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html_element.cc
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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004-2008, 2013, 2014 Apple Inc. All rights reserved.
* Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
* (http://www.torchmobile.com/)
* Copyright (C) 2011 Motorola Mobility. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "third_party/blink/renderer/core/html/html_element.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/renderer/bindings/core/v8/js_event_handler_for_content_attribute.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_union_stringtreatnullasemptystring_trustedscript.h"
#include "third_party/blink/renderer/core/accessibility/ax_object_cache.h"
#include "third_party/blink/renderer/core/css/css_color.h"
#include "third_party/blink/renderer/core/css/css_identifier_value.h"
#include "third_party/blink/renderer/core/css/css_numeric_literal_value.h"
#include "third_party/blink/renderer/core/css/css_property_names.h"
#include "third_party/blink/renderer/core/css/css_property_value_set.h"
#include "third_party/blink/renderer/core/css/css_ratio_value.h"
#include "third_party/blink/renderer/core/css/css_value_list.h"
#include "third_party/blink/renderer/core/css/style_change_reason.h"
#include "third_party/blink/renderer/core/css_value_keywords.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/document_fragment.h"
#include "third_party/blink/renderer/core/dom/element_rare_data.h"
#include "third_party/blink/renderer/core/dom/element_traversal.h"
#include "third_party/blink/renderer/core/dom/events/event_listener.h"
#include "third_party/blink/renderer/core/dom/events/scoped_event_queue.h"
#include "third_party/blink/renderer/core/dom/events/simulated_click_options.h"
#include "third_party/blink/renderer/core/dom/flat_tree_traversal.h"
#include "third_party/blink/renderer/core/dom/focus_params.h"
#include "third_party/blink/renderer/core/dom/node_computed_style.h"
#include "third_party/blink/renderer/core/dom/node_lists_node_data.h"
#include "third_party/blink/renderer/core/dom/node_traversal.h"
#include "third_party/blink/renderer/core/dom/popover_data.h"
#include "third_party/blink/renderer/core/dom/shadow_root.h"
#include "third_party/blink/renderer/core/dom/slot_assignment.h"
#include "third_party/blink/renderer/core/dom/slot_assignment_engine.h"
#include "third_party/blink/renderer/core/dom/slot_assignment_recalc_forbidden_scope.h"
#include "third_party/blink/renderer/core/dom/text.h"
#include "third_party/blink/renderer/core/editing/editing_utilities.h"
#include "third_party/blink/renderer/core/editing/serializers/serialization.h"
#include "third_party/blink/renderer/core/editing/spellcheck/spell_checker.h"
#include "third_party/blink/renderer/core/event_type_names.h"
#include "third_party/blink/renderer/core/events/keyboard_event.h"
#include "third_party/blink/renderer/core/events/pointer_event.h"
#include "third_party/blink/renderer/core/events/toggle_event.h"
#include "third_party/blink/renderer/core/frame/csp/content_security_policy.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/fullscreen/fullscreen.h"
#include "third_party/blink/renderer/core/html/custom/custom_element.h"
#include "third_party/blink/renderer/core/html/custom/custom_element_registry.h"
#include "third_party/blink/renderer/core/html/custom/element_internals.h"
#include "third_party/blink/renderer/core/html/forms/html_form_control_element.h"
#include "third_party/blink/renderer/core/html/forms/html_form_element.h"
#include "third_party/blink/renderer/core/html/forms/html_input_element.h"
#include "third_party/blink/renderer/core/html/forms/labels_node_list.h"
#include "third_party/blink/renderer/core/html/html_br_element.h"
#include "third_party/blink/renderer/core/html/html_dimension.h"
#include "third_party/blink/renderer/core/html/html_document.h"
#include "third_party/blink/renderer/core/html/html_frame_owner_element.h"
#include "third_party/blink/renderer/core/html/html_slot_element.h"
#include "third_party/blink/renderer/core/html/html_template_element.h"
#include "third_party/blink/renderer/core/html/parser/html_parser_idioms.h"
#include "third_party/blink/renderer/core/html/shadow/shadow_element_names.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/core/input_type_names.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/core/layout/adjust_for_absolute_zoom.h"
#include "third_party/blink/renderer/core/layout/layout_box.h"
#include "third_party/blink/renderer/core/layout/layout_box_model_object.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"
#include "third_party/blink/renderer/core/mathml/mathml_element.h"
#include "third_party/blink/renderer/core/mathml_names.h"
#include "third_party/blink/renderer/core/page/spatial_navigation.h"
#include "third_party/blink/renderer/core/paint/paint_layer_scrollable_area.h"
#include "third_party/blink/renderer/core/svg/svg_svg_element.h"
#include "third_party/blink/renderer/core/timing/soft_navigation_heuristics.h"
#include "third_party/blink/renderer/core/trustedtypes/trusted_script.h"
#include "third_party/blink/renderer/core/xml_names.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cancellable_task.h"
#include "third_party/blink/renderer/platform/text/bidi_resolver.h"
#include "third_party/blink/renderer/platform/text/bidi_text_run.h"
#include "third_party/blink/renderer/platform/text/text_run_iterator.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
namespace blink {
using AttributeChangedFunction =
void (HTMLElement::*)(const Element::AttributeModificationParams& params);
struct AttributeTriggers {
const QualifiedName& attribute;
WebFeature web_feature;
const AtomicString& event;
AttributeChangedFunction function;
};
namespace {
// https://html.spec.whatwg.org/multipage/interaction.html#editing-host
// An editing host is either an HTML element with its contenteditable attribute
// in the true state, or a child HTML element of a Document whose design mode
// enabled is true.
// https://w3c.github.io/editing/execCommand.html#editable
// Something is editable if it is a node; it is not an editing host; it does not
// have a contenteditable attribute set to the false state; its parent is an
// editing host or editable; and either it is an HTML element, or it is an svg
// or math element, or it is not an Element and its parent is an HTML element.
bool IsEditableOrEditingHost(const Node& node) {
auto* html_element = DynamicTo<HTMLElement>(node);
if (html_element) {
ContentEditableType content_editable =
html_element->contentEditableNormalized();
if (content_editable == ContentEditableType::kContentEditable ||
content_editable == ContentEditableType::kPlaintextOnly)
return true;
if (html_element->GetDocument().InDesignMode() &&
html_element->isConnected()) {
return true;
}
if (content_editable == ContentEditableType::kNotContentEditable)
return false;
}
if (!node.parentNode())
return false;
if (!IsEditableOrEditingHost(*node.parentNode()))
return false;
if (html_element)
return true;
if (IsA<SVGSVGElement>(node))
return true;
if (auto* mathml_element = DynamicTo<MathMLElement>(node))
return mathml_element->HasTagName(mathml_names::kMathTag);
return !IsA<Element>(node) && node.parentNode()->IsHTMLElement();
}
const WebFeature kNoWebFeature = static_cast<WebFeature>(0);
HTMLElement* GetParentForDirectionality(const HTMLElement& element,
bool& needs_slot_assignment_recalc) {
if (element.IsPseudoElement())
return DynamicTo<HTMLElement>(element.ParentOrShadowHostNode());
if (element.IsChildOfShadowHost()) {
ShadowRoot* root = element.ShadowRootOfParent();
if (!root || !root->HasSlotAssignment())
return nullptr;
if (root->NeedsSlotAssignmentRecalc()) {
needs_slot_assignment_recalc = true;
return nullptr;
}
}
if (auto* parent_slot = ToHTMLSlotElementIfSupportsAssignmentOrNull(
element.parentElement())) {
ShadowRoot* root = parent_slot->ContainingShadowRoot();
if (root->NeedsSlotAssignmentRecalc()) {
needs_slot_assignment_recalc = true;
return nullptr;
}
}
// We should take care of all cases that would trigger a slot assignment
// recalc, and delay the check for later for a performance reason.
SlotAssignmentRecalcForbiddenScope forbid_slot_recalc(element.GetDocument());
return DynamicTo<HTMLElement>(FlatTreeTraversal::ParentElement(element));
}
void CheckSoftNavigationHeuristicsTracking(const Document& document,
const Node* insertion_point) {
DCHECK(insertion_point);
if (document.IsTrackingSoftNavigationHeuristics()) {
LocalDOMWindow* window = document.domWindow();
if (!window) {
return;
}
LocalFrame* frame = window->GetFrame();
if (!frame || !frame->IsMainFrame()) {
return;
}
ScriptState* script_state = ToScriptStateForMainWorld(frame);
if (!script_state) {
return;
}
SoftNavigationHeuristics* heuristics =
SoftNavigationHeuristics::From(*window);
DCHECK(heuristics);
heuristics->ModifiedDOM(script_state);
}
}
} // anonymous namespace
String HTMLElement::DebugNodeName() const {
if (IsA<HTMLDocument>(GetDocument())) {
return TagQName().HasPrefix() ? Element::nodeName().UpperASCII()
: TagQName().LocalName().UpperASCII();
}
return Element::nodeName();
}
String HTMLElement::nodeName() const {
// localNameUpper may intern and cache an AtomicString.
DCHECK(IsMainThread());
// FIXME: Would be nice to have an atomicstring lookup based off uppercase
// chars that does not have to copy the string on a hit in the hash.
// FIXME: We should have a way to detect XHTML elements and replace the
// hasPrefix() check with it.
if (IsA<HTMLDocument>(GetDocument())) {
if (!TagQName().HasPrefix())
return TagQName().LocalNameUpper();
return Element::nodeName().UpperASCII();
}
return Element::nodeName();
}
bool HTMLElement::ShouldSerializeEndTag() const {
// See https://www.w3.org/TR/DOM-Parsing/
if (HasTagName(html_names::kAreaTag) || HasTagName(html_names::kBaseTag) ||
HasTagName(html_names::kBasefontTag) ||
HasTagName(html_names::kBgsoundTag) || HasTagName(html_names::kBrTag) ||
HasTagName(html_names::kColTag) || HasTagName(html_names::kEmbedTag) ||
HasTagName(html_names::kFrameTag) || HasTagName(html_names::kHrTag) ||
HasTagName(html_names::kImgTag) || HasTagName(html_names::kInputTag) ||
HasTagName(html_names::kKeygenTag) || HasTagName(html_names::kLinkTag) ||
HasTagName(html_names::kMetaTag) || HasTagName(html_names::kParamTag) ||
HasTagName(html_names::kSourceTag) || HasTagName(html_names::kTrackTag) ||
HasTagName(html_names::kWbrTag))
return false;
return true;
}
static inline CSSValueID UnicodeBidiAttributeForDirAuto(HTMLElement* element) {
if (element->HasTagName(html_names::kPreTag) ||
element->HasTagName(html_names::kTextareaTag))
return CSSValueID::kPlaintext;
// FIXME: For bdo element, dir="auto" should result in "bidi-override isolate"
// but we don't support having multiple values in unicode-bidi yet.
// See https://bugs.webkit.org/show_bug.cgi?id=73164.
return CSSValueID::kIsolate;
}
unsigned HTMLElement::ParseBorderWidthAttribute(
const AtomicString& value) const {
unsigned border_width = 0;
if (value.empty() || !ParseHTMLNonNegativeInteger(value, border_width)) {
if (HasTagName(html_names::kTableTag) && !value.IsNull())
return 1;
}
return border_width;
}
void HTMLElement::ApplyBorderAttributeToStyle(
const AtomicString& value,
MutableCSSPropertyValueSet* style) {
unsigned width = ParseBorderWidthAttribute(value);
for (CSSPropertyID property_id :
{CSSPropertyID::kBorderTopWidth, CSSPropertyID::kBorderBottomWidth,
CSSPropertyID::kBorderLeftWidth, CSSPropertyID::kBorderRightWidth}) {
AddPropertyToPresentationAttributeStyle(
style, property_id, width, CSSPrimitiveValue::UnitType::kPixels);
}
for (CSSPropertyID property_id :
{CSSPropertyID::kBorderTopStyle, CSSPropertyID::kBorderBottomStyle,
CSSPropertyID::kBorderLeftStyle, CSSPropertyID::kBorderRightStyle}) {
AddPropertyToPresentationAttributeStyle(style, property_id,
CSSValueID::kSolid);
}
}
bool HTMLElement::IsPresentationAttribute(const QualifiedName& name) const {
if (name == html_names::kAlignAttr ||
name == html_names::kContenteditableAttr ||
name == html_names::kHiddenAttr || name == html_names::kLangAttr ||
name.Matches(xml_names::kLangAttr) ||
name == html_names::kDraggableAttr || name == html_names::kDirAttr ||
name == html_names::kInertAttr)
return true;
return Element::IsPresentationAttribute(name);
}
static inline bool IsValidDirAttribute(const AtomicString& value) {
return EqualIgnoringASCIICase(value, "auto") ||
EqualIgnoringASCIICase(value, "ltr") ||
EqualIgnoringASCIICase(value, "rtl");
}
void HTMLElement::CollectStyleForPresentationAttribute(
const QualifiedName& name,
const AtomicString& value,
MutableCSSPropertyValueSet* style) {
if (name == html_names::kAlignAttr) {
if (EqualIgnoringASCIICase(value, "middle")) {
AddPropertyToPresentationAttributeStyle(style, CSSPropertyID::kTextAlign,
CSSValueID::kCenter);
} else {
AddPropertyToPresentationAttributeStyle(style, CSSPropertyID::kTextAlign,
value);
}
} else if (name == html_names::kContenteditableAttr) {
if (value.empty() || EqualIgnoringASCIICase(value, "true")) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kWebkitUserModify, CSSValueID::kReadWrite);
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kOverflowWrap, CSSValueID::kBreakWord);
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kWebkitLineBreak, CSSValueID::kAfterWhiteSpace);
UseCounter::Count(GetDocument(), WebFeature::kContentEditableTrue);
if (HasTagName(html_names::kHTMLTag)) {
UseCounter::Count(GetDocument(),
WebFeature::kContentEditableTrueOnHTML);
}
} else if (EqualIgnoringASCIICase(value, "plaintext-only")) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kWebkitUserModify,
CSSValueID::kReadWritePlaintextOnly);
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kOverflowWrap, CSSValueID::kBreakWord);
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kWebkitLineBreak, CSSValueID::kAfterWhiteSpace);
UseCounter::Count(GetDocument(),
WebFeature::kContentEditablePlainTextOnly);
} else if (EqualIgnoringASCIICase(value, "false")) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kWebkitUserModify, CSSValueID::kReadOnly);
}
} else if (name == html_names::kHiddenAttr) {
if (RuntimeEnabledFeatures::BeforeMatchEventEnabled(
GetExecutionContext()) &&
EqualIgnoringASCIICase(value, "until-found")) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kContentVisibility, CSSValueID::kHidden);
UseCounter::Count(GetDocument(), WebFeature::kHiddenUntilFoundAttribute);
} else {
AddPropertyToPresentationAttributeStyle(style, CSSPropertyID::kDisplay,
CSSValueID::kNone);
UseCounter::Count(GetDocument(), WebFeature::kHiddenAttribute);
}
} else if (name == html_names::kDraggableAttr) {
UseCounter::Count(GetDocument(), WebFeature::kDraggableAttribute);
if (EqualIgnoringASCIICase(value, "true")) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kWebkitUserDrag, CSSValueID::kElement);
AddPropertyToPresentationAttributeStyle(style, CSSPropertyID::kUserSelect,
CSSValueID::kNone);
} else if (EqualIgnoringASCIICase(value, "false")) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kWebkitUserDrag, CSSValueID::kNone);
}
} else if (name == html_names::kDirAttr) {
if (EqualIgnoringASCIICase(value, "auto")) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kUnicodeBidi,
UnicodeBidiAttributeForDirAuto(this));
} else {
if (IsValidDirAttribute(value)) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kDirection, value);
} else if (IsA<HTMLBodyElement>(*this)) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kDirection, "ltr");
}
if (!HasTagName(html_names::kBdiTag) &&
!HasTagName(html_names::kBdoTag) &&
!HasTagName(html_names::kOutputTag)) {
AddPropertyToPresentationAttributeStyle(
style, CSSPropertyID::kUnicodeBidi, CSSValueID::kIsolate);
}
}
} else if (name.Matches(xml_names::kLangAttr)) {
MapLanguageAttributeToLocale(value, style);
} else if (name == html_names::kLangAttr) {
// xml:lang has a higher priority than lang.
if (!FastHasAttribute(xml_names::kLangAttr))
MapLanguageAttributeToLocale(value, style);
} else {
Element::CollectStyleForPresentationAttribute(name, value, style);
}
}
// static
AttributeTriggers* HTMLElement::TriggersForAttributeName(
const QualifiedName& attr_name) {
const AtomicString& kNoEvent = g_null_atom;
static AttributeTriggers attribute_triggers[] = {
{html_names::kDirAttr, kNoWebFeature, kNoEvent,
&HTMLElement::OnDirAttrChanged},
{html_names::kFormAttr, kNoWebFeature, kNoEvent,
&HTMLElement::OnFormAttrChanged},
{html_names::kLangAttr, kNoWebFeature, kNoEvent,
&HTMLElement::OnLangAttrChanged},
{html_names::kNonceAttr, kNoWebFeature, kNoEvent,
&HTMLElement::OnNonceAttrChanged},
{html_names::kPopoverAttr, kNoWebFeature, kNoEvent,
&HTMLElement::OnPopoverChanged},
// Attributes handled by base class
{html_names::kFocusgroupAttr, kNoWebFeature, kNoEvent,
&HTMLElement::ReparseAttribute},
{html_names::kTabindexAttr, kNoWebFeature, kNoEvent,
&HTMLElement::ReparseAttribute},
{html_names::kOnabortAttr, kNoWebFeature, event_type_names::kAbort,
nullptr},
{html_names::kOnanimationendAttr, kNoWebFeature,
event_type_names::kAnimationend, nullptr},
{html_names::kOnanimationiterationAttr, kNoWebFeature,
event_type_names::kAnimationiteration, nullptr},
{html_names::kOnanimationstartAttr, kNoWebFeature,
event_type_names::kAnimationstart, nullptr},
{html_names::kOnauxclickAttr, kNoWebFeature, event_type_names::kAuxclick,
nullptr},
{html_names::kOnbeforecopyAttr, kNoWebFeature,
event_type_names::kBeforecopy, nullptr},
{html_names::kOnbeforecutAttr, kNoWebFeature,
event_type_names::kBeforecut, nullptr},
{html_names::kOnbeforeinputAttr, kNoWebFeature,
event_type_names::kBeforeinput, nullptr},
{html_names::kOnbeforepasteAttr, kNoWebFeature,
event_type_names::kBeforepaste, nullptr},
{html_names::kOnbeforetoggleAttr, kNoWebFeature,
event_type_names::kBeforetoggle, nullptr},
{html_names::kOnblurAttr, kNoWebFeature, event_type_names::kBlur,
nullptr},
{html_names::kOncancelAttr, kNoWebFeature, event_type_names::kCancel,
nullptr},
{html_names::kOncanplayAttr, kNoWebFeature, event_type_names::kCanplay,
nullptr},
{html_names::kOncanplaythroughAttr, kNoWebFeature,
event_type_names::kCanplaythrough, nullptr},
{html_names::kOnchangeAttr, kNoWebFeature, event_type_names::kChange,
nullptr},
{html_names::kOnclickAttr, kNoWebFeature, event_type_names::kClick,
nullptr},
{html_names::kOncloseAttr, kNoWebFeature, event_type_names::kClose,
nullptr},
{html_names::kOncontextlostAttr, kNoWebFeature,
event_type_names::kContextlost, nullptr},
{html_names::kOncontextmenuAttr, kNoWebFeature,
event_type_names::kContextmenu, nullptr},
{html_names::kOncontextrestoredAttr, kNoWebFeature,
event_type_names::kContextrestored, nullptr},
{html_names::kOncopyAttr, kNoWebFeature, event_type_names::kCopy,
nullptr},
{html_names::kOncuechangeAttr, kNoWebFeature,
event_type_names::kCuechange, nullptr},
{html_names::kOncutAttr, kNoWebFeature, event_type_names::kCut, nullptr},
{html_names::kOndblclickAttr, kNoWebFeature, event_type_names::kDblclick,
nullptr},
{html_names::kOndragAttr, kNoWebFeature, event_type_names::kDrag,
nullptr},
{html_names::kOndragendAttr, kNoWebFeature, event_type_names::kDragend,
nullptr},
{html_names::kOndragenterAttr, kNoWebFeature,
event_type_names::kDragenter, nullptr},
{html_names::kOndragleaveAttr, kNoWebFeature,
event_type_names::kDragleave, nullptr},
{html_names::kOndragoverAttr, kNoWebFeature, event_type_names::kDragover,
nullptr},
{html_names::kOndragstartAttr, kNoWebFeature,
event_type_names::kDragstart, nullptr},
{html_names::kOndropAttr, kNoWebFeature, event_type_names::kDrop,
nullptr},
{html_names::kOndurationchangeAttr, kNoWebFeature,
event_type_names::kDurationchange, nullptr},
{html_names::kOnemptiedAttr, kNoWebFeature, event_type_names::kEmptied,
nullptr},
{html_names::kOnendedAttr, kNoWebFeature, event_type_names::kEnded,
nullptr},
{html_names::kOnerrorAttr, kNoWebFeature, event_type_names::kError,
nullptr},
{html_names::kOnfocusAttr, kNoWebFeature, event_type_names::kFocus,
nullptr},
{html_names::kOnfocusinAttr, kNoWebFeature, event_type_names::kFocusin,
nullptr},
{html_names::kOnfocusoutAttr, kNoWebFeature, event_type_names::kFocusout,
nullptr},
{html_names::kOnformdataAttr, kNoWebFeature, event_type_names::kFormdata,
nullptr},
{html_names::kOngotpointercaptureAttr, kNoWebFeature,
event_type_names::kGotpointercapture, nullptr},
{html_names::kOninputAttr, kNoWebFeature, event_type_names::kInput,
nullptr},
{html_names::kOninvalidAttr, kNoWebFeature, event_type_names::kInvalid,
nullptr},
{html_names::kOnkeydownAttr, kNoWebFeature, event_type_names::kKeydown,
nullptr},
{html_names::kOnkeypressAttr, kNoWebFeature, event_type_names::kKeypress,
nullptr},
{html_names::kOnkeyupAttr, kNoWebFeature, event_type_names::kKeyup,
nullptr},
{html_names::kOnloadAttr, kNoWebFeature, event_type_names::kLoad,
nullptr},
{html_names::kOnloadeddataAttr, kNoWebFeature,
event_type_names::kLoadeddata, nullptr},
{html_names::kOnloadedmetadataAttr, kNoWebFeature,
event_type_names::kLoadedmetadata, nullptr},
{html_names::kOnloadstartAttr, kNoWebFeature,
event_type_names::kLoadstart, nullptr},
{html_names::kOnlostpointercaptureAttr, kNoWebFeature,
event_type_names::kLostpointercapture, nullptr},
{html_names::kOnmousedownAttr, kNoWebFeature,
event_type_names::kMousedown, nullptr},
{html_names::kOnmouseenterAttr, kNoWebFeature,
event_type_names::kMouseenter, nullptr},
{html_names::kOnmouseleaveAttr, kNoWebFeature,
event_type_names::kMouseleave, nullptr},
{html_names::kOnmousemoveAttr, kNoWebFeature,
event_type_names::kMousemove, nullptr},
{html_names::kOnmouseoutAttr, kNoWebFeature, event_type_names::kMouseout,
nullptr},
{html_names::kOnmouseoverAttr, kNoWebFeature,
event_type_names::kMouseover, nullptr},
{html_names::kOnmouseupAttr, kNoWebFeature, event_type_names::kMouseup,
nullptr},
{html_names::kOnmousewheelAttr, kNoWebFeature,
event_type_names::kMousewheel, nullptr},
{html_names::kOnoverscrollAttr, kNoWebFeature,
event_type_names::kOverscroll, nullptr},
{html_names::kOnpasteAttr, kNoWebFeature, event_type_names::kPaste,
nullptr},
{html_names::kOnpauseAttr, kNoWebFeature, event_type_names::kPause,
nullptr},
{html_names::kOnplayAttr, kNoWebFeature, event_type_names::kPlay,
nullptr},
{html_names::kOnplayingAttr, kNoWebFeature, event_type_names::kPlaying,
nullptr},
{html_names::kOnpointercancelAttr, kNoWebFeature,
event_type_names::kPointercancel, nullptr},
{html_names::kOnpointerdownAttr, kNoWebFeature,
event_type_names::kPointerdown, nullptr},
{html_names::kOnpointerenterAttr, kNoWebFeature,
event_type_names::kPointerenter, nullptr},
{html_names::kOnpointerleaveAttr, kNoWebFeature,
event_type_names::kPointerleave, nullptr},
{html_names::kOnpointermoveAttr, kNoWebFeature,
event_type_names::kPointermove, nullptr},
{html_names::kOnpointeroutAttr, kNoWebFeature,
event_type_names::kPointerout, nullptr},
{html_names::kOnpointeroverAttr, kNoWebFeature,
event_type_names::kPointerover, nullptr},
{html_names::kOnpointerrawupdateAttr, kNoWebFeature,
event_type_names::kPointerrawupdate, nullptr},
{html_names::kOnpointerupAttr, kNoWebFeature,
event_type_names::kPointerup, nullptr},
{html_names::kOnprogressAttr, kNoWebFeature, event_type_names::kProgress,
nullptr},
{html_names::kOnratechangeAttr, kNoWebFeature,
event_type_names::kRatechange, nullptr},
{html_names::kOnresetAttr, kNoWebFeature, event_type_names::kReset,
nullptr},
{html_names::kOnresizeAttr, kNoWebFeature, event_type_names::kResize,
nullptr},
{html_names::kOnscrollAttr, kNoWebFeature, event_type_names::kScroll,
nullptr},
{html_names::kOnscrollendAttr, kNoWebFeature,
event_type_names::kScrollend, nullptr},
{html_names::kOnseekedAttr, kNoWebFeature, event_type_names::kSeeked,
nullptr},
{html_names::kOnseekingAttr, kNoWebFeature, event_type_names::kSeeking,
nullptr},
{html_names::kOnsecuritypolicyviolationAttr, kNoWebFeature,
event_type_names::kSecuritypolicyviolation, nullptr},
{html_names::kOnselectAttr, kNoWebFeature, event_type_names::kSelect,
nullptr},
{html_names::kOnselectstartAttr, kNoWebFeature,
event_type_names::kSelectstart, nullptr},
{html_names::kOnslotchangeAttr, kNoWebFeature,
event_type_names::kSlotchange, nullptr},
{html_names::kOnstalledAttr, kNoWebFeature, event_type_names::kStalled,
nullptr},
{html_names::kOnsubmitAttr, kNoWebFeature, event_type_names::kSubmit,
nullptr},
{html_names::kOnsuspendAttr, kNoWebFeature, event_type_names::kSuspend,
nullptr},
{html_names::kOntimeupdateAttr, kNoWebFeature,
event_type_names::kTimeupdate, nullptr},
{html_names::kOntoggleAttr, kNoWebFeature, event_type_names::kToggle,
nullptr},
{html_names::kOntouchcancelAttr, kNoWebFeature,
event_type_names::kTouchcancel, nullptr},
{html_names::kOntouchendAttr, kNoWebFeature, event_type_names::kTouchend,
nullptr},
{html_names::kOntouchmoveAttr, kNoWebFeature,
event_type_names::kTouchmove, nullptr},
{html_names::kOntouchstartAttr, kNoWebFeature,
event_type_names::kTouchstart, nullptr},
{html_names::kOntransitionendAttr, kNoWebFeature,
event_type_names::kWebkitTransitionEnd, nullptr},
{html_names::kOnvolumechangeAttr, kNoWebFeature,
event_type_names::kVolumechange, nullptr},
{html_names::kOnwaitingAttr, kNoWebFeature, event_type_names::kWaiting,
nullptr},
{html_names::kOnwebkitanimationendAttr, kNoWebFeature,
event_type_names::kWebkitAnimationEnd, nullptr},
{html_names::kOnwebkitanimationiterationAttr, kNoWebFeature,
event_type_names::kWebkitAnimationIteration, nullptr},
{html_names::kOnwebkitanimationstartAttr, kNoWebFeature,
event_type_names::kWebkitAnimationStart, nullptr},
{html_names::kOnwebkitfullscreenchangeAttr, kNoWebFeature,
event_type_names::kWebkitfullscreenchange, nullptr},
{html_names::kOnwebkitfullscreenerrorAttr, kNoWebFeature,
event_type_names::kWebkitfullscreenerror, nullptr},
{html_names::kOnwebkittransitionendAttr, kNoWebFeature,
event_type_names::kWebkitTransitionEnd, nullptr},
{html_names::kOnwheelAttr, kNoWebFeature, event_type_names::kWheel,
nullptr},
// Begin ARIA attributes.
{html_names::kAriaActivedescendantAttr,
WebFeature::kARIAActiveDescendantAttribute, kNoEvent, nullptr},
{html_names::kAriaAtomicAttr, WebFeature::kARIAAtomicAttribute, kNoEvent,
nullptr},
{html_names::kAriaAutocompleteAttr,
WebFeature::kARIAAutocompleteAttribute, kNoEvent, nullptr},
{html_names::kAriaBusyAttr, WebFeature::kARIABusyAttribute, kNoEvent,
nullptr},
{html_names::kAriaCheckedAttr, WebFeature::kARIACheckedAttribute,
kNoEvent, nullptr},
{html_names::kAriaColcountAttr, WebFeature::kARIAColCountAttribute,
kNoEvent, nullptr},
{html_names::kAriaColindexAttr, WebFeature::kARIAColIndexAttribute,
kNoEvent, nullptr},
{html_names::kAriaColspanAttr, WebFeature::kARIAColSpanAttribute,
kNoEvent, nullptr},
{html_names::kAriaControlsAttr, WebFeature::kARIAControlsAttribute,
kNoEvent, nullptr},
{html_names::kAriaCurrentAttr, WebFeature::kARIACurrentAttribute,
kNoEvent, nullptr},
{html_names::kAriaDescribedbyAttr, WebFeature::kARIADescribedByAttribute,
kNoEvent, nullptr},
{html_names::kAriaDescriptionAttr, WebFeature::kARIADescriptionAttribute,
kNoEvent, nullptr},
{html_names::kAriaDetailsAttr, WebFeature::kARIADetailsAttribute,
kNoEvent, nullptr},
{html_names::kAriaDisabledAttr, WebFeature::kARIADisabledAttribute,
kNoEvent, nullptr},
{html_names::kAriaDropeffectAttr, WebFeature::kARIADropEffectAttribute,
kNoEvent, nullptr},
{html_names::kAriaErrormessageAttr,
WebFeature::kARIAErrorMessageAttribute, kNoEvent, nullptr},
{html_names::kAriaExpandedAttr, WebFeature::kARIAExpandedAttribute,
kNoEvent, nullptr},
{html_names::kAriaFlowtoAttr, WebFeature::kARIAFlowToAttribute, kNoEvent,
nullptr},
{html_names::kAriaGrabbedAttr, WebFeature::kARIAGrabbedAttribute,
kNoEvent, nullptr},
{html_names::kAriaHaspopupAttr, WebFeature::kARIAHasPopupAttribute,
kNoEvent, nullptr},
{html_names::kAriaHiddenAttr, WebFeature::kARIAHiddenAttribute, kNoEvent,
nullptr},
{html_names::kAriaInvalidAttr, WebFeature::kARIAInvalidAttribute,
kNoEvent, nullptr},
{html_names::kAriaKeyshortcutsAttr,
WebFeature::kARIAKeyShortcutsAttribute, kNoEvent, nullptr},
{html_names::kAriaLabelAttr, WebFeature::kARIALabelAttribute, kNoEvent,
nullptr},
{html_names::kAriaLabeledbyAttr, WebFeature::kARIALabeledByAttribute,
kNoEvent, nullptr},
{html_names::kAriaLabelledbyAttr, WebFeature::kARIALabelledByAttribute,
kNoEvent, nullptr},
{html_names::kAriaLevelAttr, WebFeature::kARIALevelAttribute, kNoEvent,
nullptr},
{html_names::kAriaLiveAttr, WebFeature::kARIALiveAttribute, kNoEvent,
nullptr},
{html_names::kAriaModalAttr, WebFeature::kARIAModalAttribute, kNoEvent,
nullptr},
{html_names::kAriaMultilineAttr, WebFeature::kARIAMultilineAttribute,
kNoEvent, nullptr},
{html_names::kAriaMultiselectableAttr,
WebFeature::kARIAMultiselectableAttribute, kNoEvent, nullptr},
{html_names::kAriaOrientationAttr, WebFeature::kARIAOrientationAttribute,
kNoEvent, nullptr},
{html_names::kAriaOwnsAttr, WebFeature::kARIAOwnsAttribute, kNoEvent,
nullptr},
{html_names::kAriaPlaceholderAttr, WebFeature::kARIAPlaceholderAttribute,
kNoEvent, nullptr},
{html_names::kAriaPosinsetAttr, WebFeature::kARIAPosInSetAttribute,
kNoEvent, nullptr},
{html_names::kAriaPressedAttr, WebFeature::kARIAPressedAttribute,
kNoEvent, nullptr},
{html_names::kAriaReadonlyAttr, WebFeature::kARIAReadOnlyAttribute,
kNoEvent, nullptr},
{html_names::kAriaRelevantAttr, WebFeature::kARIARelevantAttribute,
kNoEvent, nullptr},
{html_names::kAriaRequiredAttr, WebFeature::kARIARequiredAttribute,
kNoEvent, nullptr},
{html_names::kAriaRoledescriptionAttr,
WebFeature::kARIARoleDescriptionAttribute, kNoEvent, nullptr},
{html_names::kAriaRowcountAttr, WebFeature::kARIARowCountAttribute,
kNoEvent, nullptr},
{html_names::kAriaRowindexAttr, WebFeature::kARIARowIndexAttribute,
kNoEvent, nullptr},
{html_names::kAriaRowspanAttr, WebFeature::kARIARowSpanAttribute,
kNoEvent, nullptr},
{html_names::kAriaSelectedAttr, WebFeature::kARIASelectedAttribute,
kNoEvent, nullptr},
{html_names::kAriaSetsizeAttr, WebFeature::kARIASetSizeAttribute,
kNoEvent, nullptr},
{html_names::kAriaSortAttr, WebFeature::kARIASortAttribute, kNoEvent,
nullptr},
{html_names::kAriaTouchpassthroughAttr,
WebFeature::kARIATouchpassthroughAttribute, kNoEvent, nullptr},
{html_names::kAriaValuemaxAttr, WebFeature::kARIAValueMaxAttribute,
kNoEvent, nullptr},
{html_names::kAriaValueminAttr, WebFeature::kARIAValueMinAttribute,
kNoEvent, nullptr},
{html_names::kAriaValuenowAttr, WebFeature::kARIAValueNowAttribute,
kNoEvent, nullptr},
{html_names::kAriaValuetextAttr, WebFeature::kARIAValueTextAttribute,
kNoEvent, nullptr},
{html_names::kAriaVirtualcontentAttr,
WebFeature::kARIAVirtualcontentAttribute, kNoEvent, nullptr},
// End ARIA attributes.
{html_names::kAutocapitalizeAttr, WebFeature::kAutocapitalizeAttribute,
kNoEvent, nullptr},
};
using AttributeToTriggerIndexMap = HashMap<QualifiedName, uint32_t>;
DEFINE_STATIC_LOCAL(AttributeToTriggerIndexMap,
attribute_to_trigger_index_map, ());
if (!attribute_to_trigger_index_map.size()) {
for (uint32_t i = 0; i < std::size(attribute_triggers); ++i) {
DCHECK(attribute_triggers[i].attribute.NamespaceURI().IsNull())
<< "Lookup table does not work for namespaced attributes because "
"they would not match for different prefixes";
attribute_to_trigger_index_map.insert(attribute_triggers[i].attribute, i);
}
}
auto iter = attribute_to_trigger_index_map.find(attr_name);
if (iter != attribute_to_trigger_index_map.end())
return &attribute_triggers[iter->value];
return nullptr;
}
// static
const AtomicString& HTMLElement::EventNameForAttributeName(
const QualifiedName& attr_name) {
AttributeTriggers* triggers = TriggersForAttributeName(attr_name);
if (triggers)
return triggers->event;
return g_null_atom;
}
void HTMLElement::AttributeChanged(const AttributeModificationParams& params) {
Element::AttributeChanged(params);
if (params.name == html_names::kDisabledAttr &&
IsFormAssociatedCustomElement() &&
params.old_value.IsNull() != params.new_value.IsNull()) {
EnsureElementInternals().DisabledAttributeChanged();
if (params.reason == AttributeModificationReason::kDirectly &&
IsDisabledFormControl() && AdjustedFocusedElementInTreeScope() == this)
blur();
return;
}
if (params.name == html_names::kReadonlyAttr &&
IsFormAssociatedCustomElement() &&
params.old_value.IsNull() != params.new_value.IsNull()) {
EnsureElementInternals().ReadonlyAttributeChanged();
return;
}
if (params.reason != AttributeModificationReason::kDirectly)
return;
// adjustedFocusedElementInTreeScope() is not trivial. We should check
// attribute names, then call adjustedFocusedElementInTreeScope().
if (params.name == html_names::kHiddenAttr && !params.new_value.IsNull()) {
if (AdjustedFocusedElementInTreeScope() == this)
blur();
} else if (params.name == html_names::kSpellcheckAttr) {
if (GetDocument().GetFrame()) {
GetDocument().GetFrame()->GetSpellChecker().RespondToChangedEnablement(
*this, IsSpellCheckingEnabled());
}
} else if (params.name == html_names::kContenteditableAttr) {
if (GetDocument().GetFrame()) {
GetDocument()
.GetFrame()
->GetSpellChecker()
.RemoveSpellingAndGrammarMarkers(
*this, SpellChecker::ElementsType::kOnlyNonEditable);
}
if (AdjustedFocusedElementInTreeScope() != this)
return;
// The attribute change may cause supportsFocus() to return false
// for the element which had focus.
//
// TODO(tkent): We should avoid updating style. We'd like to check only
// DOM-level focusability here.
GetDocument().UpdateStyleAndLayoutTreeForNode(this);
if (!SupportsFocus())
blur();
} else if (params.name == html_names::kAnchorAttr && HasPopoverAttribute()) {
DCHECK(RuntimeEnabledFeatures::HTMLPopoverAttributeEnabled(
GetDocument().GetExecutionContext()));
ResetPopoverAnchorObserver();
}
}
void HTMLElement::ParseAttribute(const AttributeModificationParams& params) {
AttributeTriggers* triggers = TriggersForAttributeName(params.name);
if (!triggers) {
if (!params.name.NamespaceURI().IsNull()) {
// AttributeTriggers lookup table does not support namespaced attributes.
// Fall back to Element implementation for attributes like xml:lang.
Element::ParseAttribute(params);
}
return;
}
if (triggers->event != g_null_atom) {
SetAttributeEventListener(
triggers->event,
JSEventHandlerForContentAttribute::Create(
GetExecutionContext(), params.name, params.new_value));
}
if (triggers->web_feature != kNoWebFeature) {
// Count usage of attributes but ignore attributes in user agent shadow DOM.
if (!IsInUserAgentShadowRoot())
UseCounter::Count(GetDocument(), triggers->web_feature);
}
if (triggers->function)
((*this).*(triggers->function))(params);
}
DocumentFragment* HTMLElement::TextToFragment(const String& text,
ExceptionState& exception_state) {
DocumentFragment* fragment = DocumentFragment::Create(GetDocument());
unsigned i, length = text.length();
UChar c = 0;
for (unsigned start = 0; start < length;) {
// Find next line break.
for (i = start; i < length; i++) {
c = text[i];
if (c == '\r' || c == '\n')
break;
}
if (i > start) {
fragment->AppendChild(
Text::Create(GetDocument(), text.Substring(start, i - start)),
exception_state);
if (exception_state.HadException())
return nullptr;
}
if (i == length)
break;
fragment->AppendChild(MakeGarbageCollected<HTMLBRElement>(GetDocument()),
exception_state);
if (exception_state.HadException())
return nullptr;
// Make sure \r\n doesn't result in two line breaks.
if (c == '\r' && i + 1 < length && text[i + 1] == '\n')
i++;
start = i + 1; // Character after line break.
}
return fragment;
}
V8UnionStringTreatNullAsEmptyStringOrTrustedScript*
HTMLElement::innerTextForBinding() {
return MakeGarbageCollected<
V8UnionStringTreatNullAsEmptyStringOrTrustedScript>(innerText());
}
void HTMLElement::setInnerTextForBinding(
const V8UnionStringTreatNullAsEmptyStringOrTrustedScript*
string_or_trusted_script,
ExceptionState& exception_state) {
String value;
switch (string_or_trusted_script->GetContentType()) {
case V8UnionStringTreatNullAsEmptyStringOrTrustedScript::ContentType::
kStringTreatNullAsEmptyString:
value = string_or_trusted_script->GetAsStringTreatNullAsEmptyString();
break;
case V8UnionStringTreatNullAsEmptyStringOrTrustedScript::ContentType::
kTrustedScript:
value = string_or_trusted_script->GetAsTrustedScript()->toString();
break;
}
setInnerText(value);
}
String HTMLElement::innerText() {
return Element::innerText();
}
void HTMLElement::setInnerText(const String& text) {
// FIXME: This doesn't take whitespace collapsing into account at all.
// The usage of ASSERT_NO_EXCEPTION in this function is subject to mutation
// events being fired while removing elements. By delaying them to the end of
// the function, we can guarantee that no exceptions will be thrown.
EventQueueScope delay_mutation_events;
if (!text.Contains('\n') && !text.Contains('\r')) {
if (text.empty()) {
RemoveChildren();
return;
}
ReplaceChildrenWithText(this, text, ASSERT_NO_EXCEPTION);
return;
}
// Add text nodes and <br> elements.
DocumentFragment* fragment = TextToFragment(text, ASSERT_NO_EXCEPTION);
ReplaceChildrenWithFragment(this, fragment, ASSERT_NO_EXCEPTION);
}
void HTMLElement::setOuterText(const String& text,
ExceptionState& exception_state) {
ContainerNode* parent = parentNode();
if (!parent) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNoModificationAllowedError,
"The element has no parent.");
return;
}
Node* prev = previousSibling();
Node* next = nextSibling();
Node* new_child = nullptr;
// Convert text to fragment with <br> tags instead of linebreaks if needed.
if (text.Contains('\r') || text.Contains('\n'))
new_child = TextToFragment(text, exception_state);
else
new_child = Text::Create(GetDocument(), text);
if (exception_state.HadException())
return;
parent->ReplaceChild(new_child, this, exception_state);
Node* node = next ? next->previousSibling() : nullptr;
auto* next_text_node = DynamicTo<Text>(node);
if (!exception_state.HadException() && next_text_node)
MergeWithNextTextNode(next_text_node, exception_state);
auto* prev_text_node = DynamicTo<Text>(prev);
if (!exception_state.HadException() && prev && prev->IsTextNode())
MergeWithNextTextNode(prev_text_node, exception_state);
}
void HTMLElement::ApplyAspectRatioToStyle(const AtomicString& width,
const AtomicString& height,
MutableCSSPropertyValueSet* style) {
HTMLDimension width_dim;
if (!ParseDimensionValue(width, width_dim) || !width_dim.IsAbsolute())
return;
HTMLDimension height_dim;
if (!ParseDimensionValue(height, height_dim) || !height_dim.IsAbsolute())
return;
ApplyAspectRatioToStyle(width_dim.Value(), height_dim.Value(), style);
}
void HTMLElement::ApplyIntegerAspectRatioToStyle(
const AtomicString& width,
const AtomicString& height,
MutableCSSPropertyValueSet* style) {
unsigned width_val = 0;
if (!ParseHTMLNonNegativeInteger(width, width_val))
return;
unsigned height_val = 0;
if (!ParseHTMLNonNegativeInteger(height, height_val))