupState = window->GetPopupControlState();
} else {
mSubmitPopupState = openAbused;
}
mSubmitInitiatedFromUserInput = EventStateManager::IsHandlingUserInput();
if(mDeferSubmission) {
// we are in an event handler, JS submitted so we have to
// defer this submission. let's remember it and return
// without submitting
mPendingSubmission = submission;
// ensure reentrancy
mIsSubmitting = false;
return NS_OK;
}
//
// perform the submission
//
return SubmitSubmission(submission);
}
nsresult
HTMLFormElement::BuildSubmission(HTMLFormSubmission** aFormSubmission,
WidgetEvent* aEvent)
{
NS_ASSERTION(!mPendingSubmission, "tried to build two submissions!");
// Get the originating frame (failure is non-fatal)
nsGenericHTMLElement* originatingElement = nullptr;
if (aEvent) {
InternalFormEvent* formEvent = aEvent->AsFormEvent();
if (formEvent) {
nsIContent* originator = formEvent->mOriginator;
if (originator) {
if (!originator->IsHTMLElement()) {
return NS_ERROR_UNEXPECTED;
}
originatingElement = static_cast<nsGenericHTMLElement*>(originator);
}
}
}
nsresult rv;
//
// Get the submission object
//
rv = HTMLFormSubmission::GetFromForm(this, originatingElement,
aFormSubmission);
NS_ENSURE_SUBMIT_SUCCESS(rv);
//
// Dump the data into the submission object
//
rv = WalkFormElements(*aFormSubmission);
NS_ENSURE_SUBMIT_SUCCESS(rv);
return NS_OK;
}
nsresult
HTMLFormElement::SubmitSubmission(HTMLFormSubmission* aFormSubmission)
{
nsresult rv;
Element* originatingElement = aFormSubmission->GetOriginatingElement();
//
// Get the action and target
//
nsCOMPtr<nsIURI> actionURI;
rv = GetActionURL(getter_AddRefs(actionURI), originatingElement);
NS_ENSURE_SUBMIT_SUCCESS(rv);
if (!actionURI) {
mIsSubmitting = false;
return NS_OK;
}
// If there is no link handler, then we won't actually be able to submit.
nsIDocument* doc = GetComposedDoc();
nsCOMPtr<nsISupports> container = doc ? doc->GetContainer() : nullptr;
nsCOMPtr<nsILinkHandler> linkHandler(do_QueryInterface(container));
if (!linkHandler || IsEditable()) {
mIsSubmitting = false;
return NS_OK;
}
// javascript URIs are not really submissions; they just call a function.
// Also, they may synchronously call submit(), and we want them to be able to
// do so while still disallowing other double submissions. (Bug 139798)
// Note that any other URI types that are of equivalent type should also be
// added here.
// XXXbz this is a mess. The real issue here is that nsJSChannel sets the
// LOAD_BACKGROUND flag, so doesn't notify us, compounded by the fact that
// the JS executes before we forget the submission in OnStateChange on
// STATE_STOP. As a result, we have to make sure that we simply pretend
// we're not submitting when submitting to a JS URL. That's kinda bogus, but
// there we are.
bool schemeIsJavaScript = false;
if (NS_SUCCEEDED(actionURI->SchemeIs("javascript", &schemeIsJavaScript)) &&
schemeIsJavaScript) {
mIsSubmitting = false;
}
// The target is the originating element formtarget attribute if the element
// is a submit control and has such an attribute.
// Otherwise, the target is the form owner's target attribute,
// if it has such an attribute.
// Finally, if one of the child nodes of the head element is a base element
// with a target attribute, then the value of the target attribute of the
// first such base element; or, if there is no such element, the empty string.
nsAutoString target;
if (!(originatingElement && originatingElement->GetAttr(kNameSpaceID_None,
nsGkAtoms::formtarget,
target)) &&
!GetAttr(kNameSpaceID_None, nsGkAtoms::target, target)) {
GetBaseTarget(target);
}
//
// Notify observers of submit
//
bool cancelSubmit = false;
if (mNotifiedObservers) {
cancelSubmit = mNotifiedObserversResult;
} else {
rv = NotifySubmitObservers(actionURI, &cancelSubmit, true);
NS_ENSURE_SUBMIT_SUCCESS(rv);
}
if (cancelSubmit) {
mIsSubmitting = false;
return NS_OK;
}
cancelSubmit = false;
rv = NotifySubmitObservers(actionURI, &cancelSubmit, false);
NS_ENSURE_SUBMIT_SUCCESS(rv);
if (cancelSubmit) {
mIsSubmitting = false;
return NS_OK;
}
//
// Submit
//
nsCOMPtr<nsIDocShell> docShell;
{
nsAutoPopupStatePusher popupStatePusher(mSubmitPopupState);
AutoHandlingUserInputStatePusher userInpStatePusher(
mSubmitInitiatedFromUserInput,
nullptr, doc);
nsCOMPtr<nsIInputStream> postDataStream;
int64_t postDataStreamLength = -1;
rv = aFormSubmission->GetEncodedSubmission(actionURI,
getter_AddRefs(postDataStream),
&postDataStreamLength);
NS_ENSURE_SUBMIT_SUCCESS(rv);
rv = linkHandler->OnLinkClickSync(this, actionURI,
target.get(),
VoidString(),
postDataStream, postDataStreamLength,
nullptr, false,
getter_AddRefs(docShell),
getter_AddRefs(mSubmittingRequest));
NS_ENSURE_SUBMIT_SUCCESS(rv);
}
// Even if the submit succeeds, it's possible for there to be no docshell
// or request; for example, if it's to a named anchor within the same page
// the submit will not really do anything.
if (docShell) {
// If the channel is pending, we have to listen for web progress.
bool pending = false;
mSubmittingRequest->IsPending(&pending);
if (pending && !schemeIsJavaScript) {
nsCOMPtr<nsIWebProgress> webProgress = do_GetInterface(docShell);
NS_ASSERTION(webProgress, "nsIDocShell not converted to nsIWebProgress!");
rv = webProgress->AddProgressListener(this, nsIWebProgress::NOTIFY_STATE_ALL);
NS_ENSURE_SUBMIT_SUCCESS(rv);
mWebProgress = do_GetWeakReference(webProgress);
NS_ASSERTION(mWebProgress, "can't hold weak ref to webprogress!");
} else {
ForgetCurrentSubmission();
}
} else {
ForgetCurrentSubmission();
}
return rv;
}
nsresult
HTMLFormElement::DoSecureToInsecureSubmitCheck(nsIURI* aActionURL,
bool* aCancelSubmit)
{
*aCancelSubmit = false;
// Only ask the user about posting from a secure URI to an insecure URI if
// this element is in the root document. When this is not the case, the mixed
// content blocker will take care of security for us.
nsIDocument* parent = OwnerDoc()->GetParentDocument();
bool isRootDocument = (!parent || nsContentUtils::IsChromeDoc(parent));
if (!isRootDocument) {
return NS_OK;
}
nsIPrincipal* principal = NodePrincipal();
if (!principal) {
*aCancelSubmit = true;
return NS_OK;
}
nsCOMPtr<nsIURI> principalURI;
nsresult rv = principal->GetURI(getter_AddRefs(principalURI));
if (NS_FAILED(rv)) {
return rv;
}
if (!principalURI) {
principalURI = OwnerDoc()->GetDocumentURI();
}
bool formIsHTTPS;
rv = principalURI->SchemeIs("https", &formIsHTTPS);
if (NS_FAILED(rv)) {
return rv;
}
bool actionIsHTTPS;
rv = aActionURL->SchemeIs("https", &actionIsHTTPS);
if (NS_FAILED(rv)) {
return rv;
}
bool actionIsJS;
rv = aActionURL->SchemeIs("javascript", &actionIsJS);
if (NS_FAILED(rv)) {
return rv;
}
if (!formIsHTTPS || actionIsHTTPS || actionIsJS) {
return NS_OK;
}
if (nsMixedContentBlocker::IsPotentiallyTrustworthyLoopbackURL(aActionURL)) {
return NS_OK;
}
nsCOMPtr<nsPIDOMWindowOuter> window = OwnerDoc()->GetWindow();
if (!window) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDocShell> docShell = window->GetDocShell();
if (!docShell) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrompt> prompt = do_GetInterface(docShell);
if (!prompt) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIStringBundle> stringBundle;
nsCOMPtr<nsIStringBundleService> stringBundleService =
mozilla::services::GetStringBundleService();
if (!stringBundleService) {
return NS_ERROR_FAILURE;
}
rv = stringBundleService->CreateBundle(
"chrome://global/locale/browser.properties",
getter_AddRefs(stringBundle));
if (NS_FAILED(rv)) {
return rv;
}
nsAutoString title;
nsAutoString message;
nsAutoString cont;
stringBundle->GetStringFromName(
"formPostSecureToInsecureWarning.title", title);
stringBundle->GetStringFromName(
"formPostSecureToInsecureWarning.message", message);
stringBundle->GetStringFromName(
"formPostSecureToInsecureWarning.continue", cont);
int32_t buttonPressed;
bool checkState = false; // this is unused (ConfirmEx requires this parameter)
rv = prompt->ConfirmEx(title.get(), message.get(),
(nsIPrompt::BUTTON_TITLE_IS_STRING *
nsIPrompt::BUTTON_POS_0) +
(nsIPrompt::BUTTON_TITLE_CANCEL *
nsIPrompt::BUTTON_POS_1),
cont.get(), nullptr, nullptr, nullptr,
&checkState, &buttonPressed);
if (NS_FAILED(rv)) {
return rv;
}
*aCancelSubmit = (buttonPressed == 1);
uint32_t telemetryBucket =
nsISecurityUITelemetry::WARNING_CONFIRM_POST_TO_INSECURE_FROM_SECURE;
mozilla::Telemetry::Accumulate(mozilla::Telemetry::SECURITY_UI,
telemetryBucket);
if (!*aCancelSubmit) {
// The user opted to continue, so note that in the next telemetry bucket.
mozilla::Telemetry::Accumulate(mozilla::Telemetry::SECURITY_UI,
telemetryBucket + 1);
}
return NS_OK;
}
nsresult
HTMLFormElement::NotifySubmitObservers(nsIURI* aActionURL,
bool* aCancelSubmit,
bool aEarlyNotify)
{
// If this is the first form, bring alive the first form submit
// category observers
if (!gFirstFormSubmitted) {
gFirstFormSubmitted = true;
NS_CreateServicesFromCategory(NS_FIRST_FORMSUBMIT_CATEGORY,
nullptr,
NS_FIRST_FORMSUBMIT_CATEGORY);
}
if (!aEarlyNotify) {
nsresult rv = DoSecureToInsecureSubmitCheck(aActionURL, aCancelSubmit);
if (NS_FAILED(rv)) {
return rv;
}
if (*aCancelSubmit) {
return NS_OK;
}
}
// Notify observers that the form is being submitted.
nsCOMPtr<nsIObserverService> service =
mozilla::services::GetObserverService();
if (!service)
return NS_ERROR_FAILURE;
nsCOMPtr<nsISimpleEnumerator> theEnum;
nsresult rv = service->EnumerateObservers(aEarlyNotify ?
NS_EARLYFORMSUBMIT_SUBJECT :
NS_FORMSUBMIT_SUBJECT,
getter_AddRefs(theEnum));
NS_ENSURE_SUCCESS(rv, rv);
if (theEnum) {
nsCOMPtr<nsISupports> inst;
*aCancelSubmit = false;
// XXXbz what do the submit observers actually want? The window
// of the document this is shown in? Or something else?
// sXBL/XBL2 issue
nsCOMPtr<nsPIDOMWindowOuter> window = OwnerDoc()->GetWindow();
bool loop = true;
while (NS_SUCCEEDED(theEnum->HasMoreElements(&loop)) && loop) {
theEnum->GetNext(getter_AddRefs(inst));
nsCOMPtr<nsIFormSubmitObserver> formSubmitObserver(
do_QueryInterface(inst));
if (formSubmitObserver) {
rv = formSubmitObserver->Notify(this,
window ? window->GetCurrentInnerWindow() : nullptr,
aActionURL,
aCancelSubmit);
NS_ENSURE_SUCCESS(rv, rv);
}
if (*aCancelSubmit) {
return NS_OK;
}
}
}
return rv;
}
nsresult
HTMLFormElement::WalkFormElements(HTMLFormSubmission* aFormSubmission)
{
// This shouldn't be called recursively, so use a rather large value
// for the preallocated buffer.
AutoTArray<RefPtr<nsGenericHTMLFormElement>, 100> sortedControls;
nsresult rv = mControls->GetSortedControls(sortedControls);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t len = sortedControls.Length();
//
// Walk the list of nodes and call SubmitNamesValues() on the controls
//
for (uint32_t i = 0; i < len; ++i) {
// Tell the control to submit its name/value pairs to the submission
sortedControls[i]->SubmitNamesValues(aFormSubmission);
}
return NS_OK;
}
// nsIForm
NS_IMETHODIMP_(uint32_t)
HTMLFormElement::GetElementCount() const
{
return mControls->Length();
}
Element*
HTMLFormElement::IndexedGetter(uint32_t aIndex, bool &aFound)
{
Element* element = mControls->mElements.SafeElementAt(aIndex, nullptr);
aFound = element != nullptr;
return element;
}
NS_IMETHODIMP_(nsIFormControl*)
HTMLFormElement::GetElementAt(int32_t aIndex) const
{
return mControls->mElements.SafeElementAt(aIndex, nullptr);
}
/**
* Compares the position of aControl1 and aControl2 in the document
* @param aControl1 First control to compare.
* @param aControl2 Second control to compare.
* @param aForm Parent form of the controls.
* @return < 0 if aControl1 is before aControl2,
* > 0 if aControl1 is after aControl2,
* 0 otherwise
*/
/* static */ int32_t
HTMLFormElement::CompareFormControlPosition(Element* aElement1,
Element* aElement2,
const nsIContent* aForm)
{
NS_ASSERTION(aElement1 != aElement2, "Comparing a form control to itself");
// If an element has a @form, we can assume it *might* be able to not have
// a parent and still be in the form.
NS_ASSERTION((aElement1->HasAttr(kNameSpaceID_None, nsGkAtoms::form) ||
aElement1->GetParent()) &&
(aElement2->HasAttr(kNameSpaceID_None, nsGkAtoms::form) ||
aElement2->GetParent()),
"Form controls should always have parents");
// If we pass aForm, we are assuming both controls are form descendants which
// is not always the case. This function should work but maybe slower.
// However, checking if both elements are form descendants may be slow too...
// TODO: remove the prevent asserts fix, see bug 598468.
#ifdef DEBUG
nsLayoutUtils::gPreventAssertInCompareTreePosition = true;
int32_t rVal = nsLayoutUtils::CompareTreePosition(aElement1, aElement2, aForm);
nsLayoutUtils::gPreventAssertInCompareTreePosition = false;
return rVal;
#else // DEBUG
return nsLayoutUtils::CompareTreePosition(aElement1, aElement2, aForm);
#endif // DEBUG
}
#ifdef DEBUG
/**
* Checks that all form elements are in document order. Asserts if any pair of
* consecutive elements are not in increasing document order.
*
* @param aControls List of form controls to check.
* @param aForm Parent form of the controls.
*/
/* static */ void
HTMLFormElement::AssertDocumentOrder(
const nsTArray<nsGenericHTMLFormElement*>& aControls, nsIContent* aForm)
{
// TODO: remove the return statement with bug 598468.
// This is done to prevent asserts in some edge cases.
return;
// Only iterate if aControls is not empty, since otherwise
// |aControls.Length() - 1| will be a very large unsigned number... not what
// we want here.
if (!aControls.IsEmpty()) {
for (uint32_t i = 0; i < aControls.Length() - 1; ++i) {
NS_ASSERTION(CompareFormControlPosition(aControls[i], aControls[i + 1],
aForm) < 0,
"Form controls not ordered correctly");
}
}
}
/**
* Copy of the above function, but with RefPtrs.
*
* @param aControls List of form controls to check.
* @param aForm Parent form of the controls.
*/
/* static */ void
HTMLFormElement::AssertDocumentOrder(
const nsTArray<RefPtr<nsGenericHTMLFormElement>>& aControls, nsIContent* aForm)
{
// TODO: remove the return statement with bug 598468.
// This is done to prevent asserts in some edge cases.
return;
// Only iterate if aControls is not empty, since otherwise
// |aControls.Length() - 1| will be a very large unsigned number... not what
// we want here.
if (!aControls.IsEmpty()) {
for (uint32_t i = 0; i < aControls.Length() - 1; ++i) {
NS_ASSERTION(CompareFormControlPosition(aControls[i], aControls[i + 1],
aForm) < 0,
"Form controls not ordered correctly");
}
}
}
#endif
void
HTMLFormElement::PostPasswordEvent()
{
// Don't fire another add event if we have a pending add event.
if (mFormPasswordEventDispatcher.get()) {
return;
}
mFormPasswordEventDispatcher =
new AsyncEventDispatcher(this, NS_LITERAL_STRING("DOMFormHasPassword"),
true, true);
mFormPasswordEventDispatcher->PostDOMEvent();
}
namespace {
struct FormComparator
{
Element* const mChild;
HTMLFormElement* const mForm;
FormComparator(Element* aChild, HTMLFormElement* aForm)
: mChild(aChild), mForm(aForm) {}
int operator()(Element* aElement) const {
return HTMLFormElement::CompareFormControlPosition(mChild, aElement, mForm);
}
};
} // namespace
// This function return true if the element, once appended, is the last one in
// the array.
template<typename ElementType>
static bool
AddElementToList(nsTArray<ElementType*>& aList, ElementType* aChild,
HTMLFormElement* aForm)
{
NS_ASSERTION(aList.IndexOf(aChild) == aList.NoIndex,
"aChild already in aList");
const uint32_t count = aList.Length();
ElementType* element;
bool lastElement = false;
// Optimize most common case where we insert at the end.
int32_t position = -1;
if (count > 0) {
element = aList[count - 1];
position =
HTMLFormElement::CompareFormControlPosition(aChild, element, aForm);
}
// If this item comes after the last element, or the elements array is
// empty, we append to the end. Otherwise, we do a binary search to
// determine where the element should go.
if (position >= 0 || count == 0) {
// WEAK - don't addref
aList.AppendElement(aChild);
lastElement = true;
}
else {
size_t idx;
BinarySearchIf(aList, 0, count, FormComparator(aChild, aForm), &idx);
// WEAK - don't addref
aList.InsertElementAt(idx, aChild);
}
return lastElement;
}
nsresult
HTMLFormElement::AddElement(nsGenericHTMLFormElement* aChild,
bool aUpdateValidity, bool aNotify)
{
// If an element has a @form, we can assume it *might* be able to not have
// a parent and still be in the form.
NS_ASSERTION(aChild->HasAttr(kNameSpaceID_None, nsGkAtoms::form) ||
aChild->GetParent(),
"Form control should have a parent");
// Determine whether to add the new element to the elements or
// the not-in-elements list.
bool childInElements = HTMLFormControlsCollection::ShouldBeInElements(aChild);
nsTArray<nsGenericHTMLFormElement*>& controlList = childInElements ?
mControls->mElements : mControls->mNotInElements;
bool lastElement = AddElementToList(controlList, aChild, this);
#ifdef DEBUG
AssertDocumentOrder(controlList, this);
#endif
int32_t type = aChild->ControlType();
//
// If it is a password control, and the password manager has not yet been
// initialized, initialize the password manager
//
if (type == NS_FORM_INPUT_PASSWORD) {
if (!gPasswordManagerInitialized) {
gPasswordManagerInitialized = true;
NS_CreateServicesFromCategory(NS_PASSWORDMANAGER_CATEGORY,
nullptr,
NS_PASSWORDMANAGER_CATEGORY);
}
PostPasswordEvent();
}
// Default submit element handling
if (aChild->IsSubmitControl()) {
// Update mDefaultSubmitElement, mFirstSubmitInElements,
// mFirstSubmitNotInElements.
nsGenericHTMLFormElement** firstSubmitSlot =
childInElements ? &mFirstSubmitInElements : &mFirstSubmitNotInElements;
// The new child is the new first submit in its list if the firstSubmitSlot
// is currently empty or if the child is before what's currently in the
// slot. Note that if we already have a control in firstSubmitSlot and
// we're appending this element can't possibly replace what's currently in
// the slot. Also note that aChild can't become the mDefaultSubmitElement
// unless it replaces what's in the slot. If it _does_ replace what's in
// the slot, it becomes the default submit if either the default submit is
// what's in the slot or the child is earlier than the default submit.
nsGenericHTMLFormElement* oldDefaultSubmit = mDefaultSubmitElement;
if (!*firstSubmitSlot ||
(!lastElement &&
CompareFormControlPosition(aChild, *firstSubmitSlot, this) < 0)) {
// Update mDefaultSubmitElement if it's currently in a valid state.
// Valid state means either non-null or null because there are in fact
// no submit elements around.
if ((mDefaultSubmitElement ||
(!mFirstSubmitInElements && !mFirstSubmitNotInElements)) &&
(*firstSubmitSlot == mDefaultSubmitElement ||
CompareFormControlPosition(aChild,
mDefaultSubmitElement, this) < 0)) {
mDefaultSubmitElement = aChild;
}
*firstSubmitSlot = aChild;
}
MOZ_ASSERT(mDefaultSubmitElement == mFirstSubmitInElements ||
mDefaultSubmitElement == mFirstSubmitNotInElements ||
!mDefaultSubmitElement,
"What happened here?");
// Notify that the state of the previous default submit element has changed
// if the element which is the default submit element has changed. The new
// default submit element is responsible for its own state update.
if (oldDefaultSubmit && oldDefaultSubmit != mDefaultSubmitElement) {
oldDefaultSubmit->UpdateState(aNotify);
}
}
// If the element is subject to constraint validaton and is invalid, we need
// to update our internal counter.
if (aUpdateValidity) {
nsCOMPtr<nsIConstraintValidation> cvElmt = do_QueryObject(aChild);
if (cvElmt &&
cvElmt->IsCandidateForConstraintValidation() && !cvElmt->IsValid()) {
UpdateValidity(false);
}
}
// Notify the radio button it's been added to a group
// This has to be done _after_ UpdateValidity() call to prevent the element
// being count twice.
if (type == NS_FORM_INPUT_RADIO) {
RefPtr<HTMLInputElement> radio =
static_cast<HTMLInputElement*>(aChild);
radio->AddedToRadioGroup();
}
return NS_OK;
}
nsresult
HTMLFormElement::AddElementToTable(nsGenericHTMLFormElement* aChild,
const nsAString& aName)
{
return mControls->AddElementToTable(aChild, aName);
}
nsresult
HTMLFormElement::RemoveElement(nsGenericHTMLFormElement* aChild,
bool aUpdateValidity)
{
RemoveElementFromPastNamesMap(aChild);
//
// Remove it from the radio group if it's a radio button
//
nsresult rv = NS_OK;
if (aChild->ControlType() == NS_FORM_INPUT_RADIO) {
RefPtr<HTMLInputElement> radio =
static_cast<HTMLInputElement*>(aChild);
radio->WillRemoveFromRadioGroup();
}
// Determine whether to remove the child from the elements list
// or the not in elements list.
bool childInElements = HTMLFormControlsCollection::ShouldBeInElements(aChild);
nsTArray<nsGenericHTMLFormElement*>& controls = childInElements ?
mControls->mElements : mControls->mNotInElements;
// Find the index of the child. This will be used later if necessary
// to find the default submit.
size_t index = controls.IndexOf(aChild);
NS_ENSURE_STATE(index != controls.NoIndex);
controls.RemoveElementAt(index);
// Update our mFirstSubmit* values.
nsGenericHTMLFormElement** firstSubmitSlot =
childInElements ? &mFirstSubmitInElements : &mFirstSubmitNotInElements;
if (aChild == *firstSubmitSlot) {
*firstSubmitSlot = nullptr;
// We are removing the first submit in this list, find the new first submit
uint32_t length = controls.Length();
for (uint32_t i = index; i < length; ++i) {
nsGenericHTMLFormElement* currentControl = controls[i];
if (currentControl->IsSubmitControl()) {
*firstSubmitSlot = currentControl;
break;
}
}
}
if (aChild == mDefaultSubmitElement) {
// Need to reset mDefaultSubmitElement. Do this asynchronously so
// that we're not doing it while the DOM is in flux.
mDefaultSubmitElement = nullptr;
nsContentUtils::AddScriptRunner(new RemoveElementRunnable(this));
// Note that we don't need to notify on the old default submit (which is
// being removed) because it's either being removed from the DOM or
// changing attributes in a way that makes it responsible for sending its
// own notifications.
}
// If the element was subject to constraint validaton and is invalid, we need
// to update our internal counter.
if (aUpdateValidity) {
nsCOMPtr<nsIConstraintValidation> cvElmt = do_QueryObject(aChild);
if (cvElmt &&
cvElmt->IsCandidateForConstraintValidation() && !cvElmt->IsValid()) {
UpdateValidity(true);
}
}
return rv;
}
void
HTMLFormElement::HandleDefaultSubmitRemoval()
{
if (mDefaultSubmitElement) {
// Already got reset somehow; nothing else to do here
return;
}
if (!mFirstSubmitNotInElements) {
mDefaultSubmitElement = mFirstSubmitInElements;
} else if (!mFirstSubmitInElements) {
mDefaultSubmitElement = mFirstSubmitNotInElements;
} else {
NS_ASSERTION(mFirstSubmitInElements != mFirstSubmitNotInElements,
"How did that happen?");
// Have both; use the earlier one
mDefaultSubmitElement =
CompareFormControlPosition(mFirstSubmitInElements,
mFirstSubmitNotInElements, this) < 0 ?
mFirstSubmitInElements : mFirstSubmitNotInElements;
}
MOZ_ASSERT(mDefaultSubmitElement == mFirstSubmitInElements ||
mDefaultSubmitElement == mFirstSubmitNotInElements,
"What happened here?");
// Notify about change if needed.
if (mDefaultSubmitElement) {
mDefaultSubmitElement->UpdateState(true);
}
}
nsresult
HTMLFormElement::RemoveElementFromTableInternal(
nsInterfaceHashtable<nsStringHashKey,nsISupports>& aTable,
nsIContent* aChild, const nsAString& aName)
{
auto entry = aTable.Lookup(aName);
if (!entry) {
return NS_OK;
}
// Single element in the hash, just remove it if it's the one
// we're trying to remove...
if (entry.Data() == aChild) {
entry.Remove();
++mExpandoAndGeneration.generation;
return NS_OK;
}
nsCOMPtr<nsIContent> content(do_QueryInterface(entry.Data()));
if (content) {
return NS_OK;
}
// If it's not a content node then it must be a RadioNodeList.
MOZ_ASSERT(nsCOMPtr<RadioNodeList>(do_QueryInterface(entry.Data())));
auto* list = static_cast<RadioNodeList*>(entry.Data().get());
list->RemoveElement(aChild);
uint32_t length = 0;
list->GetLength(&length);
if (!length) {
// If the list is empty we remove if from our hash, this shouldn't
// happen tho
entry.Remove();
++mExpandoAndGeneration.generation;
} else if (length == 1) {
// Only one element left, replace the list in the hash with the
// single element.
nsIContent* node = list->Item(0);
if (node) {
entry.Data() = node;
}
}
return NS_OK;
}
nsresult
HTMLFormElement::RemoveElementFromTable(nsGenericHTMLFormElement* aElement,
const nsAString& aName)
{
return mControls->RemoveElementFromTable(aElement, aName);
}
already_AddRefed<nsISupports>
HTMLFormElement::NamedGetter(const nsAString& aName, bool &aFound)
{
aFound = true;
nsCOMPtr<nsISupports> result = DoResolveName(aName, true);
if (result) {
AddToPastNamesMap(aName, result);
return result.forget();
}
result = mImageNameLookupTable.GetWeak(aName);
if (result) {
AddToPastNamesMap(aName, result);
return result.forget();
}
result = mPastNameLookupTable.GetWeak(aName);
if (result) {
return result.forget();
}
aFound = false;
return nullptr;
}
void
HTMLFormElement::GetSupportedNames(nsTArray<nsString >& aRetval)
{
// TODO https://github.com/whatwg/html/issues/1731
}
already_AddRefed<nsISupports>
HTMLFormElement::FindNamedItem(const nsAString& aName,
nsWrapperCache** aCache)
{
// FIXME Get the wrapper cache from DoResolveName.
bool found;
nsCOMPtr<nsISupports> result = NamedGetter(aName, found);
if (result) {
*aCache = nullptr;
return result.forget();
}
return nullptr;
}
already_AddRefed<nsISupports>
HTMLFormElement::DoResolveName(const nsAString& aName,
bool aFlushContent)
{
nsCOMPtr<nsISupports> result =
mControls->NamedItemInternal(aName, aFlushContent);
return result.forget();
}
void
HTMLFormElement::OnSubmitClickBegin(Element* aOriginatingElement)
{
mDeferSubmission = true;
// Prepare to run NotifySubmitObservers early before the
// scripts on the page get to modify the form data, possibly
// throwing off any password manager. (bug 257781)
nsCOMPtr<nsIURI> actionURI;
nsresult rv;
rv = GetActionURL(getter_AddRefs(actionURI), aOriginatingElement);
if (NS_FAILED(rv) || !actionURI)
return;
// Notify observers of submit if the form is valid.
// TODO: checking for mInvalidElementsCount is a temporary fix that should be
// removed with bug 610402.
if (mInvalidElementsCount == 0) {
bool cancelSubmit = false;
rv = NotifySubmitObservers(actionURI, &cancelSubmit, true);
if (NS_SUCCEEDED(rv)) {
mNotifiedObservers = true;
mNotifiedObserversResult = cancelSubmit;
}
}
}
void
HTMLFormElement::OnSubmitClickEnd()
{
mDeferSubmission = false;
}
void
HTMLFormElement::FlushPendingSubmission()
{
if (mPendingSubmission) {
// Transfer owning reference so that the submissioin doesn't get deleted
// if we reenter
nsAutoPtr<HTMLFormSubmission> submission = Move(mPendingSubmission);
SubmitSubmission(submission);
}
}
void
HTMLFormElement::GetAction(nsString& aValue)
{
if (!GetAttr(kNameSpaceID_None, nsGkAtoms::action, aValue) ||
aValue.IsEmpty()) {
nsIDocument* document = OwnerDoc();
nsIURI* docURI = document->GetDocumentURI();
if (docURI) {
nsAutoCString spec;
nsresult rv = docURI->GetSpec(spec);
if (NS_FAILED(rv)) {
return;
}
CopyUTF8toUTF16(spec, aValue);
}
} else {
GetURIAttr(nsGkAtoms::action, nullptr, aValue);
}
}
nsresult
HTMLFormElement::GetActionURL(nsIURI** aActionURL,
Element* aOriginatingElement)
{
nsresult rv = NS_OK;
*aActionURL = nullptr;
//
// Grab the URL string
//
// If the originating element is a submit control and has the formaction
// attribute specified, it should be used. Otherwise, the action attribute
// from the form element should be used.
//
nsAutoString action;
if (aOriginatingElement &&
aOriginatingElement->HasAttr(kNameSpaceID_None, nsGkAtoms::formaction)) {
#ifdef DEBUG
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(aOriginatingElement);
NS_ASSERTION(formControl && formControl->IsSubmitControl(),
"The originating element must be a submit form control!");
#endif // DEBUG
nsCOMPtr<nsIDOMHTMLInputElement> inputElement = do_QueryInterface(aOriginatingElement);
if (inputElement) {
inputElement->GetFormAction(action);
} else {
auto buttonElement = HTMLButtonElement::FromContent(aOriginatingElement);
if (buttonElement) {
buttonElement->GetFormAction(action);
} else {
NS_ERROR("Originating element must be an input or button element!");
return NS_ERROR_UNEXPECTED;
}
}
} else {
GetAction(action);
}
//
// Form the full action URL
//
// Get the document to form the URL.
// We'll also need it later to get the DOM window when notifying form submit
// observers (bug 33203)
if (!IsInUncomposedDoc()) {
return NS_OK; // No doc means don't submit, see Bug 28988
}
// Get base URL
nsIDocument *document = OwnerDoc();
nsIURI *docURI = document->GetDocumentURI();
NS_ENSURE_TRUE(docURI, NS_ERROR_UNEXPECTED);
// If an action is not specified and we are inside
// a HTML document then reload the URL. This makes us
// compatible with 4.x browsers.
// If we are in some other type of document such as XML or
// XUL, do nothing. This prevents undesirable reloading of
// a document inside XUL.
nsCOMPtr<nsIURI> actionURL;
if (action.IsEmpty()) {
nsCOMPtr<nsIHTMLDocument> htmlDoc(do_QueryInterface(document));
if (!htmlDoc) {
// Must be a XML, XUL or other non-HTML document type
// so do nothing.
return NS_OK;
}
rv = docURI->Clone(getter_AddRefs(actionURL));
NS_ENSURE_SUCCESS(rv, rv);
} else {
nsCOMPtr<nsIURI> baseURL = GetBaseURI();
NS_ASSERTION(baseURL, "No Base URL found in Form Submit!\n");
if (!baseURL) {
return NS_OK; // No base URL -> exit early, see Bug 30721
}
rv = NS_NewURI(getter_AddRefs(actionURL), action, nullptr, baseURL);
NS_ENSURE_SUCCESS(rv, rv);
}
//
// Verify the URL should be reached
//
// Get security manager, check to see if access to action URI is allowed.
//
nsIScriptSecurityManager *securityManager =
nsContentUtils::GetSecurityManager();
rv = securityManager->
CheckLoadURIWithPrincipal(NodePrincipal(), actionURL,
nsIScriptSecurityManager::STANDARD);
NS_ENSURE_SUCCESS(rv, rv);
// Check if CSP allows this form-action
nsCOMPtr<nsIContentSecurityPolicy> csp;
rv = NodePrincipal()->GetCsp(getter_AddRefs(csp));
NS_ENSURE_SUCCESS(rv, rv);
if (csp) {
bool permitsFormAction = true;
// form-action is only enforced if explicitly defined in the
// policy - do *not* consult default-src, see:
// http://www.w3.org/TR/CSP2/#directive-default-src
rv = csp->Permits(actionURL, nsIContentSecurityPolicy::FORM_ACTION_DIRECTIVE,
true, &permitsFormAction);
NS_ENSURE_SUCCESS(rv, rv);
if (!permitsFormAction) {
return NS_ERROR_CSP_FORM_ACTION_VIOLATION;
}
}
// Potentially the page uses the CSP directive 'upgrade-insecure-requests'. In
// such a case we have to upgrade the action url from http:// to https://.
// If the actionURL is not http, then there is nothing to do.
bool isHttpScheme = false;
rv = actionURL->SchemeIs("http", &isHttpScheme);
NS_ENSURE_SUCCESS(rv, rv);
if (isHttpScheme && document->GetUpgradeInsecureRequests(false)) {
// let's use the old specification before the upgrade for logging
nsAutoCString spec;
rv = actionURL->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
NS_ConvertUTF8toUTF16 reportSpec(spec);
// upgrade the actionURL from http:// to use https://
nsCOMPtr<nsIURI> upgradedActionURL;
rv = NS_GetSecureUpgradedURI(actionURL, getter_AddRefs(upgradedActionURL));
NS_ENSURE_SUCCESS(rv, rv);
actionURL = upgradedActionURL.forget();
// let's log a message to the console that we are upgrading a request
nsAutoCString scheme;
rv = actionURL->GetScheme(scheme);
NS_ENSURE_SUCCESS(rv, rv);
NS_ConvertUTF8toUTF16 reportScheme(scheme);
const char16_t* params[] = { reportSpec.get(), reportScheme.get() };
CSP_LogLocalizedStr("upgradeInsecureRequest",
params, ArrayLength(params),
EmptyString(), // aSourceFile
EmptyString(), // aScriptSample
0, // aLineNumber
0, // aColumnNumber
nsIScriptError::warningFlag, "CSP",
document->InnerWindowID());
}
//
// Assign to the output
//
actionURL.forget(aActionURL);
return rv;
}
NS_IMETHODIMP_(nsIFormControl*)
HTMLFormElement::GetDefaultSubmitElement() const
{
NS_PRECONDITION(mDefaultSubmitElement == mFirstSubmitInElements ||
mDefaultSubmitElement == mFirstSubmitNotInElements,
"What happened here?");
return mDefaultSubmitElement;
}
bool
HTMLFormElement::IsDefaultSubmitElement(const nsIFormControl* aControl) const
{
NS_PRECONDITION(aControl, "Unexpected call");
if (aControl == mDefaultSubmitElement) {
// Yes, it is
return true;
}
if (mDefaultSubmitElement ||
(aControl != mFirstSubmitInElements &&
aControl != mFirstSubmitNotInElements)) {
// It isn't
return false;
}
// mDefaultSubmitElement is null, but we have a non-null submit around
// (aControl, in fact). figure out whether it's in fact the default submit
// and just hasn't been set that way yet. Note that we can't just call
// HandleDefaultSubmitRemoval because we might need to notify to handle that
// correctly and we don't know whether that's safe right here.
if (!mFirstSubmitInElements || !mFirstSubmitNotInElements) {
// We only have one first submit; aControl has to be it
return true;
}
// We have both kinds of submits. Check which comes first.
nsIFormControl* defaultSubmit =
CompareFormControlPosition(mFirstSubmitInElements,
mFirstSubmitNotInElements, this) < 0 ?
mFirstSubmitInElements : mFirstSubmitNotInElements;
return aControl == defaultSubmit;
}
bool
HTMLFormElement::ImplicitSubmissionIsDisabled() const
{
// Input text controls are always in the elements list.
uint32_t numDisablingControlsFound = 0;
uint32_t length = mControls->mElements.Length();
for (uint32_t i = 0; i < length && numDisablingControlsFound < 2; ++i) {
if (mControls->mElements[i]->IsSingleLineTextOrNumberControl(false)) {
numDisablingControlsFound++;
}
}
return numDisablingControlsFound != 1;
}
bool
HTMLFormElement::IsLastActiveElement(const nsIFormControl* aControl) const
{
NS_PRECONDITION(aControl, "Unexpected call");
for (auto* element : Reversed(mControls->mElements)) {
if (element->IsSingleLineTextOrNumberControl(false) &&
!element->IsDisabled()) {
return element == aControl;
}
}
return false;
}
NS_IMETHODIMP
HTMLFormElement::GetEncoding(nsAString& aEncoding)
{
return GetEnctype(aEncoding);
}
NS_IMETHODIMP
HTMLFormElement::SetEncoding(const nsAString& aEncoding)
{
return SetEnctype(aEncoding);
}
int32_t
HTMLFormElement::Length()
{
return mControls->Length();
}
NS_IMETHODIMP
HTMLFormElement::GetLength(int32_t* aLength)
{
*aLength = Length();
return NS_OK;
}
void
HTMLFormElement::ForgetCurrentSubmission()
{
mNotifiedObservers = false;
mIsSubmitting = false;
mSubmittingRequest = nullptr;
nsCOMPtr<nsIWebProgress> webProgress = do_QueryReferent(mWebProgress);
if (webProgress) {
webProgress->RemoveProgressListener(this);
}
mWebProgress = nullptr;
}
bool
HTMLFormElement::CheckFormValidity(nsIMutableArray* aInvalidElements) const
{
bool ret = true;
// This shouldn't be called recursively, so use a rather large value
// for the preallocated buffer.
AutoTArray<RefPtr<nsGenericHTMLFormElement>, 100> sortedControls;
if (NS_FAILED(mControls->GetSortedControls(sortedControls))) {
return false;
}
uint32_t len = sortedControls.Length();
for (uint32_t i = 0; i < len; ++i) {
nsCOMPtr<nsIConstraintValidation> cvElmt = do_QueryObject(sortedControls[i]);
if (cvElmt && cvElmt->IsCandidateForConstraintValidation() &&
!cvElmt->IsValid()) {
ret = false;
bool defaultAction = true;
nsContentUtils::DispatchTrustedEvent(sortedControls[i]->OwnerDoc(),
static_cast<nsIContent*>(sortedControls[i]),
NS_LITERAL_STRING("invalid"),
false, true, &defaultAction);
// Add all unhandled invalid controls to aInvalidElements if the caller
// requested them.
if (defaultAction && aInvalidElements) {
aInvalidElements->AppendElement(ToSupports(sortedControls[i]));
}
}
}
return ret;
}
bool
HTMLFormElement::CheckValidFormSubmission()
{
/**
* Check for form validity: do not submit a form if there are unhandled
* invalid controls in the form.
* This should not be done if the form has been submitted with .submit().
*
* NOTE: for the moment, we are also checking that there is an observer for
* NS_INVALIDFORMSUBMIT_SUBJECT so it will prevent blocking form submission
* if the browser does not have implemented a UI yet.
*
* TODO: the check for observer should be removed later when HTML5 Forms will
* be spread enough and authors will assume forms can't be submitted when
* invalid. See bug 587671.
*/
NS_ASSERTION(!HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate),
"We shouldn't be there if novalidate is set!");
// When .submit() is called aEvent = nullptr so we can rely on that to know if
// we have to check the validity of the form.
nsCOMPtr<nsIObserverService> service =
mozilla::services::GetObserverService();
if (!service) {
NS_WARNING("No observer service available!");
return true;
}
nsCOMPtr<nsISimpleEnumerator> theEnum;
nsresult rv = service->EnumerateObservers(NS_INVALIDFORMSUBMIT_SUBJECT,
getter_AddRefs(theEnum));
// Return true on error here because that's what we always did
NS_ENSURE_SUCCESS(rv, true);
bool hasObserver = false;
rv = theEnum->HasMoreElements(&hasObserver);
// Do not check form validity if there is no observer for
// NS_INVALIDFORMSUBMIT_SUBJECT.
if (NS_SUCCEEDED(rv) && hasObserver) {
nsCOMPtr<nsIMutableArray> invalidElements =
do_CreateInstance(NS_ARRAY_CONTRACTID, &rv);
// Return true on error here because that's what we always did
NS_ENSURE_SUCCESS(rv, true);
if (!CheckFormValidity(invalidElements.get())) {
// For the first invalid submission, we should update element states.
// We have to do that _before_ calling the observers so we are sure they
// will not interfere (like focusing the element).
if (!mEverTriedInvalidSubmit) {
mEverTriedInvalidSubmit = true;
/*
* We are going to call update states assuming elements want to
* be notified because we can't know.
* Submissions shouldn't happen during parsing so it _should_ be safe.
*/
nsAutoScriptBlocker scriptBlocker;
for (uint32_t i = 0, length = mControls->mElements.Length();
i < length; ++i) {
// Input elements can trigger a form submission and we want to
// update the style in that case.
if (mControls->mElements[i]->IsHTMLElement(nsGkAtoms::input) &&
nsContentUtils::IsFocusedContent(mControls->mElements[i])) {
static_cast<HTMLInputElement*>(mControls->mElements[i])
->UpdateValidityUIBits(true);
}
mControls->mElements[i]->UpdateState(true);
}
// Because of backward compatibility, <input type='image'> is not in
// elements but can be invalid.
// TODO: should probably be removed when bug 606491 will be fixed.
for (uint32_t i = 0, length = mControls->mNotInElements.Length();
i < length; ++i) {
mControls->mNotInElements[i]->UpdateState(true);
}
}
nsCOMPtr<nsISupports> inst;
nsCOMPtr<nsIFormSubmitObserver> observer;
bool more = true;
while (NS_SUCCEEDED(theEnum->HasMoreElements(&more)) && more) {
theEnum->GetNext(getter_AddRefs(inst));
observer = do_QueryInterface(inst);
if (observer) {
observer->NotifyInvalidSubmit(this,
static_cast<nsIArray*>(invalidElements));
}
}
// The form is invalid. Observers have been alerted. Do not submit.
return false;
}
} else {
NS_WARNING("There is no observer for \"invalidformsubmit\". \
One should be implemented!");
}
return true;
}
bool
HTMLFormElement::SubmissionCanProceed(Element* aSubmitter)
{
#ifdef DEBUG
if (aSubmitter) {
nsCOMPtr<nsIFormControl> fc = do_QueryInterface(aSubmitter);
MOZ_ASSERT(fc);
uint32_t type = fc->ControlType();
MOZ_ASSERT(type == NS_FORM_INPUT_SUBMIT ||
type == NS_FORM_INPUT_IMAGE ||
type == NS_FORM_BUTTON_SUBMIT,
"aSubmitter is not a submit control?");
}
#endif
// Modified step 2 of
// https://html.spec.whatwg.org/multipage/forms.html#concept-form-submit --
// we're not checking whether the node document is disconnected yet...
if (OwnerDoc()->GetSandboxFlags() & SANDBOXED_FORMS) {
return false;
}
if (HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) {
return true;
}
if (aSubmitter &&
aSubmitter->HasAttr(kNameSpaceID_None, nsGkAtoms::formnovalidate)) {
return true;
}
return CheckValidFormSubmission();
}
void
HTMLFormElement::UpdateValidity(bool aElementValidity)
{
if (aElementValidity) {
--mInvalidElementsCount;
} else {
++mInvalidElementsCount;
}
NS_ASSERTION(mInvalidElementsCount >= 0, "Something went seriously wrong!");
// The form validity has just changed if:
// - there are no more invalid elements ;
// - or there is one invalid elmement and an element just became invalid.
// If we have invalid elements and we used to before as well, do nothing.
if (mInvalidElementsCount &&
(mInvalidElementsCount != 1 || aElementValidity)) {
return;
}
/*
* We are going to update states assuming submit controls want to
* be notified because we can't know.
* UpdateValidity shouldn't be called so much during parsing so it _should_
* be safe.
*/
nsAutoScriptBlocker scriptBlocker;
// Inform submit controls that the form validity has changed.
for (uint32_t i = 0, length = mControls->mElements.Length();
i < length; ++i) {
if (mControls->mElements[i]->IsSubmitControl()) {
mControls->mElements[i]->UpdateState(true);
}
}
// Because of backward compatibility, <input type='image'> is not in elements
// so we have to check for controls not in elements too.
uint32_t length = mControls->mNotInElements.Length();
for (uint32_t i = 0; i < length; ++i) {
if (mControls->mNotInElements[i]->IsSubmitControl()) {
mControls->mNotInElements[i]->UpdateState(true);
}
}
UpdateState(true);
}
// nsIWebProgressListener
NS_IMETHODIMP
HTMLFormElement::OnStateChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aStateFlags,
nsresult aStatus)
{
// If STATE_STOP is never fired for any reason (redirect? Failed state
// change?) the form element will leak. It will be kept around by the
// nsIWebProgressListener (assuming it keeps a strong pointer). We will
// consequently leak the request.
if (aRequest == mSubmittingRequest &&
aStateFlags & nsIWebProgressListener::STATE_STOP) {
ForgetCurrentSubmission();
}
return NS_OK;
}
NS_IMETHODIMP
HTMLFormElement::OnProgressChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
HTMLFormElement::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI* location,
uint32_t aFlags)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
HTMLFormElement::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const char16_t* aMessage)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
HTMLFormElement::OnSecurityChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t state)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP_(int32_t)
HTMLFormElement::IndexOfControl(nsIFormControl* aControl)
{
int32_t index = 0;
return mControls->IndexOfControl(aControl, &index) == NS_OK ? index : 0;
}
void
HTMLFormElement::SetCurrentRadioButton(const nsAString& aName,
HTMLInputElement* aRadio)
{
mSelectedRadioButtons.Put(aName, aRadio);
}
HTMLInputElement*
HTMLFormElement::GetCurrentRadioButton(const nsAString& aName)
{
return mSelectedRadioButtons.GetWeak(aName);
}
NS_IMETHODIMP
HTMLFormElement::GetNextRadioButton(const nsAString& aName,
const bool aPrevious,
HTMLInputElement* aFocusedRadio,
HTMLInputElement** aRadioOut)
{
// Return the radio button relative to the focused radio button.
// If no radio is focused, get the radio relative to the selected one.
*aRadioOut = nullptr;
RefPtr<HTMLInputElement> currentRadio;
if (aFocusedRadio) {
currentRadio = aFocusedRadio;
}
else {
mSelectedRadioButtons.Get(aName, getter_AddRefs(currentRadio));
}
nsCOMPtr<nsISupports> itemWithName = DoResolveName(aName, true);
nsCOMPtr<nsINodeList> radioGroup(do_QueryInterface(itemWithName));
if (!radioGroup) {
return NS_ERROR_FAILURE;
}
int32_t index = radioGroup->IndexOf(currentRadio);
if (index < 0) {
return NS_ERROR_FAILURE;
}
uint32_t numRadios;
radioGroup->GetLength(&numRadios);
RefPtr<HTMLInputElement> radio;
bool isRadio = false;
do {
if (aPrevious) {
if (--index < 0) {
index = numRadios -1;
}
}
else if (++index >= (int32_t)numRadios) {
index = 0;
}
radio = HTMLInputElement::FromContentOrNull(radioGroup->Item(index));
isRadio = radio && radio->ControlType() == NS_FORM_INPUT_RADIO;
if (!isRadio) {
continue;
}
nsAutoString name;
radio->GetName(name);
isRadio = aName.Equals(name);
} while (!isRadio || (radio->Disabled() && radio != currentRadio));
NS_IF_ADDREF(*aRadioOut = radio);
return NS_OK;
}
NS_IMETHODIMP
HTMLFormElement::WalkRadioGroup(const nsAString& aName,
nsIRadioVisitor* aVisitor,
bool aFlushContent)
{
if (aName.IsEmpty()) {
//
// XXX If the name is empty, it's not stored in the control list. There
// *must* be a more efficient way to do this.
//
nsCOMPtr<nsIFormControl> control;
uint32_t len = GetElementCount();
for (uint32_t i = 0; i < len; i++) {
control = GetElementAt(i);
if (control->ControlType() == NS_FORM_INPUT_RADIO) {
nsCOMPtr<Element> controlElement = do_QueryInterface(control);
if (controlElement &&
controlElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
EmptyString(), eCaseMatters) &&
!aVisitor->Visit(control)) {
break;
}
}
}
return NS_OK;
}
// Get the control / list of controls from the form using form["name"]
nsCOMPtr<nsISupports> item = DoResolveName(aName, aFlushContent);
if (!item) {
return NS_ERROR_FAILURE;
}
// If it's just a lone radio button, then select it.
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(item);
if (formControl) {
if (formControl->ControlType() == NS_FORM_INPUT_RADIO) {
aVisitor->Visit(formControl);
}
return NS_OK;
}
nsCOMPtr<nsIDOMNodeList> nodeList = do_QueryInterface(item);
if (!nodeList) {
return NS_OK;
}
uint32_t length = 0;
nodeList->GetLength(&length);
for (uint32_t i = 0; i < length; i++) {
nsCOMPtr<nsIDOMNode> node;
nodeList->Item(i, getter_AddRefs(node));
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(node);
if (formControl && formControl->ControlType() == NS_FORM_INPUT_RADIO &&
!aVisitor->Visit(formControl)) {
break;
}
}
return NS_OK;
}
void
HTMLFormElement::AddToRadioGroup(const nsAString& aName,
HTMLInputElement* aRadio)
{
if (aRadio->IsRequired()) {
auto entry = mRequiredRadioButtonCounts.LookupForAdd(aName);
if (!entry) {
entry.OrInsert([]() { return 1; });
} else {
++entry.Data();
}
}
}
void
HTMLFormElement::RemoveFromRadioGroup(const nsAString& aName,
HTMLInputElement* aRadio)
{
if (aRadio->IsRequired()) {
auto entry = mRequiredRadioButtonCounts.Lookup(aName);
if (!entry) {
MOZ_ASSERT_UNREACHABLE("At least one radio button has to be required!");
} else {
MOZ_ASSERT(entry.Data() >= 1,
"At least one radio button has to be required!");
if (entry.Data() <= 1) {
entry.Remove();
} else {
--entry.Data();
}
}
}
}
uint32_t
HTMLFormElement::GetRequiredRadioCount(const nsAString& aName) const
{
return mRequiredRadioButtonCounts.Get(aName);
}
void
HTMLFormElement::RadioRequiredWillChange(const nsAString& aName,
bool aRequiredAdded)
{
if (aRequiredAdded) {
mRequiredRadioButtonCounts.Put(aName,
mRequiredRadioButtonCounts.Get(aName)+1);
} else {
uint32_t requiredNb = mRequiredRadioButtonCounts.Get(aName);
NS_ASSERTION(requiredNb >= 1,
"At least one radio button has to be required!");
if (requiredNb == 1) {
mRequiredRadioButtonCounts.Remove(aName);
} else {
mRequiredRadioButtonCounts.Put(aName, requiredNb-1);
}
}
}
bool
HTMLFormElement::GetValueMissingState(const nsAString& aName) const
{
return mValueMissingRadioGroups.Get(aName);
}
void
HTMLFormElement::SetValueMissingState(const nsAString& aName, bool aValue)
{
mValueMissingRadioGroups.Put(aName, aValue);
}
EventStates
HTMLFormElement::IntrinsicState() const
{
EventStates state = nsGenericHTMLElement::IntrinsicState();
if (mInvalidElementsCount) {
state |= NS_EVENT_STATE_INVALID;
} else {
state |= NS_EVENT_STATE_VALID;
}
return state;
}
void
HTMLFormElement::Clear()
{
for (int32_t i = mImageElements.Length() - 1; i >= 0; i--) {
mImageElements[i]->ClearForm(false);
}
mImageElements.Clear();
mImageNameLookupTable.Clear();
mPastNameLookupTable.Clear();
}
namespace {
struct PositionComparator
{
nsIContent* const mElement;
explicit PositionComparator(nsIContent* const aElement) : mElement(aElement) {}
int operator()(nsIContent* aElement) const {
if (mElement == aElement) {
return 0;
}
if (nsContentUtils::PositionIsBefore(mElement, aElement)) {
return -1;
}
return 1;
}
};
struct RadioNodeListAdaptor
{
RadioNodeList* const mList;
explicit RadioNodeListAdaptor(RadioNodeList* aList) : mList(aList) {}
nsIContent* operator[](size_t aIdx) const {
return mList->Item(aIdx);
}
};
} // namespace
nsresult
HTMLFormElement::AddElementToTableInternal(
nsInterfaceHashtable<nsStringHashKey,nsISupports>& aTable,
nsIContent* aChild, const nsAString& aName)
{
auto entry = aTable.LookupForAdd(aName);
if (!entry) {
// No entry found, add the element
entry.OrInsert([&aChild]() { return aChild; });
++mExpandoAndGeneration.generation;
} else {
// Found something in the hash, check its type
nsCOMPtr<nsIContent> content = do_QueryInterface(entry.Data());
if (content) {
// Check if the new content is the same as the one we found in the
// hash, if it is then we leave it in the hash as it is, this will
// happen if a form control has both a name and an id with the same
// value
if (content == aChild) {
return NS_OK;
}
// Found an element, create a list, add the element to the list and put
// the list in the hash
RadioNodeList *list = new RadioNodeList(this);
// If an element has a @form, we can assume it *might* be able to not have
// a parent and still be in the form.
NS_ASSERTION((content->IsElement() &&
content->AsElement()->HasAttr(kNameSpaceID_None, nsGkAtoms::form)) ||
content->GetParent(), "Item in list without parent");
// Determine the ordering between the new and old element.
bool newFirst = nsContentUtils::PositionIsBefore(aChild, content);
list->AppendElement(newFirst ? aChild : content.get());
list->AppendElement(newFirst ? content.get() : aChild);
nsCOMPtr<nsISupports> listSupports = do_QueryObject(list);
// Replace the element with the list.
entry.Data() = listSupports;
} else {
// There's already a list in the hash, add the child to the list.
MOZ_ASSERT(nsCOMPtr<RadioNodeList>(do_QueryInterface(entry.Data())));
auto* list = static_cast<RadioNodeList*>(entry.Data().get());
NS_ASSERTION(list->Length() > 1,
"List should have been converted back to a single element");
// Fast-path appends; this check is ok even if the child is
// already in the list, since if it tests true the child would
// have come at the end of the list, and the PositionIsBefore
// will test false.
if (nsContentUtils::PositionIsBefore(list->Item(list->Length() - 1), aChild)) {
list->AppendElement(aChild);
return NS_OK;
}
// If a control has a name equal to its id, it could be in the
// list already.
if (list->IndexOf(aChild) != -1) {
return NS_OK;
}
size_t idx;
DebugOnly<bool> found = BinarySearchIf(RadioNodeListAdaptor(list), 0, list->Length(),
PositionComparator(aChild), &idx);
MOZ_ASSERT(!found, "should not have found an element");
list->InsertElementAt(aChild, idx);
}
}
return NS_OK;
}
nsresult
HTMLFormElement::AddImageElement(HTMLImageElement* aChild)
{
AddElementToList(mImageElements, aChild, this);
return NS_OK;
}
nsresult
HTMLFormElement::AddImageElementToTable(HTMLImageElement* aChild,
const nsAString& aName)
{
return AddElementToTableInternal(mImageNameLookupTable, aChild, aName);
}
nsresult
HTMLFormElement::RemoveImageElement(HTMLImageElement* aChild)
{
RemoveElementFromPastNamesMap(aChild);
size_t index = mImageElements.IndexOf(aChild);
NS_ENSURE_STATE(index != mImageElements.NoIndex);
mImageElements.RemoveElementAt(index);
return NS_OK;
}
nsresult
HTMLFormElement::RemoveImageElementFromTable(HTMLImageElement* aElement,
const nsAString& aName)
{
return RemoveElementFromTableInternal(mImageNameLookupTable, aElement, aName);
}
void
HTMLFormElement::AddToPastNamesMap(const nsAString& aName,
nsISupports* aChild)
{
// If candidates contains exactly one node. Add a mapping from name to the
// node in candidates in the form element's past names map, replacing the
// previous entry with the same name, if any.
nsCOMPtr<nsIContent> node = do_QueryInterface(aChild);
if (node) {
mPastNameLookupTable.Put(aName, node);
node->SetFlags(MAY_BE_IN_PAST_NAMES_MAP);
}
}
void
HTMLFormElement::RemoveElementFromPastNamesMap(Element* aElement)
{
if (!aElement->HasFlag(MAY_BE_IN_PAST_NAMES_MAP)) {
return;
}
aElement->UnsetFlags(MAY_BE_IN_PAST_NAMES_MAP);
uint32_t oldCount = mPastNameLookupTable.Count();
for (auto iter = mPastNameLookupTable.Iter(); !iter.Done(); iter.Next()) {
if (aElement == iter.Data()) {
iter.Remove();
}
}
if (oldCount != mPastNameLookupTable.Count()) {
++mExpandoAndGeneration.generation;
}
}
JSObject*
HTMLFormElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLFormElementBinding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla
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