blob: bcc0a555cf71c47163fa1bb53e27ca24f530af47 [file] [log] [blame]
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2006 Alexey Proskuryakov (ap@webkit.org)
* Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. 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 "Document.h"
#include "AXObjectCache.h"
#include "CDATASection.h"
#include "CSSHelper.h"
#include "CSSStyleSelector.h"
#include "CSSStyleSheet.h"
#include "CSSValueKeywords.h"
#include "CString.h"
#include "ClassNodeList.h"
#include "Comment.h"
#include "CookieJar.h"
#include "Database.h"
#include "DOMImplementation.h"
#include "DocLoader.h"
#include "DocumentFragment.h"
#include "DocumentLoader.h"
#include "DocumentType.h"
#include "EditingText.h"
#include "Editor.h"
#include "EditorClient.h"
#include "EntityReference.h"
#include "Event.h"
#include "EventHandler.h"
#include "EventListener.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "FocusController.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameTree.h"
#include "FrameView.h"
#include "HTMLBodyElement.h"
#include "HTMLDocument.h"
#include "HTMLElementFactory.h"
#include "HTMLFrameOwnerElement.h"
#include "HTMLHeadElement.h"
#include "HTMLImageLoader.h"
#include "HTMLInputElement.h"
#include "HTMLLinkElement.h"
#include "HTMLMapElement.h"
#include "HTMLNameCollection.h"
#include "HTMLNames.h"
#include "HTMLStyleElement.h"
#include "HTMLTitleElement.h"
#include "HTTPParsers.h"
#include "HistoryItem.h"
#include "HitTestRequest.h"
#include "HitTestResult.h"
#include "KeyboardEvent.h"
#include "Logging.h"
#include "MouseEvent.h"
#include "MouseEventWithHitTestResults.h"
#include "MutationEvent.h"
#include "NameNodeList.h"
#include "NodeFilter.h"
#include "NodeIterator.h"
#include "OverflowEvent.h"
#include "Page.h"
#include "PlatformKeyboardEvent.h"
#include "ProcessingInstruction.h"
#include "ProgressEvent.h"
#include "RegisteredEventListener.h"
#include "RegularExpression.h"
#include "RenderArena.h"
#include "RenderView.h"
#include "RenderWidget.h"
#include "SecurityOrigin.h"
#include "SegmentedString.h"
#include "SelectionController.h"
#include "Settings.h"
#include "StringHash.h"
#include "StyleSheetList.h"
#include "SystemTime.h"
#include "TextEvent.h"
#include "TextIterator.h"
#include "TextResourceDecoder.h"
#include "TreeWalker.h"
#include "UIEvent.h"
#include "WheelEvent.h"
#include "XMLHttpRequest.h"
#include "XMLTokenizer.h"
#include "kjs_binding.h"
#include "kjs_proxy.h"
#if ENABLE(DATABASE)
#include "DatabaseThread.h"
#endif
#if ENABLE(XPATH)
#include "XPathEvaluator.h"
#include "XPathExpression.h"
#include "XPathNSResolver.h"
#include "XPathResult.h"
#endif
#if ENABLE(XSLT)
#include "XSLTProcessor.h"
#endif
#if ENABLE(XBL)
#include "XBLBindingManager.h"
#endif
#if ENABLE(SVG)
#include "SVGDocumentExtensions.h"
#include "SVGElementFactory.h"
#include "SVGZoomEvent.h"
#include "SVGStyleElement.h"
#include "TimeScheduler.h"
#endif
using namespace std;
using namespace WTF;
using namespace Unicode;
namespace WebCore {
using namespace EventNames;
using namespace HTMLNames;
// #define INSTRUMENT_LAYOUT_SCHEDULING 1
// This amount of time must have elapsed before we will even consider scheduling a layout without a delay.
// FIXME: For faster machines this value can really be lowered to 200. 250 is adequate, but a little high
// for dual G5s. :)
static const int cLayoutScheduleThreshold = 250;
// Use 1 to represent the document's default form.
static HTMLFormElement* const defaultForm = reinterpret_cast<HTMLFormElement*>(1);
// Golden ratio - arbitrary start value to avoid mapping all 0's to all 0's
static const unsigned PHI = 0x9e3779b9U;
// DOM Level 2 says (letters added):
//
// a) Name start characters must have one of the categories Ll, Lu, Lo, Lt, Nl.
// b) Name characters other than Name-start characters must have one of the categories Mc, Me, Mn, Lm, or Nd.
// c) Characters in the compatibility area (i.e. with character code greater than #xF900 and less than #xFFFE) are not allowed in XML names.
// d) Characters which have a font or compatibility decomposition (i.e. those with a "compatibility formatting tag" in field 5 of the database -- marked by field 5 beginning with a "<") are not allowed.
// e) The following characters are treated as name-start characters rather than name characters, because the property file classifies them as Alphabetic: [#x02BB-#x02C1], #x0559, #x06E5, #x06E6.
// f) Characters #x20DD-#x20E0 are excluded (in accordance with Unicode, section 5.14).
// g) Character #x00B7 is classified as an extender, because the property list so identifies it.
// h) Character #x0387 is added as a name character, because #x00B7 is its canonical equivalent.
// i) Characters ':' and '_' are allowed as name-start characters.
// j) Characters '-' and '.' are allowed as name characters.
//
// It also contains complete tables. If we decide it's better, we could include those instead of the following code.
static inline bool isValidNameStart(UChar32 c)
{
// rule (e) above
if ((c >= 0x02BB && c <= 0x02C1) || c == 0x559 || c == 0x6E5 || c == 0x6E6)
return true;
// rule (i) above
if (c == ':' || c == '_')
return true;
// rules (a) and (f) above
const uint32_t nameStartMask = Letter_Lowercase | Letter_Uppercase | Letter_Other | Letter_Titlecase | Number_Letter;
if (!(Unicode::category(c) & nameStartMask))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
DecompositionType decompType = decompositionType(c);
if (decompType == DecompositionFont || decompType == DecompositionCompat)
return false;
return true;
}
static inline bool isValidNamePart(UChar32 c)
{
// rules (a), (e), and (i) above
if (isValidNameStart(c))
return true;
// rules (g) and (h) above
if (c == 0x00B7 || c == 0x0387)
return true;
// rule (j) above
if (c == '-' || c == '.')
return true;
// rules (b) and (f) above
const uint32_t otherNamePartMask = Mark_NonSpacing | Mark_Enclosing | Mark_SpacingCombining | Letter_Modifier | Number_DecimalDigit;
if (!(Unicode::category(c) & otherNamePartMask))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
DecompositionType decompType = decompositionType(c);
if (decompType == DecompositionFont || decompType == DecompositionCompat)
return false;
return true;
}
static Widget* widgetForNode(Node* focusedNode)
{
if (!focusedNode)
return 0;
RenderObject* renderer = focusedNode->renderer();
if (!renderer || !renderer->isWidget())
return 0;
return static_cast<RenderWidget*>(renderer)->widget();
}
static bool acceptsEditingFocus(Node *node)
{
ASSERT(node);
ASSERT(node->isContentEditable());
Node *root = node->rootEditableElement();
Frame* frame = node->document()->frame();
if (!frame || !root)
return false;
return frame->editor()->shouldBeginEditing(rangeOfContents(root).get());
}
DeprecatedPtrList<Document>* Document::changedDocuments = 0;
// FrameView might be 0
Document::Document(DOMImplementation* impl, Frame* frame, bool isXHTML)
: ContainerNode(0)
, m_implementation(impl)
, m_domtree_version(0)
, m_styleSheets(new StyleSheetList(this))
, m_title("")
, m_titleSetExplicitly(false)
, m_imageLoadEventTimer(this, &Document::imageLoadEventTimerFired)
, m_updateFocusAppearanceTimer(this, &Document::updateFocusAppearanceTimerFired)
#if ENABLE(XSLT)
, m_transformSource(0)
#endif
, m_xmlVersion("1.0")
, m_xmlStandalone(false)
#if ENABLE(XBL)
, m_bindingManager(new XBLBindingManager(this))
#endif
, m_savedRenderer(0)
, m_secureForms(0)
, m_designMode(inherit)
, m_selfOnlyRefCount(0)
#if ENABLE(SVG)
, m_svgExtensions(0)
#endif
, m_hasDashboardRegions(false)
, m_dashboardRegionsDirty(false)
, m_accessKeyMapValid(false)
, m_createRenderers(true)
, m_inPageCache(false)
, m_isAllowedToLoadLocalResources(false)
, m_useSecureKeyboardEntryWhenActive(false)
, m_isXHTML(isXHTML)
, m_numNodeListCaches(0)
#if ENABLE(DATABASE)
, m_hasOpenDatabases(false)
#endif
#if USE(LOW_BANDWIDTH_DISPLAY)
, m_inLowBandwidthDisplay(false)
#endif
{
m_document.resetSkippingRef(this);
m_printing = false;
m_frame = frame;
m_renderArena = 0;
m_axObjectCache = 0;
// FIXME: DocLoader probably no longer needs the frame argument
m_docLoader = new DocLoader(frame, this);
visuallyOrdered = false;
m_bParsing = false;
m_docChanged = false;
m_tokenizer = 0;
m_wellFormed = false;
pMode = Strict;
hMode = XHtml;
m_textColor = Color::black;
m_listenerTypes = 0;
m_inDocument = true;
m_inStyleRecalc = false;
m_closeAfterStyleRecalc = false;
m_usesDescendantRules = false;
m_usesSiblingRules = false;
m_usesFirstLineRules = false;
m_usesFirstLetterRules = false;
m_gotoAnchorNeededAfterStylesheetsLoad = false;
bool matchAuthorAndUserStyles = true;
if (Settings* settings = this->settings())
matchAuthorAndUserStyles = settings->authorAndUserStylesEnabled();
m_styleSelector = new CSSStyleSelector(this, userStyleSheet(), m_styleSheets.get(), m_mappedElementSheet.get(), !inCompatMode(), matchAuthorAndUserStyles);
m_didCalculateStyleSelector = false;
m_pendingStylesheets = 0;
m_ignorePendingStylesheets = false;
m_hasNodesWithPlaceholderStyle = false;
m_pendingSheetLayout = NoLayoutWithPendingSheets;
m_cssTarget = 0;
resetLinkColor();
resetVisitedLinkColor();
resetActiveLinkColor();
m_processingLoadEvent = false;
m_startTime = currentTime();
m_overMinimumLayoutThreshold = false;
initSecurityOrigin();
static int docID = 0;
m_docID = docID++;
}
void Document::removedLastRef()
{
ASSERT(!m_deletionHasBegun);
if (m_selfOnlyRefCount) {
// If removing a child removes the last self-only ref, we don't
// want the document to be destructed until after
// removeAllChildren returns, so we guard ourselves with an
// extra self-only ref.
DocPtr<Document> guard(this);
// We must make sure not to be retaining any of our children through
// these extra pointers or we will create a reference cycle.
m_docType = 0;
m_focusedNode = 0;
m_hoverNode = 0;
m_activeNode = 0;
m_titleElement = 0;
m_documentElement = 0;
removeAllChildren();
deleteAllValues(m_markers);
m_markers.clear();
delete m_tokenizer;
m_tokenizer = 0;
#ifndef NDEBUG
m_inRemovedLastRefFunction = false;
#endif
} else {
#ifndef NDEBUG
m_deletionHasBegun = true;
#endif
delete this;
}
}
Document::~Document()
{
ASSERT(!renderer());
ASSERT(!m_inPageCache);
ASSERT(!m_savedRenderer);
removeAllEventListeners();
#if ENABLE(SVG)
delete m_svgExtensions;
#endif
XMLHttpRequest::detachRequests(this);
{
KJS::JSLock lock;
KJS::ScriptInterpreter::forgetAllDOMNodesForDocument(this);
}
if (m_docChanged && changedDocuments)
changedDocuments->remove(this);
delete m_tokenizer;
m_document.resetSkippingRef(0);
delete m_styleSelector;
delete m_docLoader;
if (m_renderArena) {
delete m_renderArena;
m_renderArena = 0;
}
#if ENABLE(XSLT)
xmlFreeDoc((xmlDocPtr)m_transformSource);
#endif
#if ENABLE(XBL)
delete m_bindingManager;
#endif
deleteAllValues(m_markers);
clearAXObjectCache();
m_decoder = 0;
unsigned count = sizeof(m_nameCollectionInfo) / sizeof(m_nameCollectionInfo[0]);
for (unsigned i = 0; i < count; i++)
deleteAllValues(m_nameCollectionInfo[i]);
#if ENABLE(DATABASE)
if (m_databaseThread) {
ASSERT(m_databaseThread->terminationRequested());
m_databaseThread = 0;
}
#endif
if (m_styleSheets)
m_styleSheets->documentDestroyed();
m_document = 0;
}
void Document::resetLinkColor()
{
m_linkColor = Color(0, 0, 238);
}
void Document::resetVisitedLinkColor()
{
m_visitedLinkColor = Color(85, 26, 139);
}
void Document::resetActiveLinkColor()
{
m_activeLinkColor.setNamedColor("red");
}
void Document::setDocType(PassRefPtr<DocumentType> docType)
{
m_docType = docType;
}
DocumentType *Document::doctype() const
{
return m_docType.get();
}
DOMImplementation* Document::implementation() const
{
return m_implementation.get();
}
void Document::childrenChanged(bool changedByParser)
{
ContainerNode::childrenChanged(changedByParser);
// invalidate the document element we have cached in case it was replaced
m_documentElement = 0;
}
Element* Document::documentElement() const
{
if (!m_documentElement) {
Node* n = firstChild();
while (n && !n->isElementNode())
n = n->nextSibling();
m_documentElement = static_cast<Element*>(n);
}
return m_documentElement.get();
}
PassRefPtr<Element> Document::createElement(const String &name, ExceptionCode& ec)
{
if (m_isXHTML) {
if (!isValidName(name)) {
ec = INVALID_CHARACTER_ERR;
return 0;
}
return HTMLElementFactory::createHTMLElement(AtomicString(name), this, 0, false);
} else
return createElementNS(nullAtom, name, ec);
}
PassRefPtr<DocumentFragment> Document::createDocumentFragment()
{
return new DocumentFragment(document());
}
PassRefPtr<Text> Document::createTextNode(const String &data)
{
return new Text(this, data);
}
PassRefPtr<Comment> Document::createComment (const String &data)
{
return new Comment(this, data);
}
PassRefPtr<CDATASection> Document::createCDATASection(const String &data, ExceptionCode& ec)
{
if (isHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return new CDATASection(this, data);
}
PassRefPtr<ProcessingInstruction> Document::createProcessingInstruction(const String &target, const String &data, ExceptionCode& ec)
{
if (!isValidName(target)) {
ec = INVALID_CHARACTER_ERR;
return 0;
}
if (isHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return new ProcessingInstruction(this, target, data);
}
PassRefPtr<EntityReference> Document::createEntityReference(const String &name, ExceptionCode& ec)
{
if (!isValidName(name)) {
ec = INVALID_CHARACTER_ERR;
return 0;
}
if (isHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return new EntityReference(this, name);
}
PassRefPtr<EditingText> Document::createEditingTextNode(const String &text)
{
return new EditingText(this, text);
}
PassRefPtr<CSSStyleDeclaration> Document::createCSSStyleDeclaration()
{
return new CSSMutableStyleDeclaration;
}
PassRefPtr<Node> Document::importNode(Node* importedNode, bool deep, ExceptionCode& ec)
{
ec = 0;
if (!importedNode
#if ENABLE(SVG)
|| (importedNode->isSVGElement() && page() && page()->settings()->usesDashboardBackwardCompatibilityMode())
#endif
) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
switch (importedNode->nodeType()) {
case TEXT_NODE:
return createTextNode(importedNode->nodeValue());
case CDATA_SECTION_NODE:
return createCDATASection(importedNode->nodeValue(), ec);
case ENTITY_REFERENCE_NODE:
return createEntityReference(importedNode->nodeName(), ec);
case PROCESSING_INSTRUCTION_NODE:
return createProcessingInstruction(importedNode->nodeName(), importedNode->nodeValue(), ec);
case COMMENT_NODE:
return createComment(importedNode->nodeValue());
case ELEMENT_NODE: {
Element* oldElement = static_cast<Element*>(importedNode);
RefPtr<Element> newElement = createElementNS(oldElement->namespaceURI(), oldElement->tagQName().toString(), ec);
if (ec)
return 0;
NamedAttrMap* attrs = oldElement->attributes(true);
if (attrs) {
unsigned length = attrs->length();
for (unsigned i = 0; i < length; i++) {
Attribute* attr = attrs->attributeItem(i);
newElement->setAttribute(attr->name(), attr->value().impl(), ec);
if (ec)
return 0;
}
}
newElement->copyNonAttributeProperties(oldElement);
if (deep) {
for (Node* oldChild = oldElement->firstChild(); oldChild; oldChild = oldChild->nextSibling()) {
RefPtr<Node> newChild = importNode(oldChild, true, ec);
if (ec)
return 0;
newElement->appendChild(newChild.release(), ec);
if (ec)
return 0;
}
}
return newElement.release();
}
case ATTRIBUTE_NODE: {
RefPtr<Attr> newAttr = new Attr(0, this, static_cast<Attr*>(importedNode)->attr()->clone());
newAttr->createTextChild();
return newAttr.release();
}
case DOCUMENT_FRAGMENT_NODE: {
DocumentFragment* oldFragment = static_cast<DocumentFragment*>(importedNode);
RefPtr<DocumentFragment> newFragment = createDocumentFragment();
if (deep) {
for (Node* oldChild = oldFragment->firstChild(); oldChild; oldChild = oldChild->nextSibling()) {
RefPtr<Node> newChild = importNode(oldChild, true, ec);
if (ec)
return 0;
newFragment->appendChild(newChild.release(), ec);
if (ec)
return 0;
}
}
return newFragment.release();
}
case ENTITY_NODE:
case NOTATION_NODE:
// FIXME: It should be possible to import these node types, however in DOM3 the DocumentType is readonly, so there isn't much sense in doing that.
// Ability to add these imported nodes to a DocumentType will be considered for addition to a future release of the DOM.
case DOCUMENT_NODE:
case DOCUMENT_TYPE_NODE:
case XPATH_NAMESPACE_NODE:
break;
}
ec = NOT_SUPPORTED_ERR;
return 0;
}
PassRefPtr<Node> Document::adoptNode(PassRefPtr<Node> source, ExceptionCode& ec)
{
if (!source) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
switch (source->nodeType()) {
case ENTITY_NODE:
case NOTATION_NODE:
case DOCUMENT_NODE:
case DOCUMENT_TYPE_NODE:
case XPATH_NAMESPACE_NODE:
ec = NOT_SUPPORTED_ERR;
return 0;
case ATTRIBUTE_NODE: {
Attr* attr = static_cast<Attr*>(source.get());
if (attr->ownerElement())
attr->ownerElement()->removeAttributeNode(attr, ec);
attr->m_attrWasSpecifiedOrElementHasRareData = true;
break;
}
default:
if (source->parentNode())
source->parentNode()->removeChild(source.get(), ec);
}
for (Node* node = source.get(); node; node = node->traverseNextNode(source.get()))
node->setDocument(this);
return source;
}
// FIXME: This should really be in a possible ElementFactory class
PassRefPtr<Element> Document::createElement(const QualifiedName& qName, bool createdByParser, ExceptionCode& ec)
{
RefPtr<Element> e;
// FIXME: Use registered namespaces and look up in a hash to find the right factory.
if (qName.namespaceURI() == xhtmlNamespaceURI)
e = HTMLElementFactory::createHTMLElement(qName.localName(), this, 0, createdByParser);
#if ENABLE(SVG)
else if (qName.namespaceURI() == SVGNames::svgNamespaceURI)
e = SVGElementFactory::createSVGElement(qName, this, createdByParser);
#endif
if (!e)
e = new Element(qName, document());
if (e && !qName.prefix().isNull()) {
ec = 0;
e->setPrefix(qName.prefix(), ec);
if (ec)
return 0;
}
return e.release();
}
PassRefPtr<Element> Document::createElementNS(const String &_namespaceURI, const String &qualifiedName, ExceptionCode& ec)
{
String prefix, localName;
if (!parseQualifiedName(qualifiedName, prefix, localName)) {
ec = INVALID_CHARACTER_ERR;
return 0;
}
RefPtr<Element> e;
QualifiedName qName = QualifiedName(AtomicString(prefix), AtomicString(localName), AtomicString(_namespaceURI));
return createElement(qName, false, ec);
}
Element *Document::getElementById(const AtomicString& elementId) const
{
if (elementId.length() == 0)
return 0;
Element *element = m_elementsById.get(elementId.impl());
if (element)
return element;
if (m_duplicateIds.contains(elementId.impl())) {
// We know there's at least one node with this id, but we don't know what the first one is.
for (Node *n = traverseNextNode(); n != 0; n = n->traverseNextNode()) {
if (n->isElementNode()) {
element = static_cast<Element*>(n);
if (element->hasID() && element->getAttribute(idAttr) == elementId) {
m_duplicateIds.remove(elementId.impl());
m_elementsById.set(elementId.impl(), element);
return element;
}
}
}
ASSERT_NOT_REACHED();
}
return 0;
}
String Document::readyState() const
{
if (Frame* f = frame()) {
if (f->loader()->isComplete())
return "complete";
if (parsing())
return "loading";
return "loaded";
// FIXME: What does "interactive" mean?
// FIXME: Missing support for "uninitialized".
}
return String();
}
String Document::inputEncoding() const
{
if (TextResourceDecoder* d = decoder())
return d->encoding().name();
return String();
}
String Document::defaultCharset() const
{
if (Settings* settings = this->settings())
return settings->defaultTextEncodingName();
return String();
}
void Document::setCharset(const String& charset)
{
if (!decoder())
return;
decoder()->setEncoding(charset, TextResourceDecoder::UserChosenEncoding);
}
void Document::setXMLVersion(const String& version, ExceptionCode& ec)
{
// FIXME: also raise NOT_SUPPORTED_ERR if the version is set to a value that is not supported by this Document.
if (!implementation()->hasFeature("XML", String())) {
ec = NOT_SUPPORTED_ERR;
return;
}
m_xmlVersion = version;
}
void Document::setXMLStandalone(bool standalone, ExceptionCode& ec)
{
if (!implementation()->hasFeature("XML", String())) {
ec = NOT_SUPPORTED_ERR;
return;
}
m_xmlStandalone = standalone;
}
String Document::documentURI() const
{
return m_baseURL;
}
void Document::setDocumentURI(const String &uri)
{
m_baseURL = uri.deprecatedString();
}
String Document::baseURI() const
{
return documentURI();
}
Element* Document::elementFromPoint(int x, int y) const
{
if (!renderer())
return 0;
HitTestRequest request(true, true);
HitTestResult result(IntPoint(x, y));
renderer()->layer()->hitTest(request, result);
Node* n = result.innerNode();
while (n && !n->isElementNode())
n = n->parentNode();
if (n)
n = n->shadowAncestorNode();
return static_cast<Element*>(n);
}
void Document::addElementById(const AtomicString& elementId, Element* element)
{
typedef HashMap<AtomicStringImpl*, Element*>::iterator iterator;
if (!m_duplicateIds.contains(elementId.impl())) {
// Fast path. The ID is not already in m_duplicateIds, so we assume that it's
// also not already in m_elementsById and do an add. If that add succeeds, we're done.
pair<iterator, bool> addResult = m_elementsById.add(elementId.impl(), element);
if (addResult.second)
return;
// The add failed, so this ID was already cached in m_elementsById.
// There are multiple elements with this ID. Remove the m_elementsById
// cache for this ID so getElementById searches for it next time it is called.
m_elementsById.remove(addResult.first);
m_duplicateIds.add(elementId.impl());
} else {
// There are multiple elements with this ID. If it exists, remove the m_elementsById
// cache for this ID so getElementById searches for it next time it is called.
iterator cachedItem = m_elementsById.find(elementId.impl());
if (cachedItem != m_elementsById.end()) {
m_elementsById.remove(cachedItem);
m_duplicateIds.add(elementId.impl());
}
}
m_duplicateIds.add(elementId.impl());
}
void Document::removeElementById(const AtomicString& elementId, Element* element)
{
if (m_elementsById.get(elementId.impl()) == element)
m_elementsById.remove(elementId.impl());
else
m_duplicateIds.remove(elementId.impl());
}
Element* Document::getElementByAccessKey(const String& key) const
{
if (key.isEmpty())
return 0;
if (!m_accessKeyMapValid) {
for (Node* n = firstChild(); n; n = n->traverseNextNode()) {
if (!n->isElementNode())
continue;
Element* element = static_cast<Element*>(n);
const AtomicString& accessKey = element->getAttribute(accesskeyAttr);
if (!accessKey.isEmpty())
m_elementsByAccessKey.set(accessKey.impl(), element);
}
m_accessKeyMapValid = true;
}
return m_elementsByAccessKey.get(key.impl());
}
void Document::updateTitle()
{
if (Frame* f = frame())
f->loader()->setTitle(m_title);
}
void Document::setTitle(const String& title, Element* titleElement)
{
if (!titleElement) {
// Title set by JavaScript -- overrides any title elements.
m_titleSetExplicitly = true;
if (!isHTMLDocument())
m_titleElement = 0;
else if (!m_titleElement) {
if (HTMLElement* headElement = head()) {
ExceptionCode ec = 0;
m_titleElement = createElement("title", ec);
ASSERT(!ec);
headElement->appendChild(m_titleElement, ec);
ASSERT(!ec);
}
}
} else if (titleElement != m_titleElement) {
if (m_titleElement || m_titleSetExplicitly)
// Only allow the first title element to change the title -- others have no effect.
return;
m_titleElement = titleElement;
}
if (m_title == title)
return;
m_title = title;
updateTitle();
if (m_titleSetExplicitly && m_titleElement && m_titleElement->hasTagName(titleTag))
static_cast<HTMLTitleElement*>(m_titleElement.get())->setText(m_title);
}
void Document::removeTitle(Element* titleElement)
{
if (m_titleElement != titleElement)
return;
m_titleElement = 0;
m_titleSetExplicitly = false;
// Update title based on first title element in the head, if one exists.
if (HTMLElement* headElement = head()) {
for (Node* e = headElement->firstChild(); e; e = e->nextSibling())
if (e->hasTagName(titleTag)) {
HTMLTitleElement* titleElement = static_cast<HTMLTitleElement*>(e);
setTitle(titleElement->text(), titleElement);
break;
}
}
if (!m_titleElement && !m_title.isEmpty()) {
m_title = "";
updateTitle();
}
}
String Document::nodeName() const
{
return "#document";
}
Node::NodeType Document::nodeType() const
{
return DOCUMENT_NODE;
}
FrameView* Document::view() const
{
return m_frame ? m_frame->view() : 0;
}
Page* Document::page() const
{
return m_frame ? m_frame->page() : 0;
}
Settings* Document::settings() const
{
return m_frame ? m_frame->settings() : 0;
}
PassRefPtr<Range> Document::createRange()
{
return new Range(this);
}
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow,
NodeFilter* filter, bool expandEntityReferences, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return new NodeIterator(root, whatToShow, filter, expandEntityReferences);
}
PassRefPtr<TreeWalker> Document::createTreeWalker(Node *root, unsigned whatToShow,
NodeFilter* filter, bool expandEntityReferences, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return new TreeWalker(root, whatToShow, filter, expandEntityReferences);
}
void Document::setDocumentChanged(bool b)
{
if (b) {
if (!m_docChanged) {
if (!changedDocuments)
changedDocuments = new DeprecatedPtrList<Document>;
changedDocuments->append(this);
}
if (m_accessKeyMapValid) {
m_accessKeyMapValid = false;
m_elementsByAccessKey.clear();
}
} else {
if (m_docChanged && changedDocuments)
changedDocuments->remove(this);
}
m_docChanged = b;
}
void Document::recalcStyle(StyleChange change)
{
// we should not enter style recalc while painting
if (frame() && frame()->isPainting()) {
ASSERT(!frame()->isPainting());
return;
}
if (m_inStyleRecalc)
return; // Guard against re-entrancy. -dwh
m_inStyleRecalc = true;
suspendPostAttachCallbacks();
ASSERT(!renderer() || renderArena());
if (!renderer() || !renderArena())
goto bail_out;
if (change == Force) {
// style selector may set this again during recalc
m_hasNodesWithPlaceholderStyle = false;
RenderStyle* oldStyle = renderer()->style();
if (oldStyle)
oldStyle->ref();
RenderStyle* _style = new (m_renderArena) RenderStyle();
_style->ref();
_style->setDisplay(BLOCK);
_style->setVisuallyOrdered(visuallyOrdered);
// ### make the font stuff _really_ work!!!!
FontDescription fontDescription;
fontDescription.setUsePrinterFont(printing());
if (Settings* settings = this->settings()) {
fontDescription.setRenderingMode(settings->fontRenderingMode());
if (printing() && !settings->shouldPrintBackgrounds())
_style->setForceBackgroundsToWhite(true);
const AtomicString& stdfont = settings->standardFontFamily();
if (!stdfont.isEmpty()) {
fontDescription.firstFamily().setFamily(stdfont);
fontDescription.firstFamily().appendFamily(0);
}
fontDescription.setKeywordSize(CSS_VAL_MEDIUM - CSS_VAL_XX_SMALL + 1);
m_styleSelector->setFontSize(fontDescription, m_styleSelector->fontSizeForKeyword(CSS_VAL_MEDIUM, inCompatMode(), false));
}
_style->setFontDescription(fontDescription);
_style->font().update(m_styleSelector->fontSelector());
if (inCompatMode())
_style->setHtmlHacks(true); // enable html specific rendering tricks
StyleChange ch = diff(_style, oldStyle);
if (renderer() && ch != NoChange)
renderer()->setStyle(_style);
if (change != Force)
change = ch;
_style->deref(m_renderArena);
if (oldStyle)
oldStyle->deref(m_renderArena);
}
for (Node* n = firstChild(); n; n = n->nextSibling())
if (change >= Inherit || n->hasChangedChild() || n->changed())
n->recalcStyle(change);
if (changed() && view())
view()->layout();
bail_out:
setChanged(NoStyleChange);
setHasChangedChild(false);
setDocumentChanged(false);
resumePostAttachCallbacks();
m_inStyleRecalc = false;
// If we wanted to call implicitClose() during recalcStyle, do so now that we're finished.
if (m_closeAfterStyleRecalc) {
m_closeAfterStyleRecalc = false;
implicitClose();
}
}
void Document::updateRendering()
{
if (hasChangedChild())
recalcStyle(NoChange);
}
void Document::updateDocumentsRendering()
{
if (!changedDocuments)
return;
while (Document* doc = changedDocuments->take()) {
doc->m_docChanged = false;
doc->updateRendering();
}
}
void Document::updateLayout()
{
if (Element* oe = ownerElement())
oe->document()->updateLayout();
// FIXME: Dave Hyatt's pretty sure we can remove this because layout calls recalcStyle as needed.
updateRendering();
// Only do a layout if changes have occurred that make it necessary.
FrameView* v = view();
if (v && renderer() && (v->layoutPending() || renderer()->needsLayout()))
v->layout();
}
// FIXME: This is a bad idea and needs to be removed eventually.
// Other browsers load stylesheets before they continue parsing the web page.
// Since we don't, we can run JavaScript code that needs answers before the
// stylesheets are loaded. Doing a layout ignoring the pending stylesheets
// lets us get reasonable answers. The long term solution to this problem is
// to instead suspend JavaScript execution.
void Document::updateLayoutIgnorePendingStylesheets()
{
bool oldIgnore = m_ignorePendingStylesheets;
if (!haveStylesheetsLoaded()) {
m_ignorePendingStylesheets = true;
// FIXME: We are willing to attempt to suppress painting with outdated style info only once. Our assumption is that it would be
// dangerous to try to stop it a second time, after page content has already been loaded and displayed
// with accurate style information. (Our suppression involves blanking the whole page at the
// moment. If it were more refined, we might be able to do something better.)
// It's worth noting though that this entire method is a hack, since what we really want to do is
// suspend JS instead of doing a layout with inaccurate information.
if (body() && !body()->renderer() && m_pendingSheetLayout == NoLayoutWithPendingSheets) {
m_pendingSheetLayout = DidLayoutWithPendingSheets;
updateStyleSelector();
} else if (m_hasNodesWithPlaceholderStyle)
// If new nodes have been added or style recalc has been done with style sheets still pending, some nodes
// may not have had their real style calculated yet. Normally this gets cleaned when style sheets arrive
// but here we need up-to-date style immediatly.
recalcStyle(Force);
}
updateLayout();
m_ignorePendingStylesheets = oldIgnore;
}
void Document::attach()
{
ASSERT(!attached());
ASSERT(!m_inPageCache);
ASSERT(!m_axObjectCache);
if (!m_renderArena)
m_renderArena = new RenderArena();
// Create the rendering tree
setRenderer(new (m_renderArena) RenderView(this, view()));
recalcStyle(Force);
RenderObject* render = renderer();
setRenderer(0);
ContainerNode::attach();
setRenderer(render);
}
void Document::detach()
{
ASSERT(attached());
ASSERT(!m_inPageCache);
clearAXObjectCache();
RenderObject* render = renderer();
// indicate destruction mode, i.e. attached() but renderer == 0
setRenderer(0);
// Empty out these lists as a performance optimization, since detaching
// all the individual render objects will cause all the RenderImage
// objects to remove themselves from the lists.
m_imageLoadEventDispatchSoonList.clear();
m_imageLoadEventDispatchingList.clear();
m_hoverNode = 0;
m_focusedNode = 0;
m_activeNode = 0;
ContainerNode::detach();
if (render)
render->destroy();
// FIXME: is this needed or desirable?
m_frame = 0;
if (m_renderArena) {
delete m_renderArena;
m_renderArena = 0;
}
}
void Document::removeAllEventListenersFromAllNodes()
{
m_windowEventListeners.clear();
removeAllDisconnectedNodeEventListeners();
for (Node *n = this; n; n = n->traverseNextNode()) {
if (!n->isEventTargetNode())
continue;
EventTargetNodeCast(n)->removeAllEventListeners();
}
}
void Document::registerDisconnectedNodeWithEventListeners(Node* node)
{
m_disconnectedNodesWithEventListeners.add(node);
}
void Document::unregisterDisconnectedNodeWithEventListeners(Node* node)
{
m_disconnectedNodesWithEventListeners.remove(node);
}
void Document::removeAllDisconnectedNodeEventListeners()
{
HashSet<Node*>::iterator end = m_disconnectedNodesWithEventListeners.end();
for (HashSet<Node*>::iterator i = m_disconnectedNodesWithEventListeners.begin(); i != end; ++i)
EventTargetNodeCast(*i)->removeAllEventListeners();
m_disconnectedNodesWithEventListeners.clear();
}
void Document::clearAXObjectCache()
{
// clear cache in top document
if (m_axObjectCache) {
delete m_axObjectCache;
m_axObjectCache = 0;
return;
}
// ask the top-level document to clear its cache
Document* doc = topDocument();
if (doc != this)
doc->clearAXObjectCache();
}
AXObjectCache* Document::axObjectCache() const
{
// The only document that actually has a AXObjectCache is the top-level
// document. This is because we need to be able to get from any WebCoreAXObject
// to any other WebCoreAXObject on the same page. Using a single cache allows
// lookups across nested webareas (i.e. multiple documents).
if (m_axObjectCache) {
// return already known top-level cache
if (!ownerElement())
return m_axObjectCache;
// In some pages with frames, the cache is created before the sub-webarea is
// inserted into the tree. Here, we catch that case and just toss the old
// cache and start over.
// NOTE: This recovery may no longer be needed. I have been unable to trigger
// it again. See rdar://5794454
// FIXME: Can this be fixed when inserting the subframe instead of now?
// FIXME: If this function was called to get the cache in order to remove
// an AXObject, we are now deleting the cache as a whole and returning a
// new empty cache that does not contain the AXObject! That should actually
// be OK. I am concerned about other cases like this where accessing the
// cache blows away the AXObject being operated on.
delete m_axObjectCache;
m_axObjectCache = 0;
}
// ask the top-level document for its cache
Document* doc = topDocument();
if (doc != this)
return doc->axObjectCache();
// this is the top-level document, so install a new cache
m_axObjectCache = new AXObjectCache;
return m_axObjectCache;
}
void Document::setVisuallyOrdered()
{
visuallyOrdered = true;
if (renderer())
renderer()->style()->setVisuallyOrdered(true);
}
Tokenizer* Document::createTokenizer()
{
// FIXME: this should probably pass the frame instead
return new XMLTokenizer(this, view());
}
void Document::open()
{
// This is work that we should probably do in clear(), but we can't have it
// happen when implicitOpen() is called unless we reorganize Frame code.
if (Document *parent = parentDocument()) {
if (m_url.isEmpty() || m_url == "about:blank")
setURL(parent->baseURL());
if (m_baseURL.isEmpty() || m_baseURL == "about:blank")
setBaseURL(parent->baseURL());
}
if (m_frame) {
if (m_frame->loader()->isLoadingMainResource() || (tokenizer() && tokenizer()->executingScript()))
return;
if (m_frame->loader()->state() == FrameStateProvisional)
m_frame->loader()->stopAllLoaders();
}
implicitOpen();
if (m_frame)
m_frame->loader()->didExplicitOpen();
}
void Document::cancelParsing()
{
if (m_tokenizer) {
// We have to clear the tokenizer to avoid possibly triggering
// the onload handler when closing as a side effect of a cancel-style
// change, such as opening a new document or closing the window while
// still parsing
delete m_tokenizer;
m_tokenizer = 0;
close();
}
}
void Document::implicitOpen()
{
cancelParsing();
clear();
m_tokenizer = createTokenizer();
setParsing(true);
}
HTMLElement* Document::body()
{
Node* de = documentElement();
if (!de)
return 0;
// try to prefer a FRAMESET element over BODY
Node* body = 0;
for (Node* i = de->firstChild(); i; i = i->nextSibling()) {
if (i->hasTagName(framesetTag))
return static_cast<HTMLElement*>(i);
if (i->hasTagName(bodyTag))
body = i;
}
return static_cast<HTMLElement*>(body);
}
void Document::setBody(PassRefPtr<HTMLElement> newBody, ExceptionCode& ec)
{
if (!newBody) {
ec = HIERARCHY_REQUEST_ERR;
return;
}
HTMLElement* b = body();
if (!b)
documentElement()->appendChild(newBody, ec);
else
documentElement()->replaceChild(newBody, b, ec);
}
HTMLHeadElement* Document::head()
{
Node* de = documentElement();
if (!de)
return 0;
for (Node* e = de->firstChild(); e; e = e->nextSibling())
if (e->hasTagName(headTag))
return static_cast<HTMLHeadElement*>(e);
return 0;
}
void Document::close()
{
Frame* frame = this->frame();
if (frame) {
// This code calls implicitClose() if all loading has completed.
FrameLoader* frameLoader = frame->loader();
frameLoader->endIfNotLoadingMainResource();
frameLoader->checkCompleted();
} else {
// Because we have no frame, we don't know if all loading has completed,
// so we just call implicitClose() immediately. FIXME: This might fire
// the load event prematurely <http://bugs.webkit.org/show_bug.cgi?id=14568>.
implicitClose();
}
}
void Document::implicitClose()
{
// If we're in the middle of recalcStyle, we need to defer the close until the style information is accurate and all elements are re-attached.
if (m_inStyleRecalc) {
m_closeAfterStyleRecalc = true;
return;
}
bool wasLocationChangePending = frame() && frame()->loader()->isScheduledLocationChangePending();
bool doload = !parsing() && m_tokenizer && !m_processingLoadEvent && !wasLocationChangePending;
if (!doload)
return;
m_processingLoadEvent = true;
m_wellFormed = m_tokenizer && m_tokenizer->wellFormed();
// We have to clear the tokenizer, in case someone document.write()s from the
// onLoad event handler, as in Radar 3206524.
delete m_tokenizer;
m_tokenizer = 0;
// Create a body element if we don't already have one. See Radar 3758785.
if (!this->body() && isHTMLDocument()) {
if (Node* documentElement = this->documentElement()) {
ExceptionCode ec = 0;
documentElement->appendChild(new HTMLBodyElement(this), ec);
ASSERT(!ec);
}
}
dispatchImageLoadEventsNow();
this->dispatchWindowEvent(loadEvent, false, false);
if (Frame* f = frame())
f->loader()->handledOnloadEvents();
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("onload fired at %d\n", elapsedTime());
#endif
m_processingLoadEvent = false;
// An event handler may have removed the frame
if (!frame())
return;
// Make sure both the initial layout and reflow happen after the onload
// fires. This will improve onload scores, and other browsers do it.
// If they wanna cheat, we can too. -dwh
if (frame()->loader()->isScheduledLocationChangePending() && elapsedTime() < cLayoutScheduleThreshold) {
// Just bail out. Before or during the onload we were shifted to another page.
// The old i-Bench suite does this. When this happens don't bother painting or laying out.
view()->unscheduleRelayout();
return;
}
frame()->loader()->checkCallImplicitClose();
// Now do our painting/layout, but only if we aren't in a subframe or if we're in a subframe
// that has been sized already. Otherwise, our view size would be incorrect, so doing any
// layout/painting now would be pointless.
if (!ownerElement() || (ownerElement()->renderer() && !ownerElement()->renderer()->needsLayout())) {
updateRendering();
// Always do a layout after loading if needed.
if (view() && renderer() && (!renderer()->firstChild() || renderer()->needsLayout()))
view()->layout();
// Paint immediately after the document is ready. We do this to ensure that any timers set by the
// onload don't have a chance to fire before we would have painted. To avoid over-flushing we only
// worry about this for the top-level document.
#if !PLATFORM(MAC)
// FIXME: This causes a timing issue with the dispatchDidFinishLoad delegate callback.
// See <rdar://problem/5092361>
if (view() && !ownerElement())
view()->update();
#endif
}
#if PLATFORM(MAC)
if (renderer() && AXObjectCache::accessibilityEnabled())
axObjectCache()->postNotificationToElement(renderer(), "AXLoadComplete");
#endif
#if ENABLE(SVG)
// FIXME: Officially, time 0 is when the outermost <svg> receives its
// SVGLoad event, but we don't implement those yet. This is close enough
// for now. In some cases we should have fired earlier.
if (svgExtensions())
accessSVGExtensions()->startAnimations();
#endif
}
void Document::setParsing(bool b)
{
m_bParsing = b;
if (!m_bParsing && view())
view()->scheduleRelayout();
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement() && !m_bParsing)
printf("Parsing finished at %d\n", elapsedTime());
#endif
}
bool Document::shouldScheduleLayout()
{
// We can update layout if:
// (a) we actually need a layout
// (b) our stylesheets are all loaded
// (c) we have a <body>
return (renderer() && renderer()->needsLayout() && haveStylesheetsLoaded() &&
documentElement() && documentElement()->renderer() &&
(!documentElement()->hasTagName(htmlTag) || body()));
}
int Document::minimumLayoutDelay()
{
if (m_overMinimumLayoutThreshold)
return 0;
int elapsed = elapsedTime();
m_overMinimumLayoutThreshold = elapsed > cLayoutScheduleThreshold;
// We'll want to schedule the timer to fire at the minimum layout threshold.
return max(0, cLayoutScheduleThreshold - elapsed);
}
int Document::elapsedTime() const
{
return static_cast<int>((currentTime() - m_startTime) * 1000);
}
void Document::write(const String& text)
{
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Beginning a document.write at %d\n", elapsedTime());
#endif
if (!m_tokenizer) {
open();
ASSERT(m_tokenizer);
if (!m_tokenizer)
return;
write("<html>");
}
m_tokenizer->write(text, false);
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Ending a document.write at %d\n", elapsedTime());
#endif
}
void Document::writeln(const String& text)
{
write(text);
write("\n");
}
void Document::finishParsing()
{
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Received all data at %d\n", elapsedTime());
#endif
// Let the tokenizer go through as much data as it can. There will be three possible outcomes after
// finish() is called:
// (1) All remaining data is parsed, document isn't loaded yet
// (2) All remaining data is parsed, document is loaded, tokenizer gets deleted
// (3) Data is still remaining to be parsed.
if (m_tokenizer)
m_tokenizer->finish();
}
void Document::clear()
{
delete m_tokenizer;
m_tokenizer = 0;
removeChildren();
m_windowEventListeners.clear();
}
void Document::setURL(const DeprecatedString& url)
{
if (url == m_url)
return;
m_url = url;
if (m_styleSelector)
m_styleSelector->setEncodedURL(m_url);
m_isAllowedToLoadLocalResources = shouldBeAllowedToLoadLocalResources();
}
bool Document::shouldBeAllowedToLoadLocalResources() const
{
if (FrameLoader::shouldTreatURLAsLocal(m_url))
return true;
Frame* frame = this->frame();
if (!frame)
return false;
DocumentLoader* documentLoader = frame->loader()->documentLoader();
if (!documentLoader)
return false;
if (m_url == "about:blank" && frame->loader()->opener() && frame->loader()->opener()->document()->isAllowedToLoadLocalResources())
return true;
return documentLoader->substituteData().isValid();
}
void Document::setBaseURL(const DeprecatedString& baseURL)
{
m_baseURL = baseURL;
if (m_elemSheet)
m_elemSheet->setHref(m_baseURL);
}
void Document::setCSSStyleSheet(const String &url, const String& charset, const String &sheet)
{
m_sheet = new CSSStyleSheet(this, url, charset);
m_sheet->parseString(sheet);
updateStyleSelector();
}
#if FRAME_LOADS_USER_STYLESHEET
void Document::setUserStyleSheet(const String& sheet)
{
if (m_usersheet != sheet) {
m_usersheet = sheet;
updateStyleSelector();
}
}
#endif
String Document::userStyleSheet() const
{
#if FRAME_LOADS_USER_STYLESHEET
return m_usersheet;
#else
Page* page = this->page();
if (!page)
return String();
return page->userStyleSheet();
#endif
}
CSSStyleSheet* Document::elementSheet()
{
if (!m_elemSheet)
m_elemSheet = new CSSStyleSheet(this, baseURL());
return m_elemSheet.get();
}
CSSStyleSheet* Document::mappedElementSheet()
{
if (!m_mappedElementSheet)
m_mappedElementSheet = new CSSStyleSheet(this, baseURL());
return m_mappedElementSheet.get();
}
void Document::determineParseMode(const String&)
{
// For XML documents use strict parse mode.
// HTML overrides this method to determine the parse mode.
pMode = Strict;
hMode = XHtml;
}
static Node* nextNodeWithExactTabIndex(Node* start, int tabIndex, KeyboardEvent* event)
{
// Search is inclusive of start
for (Node* n = start; n; n = n->traverseNextNode())
if (n->isKeyboardFocusable(event) && n->tabIndex() == tabIndex)
return n;
return 0;
}
static Node* previousNodeWithExactTabIndex(Node* start, int tabIndex, KeyboardEvent* event)
{
// Search is inclusive of start
for (Node* n = start; n; n = n->traversePreviousNode())
if (n->isKeyboardFocusable(event) && n->tabIndex() == tabIndex)
return n;
return 0;
}
static Node* nextNodeWithGreaterTabIndex(Node* start, int tabIndex, KeyboardEvent* event)
{
// Search is inclusive of start
int winningTabIndex = SHRT_MAX + 1;
Node* winner = 0;
for (Node* n = start; n; n = n->traverseNextNode())
if (n->isKeyboardFocusable(event) && n->tabIndex() > tabIndex && n->tabIndex() < winningTabIndex) {
winner = n;
winningTabIndex = n->tabIndex();
}
return winner;
}
static Node* previousNodeWithLowerTabIndex(Node* start, int tabIndex, KeyboardEvent* event)
{
// Search is inclusive of start
int winningTabIndex = 0;
Node* winner = 0;
for (Node* n = start; n; n = n->traversePreviousNode())
if (n->isKeyboardFocusable(event) && n->tabIndex() < tabIndex && n->tabIndex() > winningTabIndex) {
winner = n;
winningTabIndex = n->tabIndex();
}
return winner;
}
Node* Document::nextFocusableNode(Node* start, KeyboardEvent* event)
{
if (start) {
// First try to find a node with the same tabindex as start that comes after start in the document.
if (Node* winner = nextNodeWithExactTabIndex(start->traverseNextNode(), start->tabIndex(), event))
return winner;
if (start->tabIndex() == 0)
// We've reached the last node in the document with a tabindex of 0. This is the end of the tabbing order.
return 0;
}
// Look for the first node in the document that:
// 1) has the lowest tabindex that is higher than start's tabindex (or 0, if start is null), and
// 2) comes first in the document, if there's a tie.
if (Node* winner = nextNodeWithGreaterTabIndex(this, start ? start->tabIndex() : 0, event))
return winner;
// There are no nodes with a tabindex greater than start's tabindex,
// so find the first node with a tabindex of 0.
return nextNodeWithExactTabIndex(this, 0, event);
}
Node* Document::previousFocusableNode(Node* start, KeyboardEvent* event)
{
Node* last;
for (last = this; last->lastChild(); last = last->lastChild())
; // Empty loop.
// First try to find the last node in the document that comes before start and has the same tabindex as start.
// If start is null, find the last node in the document with a tabindex of 0.
Node* startingNode;
int startingTabIndex;
if (start) {
startingNode = start->traversePreviousNode();
startingTabIndex = start->tabIndex();
} else {
startingNode = last;
startingTabIndex = 0;
}
if (Node* winner = previousNodeWithExactTabIndex(startingNode, startingTabIndex, event))
return winner;
// There are no nodes before start with the same tabindex as start, so look for a node that:
// 1) has the highest non-zero tabindex (that is less than start's tabindex), and
// 2) comes last in the document, if there's a tie.
startingTabIndex = (start && start->tabIndex()) ? start->tabIndex() : SHRT_MAX;
return previousNodeWithLowerTabIndex(last, startingTabIndex, event);
}
int Document::nodeAbsIndex(Node *node)
{
ASSERT(node->document() == this);
int absIndex = 0;
for (Node *n = node; n && n != this; n = n->traversePreviousNode())
absIndex++;
return absIndex;
}
Node *Document::nodeWithAbsIndex(int absIndex)
{
Node *n = this;
for (int i = 0; n && (i < absIndex); i++) {
n = n->traverseNextNode();
}
return n;
}
void Document::processHttpEquiv(const String &equiv, const String &content)
{
ASSERT(!equiv.isNull() && !content.isNull());
Frame *frame = this->frame();
if (equalIgnoringCase(equiv, "default-style")) {
// The preferred style set has been overridden as per section
// 14.3.2 of the HTML4.0 specification. We need to update the
// sheet used variable and then update our style selector.
// For more info, see the test at:
// http://www.hixie.ch/tests/evil/css/import/main/preferred.html
// -dwh
m_selectedStylesheetSet = content;
m_preferredStylesheetSet = content;
updateStyleSelector();
} else if (equalIgnoringCase(equiv, "refresh")) {
double delay;
String url;
if (frame && parseHTTPRefresh(content, true, delay, url)) {
if (url.isEmpty())
url = frame->loader()->url().string();
else
url = completeURL(url);
frame->loader()->scheduleHTTPRedirection(delay, url);
}
} else if (equalIgnoringCase(equiv, "set-cookie")) {
// FIXME: make setCookie work on XML documents too; e.g. in case of <html:meta .....>
if (isHTMLDocument())
static_cast<HTMLDocument*>(this)->setCookie(content);
} else if (equalIgnoringCase(equiv, "content-language"))
setContentLanguage(content);
}
MouseEventWithHitTestResults Document::prepareMouseEvent(const HitTestRequest& request, const IntPoint& documentPoint, const PlatformMouseEvent& event)
{
ASSERT(!renderer() || renderer()->isRenderView());
if (!renderer())
return MouseEventWithHitTestResults(event, HitTestResult(IntPoint()));
HitTestResult result(documentPoint);
renderer()->layer()->hitTest(request, result);
if (!request.readonly)
updateRendering();
return MouseEventWithHitTestResults(event, result);
}
// DOM Section 1.1.1
bool Document::childTypeAllowed(NodeType type)
{
switch (type) {
case ATTRIBUTE_NODE:
case CDATA_SECTION_NODE:
case DOCUMENT_FRAGMENT_NODE:
case DOCUMENT_NODE:
case ENTITY_NODE:
case ENTITY_REFERENCE_NODE:
case NOTATION_NODE:
case TEXT_NODE:
case XPATH_NAMESPACE_NODE:
return false;
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
return true;
case DOCUMENT_TYPE_NODE:
case ELEMENT_NODE:
// Documents may contain no more than one of each of these.
// (One Element and one DocumentType.)
for (Node* c = firstChild(); c; c = c->nextSibling())
if (c->nodeType() == type)
return false;
return true;
}
return false;
}
bool Document::canReplaceChild(Node* newChild, Node* oldChild)
{
if (!oldChild)
// ContainerNode::replaceChild will raise a NOT_FOUND_ERR.
return true;
if (oldChild->nodeType() == newChild->nodeType())
return true;
int numDoctypes = 0;
int numElements = 0;
// First, check how many doctypes and elements we have, not counting
// the child we're about to remove.
for (Node* c = firstChild(); c; c = c->nextSibling()) {
if (c == oldChild)
continue;
switch (c->nodeType()) {
case DOCUMENT_TYPE_NODE:
numDoctypes++;
break;
case ELEMENT_NODE:
numElements++;
break;
default:
break;
}
}
// Then, see how many doctypes and elements might be added by the new child.
if (newChild->nodeType() == DOCUMENT_FRAGMENT_NODE) {
for (Node* c = firstChild(); c; c = c->nextSibling()) {
switch (c->nodeType()) {
case ATTRIBUTE_NODE:
case CDATA_SECTION_NODE:
case DOCUMENT_FRAGMENT_NODE:
case DOCUMENT_NODE:
case ENTITY_NODE:
case ENTITY_REFERENCE_NODE:
case NOTATION_NODE:
case TEXT_NODE:
case XPATH_NAMESPACE_NODE:
return false;
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
break;
case DOCUMENT_TYPE_NODE:
numDoctypes++;
break;
case ELEMENT_NODE:
numElements++;
break;
}
}
} else {
switch (newChild->nodeType()) {
case ATTRIBUTE_NODE:
case CDATA_SECTION_NODE:
case DOCUMENT_FRAGMENT_NODE:
case DOCUMENT_NODE:
case ENTITY_NODE:
case ENTITY_REFERENCE_NODE:
case NOTATION_NODE:
case TEXT_NODE:
case XPATH_NAMESPACE_NODE:
return false;
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
return true;
case DOCUMENT_TYPE_NODE:
numDoctypes++;
break;
case ELEMENT_NODE:
numElements++;
break;
}
}
if (numElements > 1 || numDoctypes > 1)
return false;
return true;
}
PassRefPtr<Node> Document::cloneNode(bool /*deep*/)
{
// Spec says cloning Document nodes is "implementation dependent"
// so we do not support it...
return 0;
}
StyleSheetList* Document::styleSheets()
{
return m_styleSheets.get();
}
String Document::preferredStylesheetSet() const
{
return m_preferredStylesheetSet;
}
String Document::selectedStylesheetSet() const
{
return m_selectedStylesheetSet;
}
void Document::setSelectedStylesheetSet(const String& aString)
{
m_selectedStylesheetSet = aString;
updateStyleSelector();
if (renderer())
renderer()->repaint();
}
// This method is called whenever a top-level stylesheet has finished loading.
void Document::removePendingSheet()
{
// Make sure we knew this sheet was pending, and that our count isn't out of sync.
ASSERT(m_pendingStylesheets > 0);
m_pendingStylesheets--;
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Stylesheet loaded at time %d. %d stylesheets still remain.\n", elapsedTime(), m_pendingStylesheets);
#endif
updateStyleSelector();
if (!m_pendingStylesheets && m_tokenizer)
m_tokenizer->executeScriptsWaitingForStylesheets();
if (!m_pendingStylesheets && m_gotoAnchorNeededAfterStylesheetsLoad && m_frame)
m_frame->loader()->gotoAnchor();
}
void Document::updateStyleSelector()
{
// Don't bother updating, since we haven't loaded all our style info yet
// and haven't calculated the style selector for the first time.
if (!m_didCalculateStyleSelector && !haveStylesheetsLoaded())
return;
if (didLayoutWithPendingStylesheets() && m_pendingStylesheets <= 0) {
m_pendingSheetLayout = IgnoreLayoutWithPendingSheets;
if (renderer())
renderer()->repaint();
}
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Beginning update of style selector at time %d.\n", elapsedTime());
#endif
recalcStyleSelector();
recalcStyle(Force);
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Finished update of style selector at time %d\n", elapsedTime());
#endif
if (renderer()) {
renderer()->setNeedsLayoutAndPrefWidthsRecalc();
if (view())
view()->scheduleRelayout();
}
}
void Document::recalcStyleSelector()
{
if (!renderer() || !attached())
return;
DeprecatedPtrList<StyleSheet> oldStyleSheets = m_styleSheets->styleSheets;
m_styleSheets->styleSheets.clear();
bool matchAuthorAndUserStyles = true;
if (Settings* settings = this->settings())
matchAuthorAndUserStyles = settings->authorAndUserStylesEnabled();
Node* n = matchAuthorAndUserStyles ? this : 0;
for ( ; n; n = n->traverseNextNode()) {
StyleSheet* sheet = 0;
if (n->nodeType() == PROCESSING_INSTRUCTION_NODE) {
// Processing instruction (XML documents only)
ProcessingInstruction* pi = static_cast<ProcessingInstruction*>(n);
sheet = pi->sheet();
#if ENABLE(XSLT)
// Don't apply XSL transforms to already transformed documents -- <rdar://problem/4132806>
if (pi->isXSL() && !transformSourceDocument()) {
// Don't apply XSL transforms until loading is finished.
if (!parsing())
applyXSLTransform(pi);
return;
}
#endif
if (!sheet && !pi->localHref().isEmpty()) {
// Processing instruction with reference to an element in this document - e.g.
// <?xml-stylesheet href="#mystyle">, with the element
// <foo id="mystyle">heading { color: red; }</foo> at some location in
// the document
Element* elem = getElementById(pi->localHref().impl());
if (elem) {
String sheetText("");
for (Node* c = elem->firstChild(); c; c = c->nextSibling()) {
if (c->nodeType() == TEXT_NODE || c->nodeType() == CDATA_SECTION_NODE)
sheetText += c->nodeValue();
}
CSSStyleSheet* cssSheet = new CSSStyleSheet(this);
cssSheet->parseString(sheetText);
pi->setCSSStyleSheet(cssSheet);
sheet = cssSheet;
}
}
} else if (n->isHTMLElement() && (n->hasTagName(linkTag) || n->hasTagName(styleTag))
#if ENABLE(SVG)
|| (n->isSVGElement() && n->hasTagName(SVGNames::styleTag))
#endif
) {
Element* e = static_cast<Element*>(n);
AtomicString title = e->getAttribute(titleAttr);
bool enabledViaScript = false;
if (e->hasLocalName(linkTag)) {
// <LINK> element
HTMLLinkElement* l = static_cast<HTMLLinkElement*>(n);
if (l->isDisabled())
continue;
enabledViaScript = l->isEnabledViaScript();
if (l->isLoading()) {
// it is loading but we should still decide which style sheet set to use
if (!enabledViaScript && !title.isEmpty() && m_preferredStylesheetSet.isEmpty()) {
const AtomicString& rel = e->getAttribute(relAttr);
if (!rel.domString().contains("alternate")) {
m_preferredStylesheetSet = title;
m_selectedStylesheetSet = title;
}
}
continue;
}
if (!l->sheet())
title = nullAtom;
}
// Get the current preferred styleset. This is the
// set of sheets that will be enabled.
#if ENABLE(SVG)
if (n->isSVGElement() && n->hasTagName(SVGNames::styleTag))
sheet = static_cast<SVGStyleElement*>(n)->sheet();
else
#endif
if (e->hasLocalName(linkTag))
sheet = static_cast<HTMLLinkElement*>(n)->sheet();
else
// <STYLE> element
sheet = static_cast<HTMLStyleElement*>(n)->sheet();
// Check to see if this sheet belongs to a styleset
// (thus making it PREFERRED or ALTERNATE rather than
// PERSISTENT).
if (!enabledViaScript && !title.isEmpty()) {
// Yes, we have a title.
if (m_preferredStylesheetSet.isEmpty()) {
// No preferred set has been established. If
// we are NOT an alternate sheet, then establish
// us as the preferred set. Otherwise, just ignore
// this sheet.
AtomicString rel = e->getAttribute(relAttr);
if (e->hasLocalName(styleTag) || !rel.contains("alternate"))
m_preferredStylesheetSet = m_selectedStylesheetSet = title;
}
if (title != m_preferredStylesheetSet)
sheet = 0;
#if ENABLE(SVG)
if (!n->isHTMLElement())
title = title.deprecatedString().replace('&', "&&");
#endif
}
}
if (sheet) {
sheet->ref();
m_styleSheets->styleSheets.append(sheet);
}
// For HTML documents, stylesheets are not allowed within/after the <BODY> tag. So we
// can stop searching here.
if (isHTMLDocument() && n->hasTagName(bodyTag))
break;
}
// De-reference all the stylesheets in the old list
DeprecatedPtrListIterator<StyleSheet> it(oldStyleSheets);
for (; it.current(); ++it)
it.current()->deref();
// Create a new style selector
delete m_styleSelector;
m_styleSelector = new CSSStyleSelector(this, userStyleSheet(), m_styleSheets.get(), m_mappedElementSheet.get(), !inCompatMode(), matchAuthorAndUserStyles);
m_styleSelector->setEncodedURL(m_url);
m_didCalculateStyleSelector = true;
}
void Document::setHoverNode(PassRefPtr<Node> newHoverNode)
{
m_hoverNode = newHoverNode;
}
void Document::setActiveNode(PassRefPtr<Node> newActiveNode)
{
m_activeNode = newActiveNode;
}
void Document::focusedNodeRemoved()
{
setFocusedNode(0);
}
void Document::removeFocusedNodeOfSubtree(Node* node, bool amongChildrenOnly)
{
if (!m_focusedNode || this->inPageCache()) // If the document is in the page cache, then we don't need to clear out the focused node.
return;
bool nodeInSubtree = false;
if (amongChildrenOnly)
nodeInSubtree = m_focusedNode->isDescendantOf(node);
else
nodeInSubtree = (m_focusedNode == node) || m_focusedNode->isDescendantOf(node);
if (nodeInSubtree)
document()->focusedNodeRemoved();
}
void Document::hoveredNodeDetached(Node* node)
{
if (!m_hoverNode || (node != m_hoverNode && (!m_hoverNode->isTextNode() || node != m_hoverNode->parent())))
return;
m_hoverNode = node->parent();
while (m_hoverNode && !m_hoverNode->renderer())
m_hoverNode = m_hoverNode->parent();
if (frame())
frame()->eventHandler()->scheduleHoverStateUpdate();
}
void Document::activeChainNodeDetached(Node* node)
{
if (!m_activeNode || (node != m_activeNode && (!m_activeNode->isTextNode() || node != m_activeNode->parent())))
return;
m_activeNode = node->parent();
while (m_activeNode && !m_activeNode->renderer())
m_activeNode = m_activeNode->parent();
}
const Vector<DashboardRegionValue>& Document::dashboardRegions() const
{
return m_dashboardRegions;
}
void Document::setDashboardRegions(const Vector<DashboardRegionValue>& regions)
{
m_dashboardRegions = regions;
setDashboardRegionsDirty(false);
}
bool Document::setFocusedNode(PassRefPtr<Node> newFocusedNode)
{
// Make sure newFocusedNode is actually in this document
if (newFocusedNode && (newFocusedNode->document() != this))
return true;
if (m_focusedNode == newFocusedNode)
return true;
if (m_inPageCache)
return false;
bool focusChangeBlocked = false;
RefPtr<Node> oldFocusedNode = m_focusedNode;
m_focusedNode = 0;
// Remove focus from the existing focus node (if any)
if (oldFocusedNode && !oldFocusedNode->m_inDetach) {
if (oldFocusedNode->active())
oldFocusedNode->setActive(false);
oldFocusedNode->setFocus(false);
// Dispatch a change event for text fields or textareas that have been edited
RenderObject *r = static_cast<RenderObject*>(oldFocusedNode.get()->renderer());
if (r && (r->isTextArea() || r->isTextField()) && r->isEdited()) {
EventTargetNodeCast(oldFocusedNode.get())->dispatchHTMLEvent(changeEvent, true, false);
if ((r = static_cast<RenderObject*>(oldFocusedNode.get()->renderer())))
r->setEdited(false);
}
// Dispatch the blur event and let the node do any other blur related activities (important for text fields)
EventTargetNodeCast(oldFocusedNode.get())->dispatchBlurEvent();
if (m_focusedNode) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedNode = 0;
}
EventTargetNodeCast(oldFocusedNode.get())->dispatchUIEvent(DOMFocusOutEvent);
if (m_focusedNode) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedNode = 0;
}
if ((oldFocusedNode.get() == this) && oldFocusedNode->hasOneRef())
return true;
if (oldFocusedNode.get() == oldFocusedNode->rootEditableElement())
frame()->editor()->didEndEditing();
}
if (newFocusedNode) {
if (newFocusedNode == newFocusedNode->rootEditableElement() && !acceptsEditingFocus(newFocusedNode.get())) {
// delegate blocks focus change
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
// Set focus on the new node
m_focusedNode = newFocusedNode.get();
// Dispatch the focus event and let the node do any other focus related activities (important for text fields)
EventTargetNodeCast(m_focusedNode.get())->dispatchFocusEvent();
if (m_focusedNode != newFocusedNode) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
EventTargetNodeCast(m_focusedNode.get())->dispatchUIEvent(DOMFocusInEvent);
if (m_focusedNode != newFocusedNode) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
m_focusedNode->setFocus();
if (m_focusedNode.get() == m_focusedNode->rootEditableElement())
frame()->editor()->didBeginEditing();
// eww, I suck. set the qt focus correctly
// ### find a better place in the code for this
if (view()) {
Widget *focusWidget = widgetForNode(m_focusedNode.get());
if (focusWidget) {
// Make sure a widget has the right size before giving it focus.
// Otherwise, we are testing edge cases of the Widget code.
// Specifically, in WebCore this does not work well for text fields.
updateLayout();
// Re-get the widget in case updating the layout changed things.
focusWidget = widgetForNode(m_focusedNode.get());
}
if (focusWidget)
focusWidget->setFocus();
else
view()->setFocus();
}
}
#if PLATFORM(MAC)
if (!focusChangeBlocked && m_focusedNode && AXObjectCache::accessibilityEnabled())
axObjectCache()->handleFocusedUIElementChanged();
#endif
SetFocusedNodeDone:
updateRendering();
return !focusChangeBlocked;
}
void Document::setCSSTarget(Node* n)
{
if (m_cssTarget)
m_cssTarget->setChanged();
m_cssTarget = n;
if (n)
n->setChanged();
}
Node* Document::getCSSTarget() const
{
return m_cssTarget;
}
void Document::attachNodeIterator(NodeIterator *ni)
{
m_nodeIterators.add(ni);
}
void Document::detachNodeIterator(NodeIterator *ni)
{
m_nodeIterators.remove(ni);
}
void Document::notifyBeforeNodeRemoval(Node *n)
{
if (Frame* f = frame()) {
f->selectionController()->nodeWillBeRemoved(n);
f->dragCaretController()->nodeWillBeRemoved(n);
}
HashSet<NodeIterator*>::const_iterator end = m_nodeIterators.end();
for (HashSet<NodeIterator*>::const_iterator it = m_nodeIterators.begin(); it != end; ++it)
(*it)->notifyBeforeNodeRemoval(n);
}
DOMWindow* Document::defaultView() const
{
if (!frame())
return 0;
return frame()->domWindow();
}
PassRefPtr<Event> Document::createEvent(const String &eventType, ExceptionCode& ec)
{
if (eventType == "UIEvents" || eventType == "UIEvent")
return new UIEvent;
if (eventType == "MouseEvents" || eventType == "MouseEvent")
return new MouseEvent;
if (eventType == "MutationEvents" || eventType == "MutationEvent")
return new MutationEvent;
if (eventType == "KeyboardEvents" || eventType == "KeyboardEvent")
return new KeyboardEvent;
if (eventType == "HTMLEvents" || eventType == "Event" || eventType == "Events")
return new Event;
if (eventType == "ProgressEvent")
return new ProgressEvent;
if (eventType == "TextEvent")
return new TextEvent;
if (eventType == "OverflowEvent")
return new OverflowEvent;
if (eventType == "WheelEvent")
return new WheelEvent;
#if ENABLE(SVG)
if (eventType == "SVGEvents")
return new Event;
if (eventType == "SVGZoomEvents")
return new SVGZoomEvent;
#endif
ec = NOT_SUPPORTED_ERR;
return 0;
}
CSSStyleDeclaration *Document::getOverrideStyle(Element */*elt*/, const String &/*pseudoElt*/)
{
return 0; // ###
}
void Document::handleWindowEvent(Event *evt, bool useCapture)
{
if (m_windowEventListeners.isEmpty())
return;
// if any html event listeners are registered on the window, then dispatch them here
RegisteredEventListenerList listenersCopy = m_windowEventListeners;
RegisteredEventListenerList::iterator it = listenersCopy.begin();
for (; it != listenersCopy.end(); ++it)
if ((*it)->eventType() == evt->type() && (*it)->useCapture() == useCapture && !(*it)->removed())
(*it)->listener()->handleEvent(evt, true);
}
void Document::setHTMLWindowEventListener(const AtomicString &eventType, PassRefPtr<EventListener> listener)
{
// If we already have it we don't want removeWindowEventListener to delete it
removeHTMLWindowEventListener(eventType);
if (listener)
addWindowEventListener(eventType, listener, false);
}
EventListener *Document::getHTMLWindowEventListener(const AtomicString &eventType)
{
RegisteredEventListenerList::iterator it = m_windowEventListeners.begin();
for (; it != m_windowEventListeners.end(); ++it)
if ( (*it)->eventType() == eventType && (*it)->listener()->isHTMLEventListener())
return (*it)->listener();
return 0;
}
void Document::removeHTMLWindowEventListener(const AtomicString &eventType)
{
RegisteredEventListenerList::iterator it = m_windowEventListeners.begin();
for (; it != m_windowEventListeners.end(); ++it)
if ( (*it)->eventType() == eventType && (*it)->listener()->isHTMLEventListener()) {
m_windowEventListeners.remove(it);
return;
}
}
void Document::addWindowEventListener(const AtomicString &eventType, PassRefPtr<EventListener> listener, bool useCapture)
{
// Remove existing identical listener set with identical arguments.
// The DOM 2 spec says that "duplicate instances are discarded" in this case.
removeWindowEventListener(eventType, listener.get(), useCapture);
m_windowEventListeners.append(new RegisteredEventListener(eventType, listener, useCapture));
}
void Document::removeWindowEventListener(const AtomicString &eventType, EventListener *listener, bool useCapture)
{
RegisteredEventListener rl(eventType, listener, useCapture);
RegisteredEventListenerList::iterator it = m_windowEventListeners.begin();
for (; it != m_windowEventListeners.end(); ++it)
if (*(*it) == rl) {
m_windowEventListeners.remove(it);
return;
}
}
bool Document::hasWindowEventListener(const AtomicString &eventType)
{
RegisteredEventListenerList::iterator it = m_windowEventListeners.begin();
for (; it != m_windowEventListeners.end(); ++it)
if ((*it)->eventType() == eventType) {
return true;
}
return false;
}
PassRefPtr<EventListener> Document::createHTMLEventListener(const String& functionName, const String& code, Node *node)
{
if (Frame* frm = frame())
if (frm->scriptProxy()->isEnabled())
return frm->scriptProxy()->createHTMLEventHandler(functionName, code, node);
return 0;
}
void Document::setHTMLWindowEventListener(const AtomicString& eventType, Attribute* attr)
{
setHTMLWindowEventListener(eventType,
createHTMLEventListener(attr->localName().domString(), attr->value(), 0));
}
void Document::dispatchImageLoadEventSoon(HTMLImageLoader *image)
{
m_imageLoadEventDispatchSoonList.append(image);
if (!m_imageLoadEventTimer.isActive())
m_imageLoadEventTimer.startOneShot(0);
}
void Document::removeImage(HTMLImageLoader* image)
{
// Remove instances of this image from both lists.
// Use loops because we allow multiple instances to get into the lists.
while (m_imageLoadEventDispatchSoonList.removeRef(image)) { }
while (m_imageLoadEventDispatchingList.removeRef(image)) { }
if (m_imageLoadEventDispatchSoonList.isEmpty())
m_imageLoadEventTimer.stop();
}
void Document::dispatchImageLoadEventsNow()
{
// need to avoid re-entering this function; if new dispatches are
// scheduled before the parent finishes processing the list, they
// will set a timer and eventually be processed
if (!m_imageLoadEventDispatchingList.isEmpty()) {
return;
}
m_imageLoadEventTimer.stop();
m_imageLoadEventDispatchingList = m_imageLoadEventDispatchSoonList;
m_imageLoadEventDispatchSoonList.clear();
for (DeprecatedPtrListIterator<HTMLImageLoader> it(m_imageLoadEventDispatchingList); it.current();) {
HTMLImageLoader* image = it.current();
// Must advance iterator *before* dispatching call.
// Otherwise, it might be advanced automatically if dispatching the call had a side effect
// of destroying the current HTMLImageLoader, and then we would advance past the *next* item,
// missing one altogether.
++it;
image->dispatchLoadEvent();
}
m_imageLoadEventDispatchingList.clear();
}
void Document::imageLoadEventTimerFired(Timer<Document>*)
{
dispatchImageLoadEventsNow();
}
Element* Document::ownerElement() const
{
if (!frame())
return 0;
return frame()->ownerElement();
}
String Document::cookie() const
{
return cookies(this, url());
}
void Document::setCookie(const String& value)
{
setCookies(this, url(), policyBaseURL().deprecatedString(), value);
}
String Document::referrer() const
{
if (frame())
return frame()->loader()->referrer();
return String();
}
String Document::domain() const
{
return m_securityOrigin->host();
}
void Document::setDomain(const String& newDomain)
{
// Both NS and IE specify that changing the domain is only allowed when
// the new domain is a suffix of the old domain.
// FIXME: We should add logging indicating why a domain was not allowed.
// If the new domain is the same as the old domain, still call
// m_securityOrigin.setDomainForDOM. This will change the
// security check behavior. For example, if a page loaded on port 8000
// assigns its current domain using document.domain, the page will
// allow other pages loaded on different ports in the same domain that
// have also assigned to access this page.
if (equalIgnoringCase(domain(), newDomain)) {
m_securityOrigin->setDomainFromDOM(newDomain);
return;
}
int oldLength = domain().length();
int newLength = newDomain.length();
// e.g. newDomain = webkit.org (10) and domain() = www.webkit.org (14)
if (newLength >= oldLength)
return;
String test = domain();
// Check that it's a subdomain, not e.g. "ebkit.org"
if (test[oldLength - newLength - 1] != '.')
return;
// Now test is "webkit.org" from domain()
// and we check that it's the same thing as newDomain
test.remove(0, oldLength - newLength);
if (test != newDomain)
return;
m_securityOrigin->setDomainFromDOM(newDomain);
}
String Document::lastModified() const
{
Frame* f = frame();
if (!f)
return String();
DocumentLoader* loader = f->loader()->documentLoader();
if (!loader)
return String();
return loader->response().httpHeaderField("Last-Modified");
}
bool Document::isValidName(const String &name)
{
const UChar* s = reinterpret_cast<const UChar*>(name.characters());
unsigned length = name.length();
if (length == 0)
return false;
unsigned i = 0;
UChar32 c;
U16_NEXT(s, i, length, c)
if (!isValidNameStart(c))
return false;
while (i < length) {
U16_NEXT(s, i, length, c)
if (!isValidNamePart(c))
return false;
}
return true;
}
bool Document::parseQualifiedName(const String &qualifiedName, String &prefix, String &localName)
{
unsigned length = qualifiedName.length();
if (length == 0)
return false;
bool nameStart = true;
bool sawColon = false;
int colonPos = 0;
const UChar* s = reinterpret_cast<const UChar*>(qualifiedName.characters());
for (unsigned i = 0; i < length;) {
UChar32 c;
U16_NEXT(s, i, length, c)
if (c == ':') {
if (sawColon)
return false; // multiple colons: not allowed
nameStart = true;
sawColon = true;
colonPos = i - 1;
} else if (nameStart) {
if (!isValidNameStart(c))
return false;
nameStart = false;
} else {
if (!isValidNamePart(c))
return false;
}
}