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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 "nsIConstraintValidation.h"
#include "nsAString.h"
#include "nsGenericHTMLElement.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/CustomEvent.h"
#include "mozilla/dom/HTMLFormElement.h"
#include "mozilla/dom/HTMLFieldSetElement.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/ValidityState.h"
#include "nsIFormControl.h"
#include "nsContentUtils.h"
#include "nsIFormSubmitObserver.h"
#include "nsIObserverService.h"
const uint16_t nsIConstraintValidation::sContentSpecifiedMaxLengthMessage = 256;
using namespace mozilla;
using namespace mozilla::dom;
nsIConstraintValidation::nsIConstraintValidation()
: mValidityBitField(0)
// By default, all elements are subjects to constraint validation.
,
mBarredFromConstraintValidation(false) {}
nsIConstraintValidation::~nsIConstraintValidation() = default;
mozilla::dom::ValidityState* nsIConstraintValidation::Validity() {
if (!mValidity) {
mValidity = new mozilla::dom::ValidityState(this);
}
return mValidity;
}
void nsIConstraintValidation::GetValidationMessage(
nsAString& aValidationMessage, ErrorResult& aError) {
aValidationMessage.Truncate();
if (IsCandidateForConstraintValidation() && !IsValid()) {
if (GetValidityState(VALIDITY_STATE_CUSTOM_ERROR)) {
aValidationMessage.Assign(mCustomValidity);
if (aValidationMessage.Length() > sContentSpecifiedMaxLengthMessage) {
aValidationMessage.Truncate(sContentSpecifiedMaxLengthMessage);
}
} else if (GetValidityState(VALIDITY_STATE_TOO_LONG)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_TOO_LONG);
} else if (GetValidityState(VALIDITY_STATE_TOO_SHORT)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_TOO_SHORT);
} else if (GetValidityState(VALIDITY_STATE_VALUE_MISSING)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_VALUE_MISSING);
} else if (GetValidityState(VALIDITY_STATE_TYPE_MISMATCH)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_TYPE_MISMATCH);
} else if (GetValidityState(VALIDITY_STATE_PATTERN_MISMATCH)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_PATTERN_MISMATCH);
} else if (GetValidityState(VALIDITY_STATE_RANGE_OVERFLOW)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_RANGE_OVERFLOW);
} else if (GetValidityState(VALIDITY_STATE_RANGE_UNDERFLOW)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_RANGE_UNDERFLOW);
} else if (GetValidityState(VALIDITY_STATE_STEP_MISMATCH)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_STEP_MISMATCH);
} else if (GetValidityState(VALIDITY_STATE_BAD_INPUT)) {
GetValidationMessage(aValidationMessage, VALIDITY_STATE_BAD_INPUT);
} else {
// There should not be other validity states.
aError.Throw(NS_ERROR_UNEXPECTED);
return;
}
} else {
aValidationMessage.Truncate();
}
}
bool nsIConstraintValidation::CheckValidity() {
if (!IsCandidateForConstraintValidation() || IsValid()) {
return true;
}
nsCOMPtr<nsIContent> content = do_QueryInterface(this);
NS_ASSERTION(content,
"This class should be inherited by HTML elements only!");
nsContentUtils::DispatchTrustedEvent(content->OwnerDoc(), content,
u"invalid"_ns, CanBubble::eNo,
Cancelable::eYes);
return false;
}
nsresult nsIConstraintValidation::CheckValidity(bool* aValidity) {
NS_ENSURE_ARG_POINTER(aValidity);
*aValidity = CheckValidity();
return NS_OK;
}
bool nsIConstraintValidation::ReportValidity() {
if (!IsCandidateForConstraintValidation() || IsValid()) {
return true;
}
nsCOMPtr<Element> element = do_QueryInterface(this);
MOZ_ASSERT(element, "This class should be inherited by HTML elements only!");
bool defaultAction = true;
nsContentUtils::DispatchTrustedEvent(element->OwnerDoc(), element,
u"invalid"_ns, CanBubble::eNo,
Cancelable::eYes, &defaultAction);
if (!defaultAction) {
return false;
}
AutoTArray<RefPtr<Element>, 1> invalidElements;
invalidElements.AppendElement(element);
AutoJSAPI jsapi;
if (!jsapi.Init(element->GetOwnerGlobal())) {
return false;
}
JS::Rooted<JS::Value> detail(jsapi.cx());
if (!ToJSValue(jsapi.cx(), invalidElements, &detail)) {
return false;
}
RefPtr<CustomEvent> event =
NS_NewDOMCustomEvent(element->OwnerDoc(), nullptr, nullptr);
event->InitCustomEvent(jsapi.cx(), u"MozInvalidForm"_ns,
/* CanBubble */ true,
/* Cancelable */ true, detail);
event->SetTrusted(true);
event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
element->DispatchEvent(*event);
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);
NS_ENSURE_SUCCESS(rv, 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(nullptr, invalidElements);
}
}
auto* inputElement = HTMLInputElement::FromNode(element);
if (inputElement && inputElement->State().HasState(NS_EVENT_STATE_FOCUS)) {
inputElement->UpdateValidityUIBits(true);
}
element->UpdateState(true);
return false;
}
void nsIConstraintValidation::SetValidityState(ValidityStateType aState,
bool aValue) {
bool previousValidity = IsValid();
if (aValue) {
mValidityBitField |= aState;
} else {
mValidityBitField &= ~aState;
}
// Inform the form and fieldset elements if our validity has changed.
if (previousValidity != IsValid() && IsCandidateForConstraintValidation()) {
nsCOMPtr<nsIFormControl> formCtrl = do_QueryInterface(this);
NS_ASSERTION(formCtrl, "This interface should be used by form elements!");
HTMLFormElement* form =
static_cast<HTMLFormElement*>(formCtrl->GetFormElement());
if (form) {
form->UpdateValidity(IsValid());
}
HTMLFieldSetElement* fieldSet = formCtrl->GetFieldSet();
if (fieldSet) {
fieldSet->UpdateValidity(IsValid());
}
}
}
void nsIConstraintValidation::SetCustomValidity(const nsAString& aError) {
mCustomValidity.Assign(aError);
SetValidityState(VALIDITY_STATE_CUSTOM_ERROR, !mCustomValidity.IsEmpty());
}
void nsIConstraintValidation::SetBarredFromConstraintValidation(bool aBarred) {
bool previousBarred = mBarredFromConstraintValidation;
mBarredFromConstraintValidation = aBarred;
// Inform the form and fieldset elements if our status regarding constraint
// validation is going to change.
if (!IsValid() && previousBarred != mBarredFromConstraintValidation) {
nsCOMPtr<nsIFormControl> formCtrl = do_QueryInterface(this);
NS_ASSERTION(formCtrl, "This interface should be used by form elements!");
// If the element is going to be barred from constraint validation, we can
// inform the form and fieldset that we are now valid. Otherwise, we are now
// invalid.
HTMLFormElement* form =
static_cast<HTMLFormElement*>(formCtrl->GetFormElement());
if (form) {
form->UpdateValidity(aBarred);
}
HTMLFieldSetElement* fieldSet = formCtrl->GetFieldSet();
if (fieldSet) {
fieldSet->UpdateValidity(aBarred);
}
}
}