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fune/dom/html/nsGenericHTMLElement.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/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_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 "mozilla/dom/UnbindContext.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<nsString*>(GetProperty(nsGkAtoms::nonce));
if (nonce) {
static_cast<nsGenericHTMLElement*>(aDst)->SetNonce(*nonce);
}
return NS_OK;
}
static const nsAttrValue::EnumTable kDirTable[] = {
{"ltr", Directionality::Ltr},
{"rtl", Directionality::Rtl},
{"auto", Directionality::Auto},
{nullptr, 0},
};
namespace {
// See <https://html.spec.whatwg.org/#the-popover-attribute>.
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 <https://html.spec.whatwg.org/#the-popover-attribute>.
static const nsAttrValue::EnumTable* kPopoverTableInvalidValueDefault =
&kPopoverTable[2];
} // namespace
void nsGenericHTMLElement::GetFetchPriority(nsAString& aFetchPriority) const {
// <https://html.spec.whatwg.org/multipage/urls-and-fetching.html#fetch-priority-attributes>.
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 {
// <https://html.spec.whatwg.org/multipage/urls-and-fetching.html#fetch-priority-attributes>.
static const nsAttrValue::EnumTable kFetchPriorityEnumTable[] = {
{kFetchPriorityAttributeValueHigh, FetchPriority::High},
{kFetchPriorityAttributeValueLow, FetchPriority::Low},
{kFetchPriorityAttributeValueAuto, FetchPriority::Auto},
{nullptr, 0}};
// <https://html.spec.whatwg.org/multipage/urls-and-fetching.html#fetch-priority-attributes>.
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<nsIFormControl> 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<nsGenericHTMLElement>(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(UnbindContext& aContext) {
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(aContext);
// 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<HTMLFormElement*>(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<Link>(do_QueryObject(this)),
"should be called only when |this| implements |Link|");
// When disconnected, only <a> 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<nsIURI> 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<nsIURI> 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 <https://html.spec.whatwg.org/#the-popover-attribute>.
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<PopoverAttributeKeyword>(value->GetEnumValue());
return ToPopoverAttributeState(popoverAttributeKeyword);
}
// The missing value default is the no popover state, see
// <https://html.spec.whatwg.org/multipage/popover.html#attr-popover>.
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::OnAttrSetButNotChanged(
int32_t aNamespaceID, nsAtom* aName, const nsAttrValueOrString& aValue,
bool aNotify) {
if (aNamespaceID == kNameSpaceID_None && aName == nsGkAtoms::popovertarget) {
ClearExplicitlySetAttrElement(aName);
}
return nsGenericHTMLElementBase::OnAttrSetButNotChanged(aNamespaceID, aName,
aValue, aNotify);
}
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(aName);
} 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> editorBase = GetEditorWithoutCreation()) {
IMEState newState;
editorBase->GetPreferredIMEState(&newState);
OwningNonNull<nsGenericHTMLElement> 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<EventTarget> 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<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); \
OnErrorEventHandlerNonNull* errorHandler = globalWin->GetOn##name_(); \
if (errorHandler) { \
RefPtr<EventHandlerNonNull> handler = \
new EventHandlerNonNull(errorHandler); \
return handler.forget(); \
} \
} \
return nullptr; \
} \
\
RefPtr<EventHandlerNonNull> 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<OnErrorEventHandlerNonNull> 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<nsIURI> 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;
// This is a bit sketchy, we assume GetEnumString(…).get() points to a static
// buffer, relying on the fact that GetEnumString(…) returns a literal string.
static const nsAttrValue::EnumTable kReferrerPolicyTable[] = {
{GetEnumString(ReferrerPolicy::No_referrer).get(),
static_cast<int16_t>(ReferrerPolicy::No_referrer)},
{GetEnumString(ReferrerPolicy::Origin).get(),
static_cast<int16_t>(ReferrerPolicy::Origin)},
{GetEnumString(ReferrerPolicy::Origin_when_cross_origin).get(),
static_cast<int16_t>(ReferrerPolicy::Origin_when_cross_origin)},
{GetEnumString(ReferrerPolicy::No_referrer_when_downgrade).get(),
static_cast<int16_t>(ReferrerPolicy::No_referrer_when_downgrade)},
{GetEnumString(ReferrerPolicy::Unsafe_url).get(),
static_cast<int16_t>(ReferrerPolicy::Unsafe_url)},
{GetEnumString(ReferrerPolicy::Strict_origin).get(),
static_cast<int16_t>(ReferrerPolicy::Strict_origin)},
{GetEnumString(ReferrerPolicy::Same_origin).get(),
static_cast<int16_t>(ReferrerPolicy::Same_origin)},
{GetEnumString(ReferrerPolicy::Strict_origin_when_cross_origin).get(),
static_cast<int16_t>(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<double> w;
if (aWidth.Type() == nsAttrValue::eInteger) {
w.emplace(aWidth.GetIntegerValue());
} else if (aWidth.Type() == nsAttrValue::eDoubleValue) {
w.emplace(aWidth.GetDoubleValue());
}
Maybe<double> 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<nsIURI> 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<nsIURI> baseURI = GetBaseURI();
if (aBaseAttr) {
nsAutoString baseAttrValue;
if (GetAttr(aBaseAttr, baseAttrValue)) {
nsCOMPtr<nsIURI> 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<nsINodeList> 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<nsLabelsNodeList> 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<mozilla::dom::NodeInfo>&& 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(UnbindContext& aContext) {
// Save state before doing anything else.
SaveState();
if (IsFormAssociatedElement()) {
if (HTMLFormElement* form = GetFormInternal()) {
// Might need to unset form
if (aContext.IsUnbindRoot(this)) {
// 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(aContext);
// 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<nsAtom> 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<nsAtom> atom = NS_Atomize(formId);
docOrShadow->RemoveIDTargetObserver(atom, FormIdUpdated, this, false);
}
/* static */
bool nsGenericHTMLFormElement::FormIdUpdated(Element* aOldElement,
Element* aNewElement,
void* aData) {
nsGenericHTMLFormElement* element =
static_cast<nsGenericHTMLFormElement*>(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<HTMLFormElement*>(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. <fieldset> is
// included only in the latter, so we exclude it here.
// XXX(krosylight): What about <optgroup>? 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<Document> doc = GetComposedDoc();
RefPtr<nsPresContext> 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<int32_t> 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<bool, nsresult> nsGenericHTMLElement::PerformAccesskey(
bool aKeyCausesActivation, bool aIsTrustedEvent) {
RefPtr<nsPresContext> 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<nsFocusManager> 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<bool, nsresult>{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<nsPresContext> 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<EditorBase> nsGenericHTMLElement::GetAssociatedEditor() {
// If contenteditable is ever implemented, it might need to do something
// different here?
RefPtr<TextEditor> textEditor = GetTextEditorInternal();
return textEditor.forget();
}
// static
void nsGenericHTMLElement::SyncEditorsOnSubtree(nsIContent* content) {
/* Sync this node */
nsGenericHTMLElement* element = FromNode(content);
if (element) {
if (RefPtr<EditorBase> 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<mozilla::dom::NodeInfo>&& 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<nsINode*>(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<mozilla::dom::NodeInfo>&& 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<nsGenericHTMLElement> 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<PopoverTargetAction>(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<Element> 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<nsAtom> 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> 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<nsILayoutHistoryState> 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<PresState> newState = NewPresState();
result = newState.get();
history->AddState(mStateKey, std::move(newState));
}
return result;
}
already_AddRefed<nsILayoutHistoryState>
nsGenericHTMLFormElement::GetLayoutHistory(bool aRead) {
nsCOMPtr<Document> doc = GetUncomposedDoc();
if (!doc) {
return nullptr;
}
//
// Get the history
//
nsCOMPtr<nsILayoutHistoryState> 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<nsILayoutHistoryState> 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<Document> 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:
//
// <div style="white-space:normal"> A B C </div>
//
// 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<nsINode> TextToNode(const nsAString& aString,
nsNodeInfoManager* aNim) {
nsString str;
const char16_t* s = aString.BeginReading();
const char16_t* end = aString.EndReading();
RefPtr<DocumentFragment> fragment;
while (true) {
if (s != end && *s == '\r' && s + 1 != end && s[1] == '\n') {
// a \r\n pair should only generate one <br>, so just skip the \r
++s;
}
if (s == end || *s == '\r' || *s == '\n') {
if (!str.IsEmpty()) {
RefPtr<nsTextNode> 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<NodeInfo> ni = aNim->GetNodeInfo(
nsGkAtoms::br, nullptr, kNameSpaceID_XHTML, nsINode::ELEMENT_NODE);
auto* nim = ni->NodeInfoManager();
RefPtr<HTMLBRElement> 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<nsINode> 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<Text> 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<nsINode> parent = GetParentNode();
if (!parent) {
return aRv.ThrowNoModificationAllowedError("Element has no parent");
}
RefPtr<nsINode> next = GetNextSibling();
RefPtr<nsINode> previous = GetPreviousSibling();
// Batch possible DOMSubtreeModified events.
mozAutoSubtreeModified subtree(OwnerDoc(), nullptr);
nsNodeInfoManager* nim = NodeInfo()->NodeInfoManager();
RefPtr<nsINode> 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 = 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 <dialog> 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<ToggleEvent> 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<ToggleEvent> 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<PopoverToggleEventTask>(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> 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<nsINode> 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<Element> 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<bool>& 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<Document> doc = GetComposedDoc()) {
doc->FlushPendingNotifications(FlushType::Frames);
}
RefPtr<Element> 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<Element> elementToFocus = nsFocusManager::GetTheFocusableArea(
aControl, nsFocusManager::ProgrammaticFocusFlags(FocusOptions()))) {
elementToFocus->Focus(FocusOptions(), CallerType::NonSystem, rv);
if (rv.Failed()) {
return;
}
} else if (aClearUpFocus) {
if (RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager()) {
// Clear the focus which ends up making the body gets focused
nsCOMPtr<nsPIDOMWindowOuter> 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<nsIDocShell> 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<ElementInternals> 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));
}
}
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