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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/ArrayUtils.h"
#include "mozilla/DeclarationBlock.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/EventStates.h"
#include "mozilla/HTMLEditor.h"
#include "mozilla/MappedDeclarations.h"
#include "mozilla/Likely.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/PresShell.h"
#include "mozilla/TextEditor.h"
#include "mozilla/StaticPrefs_html5.h"
#include "mozilla/StaticPrefs_layout.h"
#include "nscore.h"
#include "nsGenericHTMLElement.h"
#include "nsAttrValueInlines.h"
#include "nsCOMPtr.h"
#include "nsAtom.h"
#include "nsQueryObject.h"
#include "nsIContentInlines.h"
#include "mozilla/dom/BindContext.h"
#include "mozilla/dom/Document.h"
#include "nsMappedAttributes.h"
#include "nsHTMLStyleSheet.h"
#include "nsPIDOMWindow.h"
#include "nsEscape.h"
#include "nsIFrameInlines.h"
#include "nsIScrollableFrame.h"
#include "nsView.h"
#include "nsViewManager.h"
#include "nsIWidget.h"
#include "nsRange.h"
#include "nsPresContext.h"
#include "nsNameSpaceManager.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 "nsUnicharUtils.h"
#include "nsGkAtoms.h"
#include "nsDOMCSSDeclaration.h"
#include "nsITextControlFrame.h"
#include "nsIForm.h"
#include "nsIFormControl.h"
#include "mozilla/dom/HTMLFormElement.h"
#include "nsFocusManager.h"
#include "nsAttrValueOrString.h"
#include "mozilla/InternalMutationEvent.h"
#include "nsDOMStringMap.h"
#include "nsLayoutUtils.h"
#include "mozAutoDocUpdate.h"
#include "nsHtml5Module.h"
#include "mozilla/dom/ElementInlines.h"
#include "HTMLFieldSetElement.h"
#include "nsTextNode.h"
#include "HTMLBRElement.h"
#include "HTMLMenuElement.h"
#include "nsDOMMutationObserver.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/FromParser.h"
#include "mozilla/dom/Link.h"
#include "mozilla/BloomFilter.h"
#include "mozilla/dom/ScriptLoader.h"
#include "nsVariant.h"
#include "nsDOMTokenList.h"
#include "nsThreadUtils.h"
#include "nsTextFragment.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/MouseEventBinding.h"
#include "mozilla/dom/TouchEvent.h"
#include "mozilla/ErrorResult.h"
#include "nsHTMLDocument.h"
#include "nsGlobalWindow.h"
#include "mozilla/dom/HTMLBodyElement.h"
#include "imgIContainer.h"
#include "nsComputedDOMStyle.h"
#include "mozilla/dom/HTMLLabelElement.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/CustomElementRegistry.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}};
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", eDir_LTR}, {"rtl", eDir_RTL}, {"auto", eDir_Auto}, {nullptr, 0}};
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::Table) {
// 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 = styleFrame->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?
int32_t controlType = formControl->ControlType();
if (controlType == NS_FORM_TEXTAREA) {
return true; // Spellchecked by default
}
// Is this anything other than an input text?
// Other inputs are not spellchecked.
if (controlType != NS_FORM_INPUT_TEXT) {
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) {
DoSetEditableFlag(!!value, aNotify);
return;
}
nsStyledElement::UpdateEditableState(aNotify);
}
EventStates nsGenericHTMLElement::IntrinsicState() const {
EventStates state = nsGenericHTMLElementBase::IntrinsicState();
if (GetDirectionality() == eDir_RTL) {
state |= NS_EVENT_STATE_RTL;
state &= ~NS_EVENT_STATE_LTR;
} else { // at least for HTML, directionality is exclusively LTR or RTL
NS_ASSERTION(GetDirectionality() == eDir_LTR,
"HTML element's directionality must be either RTL or LTR");
state |= NS_EVENT_STATE_LTR;
state &= ~NS_EVENT_STATE_RTL;
}
return state;
}
nsresult nsGenericHTMLElement::BindToTree(BindContext& aContext,
nsINode& aParent) {
nsresult rv = nsGenericHTMLElementBase::BindToTree(aContext, aParent);
NS_ENSURE_SUCCESS(rv, rv);
if (IsInUncomposedDoc()) {
RegAccessKey();
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, EmptyString(),
true);
self->SetNonce(nonce);
}));
}
// We need to consider a labels element is moved to another subtree
// with different root, it needs to update labels list and its root
// as well.
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots && slots->mLabelsList) {
slots->mLabelsList->MaybeResetRoot(SubtreeRoot());
}
return rv;
}
void nsGenericHTMLElement::UnbindFromTree(bool aNullParent) {
if (IsInUncomposedDoc()) {
UnregAccessKey();
}
RemoveFromNameTable();
if (GetContentEditableValue() == eTrue) {
Document* doc = GetComposedDoc();
if (doc) {
doc->ChangeContentEditableCount(this, -1);
}
}
nsStyledElement::UnbindFromTree(aNullParent);
// Invalidate .labels list. It will be repopulated when used the next time.
nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
if (slots && slots->mLabelsList) {
slots->mLabelsList->MaybeResetRoot(SubtreeRoot());
}
}
HTMLFormElement* nsGenericHTMLElement::FindAncestorForm(
HTMLFormElement* aCurrentForm) {
NS_ASSERTION(!HasAttr(kNameSpaceID_None, 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->GetParent()->ComputeIndexOf(child) != -1,
"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
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();
}
nsresult nsGenericHTMLElement::BeforeSetAttr(int32_t aNamespaceID,
nsAtom* aName,
const nsAttrValueOrString* aValue,
bool aNotify) {
if (aNamespaceID == kNameSpaceID_None) {
if (aName == nsGkAtoms::accesskey) {
// Have to unregister before clearing flag. See UnregAccessKey
UnregAccessKey();
if (!aValue) {
UnsetFlags(NODE_HAS_ACCESSKEY);
}
} else if (aName == nsGkAtoms::name) {
// Have to do this before clearing flag. See RemoveFromNameTable
RemoveFromNameTable();
if (!aValue || aValue->IsEmpty()) {
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);
}
nsresult 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::dir) {
Directionality dir = eDir_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;
// We don't want to have to keep getting the "dir" attribute in
// IntrinsicState, so we manually recompute our dir-related event states
// here and send the relevant update notifications.
EventStates dirStates;
if (aValue && aValue->Type() == nsAttrValue::eEnum) {
SetHasValidDir();
dirStates |= NS_EVENT_STATE_HAS_DIR_ATTR;
Directionality dirValue = (Directionality)aValue->GetEnumValue();
if (dirValue == eDir_Auto) {
dirStates |= NS_EVENT_STATE_DIR_ATTR_LIKE_AUTO;
} else {
dir = dirValue;
SetDirectionality(dir, aNotify);
if (dirValue == eDir_LTR) {
dirStates |= NS_EVENT_STATE_DIR_ATTR_LTR;
} else {
MOZ_ASSERT(dirValue == eDir_RTL);
dirStates |= NS_EVENT_STATE_DIR_ATTR_RTL;
}
}
} else {
if (aValue) {
// We have a value, just not a valid one.
dirStates |= NS_EVENT_STATE_HAS_DIR_ATTR;
}
ClearHasValidDir();
if (NodeInfo()->Equals(nsGkAtoms::bdi)) {
dirStates |= NS_EVENT_STATE_DIR_ATTR_LIKE_AUTO;
} else {
recomputeDirectionality = true;
}
}
// Now figure out what's changed about our dir states.
EventStates oldDirStates = State() & DIR_ATTR_STATES;
EventStates changedStates = dirStates ^ oldDirStates;
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(EmptyString(), eIgnoreCase))) {
editableCountDelta = -1;
}
if (aValue && (aValue->Equals(u"true"_ns, eIgnoreCase) ||
aValue->Equals(EmptyString(), eIgnoreCase))) {
++editableCountDelta;
}
ChangeEditableState(editableCountDelta);
} else if (aName == nsGkAtoms::accesskey) {
if (aValue && !aValue->Equals(EmptyString(), eIgnoreCase)) {
SetFlags(NODE_HAS_ACCESSKEY);
RegAccessKey();
}
} else if (aName == nsGkAtoms::inert &&
StaticPrefs::html5_inert_enabled()) {
if (aValue) {
AddStates(NS_EVENT_STATE_MOZINERT);
} else {
RemoveStates(NS_EVENT_STATE_MOZINERT);
}
} else if (aName == nsGkAtoms::name) {
if (aValue && !aValue->Equals(EmptyString(), 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());
}
}
}
// 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::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) {
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);
}
}
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;
}
nsPresContext* nsGenericHTMLElement::GetPresContext(PresContextFor aFor) {
// Get the document
Document* doc =
(aFor == eForComposedDoc) ? GetComposedDoc() : GetUncomposedDoc();
if (doc) {
return doc->GetPresContext();
}
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", NS_STYLE_FRAME_YES},
{"no", NS_STYLE_FRAME_NO},
{"1", NS_STYLE_FRAME_1},
{"0", NS_STYLE_FRAME_0},
{nullptr, 0}};
// TODO(emilio): Nobody uses the parsed attribute here.
static const nsAttrValue::EnumTable kScrollingTable[] = {
{"yes", NS_STYLE_FRAME_YES}, {"no", NS_STYLE_FRAME_NO},
{"on", NS_STYLE_FRAME_ON}, {"off", NS_STYLE_FRAME_OFF},
{"scroll", NS_STYLE_FRAME_SCROLL}, {"noscroll", NS_STYLE_FRAME_NOSCROLL},
{"auto", NS_STYLE_FRAME_AUTO}, {nullptr, 0}};
static const nsAttrValue::EnumTable kTableVAlignTable[] = {
{"top", StyleVerticalAlignKeyword::Top},
{"middle", StyleVerticalAlignKeyword::Middle},
{"bottom", StyleVerticalAlignKeyword::Bottom},
{"baseline", StyleVerticalAlignKeyword::Baseline},
{nullptr, 0}};
bool nsGenericHTMLElement::ParseAlignValue(const nsAString& aString,
nsAttrValue& aResult) {
static const nsAttrValue::EnumTable kAlignTable[] = {
{"left", StyleTextAlign::Left},
{"right", StyleTextAlign::Right},
{"top", StyleVerticalAlignKeyword::Top},
{"middle", StyleVerticalAlignKeyword::MozMiddleWithBaseline},
// Intentionally not bottom.
{"bottom", StyleVerticalAlignKeyword::Baseline},
{"center", StyleVerticalAlignKeyword::MozMiddleWithBaseline},
{"baseline", StyleVerticalAlignKeyword::Baseline},
{"texttop", StyleVerticalAlignKeyword::TextTop},
{"absmiddle", StyleVerticalAlignKeyword::Middle},
{"abscenter", StyleVerticalAlignKeyword::Middle},
{"absbottom", StyleVerticalAlignKeyword::Bottom},
{nullptr, 0}};
static_assert(uint8_t(StyleTextAlign::Left) !=
uint8_t(StyleVerticalAlignKeyword::Top) &&
uint8_t(StyleTextAlign::Left) !=
uint8_t(StyleVerticalAlignKeyword::MozMiddleWithBaseline) &&
uint8_t(StyleTextAlign::Left) !=
uint8_t(StyleVerticalAlignKeyword::Baseline) &&
uint8_t(StyleTextAlign::Left) !=
uint8_t(StyleVerticalAlignKeyword::TextTop) &&
uint8_t(StyleTextAlign::Left) !=
uint8_t(StyleVerticalAlignKeyword::Middle) &&
uint8_t(StyleTextAlign::Left) !=
uint8_t(StyleVerticalAlignKeyword::Bottom));
static_assert(uint8_t(StyleTextAlign::Right) !=
uint8_t(StyleVerticalAlignKeyword::Top) &&
uint8_t(StyleTextAlign::Right) !=
uint8_t(StyleVerticalAlignKeyword::MozMiddleWithBaseline) &&
uint8_t(StyleTextAlign::Right) !=
uint8_t(StyleVerticalAlignKeyword::Baseline) &&
uint8_t(StyleTextAlign::Right) !=
uint8_t(StyleVerticalAlignKeyword::TextTop) &&
uint8_t(StyleTextAlign::Right) !=
uint8_t(StyleVerticalAlignKeyword::Middle) &&
uint8_t(StyleTextAlign::Right) !=
uint8_t(StyleVerticalAlignKeyword::Bottom));
return aResult.ParseEnumValue(aString, kAlignTable, false);
}
//----------------------------------------
static const nsAttrValue::EnumTable kTableHAlignTable[] = {
{"left", StyleTextAlign::Left}, {"right", StyleTextAlign::Right},
{"center", StyleTextAlign::Center}, {"char", StyleTextAlign::Char},
{"justify", StyleTextAlign::Justify}, {nullptr, 0}};
bool nsGenericHTMLElement::ParseTableHAlignValue(const nsAString& aString,
nsAttrValue& aResult) {
return aResult.ParseEnumValue(aString, kTableHAlignTable, false);
}
//----------------------------------------
// This table is used for td, th, tr, col, thead, tbody and tfoot.
static const nsAttrValue::EnumTable kTableCellHAlignTable[] = {
{"left", StyleTextAlign::MozLeft},
{"right", StyleTextAlign::MozRight},
{"center", StyleTextAlign::MozCenter},
{"char", StyleTextAlign::Char},
{"justify", StyleTextAlign::Justify},
{"middle", StyleTextAlign::MozCenter},
{"absmiddle", StyleTextAlign::Center},
{nullptr, 0}};
bool nsGenericHTMLElement::ParseTableCellHAlignValue(const nsAString& aString,
nsAttrValue& aResult) {
return aResult.ParseEnumValue(aString, kTableCellHAlignTable, false);
}
//----------------------------------------
bool nsGenericHTMLElement::ParseTableVAlignValue(const nsAString& aString,
nsAttrValue& aResult) {
return aResult.ParseEnumValue(aString, kTableVAlignTable, false);
}
bool nsGenericHTMLElement::ParseDivAlignValue(const nsAString& aString,
nsAttrValue& aResult) {
return aResult.ParseEnumValue(aString, kDivAlignTable, false);
}
bool nsGenericHTMLElement::ParseImageAttribute(nsAtom* aAttribute,
const nsAString& aString,
nsAttrValue& aResult) {
if (aAttribute == nsGkAtoms::width || aAttribute == nsGkAtoms::height ||
aAttribute == nsGkAtoms::hspace || aAttribute == nsGkAtoms::vspace) {
return aResult.ParseHTMLDimension(aString);
}
if (aAttribute == nsGkAtoms::border) {
return aResult.ParseNonNegativeIntValue(aString);
}
return false;
}
bool nsGenericHTMLElement::ParseReferrerAttribute(const nsAString& aString,
nsAttrValue& aResult) {
using mozilla::dom::ReferrerInfo;
static const nsAttrValue::EnumTable kReferrerPolicyTable[] = {
{ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::No_referrer),
static_cast<int16_t>(ReferrerPolicy::No_referrer)},
{ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Origin),
static_cast<int16_t>(ReferrerPolicy::Origin)},
{ReferrerInfo::ReferrerPolicyToString(
ReferrerPolicy::Origin_when_cross_origin),
static_cast<int16_t>(ReferrerPolicy::Origin_when_cross_origin)},
{ReferrerInfo::ReferrerPolicyToString(
ReferrerPolicy::No_referrer_when_downgrade),
static_cast<int16_t>(ReferrerPolicy::No_referrer_when_downgrade)},
{ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Unsafe_url),
static_cast<int16_t>(ReferrerPolicy::Unsafe_url)},
{ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Strict_origin),
static_cast<int16_t>(ReferrerPolicy::Strict_origin)},
{ReferrerInfo::ReferrerPolicyToString(ReferrerPolicy::Same_origin),
static_cast<int16_t>(ReferrerPolicy::Same_origin)},
{ReferrerInfo::ReferrerPolicyToString(
ReferrerPolicy::Strict_origin_when_cross_origin),
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(const nsMappedAttributes* aAttributes,
MappedDeclarations& aDecls) {
const nsAttrValue* langValue = aAttributes->GetAttr(nsGkAtoms::lang);
if (!langValue) {
return;
}
MOZ_ASSERT(langValue->Type() == nsAttrValue::eAtom);
aDecls.SetIdentAtomValueIfUnset(eCSSProperty__x_lang,
langValue->GetAtomValue());
if (!aDecls.PropertyIsSet(eCSSProperty_text_emphasis_position)) {
const nsAtom* lang = langValue->GetAtomValue();
if (nsStyleUtil::MatchesLanguagePrefix(lang, u"zh")) {
aDecls.SetKeywordValue(eCSSProperty_text_emphasis_position,
NS_STYLE_TEXT_EMPHASIS_POSITION_DEFAULT_ZH);
} 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.
aDecls.SetKeywordValue(eCSSProperty_text_emphasis_position,
NS_STYLE_TEXT_EMPHASIS_POSITION_DEFAULT);
}
}
}
/**
* Handle attributes common to all html elements
*/
void nsGenericHTMLElement::MapCommonAttributesIntoExceptHidden(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
if (!aDecls.PropertyIsSet(eCSSProperty__moz_user_modify)) {
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::contenteditable);
if (value) {
if (value->Equals(nsGkAtoms::_empty, eCaseMatters) ||
value->Equals(nsGkAtoms::_true, eIgnoreCase)) {
aDecls.SetKeywordValue(eCSSProperty__moz_user_modify,
StyleUserModify::ReadWrite);
} else if (value->Equals(nsGkAtoms::_false, eIgnoreCase)) {
aDecls.SetKeywordValue(eCSSProperty__moz_user_modify,
StyleUserModify::ReadOnly);
}
}
}
MapLangAttributeInto(aAttributes, aDecls);
}
void nsGenericHTMLElement::MapCommonAttributesInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
MapCommonAttributesIntoExceptHidden(aAttributes, aDecls);
if (!aDecls.PropertyIsSet(eCSSProperty_display)) {
if (aAttributes->IndexOfAttr(nsGkAtoms::hidden) >= 0) {
aDecls.SetKeywordValue(eCSSProperty_display, StyleDisplay::None);
}
}
}
/* 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(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::align);
if (value && value->Type() == nsAttrValue::eEnum) {
int32_t align = value->GetEnumValue();
if (!aDecls.PropertyIsSet(eCSSProperty_float)) {
if (align == uint8_t(StyleTextAlign::Left)) {
aDecls.SetKeywordValue(eCSSProperty_float, StyleFloat::Left);
} else if (align == uint8_t(StyleTextAlign::Right)) {
aDecls.SetKeywordValue(eCSSProperty_float, StyleFloat::Right);
}
}
if (!aDecls.PropertyIsSet(eCSSProperty_vertical_align)) {
switch (align) {
case uint8_t(StyleTextAlign::Left):
case uint8_t(StyleTextAlign::Right):
break;
default:
aDecls.SetKeywordValue(eCSSProperty_vertical_align, align);
break;
}
}
}
}
void nsGenericHTMLElement::MapDivAlignAttributeInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
if (!aDecls.PropertyIsSet(eCSSProperty_text_align)) {
// align: enum
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::align);
if (value && value->Type() == nsAttrValue::eEnum)
aDecls.SetKeywordValue(eCSSProperty_text_align, value->GetEnumValue());
}
}
void nsGenericHTMLElement::MapVAlignAttributeInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
if (!aDecls.PropertyIsSet(eCSSProperty_vertical_align)) {
// align: enum
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::valign);
if (value && value->Type() == nsAttrValue::eEnum)
aDecls.SetKeywordValue(eCSSProperty_vertical_align,
value->GetEnumValue());
}
}
static void MapDimensionAttributeInto(MappedDeclarations& aDecls,
nsCSSPropertyID aProp,
const nsAttrValue& aValue) {
MOZ_ASSERT(!aDecls.PropertyIsSet(aProp),
"Why mapping the same property twice?");
if (aValue.Type() == nsAttrValue::eInteger) {
return aDecls.SetPixelValue(aProp, aValue.GetIntegerValue());
}
if (aValue.Type() == nsAttrValue::ePercent) {
return aDecls.SetPercentValue(aProp, aValue.GetPercentValue());
}
if (aValue.Type() == nsAttrValue::eDoubleValue) {
return aDecls.SetPixelValue(aProp, aValue.GetDoubleValue());
}
}
void nsGenericHTMLElement::MapImageMarginAttributeInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
const nsAttrValue* value;
// hspace: value
value = aAttributes->GetAttr(nsGkAtoms::hspace);
if (value) {
MapDimensionAttributeInto(aDecls, eCSSProperty_margin_left, *value);
MapDimensionAttributeInto(aDecls, eCSSProperty_margin_right, *value);
}
// vspace: value
value = aAttributes->GetAttr(nsGkAtoms::vspace);
if (value) {
MapDimensionAttributeInto(aDecls, eCSSProperty_margin_top, *value);
MapDimensionAttributeInto(aDecls, eCSSProperty_margin_bottom, *value);
}
}
void nsGenericHTMLElement::MapWidthAttributeInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
if (const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::width)) {
MapDimensionAttributeInto(aDecls, eCSSProperty_width, *value);
}
}
void nsGenericHTMLElement::MapHeightAttributeInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
if (const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::height)) {
MapDimensionAttributeInto(aDecls, eCSSProperty_height, *value);
}
}
void nsGenericHTMLElement::MapImageSizeAttributesInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls,
MapAspectRatio aMapAspectRatio) {
auto* width = aAttributes->GetAttr(nsGkAtoms::width);
auto* height = aAttributes->GetAttr(nsGkAtoms::height);
if (width) {
MapDimensionAttributeInto(aDecls, eCSSProperty_width, *width);
}
if (height) {
MapDimensionAttributeInto(aDecls, eCSSProperty_height, *height);
}
if (StaticPrefs::layout_css_width_and_height_map_to_aspect_ratio_enabled() &&
aMapAspectRatio == MapAspectRatio::Yes && width && height) {
Maybe<double> w;
if (width->Type() == nsAttrValue::eInteger) {
w.emplace(width->GetIntegerValue());
} else if (width->Type() == nsAttrValue::eDoubleValue) {
w.emplace(width->GetDoubleValue());
}
Maybe<double> h;
if (height->Type() == nsAttrValue::eInteger) {
h.emplace(height->GetIntegerValue());
} else if (height->Type() == nsAttrValue::eDoubleValue) {
h.emplace(height->GetDoubleValue());
}
if (w && h && *w != 0 && *h != 0) {
aDecls.SetAspectRatio(*w, *h);
}
}
}
void nsGenericHTMLElement::MapImageBorderAttributeInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
// border: pixels
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::border);
if (!value) return;
nscoord val = 0;
if (value->Type() == nsAttrValue::eInteger) val = value->GetIntegerValue();
aDecls.SetPixelValueIfUnset(eCSSProperty_border_top_width, (float)val);
aDecls.SetPixelValueIfUnset(eCSSProperty_border_right_width, (float)val);
aDecls.SetPixelValueIfUnset(eCSSProperty_border_bottom_width, (float)val);
aDecls.SetPixelValueIfUnset(eCSSProperty_border_left_width, (float)val);
aDecls.SetKeywordValueIfUnset(eCSSProperty_border_top_style,
StyleBorderStyle::Solid);
aDecls.SetKeywordValueIfUnset(eCSSProperty_border_right_style,
StyleBorderStyle::Solid);
aDecls.SetKeywordValueIfUnset(eCSSProperty_border_bottom_style,
StyleBorderStyle::Solid);
aDecls.SetKeywordValueIfUnset(eCSSProperty_border_left_style,
StyleBorderStyle::Solid);
aDecls.SetCurrentColorIfUnset(eCSSProperty_border_top_color);
aDecls.SetCurrentColorIfUnset(eCSSProperty_border_right_color);
aDecls.SetCurrentColorIfUnset(eCSSProperty_border_bottom_color);
aDecls.SetCurrentColorIfUnset(eCSSProperty_border_left_color);
}
void nsGenericHTMLElement::MapBackgroundInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
if (!aDecls.PropertyIsSet(eCSSProperty_background_image)) {
// background
nsAttrValue* value =
const_cast<nsAttrValue*>(aAttributes->GetAttr(nsGkAtoms::background));
if (value) {
aDecls.SetBackgroundImage(*value);
}
}
}
void nsGenericHTMLElement::MapBGColorInto(const nsMappedAttributes* aAttributes,
MappedDeclarations& aDecls) {
if (!aDecls.PropertyIsSet(eCSSProperty_background_color)) {
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::bgcolor);
nscolor color;
if (value && value->GetColorValue(color)) {
aDecls.SetColorValue(eCSSProperty_background_color, color);
}
}
}
void nsGenericHTMLElement::MapBackgroundAttributesInto(
const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
MapBackgroundInto(aAttributes, aDecls);
MapBGColorInto(aAttributes, aDecls);
}
//----------------------------------------------------------------------
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(kNameSpaceID_None, 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(kNameSpaceID_None, 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;
}
HTMLMenuElement* nsGenericHTMLElement::GetContextMenu() const {
nsAutoString value;
GetHTMLAttr(nsGkAtoms::contextmenu, value);
if (!value.IsEmpty()) {
// XXXsmaug How should this work in Shadow DOM?
Document* doc = GetUncomposedDoc();
if (doc) {
return HTMLMenuElement::FromNodeOrNull(doc->GetElementById(value));
}
}
return nullptr;
}
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);
}
//----------------------------------------------------------------------
nsGenericHTMLFormElement::nsGenericHTMLFormElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, uint8_t aType)
: nsGenericHTMLElement(std::move(aNodeInfo)),
nsIFormControl(aType),
mForm(nullptr),
mFieldSet(nullptr) {
// We should add the NS_EVENT_STATE_ENABLED bit here as needed, but
// that depends on our type, which is not initialized yet. So we
// have to do this in subclasses.
}
nsGenericHTMLFormElement::~nsGenericHTMLFormElement() {
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(nsGenericHTMLFormElement, nsGenericHTMLElement,
nsIFormControl)
nsINode* nsGenericHTMLFormElement::GetScopeChainParent() const {
return mForm ? mForm : nsGenericHTMLElement::GetScopeChainParent();
}
bool nsGenericHTMLFormElement::IsNodeOfType(uint32_t aFlags) const {
return !(aFlags & ~eHTML_FORM_CONTROL);
}
void nsGenericHTMLFormElement::SaveSubtreeState() {
SaveState();
nsGenericHTMLElement::SaveSubtreeState();
}
void nsGenericHTMLFormElement::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.");
SetForm(aForm, false);
}
void nsGenericHTMLFormElement::SetForm(HTMLFormElement* aForm,
bool aBindToTree) {
if (aForm) {
BeforeSetForm(aBindToTree);
}
// keep a *weak* ref to the form here
mForm = aForm;
}
void nsGenericHTMLFormElement::ClearForm(bool aRemoveFromForm,
bool aUnbindOrDelete) {
NS_ASSERTION((mForm != nullptr) == HasFlag(ADDED_TO_FORM),
"Form control should have had flag set correctly");
if (!mForm) {
return;
}
if (aRemoveFromForm) {
nsAutoString nameVal, idVal;
GetAttr(kNameSpaceID_None, nsGkAtoms::name, nameVal);
GetAttr(kNameSpaceID_None, nsGkAtoms::id, idVal);
mForm->RemoveElement(this, true);
if (!nameVal.IsEmpty()) {
mForm->RemoveElementFromTable(this, nameVal);
}
if (!idVal.IsEmpty()) {
mForm->RemoveElementFromTable(this, idVal);
}
}
UnsetFlags(ADDED_TO_FORM);
mForm = nullptr;
AfterClearForm(aUnbindOrDelete);
}
HTMLFormElement* nsGenericHTMLFormElement::GetFormElement() { return mForm; }
HTMLFieldSetElement* nsGenericHTMLFormElement::GetFieldSet() {
return mFieldSet;
}
nsIContent::IMEState nsGenericHTMLFormElement::GetDesiredIMEState() {
TextEditor* textEditor = GetTextEditorInternal();
if (!textEditor) {
return nsGenericHTMLElement::GetDesiredIMEState();
}
IMEState state;
nsresult rv = textEditor->GetPreferredIMEState(&state);
if (NS_FAILED(rv)) {
return nsGenericHTMLElement::GetDesiredIMEState();
}
return state;
}
nsresult nsGenericHTMLFormElement::BindToTree(BindContext& aContext,
nsINode& aParent) {
nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
NS_ENSURE_SUCCESS(rv, rv);
if (IsAutofocusable() && HasAttr(nsGkAtoms::autofocus) &&
aContext.AllowsAutoFocus()) {
aContext.OwnerDoc().SetAutoFocusElement(this);
}
// 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(kNameSpaceID_None, nsGkAtoms::form) ? IsInComposedDoc()
: aParent.IsContent()) {
UpdateFormOwner(true, nullptr);
}
// Set parent fieldset which should be used for the disabled state.
UpdateFieldSet(false);
return NS_OK;
}
void nsGenericHTMLFormElement::UnbindFromTree(bool aNullParent) {
// Save state before doing anything
SaveState();
if (mForm) {
// Might need to unset mForm
if (aNullParent) {
// No more parent means no more form
ClearForm(true, true);
} else {
// Recheck whether we should still have an mForm.
if (HasAttr(kNameSpaceID_None, nsGkAtoms::form) ||
!FindAncestorForm(mForm)) {
ClearForm(true, true);
} else {
UnsetFlags(MAYBE_ORPHAN_FORM_ELEMENT);
}
}
if (!mForm) {
// Our novalidate state might have changed
UpdateState(false);
}
}
// We have to remove the form id observer if there was one.
// We will re-add one later if needed (during bind to tree).
if (nsContentUtils::HasNonEmptyAttr(this, kNameSpaceID_None,
nsGkAtoms::form)) {
RemoveFormIdObserver();
}
nsGenericHTMLElement::UnbindFromTree(aNullParent);
// The element might not have a fieldset anymore.
UpdateFieldSet(false);
}
nsresult nsGenericHTMLFormElement::BeforeSetAttr(
int32_t aNameSpaceID, nsAtom* aName, const nsAttrValueOrString* aValue,
bool aNotify) {
if (aNameSpaceID == kNameSpaceID_None) {
nsAutoString tmp;
// remove the control from the hashtable as needed
if (mForm && (aName == nsGkAtoms::name || aName == nsGkAtoms::id)) {
GetAttr(kNameSpaceID_None, aName, tmp);
if (!tmp.IsEmpty()) {
mForm->RemoveElementFromTable(this, tmp);
}
}
if (mForm && aName == nsGkAtoms::type) {
GetAttr(kNameSpaceID_None, nsGkAtoms::name, tmp);
if (!tmp.IsEmpty()) {
mForm->RemoveElementFromTable(this, tmp);
}
GetAttr(kNameSpaceID_None, nsGkAtoms::id, tmp);
if (!tmp.IsEmpty()) {
mForm->RemoveElementFromTable(this, tmp);
}
mForm->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);
}
nsresult nsGenericHTMLFormElement::AfterSetAttr(
int32_t aNameSpaceID, nsAtom* aName, const nsAttrValue* aValue,
const nsAttrValue* aOldValue, nsIPrincipal* aMaybeScriptedPrincipal,
bool aNotify) {
if (aNameSpaceID == kNameSpaceID_None) {
// add the control to the hashtable as needed
if (mForm && (aName == nsGkAtoms::name || aName == nsGkAtoms::id) &&
aValue && !aValue->IsEmptyString()) {
MOZ_ASSERT(aValue->Type() == nsAttrValue::eAtom,
"Expected atom value for name/id");