| /* |
| * 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; |
| |
| 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(std::max(static_cast<int>(std::numeric_limits<short>::min()), std::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(PassRef<RenderStyle> style) |
| { |
| if (hasLocalName(wbrTag)) |
| return new RenderLineBreak(*this, std::move(style)); |
| return RenderElement::createFor(*this, std::move(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().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().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); |
| } |
| |
| 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(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; |
| |
| // If the string is a named CSS color or a 3/6-digit hex color, use that. |
| Color parsedColor(colorString); |
| if (!parsedColor.isValid()) |
| parsedColor.setRGB(parseColorStringWithCrazyLegacyRules(colorString)); |
| |
| style.setProperty(propertyID, cssValuePool().createColorValue(parsedColor.rgb())); |
| } |
| |
| } // 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 |
