| /* |
| * 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/XMLNames.h" |
| #include "core/css/CSSMarkup.h" |
| #include "core/css/CSSValuePool.h" |
| #include "core/css/StylePropertySet.h" |
| #include "core/dom/DocumentFragment.h" |
| #include "core/dom/ElementTraversal.h" |
| #include "core/dom/ExceptionCode.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/serializers/Serialization.h" |
| #include "core/events/EventListener.h" |
| #include "core/events/KeyboardEvent.h" |
| #include "core/frame/Settings.h" |
| #include "core/frame/UseCounter.h" |
| #include "core/html/HTMLBRElement.h" |
| #include "core/html/HTMLFormElement.h" |
| #include "core/html/HTMLInputElement.h" |
| #include "core/html/HTMLMenuElement.h" |
| #include "core/html/HTMLTemplateElement.h" |
| #include "core/html/HTMLTextFormControlElement.h" |
| #include "core/html/parser/HTMLParserIdioms.h" |
| #include "core/layout/LayoutObject.h" |
| #include "core/page/SpatialNavigation.h" |
| #include "platform/Language.h" |
| #include "platform/text/BidiResolver.h" |
| #include "platform/text/BidiTextRun.h" |
| #include "platform/text/TextRunIterator.h" |
| #include "wtf/StdLibExtras.h" |
| #include "wtf/text/CString.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| using namespace WTF; |
| |
| using namespace std; |
| |
| DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(HTMLElement); |
| |
| String HTMLElement::debugNodeName() const |
| { |
| if (document().isHTMLDocument()) { |
| return tagQName().hasPrefix() |
| ? Element::nodeName().upper() |
| : tagQName().localName().upper(); |
| } |
| return Element::nodeName(); |
| } |
| |
| String HTMLElement::nodeName() const |
| { |
| // localNameUpper may intern and cache an AtomicString. |
| ASSERT(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 (document().isHTMLDocument()) { |
| if (!tagQName().hasPrefix()) |
| return tagQName().localNameUpper(); |
| return Element::nodeName().upper(); |
| } |
| return Element::nodeName(); |
| } |
| |
| bool HTMLElement::ieForbidsInsertHTML() const |
| { |
| // FIXME: Supposedly IE disallows settting innerHTML, outerHTML |
| // and createContextualFragment on these tags. We have no tests to |
| // verify this however, so this list could be totally wrong. |
| // This list was moved from the previous endTagRequirement() implementation. |
| // This is also called from editing and assumed to be the list of tags |
| // for which no end tag should be serialized. It's unclear if the list for |
| // IE compat and the list for serialization sanity are the same. |
| if (hasTagName(areaTag) |
| || hasTagName(baseTag) |
| || hasTagName(basefontTag) |
| || hasTagName(brTag) |
| || hasTagName(colTag) |
| || hasTagName(embedTag) |
| || hasTagName(frameTag) |
| || hasTagName(hrTag) |
| || hasTagName(imageTag) |
| || hasTagName(imgTag) |
| || hasTagName(inputTag) |
| || hasTagName(keygenTag) |
| || hasTagName(linkTag) |
| || (RuntimeEnabledFeatures::contextMenuEnabled() && hasTagName(menuitemTag)) |
| || hasTagName(metaTag) |
| || hasTagName(paramTag) |
| || hasTagName(sourceTag) |
| || hasTagName(trackTag) |
| || hasTagName(wbrTag)) |
| return true; |
| return false; |
| } |
| |
| 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 borderWidth = 0; |
| if (value.isEmpty() || !parseHTMLNonNegativeInteger(value, borderWidth)) { |
| if (hasTagName(tableTag) && !value.isNull()) |
| return 1; |
| } |
| return borderWidth; |
| } |
| |
| void HTMLElement::applyBorderAttributeToStyle(const AtomicString& value, MutableStylePropertySet* style) |
| { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyBorderWidth, parseBorderWidthAttribute(value), CSSPrimitiveValue::UnitType::Pixels); |
| 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(document(), UseCounter::LangAttribute); |
| if (isHTMLHtmlElement(*this)) |
| UseCounter::count(document(), UseCounter::LangAttributeOnHTML); |
| else if (isHTMLBodyElement(*this)) |
| UseCounter::count(document(), UseCounter::LangAttributeOnBody); |
| String htmlLanguage = value.getString(); |
| size_t firstSeparator = htmlLanguage.find('-'); |
| if (firstSeparator != kNotFound) |
| htmlLanguage = htmlLanguage.left(firstSeparator); |
| String uiLanguage = defaultLanguage(); |
| firstSeparator = uiLanguage.find('-'); |
| if (firstSeparator != kNotFound) |
| uiLanguage = uiLanguage.left(firstSeparator); |
| firstSeparator = uiLanguage.find('_'); |
| if (firstSeparator != kNotFound) |
| uiLanguage = uiLanguage.left(firstSeparator); |
| if (!equalIgnoringCase(htmlLanguage, uiLanguage)) |
| UseCounter::count(document(), UseCounter::LangAttributeDoesNotMatchToUILocale); |
| } 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 equalIgnoringCase(value, "auto") || equalIgnoringCase(value, "ltr") || equalIgnoringCase(value, "rtl"); |
| } |
| |
| void HTMLElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style) |
| { |
| if (name == alignAttr) { |
| if (equalIgnoringCase(value, "middle")) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyTextAlign, CSSValueCenter); |
| else |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyTextAlign, value); |
| } else if (name == contenteditableAttr) { |
| if (value.isEmpty() || equalIgnoringCase(value, "true")) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserModify, CSSValueReadWrite); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWordWrap, CSSValueBreakWord); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace); |
| UseCounter::count(document(), UseCounter::ContentEditableTrue); |
| if (hasTagName(htmlTag)) |
| UseCounter::count(document(), UseCounter::ContentEditableTrueOnHTML); |
| } else if (equalIgnoringCase(value, "plaintext-only")) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserModify, CSSValueReadWritePlaintextOnly); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWordWrap, CSSValueBreakWord); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace); |
| UseCounter::count(document(), UseCounter::ContentEditablePlainTextOnly); |
| } else if (equalIgnoringCase(value, "false")) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserModify, CSSValueReadOnly); |
| } |
| } else if (name == hiddenAttr) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyDisplay, CSSValueNone); |
| } else if (name == draggableAttr) { |
| if (equalIgnoringCase(value, "true")) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserDrag, CSSValueElement); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserSelect, CSSValueNone); |
| } else if (equalIgnoringCase(value, "false")) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserDrag, CSSValueNone); |
| } |
| } else if (name == dirAttr) { |
| if (equalIgnoringCase(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& attrName) |
| { |
| if (!attrName.namespaceURI().isNull()) |
| return nullAtom; |
| |
| if (!attrName.localName().startsWith("on", TextCaseInsensitive)) |
| return nullAtom; |
| |
| typedef HashMap<AtomicString, AtomicString> StringToStringMap; |
| DEFINE_STATIC_LOCAL(StringToStringMap, attributeNameToEventNameMap, ()); |
| if (!attributeNameToEventNameMap.size()) { |
| struct AttrToEventName { |
| const QualifiedName& attr; |
| const AtomicString& event; |
| }; |
| AttrToEventName attrToEventNames[] = { |
| { onabortAttr, EventTypeNames::abort }, |
| { onanimationendAttr, EventTypeNames::animationend }, |
| { onanimationiterationAttr, EventTypeNames::animationiteration }, |
| { onanimationstartAttr, EventTypeNames::animationstart }, |
| { 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 }, |
| { 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 (size_t i = 0; i < WTF_ARRAY_LENGTH(attrToEventNames); i++) |
| attributeNameToEventNameMap.set(attrToEventNames[i].attr.localName(), attrToEventNames[i].event); |
| } |
| |
| return attributeNameToEventNameMap.get(attrName.localName()); |
| } |
| |
| void HTMLElement::parseAttribute(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& value) |
| { |
| if (name == tabindexAttr || name == XMLNames::langAttr) |
| return Element::parseAttribute(name, oldValue, value); |
| |
| if (name == dirAttr) { |
| dirAttributeChanged(value); |
| } else if (name == langAttr) { |
| pseudoStateChanged(CSSSelector::PseudoLang); |
| } else { |
| const AtomicString& eventName = eventNameForAttributeName(name); |
| if (!eventName.isNull()) |
| setAttributeEventListener(eventName, createAttributeEventListener(this, name, value, eventParameterName())); |
| } |
| } |
| |
| DocumentFragment* HTMLElement::textToFragment(const String& text, ExceptionState& exceptionState) |
| { |
| DocumentFragment* fragment = DocumentFragment::create(document()); |
| 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(document(), text.substring(start, i - start)), exceptionState); |
| if (exceptionState.hadException()) |
| return nullptr; |
| |
| if (c == '\r' || c == '\n') { |
| fragment->appendChild(HTMLBRElement::create(document()), exceptionState); |
| if (exceptionState.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; |
| } |
| |
| static inline bool shouldProhibitSetInnerOuterText(const HTMLElement& element) |
| { |
| return element.hasTagName(colTag) |
| || element.hasTagName(colgroupTag) |
| || element.hasTagName(framesetTag) |
| || element.hasTagName(headTag) |
| || element.hasTagName(htmlTag) |
| || element.hasTagName(tableTag) |
| || element.hasTagName(tbodyTag) |
| || element.hasTagName(tfootTag) |
| || element.hasTagName(theadTag) |
| || element.hasTagName(trTag); |
| } |
| |
| void HTMLElement::setInnerText(const String& text, ExceptionState& exceptionState) |
| { |
| if (ieForbidsInsertHTML()) { |
| exceptionState.throwDOMException(NoModificationAllowedError, "The '" + localName() + "' element does not support text insertion."); |
| return; |
| } |
| if (shouldProhibitSetInnerOuterText(*this)) { |
| exceptionState.throwDOMException(NoModificationAllowedError, "The '" + localName() + "' element does not support text insertion."); |
| return; |
| } |
| |
| // 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, exceptionState); |
| 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 = layoutObject(); |
| if (r && r->style()->preserveNewline()) { |
| if (!text.contains('\r')) { |
| replaceChildrenWithText(this, text, exceptionState); |
| return; |
| } |
| String textWithConsistentLineBreaks = text; |
| textWithConsistentLineBreaks.replace("\r\n", "\n"); |
| textWithConsistentLineBreaks.replace('\r', '\n'); |
| replaceChildrenWithText(this, textWithConsistentLineBreaks, exceptionState); |
| return; |
| } |
| |
| // Add text nodes and <br> elements. |
| DocumentFragment* fragment = textToFragment(text, exceptionState); |
| if (!exceptionState.hadException()) |
| replaceChildrenWithFragment(this, fragment, exceptionState); |
| } |
| |
| void HTMLElement::setOuterText(const String& text, ExceptionState& exceptionState) |
| { |
| if (ieForbidsInsertHTML()) { |
| exceptionState.throwDOMException(NoModificationAllowedError, "The '" + localName() + "' element does not support text insertion."); |
| return; |
| } |
| if (shouldProhibitSetInnerOuterText(*this)) { |
| exceptionState.throwDOMException(NoModificationAllowedError, "The '" + localName() + "' element does not support text insertion."); |
| return; |
| } |
| |
| ContainerNode* parent = parentNode(); |
| if (!parent) { |
| exceptionState.throwDOMException(NoModificationAllowedError, "The element has no parent."); |
| return; |
| } |
| |
| Node* prev = previousSibling(); |
| Node* next = nextSibling(); |
| Node* newChild = nullptr; |
| |
| // Convert text to fragment with <br> tags instead of linebreaks if needed. |
| if (text.contains('\r') || text.contains('\n')) |
| newChild = textToFragment(text, exceptionState); |
| else |
| newChild = Text::create(document(), text); |
| |
| // textToFragment might cause mutation events. |
| if (!parentNode()) |
| exceptionState.throwDOMException(HierarchyRequestError, "The element has no parent."); |
| |
| if (exceptionState.hadException()) |
| return; |
| |
| parent->replaceChild(newChild, this, exceptionState); |
| |
| Node* node = next ? next->previousSibling() : nullptr; |
| if (!exceptionState.hadException() && node && node->isTextNode()) |
| mergeWithNextTextNode(toText(node), exceptionState); |
| |
| if (!exceptionState.hadException() && prev && prev->isTextNode()) |
| mergeWithNextTextNode(toText(prev), exceptionState); |
| } |
| |
| 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 floatValue = CSSValueInvalid; |
| CSSValueID verticalAlignValue = CSSValueInvalid; |
| |
| if (equalIgnoringCase(alignment, "absmiddle")) { |
| verticalAlignValue = CSSValueMiddle; |
| } else if (equalIgnoringCase(alignment, "absbottom")) { |
| verticalAlignValue = CSSValueBottom; |
| } else if (equalIgnoringCase(alignment, "left")) { |
| floatValue = CSSValueLeft; |
| verticalAlignValue = CSSValueTop; |
| } else if (equalIgnoringCase(alignment, "right")) { |
| floatValue = CSSValueRight; |
| verticalAlignValue = CSSValueTop; |
| } else if (equalIgnoringCase(alignment, "top")) { |
| verticalAlignValue = CSSValueTop; |
| } else if (equalIgnoringCase(alignment, "middle")) { |
| verticalAlignValue = CSSValueWebkitBaselineMiddle; |
| } else if (equalIgnoringCase(alignment, "center")) { |
| verticalAlignValue = CSSValueMiddle; |
| } else if (equalIgnoringCase(alignment, "bottom")) { |
| verticalAlignValue = CSSValueBaseline; |
| } else if (equalIgnoringCase(alignment, "texttop")) { |
| verticalAlignValue = CSSValueTextTop; |
| } |
| |
| if (floatValue != CSSValueInvalid) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyFloat, floatValue); |
| |
| if (verticalAlignValue != CSSValueInvalid) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyVerticalAlign, verticalAlignValue); |
| } |
| |
| bool HTMLElement::hasCustomFocusLogic() const |
| { |
| return false; |
| } |
| |
| String HTMLElement::contentEditable() const |
| { |
| const AtomicString& value = fastGetAttribute(contenteditableAttr); |
| |
| if (value.isNull()) |
| return "inherit"; |
| if (value.isEmpty() || equalIgnoringCase(value, "true")) |
| return "true"; |
| if (equalIgnoringCase(value, "false")) |
| return "false"; |
| if (equalIgnoringCase(value, "plaintext-only")) |
| return "plaintext-only"; |
| |
| return "inherit"; |
| } |
| |
| void HTMLElement::setContentEditable(const String& enabled, ExceptionState& exceptionState) |
| { |
| if (equalIgnoringCase(enabled, "true")) |
| setAttribute(contenteditableAttr, "true"); |
| else if (equalIgnoringCase(enabled, "false")) |
| setAttribute(contenteditableAttr, "false"); |
| else if (equalIgnoringCase(enabled, "plaintext-only")) |
| setAttribute(contenteditableAttr, "plaintext-only"); |
| else if (equalIgnoringCase(enabled, "inherit")) |
| removeAttribute(contenteditableAttr); |
| else |
| exceptionState.throwDOMException(SyntaxError, "The value provided ('" + enabled + "') is not one of 'true', 'false', 'plaintext-only', or 'inherit'."); |
| } |
| |
| bool HTMLElement::draggable() const |
| { |
| return equalIgnoringCase(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::clickForBindings() |
| { |
| dispatchSimulatedClick(0, SendNoEvents, SimulatedClickCreationScope::FromScript); |
| } |
| |
| void HTMLElement::accessKeyAction(bool sendMouseEvents) |
| { |
| dispatchSimulatedClick(0, sendMouseEvents ? SendMouseUpDownEvents : SendNoEvents); |
| } |
| |
| String HTMLElement::title() const |
| { |
| return fastGetAttribute(titleAttr); |
| } |
| |
| short HTMLElement::tabIndex() const |
| { |
| if (supportsFocus()) |
| return Element::tabIndex(); |
| return -1; |
| } |
| |
| TranslateAttributeMode HTMLElement::translateAttributeMode() const |
| { |
| const AtomicString& value = getAttribute(translateAttr); |
| |
| if (value == nullAtom) |
| return TranslateAttributeInherit; |
| if (equalIgnoringCase(value, "yes") || equalIgnoringCase(value, "")) |
| return TranslateAttributeYes; |
| if (equalIgnoringCase(value, "no")) |
| return TranslateAttributeNo; |
| |
| return TranslateAttributeInherit; |
| } |
| |
| bool HTMLElement::translate() const |
| { |
| for (const HTMLElement* element = this; element; element = Traversal<HTMLElement>::firstAncestor(*element)) { |
| TranslateAttributeMode mode = element->translateAttributeMode(); |
| if (mode != TranslateAttributeInherit) { |
| ASSERT(mode == TranslateAttributeYes || mode == TranslateAttributeNo); |
| return mode == TranslateAttributeYes; |
| } |
| } |
| |
| // 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, ltrValue, ("ltr")); |
| DEFINE_STATIC_LOCAL(const AtomicString, rtlValue, ("rtl")); |
| DEFINE_STATIC_LOCAL(const AtomicString, autoValue, ("auto")); |
| |
| if (equalIgnoringCase(value, ltrValue)) |
| return ltrValue; |
| if (equalIgnoringCase(value, rtlValue)) |
| return rtlValue; |
| if (equalIgnoringCase(value, autoValue)) |
| return autoValue; |
| return nullAtom; |
| } |
| |
| 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 == nullAtom) || equalIgnoringCase(direction, "auto"); |
| } |
| |
| TextDirection HTMLElement::directionalityIfhasDirAutoAttribute(bool& isAuto) const |
| { |
| isAuto = hasDirectionAuto(); |
| if (!isAuto) |
| return LTR; |
| return directionality(); |
| } |
| |
| TextDirection HTMLElement::directionality(Node** strongDirectionalityTextNode) const |
| { |
| if (isHTMLInputElement(*this)) { |
| HTMLInputElement* inputElement = toHTMLInputElement(const_cast<HTMLElement*>(this)); |
| bool hasStrongDirectionality; |
| TextDirection textDirection = determineDirectionality(inputElement->value(), &hasStrongDirectionality); |
| if (strongDirectionalityTextNode) |
| *strongDirectionalityTextNode = hasStrongDirectionality ? inputElement : 0; |
| return textDirection; |
| } |
| |
| Node* node = FlatTreeTraversal::firstChild(*this); |
| while (node) { |
| // Skip bdi, script, style and text form controls. |
| if (equalIgnoringCase(node->nodeName(), "bdi") || isHTMLScriptElement(*node) || isHTMLStyleElement(*node) |
| || (node->isElementNode() && toElement(node)->isTextFormControl())) { |
| node = FlatTreeTraversal::nextSkippingChildren(*node, this); |
| continue; |
| } |
| |
| // Skip elements with valid dir attribute |
| if (node->isElementNode()) { |
| AtomicString dirAttributeValue = toElement(node)->fastGetAttribute(dirAttr); |
| if (isValidDirAttribute(dirAttributeValue)) { |
| node = FlatTreeTraversal::nextSkippingChildren(*node, this); |
| continue; |
| } |
| } |
| |
| if (node->isTextNode()) { |
| bool hasStrongDirectionality; |
| TextDirection textDirection = determineDirectionality(node->textContent(true), &hasStrongDirectionality); |
| if (hasStrongDirectionality) { |
| if (strongDirectionalityTextNode) |
| *strongDirectionalityTextNode = node; |
| return textDirection; |
| } |
| } |
| node = FlatTreeTraversal::next(*node, this); |
| } |
| if (strongDirectionalityTextNode) |
| *strongDirectionalityTextNode = 0; |
| return LTR; |
| } |
| |
| bool HTMLElement::selfOrAncestorHasDirAutoAttribute() const |
| { |
| return layoutObject() && layoutObject()->style() && layoutObject()->style()->selfOrAncestorHasDirAutoAttribute(); |
| } |
| |
| 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. |
| updateDistribution(); |
| Element* parent = FlatTreeTraversal::parentElement(*this); |
| if (parent && parent->isHTMLElement() && toHTMLElement(parent)->selfOrAncestorHasDirAutoAttribute()) |
| toHTMLElement(parent)->adjustDirectionalityIfNeededAfterChildAttributeChanged(this); |
| |
| if (equalIgnoringCase(value, "auto")) |
| calculateAndAdjustDirectionality(); |
| } |
| |
| void HTMLElement::adjustDirectionalityIfNeededAfterChildAttributeChanged(Element* child) |
| { |
| ASSERT(selfOrAncestorHasDirAutoAttribute()); |
| TextDirection textDirection = directionality(); |
| if (layoutObject() && layoutObject()->style() && layoutObject()->style()->direction() != textDirection) { |
| Element* elementToAdjust = this; |
| for (; elementToAdjust; elementToAdjust = FlatTreeTraversal::parentElement(*elementToAdjust)) { |
| if (elementAffectsDirectionality(elementToAdjust)) { |
| elementToAdjust->setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::WritingModeChange)); |
| return; |
| } |
| } |
| } |
| } |
| |
| void HTMLElement::calculateAndAdjustDirectionality() |
| { |
| TextDirection textDirection = directionality(); |
| if (layoutObject() && layoutObject()->style() && layoutObject()->style()->direction() != textDirection) |
| setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::WritingModeChange)); |
| } |
| |
| void HTMLElement::adjustDirectionalityIfNeededAfterChildrenChanged(const ChildrenChange& change) |
| { |
| if (!selfOrAncestorHasDirAutoAttribute()) |
| return; |
| |
| updateDistribution(); |
| |
| for (Element* elementToAdjust = this; elementToAdjust; elementToAdjust = FlatTreeTraversal::parentElement(*elementToAdjust)) { |
| if (elementAffectsDirectionality(elementToAdjust)) { |
| toHTMLElement(elementToAdjust)->calculateAndAdjustDirectionality(); |
| return; |
| } |
| } |
| } |
| |
| void HTMLElement::addHTMLLengthToStyle(MutableStylePropertySet* style, CSSPropertyID propertyID, const String& value) |
| { |
| // FIXME: This function should not spin up the CSS parser, but should instead just figure out the correct |
| // length unit and make the appropriate parsed value. |
| |
| // strip attribute garbage.. |
| StringImpl* v = value.impl(); |
| if (v) { |
| unsigned length = 0; |
| |
| while (length < v->length() && (*v)[length] <= ' ') |
| length++; |
| |
| for (; length < v->length(); length++) { |
| UChar cc = (*v)[length]; |
| if (cc > '9') |
| break; |
| if (cc < '0') { |
| if (cc == '%' || cc == '*') { |
| if (propertyID == CSSPropertyWidth) |
| UseCounter::count(document(), UseCounter::HTMLElementDeprecatedWidth); |
| length++; |
| } |
| if (cc != '.') |
| break; |
| } |
| } |
| |
| if (length != v->length()) { |
| addPropertyToPresentationAttributeStyle(style, propertyID, v->substring(0, length)); |
| return; |
| } |
| } |
| |
| addPropertyToPresentationAttributeStyle(style, propertyID, value); |
| } |
| |
| static RGBA32 parseColorStringWithCrazyLegacyRules(const String& colorString) |
| { |
| // Per spec, only look at the first 128 digits of the string. |
| const size_t maxColorLength = 128; |
| // We'll pad the buffer with two extra 0s later, so reserve two more than the max. |
| Vector<char, maxColorLength+2> digitBuffer; |
| |
| size_t i = 0; |
| // Skip a leading #. |
| if (colorString[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 < colorString.length() && digitBuffer.size() < maxColorLength; i++) { |
| if (!isASCIIHexDigit(colorString[i])) |
| digitBuffer.append('0'); |
| else |
| digitBuffer.append(colorString[i]); |
| } |
| |
| if (!digitBuffer.size()) |
| return Color::black; |
| |
| // Pad the buffer out to at least the next multiple of three in size. |
| digitBuffer.append('0'); |
| digitBuffer.append('0'); |
| |
| if (digitBuffer.size() < 6) |
| return makeRGB(toASCIIHexValue(digitBuffer[0]), toASCIIHexValue(digitBuffer[1]), toASCIIHexValue(digitBuffer[2])); |
| |
| // Split the digits into three components, then search the last 8 digits of each component. |
| ASSERT(digitBuffer.size() >= 6); |
| size_t componentLength = digitBuffer.size() / 3; |
| size_t componentSearchWindowLength = min<size_t>(componentLength, 8); |
| size_t redIndex = componentLength - componentSearchWindowLength; |
| size_t greenIndex = componentLength * 2 - componentSearchWindowLength; |
| size_t blueIndex = componentLength * 3 - componentSearchWindowLength; |
| // Skip digits until one of them is non-zero, or we've only got two digits left in the component. |
| while (digitBuffer[redIndex] == '0' && digitBuffer[greenIndex] == '0' && digitBuffer[blueIndex] == '0' && (componentLength - redIndex) > 2) { |
| redIndex++; |
| greenIndex++; |
| blueIndex++; |
| } |
| ASSERT(redIndex + 1 < componentLength); |
| ASSERT(greenIndex >= componentLength); |
| ASSERT(greenIndex + 1 < componentLength * 2); |
| ASSERT(blueIndex >= componentLength * 2); |
| ASSERT_WITH_SECURITY_IMPLICATION(blueIndex + 1 < digitBuffer.size()); |
| |
| int redValue = toASCIIHexValue(digitBuffer[redIndex], digitBuffer[redIndex + 1]); |
| int greenValue = toASCIIHexValue(digitBuffer[greenIndex], digitBuffer[greenIndex + 1]); |
| int blueValue = toASCIIHexValue(digitBuffer[blueIndex], digitBuffer[blueIndex + 1]); |
| return makeRGB(redValue, greenValue, blueValue); |
| } |
| |
| // Color parsing that matches HTML's "rules for parsing a legacy color value" |
| void HTMLElement::addHTMLColorToStyle(MutableStylePropertySet* style, CSSPropertyID propertyID, const String& attributeValue) |
| { |
| // An empty string doesn't apply a color. (One containing only whitespace does, which is why this check occurs before stripping.) |
| if (attributeValue.isEmpty()) |
| return; |
| |
| String colorString = attributeValue.stripWhiteSpace(); |
| |
| // "transparent" doesn't apply a color either. |
| if (equalIgnoringCase(colorString, "transparent")) |
| return; |
| |
| Color color; |
| |
| // 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 ((colorString.length() == 4 || colorString.length() == 7) && colorString[0] == '#') |
| success = color.setFromString(colorString); |
| if (!success) |
| success = color.setNamedColor(colorString); |
| if (!success) |
| color.setRGB(parseColorStringWithCrazyLegacyRules(colorString)); |
| |
| style->setProperty(propertyID, cssValuePool().createColorValue(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& contextMenuId(fastGetAttribute(contextmenuAttr)); |
| if (contextMenuId.isNull()) |
| return nullptr; |
| |
| Element* element = treeScope().getElementById(contextMenuId); |
| // 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* contextMenu) |
| { |
| if (!contextMenu) { |
| 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& contextMenuId(contextMenu->fastGetAttribute(idAttr)); |
| |
| if (!contextMenuId.isNull() && contextMenu == treeScope().getElementById(contextMenuId)) |
| setAttribute(contextmenuAttr, contextMenuId); |
| 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() || equalIgnoringCase(value, "true") || equalIgnoringCase(value, "plaintext-only")) |
| return true; |
| if (equalIgnoringCase(value, "false")) |
| return false; |
| // All other values should be treated as "inherit". |
| } |
| |
| return parentElement() && parentElement()->hasEditableStyle(); |
| } |
| |
| void HTMLElement::handleKeypressEvent(KeyboardEvent* event) |
| { |
| if (!isSpatialNavigationEnabled(document().frame()) || !supportsFocus()) |
| return; |
| // 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 (isTextFormControl() || isContentEditable()) |
| return; |
| int charCode = event->charCode(); |
| if (charCode == '\r' || charCode == ' ') { |
| dispatchSimulatedClick(event); |
| event->setDefaultHandled(); |
| } |
| } |
| |
| const AtomicString& HTMLElement::eventParameterName() |
| { |
| DEFINE_STATIC_LOCAL(const AtomicString, eventString, ("event")); |
| return eventString; |
| } |
| |
| } // 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 |
