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webkit / WebKit / 54f5ceac3cab22cffe0a8314b83761c0fef13fec / . / WebCore / dom / Document.cpp
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/**
* This file is part of the DOM implementation for KDE.
*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "Document.h"
#include "AXObjectCache.h"
#include "CDATASection.h"
#include "CSSStyleSheet.h"
#include "CSSValueKeywords.h"
#include "Comment.h"
#include "DOMImplementation.h"
#include "Decoder.h"
#include "DocLoader.h"
#include "DocumentFragment.h"
#include "DocumentType.h"
#include "EditingText.h"
#include "EntityReference.h"
#include "Event.h"
#include "EventListener.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "FrameTree.h"
#include "HTMLBodyElement.h"
#include "HTMLDocument.h"
#include "HTMLElementFactory.h"
#include "HTMLImageLoader.h"
#include "HTMLInputElement.h"
#include "HTMLLinkElement.h"
#include "HTMLMapElement.h"
#include "HTMLNameCollection.h"
#include "HTMLNames.h"
#include "HTMLStyleElement.h"
#include "JSEditor.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 "PlatformKeyboardEvent.h"
#include "ProcessingInstruction.h"
#include "RegisteredEventListener.h"
#include "RegularExpression.h"
#include "RenderArena.h"
#include "RenderView.h"
#include "RenderWidget.h"
#include "SegmentedString.h"
#include "SelectionController.h"
#include "StringHash.h"
#include "StyleSheetList.h"
#include "SystemTime.h"
#include "TextIterator.h"
#include "TreeWalker.h"
#include "UIEvent.h"
#include "csshelper.h"
#include "cssstyleselector.h"
#include "kjs_binding.h"
#include "kjs_proxy.h"
#include "XMLTokenizer.h"
#include "xmlhttprequest.h"
#ifdef XPATH_SUPPORT
#include "XPathEvaluator.h"
#include "XPathExpression.h"
#include "XPathNSResolver.h"
#include "XPathResult.h"
#endif
#ifdef KHTML_XSLT
#include "XSLTProcessor.h"
#endif
#ifndef KHTML_NO_XBL
#include "xbl_binding_manager.h"
using XBL::XBLBindingManager;
#endif
#ifdef SVG_SUPPORT
#include "SVGDocumentExtensions.h"
#include "SVGElementFactory.h"
#include "SVGZoomEvent.h"
#include "SVGStyleElement.h"
#include "KSVGTimeScheduler.h"
#endif
using namespace std;
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. :)
const int cLayoutScheduleThreshold = 250;
// Use 1 to represent the document's default form.
HTMLFormElement* const defaultForm = (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 = U_GC_LL_MASK | U_GC_LU_MASK | U_GC_LO_MASK | U_GC_LT_MASK | U_GC_NL_MASK;
if (!(U_GET_GC_MASK(c) & nameStartMask))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
UDecompositionType decompType = static_cast<UDecompositionType>(u_getIntPropertyValue(c, UCHAR_DECOMPOSITION_TYPE));
if (decompType == U_DT_FONT || decompType == U_DT_COMPAT)
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 = U_GC_MC_MASK | U_GC_ME_MASK | U_GC_MN_MASK | U_GC_LM_MASK | U_GC_ND_MASK;
if (!(U_GET_GC_MASK(c) & otherNamePartMask))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
UDecompositionType decompType = static_cast<UDecompositionType>(u_getIntPropertyValue(c, UCHAR_DECOMPOSITION_TYPE));
if (decompType == U_DT_FONT || decompType == U_DT_COMPAT)
return false;
return true;
}
DeprecatedPtrList<Document> * Document::changedDocuments = 0;
// FrameView might be 0
Document::Document(DOMImplementation* impl, FrameView *v)
: ContainerNode(0)
, m_implementation(impl)
, m_domtree_version(0)
, m_styleSheets(new StyleSheetList)
, m_title("")
, m_titleSetExplicitly(false)
, m_imageLoadEventTimer(this, &Document::imageLoadEventTimerFired)
#if !KHTML_NO_XBL
, m_bindingManager(new XBLBindingManager(this))
#endif
#ifdef KHTML_XSLT
, m_transformSource(0)
#endif
, m_savedRenderer(0)
, m_passwordFields(0)
, m_secureForms(0)
, m_designMode(inherit)
, m_selfOnlyRefCount(0)
#ifdef SVG_SUPPORT
, m_svgExtensions(0)
#endif
#if __APPLE__
, m_hasDashboardRegions(false)
, m_dashboardRegionsDirty(false)
#endif
, m_accessKeyMapValid(false)
, m_createRenderers(true)
, m_inPageCache(false)
{
m_document.resetSkippingRef(this);
m_printing = false;
m_view = v;
m_renderArena = 0;
m_axObjectCache = 0;
m_docLoader = new DocLoader(v ? v->frame() : 0, this);
visuallyOrdered = false;
m_loadingSheet = false;
m_bParsing = false;
m_docChanged = false;
m_tokenizer = 0;
pMode = Strict;
hMode = XHtml;
m_textColor = Color::black;
m_listenerTypes = 0;
m_inDocument = true;
m_styleSelectorDirty = false;
m_inStyleRecalc = false;
m_closeAfterStyleRecalc = false;
m_usesDescendantRules = false;
m_usesSiblingRules = false;
m_styleSelector = new CSSStyleSelector(this, m_usersheet, m_styleSheets.get(), !inCompatMode());
m_pendingStylesheets = 0;
m_ignorePendingStylesheets = false;
m_cssTarget = 0;
resetLinkColor();
resetVisitedLinkColor();
resetActiveLinkColor();
m_processingLoadEvent = false;
m_startTime = currentTime();
m_overMinimumLayoutThreshold = false;
m_jsEditor = 0;
static int docID = 0;
m_docID = docID++;
}
void Document::removedLastRef()
{
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_focusNode = 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;
} else
delete this;
}
Document::~Document()
{
assert(!renderer());
assert(!m_inPageCache);
assert(m_savedRenderer == 0);
#ifdef SVG_SUPPORT
delete m_svgExtensions;
#endif
XMLHttpRequest::detachRequests(this);
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;
}
#ifdef KHTML_XSLT
xmlFreeDoc((xmlDocPtr)m_transformSource);
#endif
#ifndef KHTML_NO_XBL
delete m_bindingManager;
#endif
deleteAllValues(m_markers);
if (m_axObjectCache) {
delete m_axObjectCache;
m_axObjectCache = 0;
}
m_decoder = 0;
if (m_jsEditor) {
delete m_jsEditor;
m_jsEditor = 0;
}
deleteAllValues(m_selectedRadioButtons);
}
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()
{
// 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)
{
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.impl());
}
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) {
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 != 0)
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 != 0)
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 != 0)
return 0;
newElement->appendChild(newChild.release(), ec);
if (ec != 0)
return 0;
}
}
return newElement.release();
}
case ATTRIBUTE_NODE:
case ENTITY_NODE:
case DOCUMENT_NODE:
case DOCUMENT_TYPE_NODE:
case DOCUMENT_FRAGMENT_NODE:
case NOTATION_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_specified = true;
break;
}
default:
if (source->parentNode())
source->parentNode()->removeChild(source.get(), ec);
}
for (Node* node = source.get(); node; node = node->traverseNextNode(source.get())) {
KJS::ScriptInterpreter::updateDOMNodeDocument(node, node->document(), this);
node->setDocument(this);
}
return source;
}
PassRefPtr<Element> Document::createElementNS(const String &_namespaceURI, const String &qualifiedName, ExceptionCode& ec)
{
// FIXME: We'd like a faster code path that skips this check for calls from inside the engine where the name is known to be valid.
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));
// FIXME: Use registered namespaces and look up in a hash to find the right factory.
if (_namespaceURI == xhtmlNamespaceURI) {
e = HTMLElementFactory::createHTMLElement(qName.localName(), this, 0, false);
if (e && !prefix.isNull()) {
e->setPrefix(qName.prefix(), ec);
if (ec)
return 0;
}
}
#ifdef SVG_SUPPORT
else if (_namespaceURI == SVGNames::svgNamespaceURI)
e = SVGElementFactory::createSVGElement(qName, this, false);
#endif
if (!e)
e = new Element(qName, document());
return e.release();
}
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())) {
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;
}
}
}
}
return 0;
}
String Document::readyState() const
{
if (Frame* f = frame()) {
if (f->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 (Decoder* d = decoder())
return d->encodingName();
return String();
}
String Document::defaultCharset() const
{
if (Frame* f = frame())
return f->settings()->encoding();
return String();
}
void Document::setCharset(const String& charset)
{
if (!decoder())
return;
decoder()->setEncodingName(charset.deprecatedString().ascii(), Decoder::UserChosenEncoding);
}
Element* Document::elementFromPoint(int x, int y) const
{
if (!renderer())
return 0;
RenderObject::NodeInfo nodeInfo(true, true);
renderer()->layer()->hitTest(nodeInfo, IntPoint(x, y));
Node* n = nodeInfo.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)
{
if (!m_elementsById.contains(elementId.impl()))
m_elementsById.set(elementId.impl(), element);
else
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->setTitle(m_title);
}
void Document::setTitle(const String& title, Node* titleElement)
{
if (!titleElement) {
// Title set by JavaScript -- overrides any title elements.
m_titleSetExplicitly = true;
m_titleElement = 0;
} else if (titleElement != m_titleElement) {
if (m_titleElement)
// 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();
}
void Document::removeTitle(Node* titleElement)
{
if (m_titleElement != titleElement)
return;
// FIXME: Ideally we might want this to search for the first remaining title element, and use it.
m_titleElement = 0;
if (!m_title.isEmpty()) {
m_title = "";
updateTitle();
}
}
String Document::nodeName() const
{
return "#document";
}
Node::NodeType Document::nodeType() const
{
return DOCUMENT_NODE;
}
Frame* Document::frame() const
{
return m_view ? m_view->frame() : 0;
}
PassRefPtr<Range> Document::createRange()
{
return new Range(this);
}
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow,
PassRefPtr<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,
PassRefPtr<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)
{
if (m_inStyleRecalc)
return; // Guard against re-entrancy. -dwh
m_inStyleRecalc = true;
ASSERT(!renderer() || renderArena());
if (!renderer() || !renderArena())
goto bail_out;
if (change == Force) {
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 (m_view) {
const Settings *settings = m_view->frame()->settings();
if (printing() && !settings->shouldPrintBackgrounds())
_style->setForceBackgroundsToWhite(true);
const AtomicString& stdfont = settings->stdFontName();
if (!stdfont.isEmpty()) {
fontDescription.firstFamily().setFamily(stdfont);
fontDescription.firstFamily().appendFamily(0);
}
m_styleSelector->setFontSize(fontDescription, m_styleSelector->fontSizeForKeyword(CSS_VAL_MEDIUM, inCompatMode()));
}
_style->setFontDescription(fontDescription);
_style->font().update();
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 = fastFirstChild(); n; n = n->nextSibling())
if (change >= Inherit || n->hasChangedChild() || n->changed())
n->recalcStyle(change);
if (changed() && m_view)
m_view->layout();
bail_out:
setChanged(false);
setHasChangedChild(false);
setDocumentChanged(false);
m_inStyleRecalc = false;
// If we wanted to emit the 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()
{
// 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.
if (m_view && renderer() && (m_view->layoutPending() || renderer()->needsLayout()))
m_view->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;
updateStyleSelector();
}
updateLayout();
m_ignorePendingStylesheets = oldIgnore;
}
void Document::attach()
{
assert(!attached());
assert(!m_inPageCache);
if (!m_renderArena)
m_renderArena = new RenderArena();
// Create the rendering tree
setRenderer(new (m_renderArena) RenderView(this, m_view));
recalcStyle(Force);
RenderObject* render = renderer();
setRenderer(0);
ContainerNode::attach();
setRenderer(render);
}
void Document::detach()
{
RenderObject* render = renderer();
// indicate destruction mode, i.e. attached() but renderer == 0
setRenderer(0);
if (m_inPageCache) {
if (render)
axObjectCache()->remove(render);
return;
}
// 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_focusNode = 0;
m_activeNode = 0;
ContainerNode::detach();
if (render)
render->destroy();
m_view = 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();
}
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.
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);
}
void Document::updateSelection()
{
if (!renderer())
return;
RenderView *canvas = static_cast<RenderView*>(renderer());
SelectionController s = frame()->selection();
if (!s.isRange())
canvas->clearSelection();
else {
// Use the rightmost candidate for the start of the selection, and the leftmost candidate for the end of the selection.
// Example: foo <a>bar</a>. Imagine that a line wrap occurs after 'foo', and that 'bar' is selected. If we pass [foo, 3]
// as the start of the selection, the selection painting code will think that content on the line containing 'foo' is selected
// and will fill the gap before 'bar'.
Position startPos = s.selection().visibleStart().deepEquivalent();
if (startPos.downstream().inRenderedContent())
startPos = startPos.downstream();
Position endPos = s.selection().visibleEnd().deepEquivalent();
if (endPos.upstream().inRenderedContent())
endPos = endPos.upstream();
// We can get into a state where the selection endpoints map to the same VisiblePosition when a selection is deleted
// because we don't yet notify the SelectionController of text removal.
if (startPos.isNotNull() && endPos.isNotNull() && s.selection().visibleStart() != s.selection().visibleEnd()) {
RenderObject *startRenderer = startPos.node()->renderer();
RenderObject *endRenderer = endPos.node()->renderer();
static_cast<RenderView*>(renderer())->setSelection(startRenderer, startPos.offset(), endRenderer, endPos.offset());
}
}
#if __APPLE__
// FIXME: We shouldn't post this AX notification here since updateSelection() is called far to often: every time Safari gains
// or loses focus, and once for every low level change to the selection during an editing operation.
// FIXME: We no longer blow away the selection before starting an editing operation, so the isNotNull checks below are no
// longer a correct way to check for user-level selection changes.
if (AXObjectCache::accessibilityEnabled() && s.start().isNotNull() && s.end().isNotNull()) {
axObjectCache()->postNotificationToTopWebArea(renderer(), "AXSelectedTextChanged");
}
#endif
}
Tokenizer *Document::createTokenizer()
{
return newXMLTokenizer(this, m_view);
}
void Document::open()
{
if ((frame() && frame()->isLoadingMainResource()) || (tokenizer() && tokenizer()->executingScript()))
return;
implicitOpen();
if (frame())
frame()->didExplicitOpen();
// 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.
setURL(DeprecatedString());
if (Document *parent = parentDocument())
setBaseURL(parent->baseURL());
}
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::close()
{
if (frame())
frame()->endIfNotLoading();
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()->isScheduledLocationChangePending();
bool doload = !parsing() && m_tokenizer && !m_processingLoadEvent && !wasLocationChangePending;
if (!doload)
return;
m_processingLoadEvent = true;
// 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.
// In the case of Radar 3758785, the window.onload was set in some javascript, but never fired because there was no body.
// This behavior now matches Firefox and IE.
HTMLElement *body = this->body();
if (!body && isHTMLDocument()) {
Node *de = documentElement();
if (de) {
body = new HTMLBodyElement(this);
ExceptionCode ec = 0;
de->appendChild(body, ec);
if (ec != 0)
body = 0;
}
}
dispatchImageLoadEventsNow();
this->dispatchWindowEvent(loadEvent, false, false);
if (Frame *p = frame())
p->handledOnloadEvents();
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("onload fired at %d\n", elapsedTime());
#endif
m_processingLoadEvent = false;
// 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() && frame()->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;
}
if (frame())
frame()->checkEmitLoadEvent();
// 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();
}
#if __APPLE__
if (renderer() && AXObjectCache::accessibilityEnabled())
axObjectCache()->postNotification(renderer(), "AXLoadComplete");
#endif
#ifdef SVG_SUPPORT
// 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)
{
write(text.deprecatedString());
}
void Document::write(const DeprecatedString &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(DeprecatedString("<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(String("\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();
RegisteredEventListenerList::iterator end = m_windowEventListeners.end();
for (RegisteredEventListenerList::iterator it = m_windowEventListeners.begin(); it != end; ++it)
m_windowEventListeners.remove(it);
}
void Document::setURL(const DeprecatedString& url)
{
m_url = url;
if (m_styleSelector)
m_styleSelector->setEncodedURL(m_url);
}
void Document::setStyleSheet(const String &url, const String &sheet)
{
m_sheet = new CSSStyleSheet(this, url);
m_sheet->parseString(sheet);
m_loadingSheet = false;
updateStyleSelector();
}
void Document::setUserStyleSheet(const String& sheet)
{
if (m_usersheet != sheet) {
m_usersheet = sheet;
updateStyleSelector();
}
}
CSSStyleSheet* Document::elementSheet()
{
if (!m_elemSheet)
m_elemSheet = new CSSStyleSheet(this, baseURL());
return m_elemSheet.get();
}
void Document::determineParseMode(const DeprecatedString &/*str*/)
{
// For XML documents use strict parse mode. HTML docs will override this method to
// determine their parse mode.
pMode = Strict;
hMode = XHtml;
}
Node *Document::nextFocusNode(Node *fromNode)
{
unsigned short fromTabIndex;
if (!fromNode) {
// No starting node supplied; begin with the top of the document
Node *n;
int lowestTabIndex = 65535;
for (n = this; n != 0; n = n->traverseNextNode()) {
if (n->isKeyboardFocusable()) {
if ((n->tabIndex() > 0) && (n->tabIndex() < lowestTabIndex))
lowestTabIndex = n->tabIndex();
}
}
if (lowestTabIndex == 65535)
lowestTabIndex = 0;
// Go to the first node in the document that has the desired tab index
for (n = this; n != 0; n = n->traverseNextNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() == lowestTabIndex))
return n;
}
return 0;
}
else {
fromTabIndex = fromNode->tabIndex();
}
if (fromTabIndex == 0) {
// Just need to find the next selectable node after fromNode (in document order) that doesn't have a tab index
Node *n = fromNode->traverseNextNode();
while (n && !(n->isKeyboardFocusable() && n->tabIndex() == 0))
n = n->traverseNextNode();
return n;
}
else {
// Find the lowest tab index out of all the nodes except fromNode, that is greater than or equal to fromNode's
// tab index. For nodes with the same tab index as fromNode, we are only interested in those that come after
// fromNode in document order.
// If we don't find a suitable tab index, the next focus node will be one with a tab index of 0.
unsigned short lowestSuitableTabIndex = 65535;
Node *n;
bool reachedFromNode = false;
for (n = this; n != 0; n = n->traverseNextNode()) {
if (n->isKeyboardFocusable() &&
((reachedFromNode && (n->tabIndex() >= fromTabIndex)) ||
(!reachedFromNode && (n->tabIndex() > fromTabIndex))) &&
(n->tabIndex() < lowestSuitableTabIndex) &&
(n != fromNode)) {
// We found a selectable node with a tab index at least as high as fromNode's. Keep searching though,
// as there may be another node which has a lower tab index but is still suitable for use.
lowestSuitableTabIndex = n->tabIndex();
}
if (n == fromNode)
reachedFromNode = true;
}
if (lowestSuitableTabIndex == 65535) {
// No next node with a tab index -> just take first node with tab index of 0
Node *n = this;
while (n && !(n->isKeyboardFocusable() && n->tabIndex() == 0))
n = n->traverseNextNode();
return n;
}
// Search forwards from fromNode
for (n = fromNode->traverseNextNode(); n != 0; n = n->traverseNextNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() == lowestSuitableTabIndex))
return n;
}
// The next node isn't after fromNode, start from the beginning of the document
for (n = this; n != fromNode; n = n->traverseNextNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() == lowestSuitableTabIndex))
return n;
}
assert(false); // should never get here
return 0;
}
}
Node *Document::previousFocusNode(Node *fromNode)
{
Node *lastNode = this;
while (lastNode->lastChild())
lastNode = lastNode->lastChild();
if (!fromNode) {
// No starting node supplied; begin with the very last node in the document
Node *n;
int highestTabIndex = 0;
for (n = lastNode; n != 0; n = n->traversePreviousNode()) {
if (n->isKeyboardFocusable()) {
if (n->tabIndex() == 0)
return n;
else if (n->tabIndex() > highestTabIndex)
highestTabIndex = n->tabIndex();
}
}
// No node with a tab index of 0; just go to the last node with the highest tab index
for (n = lastNode; n != 0; n = n->traversePreviousNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() == highestTabIndex))
return n;
}
return 0;
}
else {
unsigned short fromTabIndex = fromNode->tabIndex();
if (fromTabIndex == 0) {
// Find the previous selectable node before fromNode (in document order) that doesn't have a tab index
Node *n = fromNode->traversePreviousNode();
while (n && !(n->isKeyboardFocusable() && n->tabIndex() == 0))
n = n->traversePreviousNode();
if (n)
return n;
// No previous nodes with a 0 tab index, go to the last node in the document that has the highest tab index
int highestTabIndex = 0;
for (n = this; n != 0; n = n->traverseNextNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() > highestTabIndex))
highestTabIndex = n->tabIndex();
}
if (highestTabIndex == 0)
return 0;
for (n = lastNode; n != 0; n = n->traversePreviousNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() == highestTabIndex))
return n;
}
assert(false); // should never get here
return 0;
}
else {
// Find the lowest tab index out of all the nodes except fromNode, that is less than or equal to fromNode's
// tab index. For nodes with the same tab index as fromNode, we are only interested in those before
// fromNode.
// If we don't find a suitable tab index, then there will be no previous focus node.
unsigned short highestSuitableTabIndex = 0;
Node *n;
bool reachedFromNode = false;
for (n = this; n != 0; n = n->traverseNextNode()) {
if (n->isKeyboardFocusable() &&
((!reachedFromNode && (n->tabIndex() <= fromTabIndex)) ||
(reachedFromNode && (n->tabIndex() < fromTabIndex))) &&
(n->tabIndex() > highestSuitableTabIndex) &&
(n != fromNode)) {
// We found a selectable node with a tab index no higher than fromNode's. Keep searching though, as
// there may be another node which has a higher tab index but is still suitable for use.
highestSuitableTabIndex = n->tabIndex();
}
if (n == fromNode)
reachedFromNode = true;
}
if (highestSuitableTabIndex == 0) {
// No previous node with a tab index. Since the order specified by HTML is nodes with tab index > 0
// first, this means that there is no previous node.
return 0;
}
// Search backwards from fromNode
for (n = fromNode->traversePreviousNode(); n != 0; n = n->traversePreviousNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() == highestSuitableTabIndex))
return n;
}
// The previous node isn't before fromNode, start from the end of the document
for (n = lastNode; n != fromNode; n = n->traversePreviousNode()) {
if (n->isKeyboardFocusable() && (n->tabIndex() == highestSuitableTabIndex))
return n;
}
assert(false); // should never get here
return 0;
}
}
}
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")) {
// get delay and url
DeprecatedString str = content.deprecatedString().stripWhiteSpace();
int pos = str.find(RegularExpression("[;,]"));
if (pos == -1)
pos = str.find(RegularExpression("[ \t]"));
if (pos == -1) // There can be no url (David)
{
bool ok = false;
int delay = 0;
delay = str.toInt(&ok);
// We want a new history item if the refresh timeout > 1 second
if (ok && frame)
frame->scheduleRedirection(delay, frame->url().url(), delay <= 1);
} else {
double delay = 0;
bool ok = false;
delay = str.left(pos).stripWhiteSpace().toDouble(&ok);
pos++;
while(pos < (int)str.length() && str[pos].isSpace()) pos++;
str = str.mid(pos);
if (str.find("url", 0, false) == 0)
str = str.mid(3);
str = str.stripWhiteSpace();
if (str.length() && str[0] == '=')
str = str.mid(1).stripWhiteSpace();
str = parseURL(String(str)).deprecatedString();
if (ok && frame)
// We want a new history item if the refresh timeout > 1 second
frame->scheduleRedirection(delay, completeURL(str), delay <= 1);
}
} else if (equalIgnoringCase(equiv, "expires")) {
DeprecatedString str = content.deprecatedString().stripWhiteSpace();
time_t expire_date = str.toInt();
if (m_docLoader)
m_docLoader->setExpireDate(expire_date);
} else if ((equalIgnoringCase(equiv, "pragma") || equalIgnoringCase(equiv, "cache-control")) && frame) {
DeprecatedString str = content.deprecatedString().lower().stripWhiteSpace();
KURL url = frame->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);
}
}
MouseEventWithHitTestResults Document::prepareMouseEvent(bool readonly, bool active, bool mouseMove,
const IntPoint& point, const PlatformMouseEvent& event)
{
if (!renderer())
return MouseEventWithHitTestResults(event, 0, false);
assert(renderer()->isRenderView());
RenderObject::NodeInfo renderInfo(readonly, active, mouseMove);
renderer()->layer()->hitTest(renderInfo, point);
if (!readonly)
updateRendering();
bool isOverLink = renderInfo.URLElement() && !renderInfo.URLElement()->getAttribute(hrefAttr).isNull();
return MouseEventWithHitTestResults(event, renderInfo.innerNode(), isOverLink);
}
// 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;
}
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::stylesheetLoaded()
{
// 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();
}
void Document::updateStyleSelector()
{
// Don't bother updating, since we haven't loaded all our style info yet.
if (!haveStylesheetsLoaded())
return;
#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()->setNeedsLayoutAndMinMaxRecalc();
if (view())
view()->scheduleRelayout();
}
}
DeprecatedStringList Document::availableStyleSheets() const
{
return m_availableSheets;
}
void Document::recalcStyleSelector()
{
if (!renderer() || !attached())
return;
DeprecatedPtrList<StyleSheet> oldStyleSheets = m_styleSheets->styleSheets;
m_styleSheets->styleSheets.clear();
m_availableSheets.clear();
Node *n;
for (n = this; 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();
#ifdef KHTML_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("");
Node *c;
for (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->setStyleSheet(cssSheet);
sheet = cssSheet;
}
}
}
else if (n->isHTMLElement() && (n->hasTagName(linkTag) || n->hasTagName(styleTag))) {
HTMLElement *e = static_cast<HTMLElement *>(n);
DeprecatedString title = e->getAttribute(titleAttr).deprecatedString();
bool enabledViaScript = false;
if (e->hasLocalName(linkTag)) {
// <LINK> element
HTMLLinkElement* l = static_cast<HTMLLinkElement*>(n);
if (l->isLoading() || l->isDisabled())
continue;
if (!l->sheet())
title = DeprecatedString::null;
enabledViaScript = l->isEnabledViaScript();
}
// Get the current preferred styleset. This is the
// set of sheets that will be enabled.
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.
DeprecatedString rel = e->getAttribute(relAttr).deprecatedString();
if (e->hasLocalName(styleTag) || !rel.contains("alternate"))
m_preferredStylesheetSet = m_selectedStylesheetSet = title;
}
if (!m_availableSheets.contains(title))
m_availableSheets.append(title);
if (title != m_preferredStylesheetSet)
sheet = 0;
}
}
#ifdef SVG_SUPPORT
else if (n->isSVGElement() && n->hasTagName(SVGNames::styleTag)) {
DeprecatedString title;
// <STYLE> element
SVGStyleElement *s = static_cast<SVGStyleElement*>(n);
if (!s->isLoading()) {
sheet = s->sheet();
if(sheet)
title = s->getAttribute(SVGNames::titleAttr).deprecatedString();
}
if (!title.isEmpty() && m_preferredStylesheetSet.isEmpty())
m_preferredStylesheetSet = m_selectedStylesheetSet = title;
if (!title.isEmpty()) {
if (title != m_preferredStylesheetSet)
sheet = 0; // don't use it
title = title.replace('&', "&&");
if (!m_availableSheets.contains(title))
m_availableSheets.append(title);
}
}
#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;
String usersheet = m_usersheet;
if (m_view && m_view->mediaType() == "print")
usersheet += m_printSheet;
m_styleSelector = new CSSStyleSelector(this, usersheet, m_styleSheets.get(), !inCompatMode());
m_styleSelector->setEncodedURL(m_url);
m_styleSelectorDirty = false;
}
void Document::setHoverNode(PassRefPtr<Node> newHoverNode)
{
m_hoverNode = newHoverNode;
}
void Document::setActiveNode(PassRefPtr<Node> newActiveNode)
{
m_activeNode = newActiveNode;
}
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 (view())
view()->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();
}
bool Document::relinquishesEditingFocus(Node *node)
{
assert(node);
assert(node->isContentEditable());
Node *root = node->rootEditableElement();
if (!frame() || !root)
return false;
return frame()->shouldEndEditing(rangeOfContents(root).get());
}
bool Document::acceptsEditingFocus(Node *node)
{
assert(node);
assert(node->isContentEditable());
Node *root = node->rootEditableElement();
if (!frame() || !root)
return false;
return frame()->shouldBeginEditing(rangeOfContents(root).get());
}
void Document::didBeginEditing()
{
if (!frame())
return;
frame()->didBeginEditing();
}
void Document::didEndEditing()
{
if (!frame())
return;
frame()->didEndEditing();
}
#if __APPLE__
const DeprecatedValueList<DashboardRegionValue> & Document::dashboardRegions() const
{
return m_dashboardRegions;
}
void Document::setDashboardRegions (const DeprecatedValueList<DashboardRegionValue>& regions)
{
m_dashboardRegions = regions;
setDashboardRegionsDirty (false);
}
#endif
static Widget *widgetForNode(Node *focusNode)
{
if (!focusNode)
return 0;
RenderObject *renderer = focusNode->renderer();
if (!renderer || !renderer->isWidget())
return 0;
return static_cast<RenderWidget*>(renderer)->widget();
}
bool Document::setFocusNode(PassRefPtr<Node> newFocusNode)
{
// Make sure newFocusNode is actually in this document
if (newFocusNode && (newFocusNode->document() != this))
return true;
if (m_focusNode == newFocusNode)
return true;
if (m_focusNode && m_focusNode.get() == m_focusNode->rootEditableElement() && !relinquishesEditingFocus(m_focusNode.get()))
return false;
bool focusChangeBlocked = false;
RefPtr<Node> oldFocusNode = m_focusNode;
m_focusNode = 0;
clearSelectionIfNeeded(newFocusNode.get());
// Remove focus from the existing focus node (if any)
if (oldFocusNode && !oldFocusNode->m_inDetach) {
if (oldFocusNode->active())
oldFocusNode->setActive(false);
oldFocusNode->setFocus(false);
// Dispatch a change event for text fields or textareas that have been edited
RenderObject *r = static_cast<RenderObject*>(oldFocusNode.get()->renderer());
if (r && (r->isTextArea() || r->isTextField()) && r->isEdited()) {
EventTargetNodeCast(oldFocusNode.get())->dispatchHTMLEvent(changeEvent, true, false);
if ((r = static_cast<RenderObject*>(oldFocusNode.get()->renderer())))
r->setEdited(false);
}
// Dispatch the blur event and let the node do any other blur related activities (important for text fields)
EventTargetNodeCast(oldFocusNode.get())->dispatchBlurEvent();
if (m_focusNode) {
// handler shifted focus
focusChangeBlocked = true;
newFocusNode = 0;
}
clearSelectionIfNeeded(newFocusNode.get());
EventTargetNodeCast(oldFocusNode.get())->dispatchUIEvent(DOMFocusOutEvent);
if (m_focusNode) {
// handler shifted focus
focusChangeBlocked = true;
newFocusNode = 0;
}
clearSelectionIfNeeded(newFocusNode.get());
if ((oldFocusNode.get() == this) && oldFocusNode->hasOneRef())
return true;
if (oldFocusNode.get() == oldFocusNode->rootEditableElement())
didEndEditing();
}
if (newFocusNode) {
if (newFocusNode == newFocusNode->rootEditableElement() && !acceptsEditingFocus(newFocusNode.get())) {
// delegate blocks focus change
focusChangeBlocked = true;
goto SetFocusNodeDone;
}
// Set focus on the new node
m_focusNode = newFocusNode.get();
// Dispatch the focus event and let the node do any other focus related activities (important for text fields)
EventTargetNodeCast(m_focusNode.get())->dispatchFocusEvent();
if (m_focusNode != newFocusNode) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusNodeDone;
}
EventTargetNodeCast(m_focusNode.get())->dispatchUIEvent(DOMFocusInEvent);
if (m_focusNode != newFocusNode) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusNodeDone;
}
m_focusNode->setFocus();
if (m_focusNode.get() == m_focusNode->rootEditableElement())
didBeginEditing();
// eww, I suck. set the qt focus correctly
// ### find a better place in the code for this
if (view()) {
Widget *focusWidget = widgetForNode(m_focusNode.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_focusNode.get());
}
if (focusWidget)
focusWidget->setFocus();
else
view()->setFocus();
}
}
#if __APPLE__
if (!focusChangeBlocked && m_focusNode && AXObjectCache::accessibilityEnabled())
axObjectCache()->handleFocusedUIElementChanged();
#endif
SetFocusNodeDone:
updateRendering();
return !focusChangeBlocked;
}
void Document::clearSelectionIfNeeded(Node *newFocusNode)
{
if (!frame())
return;
// Clear the selection when changing the focus node to null or to a node that is not
// contained by the current selection.
Node *startContainer = frame()->selection().start().node();
if (!newFocusNode || (startContainer && startContainer != newFocusNode && !(startContainer->isAncestor(newFocusNode)) && startContainer->shadowAncestorNode() != newFocusNode))
// FIXME: 6498 Should just be able to call m_frame->selection().clear()
frame()->setSelection(SelectionController());
}
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.append(ni);
}
void Document::detachNodeIterator(NodeIterator *ni)
{
m_nodeIterators.remove(ni);
}
void Document::notifyBeforeNodeRemoval(Node *n)
{
if (Frame* f = frame()) {
f->selection().nodeWillBeRemoved(n);
f->dragCaret().nodeWillBeRemoved(n);
}
DeprecatedPtrListIterator<NodeIterator> it(m_nodeIterators);
for (; it.current(); ++it)
it.current()->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();
#ifdef SVG_SUPPORT
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::defaultEventHandler(Event *evt)
{
// handle accesskey
if (evt->type() == keydownEvent) {
KeyboardEvent* kevt = static_cast<KeyboardEvent *>(evt);
if (kevt->ctrlKey()) {
const PlatformKeyboardEvent* ev = kevt->keyEvent();
String key = (ev ? ev->unmodifiedText() : kevt->keyIdentifier()).lower();
Element* elem = getElementByAccessKey(key);
if (elem) {
elem->accessKeyAction(false);
evt->setDefaultHandled();
}
}
}
}
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 (KJSProxy* proxy = frm->jScript())
return proxy->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::referrer() const
{
if (frame())
return frame()->incomingReferrer();
return String();
}
String Document::domain() const
{
if (m_domain.isEmpty()) // not set yet (we set it on demand to save time and space)
m_domain = KURL(URL()).host(); // Initially set to the host
return m_domain;
}
void Document::setDomain(const String &newDomain, bool force /*=false*/)
{
if (force) {
m_domain = newDomain;
return;
}
if (m_domain.isEmpty()) // not set yet (we set it on demand to save time and space)
m_domain = KURL(URL()).host(); // Initially set to the host
// Both NS and IE specify that changing the domain is only allowed when
// the new domain is a suffix of the old domain.
int oldLength = m_domain.length();
int newLength = newDomain.length();
if (newLength < oldLength) // e.g. newDomain=kde.org (7) and m_domain=www.kde.org (11)
{
String test = m_domain.copy();
if (test[oldLength - newLength - 1] == '.') // Check that it's a subdomain, not e.g. "de.org"
{
test.remove(0, oldLength - newLength); // now test is "kde.org" from m_domain
if (test == newDomain) // and we check that it's the same thing as newDomain
m_domain = newDomain;
}
}
}
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;
}
}
if (!sawColon) {
prefix = String();
localName = qualifiedName.copy();
} else {
prefix = qualifiedName.substring(0, colonPos);
localName = qualifiedName.substring(colonPos + 1, length - (colonPos + 1));
}
return true;
}
void Document::addImageMap(HTMLMapElement* imageMap)
{
// Add the image map, unless there's already another with that name.
// "First map wins" is the rule other browsers seem to implement.
m_imageMapsByName.add(imageMap->getName().impl(), imageMap);
}
void Document::removeImageMap(HTMLMapElement* imageMap)
{
// Remove the image map by name.
// But don't remove some other image map that just happens to have the same name.
// FIXME: Use a HashCountedSet as we do for IDs to find the first remaining map
// once a map has been removed.
const AtomicString& name = imageMap->getName();
ImageMapsByName::iterator it = m_imageMapsByName.find(name.impl());
if (it != m_imageMapsByName.end() && it->second == imageMap)
m_imageMapsByName.remove(it);
}
HTMLMapElement *Document::getImageMap(const String& URL) const
{
if (URL.isNull())
return 0;
int hashPos = URL.find('#');
AtomicString name = (hashPos < 0 ? URL : URL.substring(hashPos + 1)).impl();
return m_imageMapsByName.get(name.impl());
}
void Document::setDecoder(Decoder *decoder)
{
m_decoder = decoder;
}
UChar Document::backslashAsCurrencySymbol() const
{
if (!m_decoder)
return '\\';
return m_decoder->encoding().backslashAsCurrencySymbol();
}
DeprecatedString Document::completeURL(const DeprecatedString &URL)
{
// If both the URL and base URL are empty, like they are for documents
// created using DOMImplementation::createDocument, just return the passed in URL.
// (We do this because URL() returns "about:blank" for empty URLs.
if (m_url.isEmpty() && m_baseURL.isEmpty())
return URL;
if (!m_decoder)
return KURL(baseURL(), URL).url();
return KURL(baseURL(), URL, m_decoder->encoding()).url();
}
String Document::completeURL(const String &URL)
{
if (URL.isNull())
return URL;
return completeURL(URL.deprecatedString());
}
bool Document::inPageCache()
{
return m_inPageCache;
}
void Document::setInPageCache(bool flag)
{
if (m_inPageCache == flag)
return;
m_inPageCache = flag;
if (flag) {
ASSERT(m_savedRenderer == 0);
m_savedRenderer = renderer();
if (m_view)
m_view->resetScrollBars();
} else {
ASSERT(renderer() == 0 || renderer() == m_savedRenderer);
ASSERT(m_renderArena);
setRenderer(m_savedRenderer);
m_savedRenderer = 0;
}
}
void Document::passwordFieldAdded()
{
m_passwordFields++;
}
void Document::passwordFieldRemoved()
{
assert(m_passwordFields > 0);
m_passwordFields--;
}
bool Document::hasPasswordField() const
{
return m_passwordFields > 0;
}
void Document::secureFormAdded()
{
m_secureForms++;
}
void Document::secureFormRemoved()
{
assert(m_secureForms > 0);
m_secureForms--;
}
bool Document::hasSecureForm() const
{
return m_secureForms > 0;
}
void Document::setShouldCreateRenderers(bool f)
{
m_createRenderers = f;
}
bool Document::shouldCreateRenderers()
{
return m_createRenderers;
}
String Document::toString() const
{
String result;
for (Node *child = firstChild(); child != NULL; child = child->nextSibling()) {
result += child->toString();
}
return result;
}
// Support for Javascript execCommand, and related methods
JSEditor *Document::jsEditor()
{
if (!m_jsEditor)
m_jsEditor = new JSEditor(this);
return m_jsEditor;
}
bool Document::execCommand(const String &command, bool userInterface, const String &value)
{
return jsEditor()->execCommand(command, userInterface, value);
}
bool Document::queryCommandEnabled(const String &command)
{
return jsEditor()->queryCommandEnabled(command);
}
bool Document::queryCommandIndeterm(const String &command)
{
return jsEditor()->queryCommandIndeterm(command);
}
bool Document::queryCommandState(const String &command)
{
return jsEditor()->queryCommandState(command);
}
bool Document::queryCommandSupported(const String &command)
{
return jsEditor()->queryCommandSupported(command);
}
String Document::queryCommandValue(const String &command)
{
return jsEditor()->queryCommandValue(command);
}
static IntRect placeholderRectForMarker(void)
{
return IntRect(-1,-1,-1,-1);
}
void Document::addMarker(Range *range, DocumentMarker::MarkerType type)
{
// Use a TextIterator to visit the potentially multiple nodes the range covers.
for (TextIterator markedText(range); !markedText.atEnd(); markedText.advance()) {
RefPtr<Range> textPiece = markedText.range();
int exception = 0;
DocumentMarker marker = {type, textPiece->startOffset(exception), textPiece->endOffset(exception)};
addMarker(textPiece->startContainer(exception), marker);
}
}
void Document::removeMarkers(Range *range, DocumentMarker::MarkerType markerType)
{
// Use a TextIterator to visit the potentially multiple nodes the range covers.
for (TextIterator markedText(range); !markedText.atEnd(); markedText.advance()) {
RefPtr<Range> textPiece = markedText.range();
int exception = 0;
unsigned startOffset = textPiece->startOffset(exception);
unsigned length = textPiece->endOffset(exception) - startOffset + 1;
removeMarkers(textPiece->startContainer(exception), startOffset, length, markerType);
}
}
// Markers are stored in order sorted by their location. They do not overlap each other, as currently
// required by the drawing code in RenderText.cpp.
void Document::addMarker(Node *node, DocumentMarker newMarker)
{
assert(newMarker.endOffset >= newMarker.startOffset);
if (newMarker.endOffset == newMarker.startOffset)
return;
MarkerMapVectorPair* vectorPair = m_markers.get(node);
if (!vectorPair) {
vectorPair = new MarkerMapVectorPair;
vectorPair->first.append(newMarker);
vectorPair->second.append(placeholderRectForMarker());
m_markers.set(node, vectorPair);
} else {
Vector<DocumentMarker>& markers = vectorPair->first;
Vector<IntRect>& rects = vectorPair->second;
ASSERT(markers.size() == rects.size());
Vector<DocumentMarker>::iterator it;
for (it = markers.begin(); it != markers.end();) {
DocumentMarker marker = *it;
if (newMarker.endOffset < marker.startOffset+1) {
// This is the first marker that is completely after newMarker, and disjoint from it.
// We found our insertion point.
break;
} else if (newMarker.startOffset > marker.endOffset) {
// maker is before newMarker, and disjoint from it. Keep scanning.
it++;
} else if (newMarker == marker) {
// already have this one, NOP
return;
} else {
// marker and newMarker intersect or touch - merge them into newMarker
newMarker.startOffset = min(newMarker.startOffset, marker.startOffset);
newMarker.endOffset = max(newMarker.endOffset, marker.endOffset);
// remove old one, we'll add newMarker later
unsigned removalIndex = it - markers.begin();
markers.remove(removalIndex);
rects.remove(removalIndex);
// it points to the next marker to consider
}
}
// at this point it points to the node before which we want to insert
unsigned insertionIndex = it - markers.begin();
markers.insert(insertionIndex, newMarker);
rects.insert(insertionIndex, placeholderRectForMarker());
}
// repaint the affected node
if (node->renderer())
node->renderer()->repaint();
}
// copies markers from srcNode to dstNode, applying the specified shift delta to the copies. The shift is
// useful if, e.g., the caller has created the dstNode from a non-prefix substring of the srcNode.
void Document::copyMarkers(Node *srcNode, unsigned startOffset, int length, Node *dstNode, int delta, DocumentMarker::MarkerType markerType)
{
if (length <= 0)
return;
MarkerMapVectorPair* vectorPair = m_markers.get(srcNode);
if (!vectorPair)
return;
ASSERT(vectorPair->first.size() == vectorPair->second.size());
bool docDirty = false;
unsigned endOffset = startOffset + length - 1;
Vector<DocumentMarker>::iterator it;
Vector<DocumentMarker>& markers = vectorPair->first;
for (it = markers.begin(); it != markers.end(); ++it) {
DocumentMarker marker = *it;
// stop if we are now past the specified range
if (marker.startOffset > endOffset)
break;
// skip marker that is before the specified range or is the wrong type
if (marker.endOffset < startOffset || (marker.type != markerType && markerType != DocumentMarker::AllMarkers))
continue;
// pin the marker to the specified range and apply the shift delta
docDirty = true;
if (marker.startOffset < startOffset)
marker.startOffset = startOffset;
if (marker.endOffset > endOffset)
marker.endOffset = endOffset;
marker.startOffset += delta;
marker.endOffset += delta;
addMarker(dstNode, marker);
}
// repaint the affected node
if (docDirty && dstNode->renderer())
dstNode->renderer()->repaint();
}
void Document::removeMarkers(Node *node, unsigned startOffset, int length, DocumentMarker::MarkerType markerType)
{
if (length <= 0)
return;
MarkerMapVectorPair* vectorPair = m_markers.get(node);
if (!vectorPair)
return;
Vector<DocumentMarker>& markers = vectorPair->first;
Vector<IntRect>& rects = vectorPair->second;
ASSERT(markers.size() == rects.size());
bool docDirty = false;
unsigned endOffset = startOffset + length - 1;
Vector<DocumentMarker>::iterator it;
for (it = markers.begin(); it < markers.end();) {
DocumentMarker marker = *it;
// markers are returned in order, so stop if we are now past the specified range
if (marker.startOffset > endOffset)
break;
// skip marker that is wrong type or before target
if (marker.endOffset < startOffset || (marker.type != markerType && markerType != DocumentMarker::AllMarkers)) {
it++;
continue;
}
// at this point we know that marker and target intersect in some way
docDirty = true;
// pitch the old marker and any associated rect
unsigned removalIndex = it - markers.begin();
markers.remove(removalIndex);
rects.remove(removalIndex);
// it now points to the next node
// add either of the resulting slices that are left after removing target
if (startOffset > marker.startOffset) {
DocumentMarker newLeft = marker;
newLeft.endOffset = startOffset;
unsigned insertionIndex = it - markers.begin();
markers.insert(insertionIndex, newLeft);
rects.insert(insertionIndex, placeholderRectForMarker());
// it now points to the newly-inserted node, but we want to skip that one
it++;
}
if (marker.endOffset > endOffset) {
DocumentMarker newRight = marker;
newRight.startOffset = endOffset;
unsigned insertionIndex = it - markers.begin();
markers.insert(insertionIndex, newRight);
rects.insert(insertionIndex, placeholderRectForMarker());
// it now points to the newly-inserted node, but we want to skip that one
it++;
}
}
if (markers.isEmpty()) {
ASSERT(rects.isEmpty());
m_markers.remove(node);
delete vectorPair;
}
// repaint the affected node
if (docDirty && node->renderer())
node->renderer()->repaint();
}
Vector<DocumentMarker> Document::markersForNode(Node* node)
{
MarkerMapVectorPair* vectorPair = m_markers.get(node);
if (vectorPair)
return vectorPair->first;
return Vector<DocumentMarker>();
}
Vector<IntRect> Document::renderedRectsForMarkers(DocumentMarker::MarkerType markerType)
{
Vector<IntRect> result;
// outer loop: process each node
MarkerMap::iterator end = m_markers.end();
for (MarkerMap::iterator nodeIterator = m_markers.begin(); nodeIterator != end; ++nodeIterator) {
// inner loop; process each marker in this node
MarkerMapVectorPair* vectorPair = nodeIterator->second;
Vector<DocumentMarker>& markers = vectorPair->first;
Vector<IntRect>& rects = vectorPair->second;
ASSERT(markers.size() == rects.size());
unsigned markerCount = markers.size();
for (unsigned markerIndex = 0; markerIndex < markerCount; ++markerIndex) {
DocumentMarker marker = markers[markerIndex];
// skip marker that is wrong type
if (marker.type != markerType && markerType != DocumentMarker::AllMarkers)
continue;
IntRect r = rects[markerIndex];
// skip placeholder rects
if (r == placeholderRectForMarker())
continue;
result.append(r);
}
}
return result;
}
void Document::removeMarkers(Node* node)
{
MarkerMap::iterator i = m_markers.find(node);
if (i != m_markers.end()) {
delete i->second;
m_markers.remove(i);
if (RenderObject* renderer = node->renderer())
renderer->repaint();
}
}
void Document::removeMarkers(DocumentMarker::MarkerType markerType)
{
// outer loop: process each markered node in the document
MarkerMap markerMapCopy = m_markers;
MarkerMap::iterator end = markerMapCopy.end();
for (MarkerMap::iterator i = markerMapCopy.begin(); i != end; ++i) {
Node* node = i->first.get();
bool nodeNeedsRepaint = false;
// inner loop: process each marker in the current node
MarkerMapVectorPair* vectorPair = i->second;
Vector<DocumentMarker>& markers = vectorPair->first;
Vector<IntRect>& rects = vectorPair->second;
ASSERT(markers.size() == rects.size());
Vector<DocumentMarker>::iterator markerIterator;
for (markerIterator = markers.begin(); markerIterator != markers.end();) {
DocumentMarker marker = *markerIterator;
// skip nodes that are not of the specified type
if (marker.type != markerType && markerType != DocumentMarker::AllMarkers) {
++markerIterator;
continue;
}
// pitch the old marker
markers.remove(markerIterator - markers.begin());
rects.remove(markerIterator - markers.begin());
nodeNeedsRepaint = true;
// markerIterator now points to the next node
}
// Redraw the node if it changed. Do this before the node is removed from m_markers, since
// m_markers might contain the last reference to the node.
if (nodeNeedsRepaint) {
RenderObject* renderer = node->renderer();
if (renderer)
renderer->repaint();
}
// delete the node's list if it is now empty
if (markers.isEmpty()) {
ASSERT(rects.isEmpty());
m_markers.remove(node);
delete vectorPair;
}
}
}
void Document::repaintMarkers(DocumentMarker::MarkerType markerType)
{
// outer loop: process each markered node in the document
MarkerMap::iterator end = m_markers.end();
for (MarkerMap::iterator i = m_markers.begin(); i != end; ++i) {
Node* node = i->first.get();
// inner loop: process each marker in the current node
MarkerMapVectorPair* vectorPair = i->second;
Vector<DocumentMarker>& markers = vectorPair->first;
Vector<DocumentMarker>::iterator markerIterator;
bool nodeNeedsRepaint = false;
for (markerIterator = markers.begin(); markerIterator != markers.end(); ++markerIterator) {
DocumentMarker marker = *markerIterator;
// skip nodes that are not of the specified type
if (marker.type == markerType || markerType == DocumentMarker::AllMarkers) {
nodeNeedsRepaint = true;
break;
}
}
if (!nodeNeedsRepaint)
continue;
// cause the node to be redrawn
if (RenderObject* renderer = node->renderer())
renderer->repaint();
}
}
void Document::setRenderedRectForMarker(Node* node, DocumentMarker marker, const IntRect& r)
{
MarkerMapVectorPair* vectorPair = m_markers.get(node);
if (!vectorPair) {
ASSERT_NOT_REACHED(); // shouldn't be trying to set the rect for a marker we don't already know about
return;
}
Vector<DocumentMarker>& markers = vectorPair->first;
ASSERT(markers.size() == vectorPair->second.size());
unsigned markerCount = markers.size();
for (unsigned markerIndex = 0; markerIndex < markerCount; ++markerIndex) {
DocumentMarker m = markers[markerIndex];
if (m == marker) {
vectorPair->second[markerIndex] = r;
return;
}
}
ASSERT_NOT_REACHED(); // shouldn't be trying to set the rect for a marker we don't already know about
}
void Document::invalidateRenderedRectsForMarkersInRect(const IntRect& r)
{
// outer loop: process each markered node in the document
MarkerMap::iterator end = m_markers.end();
for (MarkerMap::iterator i = m_markers.begin(); i != end; ++i) {
// inner loop: process each rect in the current node
MarkerMapVectorPair* vectorPair = i->second;
Vector<IntRect>& rects = vectorPair->second;
unsigned rectCount = rects.size();
for (unsigned rectIndex = 0; rectIndex < rectCount; ++rectIndex)
if (rects[rectIndex].intersects(r))
rects[rectIndex] = placeholderRectForMarker();
}
}
void Document::shiftMarkers(Node *node, unsigned startOffset, int delta, DocumentMarker::MarkerType markerType)
{
MarkerMapVectorPair* vectorPair = m_markers.get(node);
if (!vectorPair)
return;
Vector<DocumentMarker>& markers = vectorPair->first;
Vector<IntRect>& rects = vectorPair->second;
ASSERT(markers.size() == rects.size());
bool docDirty = false;
Vector<DocumentMarker>::iterator it;
for (it = markers.begin(); it != markers.end(); ++it) {
DocumentMarker &marker = *it;
if (marker.startOffset >= startOffset && (markerType == DocumentMarker::AllMarkers || marker.type == markerType)) {
assert((int)marker.startOffset + delta >= 0);
marker.startOffset += delta;
marker.endOffset += delta;
docDirty = true;
// Marker moved, so previously-computed rendered rectangle is now invalid
rects[it - markers.begin()] = placeholderRectForMarker();
}
}
// repaint the affected node
if (docDirty && node->renderer())
node->renderer()->repaint();
}
#ifdef KHTML_XSLT
void Document::applyXSLTransform(ProcessingInstruction* pi)
{
RefPtr<XSLTProcessor> processor = new XSLTProcessor;
processor->setXSLStylesheet(static_cast<XSLStyleSheet*>(pi->sheet()));
DeprecatedString resultMIMEType;
DeprecatedString newSource;
DeprecatedString resultEncoding;
if (!processor->transformToString(this, resultMIMEType, newSource, resultEncoding))
return;
// FIXME: If the transform failed we should probably report an error (like Mozilla does).
processor->createDocumentFromSource(newSource, resultEncoding, resultMIMEType, this, view());
}
#endif
void Document::setDesignMode(InheritedBool value)
{
m_designMode = value;
}
Document::InheritedBool Document::getDesignMode() const
{
return m_designMode;
}
bool Document::inDesignMode() const
{
for (const Document* d = this; d; d = d->parentDocument()) {
if (d->m_designMode != inherit)
return d->m_designMode;
}
return false;
}
Document *Document::parentDocument() const
{
Frame *childPart = frame();
if (!childPart)
return 0;
Frame *parent = childPart->tree()->parent();
if (!parent)
return 0;
return parent->document();
}
Document *Document::topDocument() const
{
Document *doc = const_cast<Document *>(this);
Element *element;
while ((element = doc->ownerElement()) != 0)
doc = element->document();
return doc;
}
PassRefPtr<Attr> Document::createAttributeNS(const String &namespaceURI, const String &qualifiedName, ExceptionCode& ec)
{
if (qualifiedName.isNull()) {
ec = NAMESPACE_ERR;
return 0;
}
String localName = qualifiedName;
String prefix;
int colonpos;
if ((colonpos = qualifiedName.find(':')) >= 0) {
prefix = qualifiedName.copy();
localName = qualifiedName.copy();
prefix.truncate(colonpos);
localName.remove(0, colonpos+1);
}
if (!isValidName(localName)) {
ec = INVALID_CHARACTER_ERR;
return 0;
}
// FIXME: Assume this is a mapped attribute, since createAttribute isn't namespace-aware. There's no harm to XML
// documents if we're wrong.
return new Attr(0, this, new MappedAttribute(QualifiedName(prefix.impl(),
localName.impl(),
namespaceURI.impl()), String("").impl()));
}
#ifdef SVG_SUPPORT
const SVGDocumentExtensions* Document::svgExtensions()
{
return m_svgExtensions;
}
SVGDocumentExtensions* Document::accessSVGExtensions()
{
if (!m_svgExtensions)
m_svgExtensions = new SVGDocumentExtensions(this);
return m_svgExtensions;
}
#endif
void Document::radioButtonChecked(HTMLInputElement *caller, HTMLFormElement *form)
{
// Without a name, there is no group.
if (caller->name().isEmpty())
return;
if (!form)
form = defaultForm;
// Uncheck the currently selected item
NameToInputMap* formRadioButtons = m_selectedRadioButtons.get(form);
if (!formRadioButtons) {
formRadioButtons = new NameToInputMap;
m_selectedRadioButtons.set(form, formRadioButtons);
}
HTMLInputElement* currentCheckedRadio = formRadioButtons->get(caller->name().impl());
if (currentCheckedRadio && currentCheckedRadio != caller)
currentCheckedRadio->setChecked(false);
formRadioButtons->set(caller->name().impl(), caller);
}
HTMLInputElement* Document::checkedRadioButtonForGroup(AtomicStringImpl* name, HTMLFormElement *form)
{
if (!form)
form = defaultForm;
NameToInputMap* formRadioButtons = m_selectedRadioButtons.get(form);
if (!formRadioButtons)
return 0;
return formRadioButtons->get(name);
}
void Document::removeRadioButtonGroup(AtomicStringImpl* name, HTMLFormElement *form)
{
if (!form)
form = defaultForm;
NameToInputMap* formRadioButtons = m_selectedRadioButtons.get(form);
if (formRadioButtons) {
formRadioButtons->remove(name);
if (formRadioButtons->isEmpty()) {
m_selectedRadioButtons.remove(form);
delete formRadioButtons;
}
}
}
PassRefPtr<HTMLCollection> Document::images()
{
return new HTMLCollection(this, HTMLCollection::DocImages);
}
PassRefPtr<HTMLCollection> Document::applets()
{
return new HTMLCollection(this, HTMLCollection::DocApplets);
}
PassRefPtr<HTMLCollection> Document::embeds()
{
return new HTMLCollection(this, HTMLCollection::DocEmbeds);
}
PassRefPtr<HTMLCollection> Document::objects()
{
return new HTMLCollection(this, HTMLCollection::DocObjects);
}
PassRefPtr<HTMLCollection> Document::scripts()
{
return new HTMLCollection(this, HTMLCollection::DocScripts);
}
PassRefPtr<HTMLCollection> Document::links()
{
return new HTMLCollection(this, HTMLCollection::DocLinks);
}
PassRefPtr<HTMLCollection> Document::forms()
{
return new HTMLCollection(this, HTMLCollection::DocForms);
}
PassRefPtr<HTMLCollection> Document::anchors()
{
return new HTMLCollection(this, HTMLCollection::DocAnchors);
}
PassRefPtr<HTMLCollection> Document::all()
{
return new HTMLCollection(this, HTMLCollection::DocAll);
}
PassRefPtr<HTMLCollection> Document::windowNamedItems(const String &name)
{
return new HTMLNameCollection(this, HTMLCollection::WindowNamedItems, name);
}
PassRefPtr<HTMLCollection> Document::documentNamedItems(const String &name)
{
return new HTMLNameCollection(this, HTMLCollection::DocumentNamedItems, name);
}
HTMLCollection::CollectionInfo* Document::nameCollectionInfo(HTMLCollection::Type type, const String& name)
{
HashMap<AtomicStringImpl*, HTMLCollection::CollectionInfo>& map = m_nameCollectionInfo[type - HTMLCollection::UnnamedCollectionTypes];
AtomicString atomicName(name);
HashMap<AtomicStringImpl*, HTMLCollection::CollectionInfo>::iterator iter = map.find(atomicName.impl());
if (iter == map.end())
iter = map.add(atomicName.impl(), HTMLCollection::CollectionInfo()).first;
return &iter->second;
}
PassRefPtr<NameNodeList> Document::getElementsByName(const String &elementName)
{
return new NameNodeList(this, elementName);
}
void Document::finishedParsing()
{
setParsing(false);
if (Frame* f = frame())
f->finishedParsing();
}
Vector<String> Document::formElementsState() const
{
Vector<String> stateVector;
stateVector.reserveCapacity(m_formElementsWithState.size() * 3);
typedef HashSet<HTMLGenericFormElement*>::const_iterator Iterator;
Iterator end = m_formElementsWithState.end();
for (Iterator it = m_formElementsWithState.begin(); it != end; ++it) {
HTMLGenericFormElement* e = *it;
stateVector.append(e->name().domString());
stateVector.append(e->type().domString());
stateVector.append(e->stateValue());
}
return stateVector;
}
#ifdef XPATH_SUPPORT
PassRefPtr<XPathExpression> Document::createExpression(const String& expression,
XPathNSResolver* resolver,
ExceptionCode& ec)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = new XPathEvaluator;
return m_xpathEvaluator->createExpression(expression, resolver, ec);
}
PassRefPtr<XPathNSResolver> Document::createNSResolver(Node* nodeResolver)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = new XPathEvaluator;
return m_xpathEvaluator->createNSResolver(nodeResolver);
}
PassRefPtr<XPathResult> Document::evaluate(const String& expression,
Node* contextNode,
XPathNSResolver* resolver,
unsigned short type,
XPathResult* result,
ExceptionCode& ec)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = new XPathEvaluator;
return m_xpathEvaluator->evaluate(expression, contextNode, resolver, type, result, ec);
}
#endif // XPATH_SUPPORT
void Document::setStateForNewFormElements(const Vector<String>& stateVector)
{
// Walk the state vector backwards so that the value to use for each
// name/type pair first is the one at the end of each individual vector
// in the FormElementStateMap. We're using them like stacks.
typedef FormElementStateMap::iterator Iterator;
m_formElementsWithState.clear();
for (size_t i = stateVector.size() / 3 * 3; i; i -= 3) {
AtomicString a = stateVector[i - 3];
AtomicString b = stateVector[i - 2];
const String& c = stateVector[i - 1];
FormElementKey key(a.impl(), b.impl());
Iterator it = m_stateForNewFormElements.find(key);
if (it != m_stateForNewFormElements.end())
it->second.append(c);
else {
Vector<String> v(1);
v[0] = c;
m_stateForNewFormElements.set(key, v);
}
}
}
bool Document::hasStateForNewFormElements() const
{
return !m_stateForNewFormElements.isEmpty();
}
bool Document::takeStateForFormElement(AtomicStringImpl* name, AtomicStringImpl* type, String& state)
{
typedef FormElementStateMap::iterator Iterator;
Iterator it = m_stateForNewFormElements.find(FormElementKey(name, type));
if (it == m_stateForNewFormElements.end())
return false;
ASSERT(it->second.size());
state = it->second.last();
if (it->second.size() > 1)
it->second.removeLast();
else
m_stateForNewFormElements.remove(it);
return true;
}
FormElementKey::FormElementKey(AtomicStringImpl* name, AtomicStringImpl* type)
: m_name(name), m_type(type)
{
ref();
}
FormElementKey::~FormElementKey()
{
deref();
}
FormElementKey::FormElementKey(const FormElementKey& other)
: m_name(other.name()), m_type(other.type())
{
ref();
}
FormElementKey& FormElementKey::operator=(const FormElementKey& other)
{
other.ref();
deref();
m_name = other.name();
m_type = other.type();
return *this;
}
void FormElementKey::ref() const
{
if (name() && name() != HashTraits<AtomicStringImpl*>::deletedValue())
name()->ref();
if (type())
type()->ref();
}
void FormElementKey::deref() const
{
if (name() && name() != HashTraits<AtomicStringImpl*>::deletedValue())
name()->deref();
if (type())
type()->deref();
}
unsigned FormElementKeyHash::hash(const FormElementKey& k)
{
ASSERT(sizeof(k) % (sizeof(uint16_t) * 2) == 0);
unsigned l = sizeof(k) / (sizeof(uint16_t) * 2);
const uint16_t* s = reinterpret_cast<const uint16_t*>(&k);
uint32_t hash = PHI;
// Main loop
for (; l > 0; l--) {
hash += s[0];
uint32_t tmp = (s[1] << 11) ^ hash;
hash = (hash << 16) ^ tmp;
s += 2;
hash += hash >> 11;
}
// Force "avalanching" of final 127 bits
hash ^= hash << 3;
hash += hash >> 5;
hash ^= hash << 2;
hash += hash >> 15;
hash ^= hash << 10;
// this avoids ever returning a hash code of 0, since that is used to
// signal "hash not computed yet", using a value that is likely to be
// effectively the same as 0 when the low bits are masked
if (hash == 0)
hash = 0x80000000;
return hash;
}
FormElementKey FormElementKeyHashTraits::deletedValue()
{
return HashTraits<AtomicStringImpl*>::deletedValue();
}
}