/
HTMLElement.cpp
1092 lines (955 loc) · 39.7 KB
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HTMLElement.cpp
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/*
* 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 "Attribute.h"
#include "CSSParser.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "CSSValuePool.h"
#include "DOMSettableTokenList.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 "HTMLBRElement.h"
#include "HTMLCollection.h"
#include "HTMLDocument.h"
#include "HTMLElementFactory.h"
#include "HTMLFormElement.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "HTMLTemplateElement.h"
#include "HTMLTextFormControlElement.h"
#include "NodeTraversal.h"
#include "RenderLineBreak.h"
#include "ScriptController.h"
#include "Settings.h"
#include "StylePropertySet.h"
#include "SubframeLoader.h"
#include "Text.h"
#include "TextIterator.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;
using std::min;
using std::max;
PassRefPtr<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
// 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() && !tagQName().hasPrefix())
return tagQName().localNameUpper();
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 (hasLocalName(areaTag)
|| hasLocalName(baseTag)
|| hasLocalName(basefontTag)
|| hasLocalName(brTag)
|| hasLocalName(colTag)
|| hasLocalName(embedTag)
|| hasLocalName(frameTag)
|| hasLocalName(hrTag)
|| hasLocalName(imageTag)
|| hasLocalName(imgTag)
|| hasLocalName(inputTag)
|| hasLocalName(isindexTag)
|| hasLocalName(linkTag)
|| hasLocalName(metaTag)
|| hasLocalName(paramTag)
|| hasLocalName(sourceTag)
|| hasLocalName(wbrTag))
return true;
// FIXME: I'm not sure why dashboard mode would want to change the
// serialization of <canvas>, that seems like a bad idea.
#if ENABLE(DASHBOARD_SUPPORT)
if (hasLocalName(canvasTag)) {
Settings* settings = document().settings();
if (settings && settings->usesDashboardBackwardCompatibilityMode())
return true;
}
#endif
return false;
}
static inline CSSValueID unicodeBidiAttributeForDirAuto(HTMLElement& element)
{
if (element.hasLocalName(preTag) || element.hasLocalName(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))
return hasLocalName(tableTag) ? 1 : borderWidth;
return borderWidth;
}
void HTMLElement::applyBorderAttributeToStyle(const AtomicString& value, MutableStylePropertySet* style)
{
addPropertyToPresentationAttributeStyle(style, CSSPropertyBorderWidth, parseBorderWidthAttribute(value), CSSPrimitiveValue::CSS_PX);
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, 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);
}
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, CSSPropertyWebkitNbspMode, CSSValueSpace);
addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace);
} else if (equalIgnoringCase(value, "plaintext-only")) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitUserModify, CSSValueReadWritePlaintextOnly);
addPropertyToPresentationAttributeStyle(style, CSSPropertyWordWrap, CSSValueBreakWord);
addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitNbspMode, CSSValueSpace);
addPropertyToPresentationAttributeStyle(style, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace);
} 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 {
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 (!fastHasAttribute(XMLNames::langAttr))
mapLanguageAttributeToLocale(value, style);
} else
StyledElement::collectStyleForPresentationAttribute(name, value, style);
}
static NEVER_INLINE void populateEventNameForAttributeLocalNameMap(HashMap<AtomicStringImpl*, AtomicString>& map)
{
static const QualifiedName* const simpleTable[] = {
&onabortAttr,
&onbeforecopyAttr,
&onbeforecutAttr,
&onbeforepasteAttr,
&onblurAttr,
&oncanplayAttr,
&oncanplaythroughAttr,
&onchangeAttr,
&onclickAttr,
&oncontextmenuAttr,
&oncopyAttr,
&oncutAttr,
&ondblclickAttr,
&ondragAttr,
&ondragendAttr,
&ondragenterAttr,
&ondragleaveAttr,
&ondragoverAttr,
&ondragstartAttr,
&ondropAttr,
&ondurationchangeAttr,
&onemptiedAttr,
&onendedAttr,
&onerrorAttr,
&onfocusAttr,
&onfocusinAttr,
&onfocusoutAttr,
&oninputAttr,
&oninvalidAttr,
&onkeydownAttr,
&onkeypressAttr,
&onkeyupAttr,
&onloadAttr,
&onloadeddataAttr,
&onloadedmetadataAttr,
&onloadstartAttr,
&onmousedownAttr,
&onmouseenterAttr,
&onmouseleaveAttr,
&onmousemoveAttr,
&onmouseoutAttr,
&onmouseoverAttr,
&onmouseupAttr,
&onmousewheelAttr,
&onpasteAttr,
&onpauseAttr,
&onplayAttr,
&onplayingAttr,
&onprogressAttr,
&onratechangeAttr,
&onresetAttr,
&onscrollAttr,
&onseekedAttr,
&onseekingAttr,
&onselectAttr,
&onselectstartAttr,
&onstalledAttr,
&onsubmitAttr,
&onsuspendAttr,
&ontimeupdateAttr,
&ontouchcancelAttr,
&ontouchendAttr,
&ontouchmoveAttr,
&ontouchstartAttr,
&onvolumechangeAttr,
&onwaitingAttr,
&onwheelAttr,
#if ENABLE(FULLSCREEN_API)
&onwebkitfullscreenchangeAttr,
&onwebkitfullscreenerrorAttr,
#endif
};
for (unsigned i = 0, size = WTF_ARRAY_LENGTH(simpleTable); i < size; ++i) {
// FIXME: Would be nice to check these against the actual event names in eventNames().
// Not obvious how to do that simply, though.
const AtomicString& attributeName = simpleTable[i]->localName();
// Remove the "on" prefix. Requires some memory allocation and computing a hash, but
// by not using pointers from eventNames(), simpleTable can be initialized at compile time.
AtomicString eventName = attributeName.string().substring(2);
map.add(attributeName.impl(), eventName);
}
struct CustomMapping {
const QualifiedName& attributeName;
const AtomicString& eventName;
};
const CustomMapping customTable[] = {
{ ontransitionendAttr, eventNames().webkitTransitionEndEvent },
{ onwebkitanimationendAttr, eventNames().webkitAnimationEndEvent },
{ onwebkitanimationiterationAttr, eventNames().webkitAnimationIterationEvent },
{ onwebkitanimationstartAttr, eventNames().webkitAnimationStartEvent },
{ onwebkittransitionendAttr, eventNames().webkitTransitionEndEvent },
};
for (unsigned i = 0, size = WTF_ARRAY_LENGTH(customTable); i < size; ++i)
map.add(customTable[i].attributeName.localName().impl(), customTable[i].eventName);
}
void HTMLElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (isIdAttributeName(name) || name == classAttr || name == styleAttr)
return StyledElement::parseAttribute(name, value);
if (name == dirAttr)
dirAttributeChanged(value);
else if (name == tabindexAttr) {
int tabindex = 0;
if (value.isEmpty())
clearTabIndexExplicitlyIfNeeded();
else if (parseHTMLInteger(value, tabindex)) {
// Clamp tabindex to the range of 'short' to match Firefox's behavior.
setTabIndexExplicitly(max(static_cast<int>(std::numeric_limits<short>::min()), min(tabindex, static_cast<int>(std::numeric_limits<short>::max()))));
}
} else if (name.namespaceURI().isNull()) {
// FIXME: Can we do this even faster by checking the local name "on" prefix before we do anything with the map?
static NeverDestroyed<HashMap<AtomicStringImpl*, AtomicString>> eventNamesGlobal;
auto& eventNames = eventNamesGlobal.get();
if (eventNames.isEmpty())
populateEventNameForAttributeLocalNameMap(eventNames);
const AtomicString& eventName = eventNames.get(name.localName().impl());
if (!eventName.isNull())
setAttributeEventListener(eventName, name, value);
}
}
String HTMLElement::innerHTML() const
{
return createMarkup(*this, ChildrenOnly);
}
String HTMLElement::outerHTML() const
{
return createMarkup(*this);
}
void HTMLElement::setInnerHTML(const String& html, ExceptionCode& ec)
{
if (RefPtr<DocumentFragment> fragment = createFragmentForInnerOuterHTML(html, this, AllowScriptingContent, ec)) {
ContainerNode* container = this;
#if ENABLE(TEMPLATE_ELEMENT)
if (hasLocalName(templateTag))
container = toHTMLTemplateElement(this)->content();
#endif
replaceChildrenWithFragment(*container, fragment.release(), ec);
}
}
static void mergeWithNextTextNode(Text& node, ExceptionCode& ec)
{
Node* next = node.nextSibling();
if (!next || !next->isTextNode())
return;
Ref<Text> textNode(node);
Ref<Text> textNext(toText(*next));
textNode->appendData(textNext->data(), ec);
if (ec)
return;
textNext->remove(ec);
}
void HTMLElement::setOuterHTML(const String& html, ExceptionCode& ec)
{
Element* p = parentElement();
if (!p || !p->isHTMLElement()) {
ec = NO_MODIFICATION_ALLOWED_ERR;
return;
}
RefPtr<HTMLElement> parent = toHTMLElement(p);
RefPtr<Node> prev = previousSibling();
RefPtr<Node> next = nextSibling();
RefPtr<DocumentFragment> fragment = createFragmentForInnerOuterHTML(html, parent.get(), AllowScriptingContent, ec);
if (ec)
return;
parent->replaceChild(fragment.release(), this, ec);
RefPtr<Node> node = next ? next->previousSibling() : nullptr;
if (!ec && node && node->isTextNode())
mergeWithNextTextNode(toText(*node), ec);
if (!ec && prev && prev->isTextNode())
mergeWithNextTextNode(toText(*prev), ec);
}
PassRefPtr<DocumentFragment> HTMLElement::textToFragment(const String& text, ExceptionCode& ec)
{
RefPtr<DocumentFragment> fragment = DocumentFragment::create(document());
unsigned int i, length = text.length();
UChar c = 0;
for (unsigned int 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)), ec);
if (ec)
return nullptr;
if (c == '\r' || c == '\n') {
fragment->appendChild(HTMLBRElement::create(document()), ec);
if (ec)
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, ExceptionCode& ec)
{
if (ieForbidsInsertHTML()) {
ec = NO_MODIFICATION_ALLOWED_ERR;
return;
}
if (hasLocalName(colTag) || hasLocalName(colgroupTag) || hasLocalName(framesetTag) ||
hasLocalName(headTag) || hasLocalName(htmlTag) || hasLocalName(tableTag) ||
hasLocalName(tbodyTag) || hasLocalName(tfootTag) || hasLocalName(theadTag) ||
hasLocalName(trTag)) {
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()) {
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;
RefPtr<DocumentFragment> fragment = textToFragment(text, ec);
if (!ec)
replaceChildrenWithFragment(*this, fragment.release(), ec);
}
void HTMLElement::setOuterText(const String& text, ExceptionCode& ec)
{
if (ieForbidsInsertHTML()) {
ec = NO_MODIFICATION_ALLOWED_ERR;
return;
}
if (hasLocalName(colTag) || hasLocalName(colgroupTag) || hasLocalName(framesetTag) ||
hasLocalName(headTag) || hasLocalName(htmlTag) || hasLocalName(tableTag) ||
hasLocalName(tbodyTag) || hasLocalName(tfootTag) || hasLocalName(theadTag) ||
hasLocalName(trTag)) {
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 (!this || !parentNode())
ec = HIERARCHY_REQUEST_ERR;
if (ec)
return;
parent->replaceChild(newChild.release(), this, ec);
RefPtr<Node> node = next ? next->previousSibling() : nullptr;
if (!ec && node && node->isTextNode())
mergeWithNextTextNode(toText(*node), ec);
if (!ec && prev && prev->isTextNode())
mergeWithNextTextNode(toText(*prev), ec);
}
Node* HTMLElement::insertAdjacent(const String& where, Node* newChild, ExceptionCode& ec)
{
// In Internet Explorer if the element has no parent and where is "beforeBegin" or "afterEnd",
// a document fragment is created and the elements appended in the correct order. This document
// fragment isn't returned anywhere.
//
// This is impossible for us to implement as the DOM tree does not allow for such structures,
// Opera also appears to disallow such usage.
if (equalIgnoringCase(where, "beforeBegin")) {
ContainerNode* parent = this->parentNode();
return (parent && parent->insertBefore(newChild, this, ec)) ? newChild : nullptr;
}
if (equalIgnoringCase(where, "afterBegin"))
return insertBefore(newChild, firstChild(), ec) ? newChild : nullptr;
if (equalIgnoringCase(where, "beforeEnd"))
return appendChild(newChild, ec) ? newChild : nullptr;
if (equalIgnoringCase(where, "afterEnd")) {
ContainerNode* parent = this->parentNode();
return (parent && parent->insertBefore(newChild, nextSibling(), ec)) ? newChild : nullptr;
}
// IE throws COM Exception E_INVALIDARG; this is the best DOM exception alternative.
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
Element* HTMLElement::insertAdjacentElement(const String& where, Element* newChild, ExceptionCode& ec)
{
if (!newChild) {
// IE throws COM Exception E_INVALIDARG; this is the best DOM exception alternative.
ec = TYPE_MISMATCH_ERR;
return nullptr;
}
Node* returnValue = insertAdjacent(where, newChild, ec);
ASSERT_WITH_SECURITY_IMPLICATION(!returnValue || returnValue->isElementNode());
return toElement(returnValue);
}
// Step 3 of http://www.whatwg.org/specs/web-apps/current-work/multipage/apis-in-html-documents.html#insertadjacenthtml()
static Element* contextElementForInsertion(const String& where, Element* element, ExceptionCode& ec)
{
if (equalIgnoringCase(where, "beforeBegin") || equalIgnoringCase(where, "afterEnd")) {
ContainerNode* parent = element->parentNode();
if (parent && !parent->isElementNode()) {
ec = NO_MODIFICATION_ALLOWED_ERR;
return nullptr;
}
ASSERT_WITH_SECURITY_IMPLICATION(!parent || parent->isElementNode());
return toElement(parent);
}
if (equalIgnoringCase(where, "afterBegin") || equalIgnoringCase(where, "beforeEnd"))
return element;
ec = SYNTAX_ERR;
return nullptr;
}
void HTMLElement::insertAdjacentHTML(const String& where, const String& markup, ExceptionCode& ec)
{
Element* contextElement = contextElementForInsertion(where, this, ec);
if (!contextElement)
return;
RefPtr<DocumentFragment> fragment = createFragmentForInnerOuterHTML(markup, contextElement, AllowScriptingContent, ec);
if (!fragment)
return;
insertAdjacent(where, fragment.get(), ec);
}
void HTMLElement::insertAdjacentText(const String& where, const String& text, ExceptionCode& ec)
{
RefPtr<Text> textNode = document().createTextNode(text);
insertAdjacent(where, textNode.get(), ec);
}
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;
}
bool HTMLElement::supportsFocus() const
{
return Element::supportsFocus() || (rendererIsEditable() && parentNode() && !parentNode()->rendererIsEditable());
}
String HTMLElement::contentEditable() const
{
const AtomicString& value = fastGetAttribute(contenteditableAttr);
if (value.isNull())
return ASCIILiteral("inherit");
if (value.isEmpty() || equalIgnoringCase(value, "true"))
return ASCIILiteral("true");
if (equalIgnoringCase(value, "false"))
return ASCIILiteral("false");
if (equalIgnoringCase(value, "plaintext-only"))
return ASCIILiteral("plaintext-only");
return ASCIILiteral("inherit");
}
void HTMLElement::setContentEditable(const String& enabled, ExceptionCode& ec)
{
if (equalIgnoringCase(enabled, "true"))
setAttribute(contenteditableAttr, AtomicString("true", AtomicString::ConstructFromLiteral));
else if (equalIgnoringCase(enabled, "false"))
setAttribute(contenteditableAttr, AtomicString("false", AtomicString::ConstructFromLiteral));
else if (equalIgnoringCase(enabled, "plaintext-only"))
setAttribute(contenteditableAttr, AtomicString("plaintext-only", AtomicString::ConstructFromLiteral));
else if (equalIgnoringCase(enabled, "inherit"))
removeAttribute(contenteditableAttr);
else
ec = SYNTAX_ERR;
}
bool HTMLElement::draggable() const
{
return equalIgnoringCase(fastGetAttribute(draggableAttr), "true");
}
void HTMLElement::setDraggable(bool value)
{
setAttribute(draggableAttr, value
? AtomicString("true", AtomicString::ConstructFromLiteral)
: AtomicString("false", AtomicString::ConstructFromLiteral));
}
bool HTMLElement::spellcheck() const
{
return isSpellCheckingEnabled();
}
void HTMLElement::setSpellcheck(bool enable)
{
setAttribute(spellcheckAttr, enable
? AtomicString("true", AtomicString::ConstructFromLiteral)
: AtomicString("false", AtomicString::ConstructFromLiteral));
}
void HTMLElement::click()
{
dispatchSimulatedClick(nullptr, SendNoEvents, DoNotShowPressedLook);
}
void HTMLElement::accessKeyAction(bool sendMouseEvents)
{
dispatchSimulatedClick(nullptr, sendMouseEvents ? SendMouseUpDownEvents : SendNoEvents);
}
String HTMLElement::title() const
{
return fastGetAttribute(titleAttr);
}
short HTMLElement::tabIndex() const
{
if (supportsFocus())
return Element::tabIndex();
return -1;
}
void HTMLElement::setTabIndex(int value)
{
setIntegralAttribute(tabindexAttr, value);
}
TranslateAttributeMode HTMLElement::translateAttributeMode() const
{
const AtomicString& value = fastGetAttribute(translateAttr);
if (value.isNull())
return TranslateAttributeInherit;
if (equalIgnoringCase(value, "yes") || value.isEmpty())
return TranslateAttributeYes;
if (equalIgnoringCase(value, "no"))
return TranslateAttributeNo;
return TranslateAttributeInherit;
}
bool HTMLElement::translate() const
{
auto lineage = lineageOfType<HTMLElement>(this);
for (auto element = lineage.begin(), end = lineage.end(); element != end; ++element) {
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)
{
setAttribute(translateAttr, enable ? "yes" : "no");
}
PassRefPtr<HTMLCollection> HTMLElement::children()
{
return ensureCachedHTMLCollection(NodeChildren);
}
bool HTMLElement::rendererIsNeeded(const RenderStyle& style)
{
if (hasLocalName(noscriptTag)) {
Frame* frame = document().frame();
if (frame && frame->script().canExecuteScripts(NotAboutToExecuteScript))
return false;
} else if (hasLocalName(noembedTag)) {
Frame* frame = document().frame();
if (frame && frame->loader().subframeLoader().allowPlugins(NotAboutToInstantiatePlugin))
return false;
}
return StyledElement::rendererIsNeeded(style);
}
RenderElement* HTMLElement::createRenderer(RenderStyle& style)
{
if (hasLocalName(wbrTag))
return new RenderLineBreak(*this);
return RenderElement::createFor(*this, style);
}
HTMLFormElement* HTMLElement::virtualForm() const
{
return HTMLFormElement::findClosestFormAncestor(*this);
}
static inline bool elementAffectsDirectionality(const Node* node)
{
return node->isHTMLElement() && (node->hasTagName(bdiTag) || toHTMLElement(node)->hasAttribute(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 = fastGetAttribute(dirAttr);
return (hasTagName(bdiTag) && direction.isNull()) || equalIgnoringCase(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 (isHTMLTextFormControlElement(*this)) {
HTMLTextFormControlElement* textElement = toHTMLTextFormControlElement(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 (equalIgnoringCase(node->nodeName(), "bdi") || node->hasTagName(scriptTag) || node->hasTagName(styleTag)
|| (node->isElementNode() && toElement(node)->isTextFormControl())) {
node = NodeTraversal::nextSkippingChildren(node, this);
continue;
}
// Skip elements with valid dir attribute
if (node->isElementNode()) {
AtomicString dirAttributeValue = toElement(node)->fastGetAttribute(dirAttr);
if (equalIgnoringCase(dirAttributeValue, "rtl") || equalIgnoringCase(dirAttributeValue, "ltr") || equalIgnoringCase(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 (parent && parent->isHTMLElement() && parent->selfOrAncestorHasDirAutoAttribute())
toHTMLElement(parent)->adjustDirectionalityIfNeededAfterChildAttributeChanged(this);
if (equalIgnoringCase(value, "auto"))
calculateAndAdjustDirectionality();
}
void HTMLElement::adjustDirectionalityIfNeededAfterChildAttributeChanged(Element* child)
{
ASSERT(selfOrAncestorHasDirAutoAttribute());
Node* strongDirectionalityTextNode;
TextDirection textDirection = directionality(&strongDirectionalityTextNode);
setHasDirAutoFlagRecursively(child, false);
if (!renderer() || !renderer()->style() || renderer()->style()->direction() == textDirection)
return;
auto lineage = elementLineage(this);
for (auto elementToAdjust = lineage.begin(), end = lineage.end(); elementToAdjust != end; ++elementToAdjust) {
if (elementAffectsDirectionality(&*elementToAdjust)) {
elementToAdjust->setNeedsStyleRecalc();
return;
}
}
}
void HTMLElement::calculateAndAdjustDirectionality()
{
Node* strongDirectionalityTextNode;
TextDirection textDirection = directionality(&strongDirectionalityTextNode);
setHasDirAutoFlagRecursively(this, true, strongDirectionalityTextNode);
if (renderer() && renderer()->style() && renderer()->style()->direction() != textDirection)
setNeedsStyleRecalc();
}
void HTMLElement::adjustDirectionalityIfNeededAfterChildrenChanged(Element* beforeChange, ChildChangeType changeType)
{
// FIXME: This function looks suspicious.
if (document().renderView() && (changeType == ElementRemoved || changeType == TextRemoved)) {
Node* node = beforeChange ? beforeChange->nextSibling() : nullptr;
for (; node; node = node->nextSibling()) {
if (elementAffectsDirectionality(node))
continue;
setHasDirAutoFlagRecursively(node, false);
}
}
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);
auto lineage = lineageOfType<HTMLElement>(this);
for (auto elementToAdjust = lineage.begin(), end = lineage.end(); elementToAdjust != end; ++elementToAdjust) {
if (elementAffectsDirectionality(&*elementToAdjust)) {
elementToAdjust->calculateAndAdjustDirectionality();
return;
}
}
}
bool HTMLElement::isURLAttribute(const Attribute& attribute) const
{
return StyledElement::isURLAttribute(attribute);
}
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.
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);