| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008 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 "config.h" |
| #include "HTMLElement.h" |
| |
| #include "CSSParser.h" |
| #include "CSSPropertyNames.h" |
| #include "CSSValueKeywords.h" |
| #include "CSSValuePool.h" |
| #include "DOMTokenList.h" |
| #include "DocumentFragment.h" |
| #include "ElementAncestorIterator.h" |
| #include "Event.h" |
| #include "EventListener.h" |
| #include "EventNames.h" |
| #include "ExceptionCode.h" |
| #include "Frame.h" |
| #include "FrameLoader.h" |
| #include "FrameView.h" |
| #include "HTMLBDIElement.h" |
| #include "HTMLBRElement.h" |
| #include "HTMLButtonElement.h" |
| #include "HTMLCollection.h" |
| #include "HTMLDocument.h" |
| #include "HTMLElementFactory.h" |
| #include "HTMLFieldSetElement.h" |
| #include "HTMLFormElement.h" |
| #include "HTMLInputElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLOptGroupElement.h" |
| #include "HTMLOptionElement.h" |
| #include "HTMLParserIdioms.h" |
| #include "HTMLSelectElement.h" |
| #include "HTMLTextAreaElement.h" |
| #include "HTMLTextFormControlElement.h" |
| #include "NodeTraversal.h" |
| #include "RenderElement.h" |
| #include "ScriptController.h" |
| #include "Settings.h" |
| #include "SimulatedClick.h" |
| #include "StyleProperties.h" |
| #include "SubframeLoader.h" |
| #include "Text.h" |
| #include "XMLNames.h" |
| #include "markup.h" |
| #include <wtf/NeverDestroyed.h> |
| #include <wtf/StdLibExtras.h> |
| #include <wtf/text/CString.h> |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| using namespace WTF; |
| |
| Ref<HTMLElement> HTMLElement::create(const QualifiedName& tagName, Document& document) |
| { |
| return adoptRef(*new HTMLElement(tagName, document)); |
| } |
| |
| String HTMLElement::nodeName() const |
| { |
| // FIXME: Would be nice to have an AtomicString lookup based off uppercase |
| // ASCII characters that does not have to copy the string on a hit in the hash. |
| if (document().isHTMLDocument()) { |
| if (LIKELY(!tagQName().hasPrefix())) |
| return tagQName().localNameUpper(); |
| return Element::nodeName().convertToASCIIUppercase(); |
| } |
| return Element::nodeName(); |
| } |
| |
| 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 |
| { |
| if (Optional<unsigned> borderWidth = parseHTMLNonNegativeInteger(value)) |
| return borderWidth.value(); |
| |
| return hasTagName(tableTag) ? 1 : 0; |
| } |
| |
| void HTMLElement::applyBorderAttributeToStyle(const AtomicString& value, MutableStyleProperties& style) |
| { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyBorderWidth, parseBorderWidthAttribute(value), CSSPrimitiveValue::CSS_PX); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyBorderStyle, CSSValueSolid); |
| } |
| |
| void HTMLElement::mapLanguageAttributeToLocale(const AtomicString& value, MutableStyleProperties& 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, quoteCSSString(value)); |
| } 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 StyledElement::isPresentationAttribute(name); |
| } |
| |
| static bool isLTROrRTLIgnoringCase(const AtomicString& dirAttributeValue) |
| { |
| return equalLettersIgnoringASCIICase(dirAttributeValue, "rtl") || equalLettersIgnoringASCIICase(dirAttributeValue, "ltr"); |
| } |
| |
| enum class ContentEditableType { |
| Inherit, |
| True, |
| False, |
| PlaintextOnly |
| }; |
| |
| static inline ContentEditableType contentEditableType(const AtomicString& value) |
| { |
| if (value.isNull()) |
| return ContentEditableType::Inherit; |
| if (value.isEmpty() || equalLettersIgnoringASCIICase(value, "true")) |
| return ContentEditableType::True; |
| if (equalLettersIgnoringASCIICase(value, "false")) |
| return ContentEditableType::False; |
| if (equalLettersIgnoringASCIICase(value, "plaintext-only")) |
| return ContentEditableType::PlaintextOnly; |
| |
| return ContentEditableType::Inherit; |
| } |
| |
| static ContentEditableType contentEditableType(const HTMLElement& element) |
| { |
| return contentEditableType(element.attributeWithoutSynchronization(contenteditableAttr)); |
| } |
| |
| void HTMLElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStyleProperties& style) |
| { |
| if (name == alignAttr) { |
| if (equalLettersIgnoringASCIICase(value, "middle")) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyTextAlign, CSSValueCenter); |
| else |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyTextAlign, value); |
| } else if (name == contenteditableAttr) { |
| CSSValueID userModifyValue = CSSValueReadWrite; |
| switch (contentEditableType(value)) { |
| case ContentEditableType::Inherit: |
| return; |
| case ContentEditableType::False: |
| userModifyValue = CSSValueReadOnly; |
| break; |
| case ContentEditableType::PlaintextOnly: |
| userModifyValue = CSSValueReadWritePlaintextOnly; |
| FALLTHROUGH; |
| case ContentEditableType::True: |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWordWrap, CSSValueBreakWord); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitNbspMode, CSSValueSpace); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace); |
| #if PLATFORM(IOS) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitTextSizeAdjust, CSSValueNone); |
| #endif |
| break; |
| } |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserModify, userModifyValue); |
| } else if (name == hiddenAttr) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyDisplay, CSSValueNone); |
| } else if (name == draggableAttr) { |
| if (equalLettersIgnoringASCIICase(value, "true")) { |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserDrag, CSSValueElement); |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserSelect, CSSValueNone); |
| } else if (equalLettersIgnoringASCIICase(value, "false")) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserDrag, CSSValueNone); |
| } else if (name == dirAttr) { |
| if (equalLettersIgnoringASCIICase(value, "auto")) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyUnicodeBidi, unicodeBidiAttributeForDirAuto(*this)); |
| else { |
| if (isLTROrRTLIgnoringCase(value)) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyDirection, value); |
| if (!hasTagName(bdiTag) && !hasTagName(bdoTag) && !hasTagName(outputTag)) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyUnicodeBidi, CSSValueEmbed); |
| } |
| } else if (name.matches(XMLNames::langAttr)) |
| mapLanguageAttributeToLocale(value, style); |
| else if (name == langAttr) { |
| // xml:lang has a higher priority than lang. |
| if (!hasAttributeWithoutSynchronization(XMLNames::langAttr)) |
| mapLanguageAttributeToLocale(value, style); |
| } else |
| StyledElement::collectStyleForPresentationAttribute(name, value, style); |
| } |
| |
| HTMLElement::EventHandlerNameMap HTMLElement::createEventHandlerNameMap() |
| { |
| EventHandlerNameMap map; |
| |
| static const QualifiedName* const table[] = { |
| &onabortAttr, |
| &onanimationendAttr, |
| &onanimationiterationAttr, |
| &onanimationstartAttr, |
| &onautocompleteAttr, |
| &onautocompleteerrorAttr, |
| &onbeforecopyAttr, |
| &onbeforecutAttr, |
| &onbeforeloadAttr, |
| &onbeforepasteAttr, |
| &onblurAttr, |
| &oncanplayAttr, |
| &oncanplaythroughAttr, |
| &onchangeAttr, |
| &onclickAttr, |
| &oncontextmenuAttr, |
| &oncopyAttr, |
| &oncutAttr, |
| &ondblclickAttr, |
| &ondragAttr, |
| &ondragendAttr, |
| &ondragenterAttr, |
| &ondragleaveAttr, |
| &ondragoverAttr, |
| &ondragstartAttr, |
| &ondropAttr, |
| &ondurationchangeAttr, |
| &onemptiedAttr, |
| &onendedAttr, |
| &onerrorAttr, |
| &onfocusAttr, |
| &onfocusinAttr, |
| &onfocusoutAttr, |
| &ongesturechangeAttr, |
| &ongestureendAttr, |
| &ongesturestartAttr, |
| &oninputAttr, |
| &oninvalidAttr, |
| &onkeydownAttr, |
| &onkeypressAttr, |
| &onkeyupAttr, |
| &onloadAttr, |
| &onloadeddataAttr, |
| &onloadedmetadataAttr, |
| &onloadstartAttr, |
| &onmousedownAttr, |
| &onmouseenterAttr, |
| &onmouseleaveAttr, |
| &onmousemoveAttr, |
| &onmouseoutAttr, |
| &onmouseoverAttr, |
| &onmouseupAttr, |
| &onmousewheelAttr, |
| &onpasteAttr, |
| &onpauseAttr, |
| &onplayAttr, |
| &onplayingAttr, |
| &onprogressAttr, |
| &onratechangeAttr, |
| &onresetAttr, |
| &onresizeAttr, |
| &onscrollAttr, |
| &onsearchAttr, |
| &onseekedAttr, |
| &onseekingAttr, |
| &onselectAttr, |
| &onselectstartAttr, |
| &onstalledAttr, |
| &onsubmitAttr, |
| &onsuspendAttr, |
| &ontimeupdateAttr, |
| &ontouchcancelAttr, |
| &ontouchendAttr, |
| &ontouchforcechangeAttr, |
| &ontouchmoveAttr, |
| &ontouchstartAttr, |
| &ontransitionendAttr, |
| &onvolumechangeAttr, |
| &onwaitingAttr, |
| &onwebkitbeginfullscreenAttr, |
| &onwebkitcurrentplaybacktargetiswirelesschangedAttr, |
| &onwebkitendfullscreenAttr, |
| &onwebkitfullscreenchangeAttr, |
| &onwebkitfullscreenerrorAttr, |
| &onwebkitkeyaddedAttr, |
| &onwebkitkeyerrorAttr, |
| &onwebkitkeymessageAttr, |
| &onwebkitmouseforcechangedAttr, |
| &onwebkitmouseforcedownAttr, |
| &onwebkitmouseforcewillbeginAttr, |
| &onwebkitmouseforceupAttr, |
| &onwebkitneedkeyAttr, |
| &onwebkitplaybacktargetavailabilitychangedAttr, |
| &onwebkitpresentationmodechangedAttr, |
| &onwebkitwillrevealbottomAttr, |
| &onwebkitwillrevealleftAttr, |
| &onwebkitwillrevealrightAttr, |
| &onwebkitwillrevealtopAttr, |
| &onwheelAttr, |
| }; |
| |
| populateEventHandlerNameMap(map, table); |
| |
| struct UnusualMapping { |
| const QualifiedName& attributeName; |
| const AtomicString& eventName; |
| }; |
| |
| const UnusualMapping unusualPairsTable[] = { |
| { onwebkitanimationendAttr, eventNames().webkitAnimationEndEvent }, |
| { onwebkitanimationiterationAttr, eventNames().webkitAnimationIterationEvent }, |
| { onwebkitanimationstartAttr, eventNames().webkitAnimationStartEvent }, |
| { onwebkittransitionendAttr, eventNames().webkitTransitionEndEvent }, |
| }; |
| |
| for (auto& entry : unusualPairsTable) |
| map.add(entry.attributeName.localName().impl(), entry.eventName); |
| |
| return map; |
| } |
| |
| void HTMLElement::populateEventHandlerNameMap(EventHandlerNameMap& map, const QualifiedName* const table[], size_t tableSize) |
| { |
| for (size_t i = 0; i < tableSize; ++i) { |
| auto* entry = table[i]; |
| |
| // FIXME: Would be nice to check these against the actual event names in eventNames(). |
| // Not obvious how to do that simply, though. |
| auto& attributeName = entry->localName(); |
| |
| // Remove the "on" prefix. Requires some memory allocation and computing a hash, but by not |
| // using pointers from eventNames(), the passed-in table can be initialized at compile time. |
| AtomicString eventName = attributeName.string().substring(2); |
| |
| map.add(attributeName.impl(), WTFMove(eventName)); |
| } |
| } |
| |
| const AtomicString& HTMLElement::eventNameForEventHandlerAttribute(const QualifiedName& attributeName, const EventHandlerNameMap& map) |
| { |
| ASSERT(!attributeName.localName().isNull()); |
| |
| // Event handler attributes have no namespace. |
| if (!attributeName.namespaceURI().isNull()) |
| return nullAtom; |
| |
| // Fast early return for names that don't start with "on". |
| AtomicStringImpl& localName = *attributeName.localName().impl(); |
| if (localName.length() < 3 || localName[0] != 'o' || localName[1] != 'n') |
| return nullAtom; |
| |
| auto it = map.find(&localName); |
| return it == map.end() ? nullAtom : it->value; |
| } |
| |
| const AtomicString& HTMLElement::eventNameForEventHandlerAttribute(const QualifiedName& attributeName) |
| { |
| static NeverDestroyed<EventHandlerNameMap> map = createEventHandlerNameMap(); |
| return eventNameForEventHandlerAttribute(attributeName, map.get()); |
| } |
| |
| Node::Editability HTMLElement::editabilityFromContentEditableAttr(const Node& node) |
| { |
| if (auto* startElement = is<Element>(node) ? &downcast<Element>(node) : node.parentElement()) { |
| for (auto& element : lineageOfType<HTMLElement>(*startElement)) { |
| switch (contentEditableType(element)) { |
| case ContentEditableType::True: |
| return Editability::CanEditRichly; |
| case ContentEditableType::PlaintextOnly: |
| return Editability::CanEditPlainText; |
| case ContentEditableType::False: |
| return Editability::ReadOnly; |
| case ContentEditableType::Inherit: |
| break; |
| } |
| } |
| } |
| |
| auto& document = node.document(); |
| if (is<HTMLDocument>(document)) |
| return downcast<HTMLDocument>(document).inDesignMode() ? Editability::CanEditRichly : Editability::ReadOnly; |
| |
| return Editability::ReadOnly; |
| } |
| |
| bool HTMLElement::matchesReadWritePseudoClass() const |
| { |
| return editabilityFromContentEditableAttr(*this) != Editability::ReadOnly; |
| } |
| |
| void HTMLElement::parseAttribute(const QualifiedName& name, const AtomicString& value) |
| { |
| if (name == dirAttr) { |
| dirAttributeChanged(value); |
| return; |
| } |
| |
| if (name == tabindexAttr) { |
| if (value.isEmpty()) |
| clearTabIndexExplicitlyIfNeeded(); |
| else if (Optional<int> tabIndex = parseHTMLInteger(value)) |
| setTabIndexExplicitly(tabIndex.value()); |
| return; |
| } |
| |
| auto& eventName = eventNameForEventHandlerAttribute(name); |
| if (!eventName.isNull()) |
| setAttributeEventListener(eventName, name, value); |
| } |
| |
| Ref<DocumentFragment> HTMLElement::textToFragment(const String& text, ExceptionCode& ec) |
| { |
| ec = 0; |
| |
| auto fragment = DocumentFragment::create(document()); |
| |
| for (unsigned start = 0, length = text.length(); start < length; ) { |
| |
| // Find next line break. |
| UChar c = 0; |
| unsigned i; |
| 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)), ec); |
| if (ec) |
| break; |
| |
| if (i == length) |
| break; |
| |
| fragment->appendChild(HTMLBRElement::create(document()), ec); |
| if (ec) |
| break; |
| |
| // 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); |
| } |
| |
| // 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) |
| { |
| static NeverDestroyed<AtomicString> ltrValue("ltr", AtomicString::ConstructFromLiteral); |
| static NeverDestroyed<AtomicString> rtlValue("rtl", AtomicString::ConstructFromLiteral); |
| static NeverDestroyed<AtomicString> autoValue("auto", AtomicString::ConstructFromLiteral); |
| if (equalLettersIgnoringASCIICase(value, "ltr")) |
| return ltrValue; |
| if (equalLettersIgnoringASCIICase(value, "rtl")) |
| return rtlValue; |
| if (equalLettersIgnoringASCIICase(value, "auto")) |
| return autoValue; |
| return nullAtom; |
| } |
| |
| const AtomicString& HTMLElement::dir() const |
| { |
| return toValidDirValue(attributeWithoutSynchronization(dirAttr)); |
| } |
| |
| void HTMLElement::setDir(const AtomicString& value) |
| { |
| setAttributeWithoutSynchronization(dirAttr, value); |
| } |
| |
| void HTMLElement::setInnerText(const String& text, ExceptionCode& ec) |
| { |
| if (ieForbidsInsertHTML()) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| if (shouldProhibitSetInnerOuterText(*this)) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| 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, ec); |
| return; |
| } |
| |
| // FIXME: Do we need to be able to detect preserveNewline style even when there's no renderer? |
| // FIXME: Can the renderer be out of date here? Do we need to call updateStyleIfNeeded? |
| // For example, for the contents of textarea elements that are display:none? |
| auto r = renderer(); |
| if ((r && r->style().preserveNewline()) || (inDocument() && isTextControlInnerTextElement())) { |
| if (!text.contains('\r')) { |
| replaceChildrenWithText(*this, text, ec); |
| return; |
| } |
| String textWithConsistentLineBreaks = text; |
| textWithConsistentLineBreaks.replace("\r\n", "\n"); |
| textWithConsistentLineBreaks.replace('\r', '\n'); |
| replaceChildrenWithText(*this, textWithConsistentLineBreaks, ec); |
| return; |
| } |
| |
| // Add text nodes and <br> elements. |
| ec = 0; |
| Ref<DocumentFragment> fragment = textToFragment(text, ec); |
| if (!ec) |
| replaceChildrenWithFragment(*this, WTFMove(fragment), ec); |
| } |
| |
| void HTMLElement::setOuterText(const String& text, ExceptionCode& ec) |
| { |
| if (ieForbidsInsertHTML()) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| if (shouldProhibitSetInnerOuterText(*this)) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| |
| RefPtr<ContainerNode> parent = parentNode(); |
| if (!parent) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| |
| RefPtr<Node> prev = previousSibling(); |
| RefPtr<Node> next = nextSibling(); |
| RefPtr<Node> newChild; |
| ec = 0; |
| |
| // Convert text to fragment with <br> tags instead of linebreaks if needed. |
| if (text.contains('\r') || text.contains('\n')) |
| newChild = textToFragment(text, ec); |
| else |
| newChild = Text::create(document(), text); |
| |
| if (!parentNode()) |
| ec = HIERARCHY_REQUEST_ERR; |
| if (ec) |
| return; |
| parent->replaceChild(*newChild, *this, ec); |
| |
| RefPtr<Node> node = next ? next->previousSibling() : nullptr; |
| if (!ec && is<Text>(node.get())) |
| mergeWithNextTextNode(downcast<Text>(*node), ec); |
| if (!ec && is<Text>(prev.get())) |
| mergeWithNextTextNode(downcast<Text>(*prev), ec); |
| } |
| |
| void HTMLElement::applyAlignmentAttributeToStyle(const AtomicString& alignment, MutableStyleProperties& 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 (equalLettersIgnoringASCIICase(alignment, "absmiddle")) |
| verticalAlignValue = CSSValueMiddle; |
| else if (equalLettersIgnoringASCIICase(alignment, "absbottom")) |
| verticalAlignValue = CSSValueBottom; |
| else if (equalLettersIgnoringASCIICase(alignment, "left")) { |
| floatValue = CSSValueLeft; |
| verticalAlignValue = CSSValueTop; |
| } else if (equalLettersIgnoringASCIICase(alignment, "right")) { |
| floatValue = CSSValueRight; |
| verticalAlignValue = CSSValueTop; |
| } else if (equalLettersIgnoringASCIICase(alignment, "top")) |
| verticalAlignValue = CSSValueTop; |
| else if (equalLettersIgnoringASCIICase(alignment, "middle")) |
| verticalAlignValue = CSSValueWebkitBaselineMiddle; |
| else if (equalLettersIgnoringASCIICase(alignment, "center")) |
| verticalAlignValue = CSSValueMiddle; |
| else if (equalLettersIgnoringASCIICase(alignment, "bottom")) |
| verticalAlignValue = CSSValueBaseline; |
| else if (equalLettersIgnoringASCIICase(alignment, "texttop")) |
| verticalAlignValue = CSSValueTextTop; |
| |
| if (floatValue != CSSValueInvalid) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyFloat, floatValue); |
| |
| if (verticalAlignValue != CSSValueInvalid) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyVerticalAlign, verticalAlignValue); |
| } |
| |
| bool HTMLElement::hasCustomFocusLogic() const |
| { |
| return false; |
| } |
| |
| bool HTMLElement::supportsFocus() const |
| { |
| return Element::supportsFocus() || (hasEditableStyle() && parentNode() && !parentNode()->hasEditableStyle()); |
| } |
| |
| String HTMLElement::contentEditable() const |
| { |
| switch (contentEditableType(*this)) { |
| case ContentEditableType::Inherit: |
| return ASCIILiteral("inherit"); |
| case ContentEditableType::True: |
| return ASCIILiteral("true"); |
| case ContentEditableType::False: |
| return ASCIILiteral("false"); |
| case ContentEditableType::PlaintextOnly: |
| return ASCIILiteral("plaintext-only"); |
| } |
| return ASCIILiteral("inherit"); |
| } |
| |
| void HTMLElement::setContentEditable(const String& enabled, ExceptionCode& ec) |
| { |
| if (equalLettersIgnoringASCIICase(enabled, "true")) |
| setAttributeWithoutSynchronization(contenteditableAttr, AtomicString("true", AtomicString::ConstructFromLiteral)); |
| else if (equalLettersIgnoringASCIICase(enabled, "false")) |
| setAttributeWithoutSynchronization(contenteditableAttr, AtomicString("false", AtomicString::ConstructFromLiteral)); |
| else if (equalLettersIgnoringASCIICase(enabled, "plaintext-only")) |
| setAttributeWithoutSynchronization(contenteditableAttr, AtomicString("plaintext-only", AtomicString::ConstructFromLiteral)); |
| else if (equalLettersIgnoringASCIICase(enabled, "inherit")) |
| removeAttribute(contenteditableAttr); |
| else |
| ec = SYNTAX_ERR; |
| } |
| |
| bool HTMLElement::draggable() const |
| { |
| return equalLettersIgnoringASCIICase(attributeWithoutSynchronization(draggableAttr), "true"); |
| } |
| |
| void HTMLElement::setDraggable(bool value) |
| { |
| setAttributeWithoutSynchronization(draggableAttr, value |
| ? AtomicString("true", AtomicString::ConstructFromLiteral) |
| : AtomicString("false", AtomicString::ConstructFromLiteral)); |
| } |
| |
| bool HTMLElement::spellcheck() const |
| { |
| return isSpellCheckingEnabled(); |
| } |
| |
| void HTMLElement::setSpellcheck(bool enable) |
| { |
| setAttributeWithoutSynchronization(spellcheckAttr, enable |
| ? AtomicString("true", AtomicString::ConstructFromLiteral) |
| : AtomicString("false", AtomicString::ConstructFromLiteral)); |
| } |
| |
| void HTMLElement::click() |
| { |
| simulateClick(*this, nullptr, SendNoEvents, DoNotShowPressedLook, SimulatedClickCreationOptions::FromBindings); |
| } |
| |
| void HTMLElement::accessKeyAction(bool sendMouseEvents) |
| { |
| dispatchSimulatedClick(nullptr, sendMouseEvents ? SendMouseUpDownEvents : SendNoEvents); |
| } |
| |
| String HTMLElement::title() const |
| { |
| return attributeWithoutSynchronization(titleAttr); |
| } |
| |
| int HTMLElement::tabIndex() const |
| { |
| if (supportsFocus()) |
| return Element::tabIndex(); |
| return -1; |
| } |
| |
| TranslateAttributeMode HTMLElement::translateAttributeMode() const |
| { |
| const AtomicString& value = attributeWithoutSynchronization(translateAttr); |
| |
| if (value.isNull()) |
| return TranslateAttributeInherit; |
| if (equalLettersIgnoringASCIICase(value, "yes") || value.isEmpty()) |
| return TranslateAttributeYes; |
| if (equalLettersIgnoringASCIICase(value, "no")) |
| return TranslateAttributeNo; |
| |
| return TranslateAttributeInherit; |
| } |
| |
| bool HTMLElement::translate() const |
| { |
| for (auto& element : lineageOfType<HTMLElement>(*this)) { |
| TranslateAttributeMode mode = element.translateAttributeMode(); |
| if (mode == TranslateAttributeInherit) |
| continue; |
| ASSERT(mode == TranslateAttributeYes || mode == TranslateAttributeNo); |
| return mode == TranslateAttributeYes; |
| } |
| |
| // Default on the root element is translate=yes. |
| return true; |
| } |
| |
| void HTMLElement::setTranslate(bool enable) |
| { |
| setAttributeWithoutSynchronization(translateAttr, enable ? "yes" : "no"); |
| } |
| |
| bool HTMLElement::rendererIsNeeded(const RenderStyle& style) |
| { |
| if (hasTagName(noscriptTag)) { |
| Frame* frame = document().frame(); |
| if (frame && frame->script().canExecuteScripts(NotAboutToExecuteScript)) |
| return false; |
| } else if (hasTagName(noembedTag)) { |
| Frame* frame = document().frame(); |
| if (frame && frame->loader().subframeLoader().allowPlugins()) |
| return false; |
| } |
| return StyledElement::rendererIsNeeded(style); |
| } |
| |
| RenderPtr<RenderElement> HTMLElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&) |
| { |
| return RenderElement::createFor(*this, WTFMove(style)); |
| } |
| |
| HTMLFormElement* HTMLElement::virtualForm() const |
| { |
| return HTMLFormElement::findClosestFormAncestor(*this); |
| } |
| |
| static inline bool elementAffectsDirectionality(const Node& node) |
| { |
| if (!is<HTMLElement>(node)) |
| return false; |
| const HTMLElement& element = downcast<HTMLElement>(node); |
| return is<HTMLBDIElement>(element) || element.hasAttributeWithoutSynchronization(dirAttr); |
| } |
| |
| static void setHasDirAutoFlagRecursively(Node* firstNode, bool flag, Node* lastNode = nullptr) |
| { |
| firstNode->setSelfOrAncestorHasDirAutoAttribute(flag); |
| |
| Node* node = firstNode->firstChild(); |
| |
| while (node) { |
| if (node->selfOrAncestorHasDirAutoAttribute() == flag) |
| return; |
| |
| if (elementAffectsDirectionality(*node)) { |
| if (node == lastNode) |
| return; |
| node = NodeTraversal::nextSkippingChildren(*node, firstNode); |
| continue; |
| } |
| node->setSelfOrAncestorHasDirAutoAttribute(flag); |
| if (node == lastNode) |
| return; |
| node = NodeTraversal::next(*node, firstNode); |
| } |
| } |
| |
| void HTMLElement::childrenChanged(const ChildChange& change) |
| { |
| StyledElement::childrenChanged(change); |
| adjustDirectionalityIfNeededAfterChildrenChanged(change.previousSiblingElement, change.type); |
| } |
| |
| bool HTMLElement::hasDirectionAuto() const |
| { |
| const AtomicString& direction = attributeWithoutSynchronization(dirAttr); |
| return (hasTagName(bdiTag) && direction.isNull()) || equalLettersIgnoringASCIICase(direction, "auto"); |
| } |
| |
| TextDirection HTMLElement::directionalityIfhasDirAutoAttribute(bool& isAuto) const |
| { |
| if (!(selfOrAncestorHasDirAutoAttribute() && hasDirectionAuto())) { |
| isAuto = false; |
| return LTR; |
| } |
| |
| isAuto = true; |
| return directionality(); |
| } |
| |
| TextDirection HTMLElement::directionality(Node** strongDirectionalityTextNode) const |
| { |
| if (is<HTMLTextFormControlElement>(*this)) { |
| HTMLTextFormControlElement& textElement = downcast<HTMLTextFormControlElement>(const_cast<HTMLElement&>(*this)); |
| bool hasStrongDirectionality; |
| UCharDirection textDirection = textElement.value().defaultWritingDirection(&hasStrongDirectionality); |
| if (strongDirectionalityTextNode) |
| *strongDirectionalityTextNode = hasStrongDirectionality ? &textElement : nullptr; |
| return (textDirection == U_LEFT_TO_RIGHT) ? LTR : RTL; |
| } |
| |
| Node* node = firstChild(); |
| while (node) { |
| // Skip bdi, script, style and text form controls. |
| if (equalLettersIgnoringASCIICase(node->nodeName(), "bdi") || node->hasTagName(scriptTag) || node->hasTagName(styleTag) |
| || (is<Element>(*node) && downcast<Element>(*node).isTextFormControl())) { |
| node = NodeTraversal::nextSkippingChildren(*node, this); |
| continue; |
| } |
| |
| // Skip elements with valid dir attribute |
| if (is<Element>(*node)) { |
| AtomicString dirAttributeValue = downcast<Element>(*node).attributeWithoutSynchronization(dirAttr); |
| if (isLTROrRTLIgnoringCase(dirAttributeValue) || equalLettersIgnoringASCIICase(dirAttributeValue, "auto")) { |
| node = NodeTraversal::nextSkippingChildren(*node, this); |
| continue; |
| } |
| } |
| |
| if (node->isTextNode()) { |
| bool hasStrongDirectionality; |
| UCharDirection textDirection = node->textContent(true).defaultWritingDirection(&hasStrongDirectionality); |
| if (hasStrongDirectionality) { |
| if (strongDirectionalityTextNode) |
| *strongDirectionalityTextNode = node; |
| return (textDirection == U_LEFT_TO_RIGHT) ? LTR : RTL; |
| } |
| } |
| node = NodeTraversal::next(*node, this); |
| } |
| if (strongDirectionalityTextNode) |
| *strongDirectionalityTextNode = nullptr; |
| return LTR; |
| } |
| |
| void HTMLElement::dirAttributeChanged(const AtomicString& value) |
| { |
| Element* parent = parentElement(); |
| |
| if (is<HTMLElement>(parent) && parent->selfOrAncestorHasDirAutoAttribute()) |
| downcast<HTMLElement>(*parent).adjustDirectionalityIfNeededAfterChildAttributeChanged(this); |
| |
| if (equalLettersIgnoringASCIICase(value, "auto")) |
| calculateAndAdjustDirectionality(); |
| } |
| |
| void HTMLElement::adjustDirectionalityIfNeededAfterChildAttributeChanged(Element* child) |
| { |
| ASSERT(selfOrAncestorHasDirAutoAttribute()); |
| Node* strongDirectionalityTextNode; |
| TextDirection textDirection = directionality(&strongDirectionalityTextNode); |
| setHasDirAutoFlagRecursively(child, false); |
| if (!renderer() || renderer()->style().direction() == textDirection) |
| return; |
| for (auto& elementToAdjust : elementLineage(this)) { |
| if (elementAffectsDirectionality(elementToAdjust)) { |
| elementToAdjust.setNeedsStyleRecalc(); |
| return; |
| } |
| } |
| } |
| |
| void HTMLElement::calculateAndAdjustDirectionality() |
| { |
| Node* strongDirectionalityTextNode; |
| TextDirection textDirection = directionality(&strongDirectionalityTextNode); |
| setHasDirAutoFlagRecursively(this, true, strongDirectionalityTextNode); |
| if (renderer() && renderer()->style().direction() != textDirection) |
| setNeedsStyleRecalc(); |
| } |
| |
| void HTMLElement::adjustDirectionalityIfNeededAfterChildrenChanged(Element* beforeChange, ChildChangeType changeType) |
| { |
| // FIXME: This function looks suspicious. |
| |
| if (!selfOrAncestorHasDirAutoAttribute()) |
| return; |
| |
| Node* oldMarkedNode = nullptr; |
| if (beforeChange) |
| oldMarkedNode = changeType == ElementInserted ? ElementTraversal::nextSibling(*beforeChange) : beforeChange->nextSibling(); |
| |
| while (oldMarkedNode && elementAffectsDirectionality(*oldMarkedNode)) |
| oldMarkedNode = oldMarkedNode->nextSibling(); |
| if (oldMarkedNode) |
| setHasDirAutoFlagRecursively(oldMarkedNode, false); |
| |
| for (auto& elementToAdjust : lineageOfType<HTMLElement>(*this)) { |
| if (elementAffectsDirectionality(elementToAdjust)) { |
| elementToAdjust.calculateAndAdjustDirectionality(); |
| return; |
| } |
| } |
| } |
| |
| void HTMLElement::addHTMLLengthToStyle(MutableStyleProperties& 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. |
| |
| if (StringImpl* string = value.impl()) { |
| unsigned parsedLength = 0; |
| |
| while (parsedLength < string->length() && (*string)[parsedLength] <= ' ') |
| ++parsedLength; |
| |
| for (; parsedLength < string->length(); ++parsedLength) { |
| UChar cc = (*string)[parsedLength]; |
| if (cc > '9') |
| break; |
| if (cc < '0') { |
| if (cc == '%' || cc == '*') |
| ++parsedLength; |
| if (cc != '.') |
| break; |
| } |
| } |
| |
| if (parsedLength != string->length()) { |
| addPropertyToPresentationAttributeStyle(style, propertyID, string->substring(0, parsedLength)); |
| 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 = std::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(MutableStyleProperties& 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 (equalLettersIgnoringASCIICase(colorString, "transparent")) |
| return; |
| |
| // If the string is a named CSS color or a 3/6-digit hex color, use that. |
| // We can't use the default Color constructor because it accepts |
| // 4/8-digit hex, which conflict with some legacy HTML content using attributes. |
| |
| Color color; |
| |
| if ((colorString.length() == 4 || colorString.length() == 7) && colorString[0] == '#') |
| color = Color(colorString); |
| if (!color.isValid()) |
| color.setNamedColor(colorString); |
| if (!color.isValid()) |
| color.setRGB(parseColorStringWithCrazyLegacyRules(colorString)); |
| |
| style.setProperty(propertyID, CSSValuePool::singleton().createColorValue(color.rgb())); |
| } |
| |
| bool HTMLElement::willRespondToMouseMoveEvents() |
| { |
| return !isDisabledFormControl() && Element::willRespondToMouseMoveEvents(); |
| } |
| |
| bool HTMLElement::willRespondToMouseWheelEvents() |
| { |
| return !isDisabledFormControl() && Element::willRespondToMouseWheelEvents(); |
| } |
| |
| bool HTMLElement::willRespondToMouseClickEvents() |
| { |
| return !isDisabledFormControl() && Element::willRespondToMouseClickEvents(); |
| } |
| |
| bool HTMLElement::canBeActuallyDisabled() const |
| { |
| return is<HTMLButtonElement>(*this) |
| || is<HTMLInputElement>(*this) |
| || is<HTMLSelectElement>(*this) |
| || is<HTMLTextAreaElement>(*this) |
| || is<HTMLOptGroupElement>(*this) |
| || is<HTMLOptionElement>(*this) |
| || is<HTMLFieldSetElement>(*this); |
| } |
| |
| bool HTMLElement::isActuallyDisabled() const |
| { |
| return canBeActuallyDisabled() && isDisabledFormControl(); |
| } |
| |
| } // namespace WebCore |
| |
| #ifndef NDEBUG |
| |
| // For use in the debugger |
| void dumpInnerHTML(WebCore::HTMLElement*); |
| |
| void dumpInnerHTML(WebCore::HTMLElement* element) |
| { |
| printf("%s\n", element->innerHTML().ascii().data()); |
| } |
| |
| #endif |
