/* -*- 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/EditorBase.h" #include "mozilla/EventDispatcher.h" #include "mozilla/EventListenerManager.h" #include "mozilla/EventStateManager.h" #include "mozilla/HTMLEditor.h" #include "mozilla/IMEContentObserver.h" #include "mozilla/IMEStateManager.h" #include "mozilla/MappedDeclarationsBuilder.h" #include "mozilla/Maybe.h" #include "mozilla/MouseEvents.h" #include "mozilla/PresShell.h" #include "mozilla/StaticPrefs_dom.h" #include "mozilla/TextEditor.h" #include "mozilla/TextEvents.h" #include "mozilla/StaticPrefs_html5.h" #include "mozilla/StaticPrefs_accessibility.h" #include "mozilla/dom/FetchPriority.h" #include "mozilla/dom/FormData.h" #include "nscore.h" #include "nsGenericHTMLElement.h" #include "nsCOMPtr.h" #include "nsAtom.h" #include "nsQueryObject.h" #include "mozilla/dom/BindContext.h" #include "mozilla/dom/Document.h" #include "nsPIDOMWindow.h" #include "nsIFrameInlines.h" #include "nsIScrollableFrame.h" #include "nsView.h" #include "nsViewManager.h" #include "nsIWidget.h" #include "nsRange.h" #include "nsPresContext.h" #include "nsError.h" #include "nsIPrincipal.h" #include "nsContainerFrame.h" #include "nsStyleUtil.h" #include "ReferrerInfo.h" #include "mozilla/PresState.h" #include "nsILayoutHistoryState.h" #include "nsHTMLParts.h" #include "nsContentUtils.h" #include "mozilla/dom/DirectionalityUtils.h" #include "mozilla/dom/DocumentOrShadowRoot.h" #include "nsString.h" #include "nsGkAtoms.h" #include "nsDOMCSSDeclaration.h" #include "nsITextControlFrame.h" #include "nsIFormControl.h" #include "mozilla/dom/HTMLFormElement.h" #include "nsFocusManager.h" #include "nsDOMStringMap.h" #include "nsDOMString.h" #include "nsLayoutUtils.h" #include "mozilla/dom/DocumentInlines.h" #include "HTMLFieldSetElement.h" #include "nsTextNode.h" #include "HTMLBRElement.h" #include "nsDOMMutationObserver.h" #include "mozilla/Preferences.h" #include "mozilla/dom/FromParser.h" #include "mozilla/dom/Link.h" #include "mozilla/dom/ScriptLoader.h" #include "nsDOMTokenList.h" #include "nsThreadUtils.h" #include "mozilla/dom/BindingUtils.h" #include "mozilla/dom/MouseEventBinding.h" #include "mozilla/dom/ToggleEvent.h" #include "mozilla/dom/TouchEvent.h" #include "mozilla/dom/InputEvent.h" #include "mozilla/dom/InvokeEvent.h" #include "mozilla/ErrorResult.h" #include "nsHTMLDocument.h" #include "nsGlobalWindowInner.h" #include "mozilla/dom/HTMLBodyElement.h" #include "imgIContainer.h" #include "nsComputedDOMStyle.h" #include "mozilla/dom/HTMLDialogElement.h" #include "mozilla/dom/HTMLLabelElement.h" #include "mozilla/dom/HTMLInputElement.h" #include "mozilla/dom/CustomElementRegistry.h" #include "mozilla/dom/ElementBinding.h" #include "mozilla/dom/ElementInternals.h" using namespace mozilla; using namespace mozilla::dom; static const uint8_t NS_INPUTMODE_NONE = 1; static const uint8_t NS_INPUTMODE_TEXT = 2; static const uint8_t NS_INPUTMODE_TEL = 3; static const uint8_t NS_INPUTMODE_URL = 4; static const uint8_t NS_INPUTMODE_EMAIL = 5; static const uint8_t NS_INPUTMODE_NUMERIC = 6; static const uint8_t NS_INPUTMODE_DECIMAL = 7; static const uint8_t NS_INPUTMODE_SEARCH = 8; static const nsAttrValue::EnumTable kInputmodeTable[] = { {"none", NS_INPUTMODE_NONE}, {"text", NS_INPUTMODE_TEXT}, {"tel", NS_INPUTMODE_TEL}, {"url", NS_INPUTMODE_URL}, {"email", NS_INPUTMODE_EMAIL}, {"numeric", NS_INPUTMODE_NUMERIC}, {"decimal", NS_INPUTMODE_DECIMAL}, {"search", NS_INPUTMODE_SEARCH}, {nullptr, 0}}; static const uint8_t NS_ENTERKEYHINT_ENTER = 1; static const uint8_t NS_ENTERKEYHINT_DONE = 2; static const uint8_t NS_ENTERKEYHINT_GO = 3; static const uint8_t NS_ENTERKEYHINT_NEXT = 4; static const uint8_t NS_ENTERKEYHINT_PREVIOUS = 5; static const uint8_t NS_ENTERKEYHINT_SEARCH = 6; static const uint8_t NS_ENTERKEYHINT_SEND = 7; static const nsAttrValue::EnumTable kEnterKeyHintTable[] = { {"enter", NS_ENTERKEYHINT_ENTER}, {"done", NS_ENTERKEYHINT_DONE}, {"go", NS_ENTERKEYHINT_GO}, {"next", NS_ENTERKEYHINT_NEXT}, {"previous", NS_ENTERKEYHINT_PREVIOUS}, {"search", NS_ENTERKEYHINT_SEARCH}, {"send", NS_ENTERKEYHINT_SEND}, {nullptr, 0}}; static const uint8_t NS_AUTOCAPITALIZE_NONE = 1; static const uint8_t NS_AUTOCAPITALIZE_SENTENCES = 2; static const uint8_t NS_AUTOCAPITALIZE_WORDS = 3; static const uint8_t NS_AUTOCAPITALIZE_CHARACTERS = 4; static const nsAttrValue::EnumTable kAutocapitalizeTable[] = { {"none", NS_AUTOCAPITALIZE_NONE}, {"sentences", NS_AUTOCAPITALIZE_SENTENCES}, {"words", NS_AUTOCAPITALIZE_WORDS}, {"characters", NS_AUTOCAPITALIZE_CHARACTERS}, {"off", NS_AUTOCAPITALIZE_NONE}, {"on", NS_AUTOCAPITALIZE_SENTENCES}, {"", 0}, {nullptr, 0}}; static const nsAttrValue::EnumTable* kDefaultAutocapitalize = &kAutocapitalizeTable[1]; nsresult nsGenericHTMLElement::CopyInnerTo(Element* aDst) { MOZ_ASSERT(!aDst->GetUncomposedDoc(), "Should not CopyInnerTo an Element in a document"); auto reparse = aDst->OwnerDoc() == OwnerDoc() ? ReparseAttributes::No : ReparseAttributes::Yes; nsresult rv = Element::CopyInnerTo(aDst, reparse); NS_ENSURE_SUCCESS(rv, rv); // cloning a node must retain its internal nonce slot nsString* nonce = static_cast(GetProperty(nsGkAtoms::nonce)); if (nonce) { static_cast(aDst)->SetNonce(*nonce); } return NS_OK; } static const nsAttrValue::EnumTable kDirTable[] = { {"ltr", Directionality::Ltr}, {"rtl", Directionality::Rtl}, {"auto", Directionality::Auto}, {nullptr, 0}, }; namespace { // See . enum class PopoverAttributeKeyword : uint8_t { Auto, EmptyString, Manual }; static const char* kPopoverAttributeValueAuto = "auto"; static const char* kPopoverAttributeValueEmptyString = ""; static const char* kPopoverAttributeValueManual = "manual"; static const nsAttrValue::EnumTable kPopoverTable[] = { {kPopoverAttributeValueAuto, PopoverAttributeKeyword::Auto}, {kPopoverAttributeValueEmptyString, PopoverAttributeKeyword::EmptyString}, {kPopoverAttributeValueManual, PopoverAttributeKeyword::Manual}, {nullptr, 0}}; // See . static const nsAttrValue::EnumTable* kPopoverTableInvalidValueDefault = &kPopoverTable[2]; } // namespace void nsGenericHTMLElement::GetFetchPriority(nsAString& aFetchPriority) const { // . GetEnumAttr(nsGkAtoms::fetchpriority, kFetchPriorityAttributeValueAuto, aFetchPriority); } /* static */ FetchPriority nsGenericHTMLElement::ToFetchPriority(const nsAString& aValue) { nsAttrValue attrValue; ParseFetchPriority(aValue, attrValue); MOZ_ASSERT(attrValue.Type() == nsAttrValue::eEnum); return FetchPriority(attrValue.GetEnumValue()); } namespace { // . static const nsAttrValue::EnumTable kFetchPriorityEnumTable[] = { {kFetchPriorityAttributeValueHigh, FetchPriority::High}, {kFetchPriorityAttributeValueLow, FetchPriority::Low}, {kFetchPriorityAttributeValueAuto, FetchPriority::Auto}, {nullptr, 0}}; // . static const nsAttrValue::EnumTable* kFetchPriorityEnumTableInvalidValueDefault = &kFetchPriorityEnumTable[2]; } // namespace FetchPriority nsGenericHTMLElement::GetFetchPriority() const { const nsAttrValue* fetchpriorityAttribute = GetParsedAttr(nsGkAtoms::fetchpriority); if (fetchpriorityAttribute) { MOZ_ASSERT(fetchpriorityAttribute->Type() == nsAttrValue::eEnum); return FetchPriority(fetchpriorityAttribute->GetEnumValue()); } return FetchPriority::Auto; } /* static */ void nsGenericHTMLElement::ParseFetchPriority(const nsAString& aValue, nsAttrValue& aResult) { aResult.ParseEnumValue(aValue, kFetchPriorityEnumTable, false /* aCaseSensitive */, kFetchPriorityEnumTableInvalidValueDefault); } void nsGenericHTMLElement::AddToNameTable(nsAtom* aName) { MOZ_ASSERT(HasName(), "Node doesn't have name?"); Document* doc = GetUncomposedDoc(); if (doc && !IsInNativeAnonymousSubtree()) { doc->AddToNameTable(this, aName); } } void nsGenericHTMLElement::RemoveFromNameTable() { if (HasName() && CanHaveName(NodeInfo()->NameAtom())) { if (Document* doc = GetUncomposedDoc()) { doc->RemoveFromNameTable(this, GetParsedAttr(nsGkAtoms::name)->GetAtomValue()); } } } void nsGenericHTMLElement::GetAccessKeyLabel(nsString& aLabel) { nsAutoString suffix; GetAccessKey(suffix); if (!suffix.IsEmpty()) { EventStateManager::GetAccessKeyLabelPrefix(this, aLabel); aLabel.Append(suffix); } } static bool IsOffsetParent(nsIFrame* aFrame) { LayoutFrameType frameType = aFrame->Type(); if (frameType == LayoutFrameType::TableCell || frameType == LayoutFrameType::TableWrapper) { // Per the IDL for Element, only td, th, and table are acceptable // offsetParents apart from body or positioned elements; we need to check // the content type as well as the frame type so we ignore anonymous tables // created by an element with display: table-cell with no actual table nsIContent* content = aFrame->GetContent(); return content->IsAnyOfHTMLElements(nsGkAtoms::table, nsGkAtoms::td, nsGkAtoms::th); } return false; } struct OffsetResult { Element* mParent = nullptr; CSSIntRect mRect; }; static OffsetResult GetUnretargetedOffsetsFor(const Element& aElement) { nsIFrame* frame = aElement.GetPrimaryFrame(); if (!frame) { return {}; } nsIFrame* styleFrame = nsLayoutUtils::GetStyleFrame(frame); nsIFrame* parent = frame->GetParent(); nsPoint origin(0, 0); nsIContent* offsetParent = nullptr; Element* docElement = aElement.GetComposedDoc()->GetRootElement(); nsIContent* content = frame->GetContent(); if (content && (content->IsHTMLElement(nsGkAtoms::body) || content == docElement)) { parent = frame; } else { const bool isPositioned = styleFrame->IsAbsPosContainingBlock(); const bool isAbsolutelyPositioned = frame->IsAbsolutelyPositioned(); origin += frame->GetPositionIgnoringScrolling(); for (; parent; parent = parent->GetParent()) { content = parent->GetContent(); // Stop at the first ancestor that is positioned. if (parent->IsAbsPosContainingBlock()) { offsetParent = content; break; } // Add the parent's origin to our own to get to the // right coordinate system. const bool isOffsetParent = !isPositioned && IsOffsetParent(parent); if (!isOffsetParent) { origin += parent->GetPositionIgnoringScrolling(); } if (content) { // If we've hit the document element, break here. if (content == docElement) { break; } // Break if the ancestor frame type makes it suitable as offset parent // and this element is *not* positioned or if we found the body element. if (isOffsetParent || content->IsHTMLElement(nsGkAtoms::body)) { offsetParent = content; break; } } } if (isAbsolutelyPositioned && !offsetParent) { // If this element is absolutely positioned, but we don't have // an offset parent it means this element is an absolutely // positioned child that's not nested inside another positioned // element, in this case the element's frame's parent is the // frame for the HTML element so we fail to find the body in the // parent chain. We want the offset parent in this case to be // the body, so we just get the body element from the document. // // We use GetBodyElement() here, not GetBody(), because we don't want to // end up with framesets here. offsetParent = aElement.GetComposedDoc()->GetBodyElement(); } } // Make the position relative to the padding edge. if (parent) { const nsStyleBorder* border = parent->StyleBorder(); origin.x -= border->GetComputedBorderWidth(eSideLeft); origin.y -= border->GetComputedBorderWidth(eSideTop); } // Get the union of all rectangles in this and continuation frames. // It doesn't really matter what we use as aRelativeTo here, since // we only care about the size. We just have to use something non-null. nsRect rcFrame = nsLayoutUtils::GetAllInFlowRectsUnion(frame, frame); rcFrame.MoveTo(origin); return {Element::FromNodeOrNull(offsetParent), CSSIntRect::FromAppUnitsRounded(rcFrame)}; } static bool ShouldBeRetargeted(const Element& aReferenceElement, const Element& aElementToMaybeRetarget) { ShadowRoot* shadow = aElementToMaybeRetarget.GetContainingShadow(); if (!shadow) { return false; } for (ShadowRoot* scope = aReferenceElement.GetContainingShadow(); scope; scope = scope->Host()->GetContainingShadow()) { if (scope == shadow) { return false; } } return true; } Element* nsGenericHTMLElement::GetOffsetRect(CSSIntRect& aRect) { aRect = CSSIntRect(); if (!GetPrimaryFrame(FlushType::Layout)) { return nullptr; } OffsetResult thisResult = GetUnretargetedOffsetsFor(*this); aRect = thisResult.mRect; Element* parent = thisResult.mParent; while (parent && ShouldBeRetargeted(*this, *parent)) { OffsetResult result = GetUnretargetedOffsetsFor(*parent); aRect += result.mRect.TopLeft(); parent = result.mParent; } return parent; } bool nsGenericHTMLElement::Spellcheck() { // Has the state has been explicitly set? nsIContent* node; for (node = this; node; node = node->GetParent()) { if (node->IsHTMLElement()) { static Element::AttrValuesArray strings[] = {nsGkAtoms::_true, nsGkAtoms::_false, nullptr}; switch (node->AsElement()->FindAttrValueIn( kNameSpaceID_None, nsGkAtoms::spellcheck, strings, eCaseMatters)) { case 0: // spellcheck = "true" return true; case 1: // spellcheck = "false" return false; } } } // contenteditable/designMode are spellchecked by default if (IsEditable()) { return true; } // Is this a chrome element? if (nsContentUtils::IsChromeDoc(OwnerDoc())) { return false; // Not spellchecked by default } // Anything else that's not a form control is not spellchecked by default nsCOMPtr formControl = do_QueryObject(this); if (!formControl) { return false; // Not spellchecked by default } // Is this a multiline plaintext input? auto controlType = formControl->ControlType(); if (controlType == FormControlType::Textarea) { return true; // Spellchecked by default } // Is this anything other than an input text? // Other inputs are not spellchecked. if (controlType != FormControlType::InputText) { return false; // Not spellchecked by default } // Does the user want input text spellchecked by default? // NOTE: Do not reflect a pref value of 0 back to the DOM getter. // The web page should not know if the user has disabled spellchecking. // We'll catch this in the editor itself. int32_t spellcheckLevel = Preferences::GetInt("layout.spellcheckDefault", 1); return spellcheckLevel == 2; // "Spellcheck multi- and single-line" } bool nsGenericHTMLElement::InNavQuirksMode(Document* aDoc) { return aDoc && aDoc->GetCompatibilityMode() == eCompatibility_NavQuirks; } void nsGenericHTMLElement::UpdateEditableState(bool aNotify) { // XXX Should we do this only when in a document? ContentEditableTristate value = GetContentEditableValue(); if (value != eInherit) { SetEditableFlag(!!value); UpdateReadOnlyState(aNotify); return; } nsStyledElement::UpdateEditableState(aNotify); } nsresult nsGenericHTMLElement::BindToTree(BindContext& aContext, nsINode& aParent) { nsresult rv = nsGenericHTMLElementBase::BindToTree(aContext, aParent); NS_ENSURE_SUCCESS(rv, rv); if (IsInComposedDoc()) { RegUnRegAccessKey(true); } if (IsInUncomposedDoc()) { if (HasName() && CanHaveName(NodeInfo()->NameAtom())) { aContext.OwnerDoc().AddToNameTable( this, GetParsedAttr(nsGkAtoms::name)->GetAtomValue()); } } if (HasFlag(NODE_IS_EDITABLE) && GetContentEditableValue() == eTrue && IsInComposedDoc()) { aContext.OwnerDoc().ChangeContentEditableCount(this, +1); } // Hide any nonce from the DOM, but keep the internal value of the // nonce by copying and resetting the internal nonce value. if (HasFlag(NODE_HAS_NONCE_AND_HEADER_CSP) && IsInComposedDoc() && OwnerDoc()->GetBrowsingContext()) { nsContentUtils::AddScriptRunner(NS_NewRunnableFunction( "nsGenericHTMLElement::ResetNonce::Runnable", [self = RefPtr(this)]() { nsAutoString nonce; self->GetNonce(nonce); self->SetAttr(kNameSpaceID_None, nsGkAtoms::nonce, u""_ns, true); self->SetNonce(nonce); })); } // We need to consider a labels element is moved to another subtree // with different root, it needs to update labels list and its root // as well. nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots(); if (slots && slots->mLabelsList) { slots->mLabelsList->MaybeResetRoot(SubtreeRoot()); } return rv; } void nsGenericHTMLElement::UnbindFromTree(bool aNullParent) { if (IsInComposedDoc()) { // https://html.spec.whatwg.org/#dom-trees:hide-popover-algorithm // If removedNode's popover attribute is not in the no popover state, then // run the hide popover algorithm given removedNode, false, false, and // false. if (GetPopoverData()) { HidePopoverWithoutRunningScript(); } RegUnRegAccessKey(false); } RemoveFromNameTable(); if (GetContentEditableValue() == eTrue) { if (Document* doc = GetComposedDoc()) { doc->ChangeContentEditableCount(this, -1); } } nsStyledElement::UnbindFromTree(aNullParent); // Invalidate .labels list. It will be repopulated when used the next time. nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots(); if (slots && slots->mLabelsList) { slots->mLabelsList->MaybeResetRoot(SubtreeRoot()); } } HTMLFormElement* nsGenericHTMLElement::FindAncestorForm( HTMLFormElement* aCurrentForm) { NS_ASSERTION(!HasAttr(nsGkAtoms::form) || IsHTMLElement(nsGkAtoms::img), "FindAncestorForm should not be called if @form is set!"); if (IsInNativeAnonymousSubtree()) { return nullptr; } nsIContent* content = this; while (content) { // If the current ancestor is a form, return it as our form if (content->IsHTMLElement(nsGkAtoms::form)) { #ifdef DEBUG if (!nsContentUtils::IsInSameAnonymousTree(this, content)) { // It's possible that we started unbinding at |content| or // some ancestor of it, and |content| and |this| used to all be // anonymous. Check for this the hard way. for (nsIContent* child = this; child != content; child = child->GetParent()) { NS_ASSERTION(child->ComputeIndexInParentContent().isSome(), "Walked too far?"); } } #endif return static_cast(content); } nsIContent* prevContent = content; content = prevContent->GetParent(); if (!content && aCurrentForm) { // We got to the root of the subtree we're in, and we're being removed // from the DOM (the only time we get into this method with a non-null // aCurrentForm). Check whether aCurrentForm is in the same subtree. If // it is, we want to return aCurrentForm, since this case means that // we're one of those inputs-in-a-table that have a hacked mForm pointer // and a subtree containing both us and the form got removed from the // DOM. if (aCurrentForm->IsInclusiveDescendantOf(prevContent)) { return aCurrentForm; } } } return nullptr; } bool nsGenericHTMLElement::CheckHandleEventForAnchorsPreconditions( EventChainVisitor& aVisitor) { MOZ_ASSERT(nsCOMPtr(do_QueryObject(this)), "should be called only when |this| implements |Link|"); // When disconnected, only should navigate away per // https://html.spec.whatwg.org/#cannot-navigate return IsInComposedDoc() || IsHTMLElement(nsGkAtoms::a); } void nsGenericHTMLElement::GetEventTargetParentForAnchors( EventChainPreVisitor& aVisitor) { nsGenericHTMLElementBase::GetEventTargetParent(aVisitor); if (!CheckHandleEventForAnchorsPreconditions(aVisitor)) { return; } GetEventTargetParentForLinks(aVisitor); } nsresult nsGenericHTMLElement::PostHandleEventForAnchors( EventChainPostVisitor& aVisitor) { if (!CheckHandleEventForAnchorsPreconditions(aVisitor)) { return NS_OK; } return PostHandleEventForLinks(aVisitor); } bool nsGenericHTMLElement::IsHTMLLink(nsIURI** aURI) const { MOZ_ASSERT(aURI, "Must provide aURI out param"); *aURI = GetHrefURIForAnchors().take(); // We promise out param is non-null if we return true, so base rv on it return *aURI != nullptr; } already_AddRefed nsGenericHTMLElement::GetHrefURIForAnchors() const { // This is used by the three Link implementations and // nsHTMLStyleElement. // Get href= attribute (relative URI). // We use the nsAttrValue's copy of the URI string to avoid copying. nsCOMPtr uri; GetURIAttr(nsGkAtoms::href, nullptr, getter_AddRefs(uri)); return uri.forget(); } void nsGenericHTMLElement::BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName, const nsAttrValue* aValue, bool aNotify) { if (aNamespaceID == kNameSpaceID_None) { if (aName == nsGkAtoms::accesskey) { // Have to unregister before clearing flag. See UnregAccessKey RegUnRegAccessKey(false); if (!aValue) { UnsetFlags(NODE_HAS_ACCESSKEY); } } else if (aName == nsGkAtoms::name) { // Have to do this before clearing flag. See RemoveFromNameTable RemoveFromNameTable(); if (!aValue || aValue->IsEmptyString()) { ClearHasName(); } } else if (aName == nsGkAtoms::contenteditable) { if (aValue) { // Set this before the attribute is set so that any subclass code that // runs before the attribute is set won't think we're missing a // contenteditable attr when we actually have one. SetMayHaveContentEditableAttr(); } } if (!aValue && IsEventAttributeName(aName)) { if (EventListenerManager* manager = GetExistingListenerManager()) { manager->RemoveEventHandler(GetEventNameForAttr(aName)); } } } return nsGenericHTMLElementBase::BeforeSetAttr(aNamespaceID, aName, aValue, aNotify); } namespace { constexpr PopoverAttributeState ToPopoverAttributeState( PopoverAttributeKeyword aPopoverAttributeKeyword) { // See . switch (aPopoverAttributeKeyword) { case PopoverAttributeKeyword::Auto: return PopoverAttributeState::Auto; case PopoverAttributeKeyword::EmptyString: return PopoverAttributeState::Auto; case PopoverAttributeKeyword::Manual: return PopoverAttributeState::Manual; default: { MOZ_ASSERT_UNREACHABLE(); return PopoverAttributeState::None; } } } } // namespace void nsGenericHTMLElement::AfterSetPopoverAttr() { auto mapPopoverState = [](const nsAttrValue* value) -> PopoverAttributeState { if (value) { MOZ_ASSERT(value->Type() == nsAttrValue::eEnum); const auto popoverAttributeKeyword = static_cast(value->GetEnumValue()); return ToPopoverAttributeState(popoverAttributeKeyword); } // The missing value default is the no popover state, see // . return PopoverAttributeState::None; }; PopoverAttributeState newState = mapPopoverState(GetParsedAttr(nsGkAtoms::popover)); const PopoverAttributeState oldState = GetPopoverAttributeState(); if (newState != oldState) { PopoverPseudoStateUpdate(false, true); if (IsPopoverOpen()) { HidePopoverInternal(/* aFocusPreviousElement = */ true, /* aFireEvents = */ true, IgnoreErrors()); // Event handlers could have removed the popover attribute, or changed // its value. // https://github.com/whatwg/html/issues/9034 newState = mapPopoverState(GetParsedAttr(nsGkAtoms::popover)); } if (newState == PopoverAttributeState::None) { ClearPopoverData(); RemoveStates(ElementState::POPOVER_OPEN); } else { // TODO: what if `HidePopoverInternal` called `ShowPopup()`? EnsurePopoverData().SetPopoverAttributeState(newState); } } } void nsGenericHTMLElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName, const nsAttrValue* aValue, const nsAttrValue* aOldValue, nsIPrincipal* aMaybeScriptedPrincipal, bool aNotify) { if (aNamespaceID == kNameSpaceID_None) { if (IsEventAttributeName(aName) && aValue) { MOZ_ASSERT(aValue->Type() == nsAttrValue::eString, "Expected string value for script body"); SetEventHandler(GetEventNameForAttr(aName), aValue->GetStringValue()); } else if (aNotify && aName == nsGkAtoms::spellcheck) { SyncEditorsOnSubtree(this); } else if (aName == nsGkAtoms::popover && StaticPrefs::dom_element_popover_enabled()) { nsContentUtils::AddScriptRunner( NewRunnableMethod("nsGenericHTMLElement::AfterSetPopoverAttr", this, &nsGenericHTMLElement::AfterSetPopoverAttr)); } else if (aName == nsGkAtoms::popovertarget) { ClearExplicitlySetAttrElement(nsGkAtoms::popovertarget); } else if (aName == nsGkAtoms::dir) { auto dir = Directionality::Ltr; // A boolean tracking whether we need to recompute our directionality. // This needs to happen after we update our internal "dir" attribute // state but before we call SetDirectionalityOnDescendants. bool recomputeDirectionality = false; ElementState dirStates; if (aValue && aValue->Type() == nsAttrValue::eEnum) { SetHasValidDir(); dirStates |= ElementState::HAS_DIR_ATTR; auto dirValue = Directionality(aValue->GetEnumValue()); if (dirValue == Directionality::Auto) { dirStates |= ElementState::HAS_DIR_ATTR_LIKE_AUTO; } else { dir = dirValue; SetDirectionality(dir, aNotify); if (dirValue == Directionality::Ltr) { dirStates |= ElementState::HAS_DIR_ATTR_LTR; } else { MOZ_ASSERT(dirValue == Directionality::Rtl); dirStates |= ElementState::HAS_DIR_ATTR_RTL; } } } else { if (aValue) { // We have a value, just not a valid one. dirStates |= ElementState::HAS_DIR_ATTR; } ClearHasValidDir(); if (NodeInfo()->Equals(nsGkAtoms::bdi)) { dirStates |= ElementState::HAS_DIR_ATTR_LIKE_AUTO; } else { recomputeDirectionality = true; } } // Now figure out what's changed about our dir states. ElementState oldDirStates = State() & ElementState::DIR_ATTR_STATES; ElementState changedStates = dirStates ^ oldDirStates; if (!changedStates.IsEmpty()) { ToggleStates(changedStates, aNotify); } if (recomputeDirectionality) { dir = RecomputeDirectionality(this, aNotify); } SetDirectionalityOnDescendants(this, dir, aNotify); } else if (aName == nsGkAtoms::contenteditable) { int32_t editableCountDelta = 0; if (aOldValue && (aOldValue->Equals(u"true"_ns, eIgnoreCase) || aOldValue->Equals(u""_ns, eIgnoreCase))) { editableCountDelta = -1; } if (aValue && (aValue->Equals(u"true"_ns, eIgnoreCase) || aValue->Equals(u""_ns, eIgnoreCase))) { ++editableCountDelta; } ChangeEditableState(editableCountDelta); } else if (aName == nsGkAtoms::accesskey) { if (aValue && !aValue->Equals(u""_ns, eIgnoreCase)) { SetFlags(NODE_HAS_ACCESSKEY); RegUnRegAccessKey(true); } } else if (aName == nsGkAtoms::inert) { if (aValue) { AddStates(ElementState::INERT); } else { RemoveStates(ElementState::INERT); } } else if (aName == nsGkAtoms::name) { if (aValue && !aValue->Equals(u""_ns, eIgnoreCase)) { // This may not be quite right because we can have subclass code run // before here. But in practice subclasses don't care about this flag, // and in particular selector matching does not care. Otherwise we'd // want to handle it like we handle id attributes (in PreIdMaybeChange // and PostIdMaybeChange). SetHasName(); if (CanHaveName(NodeInfo()->NameAtom())) { AddToNameTable(aValue->GetAtomValue()); } } } else if (aName == nsGkAtoms::inputmode || aName == nsGkAtoms::enterkeyhint) { if (nsFocusManager::GetFocusedElementStatic() == this) { if (const nsPresContext* presContext = GetPresContext(eForComposedDoc)) { IMEContentObserver* observer = IMEStateManager::GetActiveContentObserver(); if (observer && observer->IsObserving(*presContext, this)) { if (RefPtr editorBase = GetEditorWithoutCreation()) { IMEState newState; editorBase->GetPreferredIMEState(&newState); OwningNonNull kungFuDeathGrip(*this); IMEStateManager::UpdateIMEState( newState, kungFuDeathGrip, *editorBase, {IMEStateManager::UpdateIMEStateOption::ForceUpdate, IMEStateManager::UpdateIMEStateOption:: DontCommitComposition}); } } } } } // The nonce will be copied over to an internal slot and cleared from the // Element within BindToTree to avoid CSS Selector nonce exfiltration if // the CSP list contains a header-delivered CSP. if (nsGkAtoms::nonce == aName) { if (aValue) { SetNonce(aValue->GetStringValue()); if (OwnerDoc()->GetHasCSPDeliveredThroughHeader()) { SetFlags(NODE_HAS_NONCE_AND_HEADER_CSP); } } else { RemoveNonce(); } } } return nsGenericHTMLElementBase::AfterSetAttr( aNamespaceID, aName, aValue, aOldValue, aMaybeScriptedPrincipal, aNotify); } EventListenerManager* nsGenericHTMLElement::GetEventListenerManagerForAttr( nsAtom* aAttrName, bool* aDefer) { // Attributes on the body and frameset tags get set on the global object if ((mNodeInfo->Equals(nsGkAtoms::body) || mNodeInfo->Equals(nsGkAtoms::frameset)) && // We only forward some event attributes from body/frameset to window (0 #define EVENT(name_, id_, type_, struct_) /* nothing */ #define FORWARDED_EVENT(name_, id_, type_, struct_) \ || nsGkAtoms::on##name_ == aAttrName #define WINDOW_EVENT FORWARDED_EVENT #include "mozilla/EventNameList.h" // IWYU pragma: keep #undef WINDOW_EVENT #undef FORWARDED_EVENT #undef EVENT )) { nsPIDOMWindowInner* win; // If we have a document, and it has a window, add the event // listener on the window (the inner window). If not, proceed as // normal. // XXXbz sXBL/XBL2 issue: should we instead use GetComposedDoc() here, // override BindToTree for those classes and munge event listeners there? Document* document = OwnerDoc(); *aDefer = false; if ((win = document->GetInnerWindow())) { nsCOMPtr piTarget(do_QueryInterface(win)); return piTarget->GetOrCreateListenerManager(); } return nullptr; } return nsGenericHTMLElementBase::GetEventListenerManagerForAttr(aAttrName, aDefer); } #define EVENT(name_, id_, type_, struct_) /* nothing; handled by nsINode */ #define FORWARDED_EVENT(name_, id_, type_, struct_) \ EventHandlerNonNull* nsGenericHTMLElement::GetOn##name_() { \ if (IsAnyOfHTMLElements(nsGkAtoms::body, nsGkAtoms::frameset)) { \ /* XXXbz note to self: add tests for this! */ \ if (nsPIDOMWindowInner* win = OwnerDoc()->GetInnerWindow()) { \ nsGlobalWindowInner* globalWin = nsGlobalWindowInner::Cast(win); \ return globalWin->GetOn##name_(); \ } \ return nullptr; \ } \ \ return nsINode::GetOn##name_(); \ } \ void nsGenericHTMLElement::SetOn##name_(EventHandlerNonNull* handler) { \ if (IsAnyOfHTMLElements(nsGkAtoms::body, nsGkAtoms::frameset)) { \ nsPIDOMWindowInner* win = OwnerDoc()->GetInnerWindow(); \ if (!win) { \ return; \ } \ \ nsGlobalWindowInner* globalWin = nsGlobalWindowInner::Cast(win); \ return globalWin->SetOn##name_(handler); \ } \ \ return nsINode::SetOn##name_(handler); \ } #define ERROR_EVENT(name_, id_, type_, struct_) \ already_AddRefed nsGenericHTMLElement::GetOn##name_() { \ if (IsAnyOfHTMLElements(nsGkAtoms::body, nsGkAtoms::frameset)) { \ /* XXXbz note to self: add tests for this! */ \ if (nsPIDOMWindowInner* win = OwnerDoc()->GetInnerWindow()) { \ nsGlobalWindowInner* globalWin = nsGlobalWindowInner::Cast(win); \ OnErrorEventHandlerNonNull* errorHandler = globalWin->GetOn##name_(); \ if (errorHandler) { \ RefPtr handler = \ new EventHandlerNonNull(errorHandler); \ return handler.forget(); \ } \ } \ return nullptr; \ } \ \ RefPtr handler = nsINode::GetOn##name_(); \ return handler.forget(); \ } \ void nsGenericHTMLElement::SetOn##name_(EventHandlerNonNull* handler) { \ if (IsAnyOfHTMLElements(nsGkAtoms::body, nsGkAtoms::frameset)) { \ nsPIDOMWindowInner* win = OwnerDoc()->GetInnerWindow(); \ if (!win) { \ return; \ } \ \ nsGlobalWindowInner* globalWin = nsGlobalWindowInner::Cast(win); \ RefPtr errorHandler; \ if (handler) { \ errorHandler = new OnErrorEventHandlerNonNull(handler); \ } \ return globalWin->SetOn##name_(errorHandler); \ } \ \ return nsINode::SetOn##name_(handler); \ } #include "mozilla/EventNameList.h" // IWYU pragma: keep #undef ERROR_EVENT #undef FORWARDED_EVENT #undef EVENT void nsGenericHTMLElement::GetBaseTarget(nsAString& aBaseTarget) const { OwnerDoc()->GetBaseTarget(aBaseTarget); } //---------------------------------------------------------------------- bool nsGenericHTMLElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute, const nsAString& aValue, nsIPrincipal* aMaybeScriptedPrincipal, nsAttrValue& aResult) { if (aNamespaceID == kNameSpaceID_None) { if (aAttribute == nsGkAtoms::dir) { return aResult.ParseEnumValue(aValue, kDirTable, false); } if (aAttribute == nsGkAtoms::popover && StaticPrefs::dom_element_popover_enabled()) { return aResult.ParseEnumValue(aValue, kPopoverTable, false, kPopoverTableInvalidValueDefault); } if (aAttribute == nsGkAtoms::tabindex) { return aResult.ParseIntValue(aValue); } if (aAttribute == nsGkAtoms::referrerpolicy) { return ParseReferrerAttribute(aValue, aResult); } if (aAttribute == nsGkAtoms::name) { // Store name as an atom. name="" means that the element has no name, // not that it has an empty string as the name. if (aValue.IsEmpty()) { return false; } aResult.ParseAtom(aValue); return true; } if (aAttribute == nsGkAtoms::contenteditable || aAttribute == nsGkAtoms::translate) { aResult.ParseAtom(aValue); return true; } if (aAttribute == nsGkAtoms::rel) { aResult.ParseAtomArray(aValue); return true; } if (aAttribute == nsGkAtoms::inputmode) { return aResult.ParseEnumValue(aValue, kInputmodeTable, false); } if (aAttribute == nsGkAtoms::enterkeyhint) { return aResult.ParseEnumValue(aValue, kEnterKeyHintTable, false); } if (aAttribute == nsGkAtoms::autocapitalize) { return aResult.ParseEnumValue(aValue, kAutocapitalizeTable, false); } } return nsGenericHTMLElementBase::ParseAttribute( aNamespaceID, aAttribute, aValue, aMaybeScriptedPrincipal, aResult); } bool nsGenericHTMLElement::ParseBackgroundAttribute(int32_t aNamespaceID, nsAtom* aAttribute, const nsAString& aValue, nsAttrValue& aResult) { if (aNamespaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::background && !aValue.IsEmpty()) { // Resolve url to an absolute url Document* doc = OwnerDoc(); nsCOMPtr uri; nsresult rv = nsContentUtils::NewURIWithDocumentCharset( getter_AddRefs(uri), aValue, doc, GetBaseURI()); if (NS_FAILED(rv)) { return false; } aResult.SetTo(uri, &aValue); return true; } return false; } bool nsGenericHTMLElement::IsAttributeMapped(const nsAtom* aAttribute) const { static const MappedAttributeEntry* const map[] = {sCommonAttributeMap}; return FindAttributeDependence(aAttribute, map); } nsMapRuleToAttributesFunc nsGenericHTMLElement::GetAttributeMappingFunction() const { return &MapCommonAttributesInto; } nsIFormControlFrame* nsGenericHTMLElement::GetFormControlFrame( bool aFlushFrames) { auto flushType = aFlushFrames ? FlushType::Frames : FlushType::None; nsIFrame* frame = GetPrimaryFrame(flushType); if (!frame) { return nullptr; } if (nsIFormControlFrame* f = do_QueryFrame(frame)) { return f; } // If we have generated content, the primary frame will be a wrapper frame... // Our real frame will be in its child list. // // FIXME(emilio): I don't think that's true... See bug 155957 for test-cases // though, we should figure out whether this is still needed. for (nsIFrame* kid : frame->PrincipalChildList()) { if (nsIFormControlFrame* f = do_QueryFrame(kid)) { return f; } } return nullptr; } static const nsAttrValue::EnumTable kDivAlignTable[] = { {"left", StyleTextAlign::MozLeft}, {"right", StyleTextAlign::MozRight}, {"center", StyleTextAlign::MozCenter}, {"middle", StyleTextAlign::MozCenter}, {"justify", StyleTextAlign::Justify}, {nullptr, 0}}; static const nsAttrValue::EnumTable kFrameborderTable[] = { {"yes", FrameBorderProperty::Yes}, {"no", FrameBorderProperty::No}, {"1", FrameBorderProperty::One}, {"0", FrameBorderProperty::Zero}, {nullptr, 0}}; // TODO(emilio): Nobody uses the parsed attribute here. static const nsAttrValue::EnumTable kScrollingTable[] = { {"yes", ScrollingAttribute::Yes}, {"no", ScrollingAttribute::No}, {"on", ScrollingAttribute::On}, {"off", ScrollingAttribute::Off}, {"scroll", ScrollingAttribute::Scroll}, {"noscroll", ScrollingAttribute::Noscroll}, {"auto", ScrollingAttribute::Auto}, {nullptr, 0}}; static const nsAttrValue::EnumTable kTableVAlignTable[] = { {"top", StyleVerticalAlignKeyword::Top}, {"middle", StyleVerticalAlignKeyword::Middle}, {"bottom", StyleVerticalAlignKeyword::Bottom}, {"baseline", StyleVerticalAlignKeyword::Baseline}, {nullptr, 0}}; bool nsGenericHTMLElement::ParseAlignValue(const nsAString& aString, nsAttrValue& aResult) { static const nsAttrValue::EnumTable kAlignTable[] = { {"left", StyleTextAlign::Left}, {"right", StyleTextAlign::Right}, {"top", StyleVerticalAlignKeyword::Top}, {"middle", StyleVerticalAlignKeyword::MozMiddleWithBaseline}, // Intentionally not bottom. {"bottom", StyleVerticalAlignKeyword::Baseline}, {"center", StyleVerticalAlignKeyword::MozMiddleWithBaseline}, {"baseline", StyleVerticalAlignKeyword::Baseline}, {"texttop", StyleVerticalAlignKeyword::TextTop}, {"absmiddle", StyleVerticalAlignKeyword::Middle}, {"abscenter", StyleVerticalAlignKeyword::Middle}, {"absbottom", StyleVerticalAlignKeyword::Bottom}, {nullptr, 0}}; static_assert(uint8_t(StyleTextAlign::Left) != uint8_t(StyleVerticalAlignKeyword::Top) && uint8_t(StyleTextAlign::Left) != uint8_t(StyleVerticalAlignKeyword::MozMiddleWithBaseline) && uint8_t(StyleTextAlign::Left) != uint8_t(StyleVerticalAlignKeyword::Baseline) && uint8_t(StyleTextAlign::Left) != uint8_t(StyleVerticalAlignKeyword::TextTop) && uint8_t(StyleTextAlign::Left) != uint8_t(StyleVerticalAlignKeyword::Middle) && uint8_t(StyleTextAlign::Left) != uint8_t(StyleVerticalAlignKeyword::Bottom)); static_assert(uint8_t(StyleTextAlign::Right) != uint8_t(StyleVerticalAlignKeyword::Top) && uint8_t(StyleTextAlign::Right) != uint8_t(StyleVerticalAlignKeyword::MozMiddleWithBaseline) && uint8_t(StyleTextAlign::Right) != uint8_t(StyleVerticalAlignKeyword::Baseline) && uint8_t(StyleTextAlign::Right) != uint8_t(StyleVerticalAlignKeyword::TextTop) && uint8_t(StyleTextAlign::Right) != uint8_t(StyleVerticalAlignKeyword::Middle) && uint8_t(StyleTextAlign::Right) != uint8_t(StyleVerticalAlignKeyword::Bottom)); return aResult.ParseEnumValue(aString, kAlignTable, false); } //---------------------------------------- static const nsAttrValue::EnumTable kTableHAlignTable[] = { {"left", StyleTextAlign::Left}, {"right", StyleTextAlign::Right}, {"center", StyleTextAlign::Center}, {"char", StyleTextAlign::Char}, {"justify", StyleTextAlign::Justify}, {nullptr, 0}}; bool nsGenericHTMLElement::ParseTableHAlignValue(const nsAString& aString, nsAttrValue& aResult) { return aResult.ParseEnumValue(aString, kTableHAlignTable, false); } //---------------------------------------- // This table is used for td, th, tr, col, thead, tbody and tfoot. static const nsAttrValue::EnumTable kTableCellHAlignTable[] = { {"left", StyleTextAlign::MozLeft}, {"right", StyleTextAlign::MozRight}, {"center", StyleTextAlign::MozCenter}, {"char", StyleTextAlign::Char}, {"justify", StyleTextAlign::Justify}, {"middle", StyleTextAlign::MozCenter}, {"absmiddle", StyleTextAlign::Center}, {nullptr, 0}}; bool nsGenericHTMLElement::ParseTableCellHAlignValue(const nsAString& aString, nsAttrValue& aResult) { return aResult.ParseEnumValue(aString, kTableCellHAlignTable, false); } //---------------------------------------- bool nsGenericHTMLElement::ParseTableVAlignValue(const nsAString& aString, nsAttrValue& aResult) { return aResult.ParseEnumValue(aString, kTableVAlignTable, false); } bool nsGenericHTMLElement::ParseDivAlignValue(const nsAString& aString, nsAttrValue& aResult) { return aResult.ParseEnumValue(aString, kDivAlignTable, false); } bool nsGenericHTMLElement::ParseImageAttribute(nsAtom* aAttribute, const nsAString& aString, nsAttrValue& aResult) { if (aAttribute == nsGkAtoms::width || aAttribute == nsGkAtoms::height || aAttribute == nsGkAtoms::hspace || aAttribute == nsGkAtoms::vspace) { return aResult.ParseHTMLDimension(aString); } if (aAttribute == nsGkAtoms::border) { return aResult.ParseNonNegativeIntValue(aString); } return false; } bool nsGenericHTMLElement::ParseReferrerAttribute(const nsAString& aString, nsAttrValue& aResult) { using mozilla::dom::ReferrerInfo; static const nsAttrValue::EnumTable kReferrerPolicyTable[] = { {ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::No_referrer), static_cast(ReferrerPolicy::No_referrer)}, {ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Origin), static_cast(ReferrerPolicy::Origin)}, {ReferrerInfo::ReferrerPolicyToString( ReferrerPolicy::Origin_when_cross_origin), static_cast(ReferrerPolicy::Origin_when_cross_origin)}, {ReferrerInfo::ReferrerPolicyToString( ReferrerPolicy::No_referrer_when_downgrade), static_cast(ReferrerPolicy::No_referrer_when_downgrade)}, {ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Unsafe_url), static_cast(ReferrerPolicy::Unsafe_url)}, {ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Strict_origin), static_cast(ReferrerPolicy::Strict_origin)}, {ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Same_origin), static_cast(ReferrerPolicy::Same_origin)}, {ReferrerInfo::ReferrerPolicyToString( ReferrerPolicy::Strict_origin_when_cross_origin), static_cast(ReferrerPolicy::Strict_origin_when_cross_origin)}, {nullptr, ReferrerPolicy::_empty}}; return aResult.ParseEnumValue(aString, kReferrerPolicyTable, false); } bool nsGenericHTMLElement::ParseFrameborderValue(const nsAString& aString, nsAttrValue& aResult) { return aResult.ParseEnumValue(aString, kFrameborderTable, false); } bool nsGenericHTMLElement::ParseScrollingValue(const nsAString& aString, nsAttrValue& aResult) { return aResult.ParseEnumValue(aString, kScrollingTable, false); } static inline void MapLangAttributeInto(MappedDeclarationsBuilder& aBuilder) { const nsAttrValue* langValue = aBuilder.GetAttr(nsGkAtoms::lang); if (!langValue) { return; } MOZ_ASSERT(langValue->Type() == nsAttrValue::eAtom); aBuilder.SetIdentAtomValueIfUnset(eCSSProperty__x_lang, langValue->GetAtomValue()); if (!aBuilder.PropertyIsSet(eCSSProperty_text_emphasis_position)) { const nsAtom* lang = langValue->GetAtomValue(); if (nsStyleUtil::MatchesLanguagePrefix(lang, u"zh")) { aBuilder.SetKeywordValue(eCSSProperty_text_emphasis_position, StyleTextEmphasisPosition::UNDER._0); } else if (nsStyleUtil::MatchesLanguagePrefix(lang, u"ja") || nsStyleUtil::MatchesLanguagePrefix(lang, u"mn")) { // This branch is currently no part of the spec. // See bug 1040668 comment 69 and comment 75. aBuilder.SetKeywordValue(eCSSProperty_text_emphasis_position, StyleTextEmphasisPosition::OVER._0); } } } /** * Handle attributes common to all html elements */ void nsGenericHTMLElement::MapCommonAttributesIntoExceptHidden( MappedDeclarationsBuilder& aBuilder) { if (!aBuilder.PropertyIsSet(eCSSProperty__moz_user_modify)) { const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::contenteditable); if (value) { if (value->Equals(nsGkAtoms::_empty, eCaseMatters) || value->Equals(nsGkAtoms::_true, eIgnoreCase)) { aBuilder.SetKeywordValue(eCSSProperty__moz_user_modify, StyleUserModify::ReadWrite); } else if (value->Equals(nsGkAtoms::_false, eIgnoreCase)) { aBuilder.SetKeywordValue(eCSSProperty__moz_user_modify, StyleUserModify::ReadOnly); } } } MapLangAttributeInto(aBuilder); } void nsGenericHTMLElement::MapCommonAttributesInto( MappedDeclarationsBuilder& aBuilder) { MapCommonAttributesIntoExceptHidden(aBuilder); if (!aBuilder.PropertyIsSet(eCSSProperty_display)) { if (aBuilder.GetAttr(nsGkAtoms::hidden)) { aBuilder.SetKeywordValue(eCSSProperty_display, StyleDisplay::None._0); } } } /* static */ const nsGenericHTMLElement::MappedAttributeEntry nsGenericHTMLElement::sCommonAttributeMap[] = {{nsGkAtoms::contenteditable}, {nsGkAtoms::lang}, {nsGkAtoms::hidden}, {nullptr}}; /* static */ const Element::MappedAttributeEntry nsGenericHTMLElement::sImageMarginSizeAttributeMap[] = {{nsGkAtoms::width}, {nsGkAtoms::height}, {nsGkAtoms::hspace}, {nsGkAtoms::vspace}, {nullptr}}; /* static */ const Element::MappedAttributeEntry nsGenericHTMLElement::sImageAlignAttributeMap[] = {{nsGkAtoms::align}, {nullptr}}; /* static */ const Element::MappedAttributeEntry nsGenericHTMLElement::sDivAlignAttributeMap[] = {{nsGkAtoms::align}, {nullptr}}; /* static */ const Element::MappedAttributeEntry nsGenericHTMLElement::sImageBorderAttributeMap[] = {{nsGkAtoms::border}, {nullptr}}; /* static */ const Element::MappedAttributeEntry nsGenericHTMLElement::sBackgroundAttributeMap[] = { {nsGkAtoms::background}, {nsGkAtoms::bgcolor}, {nullptr}}; /* static */ const Element::MappedAttributeEntry nsGenericHTMLElement::sBackgroundColorAttributeMap[] = { {nsGkAtoms::bgcolor}, {nullptr}}; void nsGenericHTMLElement::MapImageAlignAttributeInto( MappedDeclarationsBuilder& aBuilder) { const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::align); if (value && value->Type() == nsAttrValue::eEnum) { int32_t align = value->GetEnumValue(); if (!aBuilder.PropertyIsSet(eCSSProperty_float)) { if (align == uint8_t(StyleTextAlign::Left)) { aBuilder.SetKeywordValue(eCSSProperty_float, StyleFloat::Left); } else if (align == uint8_t(StyleTextAlign::Right)) { aBuilder.SetKeywordValue(eCSSProperty_float, StyleFloat::Right); } } if (!aBuilder.PropertyIsSet(eCSSProperty_vertical_align)) { switch (align) { case uint8_t(StyleTextAlign::Left): case uint8_t(StyleTextAlign::Right): break; default: aBuilder.SetKeywordValue(eCSSProperty_vertical_align, align); break; } } } } void nsGenericHTMLElement::MapDivAlignAttributeInto( MappedDeclarationsBuilder& aBuilder) { if (!aBuilder.PropertyIsSet(eCSSProperty_text_align)) { // align: enum const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::align); if (value && value->Type() == nsAttrValue::eEnum) aBuilder.SetKeywordValue(eCSSProperty_text_align, value->GetEnumValue()); } } void nsGenericHTMLElement::MapVAlignAttributeInto( MappedDeclarationsBuilder& aBuilder) { if (!aBuilder.PropertyIsSet(eCSSProperty_vertical_align)) { // align: enum const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::valign); if (value && value->Type() == nsAttrValue::eEnum) aBuilder.SetKeywordValue(eCSSProperty_vertical_align, value->GetEnumValue()); } } void nsGenericHTMLElement::MapDimensionAttributeInto( MappedDeclarationsBuilder& aBuilder, nsCSSPropertyID aProp, const nsAttrValue& aValue) { MOZ_ASSERT(!aBuilder.PropertyIsSet(aProp), "Why mapping the same property twice?"); if (aValue.Type() == nsAttrValue::eInteger) { return aBuilder.SetPixelValue(aProp, aValue.GetIntegerValue()); } if (aValue.Type() == nsAttrValue::ePercent) { return aBuilder.SetPercentValue(aProp, aValue.GetPercentValue()); } if (aValue.Type() == nsAttrValue::eDoubleValue) { return aBuilder.SetPixelValue(aProp, aValue.GetDoubleValue()); } } void nsGenericHTMLElement::MapImageMarginAttributeInto( MappedDeclarationsBuilder& aBuilder) { // hspace: value if (const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::hspace)) { MapDimensionAttributeInto(aBuilder, eCSSProperty_margin_left, *value); MapDimensionAttributeInto(aBuilder, eCSSProperty_margin_right, *value); } // vspace: value if (const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::vspace)) { MapDimensionAttributeInto(aBuilder, eCSSProperty_margin_top, *value); MapDimensionAttributeInto(aBuilder, eCSSProperty_margin_bottom, *value); } } void nsGenericHTMLElement::MapWidthAttributeInto( MappedDeclarationsBuilder& aBuilder) { if (const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::width)) { MapDimensionAttributeInto(aBuilder, eCSSProperty_width, *value); } } void nsGenericHTMLElement::MapHeightAttributeInto( MappedDeclarationsBuilder& aBuilder) { if (const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::height)) { MapDimensionAttributeInto(aBuilder, eCSSProperty_height, *value); } } void nsGenericHTMLElement::DoMapAspectRatio( const nsAttrValue& aWidth, const nsAttrValue& aHeight, MappedDeclarationsBuilder& aBuilder) { Maybe w; if (aWidth.Type() == nsAttrValue::eInteger) { w.emplace(aWidth.GetIntegerValue()); } else if (aWidth.Type() == nsAttrValue::eDoubleValue) { w.emplace(aWidth.GetDoubleValue()); } Maybe h; if (aHeight.Type() == nsAttrValue::eInteger) { h.emplace(aHeight.GetIntegerValue()); } else if (aHeight.Type() == nsAttrValue::eDoubleValue) { h.emplace(aHeight.GetDoubleValue()); } if (w && h) { aBuilder.SetAspectRatio(*w, *h); } } void nsGenericHTMLElement::MapImageSizeAttributesInto( MappedDeclarationsBuilder& aBuilder, MapAspectRatio aMapAspectRatio) { auto* width = aBuilder.GetAttr(nsGkAtoms::width); auto* height = aBuilder.GetAttr(nsGkAtoms::height); if (width) { MapDimensionAttributeInto(aBuilder, eCSSProperty_width, *width); } if (height) { MapDimensionAttributeInto(aBuilder, eCSSProperty_height, *height); } if (aMapAspectRatio == MapAspectRatio::Yes && width && height) { DoMapAspectRatio(*width, *height, aBuilder); } } void nsGenericHTMLElement::MapAspectRatioInto( MappedDeclarationsBuilder& aBuilder) { auto* width = aBuilder.GetAttr(nsGkAtoms::width); auto* height = aBuilder.GetAttr(nsGkAtoms::height); if (width && height) { DoMapAspectRatio(*width, *height, aBuilder); } } void nsGenericHTMLElement::MapImageBorderAttributeInto( MappedDeclarationsBuilder& aBuilder) { // border: pixels const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::border); if (!value) return; nscoord val = 0; if (value->Type() == nsAttrValue::eInteger) val = value->GetIntegerValue(); aBuilder.SetPixelValueIfUnset(eCSSProperty_border_top_width, (float)val); aBuilder.SetPixelValueIfUnset(eCSSProperty_border_right_width, (float)val); aBuilder.SetPixelValueIfUnset(eCSSProperty_border_bottom_width, (float)val); aBuilder.SetPixelValueIfUnset(eCSSProperty_border_left_width, (float)val); aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_top_style, StyleBorderStyle::Solid); aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_right_style, StyleBorderStyle::Solid); aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_bottom_style, StyleBorderStyle::Solid); aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_left_style, StyleBorderStyle::Solid); aBuilder.SetCurrentColorIfUnset(eCSSProperty_border_top_color); aBuilder.SetCurrentColorIfUnset(eCSSProperty_border_right_color); aBuilder.SetCurrentColorIfUnset(eCSSProperty_border_bottom_color); aBuilder.SetCurrentColorIfUnset(eCSSProperty_border_left_color); } void nsGenericHTMLElement::MapBackgroundInto( MappedDeclarationsBuilder& aBuilder) { if (!aBuilder.PropertyIsSet(eCSSProperty_background_image)) { // background if (const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::background)) { aBuilder.SetBackgroundImage(*value); } } } void nsGenericHTMLElement::MapBGColorInto(MappedDeclarationsBuilder& aBuilder) { if (aBuilder.PropertyIsSet(eCSSProperty_background_color)) { return; } const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::bgcolor); nscolor color; if (value && value->GetColorValue(color)) { aBuilder.SetColorValue(eCSSProperty_background_color, color); } } void nsGenericHTMLElement::MapBackgroundAttributesInto( MappedDeclarationsBuilder& aBuilder) { MapBackgroundInto(aBuilder); MapBGColorInto(aBuilder); } //---------------------------------------------------------------------- int32_t nsGenericHTMLElement::GetIntAttr(nsAtom* aAttr, int32_t aDefault) const { const nsAttrValue* attrVal = mAttrs.GetAttr(aAttr); if (attrVal && attrVal->Type() == nsAttrValue::eInteger) { return attrVal->GetIntegerValue(); } return aDefault; } nsresult nsGenericHTMLElement::SetIntAttr(nsAtom* aAttr, int32_t aValue) { nsAutoString value; value.AppendInt(aValue); return SetAttr(kNameSpaceID_None, aAttr, value, true); } uint32_t nsGenericHTMLElement::GetUnsignedIntAttr(nsAtom* aAttr, uint32_t aDefault) const { const nsAttrValue* attrVal = mAttrs.GetAttr(aAttr); if (!attrVal || attrVal->Type() != nsAttrValue::eInteger) { return aDefault; } return attrVal->GetIntegerValue(); } uint32_t nsGenericHTMLElement::GetDimensionAttrAsUnsignedInt( nsAtom* aAttr, uint32_t aDefault) const { const nsAttrValue* attrVal = mAttrs.GetAttr(aAttr); if (!attrVal) { return aDefault; } if (attrVal->Type() == nsAttrValue::eInteger) { return attrVal->GetIntegerValue(); } if (attrVal->Type() == nsAttrValue::ePercent) { // This is a nasty hack. When we parsed the value, we stored it as an // ePercent, not eInteger, because there was a '%' after it in the string. // But the spec says to basically re-parse the string as an integer. // Luckily, we can just return the value we have stored. But // GetPercentValue() divides it by 100, so we need to multiply it back. return uint32_t(attrVal->GetPercentValue() * 100.0f); } if (attrVal->Type() == nsAttrValue::eDoubleValue) { return uint32_t(attrVal->GetDoubleValue()); } // Unfortunately, the set of values that are valid dimensions is not a // superset of values that are valid unsigned ints. In particular "+100" is // not a valid dimension, but should parse as the unsigned int "100". So if // we got here and we don't have a valid dimension value, just try re-parsing // the string we have as an integer. nsAutoString val; attrVal->ToString(val); nsContentUtils::ParseHTMLIntegerResultFlags result; int32_t parsedInt = nsContentUtils::ParseHTMLInteger(val, &result); if ((result & nsContentUtils::eParseHTMLInteger_Error) || parsedInt < 0) { return aDefault; } return parsedInt; } void nsGenericHTMLElement::GetURIAttr(nsAtom* aAttr, nsAtom* aBaseAttr, nsAString& aResult) const { nsCOMPtr uri; bool hadAttr = GetURIAttr(aAttr, aBaseAttr, getter_AddRefs(uri)); if (!hadAttr) { aResult.Truncate(); return; } if (!uri) { // Just return the attr value GetAttr(aAttr, aResult); return; } nsAutoCString spec; uri->GetSpec(spec); CopyUTF8toUTF16(spec, aResult); } bool nsGenericHTMLElement::GetURIAttr(nsAtom* aAttr, nsAtom* aBaseAttr, nsIURI** aURI) const { *aURI = nullptr; const nsAttrValue* attr = mAttrs.GetAttr(aAttr); if (!attr) { return false; } nsCOMPtr baseURI = GetBaseURI(); if (aBaseAttr) { nsAutoString baseAttrValue; if (GetAttr(aBaseAttr, baseAttrValue)) { nsCOMPtr baseAttrURI; nsresult rv = nsContentUtils::NewURIWithDocumentCharset( getter_AddRefs(baseAttrURI), baseAttrValue, OwnerDoc(), baseURI); if (NS_FAILED(rv)) { return true; } baseURI.swap(baseAttrURI); } } // Don't care about return value. If it fails, we still want to // return true, and *aURI will be null. nsContentUtils::NewURIWithDocumentCharset(aURI, attr->GetStringValue(), OwnerDoc(), baseURI); return true; } bool nsGenericHTMLElement::IsLabelable() const { return IsAnyOfHTMLElements(nsGkAtoms::progress, nsGkAtoms::meter); } /* static */ bool nsGenericHTMLElement::MatchLabelsElement(Element* aElement, int32_t aNamespaceID, nsAtom* aAtom, void* aData) { HTMLLabelElement* element = HTMLLabelElement::FromNode(aElement); return element && element->GetControl() == aData; } already_AddRefed nsGenericHTMLElement::Labels() { MOZ_ASSERT(IsLabelable(), "Labels() only allow labelable elements to use it."); nsExtendedDOMSlots* slots = ExtendedDOMSlots(); if (!slots->mLabelsList) { slots->mLabelsList = new nsLabelsNodeList(SubtreeRoot(), MatchLabelsElement, nullptr, this); } RefPtr labels = slots->mLabelsList; return labels.forget(); } // static bool nsGenericHTMLElement::LegacyTouchAPIEnabled(JSContext* aCx, JSObject* aGlobal) { return TouchEvent::LegacyAPIEnabled(aCx, aGlobal); } bool nsGenericHTMLElement::IsFormControlDefaultFocusable( bool aWithMouse) const { if (!aWithMouse) { return true; } switch (StaticPrefs::accessibility_mouse_focuses_formcontrol()) { case 0: return false; case 1: return true; default: return !IsInChromeDocument(); } } //---------------------------------------------------------------------- nsGenericHTMLFormElement::nsGenericHTMLFormElement( already_AddRefed&& aNodeInfo) : nsGenericHTMLElement(std::move(aNodeInfo)) { // We should add the ElementState::ENABLED bit here as needed, but that // depends on our type, which is not initialized yet. So we have to do this // in subclasses. Same for a couple other bits. } void nsGenericHTMLFormElement::ClearForm(bool aRemoveFromForm, bool aUnbindOrDelete) { MOZ_ASSERT(IsFormAssociatedElement()); HTMLFormElement* form = GetFormInternal(); NS_ASSERTION((form != nullptr) == HasFlag(ADDED_TO_FORM), "Form control should have had flag set correctly"); if (!form) { return; } if (aRemoveFromForm) { nsAutoString nameVal, idVal; GetAttr(nsGkAtoms::name, nameVal); GetAttr(nsGkAtoms::id, idVal); form->RemoveElement(this, true); if (!nameVal.IsEmpty()) { form->RemoveElementFromTable(this, nameVal); } if (!idVal.IsEmpty()) { form->RemoveElementFromTable(this, idVal); } } UnsetFlags(ADDED_TO_FORM); SetFormInternal(nullptr, false); AfterClearForm(aUnbindOrDelete); } nsresult nsGenericHTMLFormElement::BindToTree(BindContext& aContext, nsINode& aParent) { nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent); NS_ENSURE_SUCCESS(rv, rv); if (IsFormAssociatedElement()) { // If @form is set, the element *has* to be in a composed document, // otherwise it wouldn't be possible to find an element with the // corresponding id. If @form isn't set, the element *has* to have a parent, // otherwise it wouldn't be possible to find a form ancestor. We should not // call UpdateFormOwner if none of these conditions are fulfilled. if (HasAttr(nsGkAtoms::form) ? IsInComposedDoc() : aParent.IsContent()) { UpdateFormOwner(true, nullptr); } } // Set parent fieldset which should be used for the disabled state. UpdateFieldSet(false); return NS_OK; } void nsGenericHTMLFormElement::UnbindFromTree(bool aNullParent) { // Save state before doing anything else. SaveState(); if (IsFormAssociatedElement()) { if (HTMLFormElement* form = GetFormInternal()) { // Might need to unset form if (aNullParent) { // No more parent means no more form ClearForm(true, true); } else { // Recheck whether we should still have an form. if (HasAttr(nsGkAtoms::form) || !FindAncestorForm(form)) { ClearForm(true, true); } else { UnsetFlags(MAYBE_ORPHAN_FORM_ELEMENT); } } } // We have to remove the form id observer if there was one. // We will re-add one later if needed (during bind to tree). if (nsContentUtils::HasNonEmptyAttr(this, kNameSpaceID_None, nsGkAtoms::form)) { RemoveFormIdObserver(); } } nsGenericHTMLElement::UnbindFromTree(aNullParent); // The element might not have a fieldset anymore. UpdateFieldSet(false); } void nsGenericHTMLFormElement::BeforeSetAttr(int32_t aNameSpaceID, nsAtom* aName, const nsAttrValue* aValue, bool aNotify) { if (aNameSpaceID == kNameSpaceID_None && IsFormAssociatedElement()) { nsAutoString tmp; HTMLFormElement* form = GetFormInternal(); // remove the control from the hashtable as needed if (form && (aName == nsGkAtoms::name || aName == nsGkAtoms::id)) { GetAttr(aName, tmp); if (!tmp.IsEmpty()) { form->RemoveElementFromTable(this, tmp); } } if (form && aName == nsGkAtoms::type) { GetAttr(nsGkAtoms::name, tmp); if (!tmp.IsEmpty()) { form->RemoveElementFromTable(this, tmp); } GetAttr(nsGkAtoms::id, tmp); if (!tmp.IsEmpty()) { form->RemoveElementFromTable(this, tmp); } form->RemoveElement(this, false); } if (aName == nsGkAtoms::form) { // If @form isn't set or set to the empty string, there were no observer // so we don't have to remove it. if (nsContentUtils::HasNonEmptyAttr(this, kNameSpaceID_None, nsGkAtoms::form)) { // The current form id observer is no longer needed. // A new one may be added in AfterSetAttr. RemoveFormIdObserver(); } } } return nsGenericHTMLElement::BeforeSetAttr(aNameSpaceID, aName, aValue, aNotify); } void nsGenericHTMLFormElement::AfterSetAttr( int32_t aNameSpaceID, nsAtom* aName, const nsAttrValue* aValue, const nsAttrValue* aOldValue, nsIPrincipal* aMaybeScriptedPrincipal, bool aNotify) { if (aNameSpaceID == kNameSpaceID_None && IsFormAssociatedElement()) { HTMLFormElement* form = GetFormInternal(); // add the control to the hashtable as needed if (form && (aName == nsGkAtoms::name || aName == nsGkAtoms::id) && aValue && !aValue->IsEmptyString()) { MOZ_ASSERT(aValue->Type() == nsAttrValue::eAtom, "Expected atom value for name/id"); form->AddElementToTable(this, nsDependentAtomString(aValue->GetAtomValue())); } if (form && aName == nsGkAtoms::type) { nsAutoString tmp; GetAttr(nsGkAtoms::name, tmp); if (!tmp.IsEmpty()) { form->AddElementToTable(this, tmp); } GetAttr(nsGkAtoms::id, tmp); if (!tmp.IsEmpty()) { form->AddElementToTable(this, tmp); } form->AddElement(this, false, aNotify); } if (aName == nsGkAtoms::form) { // We need a new form id observer. DocumentOrShadowRoot* docOrShadow = GetUncomposedDocOrConnectedShadowRoot(); if (docOrShadow) { Element* formIdElement = nullptr; if (aValue && !aValue->IsEmptyString()) { formIdElement = AddFormIdObserver(); } // Because we have a new @form value (or no more @form), we have to // update our form owner. UpdateFormOwner(false, formIdElement); } } } return nsGenericHTMLElement::AfterSetAttr( aNameSpaceID, aName, aValue, aOldValue, aMaybeScriptedPrincipal, aNotify); } void nsGenericHTMLFormElement::ForgetFieldSet(nsIContent* aFieldset) { MOZ_DIAGNOSTIC_ASSERT(IsFormAssociatedElement()); if (GetFieldSetInternal() == aFieldset) { SetFieldSetInternal(nullptr); } } Element* nsGenericHTMLFormElement::AddFormIdObserver() { MOZ_ASSERT(IsFormAssociatedElement()); nsAutoString formId; DocumentOrShadowRoot* docOrShadow = GetUncomposedDocOrConnectedShadowRoot(); GetAttr(nsGkAtoms::form, formId); NS_ASSERTION(!formId.IsEmpty(), "@form value should not be the empty string!"); RefPtr atom = NS_Atomize(formId); return docOrShadow->AddIDTargetObserver(atom, FormIdUpdated, this, false); } void nsGenericHTMLFormElement::RemoveFormIdObserver() { MOZ_ASSERT(IsFormAssociatedElement()); DocumentOrShadowRoot* docOrShadow = GetUncomposedDocOrConnectedShadowRoot(); if (!docOrShadow) { return; } nsAutoString formId; GetAttr(nsGkAtoms::form, formId); NS_ASSERTION(!formId.IsEmpty(), "@form value should not be the empty string!"); RefPtr atom = NS_Atomize(formId); docOrShadow->RemoveIDTargetObserver(atom, FormIdUpdated, this, false); } /* static */ bool nsGenericHTMLFormElement::FormIdUpdated(Element* aOldElement, Element* aNewElement, void* aData) { nsGenericHTMLFormElement* element = static_cast(aData); NS_ASSERTION(element->IsHTMLElement(), "aData should be an HTML element"); element->UpdateFormOwner(false, aNewElement); return true; } bool nsGenericHTMLFormElement::IsElementDisabledForEvents(WidgetEvent* aEvent, nsIFrame* aFrame) { MOZ_ASSERT(aEvent); // Allow dispatch of CustomEvent and untrusted Events. if (!aEvent->IsTrusted()) { return false; } switch (aEvent->mMessage) { case eAnimationStart: case eAnimationEnd: case eAnimationIteration: case eAnimationCancel: case eFormChange: case eMouseMove: case eMouseOver: case eMouseOut: case eMouseEnter: case eMouseLeave: case ePointerMove: case ePointerOver: case ePointerOut: case ePointerEnter: case ePointerLeave: case eTransitionCancel: case eTransitionEnd: case eTransitionRun: case eTransitionStart: case eWheel: case eLegacyMouseLineOrPageScroll: case eLegacyMousePixelScroll: return false; case eFocus: case eBlur: case eFocusIn: case eFocusOut: case eKeyPress: case eKeyUp: case eKeyDown: if (StaticPrefs::dom_forms_always_allow_key_and_focus_events_enabled()) { return false; } [[fallthrough]]; case ePointerDown: case ePointerUp: case ePointerCancel: case ePointerGotCapture: case ePointerLostCapture: if (StaticPrefs::dom_forms_always_allow_pointer_events_enabled()) { return false; } [[fallthrough]]; default: break; } if (aEvent->mSpecifiedEventType == nsGkAtoms::oninput) { return false; } // FIXME(emilio): This poking at the style of the frame is slightly bogus // unless we flush before every event, which we don't really want to do. if (aFrame && aFrame->StyleUI()->UserInput() == StyleUserInput::None) { return true; } return IsDisabled(); } void nsGenericHTMLFormElement::UpdateFormOwner(bool aBindToTree, Element* aFormIdElement) { MOZ_ASSERT(IsFormAssociatedElement()); MOZ_ASSERT(!aBindToTree || !aFormIdElement, "aFormIdElement shouldn't be set if aBindToTree is true!"); HTMLFormElement* form = GetFormInternal(); if (!aBindToTree) { ClearForm(true, false); form = nullptr; } HTMLFormElement* oldForm = form; if (!form) { // If @form is set, we have to use that to find the form. nsAutoString formId; if (GetAttr(nsGkAtoms::form, formId)) { if (!formId.IsEmpty()) { Element* element = nullptr; if (aBindToTree) { element = AddFormIdObserver(); } else { element = aFormIdElement; } NS_ASSERTION(!IsInComposedDoc() || element == GetUncomposedDocOrConnectedShadowRoot() ->GetElementById(formId), "element should be equals to the current element " "associated with the id in @form!"); if (element && element->IsHTMLElement(nsGkAtoms::form) && nsContentUtils::IsInSameAnonymousTree(this, element)) { form = static_cast(element); SetFormInternal(form, aBindToTree); } } } else { // We now have a parent, so we may have picked up an ancestor form. Search // for it. Note that if form is already set we don't want to do this, // because that means someone (probably the content sink) has already set // it to the right value. Also note that even if being bound here didn't // change our parent, we still need to search, since our parent chain // probably changed _somewhere_. form = FindAncestorForm(); SetFormInternal(form, aBindToTree); } } if (form && !HasFlag(ADDED_TO_FORM)) { // Now we need to add ourselves to the form nsAutoString nameVal, idVal; GetAttr(nsGkAtoms::name, nameVal); GetAttr(nsGkAtoms::id, idVal); SetFlags(ADDED_TO_FORM); // Notify only if we just found this form. form->AddElement(this, true, oldForm == nullptr); if (!nameVal.IsEmpty()) { form->AddElementToTable(this, nameVal); } if (!idVal.IsEmpty()) { form->AddElementToTable(this, idVal); } } } void nsGenericHTMLFormElement::UpdateFieldSet(bool aNotify) { if (IsInNativeAnonymousSubtree() || !IsFormAssociatedElement()) { MOZ_ASSERT_IF(IsFormAssociatedElement(), !GetFieldSetInternal()); return; } nsIContent* parent = nullptr; nsIContent* prev = nullptr; HTMLFieldSetElement* fieldset = GetFieldSetInternal(); for (parent = GetParent(); parent; prev = parent, parent = parent->GetParent()) { HTMLFieldSetElement* parentFieldset = HTMLFieldSetElement::FromNode(parent); if (parentFieldset && (!prev || parentFieldset->GetFirstLegend() != prev)) { if (fieldset == parentFieldset) { // We already have the right fieldset; return; } if (fieldset) { fieldset->RemoveElement(this); } SetFieldSetInternal(parentFieldset); parentFieldset->AddElement(this); // The disabled state may have changed FieldSetDisabledChanged(aNotify); return; } } // No fieldset found. if (fieldset) { fieldset->RemoveElement(this); SetFieldSetInternal(nullptr); // The disabled state may have changed FieldSetDisabledChanged(aNotify); } } void nsGenericHTMLFormElement::UpdateDisabledState(bool aNotify) { if (!CanBeDisabled()) { return; } HTMLFieldSetElement* fieldset = GetFieldSetInternal(); const bool isDisabled = HasAttr(nsGkAtoms::disabled) || (fieldset && fieldset->IsDisabled()); const ElementState disabledStates = isDisabled ? ElementState::DISABLED : ElementState::ENABLED; ElementState oldDisabledStates = State() & ElementState::DISABLED_STATES; ElementState changedStates = disabledStates ^ oldDisabledStates; if (!changedStates.IsEmpty()) { ToggleStates(changedStates, aNotify); if (DoesReadOnlyApply()) { // :disabled influences :read-only / :read-write. UpdateReadOnlyState(aNotify); } } } bool nsGenericHTMLFormElement::IsReadOnlyInternal() const { if (DoesReadOnlyApply()) { return IsDisabled() || GetBoolAttr(nsGkAtoms::readonly); } return nsGenericHTMLElement::IsReadOnlyInternal(); } void nsGenericHTMLFormElement::FieldSetDisabledChanged(bool aNotify) { UpdateDisabledState(aNotify); } void nsGenericHTMLFormElement::SaveSubtreeState() { SaveState(); nsGenericHTMLElement::SaveSubtreeState(); } //---------------------------------------------------------------------- void nsGenericHTMLElement::Click(CallerType aCallerType) { if (HandlingClick()) { return; } // There are two notions of disabled. // "disabled": // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#attr-fe-disabled // "actually disabled": // https://html.spec.whatwg.org/multipage/semantics-other.html#concept-element-disabled // click() reads the former but IsDisabled() is for the latter.
is // included only in the latter, so we exclude it here. // XXX(krosylight): What about ? And should we add a separate method // for this? if (IsDisabled() && !(mNodeInfo->Equals(nsGkAtoms::fieldset) && StaticPrefs::dom_forms_fieldset_disable_only_descendants_enabled())) { return; } // Strong in case the event kills it nsCOMPtr doc = GetComposedDoc(); RefPtr context; if (doc) { PresShell* presShell = doc->GetPresShell(); if (!presShell) { // We need the nsPresContext for dispatching the click event. In some // rare cases we need to flush notifications to force creation of the // nsPresContext here (for example when a script calls button.click() // from script early during page load). We only flush the notifications // if the PresShell hasn't been created yet, to limit the performance // impact. doc->FlushPendingNotifications(FlushType::EnsurePresShellInitAndFrames); presShell = doc->GetPresShell(); } if (presShell) { context = presShell->GetPresContext(); } } SetHandlingClick(); // Mark this event trusted if Click() is called from system code. WidgetMouseEvent event(aCallerType == CallerType::System, eMouseClick, nullptr, WidgetMouseEvent::eReal); event.mFlags.mIsPositionless = true; event.mInputSource = MouseEvent_Binding::MOZ_SOURCE_UNKNOWN; EventDispatcher::Dispatch(this, context, &event); ClearHandlingClick(); } bool nsGenericHTMLElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable, int32_t* aTabIndex) { MOZ_ASSERT(aIsFocusable); MOZ_ASSERT(aTabIndex); if (ShadowRoot* root = GetShadowRoot()) { if (root->DelegatesFocus()) { *aIsFocusable = false; return true; } } if (!IsInComposedDoc() || IsInDesignMode()) { // In designMode documents we only allow focusing the document. *aTabIndex = -1; *aIsFocusable = false; return true; } *aTabIndex = TabIndex(); bool disabled = false; bool disallowOverridingFocusability = true; Maybe attrVal = GetTabIndexAttrValue(); if (IsEditingHost()) { // Editable roots should always be focusable. disallowOverridingFocusability = true; // Ignore the disabled attribute in editable contentEditable/designMode // roots. if (attrVal.isNothing()) { // The default value for tabindex should be 0 for editable // contentEditable roots. *aTabIndex = 0; } } else { disallowOverridingFocusability = false; // Just check for disabled attribute on form controls disabled = IsDisabled(); if (disabled) { *aTabIndex = -1; } } // If a tabindex is specified at all, or the default tabindex is 0, we're // focusable. *aIsFocusable = (*aTabIndex >= 0 || (!disabled && attrVal.isSome())); return disallowOverridingFocusability; } Result nsGenericHTMLElement::PerformAccesskey( bool aKeyCausesActivation, bool aIsTrustedEvent) { RefPtr presContext = GetPresContext(eForComposedDoc); if (!presContext) { return Err(NS_ERROR_UNEXPECTED); } // It's hard to say what HTML4 wants us to do in all cases. bool focused = true; if (RefPtr fm = nsFocusManager::GetFocusManager()) { fm->SetFocus(this, nsIFocusManager::FLAG_BYKEY); // Return true if the element became the current focus within its window. nsPIDOMWindowOuter* window = OwnerDoc()->GetWindow(); focused = window && window->GetFocusedElement() == this; } if (aKeyCausesActivation) { // Click on it if the users prefs indicate to do so. AutoHandlingUserInputStatePusher userInputStatePusher(aIsTrustedEvent); AutoPopupStatePusher popupStatePusher( aIsTrustedEvent ? PopupBlocker::openAllowed : PopupBlocker::openAbused); DispatchSimulatedClick(this, aIsTrustedEvent, presContext); return focused; } // If the accesskey won't cause the activation and the focus isn't changed, // either. Return error so EventStateManager would try to find next element // to handle the accesskey. return focused ? Result{focused} : Err(NS_ERROR_ABORT); } void nsGenericHTMLElement::HandleKeyboardActivation( EventChainPostVisitor& aVisitor) { MOZ_ASSERT(aVisitor.mEvent->HasKeyEventMessage()); MOZ_ASSERT(aVisitor.mEvent->IsTrusted()); // If focused element is different from this element, it may be editable. // In that case, associated editor for the element should handle the keyboard // instead. Therefore, if this is not the focused element, we should not // handle the event here. Note that this element may be an editing host, // i.e., focused and editable. In the case, keyboard events should be // handled by the focused element instead of associated editor because // Chrome handles the case so. For compatibility with Chrome, we follow them. if (nsFocusManager::GetFocusedElementStatic() != this) { return; } const auto message = aVisitor.mEvent->mMessage; const WidgetKeyboardEvent* keyEvent = aVisitor.mEvent->AsKeyboardEvent(); if (nsEventStatus_eIgnore != aVisitor.mEventStatus) { if (message == eKeyUp && keyEvent->mKeyCode == NS_VK_SPACE) { // Unset the flag even if the event is default-prevented or something. UnsetFlags(HTML_ELEMENT_ACTIVE_FOR_KEYBOARD); } return; } bool shouldActivate = false; switch (message) { case eKeyDown: if (keyEvent->ShouldWorkAsSpaceKey()) { SetFlags(HTML_ELEMENT_ACTIVE_FOR_KEYBOARD); } return; case eKeyPress: shouldActivate = keyEvent->mKeyCode == NS_VK_RETURN; if (keyEvent->ShouldWorkAsSpaceKey()) { // Consume 'space' key to prevent scrolling the page down. aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault; } break; case eKeyUp: shouldActivate = keyEvent->ShouldWorkAsSpaceKey() && HasFlag(HTML_ELEMENT_ACTIVE_FOR_KEYBOARD); if (shouldActivate) { UnsetFlags(HTML_ELEMENT_ACTIVE_FOR_KEYBOARD); } break; default: MOZ_ASSERT_UNREACHABLE("why didn't we bail out earlier?"); break; } if (!shouldActivate) { return; } RefPtr presContext = aVisitor.mPresContext; DispatchSimulatedClick(this, aVisitor.mEvent->IsTrusted(), presContext); aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault; } nsresult nsGenericHTMLElement::DispatchSimulatedClick( nsGenericHTMLElement* aElement, bool aIsTrusted, nsPresContext* aPresContext) { WidgetMouseEvent event(aIsTrusted, eMouseClick, nullptr, WidgetMouseEvent::eReal); event.mInputSource = MouseEvent_Binding::MOZ_SOURCE_KEYBOARD; event.mFlags.mIsPositionless = true; return EventDispatcher::Dispatch(aElement, aPresContext, &event); } already_AddRefed nsGenericHTMLElement::GetAssociatedEditor() { // If contenteditable is ever implemented, it might need to do something // different here? RefPtr textEditor = GetTextEditorInternal(); return textEditor.forget(); } // static void nsGenericHTMLElement::SyncEditorsOnSubtree(nsIContent* content) { /* Sync this node */ nsGenericHTMLElement* element = FromNode(content); if (element) { if (RefPtr editorBase = element->GetAssociatedEditor()) { editorBase->SyncRealTimeSpell(); } } /* Sync all children */ for (nsIContent* child = content->GetFirstChild(); child; child = child->GetNextSibling()) { SyncEditorsOnSubtree(child); } } static void MakeContentDescendantsEditable(nsIContent* aContent) { // If aContent is not an element, we just need to update its // internal editable state and don't need to notify anyone about // that. For elements, we need to send a ElementStateChanged // notification. if (!aContent->IsElement()) { aContent->UpdateEditableState(false); return; } Element* element = aContent->AsElement(); element->UpdateEditableState(true); for (nsIContent* child = aContent->GetFirstChild(); child; child = child->GetNextSibling()) { if (!child->IsElement() || !child->AsElement()->HasAttr(nsGkAtoms::contenteditable)) { MakeContentDescendantsEditable(child); } } } void nsGenericHTMLElement::ChangeEditableState(int32_t aChange) { Document* document = GetComposedDoc(); if (!document) { return; } Document::EditingState previousEditingState = Document::EditingState::eOff; if (aChange != 0) { document->ChangeContentEditableCount(this, aChange); previousEditingState = document->GetEditingState(); } // MakeContentDescendantsEditable is going to call ElementStateChanged for // this element and all descendants if editable state has changed. // We might as well wrap it all in one script blocker. nsAutoScriptBlocker scriptBlocker; MakeContentDescendantsEditable(this); // If the document already had contenteditable and JS adds new // contenteditable, that might cause changing editing host to current editing // host's ancestor. In such case, HTMLEditor needs to know that // synchronously to update selection limitter. // Additionally, elements in shadow DOM is not editable in the normal cases, // but if its content has `contenteditable`, only in it can be ediable. // So we don't need to notify HTMLEditor of this change only when we're not // in shadow DOM and the composed document is in design mode. if (IsInDesignMode() && !IsInShadowTree() && aChange > 0 && previousEditingState == Document::EditingState::eContentEditable) { if (HTMLEditor* htmlEditor = nsContentUtils::GetHTMLEditor(document->GetPresContext())) { htmlEditor->NotifyEditingHostMaybeChanged(); } } } //---------------------------------------------------------------------- nsGenericHTMLFormControlElement::nsGenericHTMLFormControlElement( already_AddRefed&& aNodeInfo, FormControlType aType) : nsGenericHTMLFormElement(std::move(aNodeInfo)), nsIFormControl(aType), mForm(nullptr), mFieldSet(nullptr) {} nsGenericHTMLFormControlElement::~nsGenericHTMLFormControlElement() { if (mFieldSet) { mFieldSet->RemoveElement(this); } // Check that this element doesn't know anything about its form at this point. NS_ASSERTION(!mForm, "mForm should be null at this point!"); } NS_IMPL_ISUPPORTS_INHERITED(nsGenericHTMLFormControlElement, nsGenericHTMLFormElement, nsIFormControl) nsINode* nsGenericHTMLFormControlElement::GetScopeChainParent() const { return mForm ? mForm : nsGenericHTMLElement::GetScopeChainParent(); } nsIContent::IMEState nsGenericHTMLFormControlElement::GetDesiredIMEState() { TextEditor* textEditor = GetTextEditorInternal(); if (!textEditor) { return nsGenericHTMLFormElement::GetDesiredIMEState(); } IMEState state; nsresult rv = textEditor->GetPreferredIMEState(&state); if (NS_FAILED(rv)) { return nsGenericHTMLFormElement::GetDesiredIMEState(); } return state; } void nsGenericHTMLFormControlElement::GetAutocapitalize( nsAString& aValue) const { if (nsContentUtils::HasNonEmptyAttr(this, kNameSpaceID_None, nsGkAtoms::autocapitalize)) { nsGenericHTMLFormElement::GetAutocapitalize(aValue); return; } if (mForm && IsAutocapitalizeInheriting()) { mForm->GetAutocapitalize(aValue); } } bool nsGenericHTMLFormControlElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable, int32_t* aTabIndex) { if (nsGenericHTMLFormElement::IsHTMLFocusable(aWithMouse, aIsFocusable, aTabIndex)) { return true; } *aIsFocusable = *aIsFocusable && IsFormControlDefaultFocusable(aWithMouse); return false; } void nsGenericHTMLFormControlElement::GetEventTargetParent( EventChainPreVisitor& aVisitor) { if (aVisitor.mEvent->IsTrusted() && (aVisitor.mEvent->mMessage == eFocus || aVisitor.mEvent->mMessage == eBlur)) { // We have to handle focus/blur event to change focus states in // PreHandleEvent to prevent it breaks event target chain creation. aVisitor.mWantsPreHandleEvent = true; } nsGenericHTMLFormElement::GetEventTargetParent(aVisitor); } nsresult nsGenericHTMLFormControlElement::PreHandleEvent( EventChainVisitor& aVisitor) { if (aVisitor.mEvent->IsTrusted()) { switch (aVisitor.mEvent->mMessage) { case eFocus: { // Check to see if focus has bubbled up from a form control's // child textfield or button. If that's the case, don't focus // this parent file control -- leave focus on the child. nsIFormControlFrame* formControlFrame = GetFormControlFrame(true); if (formControlFrame && aVisitor.mEvent->mOriginalTarget == static_cast(this)) { formControlFrame->SetFocus(true, true); } break; } case eBlur: { nsIFormControlFrame* formControlFrame = GetFormControlFrame(true); if (formControlFrame) { formControlFrame->SetFocus(false, false); } break; } default: break; } } return nsGenericHTMLFormElement::PreHandleEvent(aVisitor); } HTMLFieldSetElement* nsGenericHTMLFormControlElement::GetFieldSet() { return GetFieldSetInternal(); } void nsGenericHTMLFormControlElement::SetForm(HTMLFormElement* aForm) { MOZ_ASSERT(aForm, "Don't pass null here"); NS_ASSERTION(!mForm, "We don't support switching from one non-null form to another."); SetFormInternal(aForm, false); } void nsGenericHTMLFormControlElement::ClearForm(bool aRemoveFromForm, bool aUnbindOrDelete) { nsGenericHTMLFormElement::ClearForm(aRemoveFromForm, aUnbindOrDelete); } bool nsGenericHTMLFormControlElement::IsLabelable() const { auto type = ControlType(); return (IsInputElement(type) && type != FormControlType::InputHidden) || IsButtonElement(type) || type == FormControlType::Output || type == FormControlType::Select || type == FormControlType::Textarea; } bool nsGenericHTMLFormControlElement::CanBeDisabled() const { auto type = ControlType(); // It's easier to test the types that _cannot_ be disabled return type != FormControlType::Object && type != FormControlType::Output; } bool nsGenericHTMLFormControlElement::DoesReadOnlyApply() const { auto type = ControlType(); if (!IsInputElement(type) && type != FormControlType::Textarea) { return false; } switch (type) { case FormControlType::InputHidden: case FormControlType::InputButton: case FormControlType::InputImage: case FormControlType::InputReset: case FormControlType::InputSubmit: case FormControlType::InputRadio: case FormControlType::InputFile: case FormControlType::InputCheckbox: case FormControlType::InputRange: case FormControlType::InputColor: return false; #ifdef DEBUG case FormControlType::Textarea: case FormControlType::InputText: case FormControlType::InputPassword: case FormControlType::InputSearch: case FormControlType::InputTel: case FormControlType::InputEmail: case FormControlType::InputUrl: case FormControlType::InputNumber: case FormControlType::InputDate: case FormControlType::InputTime: case FormControlType::InputMonth: case FormControlType::InputWeek: case FormControlType::InputDatetimeLocal: return true; default: MOZ_ASSERT_UNREACHABLE("Unexpected input type in DoesReadOnlyApply()"); return true; #else // DEBUG default: return true; #endif // DEBUG } } void nsGenericHTMLFormControlElement::SetFormInternal(HTMLFormElement* aForm, bool aBindToTree) { if (aForm) { BeforeSetForm(aForm, aBindToTree); } // keep a *weak* ref to the form here mForm = aForm; } HTMLFormElement* nsGenericHTMLFormControlElement::GetFormInternal() const { return mForm; } HTMLFieldSetElement* nsGenericHTMLFormControlElement::GetFieldSetInternal() const { return mFieldSet; } void nsGenericHTMLFormControlElement::SetFieldSetInternal( HTMLFieldSetElement* aFieldset) { mFieldSet = aFieldset; } void nsGenericHTMLFormControlElement::UpdateRequiredState(bool aIsRequired, bool aNotify) { #ifdef DEBUG auto type = ControlType(); #endif MOZ_ASSERT(IsInputElement(type) || type == FormControlType::Select || type == FormControlType::Textarea, "This should be called only on types that @required applies"); #ifdef DEBUG if (HTMLInputElement* input = HTMLInputElement::FromNode(this)) { MOZ_ASSERT( input->DoesRequiredApply(), "This should be called only on input types that @required applies"); } #endif ElementState requiredStates; if (aIsRequired) { requiredStates |= ElementState::REQUIRED; } else { requiredStates |= ElementState::OPTIONAL_; } ElementState oldRequiredStates = State() & ElementState::REQUIRED_STATES; ElementState changedStates = requiredStates ^ oldRequiredStates; if (!changedStates.IsEmpty()) { ToggleStates(changedStates, aNotify); } } bool nsGenericHTMLFormControlElement::IsAutocapitalizeInheriting() const { auto type = ControlType(); return IsInputElement(type) || IsButtonElement(type) || type == FormControlType::Fieldset || type == FormControlType::Output || type == FormControlType::Select || type == FormControlType::Textarea; } nsresult nsGenericHTMLFormControlElement::SubmitDirnameDir( FormData* aFormData) { // Submit dirname=dir if element has non-empty dirname attribute if (HasAttr(nsGkAtoms::dirname)) { nsAutoString dirname; GetAttr(nsGkAtoms::dirname, dirname); if (!dirname.IsEmpty()) { const Directionality dir = GetDirectionality(); MOZ_ASSERT(dir == Directionality::Ltr || dir == Directionality::Rtl, "The directionality of an element is either ltr or rtl"); return aFormData->AddNameValuePair( dirname, dir == Directionality::Ltr ? u"ltr"_ns : u"rtl"_ns); } } return NS_OK; } //---------------------------------------------------------------------- static const nsAttrValue::EnumTable kPopoverTargetActionTable[] = { {"toggle", PopoverTargetAction::Toggle}, {"show", PopoverTargetAction::Show}, {"hide", PopoverTargetAction::Hide}, {nullptr, 0}}; static const nsAttrValue::EnumTable* kPopoverTargetActionDefault = &kPopoverTargetActionTable[0]; nsGenericHTMLFormControlElementWithState:: nsGenericHTMLFormControlElementWithState( already_AddRefed&& aNodeInfo, FromParser aFromParser, FormControlType aType) : nsGenericHTMLFormControlElement(std::move(aNodeInfo), aType), mControlNumber(!!(aFromParser & FROM_PARSER_NETWORK) ? OwnerDoc()->GetNextControlNumber() : -1) { mStateKey.SetIsVoid(true); } bool nsGenericHTMLFormControlElementWithState::ParseAttribute( int32_t aNamespaceID, nsAtom* aAttribute, const nsAString& aValue, nsIPrincipal* aMaybeScriptedPrincipal, nsAttrValue& aResult) { if (aNamespaceID == kNameSpaceID_None) { if (StaticPrefs::dom_element_popover_enabled()) { if (aAttribute == nsGkAtoms::popovertargetaction) { return aResult.ParseEnumValue(aValue, kPopoverTargetActionTable, false, kPopoverTargetActionDefault); } if (aAttribute == nsGkAtoms::popovertarget) { aResult.ParseAtom(aValue); return true; } } if (StaticPrefs::dom_element_invokers_enabled()) { if (aAttribute == nsGkAtoms::invokeaction) { aResult.ParseAtom(aValue); return true; } if (aAttribute == nsGkAtoms::invoketarget) { aResult.ParseAtom(aValue); return true; } } } return nsGenericHTMLFormControlElement::ParseAttribute( aNamespaceID, aAttribute, aValue, aMaybeScriptedPrincipal, aResult); } mozilla::dom::Element* nsGenericHTMLFormControlElementWithState::GetPopoverTargetElement() const { return GetAttrAssociatedElement(nsGkAtoms::popovertarget); } void nsGenericHTMLFormControlElementWithState::SetPopoverTargetElement( mozilla::dom::Element* aElement) { ExplicitlySetAttrElement(nsGkAtoms::popovertarget, aElement); } void nsGenericHTMLFormControlElementWithState::HandlePopoverTargetAction() { RefPtr target = GetEffectivePopoverTargetElement(); if (!target) { return; } auto action = PopoverTargetAction::Toggle; if (const nsAttrValue* value = GetParsedAttr(nsGkAtoms::popovertargetaction)) { MOZ_ASSERT(value->Type() == nsAttrValue::eEnum); action = static_cast(value->GetEnumValue()); } bool canHide = action == PopoverTargetAction::Hide || action == PopoverTargetAction::Toggle; bool shouldHide = canHide && target->IsPopoverOpen(); bool canShow = action == PopoverTargetAction::Show || action == PopoverTargetAction::Toggle; bool shouldShow = canShow && !target->IsPopoverOpen(); if (shouldHide) { target->HidePopover(IgnoreErrors()); } else if (shouldShow) { target->ShowPopoverInternal(this, IgnoreErrors()); } } void nsGenericHTMLFormControlElementWithState::GetInvokeAction( nsAString& aValue) const { GetInvokeAction()->ToString(aValue); } nsAtom* nsGenericHTMLFormControlElementWithState::GetInvokeAction() const { const nsAttrValue* attr = GetParsedAttr(nsGkAtoms::invokeaction); if (attr && attr->GetAtomValue() != nsGkAtoms::_empty) { return attr->GetAtomValue(); } return nsGkAtoms::_auto; } mozilla::dom::Element* nsGenericHTMLFormControlElementWithState::GetInvokeTargetElement() const { if (StaticPrefs::dom_element_invokers_enabled()) { return GetAttrAssociatedElement(nsGkAtoms::invoketarget); } return nullptr; } void nsGenericHTMLFormControlElementWithState::SetInvokeTargetElement( mozilla::dom::Element* aElement) { ExplicitlySetAttrElement(nsGkAtoms::invoketarget, aElement); } void nsGenericHTMLFormControlElementWithState::HandleInvokeTargetAction() { // 1. Let invokee be node's invoke target element. RefPtr invokee = GetInvokeTargetElement(); // 2. If invokee is null, then return. if (!invokee) { return; } // 3. Let action be node's invokeaction attribute // 4. If action is null or empty, then let action be the string "auto". RefPtr aAction = GetInvokeAction(); MOZ_ASSERT(!aAction->IsEmpty(), "Action should not be empty"); // 5. Let notCancelled be the result of firing an event named invoke at // invokee with its action set to action, its invoker set to node, // and its cancelable attribute initialized to true. InvokeEventInit init; aAction->ToString(init.mAction); init.mInvoker = this; init.mCancelable = true; init.mComposed = true; RefPtr event = InvokeEvent::Constructor(this, u"invoke"_ns, init); event->SetTrusted(true); event->SetTarget(invokee); EventDispatcher::DispatchDOMEvent(invokee, nullptr, event, nullptr, nullptr); // 6. If notCancelled is true and invokee has an associated invocation action // algorithm then run the invokee's invocation action algorithm given action. if (event->DefaultPrevented()) { return; } invokee->HandleInvokeInternal(aAction, IgnoreErrors()); } void nsGenericHTMLFormControlElementWithState::GenerateStateKey() { // Keep the key if already computed if (!mStateKey.IsVoid()) { return; } Document* doc = GetUncomposedDoc(); if (!doc) { mStateKey.Truncate(); return; } // Generate the state key nsContentUtils::GenerateStateKey(this, doc, mStateKey); // If the state key is blank, this is anonymous content or for whatever // reason we are not supposed to save/restore state: keep it as such. if (!mStateKey.IsEmpty()) { // Add something unique to content so layout doesn't muck us up. mStateKey += "-C"; } } PresState* nsGenericHTMLFormControlElementWithState::GetPrimaryPresState() { if (mStateKey.IsEmpty()) { return nullptr; } nsCOMPtr history = GetLayoutHistory(false); if (!history) { return nullptr; } // Get the pres state for this key, if it doesn't exist, create one. PresState* result = history->GetState(mStateKey); if (!result) { UniquePtr newState = NewPresState(); result = newState.get(); history->AddState(mStateKey, std::move(newState)); } return result; } already_AddRefed nsGenericHTMLFormElement::GetLayoutHistory(bool aRead) { nsCOMPtr doc = GetUncomposedDoc(); if (!doc) { return nullptr; } // // Get the history // nsCOMPtr history = doc->GetLayoutHistoryState(); if (!history) { return nullptr; } if (aRead && !history->HasStates()) { return nullptr; } return history.forget(); } bool nsGenericHTMLFormControlElementWithState::RestoreFormControlState() { MOZ_ASSERT(!mStateKey.IsVoid(), "GenerateStateKey must already have been called"); if (mStateKey.IsEmpty()) { return false; } nsCOMPtr history = GetLayoutHistory(true); if (!history) { return false; } // Get the pres state for this key PresState* state = history->GetState(mStateKey); if (state) { bool result = RestoreState(state); history->RemoveState(mStateKey); return result; } return false; } void nsGenericHTMLFormControlElementWithState::NodeInfoChanged( Document* aOldDoc) { nsGenericHTMLFormControlElement::NodeInfoChanged(aOldDoc); // We need to regenerate the state key now we're in a new document. Clearing // mControlNumber means we stop considering this control to be parser // inserted, and we'll generate a state key based on its position in the // document rather than the order it was inserted into the document. mControlNumber = -1; mStateKey.SetIsVoid(true); } void nsGenericHTMLFormControlElementWithState::GetFormAction(nsString& aValue) { auto type = ControlType(); if (!IsInputElement(type) && !IsButtonElement(type)) { return; } if (!GetAttr(nsGkAtoms::formaction, aValue) || aValue.IsEmpty()) { Document* 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::formaction, nullptr, aValue); } } bool nsGenericHTMLElement::IsEventAttributeNameInternal(nsAtom* aName) { return nsContentUtils::IsEventAttributeName(aName, EventNameType_HTML); } /** * Construct a URI from a string, as an element.src attribute * would be set to. Helper for the media elements. */ nsresult nsGenericHTMLElement::NewURIFromString(const nsAString& aURISpec, nsIURI** aURI) { NS_ENSURE_ARG_POINTER(aURI); *aURI = nullptr; nsCOMPtr doc = OwnerDoc(); nsresult rv = nsContentUtils::NewURIWithDocumentCharset(aURI, aURISpec, doc, GetBaseURI()); NS_ENSURE_SUCCESS(rv, rv); bool equal; if (aURISpec.IsEmpty() && doc->GetDocumentURI() && NS_SUCCEEDED(doc->GetDocumentURI()->Equals(*aURI, &equal)) && equal) { // Assume an element can't point to a fragment of its embedding // document. Fail here instead of returning the recursive URI // and waiting for the subsequent load to fail. NS_RELEASE(*aURI); return NS_ERROR_DOM_INVALID_STATE_ERR; } return NS_OK; } void nsGenericHTMLElement::GetInnerText(mozilla::dom::DOMString& aValue, mozilla::ErrorResult& aError) { // innerText depends on layout. For example, white space processing is // something that happens during reflow and which must be reflected by // innerText. So for: // //
A B C
// // innerText should give "A B C". // // The approach taken here to avoid the expense of reflow is to flush style // and then see whether it's necessary to flush layout afterwards. Flushing // layout can be skipped if we can detect that the element or its descendants // are not dirty. // Obtain the composed doc to handle elements in Shadow DOM. Document* doc = GetComposedDoc(); if (doc) { doc->FlushPendingNotifications(FlushType::Style); } // Elements with `display: content` will not have a frame. To handle Shadow // DOM, walk the flattened tree looking for parent frame. nsIFrame* frame = GetPrimaryFrame(); if (IsDisplayContents()) { for (Element* parent = GetFlattenedTreeParentElement(); parent; parent = parent->GetFlattenedTreeParentElement()) { frame = parent->GetPrimaryFrame(); if (frame) { break; } } } // Check for dirty reflow roots in the subtree from targetFrame; this requires // a reflow flush. bool dirty = frame && frame->PresShell()->FrameIsAncestorOfDirtyRoot(frame); // The way we do that is by checking whether the element has either of the two // dirty bits (NS_FRAME_IS_DIRTY or NS_FRAME_HAS_DIRTY_DESCENDANTS) or if any // ancestor has NS_FRAME_IS_DIRTY. We need to check for NS_FRAME_IS_DIRTY on // ancestors since that is something that implies NS_FRAME_IS_DIRTY on all // descendants. dirty |= frame && frame->HasAnyStateBits(NS_FRAME_HAS_DIRTY_CHILDREN); while (!dirty && frame) { dirty |= frame->HasAnyStateBits(NS_FRAME_IS_DIRTY); frame = frame->GetInFlowParent(); } // Flush layout if we determined a reflow is required. if (dirty && doc) { doc->FlushPendingNotifications(FlushType::Layout); } if (!IsRendered()) { GetTextContentInternal(aValue, aError); } else { nsRange::GetInnerTextNoFlush(aValue, aError, this); } } static already_AddRefed TextToNode(const nsAString& aString, nsNodeInfoManager* aNim) { nsString str; const char16_t* s = aString.BeginReading(); const char16_t* end = aString.EndReading(); RefPtr fragment; while (true) { if (s != end && *s == '\r' && s + 1 != end && s[1] == '\n') { // a \r\n pair should only generate one
, so just skip the \r ++s; } if (s == end || *s == '\r' || *s == '\n') { if (!str.IsEmpty()) { RefPtr textContent = new (aNim) nsTextNode(aNim); textContent->SetText(str, true); if (!fragment) { if (s == end) { return textContent.forget(); } fragment = new (aNim) DocumentFragment(aNim); } fragment->AppendChildTo(textContent, true, IgnoreErrors()); } if (s == end) { break; } str.Truncate(); RefPtr ni = aNim->GetNodeInfo( nsGkAtoms::br, nullptr, kNameSpaceID_XHTML, nsINode::ELEMENT_NODE); auto* nim = ni->NodeInfoManager(); RefPtr br = new (nim) HTMLBRElement(ni.forget()); if (!fragment) { if (s + 1 == end) { return br.forget(); } fragment = new (aNim) DocumentFragment(aNim); } fragment->AppendChildTo(br, true, IgnoreErrors()); } else { str.Append(*s); } ++s; } return fragment.forget(); } void nsGenericHTMLElement::SetInnerText(const nsAString& aValue) { RefPtr node = TextToNode(aValue, NodeInfo()->NodeInfoManager()); ReplaceChildren(node, IgnoreErrors()); } // https://html.spec.whatwg.org/#merge-with-the-next-text-node static void MergeWithNextTextNode(Text& aText, ErrorResult& aRv) { RefPtr nextSibling = Text::FromNodeOrNull(aText.GetNextSibling()); if (!nextSibling) { return; } nsAutoString data; nextSibling->GetData(data); aText.AppendData(data, aRv); nextSibling->Remove(); } // https://html.spec.whatwg.org/#dom-outertext void nsGenericHTMLElement::SetOuterText(const nsAString& aValue, ErrorResult& aRv) { nsCOMPtr parent = GetParentNode(); if (!parent) { return aRv.ThrowNoModificationAllowedError("Element has no parent"); } RefPtr next = GetNextSibling(); RefPtr previous = GetPreviousSibling(); // Batch possible DOMSubtreeModified events. mozAutoSubtreeModified subtree(OwnerDoc(), nullptr); nsNodeInfoManager* nim = NodeInfo()->NodeInfoManager(); RefPtr node = TextToNode(aValue, nim); if (!node) { // This doesn't match the spec, see // https://github.com/whatwg/html/issues/7508 node = new (nim) nsTextNode(nim); } parent->ReplaceChild(*node, *this, aRv); if (aRv.Failed()) { return; } if (next) { if (RefPtr text = Text::FromNodeOrNull(next->GetPreviousSibling())) { MergeWithNextTextNode(*text, aRv); if (aRv.Failed()) { return; } } } if (auto* text = Text::FromNodeOrNull(previous)) { MergeWithNextTextNode(*text, aRv); } } // This should be true when `:open` should match. bool nsGenericHTMLElement::PopoverOpen() const { if (PopoverData* popoverData = GetPopoverData()) { return popoverData->GetPopoverVisibilityState() == PopoverVisibilityState::Showing; } return false; } // https://html.spec.whatwg.org/#check-popover-validity bool nsGenericHTMLElement::CheckPopoverValidity( PopoverVisibilityState aExpectedState, Document* aExpectedDocument, ErrorResult& aRv) { if (GetPopoverAttributeState() == PopoverAttributeState::None) { aRv.ThrowNotSupportedError("Element is in the no popover state"); return false; } if (GetPopoverData()->GetPopoverVisibilityState() != aExpectedState) { return false; } if (!IsInComposedDoc()) { aRv.ThrowInvalidStateError("Element is not connected"); return false; } if (aExpectedDocument && aExpectedDocument != OwnerDoc()) { aRv.ThrowInvalidStateError("Element is moved to other document"); return false; } if (auto* dialog = HTMLDialogElement::FromNode(this)) { if (dialog->IsInTopLayer()) { aRv.ThrowInvalidStateError("Element is a modal element"); return false; } } if (State().HasState(ElementState::FULLSCREEN)) { aRv.ThrowInvalidStateError("Element is fullscreen"); return false; } return true; } PopoverAttributeState nsGenericHTMLElement::GetPopoverAttributeState() const { return GetPopoverData() ? GetPopoverData()->GetPopoverAttributeState() : PopoverAttributeState::None; } void nsGenericHTMLElement::PopoverPseudoStateUpdate(bool aOpen, bool aNotify) { SetStates(ElementState::POPOVER_OPEN, aOpen, aNotify); } already_AddRefed nsGenericHTMLElement::CreateToggleEvent( const nsAString& aEventType, const nsAString& aOldState, const nsAString& aNewState, Cancelable aCancelable) { ToggleEventInit init; init.mBubbles = false; init.mOldState = aOldState; init.mNewState = aNewState; init.mCancelable = aCancelable == Cancelable::eYes; RefPtr event = ToggleEvent::Constructor(this, aEventType, init); event->SetTrusted(true); event->SetTarget(this); return event.forget(); } bool nsGenericHTMLElement::FireToggleEvent(PopoverVisibilityState aOldState, PopoverVisibilityState aNewState, const nsAString& aType) { auto stringForState = [](PopoverVisibilityState state) { return state == PopoverVisibilityState::Hidden ? u"closed"_ns : u"open"_ns; }; const auto cancelable = aType == u"beforetoggle"_ns && aNewState == PopoverVisibilityState::Showing ? Cancelable::eYes : Cancelable::eNo; RefPtr event = CreateToggleEvent(aType, stringForState(aOldState), stringForState(aNewState), cancelable); EventDispatcher::DispatchDOMEvent(this, nullptr, event, nullptr, nullptr); return event->DefaultPrevented(); } // https://html.spec.whatwg.org/#queue-a-popover-toggle-event-task void nsGenericHTMLElement::QueuePopoverEventTask( PopoverVisibilityState aOldState) { auto* data = GetPopoverData(); MOZ_ASSERT(data, "Should have popover data"); if (auto* queuedToggleEventTask = data->GetToggleEventTask()) { aOldState = queuedToggleEventTask->GetOldState(); } auto task = MakeRefPtr(do_GetWeakReference(this), aOldState); data->SetToggleEventTask(task); OwnerDoc()->Dispatch(task.forget()); } void nsGenericHTMLElement::RunPopoverToggleEventTask( PopoverToggleEventTask* aTask, PopoverVisibilityState aOldState) { auto* data = GetPopoverData(); if (!data) { return; } auto* popoverToggleEventTask = data->GetToggleEventTask(); if (!popoverToggleEventTask || aTask != popoverToggleEventTask) { return; } data->ClearToggleEventTask(); // Intentionally ignore the return value here as only on open event the // cancelable attribute is initialized to true for beforetoggle event. FireToggleEvent(aOldState, data->GetPopoverVisibilityState(), u"toggle"_ns); } // https://html.spec.whatwg.org/#dom-showpopover void nsGenericHTMLElement::ShowPopover(ErrorResult& aRv) { return ShowPopoverInternal(nullptr, aRv); } void nsGenericHTMLElement::ShowPopoverInternal(Element* aInvoker, ErrorResult& aRv) { if (!CheckPopoverValidity(PopoverVisibilityState::Hidden, nullptr, aRv)) { return; } RefPtr document = OwnerDoc(); MOZ_ASSERT(!GetPopoverData() || !GetPopoverData()->GetInvoker()); MOZ_ASSERT(!OwnerDoc()->TopLayerContains(*this)); bool wasShowingOrHiding = GetPopoverData()->IsShowingOrHiding(); GetPopoverData()->SetIsShowingOrHiding(true); auto cleanupShowingFlag = MakeScopeExit([&]() { if (auto* popoverData = GetPopoverData()) { popoverData->SetIsShowingOrHiding(wasShowingOrHiding); } }); // Fire beforetoggle event and re-check popover validity. if (FireToggleEvent(PopoverVisibilityState::Hidden, PopoverVisibilityState::Showing, u"beforetoggle"_ns)) { return; } if (!CheckPopoverValidity(PopoverVisibilityState::Hidden, document, aRv)) { return; } bool shouldRestoreFocus = false; nsWeakPtr originallyFocusedElement; if (IsAutoPopover()) { auto originalState = GetPopoverAttributeState(); RefPtr ancestor = GetTopmostPopoverAncestor(aInvoker, true); if (!ancestor) { ancestor = document; } document->HideAllPopoversUntil(*ancestor, false, /* aFireEvents = */ !wasShowingOrHiding); if (GetPopoverAttributeState() != originalState) { aRv.ThrowInvalidStateError( "The value of the popover attribute was changed while hiding the " "popover."); return; } // TODO: Handle if document changes, see // https://github.com/whatwg/html/issues/9177 if (!IsAutoPopover() || !CheckPopoverValidity(PopoverVisibilityState::Hidden, document, aRv)) { return; } shouldRestoreFocus = !document->GetTopmostAutoPopover(); // Let originallyFocusedElement be document's focused area of the document's // DOM anchor. if (nsIContent* unretargetedFocus = document->GetUnretargetedFocusedContent()) { originallyFocusedElement = do_GetWeakReference(unretargetedFocus->AsElement()); } } document->AddPopoverToTopLayer(*this); PopoverPseudoStateUpdate(true, true); { auto* popoverData = GetPopoverData(); popoverData->SetPopoverVisibilityState(PopoverVisibilityState::Showing); popoverData->SetInvoker(aInvoker); } // Run the popover focusing steps given element. FocusPopover(); if (shouldRestoreFocus && GetPopoverAttributeState() != PopoverAttributeState::None) { GetPopoverData()->SetPreviouslyFocusedElement(originallyFocusedElement); } // Queue popover toggle event task. QueuePopoverEventTask(PopoverVisibilityState::Hidden); } void nsGenericHTMLElement::HidePopoverWithoutRunningScript() { HidePopoverInternal(/* aFocusPreviousElement = */ false, /* aFireEvents = */ false, IgnoreErrors()); } // https://html.spec.whatwg.org/#dom-hidepopover void nsGenericHTMLElement::HidePopover(ErrorResult& aRv) { HidePopoverInternal(/* aFocusPreviousElement = */ true, /* aFireEvents = */ true, aRv); } void nsGenericHTMLElement::HidePopoverInternal(bool aFocusPreviousElement, bool aFireEvents, ErrorResult& aRv) { OwnerDoc()->HidePopover(*this, aFocusPreviousElement, aFireEvents, aRv); } void nsGenericHTMLElement::ForgetPreviouslyFocusedElementAfterHidingPopover() { auto* data = GetPopoverData(); MOZ_ASSERT(data, "Should have popover data"); data->SetPreviouslyFocusedElement(nullptr); } void nsGenericHTMLElement::FocusPreviousElementAfterHidingPopover() { auto* data = GetPopoverData(); MOZ_ASSERT(data, "Should have popover data"); RefPtr control = do_QueryReferent(data->GetPreviouslyFocusedElement().get()); data->SetPreviouslyFocusedElement(nullptr); if (!control) { return; } // Step 14.2 at // https://html.spec.whatwg.org/multipage/popover.html#hide-popover-algorithm // If focusPreviousElement is true and document's focused area of the // document's DOM anchor is a shadow-including inclusive descendant of // element, then run the focusing steps for previouslyFocusedElement; nsIContent* currentFocus = OwnerDoc()->GetUnretargetedFocusedContent(); if (currentFocus && currentFocus->IsShadowIncludingInclusiveDescendantOf(this)) { FocusOptions options; options.mPreventScroll = true; control->Focus(options, CallerType::NonSystem, IgnoreErrors()); } } // https://html.spec.whatwg.org/multipage/popover.html#dom-togglepopover bool nsGenericHTMLElement::TogglePopover(const Optional& aForce, ErrorResult& aRv) { if (PopoverOpen() && (!aForce.WasPassed() || !aForce.Value())) { HidePopover(aRv); } else if (!aForce.WasPassed() || aForce.Value()) { ShowPopover(aRv); } else { CheckPopoverValidity(GetPopoverData() ? GetPopoverData()->GetPopoverVisibilityState() : PopoverVisibilityState::Showing, nullptr, aRv); } return PopoverOpen(); } // https://html.spec.whatwg.org/multipage/popover.html#popover-focusing-steps void nsGenericHTMLElement::FocusPopover() { if (auto* dialog = HTMLDialogElement::FromNode(this)) { return MOZ_KnownLive(dialog)->FocusDialog(); } if (RefPtr doc = GetComposedDoc()) { doc->FlushPendingNotifications(FlushType::Frames); } RefPtr control = GetBoolAttr(nsGkAtoms::autofocus) ? this : GetAutofocusDelegate(false /* aWithMouse */); if (!control) { return; } FocusCandidate(control, false /* aClearUpFocus */); } void nsGenericHTMLElement::FocusCandidate(Element* aControl, bool aClearUpFocus) { // 1) Run the focusing steps given control. IgnoredErrorResult rv; if (RefPtr elementToFocus = nsFocusManager::GetTheFocusableArea( aControl, nsFocusManager::ProgrammaticFocusFlags(FocusOptions()))) { elementToFocus->Focus(FocusOptions(), CallerType::NonSystem, rv); if (rv.Failed()) { return; } } else if (aClearUpFocus) { if (RefPtr fm = nsFocusManager::GetFocusManager()) { // Clear the focus which ends up making the body gets focused nsCOMPtr outerWindow = OwnerDoc()->GetWindow(); fm->ClearFocus(outerWindow); } } // 2) Let topDocument be the active document of control's node document's // browsing context's top-level browsing context. // 3) If control's node document's origin is not the same as the origin of // topDocument, then return. BrowsingContext* bc = aControl->OwnerDoc()->GetBrowsingContext(); if (bc && bc->IsInProcess() && bc->SameOriginWithTop()) { if (nsCOMPtr docShell = bc->Top()->GetDocShell()) { if (Document* topDocument = docShell->GetExtantDocument()) { // 4) Empty topDocument's autofocus candidates. // 5) Set topDocument's autofocus processed flag to true. topDocument->SetAutoFocusFired(); } } } } already_AddRefed nsGenericHTMLElement::AttachInternals( ErrorResult& aRv) { // ElementInternals is only available on autonomous custom element, so throws // an error by default. The spec steps are implemented in HTMLElement because // ElementInternals needs to hold a pointer to HTMLElement in order to forward // form operation to it. aRv.ThrowNotSupportedError(nsPrintfCString( "Cannot attach ElementInternals to a customized built-in or non-custom " "element " "'%s'", NS_ConvertUTF16toUTF8(NodeInfo()->NameAtom()->GetUTF16String()).get())); return nullptr; } ElementInternals* nsGenericHTMLElement::GetInternals() const { if (CustomElementData* data = GetCustomElementData()) { return data->GetElementInternals(); } return nullptr; } bool nsGenericHTMLElement::IsFormAssociatedCustomElements() const { if (CustomElementData* data = GetCustomElementData()) { return data->IsFormAssociated(); } return false; } void nsGenericHTMLElement::GetAutocapitalize(nsAString& aValue) const { GetEnumAttr(nsGkAtoms::autocapitalize, nullptr, kDefaultAutocapitalize->tag, aValue); } bool nsGenericHTMLElement::Translate() const { if (const nsAttrValue* attr = mAttrs.GetAttr(nsGkAtoms::translate)) { if (attr->IsEmptyString() || attr->Equals(nsGkAtoms::yes, eIgnoreCase)) { return true; } if (attr->Equals(nsGkAtoms::no, eIgnoreCase)) { return false; } } return nsGenericHTMLElementBase::Translate(); } void nsGenericHTMLElement::GetPopover(nsString& aPopover) const { GetHTMLEnumAttr(nsGkAtoms::popover, aPopover); if (aPopover.IsEmpty() && !DOMStringIsNull(aPopover)) { aPopover.Assign(NS_ConvertUTF8toUTF16(kPopoverAttributeValueAuto)); } }