mirror of
https://github.com/mozilla/gecko-dev.git
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245 lines
8.5 KiB
C++
245 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIConstraintValidation.h"
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#include "nsAString.h"
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#include "nsGenericHTMLElement.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/dom/CustomEvent.h"
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#include "mozilla/dom/HTMLFormElement.h"
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#include "mozilla/dom/HTMLFieldSetElement.h"
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#include "mozilla/dom/HTMLInputElement.h"
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#include "mozilla/dom/ValidityState.h"
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#include "nsIFormControl.h"
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#include "nsContentUtils.h"
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#include "nsIFormSubmitObserver.h"
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#include "nsIObserverService.h"
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const uint16_t nsIConstraintValidation::sContentSpecifiedMaxLengthMessage = 256;
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using namespace mozilla;
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using namespace mozilla::dom;
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nsIConstraintValidation::nsIConstraintValidation()
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: mValidityBitField(0)
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// By default, all elements are subjects to constraint validation.
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,
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mBarredFromConstraintValidation(false) {}
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nsIConstraintValidation::~nsIConstraintValidation() {}
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mozilla::dom::ValidityState* nsIConstraintValidation::Validity() {
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if (!mValidity) {
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mValidity = new mozilla::dom::ValidityState(this);
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}
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return mValidity;
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}
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void nsIConstraintValidation::GetValidationMessage(
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nsAString& aValidationMessage, ErrorResult& aError) {
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aValidationMessage.Truncate();
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if (IsCandidateForConstraintValidation() && !IsValid()) {
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if (GetValidityState(VALIDITY_STATE_CUSTOM_ERROR)) {
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aValidationMessage.Assign(mCustomValidity);
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if (aValidationMessage.Length() > sContentSpecifiedMaxLengthMessage) {
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aValidationMessage.Truncate(sContentSpecifiedMaxLengthMessage);
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}
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} else if (GetValidityState(VALIDITY_STATE_TOO_LONG)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_TOO_LONG);
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} else if (GetValidityState(VALIDITY_STATE_TOO_SHORT)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_TOO_SHORT);
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} else if (GetValidityState(VALIDITY_STATE_VALUE_MISSING)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_VALUE_MISSING);
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} else if (GetValidityState(VALIDITY_STATE_TYPE_MISMATCH)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_TYPE_MISMATCH);
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} else if (GetValidityState(VALIDITY_STATE_PATTERN_MISMATCH)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_PATTERN_MISMATCH);
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} else if (GetValidityState(VALIDITY_STATE_RANGE_OVERFLOW)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_RANGE_OVERFLOW);
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} else if (GetValidityState(VALIDITY_STATE_RANGE_UNDERFLOW)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_RANGE_UNDERFLOW);
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} else if (GetValidityState(VALIDITY_STATE_STEP_MISMATCH)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_STEP_MISMATCH);
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} else if (GetValidityState(VALIDITY_STATE_BAD_INPUT)) {
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GetValidationMessage(aValidationMessage, VALIDITY_STATE_BAD_INPUT);
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} else {
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// There should not be other validity states.
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aError.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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} else {
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aValidationMessage.Truncate();
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}
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}
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bool nsIConstraintValidation::CheckValidity() {
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if (!IsCandidateForConstraintValidation() || IsValid()) {
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return true;
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}
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nsCOMPtr<nsIContent> content = do_QueryInterface(this);
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NS_ASSERTION(content,
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"This class should be inherited by HTML elements only!");
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nsContentUtils::DispatchTrustedEvent(content->OwnerDoc(), content,
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NS_LITERAL_STRING("invalid"),
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CanBubble::eNo, Cancelable::eYes);
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return false;
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}
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nsresult nsIConstraintValidation::CheckValidity(bool* aValidity) {
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NS_ENSURE_ARG_POINTER(aValidity);
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*aValidity = CheckValidity();
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return NS_OK;
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}
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bool nsIConstraintValidation::ReportValidity() {
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if (!IsCandidateForConstraintValidation() || IsValid()) {
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return true;
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}
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nsCOMPtr<Element> element = do_QueryInterface(this);
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MOZ_ASSERT(element, "This class should be inherited by HTML elements only!");
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bool defaultAction = true;
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nsContentUtils::DispatchTrustedEvent(
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element->OwnerDoc(), element, NS_LITERAL_STRING("invalid"),
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CanBubble::eNo, Cancelable::eYes, &defaultAction);
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if (!defaultAction) {
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return false;
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}
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AutoTArray<RefPtr<Element>, 1> invalidElements;
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invalidElements.AppendElement(element);
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AutoJSAPI jsapi;
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if (!jsapi.Init(element->GetOwnerGlobal())) {
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return false;
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}
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JS::Rooted<JS::Value> detail(jsapi.cx());
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if (!ToJSValue(jsapi.cx(), invalidElements, &detail)) {
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return false;
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}
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RefPtr<CustomEvent> event =
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NS_NewDOMCustomEvent(element->OwnerDoc(), nullptr, nullptr);
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event->InitCustomEvent(jsapi.cx(), NS_LITERAL_STRING("MozInvalidForm"),
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/* CanBubble */ true,
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/* Cancelable */ true, detail);
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event->SetTrusted(true);
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event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
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element->DispatchEvent(*event);
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nsCOMPtr<nsIObserverService> service =
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mozilla::services::GetObserverService();
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if (!service) {
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NS_WARNING("No observer service available!");
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return true;
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}
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nsCOMPtr<nsISimpleEnumerator> theEnum;
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nsresult rv = service->EnumerateObservers(NS_INVALIDFORMSUBMIT_SUBJECT,
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getter_AddRefs(theEnum));
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// Return true on error here because that's what we always did
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NS_ENSURE_SUCCESS(rv, true);
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bool hasObserver = false;
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rv = theEnum->HasMoreElements(&hasObserver);
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NS_ENSURE_SUCCESS(rv, true);
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nsCOMPtr<nsISupports> inst;
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nsCOMPtr<nsIFormSubmitObserver> observer;
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bool more = true;
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while (NS_SUCCEEDED(theEnum->HasMoreElements(&more)) && more) {
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theEnum->GetNext(getter_AddRefs(inst));
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observer = do_QueryInterface(inst);
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if (observer) {
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observer->NotifyInvalidSubmit(nullptr, invalidElements);
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}
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}
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if (element->IsHTMLElement(nsGkAtoms::input) &&
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// We don't use nsContentUtils::IsFocusedContent here, because it doesn't
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// really do what we want for number controls: it's true for the
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// anonymous textnode inside, but not the number control itself. We can
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// use the focus state, though, because that gets synced to the number
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// control by the anonymous text control.
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element->State().HasState(NS_EVENT_STATE_FOCUS)) {
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HTMLInputElement* inputElement = HTMLInputElement::FromNode(element);
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inputElement->UpdateValidityUIBits(true);
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}
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element->UpdateState(true);
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return false;
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}
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void nsIConstraintValidation::SetValidityState(ValidityStateType aState,
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bool aValue) {
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bool previousValidity = IsValid();
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if (aValue) {
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mValidityBitField |= aState;
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} else {
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mValidityBitField &= ~aState;
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}
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// Inform the form and fieldset elements if our validity has changed.
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if (previousValidity != IsValid() && IsCandidateForConstraintValidation()) {
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nsCOMPtr<nsIFormControl> formCtrl = do_QueryInterface(this);
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NS_ASSERTION(formCtrl, "This interface should be used by form elements!");
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HTMLFormElement* form =
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static_cast<HTMLFormElement*>(formCtrl->GetFormElement());
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if (form) {
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form->UpdateValidity(IsValid());
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}
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HTMLFieldSetElement* fieldSet = formCtrl->GetFieldSet();
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if (fieldSet) {
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fieldSet->UpdateValidity(IsValid());
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}
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}
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}
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void nsIConstraintValidation::SetCustomValidity(const nsAString& aError) {
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mCustomValidity.Assign(aError);
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SetValidityState(VALIDITY_STATE_CUSTOM_ERROR, !mCustomValidity.IsEmpty());
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}
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void nsIConstraintValidation::SetBarredFromConstraintValidation(bool aBarred) {
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bool previousBarred = mBarredFromConstraintValidation;
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mBarredFromConstraintValidation = aBarred;
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// Inform the form and fieldset elements if our status regarding constraint
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// validation is going to change.
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if (!IsValid() && previousBarred != mBarredFromConstraintValidation) {
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nsCOMPtr<nsIFormControl> formCtrl = do_QueryInterface(this);
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NS_ASSERTION(formCtrl, "This interface should be used by form elements!");
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// If the element is going to be barred from constraint validation, we can
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// inform the form and fieldset that we are now valid. Otherwise, we are now
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// invalid.
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HTMLFormElement* form =
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static_cast<HTMLFormElement*>(formCtrl->GetFormElement());
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if (form) {
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form->UpdateValidity(aBarred);
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}
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HTMLFieldSetElement* fieldSet = formCtrl->GetFieldSet();
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if (fieldSet) {
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fieldSet->UpdateValidity(aBarred);
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}
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}
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}
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