| /* |
| * 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 "core/html/HTMLElement.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/ScriptEventListener.h" |
| #include "core/CSSPropertyNames.h" |
| #include "core/CSSValueKeywords.h" |
| #include "core/HTMLNames.h" |
| #include "core/MathMLNames.h" |
| #include "core/XMLNames.h" |
| #include "core/css/CSSColorValue.h" |
| #include "core/css/CSSMarkup.h" |
| #include "core/css/StylePropertySet.h" |
| #include "core/dom/DocumentFragment.h" |
| #include "core/dom/ElementTraversal.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/NodeComputedStyle.h" |
| #include "core/dom/NodeTraversal.h" |
| #include "core/dom/StyleChangeReason.h" |
| #include "core/dom/Text.h" |
| #include "core/dom/shadow/ElementShadow.h" |
| #include "core/dom/shadow/FlatTreeTraversal.h" |
| #include "core/dom/shadow/ShadowRoot.h" |
| #include "core/editing/EditingUtilities.h" |
| #include "core/editing/serializers/Serialization.h" |
| #include "core/editing/spellcheck/SpellChecker.h" |
| #include "core/events/EventListener.h" |
| #include "core/events/KeyboardEvent.h" |
| #include "core/frame/Settings.h" |
| #include "core/frame/UseCounter.h" |
| #include "core/frame/csp/ContentSecurityPolicy.h" |
| #include "core/html/HTMLBRElement.h" |
| #include "core/html/HTMLDimension.h" |
| #include "core/html/HTMLFormElement.h" |
| #include "core/html/HTMLInputElement.h" |
| #include "core/html/HTMLMenuElement.h" |
| #include "core/html/HTMLTemplateElement.h" |
| #include "core/html/parser/HTMLParserIdioms.h" |
| #include "core/layout/LayoutBoxModelObject.h" |
| #include "core/layout/LayoutObject.h" |
| #include "core/page/SpatialNavigation.h" |
| #include "core/svg/SVGSVGElement.h" |
| #include "platform/Language.h" |
| #include "platform/text/BidiResolver.h" |
| #include "platform/text/BidiTextRun.h" |
| #include "platform/text/TextRunIterator.h" |
| #include "platform/wtf/StdLibExtras.h" |
| #include "platform/wtf/text/CString.h" |
| |
| namespace blink { |
| |
| using namespace cssvalue; |
| using namespace HTMLNames; |
| using namespace WTF; |
| |
| using namespace std; |
| |
| namespace { |
| |
| // https://w3c.github.io/editing/execCommand.html#editing-host |
| bool IsEditingHost(const Node& node) { |
| if (!node.IsHTMLElement()) |
| return false; |
| String normalized_value = ToHTMLElement(node).contentEditable(); |
| if (normalized_value == "true" || normalized_value == "plaintext-only") |
| return true; |
| return node.GetDocument().InDesignMode() && |
| node.GetDocument().documentElement() == &node; |
| } |
| |
| // https://w3c.github.io/editing/execCommand.html#editable |
| bool IsEditable(const Node& node) { |
| if (IsEditingHost(node)) |
| return false; |
| if (node.IsHTMLElement() && ToHTMLElement(node).contentEditable() == "false") |
| return false; |
| if (!node.parentNode()) |
| return false; |
| if (!IsEditingHost(*node.parentNode()) && !IsEditable(*node.parentNode())) |
| return false; |
| if (node.IsHTMLElement()) |
| return true; |
| if (isSVGSVGElement(node)) |
| return true; |
| if (node.IsElementNode() && ToElement(node).HasTagName(MathMLNames::mathTag)) |
| return true; |
| return !node.IsElementNode() && node.parentNode()->IsHTMLElement(); |
| } |
| |
| } // anonymous namespace |
| |
| DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(HTMLElement); |
| |
| String HTMLElement::DebugNodeName() const { |
| if (GetDocument().IsHTMLDocument()) { |
| 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 (GetDocument().IsHTMLDocument()) { |
| 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(areaTag) || HasTagName(baseTag) || HasTagName(basefontTag) || |
| HasTagName(bgsoundTag) || HasTagName(brTag) || HasTagName(colTag) || |
| HasTagName(embedTag) || HasTagName(frameTag) || HasTagName(hrTag) || |
| HasTagName(imgTag) || HasTagName(inputTag) || HasTagName(keygenTag) || |
| HasTagName(linkTag) || HasTagName(metaTag) || HasTagName(paramTag) || |
| HasTagName(sourceTag) || HasTagName(trackTag) || HasTagName(wbrTag)) |
| return false; |
| return true; |
| } |
| |
| static inline CSSValueID UnicodeBidiAttributeForDirAuto(HTMLElement* element) { |
| if (element->HasTagName(preTag) || element->HasTagName(textareaTag)) |
| return CSSValueWebkitPlaintext; |
| // 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 CSSValueWebkitIsolate; |
| } |
| |
| unsigned HTMLElement::ParseBorderWidthAttribute( |
| const AtomicString& value) const { |
| unsigned border_width = 0; |
| if (value.IsEmpty() || !ParseHTMLNonNegativeInteger(value, border_width)) { |
| if (HasTagName(tableTag) && !value.IsNull()) |
| return 1; |
| } |
| return border_width; |
| } |
| |
| void HTMLElement::ApplyBorderAttributeToStyle(const AtomicString& value, |
| MutableStylePropertySet* style) { |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyBorderWidth, |
| ParseBorderWidthAttribute(value), |
| CSSPrimitiveValue::UnitType::kPixels); |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyBorderStyle, |
| CSSValueSolid); |
| } |
| |
| void HTMLElement::MapLanguageAttributeToLocale(const AtomicString& value, |
| MutableStylePropertySet* style) { |
| if (!value.IsEmpty()) { |
| // Have to quote so the locale id is treated as a string instead of as a CSS |
| // keyword. |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLocale, |
| SerializeString(value)); |
| |
| // FIXME: Remove the following UseCounter code when we collect enough |
| // data. |
| UseCounter::Count(GetDocument(), UseCounter::kLangAttribute); |
| if (isHTMLHtmlElement(*this)) |
| UseCounter::Count(GetDocument(), UseCounter::kLangAttributeOnHTML); |
| else if (isHTMLBodyElement(*this)) |
| UseCounter::Count(GetDocument(), UseCounter::kLangAttributeOnBody); |
| String html_language = value.GetString(); |
| size_t first_separator = html_language.find('-'); |
| if (first_separator != kNotFound) |
| html_language = html_language.Left(first_separator); |
| String ui_language = DefaultLanguage(); |
| first_separator = ui_language.find('-'); |
| if (first_separator != kNotFound) |
| ui_language = ui_language.Left(first_separator); |
| first_separator = ui_language.find('_'); |
| if (first_separator != kNotFound) |
| ui_language = ui_language.Left(first_separator); |
| if (!DeprecatedEqualIgnoringCase(html_language, ui_language)) |
| UseCounter::Count(GetDocument(), |
| UseCounter::kLangAttributeDoesNotMatchToUILocale); |
| } else { |
| // The empty string means the language is explicitly unknown. |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLocale, |
| CSSValueAuto); |
| } |
| } |
| |
| bool HTMLElement::IsPresentationAttribute(const QualifiedName& name) const { |
| if (name == alignAttr || name == contenteditableAttr || name == hiddenAttr || |
| name == langAttr || name.Matches(XMLNames::langAttr) || |
| name == draggableAttr || name == dirAttr) |
| return true; |
| return Element::IsPresentationAttribute(name); |
| } |
| |
| static inline bool IsValidDirAttribute(const AtomicString& value) { |
| return DeprecatedEqualIgnoringCase(value, "auto") || |
| DeprecatedEqualIgnoringCase(value, "ltr") || |
| DeprecatedEqualIgnoringCase(value, "rtl"); |
| } |
| |
| void HTMLElement::CollectStyleForPresentationAttribute( |
| const QualifiedName& name, |
| const AtomicString& value, |
| MutableStylePropertySet* style) { |
| if (name == alignAttr) { |
| if (DeprecatedEqualIgnoringCase(value, "middle")) |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyTextAlign, |
| CSSValueCenter); |
| else |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyTextAlign, |
| value); |
| } else if (name == contenteditableAttr) { |
| if (value.IsEmpty() || DeprecatedEqualIgnoringCase(value, "true")) { |
| AddPropertyToPresentationAttributeStyle( |
| style, CSSPropertyWebkitUserModify, CSSValueReadWrite); |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWordWrap, |
| CSSValueBreakWord); |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLineBreak, |
| CSSValueAfterWhiteSpace); |
| UseCounter::Count(GetDocument(), UseCounter::kContentEditableTrue); |
| if (HasTagName(htmlTag)) |
| UseCounter::Count(GetDocument(), |
| UseCounter::kContentEditableTrueOnHTML); |
| } else if (DeprecatedEqualIgnoringCase(value, "plaintext-only")) { |
| AddPropertyToPresentationAttributeStyle( |
| style, CSSPropertyWebkitUserModify, CSSValueReadWritePlaintextOnly); |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWordWrap, |
| CSSValueBreakWord); |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLineBreak, |
| CSSValueAfterWhiteSpace); |
| UseCounter::Count(GetDocument(), |
| UseCounter::kContentEditablePlainTextOnly); |
| } else if (DeprecatedEqualIgnoringCase(value, "false")) { |
| AddPropertyToPresentationAttributeStyle( |
| style, CSSPropertyWebkitUserModify, CSSValueReadOnly); |
| } |
| } else if (name == hiddenAttr) { |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyDisplay, |
| CSSValueNone); |
| } else if (name == draggableAttr) { |
| UseCounter::Count(GetDocument(), UseCounter::kDraggableAttribute); |
| if (DeprecatedEqualIgnoringCase(value, "true")) { |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserDrag, |
| CSSValueElement); |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyUserSelect, |
| CSSValueNone); |
| } else if (DeprecatedEqualIgnoringCase(value, "false")) { |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserDrag, |
| CSSValueNone); |
| } |
| } else if (name == dirAttr) { |
| if (DeprecatedEqualIgnoringCase(value, "auto")) { |
| AddPropertyToPresentationAttributeStyle( |
| style, CSSPropertyUnicodeBidi, UnicodeBidiAttributeForDirAuto(this)); |
| } else { |
| if (IsValidDirAttribute(value)) |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyDirection, |
| value); |
| else if (isHTMLBodyElement(*this)) |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyDirection, |
| "ltr"); |
| if (!HasTagName(bdiTag) && !HasTagName(bdoTag) && !HasTagName(outputTag)) |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyUnicodeBidi, |
| CSSValueIsolate); |
| } |
| } else if (name.Matches(XMLNames::langAttr)) { |
| MapLanguageAttributeToLocale(value, style); |
| } else if (name == langAttr) { |
| // xml:lang has a higher priority than lang. |
| if (!FastHasAttribute(XMLNames::langAttr)) |
| MapLanguageAttributeToLocale(value, style); |
| } else { |
| Element::CollectStyleForPresentationAttribute(name, value, style); |
| } |
| } |
| |
| const AtomicString& HTMLElement::EventNameForAttributeName( |
| const QualifiedName& attr_name) { |
| if (!attr_name.NamespaceURI().IsNull()) |
| return g_null_atom; |
| |
| if (!attr_name.LocalName().StartsWith("on", kTextCaseASCIIInsensitive)) |
| return g_null_atom; |
| |
| typedef HashMap<AtomicString, AtomicString> StringToStringMap; |
| DEFINE_STATIC_LOCAL(StringToStringMap, attribute_name_to_event_name_map, ()); |
| if (!attribute_name_to_event_name_map.size()) { |
| struct AttrToEventName { |
| const QualifiedName& attr; |
| const AtomicString& event; |
| }; |
| AttrToEventName attr_to_event_names[] = { |
| {onabortAttr, EventTypeNames::abort}, |
| {onanimationendAttr, EventTypeNames::animationend}, |
| {onanimationiterationAttr, EventTypeNames::animationiteration}, |
| {onanimationstartAttr, EventTypeNames::animationstart}, |
| {onauxclickAttr, EventTypeNames::auxclick}, |
| {onbeforecopyAttr, EventTypeNames::beforecopy}, |
| {onbeforecutAttr, EventTypeNames::beforecut}, |
| {onbeforepasteAttr, EventTypeNames::beforepaste}, |
| {onblurAttr, EventTypeNames::blur}, |
| {oncancelAttr, EventTypeNames::cancel}, |
| {oncanplayAttr, EventTypeNames::canplay}, |
| {oncanplaythroughAttr, EventTypeNames::canplaythrough}, |
| {onchangeAttr, EventTypeNames::change}, |
| {onclickAttr, EventTypeNames::click}, |
| {oncloseAttr, EventTypeNames::close}, |
| {oncontextmenuAttr, EventTypeNames::contextmenu}, |
| {oncopyAttr, EventTypeNames::copy}, |
| {oncuechangeAttr, EventTypeNames::cuechange}, |
| {oncutAttr, EventTypeNames::cut}, |
| {ondblclickAttr, EventTypeNames::dblclick}, |
| {ondragAttr, EventTypeNames::drag}, |
| {ondragendAttr, EventTypeNames::dragend}, |
| {ondragenterAttr, EventTypeNames::dragenter}, |
| {ondragleaveAttr, EventTypeNames::dragleave}, |
| {ondragoverAttr, EventTypeNames::dragover}, |
| {ondragstartAttr, EventTypeNames::dragstart}, |
| {ondropAttr, EventTypeNames::drop}, |
| {ondurationchangeAttr, EventTypeNames::durationchange}, |
| {onemptiedAttr, EventTypeNames::emptied}, |
| {onendedAttr, EventTypeNames::ended}, |
| {onerrorAttr, EventTypeNames::error}, |
| {onfocusAttr, EventTypeNames::focus}, |
| {onfocusinAttr, EventTypeNames::focusin}, |
| {onfocusoutAttr, EventTypeNames::focusout}, |
| {ongotpointercaptureAttr, EventTypeNames::gotpointercapture}, |
| {oninputAttr, EventTypeNames::input}, |
| {oninvalidAttr, EventTypeNames::invalid}, |
| {onkeydownAttr, EventTypeNames::keydown}, |
| {onkeypressAttr, EventTypeNames::keypress}, |
| {onkeyupAttr, EventTypeNames::keyup}, |
| {onloadAttr, EventTypeNames::load}, |
| {onloadeddataAttr, EventTypeNames::loadeddata}, |
| {onloadedmetadataAttr, EventTypeNames::loadedmetadata}, |
| {onloadstartAttr, EventTypeNames::loadstart}, |
| {onlostpointercaptureAttr, EventTypeNames::lostpointercapture}, |
| {onmousedownAttr, EventTypeNames::mousedown}, |
| {onmouseenterAttr, EventTypeNames::mouseenter}, |
| {onmouseleaveAttr, EventTypeNames::mouseleave}, |
| {onmousemoveAttr, EventTypeNames::mousemove}, |
| {onmouseoutAttr, EventTypeNames::mouseout}, |
| {onmouseoverAttr, EventTypeNames::mouseover}, |
| {onmouseupAttr, EventTypeNames::mouseup}, |
| {onmousewheelAttr, EventTypeNames::mousewheel}, |
| {onpasteAttr, EventTypeNames::paste}, |
| {onpauseAttr, EventTypeNames::pause}, |
| {onplayAttr, EventTypeNames::play}, |
| {onplayingAttr, EventTypeNames::playing}, |
| {onpointercancelAttr, EventTypeNames::pointercancel}, |
| {onpointerdownAttr, EventTypeNames::pointerdown}, |
| {onpointerenterAttr, EventTypeNames::pointerenter}, |
| {onpointerleaveAttr, EventTypeNames::pointerleave}, |
| {onpointermoveAttr, EventTypeNames::pointermove}, |
| {onpointeroutAttr, EventTypeNames::pointerout}, |
| {onpointeroverAttr, EventTypeNames::pointerover}, |
| {onpointerupAttr, EventTypeNames::pointerup}, |
| {onprogressAttr, EventTypeNames::progress}, |
| {onratechangeAttr, EventTypeNames::ratechange}, |
| {onresetAttr, EventTypeNames::reset}, |
| {onresizeAttr, EventTypeNames::resize}, |
| {onscrollAttr, EventTypeNames::scroll}, |
| {onseekedAttr, EventTypeNames::seeked}, |
| {onseekingAttr, EventTypeNames::seeking}, |
| {onselectAttr, EventTypeNames::select}, |
| {onselectstartAttr, EventTypeNames::selectstart}, |
| {onshowAttr, EventTypeNames::show}, |
| {onstalledAttr, EventTypeNames::stalled}, |
| {onsubmitAttr, EventTypeNames::submit}, |
| {onsuspendAttr, EventTypeNames::suspend}, |
| {ontimeupdateAttr, EventTypeNames::timeupdate}, |
| {ontoggleAttr, EventTypeNames::toggle}, |
| {ontouchcancelAttr, EventTypeNames::touchcancel}, |
| {ontouchendAttr, EventTypeNames::touchend}, |
| {ontouchmoveAttr, EventTypeNames::touchmove}, |
| {ontouchstartAttr, EventTypeNames::touchstart}, |
| {ontransitionendAttr, EventTypeNames::webkitTransitionEnd}, |
| {onvolumechangeAttr, EventTypeNames::volumechange}, |
| {onwaitingAttr, EventTypeNames::waiting}, |
| {onwebkitanimationendAttr, EventTypeNames::webkitAnimationEnd}, |
| {onwebkitanimationiterationAttr, |
| EventTypeNames::webkitAnimationIteration}, |
| {onwebkitanimationstartAttr, EventTypeNames::webkitAnimationStart}, |
| {onwebkitfullscreenchangeAttr, EventTypeNames::webkitfullscreenchange}, |
| {onwebkitfullscreenerrorAttr, EventTypeNames::webkitfullscreenerror}, |
| {onwebkittransitionendAttr, EventTypeNames::webkitTransitionEnd}, |
| {onwheelAttr, EventTypeNames::wheel}, |
| }; |
| |
| for (const auto& name : attr_to_event_names) |
| attribute_name_to_event_name_map.Set(name.attr.LocalName(), name.event); |
| } |
| |
| return attribute_name_to_event_name_map.at(attr_name.LocalName()); |
| } |
| |
| void HTMLElement::AttributeChanged(const AttributeModificationParams& params) { |
| Element::AttributeChanged(params); |
| if (params.reason != AttributeModificationReason::kDirectly) |
| return; |
| // adjustedFocusedElementInTreeScope() is not trivial. We should check |
| // attribute names, then call adjustedFocusedElementInTreeScope(). |
| if (params.name == hiddenAttr && !params.new_value.IsNull()) { |
| if (AdjustedFocusedElementInTreeScope() == this) |
| blur(); |
| } else if (params.name == contenteditableAttr) { |
| 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(); |
| } |
| } |
| |
| void HTMLElement::ParseAttribute(const AttributeModificationParams& params) { |
| if (params.name == tabindexAttr || params.name == XMLNames::langAttr) |
| return Element::ParseAttribute(params); |
| |
| if (params.name == dirAttr) { |
| DirAttributeChanged(params.new_value); |
| } else if (params.name == langAttr) { |
| PseudoStateChanged(CSSSelector::kPseudoLang); |
| } else if (params.name == inertAttr) { |
| UseCounter::Count(GetDocument(), UseCounter::kInertAttribute); |
| } else { |
| const AtomicString& event_name = EventNameForAttributeName(params.name); |
| if (!event_name.IsNull()) { |
| SetAttributeEventListener( |
| event_name, |
| CreateAttributeEventListener(this, params.name, params.new_value, |
| EventParameterName())); |
| } |
| } |
| } |
| |
| 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; |
| } |
| |
| fragment->AppendChild( |
| Text::Create(GetDocument(), text.Substring(start, i - start)), |
| exception_state); |
| if (exception_state.HadException()) |
| return nullptr; |
| |
| if (c == '\r' || c == '\n') { |
| fragment->AppendChild(HTMLBRElement::Create(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; |
| } |
| |
| void HTMLElement::setInnerText(const String& text, |
| ExceptionState& exception_state) { |
| // FIXME: This doesn't take whitespace collapsing into account at all. |
| |
| if (!text.Contains('\n') && !text.Contains('\r')) { |
| if (text.IsEmpty()) { |
| RemoveChildren(); |
| return; |
| } |
| ReplaceChildrenWithText(this, text, exception_state); |
| return; |
| } |
| |
| // FIXME: Do we need to be able to detect preserveNewline style even when |
| // there's no layoutObject? |
| // FIXME: Can the layoutObject be out of date here? Do we need to call |
| // updateStyleIfNeeded? For example, for the contents of textarea elements |
| // that are display:none? |
| LayoutObject* r = GetLayoutObject(); |
| if (r && r->Style()->PreserveNewline()) { |
| if (!text.Contains('\r')) { |
| ReplaceChildrenWithText(this, text, exception_state); |
| return; |
| } |
| String text_with_consistent_line_breaks = text; |
| text_with_consistent_line_breaks.Replace("\r\n", "\n"); |
| text_with_consistent_line_breaks.Replace('\r', '\n'); |
| ReplaceChildrenWithText(this, text_with_consistent_line_breaks, |
| exception_state); |
| return; |
| } |
| |
| // Add text nodes and <br> elements. |
| DocumentFragment* fragment = TextToFragment(text, exception_state); |
| if (!exception_state.HadException()) |
| ReplaceChildrenWithFragment(this, fragment, exception_state); |
| } |
| |
| void HTMLElement::setOuterText(const String& text, |
| ExceptionState& exception_state) { |
| ContainerNode* parent = parentNode(); |
| if (!parent) { |
| exception_state.ThrowDOMException(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); |
| |
| // textToFragment might cause mutation events. |
| if (!parentNode()) |
| exception_state.ThrowDOMException(kHierarchyRequestError, |
| "The element has no parent."); |
| |
| if (exception_state.HadException()) |
| return; |
| |
| parent->ReplaceChild(new_child, this, exception_state); |
| |
| Node* node = next ? next->previousSibling() : nullptr; |
| if (!exception_state.HadException() && node && node->IsTextNode()) |
| MergeWithNextTextNode(ToText(node), exception_state); |
| |
| if (!exception_state.HadException() && prev && prev->IsTextNode()) |
| MergeWithNextTextNode(ToText(prev), exception_state); |
| } |
| |
| void HTMLElement::ApplyAlignmentAttributeToStyle( |
| const AtomicString& alignment, |
| MutableStylePropertySet* style) { |
| // Vertical alignment with respect to the current baseline of the text |
| // right or left means floating images. |
| CSSValueID float_value = CSSValueInvalid; |
| CSSValueID vertical_align_value = CSSValueInvalid; |
| |
| if (DeprecatedEqualIgnoringCase(alignment, "absmiddle")) { |
| vertical_align_value = CSSValueMiddle; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "absbottom")) { |
| vertical_align_value = CSSValueBottom; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "left")) { |
| float_value = CSSValueLeft; |
| vertical_align_value = CSSValueTop; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "right")) { |
| float_value = CSSValueRight; |
| vertical_align_value = CSSValueTop; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "top")) { |
| vertical_align_value = CSSValueTop; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "middle")) { |
| vertical_align_value = CSSValueWebkitBaselineMiddle; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "center")) { |
| vertical_align_value = CSSValueMiddle; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "bottom")) { |
| vertical_align_value = CSSValueBaseline; |
| } else if (DeprecatedEqualIgnoringCase(alignment, "texttop")) { |
| vertical_align_value = CSSValueTextTop; |
| } |
| |
| if (float_value != CSSValueInvalid) |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyFloat, |
| float_value); |
| |
| if (vertical_align_value != CSSValueInvalid) |
| AddPropertyToPresentationAttributeStyle(style, CSSPropertyVerticalAlign, |
| vertical_align_value); |
| } |
| |
| bool HTMLElement::HasCustomFocusLogic() const { |
| return false; |
| } |
| |
| String HTMLElement::contentEditable() const { |
| const AtomicString& value = FastGetAttribute(contenteditableAttr); |
| |
| if (value.IsNull()) |
| return "inherit"; |
| if (value.IsEmpty() || DeprecatedEqualIgnoringCase(value, "true")) |
| return "true"; |
| if (DeprecatedEqualIgnoringCase(value, "false")) |
| return "false"; |
| if (DeprecatedEqualIgnoringCase(value, "plaintext-only")) |
| return "plaintext-only"; |
| |
| return "inherit"; |
| } |
| |
| void HTMLElement::setContentEditable(const String& enabled, |
| ExceptionState& exception_state) { |
| if (DeprecatedEqualIgnoringCase(enabled, "true")) |
| setAttribute(contenteditableAttr, "true"); |
| else if (DeprecatedEqualIgnoringCase(enabled, "false")) |
| setAttribute(contenteditableAttr, "false"); |
| else if (DeprecatedEqualIgnoringCase(enabled, "plaintext-only")) |
| setAttribute(contenteditableAttr, "plaintext-only"); |
| else if (DeprecatedEqualIgnoringCase(enabled, "inherit")) |
| removeAttribute(contenteditableAttr); |
| else |
| exception_state.ThrowDOMException(kSyntaxError, |
| "The value provided ('" + enabled + |
| "') is not one of 'true', 'false', " |
| "'plaintext-only', or 'inherit'."); |
| } |
| |
| bool HTMLElement::isContentEditableForBinding() const { |
| return IsEditingHost(*this) || IsEditable(*this); |
| } |
| |
| bool HTMLElement::draggable() const { |
| return DeprecatedEqualIgnoringCase(getAttribute(draggableAttr), "true"); |
| } |
| |
| void HTMLElement::setDraggable(bool value) { |
| setAttribute(draggableAttr, value ? "true" : "false"); |
| } |
| |
| bool HTMLElement::spellcheck() const { |
| return IsSpellCheckingEnabled(); |
| } |
| |
| void HTMLElement::setSpellcheck(bool enable) { |
| setAttribute(spellcheckAttr, enable ? "true" : "false"); |
| } |
| |
| void HTMLElement::click() { |
| DispatchSimulatedClick(0, kSendNoEvents, |
| SimulatedClickCreationScope::kFromScript); |
| } |
| |
| void HTMLElement::AccessKeyAction(bool send_mouse_events) { |
| DispatchSimulatedClick( |
| 0, send_mouse_events ? kSendMouseUpDownEvents : kSendNoEvents); |
| } |
| |
| String HTMLElement::title() const { |
| return FastGetAttribute(titleAttr); |
| } |
| |
| int HTMLElement::tabIndex() const { |
| if (SupportsFocus()) |
| return Element::tabIndex(); |
| return -1; |
| } |
| |
| TranslateAttributeMode HTMLElement::GetTranslateAttributeMode() const { |
| const AtomicString& value = getAttribute(translateAttr); |
| |
| if (value == g_null_atom) |
| return kTranslateAttributeInherit; |
| if (DeprecatedEqualIgnoringCase(value, "yes") || |
| DeprecatedEqualIgnoringCase(value, "")) |
| return kTranslateAttributeYes; |
| if (DeprecatedEqualIgnoringCase(value, "no")) |
| return kTranslateAttributeNo; |
| |
| return kTranslateAttributeInherit; |
| } |
| |
| bool HTMLElement::translate() const { |
| for (const HTMLElement* element = this; element; |
| element = Traversal<HTMLElement>::FirstAncestor(*element)) { |
| TranslateAttributeMode mode = element->GetTranslateAttributeMode(); |
| if (mode != kTranslateAttributeInherit) { |
| DCHECK(mode == kTranslateAttributeYes || mode == kTranslateAttributeNo); |
| return mode == kTranslateAttributeYes; |
| } |
| } |
| |
| // Default on the root element is translate=yes. |
| return true; |
| } |
| |
| void HTMLElement::setTranslate(bool enable) { |
| setAttribute(translateAttr, enable ? "yes" : "no"); |
| } |
| |
| // Returns the conforming 'dir' value associated with the state the attribute is |
| // in (in its canonical case), if any, or the empty string if the attribute is |
| // in a state that has no associated keyword value or if the attribute is not in |
| // a defined state (e.g. the attribute is missing and there is no missing value |
| // default). |
| // http://www.whatwg.org/specs/web-apps/current-work/multipage/common-dom-interfaces.html#limited-to-only-known-values |
| static inline const AtomicString& ToValidDirValue(const AtomicString& value) { |
| DEFINE_STATIC_LOCAL(const AtomicString, ltr_value, ("ltr")); |
| DEFINE_STATIC_LOCAL(const AtomicString, rtl_value, ("rtl")); |
| DEFINE_STATIC_LOCAL(const AtomicString, auto_value, ("auto")); |
| |
| if (DeprecatedEqualIgnoringCase(value, ltr_value)) |
| return ltr_value; |
| if (DeprecatedEqualIgnoringCase(value, rtl_value)) |
| return rtl_value; |
| if (DeprecatedEqualIgnoringCase(value, auto_value)) |
| return auto_value; |
| return g_null_atom; |
| } |
| |
| const AtomicString& HTMLElement::dir() { |
| return ToValidDirValue(FastGetAttribute(dirAttr)); |
| } |
| |
| void HTMLElement::setDir(const AtomicString& value) { |
| setAttribute(dirAttr, value); |
| } |
| |
| HTMLFormElement* HTMLElement::FindFormAncestor() const { |
| return Traversal<HTMLFormElement>::FirstAncestor(*this); |
| } |
| |
| static inline bool ElementAffectsDirectionality(const Node* node) { |
| return node->IsHTMLElement() && (isHTMLBDIElement(ToHTMLElement(*node)) || |
| ToHTMLElement(*node).hasAttribute(dirAttr)); |
| } |
| |
| void HTMLElement::ChildrenChanged(const ChildrenChange& change) { |
| Element::ChildrenChanged(change); |
| AdjustDirectionalityIfNeededAfterChildrenChanged(change); |
| } |
| |
| bool HTMLElement::HasDirectionAuto() const { |
| // <bdi> defaults to dir="auto" |
| // https://html.spec.whatwg.org/multipage/semantics.html#the-bdi-element |
| const AtomicString& direction = FastGetAttribute(dirAttr); |
| return (isHTMLBDIElement(*this) && direction == g_null_atom) || |
| DeprecatedEqualIgnoringCase(direction, "auto"); |
| } |
| |
| TextDirection HTMLElement::DirectionalityIfhasDirAutoAttribute( |
| bool& is_auto) const { |
| is_auto = HasDirectionAuto(); |
| if (!is_auto) |
| return TextDirection::kLtr; |
| return Directionality(); |
| } |
| |
| TextDirection HTMLElement::Directionality( |
| Node** strong_directionality_text_node) const { |
| if (isHTMLInputElement(*this)) { |
| HTMLInputElement* input_element = |
| toHTMLInputElement(const_cast<HTMLElement*>(this)); |
| bool has_strong_directionality; |
| TextDirection text_direction = DetermineDirectionality( |
| input_element->value(), &has_strong_directionality); |
| if (strong_directionality_text_node) |
| *strong_directionality_text_node = |
| has_strong_directionality ? input_element : 0; |
| return text_direction; |
| } |
| |
| Node* node = FlatTreeTraversal::FirstChild(*this); |
| while (node) { |
| // Skip bdi, script, style and text form controls. |
| if (DeprecatedEqualIgnoringCase(node->nodeName(), "bdi") || |
| isHTMLScriptElement(*node) || isHTMLStyleElement(*node) || |
| (node->IsElementNode() && ToElement(node)->IsTextControl()) || |
| (node->IsElementNode() && |
| ToElement(node)->ShadowPseudoId() == "-webkit-input-placeholder")) { |
| node = FlatTreeTraversal::NextSkippingChildren(*node, this); |
| continue; |
| } |
| |
| // Skip elements with valid dir attribute |
| if (node->IsElementNode()) { |
| AtomicString dir_attribute_value = |
| ToElement(node)->FastGetAttribute(dirAttr); |
| if (IsValidDirAttribute(dir_attribute_value)) { |
| node = FlatTreeTraversal::NextSkippingChildren(*node, this); |
| continue; |
| } |
| } |
| |
| if (node->IsTextNode()) { |
| bool has_strong_directionality; |
| TextDirection text_direction = DetermineDirectionality( |
| node->textContent(true), &has_strong_directionality); |
| if (has_strong_directionality) { |
| if (strong_directionality_text_node) |
| *strong_directionality_text_node = node; |
| return text_direction; |
| } |
| } |
| node = FlatTreeTraversal::Next(*node, this); |
| } |
| if (strong_directionality_text_node) |
| *strong_directionality_text_node = 0; |
| return TextDirection::kLtr; |
| } |
| |
| bool HTMLElement::SelfOrAncestorHasDirAutoAttribute() const { |
| // TODO(esprehn): Storing this state in the computed style is bad, we |
| // should be able to answer questions about the shape of the DOM and the |
| // text contained inside it without having style. |
| if (const ComputedStyle* style = GetComputedStyle()) |
| return style->SelfOrAncestorHasDirAutoAttribute(); |
| return false; |
| } |
| |
| void HTMLElement::DirAttributeChanged(const AtomicString& value) { |
| // If an ancestor has dir=auto, and this node has the first character, |
| // changes to dir attribute may affect the ancestor. |
| if (!CanParticipateInFlatTree()) |
| return; |
| UpdateDistribution(); |
| Element* parent = FlatTreeTraversal::ParentElement(*this); |
| if (parent && parent->IsHTMLElement() && |
| ToHTMLElement(parent)->SelfOrAncestorHasDirAutoAttribute()) |
| ToHTMLElement(parent) |
| ->AdjustDirectionalityIfNeededAfterChildAttributeChanged(this); |
| |
| if (DeprecatedEqualIgnoringCase(value, "auto")) |
| CalculateAndAdjustDirectionality(); |
| } |
| |
| void HTMLElement::AdjustDirectionalityIfNeededAfterChildAttributeChanged( |
| Element* child) { |
| DCHECK(SelfOrAncestorHasDirAutoAttribute()); |
| const ComputedStyle* style = GetComputedStyle(); |
| if (style && style->Direction() != Directionality()) { |
| for (Element* element_to_adjust = this; element_to_adjust; |
| element_to_adjust = |
| FlatTreeTraversal::ParentElement(*element_to_adjust)) { |
| if (ElementAffectsDirectionality(element_to_adjust)) { |
| element_to_adjust->SetNeedsStyleRecalc( |
| kLocalStyleChange, StyleChangeReasonForTracing::Create( |
| StyleChangeReason::kWritingModeChange)); |
| return; |
| } |
| } |
| } |
| } |
| |
| void HTMLElement::CalculateAndAdjustDirectionality() { |
| TextDirection text_direction = Directionality(); |
| const ComputedStyle* style = GetComputedStyle(); |
| if (style && style->Direction() != text_direction) |
| SetNeedsStyleRecalc(kLocalStyleChange, |
| StyleChangeReasonForTracing::Create( |
| StyleChangeReason::kWritingModeChange)); |
| } |
| |
| void HTMLElement::AdjustDirectionalityIfNeededAfterChildrenChanged( |
| const ChildrenChange& change) { |
| if (!SelfOrAncestorHasDirAutoAttribute()) |
| return; |
| |
| UpdateDistribution(); |
| |
| for (Element* element_to_adjust = this; element_to_adjust; |
| element_to_adjust = |
| FlatTreeTraversal::ParentElement(*element_to_adjust)) { |
| if (ElementAffectsDirectionality(element_to_adjust)) { |
| ToHTMLElement(element_to_adjust)->CalculateAndAdjustDirectionality(); |
| return; |
| } |
| } |
| } |
| |
| Node::InsertionNotificationRequest HTMLElement::InsertedInto( |
| ContainerNode* insertion_point) { |
| // Process the superclass first to ensure that `InActiveDocument()` is |
| // updated. |
| Element::InsertedInto(insertion_point); |
| |
| if (hasAttribute(nonceAttr) && getAttribute(nonceAttr) != g_empty_atom) { |
| setNonce(getAttribute(nonceAttr)); |
| if (RuntimeEnabledFeatures::hideNonceContentAttributeEnabled() && |
| InActiveDocument() && |
| GetDocument().GetContentSecurityPolicy()->HasHeaderDeliveredPolicy()) { |
| setAttribute(nonceAttr, g_empty_atom); |
| } |
| } |
| |
| return kInsertionDone; |
| } |
| |
| void HTMLElement::AddHTMLLengthToStyle(MutableStylePropertySet* style, |
| CSSPropertyID property_id, |
| const String& value, |
| AllowPercentage allow_percentage) { |
| HTMLDimension dimension; |
| if (!ParseDimensionValue(value, dimension)) |
| return; |
| if (property_id == CSSPropertyWidth && |
| (dimension.IsPercentage() || dimension.IsRelative())) { |
| UseCounter::Count(GetDocument(), UseCounter::kHTMLElementDeprecatedWidth); |
| } |
| if (dimension.IsRelative()) |
| return; |
| if (dimension.IsPercentage() && allow_percentage != kAllowPercentageValues) |
| return; |
| CSSPrimitiveValue::UnitType unit = |
| dimension.IsPercentage() ? CSSPrimitiveValue::UnitType::kPercentage |
| : CSSPrimitiveValue::UnitType::kPixels; |
| AddPropertyToPresentationAttributeStyle(style, property_id, dimension.Value(), |
| unit); |
| } |
| |
| static RGBA32 ParseColorStringWithCrazyLegacyRules(const String& color_string) { |
| // Per spec, only look at the first 128 digits of the string. |
| const size_t kMaxColorLength = 128; |
| // We'll pad the buffer with two extra 0s later, so reserve two more than the |
| // max. |
| Vector<char, kMaxColorLength + 2> digit_buffer; |
| |
| size_t i = 0; |
| // Skip a leading #. |
| if (color_string[0] == '#') |
| i = 1; |
| |
| // Grab the first 128 characters, replacing non-hex characters with 0. |
| // Non-BMP characters are replaced with "00" due to them appearing as two |
| // "characters" in the String. |
| for (; i < color_string.length() && digit_buffer.size() < kMaxColorLength; |
| i++) { |
| if (!IsASCIIHexDigit(color_string[i])) |
| digit_buffer.push_back('0'); |
| else |
| digit_buffer.push_back(color_string[i]); |
| } |
| |
| if (!digit_buffer.size()) |
| return Color::kBlack; |
| |
| // Pad the buffer out to at least the next multiple of three in size. |
| digit_buffer.push_back('0'); |
| digit_buffer.push_back('0'); |
| |
| if (digit_buffer.size() < 6) |
| return MakeRGB(ToASCIIHexValue(digit_buffer[0]), |
| ToASCIIHexValue(digit_buffer[1]), |
| ToASCIIHexValue(digit_buffer[2])); |
| |
| // Split the digits into three components, then search the last 8 digits of |
| // each component. |
| DCHECK_GE(digit_buffer.size(), 6u); |
| size_t component_length = digit_buffer.size() / 3; |
| size_t component_search_window_length = min<size_t>(component_length, 8); |
| size_t red_index = component_length - component_search_window_length; |
| size_t green_index = component_length * 2 - component_search_window_length; |
| size_t blue_index = component_length * 3 - component_search_window_length; |
| // Skip digits until one of them is non-zero, or we've only got two digits |
| // left in the component. |
| while (digit_buffer[red_index] == '0' && digit_buffer[green_index] == '0' && |
| digit_buffer[blue_index] == '0' && |
| (component_length - red_index) > 2) { |
| red_index++; |
| green_index++; |
| blue_index++; |
| } |
| DCHECK_LT(red_index + 1, component_length); |
| DCHECK_GE(green_index, component_length); |
| DCHECK_LT(green_index + 1, component_length * 2); |
| DCHECK_GE(blue_index, component_length * 2); |
| SECURITY_DCHECK(blue_index + 1 < digit_buffer.size()); |
| |
| int red_value = |
| ToASCIIHexValue(digit_buffer[red_index], digit_buffer[red_index + 1]); |
| int green_value = |
| ToASCIIHexValue(digit_buffer[green_index], digit_buffer[green_index + 1]); |
| int blue_value = |
| ToASCIIHexValue(digit_buffer[blue_index], digit_buffer[blue_index + 1]); |
| return MakeRGB(red_value, green_value, blue_value); |
| } |
| |
| // Color parsing that matches HTML's "rules for parsing a legacy color value" |
| bool HTMLElement::ParseColorWithLegacyRules(const String& attribute_value, |
| Color& parsed_color) { |
| // An empty string doesn't apply a color. (One containing only whitespace |
| // does, which is why this check occurs before stripping.) |
| if (attribute_value.IsEmpty()) |
| return false; |
| |
| String color_string = attribute_value.StripWhiteSpace(); |
| |
| // "transparent" doesn't apply a color either. |
| if (DeprecatedEqualIgnoringCase(color_string, "transparent")) |
| return false; |
| |
| // If the string is a 3/6-digit hex color or a named CSS color, use that. |
| // Apply legacy rules otherwise. Note color.setFromString() accepts 4/8-digit |
| // hex color, so restrict its use with length checks here to support legacy |
| // HTML attributes. |
| |
| bool success = false; |
| if ((color_string.length() == 4 || color_string.length() == 7) && |
| color_string[0] == '#') |
| success = parsed_color.SetFromString(color_string); |
| if (!success) |
| success = parsed_color.SetNamedColor(color_string); |
| if (!success) { |
| parsed_color.SetRGB(ParseColorStringWithCrazyLegacyRules(color_string)); |
| success = true; |
| } |
| |
| return success; |
| } |
| |
| void HTMLElement::AddHTMLColorToStyle(MutableStylePropertySet* style, |
| CSSPropertyID property_id, |
| const String& attribute_value) { |
| Color parsed_color; |
| if (!ParseColorWithLegacyRules(attribute_value, parsed_color)) |
| return; |
| |
| style->SetProperty(property_id, *CSSColorValue::Create(parsed_color.Rgb())); |
| } |
| |
| bool HTMLElement::IsInteractiveContent() const { |
| return false; |
| } |
| |
| HTMLMenuElement* HTMLElement::AssignedContextMenu() const { |
| if (HTMLMenuElement* menu = contextMenu()) |
| return menu; |
| |
| return parentElement() && parentElement()->IsHTMLElement() |
| ? ToHTMLElement(parentElement())->AssignedContextMenu() |
| : nullptr; |
| } |
| |
| HTMLMenuElement* HTMLElement::contextMenu() const { |
| const AtomicString& context_menu_id(FastGetAttribute(contextmenuAttr)); |
| if (context_menu_id.IsNull()) |
| return nullptr; |
| |
| Element* element = GetTreeScope().getElementById(context_menu_id); |
| // Not checking if the menu element is of type "popup". |
| // Ignoring menu element type attribute is intentional according to the |
| // standard. |
| return isHTMLMenuElement(element) ? toHTMLMenuElement(element) : nullptr; |
| } |
| |
| void HTMLElement::setContextMenu(HTMLMenuElement* context_menu) { |
| if (!context_menu) { |
| setAttribute(contextmenuAttr, ""); |
| return; |
| } |
| |
| // http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#reflecting-content-attributes-in-idl-attributes |
| // On setting, if the given element has an id attribute, and has the same home |
| // subtree as the element of the attribute being set, and the given element is |
| // the first element in that home subtree whose ID is the value of that id |
| // attribute, then the content attribute must be set to the value of that id |
| // attribute. Otherwise, the content attribute must be set to the empty |
| // string. |
| const AtomicString& context_menu_id(context_menu->FastGetAttribute(idAttr)); |
| |
| if (!context_menu_id.IsNull() && |
| context_menu == GetTreeScope().getElementById(context_menu_id)) |
| setAttribute(contextmenuAttr, context_menu_id); |
| else |
| setAttribute(contextmenuAttr, ""); |
| } |
| |
| void HTMLElement::DefaultEventHandler(Event* event) { |
| if (event->type() == EventTypeNames::keypress && event->IsKeyboardEvent()) { |
| HandleKeypressEvent(ToKeyboardEvent(event)); |
| if (event->DefaultHandled()) |
| return; |
| } |
| |
| Element::DefaultEventHandler(event); |
| } |
| |
| bool HTMLElement::MatchesReadOnlyPseudoClass() const { |
| return !MatchesReadWritePseudoClass(); |
| } |
| |
| bool HTMLElement::MatchesReadWritePseudoClass() const { |
| if (FastHasAttribute(contenteditableAttr)) { |
| const AtomicString& value = FastGetAttribute(contenteditableAttr); |
| |
| if (value.IsEmpty() || DeprecatedEqualIgnoringCase(value, "true") || |
| DeprecatedEqualIgnoringCase(value, "plaintext-only")) |
| return true; |
| if (DeprecatedEqualIgnoringCase(value, "false")) |
| return false; |
| // All other values should be treated as "inherit". |
| } |
| |
| return parentElement() && HasEditableStyle(*parentElement()); |
| } |
| |
| void HTMLElement::HandleKeypressEvent(KeyboardEvent* event) { |
| if (!IsSpatialNavigationEnabled(GetDocument().GetFrame()) || !SupportsFocus()) |
| return; |
| GetDocument().UpdateStyleAndLayoutTree(); |
| // if the element is a text form control (like <input type=text> or |
| // <textarea>) or has contentEditable attribute on, we should enter a space or |
| // newline even in spatial navigation mode instead of handling it as a "click" |
| // action. |
| if (IsTextControl() || HasEditableStyle(*this)) |
| return; |
| int char_code = event->charCode(); |
| if (char_code == '\r' || char_code == ' ') { |
| DispatchSimulatedClick(event); |
| event->SetDefaultHandled(); |
| } |
| } |
| |
| const AtomicString& HTMLElement::EventParameterName() { |
| DEFINE_STATIC_LOCAL(const AtomicString, event_string, ("event")); |
| return event_string; |
| } |
| |
| int HTMLElement::offsetLeftForBinding() { |
| GetDocument().EnsurePaintLocationDataValidForNode(this); |
| Element* offset_parent = unclosedOffsetParent(); |
| if (LayoutBoxModelObject* layout_object = GetLayoutBoxModelObject()) |
| return AdjustLayoutUnitForAbsoluteZoom( |
| LayoutUnit(layout_object->PixelSnappedOffsetLeft(offset_parent)), |
| layout_object->StyleRef()) |
| .Round(); |
| return 0; |
| } |
| |
| int HTMLElement::offsetTopForBinding() { |
| GetDocument().EnsurePaintLocationDataValidForNode(this); |
| Element* offset_parent = unclosedOffsetParent(); |
| if (LayoutBoxModelObject* layout_object = GetLayoutBoxModelObject()) |
| return AdjustLayoutUnitForAbsoluteZoom( |
| LayoutUnit(layout_object->PixelSnappedOffsetTop(offset_parent)), |
| layout_object->StyleRef()) |
| .Round(); |
| return 0; |
| } |
| |
| int HTMLElement::offsetWidthForBinding() { |
| GetDocument().EnsurePaintLocationDataValidForNode(this); |
| Element* offset_parent = unclosedOffsetParent(); |
| if (LayoutBoxModelObject* layout_object = GetLayoutBoxModelObject()) |
| return AdjustLayoutUnitForAbsoluteZoom( |
| LayoutUnit( |
| layout_object->PixelSnappedOffsetWidth(offset_parent)), |
| layout_object->StyleRef()) |
| .Round(); |
| return 0; |
| } |
| |
| DISABLE_CFI_PERF |
| int HTMLElement::offsetHeightForBinding() { |
| GetDocument().EnsurePaintLocationDataValidForNode(this); |
| Element* offset_parent = unclosedOffsetParent(); |
| if (LayoutBoxModelObject* layout_object = GetLayoutBoxModelObject()) |
| return AdjustLayoutUnitForAbsoluteZoom( |
| LayoutUnit( |
| layout_object->PixelSnappedOffsetHeight(offset_parent)), |
| layout_object->StyleRef()) |
| .Round(); |
| return 0; |
| } |
| |
| Element* HTMLElement::unclosedOffsetParent() { |
| GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheetsForNode(this); |
| |
| LayoutObject* layout_object = this->GetLayoutObject(); |
| if (!layout_object) |
| return nullptr; |
| |
| return layout_object->OffsetParent(this); |
| } |
| |
| } // namespace blink |
| |
| #ifndef NDEBUG |
| |
| // For use in the debugger |
| void dumpInnerHTML(blink::HTMLElement*); |
| |
| void dumpInnerHTML(blink::HTMLElement* element) { |
| printf("%s\n", element->innerHTML().Ascii().data()); |
| } |
| #endif |
