diff -r 000000000000 -r 4f2f89ce4247 WebCore/dom/Document.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/dom/Document.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,1335 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ *           (C) 2001 Dirk Mueller (mueller@kde.org)
+ *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef Document_h
+#define Document_h
+
+#include "CachedResourceHandle.h"
+#include "CheckedRadioButtons.h"
+#include "ContainerNode.h"
+#include "CollectionCache.h"
+#include "CollectionType.h"
+#include "Color.h"
+#include "Document.h"
+#include "DocumentMarker.h"
+#include "QualifiedName.h"
+#include "ScriptExecutionContext.h"
+#include "Timer.h"
+#include <wtf/FixedArray.h>
+#include <wtf/HashCountedSet.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
+#if USE(JSC)
+#include <runtime/WeakGCMap.h>
+#endif
+
+namespace WebCore {
+
+    class Attr;
+    class AXObjectCache;
+    class CDATASection;
+    class CachedCSSStyleSheet;
+    class CachedScript;
+    class CanvasRenderingContext;
+    class CharacterData;
+    class CSSStyleDeclaration;
+    class CSSStyleSelector;
+    class CSSStyleSheet;
+    class Comment;
+    class Database;
+    class DOMImplementation;
+    class DOMSelection;
+    class DOMWindow;
+    class DatabaseThread;
+    class DocLoader;
+    class DocumentFragment;
+    class DocumentType;
+    class DocumentWeakReference;
+    class EditingText;
+    class Element;
+    class EntityReference;
+    class Event;
+    class EventListener;
+    class Frame;
+    class FrameView;
+    class HTMLCanvasElement;
+    class HTMLCollection;
+    class HTMLAllCollection;
+    class HTMLDocument;
+    class HTMLElement;
+    class HTMLFormElement;
+    class HTMLFrameOwnerElement;
+    class HTMLHeadElement;
+    class HTMLInputElement;
+    class HTMLMapElement;
+    class HistoryItem;
+    class HitTestRequest;
+    class HitTestResult;
+    class InspectorTimelineAgent;
+    class IntPoint;
+    class DOMWrapperWorld;
+    class JSNode;
+    class MediaCanStartListener;
+    class MouseEventWithHitTestResults;
+    class NodeFilter;
+    class NodeIterator;
+    class Page;
+    class PlatformMouseEvent;
+    class ProcessingInstruction;
+    class Range;
+    class RegisteredEventListener;
+    class RenderArena;
+    class RenderView;
+    class ScriptableDocumentParser;
+    class ScriptElementData;
+    class SecurityOrigin;
+    class SerializedScriptValue;
+    class SegmentedString;
+    class Settings;
+    class StyleSheet;
+    class StyleSheetList;
+    class Text;
+    class TextResourceDecoder;
+    class DocumentParser;
+    class TreeWalker;
+    class XMLHttpRequest;
+
+#if ENABLE(SVG)
+    class SVGDocumentExtensions;
+#endif
+    
+#if ENABLE(XSLT)
+    class TransformSource;
+#endif
+
+#if ENABLE(XBL)
+    class XBLBindingManager;
+#endif
+
+#if ENABLE(XPATH)
+    class XPathEvaluator;
+    class XPathExpression;
+    class XPathNSResolver;
+    class XPathResult;
+#endif
+
+#if ENABLE(DASHBOARD_SUPPORT)
+    struct DashboardRegionValue;
+#endif
+
+    typedef int ExceptionCode;
+
+class FormElementKey {
+public:
+    FormElementKey(AtomicStringImpl* = 0, AtomicStringImpl* = 0);
+    ~FormElementKey();
+    FormElementKey(const FormElementKey&);
+    FormElementKey& operator=(const FormElementKey&);
+
+    AtomicStringImpl* name() const { return m_name; }
+    AtomicStringImpl* type() const { return m_type; }
+
+    // Hash table deleted values, which are only constructed and never copied or destroyed.
+    FormElementKey(WTF::HashTableDeletedValueType) : m_name(hashTableDeletedValue()) { }
+    bool isHashTableDeletedValue() const { return m_name == hashTableDeletedValue(); }
+
+private:
+    void ref() const;
+    void deref() const;
+
+    static AtomicStringImpl* hashTableDeletedValue() { return reinterpret_cast<AtomicStringImpl*>(-1); }
+
+    AtomicStringImpl* m_name;
+    AtomicStringImpl* m_type;
+};
+
+inline bool operator==(const FormElementKey& a, const FormElementKey& b)
+{
+    return a.name() == b.name() && a.type() == b.type();
+}
+
+struct FormElementKeyHash {
+    static unsigned hash(const FormElementKey&);
+    static bool equal(const FormElementKey& a, const FormElementKey& b) { return a == b; }
+    static const bool safeToCompareToEmptyOrDeleted = true;
+};
+
+struct FormElementKeyHashTraits : WTF::GenericHashTraits<FormElementKey> {
+    static void constructDeletedValue(FormElementKey& slot) { new (&slot) FormElementKey(WTF::HashTableDeletedValue); }
+    static bool isDeletedValue(const FormElementKey& value) { return value.isHashTableDeletedValue(); }
+};
+
+enum PageshowEventPersistence {
+    PageshowEventNotPersisted = 0,
+    PageshowEventPersisted = 1
+};
+    
+class Document : public ContainerNode, public ScriptExecutionContext {
+public:
+    static PassRefPtr<Document> create(Frame* frame, const KURL& url)
+    {
+        return adoptRef(new Document(frame, url, false, false));
+    }
+    static PassRefPtr<Document> createXHTML(Frame* frame, const KURL& url)
+    {
+        return adoptRef(new Document(frame, url, true, false));
+    }
+    virtual ~Document();
+
+    using ContainerNode::ref;
+    using ContainerNode::deref;
+
+    // Nodes belonging to this document hold "self-only" references -
+    // these are enough to keep the document from being destroyed, but
+    // not enough to keep it from removing its children. This allows a
+    // node that outlives its document to still have a valid document
+    // pointer without introducing reference cycles
+
+    void selfOnlyRef()
+    {
+        ASSERT(!m_deletionHasBegun);
+        ++m_selfOnlyRefCount;
+    }
+    void selfOnlyDeref()
+    {
+        ASSERT(!m_deletionHasBegun);
+        --m_selfOnlyRefCount;
+        if (!m_selfOnlyRefCount && !refCount()) {
+#ifndef NDEBUG
+            m_deletionHasBegun = true;
+#endif
+            delete this;
+        }
+    }
+
+    // DOM methods & attributes for Document
+
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(change);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(click);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(contextmenu);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(dblclick);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(dragenter);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(dragover);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(dragleave);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(drop);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(dragstart);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(drag);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(dragend);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(input);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(invalid);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(keydown);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(keypress);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(keyup);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(mousedown);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(mousemove);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(mouseout);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(mouseover);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(mouseup);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(mousewheel);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(scroll);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(select);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(submit);
+
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(blur);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(focus);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(load);
+
+    // WebKit extensions
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(beforecut);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(cut);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(beforecopy);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(copy);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(beforepaste);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(paste);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(reset);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(search);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(selectstart);
+#if ENABLE(TOUCH_EVENTS)
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(touchstart);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(touchmove);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(touchend);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(touchcancel);
+#endif
+#if ENABLE(TRANSFORMACTION_EVENTS)
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(transformactionstart);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(transformactionupdate);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(transformactionend);
+#endif
+
+    DocumentType* doctype() const { return m_docType.get(); }
+
+    DOMImplementation* implementation() const;
+    
+    Element* documentElement() const
+    {
+        if (!m_documentElement)
+            cacheDocumentElement();
+        return m_documentElement.get();
+    }
+    
+    virtual PassRefPtr<Element> createElement(const AtomicString& tagName, ExceptionCode&);
+    PassRefPtr<DocumentFragment> createDocumentFragment();
+    PassRefPtr<Text> createTextNode(const String& data);
+    PassRefPtr<Comment> createComment(const String& data);
+    PassRefPtr<CDATASection> createCDATASection(const String& data, ExceptionCode&);
+    PassRefPtr<ProcessingInstruction> createProcessingInstruction(const String& target, const String& data, ExceptionCode&);
+    PassRefPtr<Attr> createAttribute(const String& name, ExceptionCode&);
+    PassRefPtr<Attr> createAttributeNS(const String& namespaceURI, const String& qualifiedName, ExceptionCode&, bool shouldIgnoreNamespaceChecks = false);
+    PassRefPtr<EntityReference> createEntityReference(const String& name, ExceptionCode&);
+    PassRefPtr<Node> importNode(Node* importedNode, bool deep, ExceptionCode&);
+    virtual PassRefPtr<Element> createElementNS(const String& namespaceURI, const String& qualifiedName, ExceptionCode&);
+    PassRefPtr<Element> createElement(const QualifiedName&, bool createdByParser);
+    Element* getElementById(const AtomicString&) const;
+    bool hasElementWithId(AtomicStringImpl* id) const;
+    bool containsMultipleElementsWithId(const AtomicString& elementId) { return m_duplicateIds.contains(elementId.impl()); }
+
+    /**
+     * Retrieve all nodes that intersect a rect in the window's document, until it is fully enclosed by
+     * the boundaries of node.
+     *
+     * @param centerX x reference for the rectangle in CSS pixels
+     * @param centerY y reference for the rectangle in CSS pixels
+     * @param hPadding How much to expand the rectangle horizontally
+     * @param vPadding How much to expand the rectangle vertically
+     * @param ignoreClipping whether or not to ignore the root scroll frame when retrieving the element.
+     *        If false, this method returns null for coordinates outside of the viewport.
+     */
+    PassRefPtr<NodeList> nodesFromRect(int centerX, int centerY, unsigned hPadding, unsigned vPadding, bool ignoreClipping) const;
+    Element* elementFromPoint(int x, int y) const;
+    PassRefPtr<Range> caretRangeFromPoint(int x, int y);
+
+    String readyState() const;
+
+    String defaultCharset() const;
+    
+    // Synonyms backing similar DOM attributes. Use Document::encoding() to avoid virtual dispatch.
+    String inputEncoding() const { return Document::encoding(); }
+    String charset() const { return Document::encoding(); }
+    String characterSet() const { return Document::encoding(); }
+
+    void setCharset(const String&);
+
+    String contentLanguage() const { return m_contentLanguage; }
+    void setContentLanguage(const String& lang) { m_contentLanguage = lang; }
+
+    String xmlEncoding() const { return m_xmlEncoding; }
+    String xmlVersion() const { return m_xmlVersion; }
+    bool xmlStandalone() const { return m_xmlStandalone; }
+
+    void setXMLEncoding(const String& encoding) { m_xmlEncoding = encoding; } // read-only property, only to be set from XMLDocumentParser
+    void setXMLVersion(const String&, ExceptionCode&);
+    void setXMLStandalone(bool, ExceptionCode&);
+
+    String documentURI() const { return m_documentURI; }
+    void setDocumentURI(const String&);
+
+    virtual KURL baseURI() const;
+
+    PassRefPtr<Node> adoptNode(PassRefPtr<Node> source, ExceptionCode&);
+
+    PassRefPtr<HTMLCollection> images();
+    PassRefPtr<HTMLCollection> embeds();
+    PassRefPtr<HTMLCollection> plugins(); // an alias for embeds() required for the JS DOM bindings.
+    PassRefPtr<HTMLCollection> applets();
+    PassRefPtr<HTMLCollection> links();
+    PassRefPtr<HTMLCollection> forms();
+    PassRefPtr<HTMLCollection> anchors();
+    PassRefPtr<HTMLCollection> objects();
+    PassRefPtr<HTMLCollection> scripts();
+    PassRefPtr<HTMLCollection> windowNamedItems(const String& name);
+    PassRefPtr<HTMLCollection> documentNamedItems(const String& name);
+
+    PassRefPtr<HTMLAllCollection> all();
+
+    // Find first anchor with the given name.
+    // First searches for an element with the given ID, but if that fails, then looks
+    // for an anchor with the given name. ID matching is always case sensitive, but
+    // Anchor name matching is case sensitive in strict mode and not case sensitive in
+    // quirks mode for historical compatibility reasons.
+    Element* findAnchor(const String& name);
+
+    CollectionCache* collectionInfo(CollectionType type)
+    {
+        ASSERT(type >= FirstUnnamedDocumentCachedType);
+        unsigned index = type - FirstUnnamedDocumentCachedType;
+        ASSERT(index < NumUnnamedDocumentCachedTypes);
+        m_collectionInfo[index].checkConsistency();
+        return &m_collectionInfo[index]; 
+    }
+
+    CollectionCache* nameCollectionInfo(CollectionType, const AtomicString& name);
+
+    // Other methods (not part of DOM)
+    bool isHTMLDocument() const { return m_isHTML; }
+    bool isXHTMLDocument() const { return m_isXHTML; }
+    virtual bool isImageDocument() const { return false; }
+#if ENABLE(SVG)
+    virtual bool isSVGDocument() const { return false; }
+#else
+    static bool isSVGDocument() { return false; }
+#endif
+    virtual bool isPluginDocument() const { return false; }
+    virtual bool isMediaDocument() const { return false; }
+#if ENABLE(WML)
+    virtual bool isWMLDocument() const { return false; }
+#endif
+#if ENABLE(XHTMLMP)
+    bool isXHTMLMPDocument() const; 
+    bool shouldProcessNoscriptElement() const { return m_shouldProcessNoScriptElement; }
+    void setShouldProcessNoscriptElement(bool shouldDo) { m_shouldProcessNoScriptElement = shouldDo; }
+#endif
+    virtual bool isFrameSet() const { return false; }
+    
+    CSSStyleSelector* styleSelector()
+    { 
+        if (!m_styleSelector)
+            createStyleSelector();
+        return m_styleSelector.get();
+    }
+
+    Element* getElementByAccessKey(const String& key) const;
+    
+    /**
+     * Updates the pending sheet count and then calls updateStyleSelector.
+     */
+    void removePendingSheet();
+
+    /**
+     * This method returns true if all top-level stylesheets have loaded (including
+     * any @imports that they may be loading).
+     */
+    bool haveStylesheetsLoaded() const
+    {
+        return m_pendingStylesheets <= 0 || m_ignorePendingStylesheets;
+    }
+
+    /**
+     * Increments the number of pending sheets.  The <link> elements
+     * invoke this to add themselves to the loading list.
+     */
+    void addPendingSheet() { m_pendingStylesheets++; }
+
+    void addStyleSheetCandidateNode(Node*, bool createdByParser);
+    void removeStyleSheetCandidateNode(Node*);
+
+    bool gotoAnchorNeededAfterStylesheetsLoad() { return m_gotoAnchorNeededAfterStylesheetsLoad; }
+    void setGotoAnchorNeededAfterStylesheetsLoad(bool b) { m_gotoAnchorNeededAfterStylesheetsLoad = b; }
+
+    /**
+     * Called when one or more stylesheets in the document may have been added, removed or changed.
+     *
+     * Creates a new style selector and assign it to this document. This is done by iterating through all nodes in
+     * document (or those before <BODY> in a HTML document), searching for stylesheets. Stylesheets can be contained in
+     * <LINK>, <STYLE> or <BODY> elements, as well as processing instructions (XML documents only). A list is
+     * constructed from these which is used to create the a new style selector which collates all of the stylesheets
+     * found and is used to calculate the derived styles for all rendering objects.
+     */
+    void updateStyleSelector();
+
+    void recalcStyleSelector();
+
+    bool usesDescendantRules() const { return m_usesDescendantRules; }
+    void setUsesDescendantRules(bool b) { m_usesDescendantRules = b; }
+    bool usesSiblingRules() const { return m_usesSiblingRules; }
+    void setUsesSiblingRules(bool b) { m_usesSiblingRules = b; }
+    bool usesFirstLineRules() const { return m_usesFirstLineRules; }
+    void setUsesFirstLineRules(bool b) { m_usesFirstLineRules = b; }
+    bool usesFirstLetterRules() const { return m_usesFirstLetterRules; }
+    void setUsesFirstLetterRules(bool b) { m_usesFirstLetterRules = b; }
+    bool usesBeforeAfterRules() const { return m_usesBeforeAfterRules; }
+    void setUsesBeforeAfterRules(bool b) { m_usesBeforeAfterRules = b; }
+    bool usesRemUnits() const { return m_usesRemUnits; }
+    void setUsesRemUnits(bool b) { m_usesRemUnits = b; }
+    bool usesLinkRules() const { return linkColor() != visitedLinkColor() || m_usesLinkRules; }
+    void setUsesLinkRules(bool b) { m_usesLinkRules = b; }
+
+    // Machinery for saving and restoring state when you leave and then go back to a page.
+    void registerFormElementWithState(Element* e) { m_formElementsWithState.add(e); }
+    void unregisterFormElementWithState(Element* e) { m_formElementsWithState.remove(e); }
+    Vector<String> formElementsState() const;
+    void setStateForNewFormElements(const Vector<String>&);
+    bool hasStateForNewFormElements() const;
+    bool takeStateForFormElement(AtomicStringImpl* name, AtomicStringImpl* type, String& state);
+
+    FrameView* view() const; // can be NULL
+    Frame* frame() const { return m_frame; } // can be NULL
+    Page* page() const; // can be NULL
+    Settings* settings() const; // can be NULL
+#if ENABLE(INSPECTOR)
+    InspectorTimelineAgent* inspectorTimelineAgent() const; // can be NULL
+    virtual InspectorController* inspectorController() const; // can be NULL
+#endif
+
+    PassRefPtr<Range> createRange();
+
+    PassRefPtr<NodeIterator> createNodeIterator(Node* root, unsigned whatToShow,
+        PassRefPtr<NodeFilter>, bool expandEntityReferences, ExceptionCode&);
+
+    PassRefPtr<TreeWalker> createTreeWalker(Node* root, unsigned whatToShow, 
+        PassRefPtr<NodeFilter>, bool expandEntityReferences, ExceptionCode&);
+
+    // Special support for editing
+    PassRefPtr<CSSStyleDeclaration> createCSSStyleDeclaration();
+    PassRefPtr<EditingText> createEditingTextNode(const String&);
+
+    virtual void recalcStyle(StyleChange = NoChange);
+    bool childNeedsAndNotInStyleRecalc();
+    virtual void updateStyleIfNeeded();
+    void updateLayout();
+    void updateLayoutIgnorePendingStylesheets();
+    PassRefPtr<RenderStyle> styleForElementIgnoringPendingStylesheets(Element*);
+    PassRefPtr<RenderStyle> styleForPage(int pageIndex);
+
+    // Returns true if page box (margin boxes and page borders) is visible.
+    bool isPageBoxVisible(int pageIndex);
+
+    // Returns the preferred page size and margins in pixels, assuming 96
+    // pixels per inch. pageSize, marginTop, marginRight, marginBottom,
+    // marginLeft must be initialized to the default values that are used if
+    // auto is specified.
+    void pageSizeAndMarginsInPixels(int pageIndex, IntSize& pageSize, int& marginTop, int& marginRight, int& marginBottom, int& marginLeft);
+
+    static void updateStyleForAllDocuments(); // FIXME: Try to reduce the # of calls to this function.
+    DocLoader* docLoader() { return m_docLoader.get(); }
+
+    virtual void attach();
+    virtual void detach();
+
+    RenderArena* renderArena() { return m_renderArena.get(); }
+
+    RenderView* renderView() const;
+
+    void clearAXObjectCache();
+    AXObjectCache* axObjectCache() const;
+    
+    // to get visually ordered hebrew and arabic pages right
+    void setVisuallyOrdered();
+    bool visuallyOrdered() const { return m_visuallyOrdered; }
+
+    void open(Document* ownerDocument = 0);
+    void implicitOpen();
+    void close();
+    void implicitClose();
+    void cancelParsing();
+
+    void write(const SegmentedString& text, Document* ownerDocument = 0);
+    void write(const String& text, Document* ownerDocument = 0);
+    void writeln(const String& text, Document* ownerDocument = 0);
+    void finishParsing();
+
+    bool wellFormed() const { return m_wellFormed; }
+
+    const KURL& url() const { return m_url; }
+    void setURL(const KURL&);
+
+    const KURL& baseURL() const { return m_baseURL; }
+    // Setting the BaseElementURL will change the baseURL.
+    void setBaseElementURL(const KURL&);
+
+    const String& baseTarget() const { return m_baseTarget; }
+    // Setting the BaseElementTarget will change the baseTarget.
+    void setBaseElementTarget(const String& baseTarget) { m_baseTarget = baseTarget; }
+
+    KURL completeURL(const String&) const;
+
+    virtual String userAgent(const KURL&) const;
+
+    CSSStyleSheet* pageUserSheet();
+    void clearPageUserSheet();
+
+    const Vector<RefPtr<CSSStyleSheet> >* pageGroupUserSheets() const;
+    void clearPageGroupUserSheets();
+
+    CSSStyleSheet* elementSheet();
+    CSSStyleSheet* mappedElementSheet();
+    
+    virtual DocumentParser* createParser();
+    DocumentParser* parser() const { return m_parser.get(); }
+    ScriptableDocumentParser* scriptableDocumentParser() const;
+    
+    bool printing() const { return m_printing; }
+    void setPrinting(bool p) { m_printing = p; }
+
+    enum ParseMode { Compat, AlmostStrict, Strict };
+
+    void setParseMode(ParseMode m) { m_parseMode = m; }
+    ParseMode parseMode() const { return m_parseMode; }
+
+    bool inCompatMode() const { return m_parseMode == Compat; }
+    bool inAlmostStrictMode() const { return m_parseMode == AlmostStrict; }
+    bool inStrictMode() const { return m_parseMode == Strict; }
+    
+    void setParsing(bool);
+    bool parsing() const { return m_bParsing; }
+    int minimumLayoutDelay();
+
+    // This method is used by Android.
+    void setExtraLayoutDelay(int delay) { m_extraLayoutDelay = delay; }
+
+    bool shouldScheduleLayout();
+    int elapsedTime() const;
+    
+    void setTextColor(const Color& color) { m_textColor = color; }
+    Color textColor() const { return m_textColor; }
+
+    const Color& linkColor() const { return m_linkColor; }
+    const Color& visitedLinkColor() const { return m_visitedLinkColor; }
+    const Color& activeLinkColor() const { return m_activeLinkColor; }
+    void setLinkColor(const Color& c) { m_linkColor = c; }
+    void setVisitedLinkColor(const Color& c) { m_visitedLinkColor = c; }
+    void setActiveLinkColor(const Color& c) { m_activeLinkColor = c; }
+    void resetLinkColor();
+    void resetVisitedLinkColor();
+    void resetActiveLinkColor();
+    
+    MouseEventWithHitTestResults prepareMouseEvent(const HitTestRequest&, const IntPoint&, const PlatformMouseEvent&);
+
+    StyleSheetList* styleSheets();
+
+    /* Newly proposed CSS3 mechanism for selecting alternate
+       stylesheets using the DOM. May be subject to change as
+       spec matures. - dwh
+    */
+    String preferredStylesheetSet() const;
+    String selectedStylesheetSet() const;
+    void setSelectedStylesheetSet(const String&);
+
+    bool setFocusedNode(PassRefPtr<Node>);
+    Node* focusedNode() const { return m_focusedNode.get(); }
+
+    void getFocusableNodes(Vector<RefPtr<Node> >&);
+    
+    // The m_ignoreAutofocus flag specifies whether or not the document has been changed by the user enough 
+    // for WebCore to ignore the autofocus attribute on any form controls
+    bool ignoreAutofocus() const { return m_ignoreAutofocus; };
+    void setIgnoreAutofocus(bool shouldIgnore = true) { m_ignoreAutofocus = shouldIgnore; };
+
+    void setHoverNode(PassRefPtr<Node>);
+    Node* hoverNode() const { return m_hoverNode.get(); }
+
+    void setActiveNode(PassRefPtr<Node>);
+    Node* activeNode() const { return m_activeNode.get(); }
+
+    void focusedNodeRemoved();
+    void removeFocusedNodeOfSubtree(Node*, bool amongChildrenOnly = false);
+    void hoveredNodeDetached(Node*);
+    void activeChainNodeDetached(Node*);
+
+    // Updates for :target (CSS3 selector).
+    void setCSSTarget(Element*);
+    Element* cssTarget() const { return m_cssTarget; }
+    
+    void scheduleStyleRecalc();
+    void unscheduleStyleRecalc();
+    void styleRecalcTimerFired(Timer<Document>*);
+
+    void attachNodeIterator(NodeIterator*);
+    void detachNodeIterator(NodeIterator*);
+
+    void attachRange(Range*);
+    void detachRange(Range*);
+
+    void nodeChildrenChanged(ContainerNode*);
+    // nodeChildrenWillBeRemoved is used when removing all node children at once.
+    void nodeChildrenWillBeRemoved(ContainerNode*);
+    // nodeWillBeRemoved is only safe when removing one node at a time.
+    void nodeWillBeRemoved(Node*);
+
+    void textInserted(Node*, unsigned offset, unsigned length);
+    void textRemoved(Node*, unsigned offset, unsigned length);
+    void textNodesMerged(Text* oldNode, unsigned offset);
+    void textNodeSplit(Text* oldNode);
+
+    DOMWindow* defaultView() const { return domWindow(); } 
+    DOMWindow* domWindow() const;
+
+    // Helper functions for forwarding DOMWindow event related tasks to the DOMWindow if it exists.
+    void setWindowAttributeEventListener(const AtomicString& eventType, PassRefPtr<EventListener>);
+    EventListener* getWindowAttributeEventListener(const AtomicString& eventType);
+    void dispatchWindowEvent(PassRefPtr<Event>, PassRefPtr<EventTarget> = 0);
+    void dispatchWindowLoadEvent();
+
+    PassRefPtr<Event> createEvent(const String& eventType, ExceptionCode&);
+
+    // keep track of what types of event listeners are registered, so we don't
+    // dispatch events unnecessarily
+    enum ListenerType {
+        DOMSUBTREEMODIFIED_LISTENER          = 0x01,
+        DOMNODEINSERTED_LISTENER             = 0x02,
+        DOMNODEREMOVED_LISTENER              = 0x04,
+        DOMNODEREMOVEDFROMDOCUMENT_LISTENER  = 0x08,
+        DOMNODEINSERTEDINTODOCUMENT_LISTENER = 0x10,
+        DOMATTRMODIFIED_LISTENER             = 0x20,
+        DOMCHARACTERDATAMODIFIED_LISTENER    = 0x40,
+        OVERFLOWCHANGED_LISTENER             = 0x80,
+        ANIMATIONEND_LISTENER                = 0x100,
+        ANIMATIONSTART_LISTENER              = 0x200,
+        ANIMATIONITERATION_LISTENER          = 0x400,
+        TRANSITIONEND_LISTENER               = 0x800,
+        BEFORELOAD_LISTENER                  = 0x1000,
+        TOUCH_LISTENER                       = 0x2000,
+        BEFOREPROCESS_LISTENER               = 0x4000,
+        TRANSFORMACTION_LISTENER             = 0x8000
+    };
+
+    bool hasListenerType(ListenerType listenerType) const { return (m_listenerTypes & listenerType); }
+    void addListenerType(ListenerType listenerType) { m_listenerTypes = m_listenerTypes | listenerType; }
+    void addListenerTypeIfNeeded(const AtomicString& eventType);
+
+    CSSStyleDeclaration* getOverrideStyle(Element*, const String& pseudoElt);
+
+    /**
+     * Searches through the document, starting from fromNode, for the next selectable element that comes after fromNode.
+     * The order followed is as specified in section 17.11.1 of the HTML4 spec, which is elements with tab indexes
+     * first (from lowest to highest), and then elements without tab indexes (in document order).
+     *
+     * @param fromNode The node from which to start searching. The node after this will be focused. May be null.
+     *
+     * @return The focus node that comes after fromNode
+     *
+     * See http://www.w3.org/TR/html4/interact/forms.html#h-17.11.1
+     */
+    Node* nextFocusableNode(Node* start, KeyboardEvent*);
+
+    /**
+     * Searches through the document, starting from fromNode, for the previous selectable element (that comes _before_)
+     * fromNode. The order followed is as specified in section 17.11.1 of the HTML4 spec, which is elements with tab
+     * indexes first (from lowest to highest), and then elements without tab indexes (in document order).
+     *
+     * @param fromNode The node from which to start searching. The node before this will be focused. May be null.
+     *
+     * @return The focus node that comes before fromNode
+     *
+     * See http://www.w3.org/TR/html4/interact/forms.html#h-17.11.1
+     */
+    Node* previousFocusableNode(Node* start, KeyboardEvent*);
+
+    int nodeAbsIndex(Node*);
+    Node* nodeWithAbsIndex(int absIndex);
+
+    /**
+     * Handles a HTTP header equivalent set by a meta tag using <meta http-equiv="..." content="...">. This is called
+     * when a meta tag is encountered during document parsing, and also when a script dynamically changes or adds a meta
+     * tag. This enables scripts to use meta tags to perform refreshes and set expiry dates in addition to them being
+     * specified in a HTML file.
+     *
+     * @param equiv The http header name (value of the meta tag's "equiv" attribute)
+     * @param content The header value (value of the meta tag's "content" attribute)
+     */
+    void processHttpEquiv(const String& equiv, const String& content);
+    void processViewport(const String& features);
+
+    // Returns the owning element in the parent document.
+    // Returns 0 if this is the top level document.
+    HTMLFrameOwnerElement* ownerElement() const;
+
+    String title() const { return m_title; }
+    void setTitle(const String&, Element* titleElement = 0);
+    void removeTitle(Element* titleElement);
+
+    String cookie(ExceptionCode&) const;
+    void setCookie(const String&, ExceptionCode&);
+
+    String referrer() const;
+
+    String domain() const;
+    void setDomain(const String& newDomain, ExceptionCode&);
+
+    String lastModified() const;
+
+    // The cookieURL is used to query the cookie database for this document's
+    // cookies. For example, if the cookie URL is http://example.com, we'll
+    // use the non-Secure cookies for example.com when computing
+    // document.cookie.
+    //
+    // Q: How is the cookieURL different from the document's URL?
+    // A: The two URLs are the same almost all the time.  However, if one
+    //    document inherits the security context of another document, it
+    //    inherits its cookieURL but not its URL.
+    //
+    const KURL& cookieURL() const { return m_cookieURL; }
+
+    // The firstPartyForCookies is used to compute whether this document
+    // appears in a "third-party" context for the purpose of third-party
+    // cookie blocking.  The document is in a third-party context if the
+    // cookieURL and the firstPartyForCookies are from different hosts.
+    //
+    // Note: Some ports (including possibly Apple's) only consider the
+    //       document in a third-party context if the cookieURL and the
+    //       firstPartyForCookies have a different registry-controlled
+    //       domain.
+    //
+    const KURL& firstPartyForCookies() const { return m_firstPartyForCookies; }
+    void setFirstPartyForCookies(const KURL& url) { m_firstPartyForCookies = url; }
+    
+    // The following implements the rule from HTML 4 for what valid names are.
+    // To get this right for all the XML cases, we probably have to improve this or move it
+    // and make it sensitive to the type of document.
+    static bool isValidName(const String&);
+
+    // The following breaks a qualified name into a prefix and a local name.
+    // It also does a validity check, and returns false if the qualified name
+    // is invalid.  It also sets ExceptionCode when name is invalid.
+    static bool parseQualifiedName(const String& qualifiedName, String& prefix, String& localName, ExceptionCode&);
+    
+    // Checks to make sure prefix and namespace do not conflict (per DOM Core 3)
+    static bool hasPrefixNamespaceMismatch(const QualifiedName&);
+    
+    void addElementById(const AtomicString& elementId, Element *element);
+    void removeElementById(const AtomicString& elementId, Element *element);
+
+    void addImageMap(HTMLMapElement*);
+    void removeImageMap(HTMLMapElement*);
+    HTMLMapElement* getImageMap(const String& url) const;
+
+    HTMLElement* body() const;
+    void setBody(PassRefPtr<HTMLElement>, ExceptionCode&);
+
+    HTMLHeadElement* head();
+
+    bool execCommand(const String& command, bool userInterface = false, const String& value = String());
+    bool queryCommandEnabled(const String& command);
+    bool queryCommandIndeterm(const String& command);
+    bool queryCommandState(const String& command);
+    bool queryCommandSupported(const String& command);
+    String queryCommandValue(const String& command);
+    
+    void addMarker(Range*, DocumentMarker::MarkerType, String description = String());
+    void addMarker(Node*, DocumentMarker);
+    void copyMarkers(Node *srcNode, unsigned startOffset, int length, Node *dstNode, int delta, DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    void removeMarkers(Range*, DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    void removeMarkers(Node*, unsigned startOffset, int length, DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    void removeMarkers(DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    void removeMarkers(Node*);
+    void repaintMarkers(DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    void setRenderedRectForMarker(Node*, const DocumentMarker&, const IntRect&);
+    void invalidateRenderedRectsForMarkersInRect(const IntRect&);
+    void shiftMarkers(Node*, unsigned startOffset, int delta, DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    void setMarkersActive(Range*, bool);
+    void setMarkersActive(Node*, unsigned startOffset, unsigned endOffset, bool);
+
+    DocumentMarker* markerContainingPoint(const IntPoint&, DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    Vector<DocumentMarker> markersForNode(Node*);
+    Vector<IntRect> renderedRectsForMarkers(DocumentMarker::MarkerType = DocumentMarker::AllMarkers);
+    
+    // designMode support
+    enum InheritedBool { off = false, on = true, inherit };    
+    void setDesignMode(InheritedBool value);
+    InheritedBool getDesignMode() const;
+    bool inDesignMode() const;
+
+    Document* parentDocument() const;
+    Document* topDocument() const;
+
+    int docID() const { return m_docID; }
+
+    void executeScriptSoon(ScriptElementData*, CachedResourceHandle<CachedScript>);
+
+    void suspendExecuteScriptSoonTimer();
+    void resumeExecuteScriptSoonTimer();
+
+#if ENABLE(XSLT)
+    void applyXSLTransform(ProcessingInstruction* pi);
+    PassRefPtr<Document> transformSourceDocument() { return m_transformSourceDocument; }
+    void setTransformSourceDocument(Document* doc) { m_transformSourceDocument = doc; }
+
+    void setTransformSource(PassOwnPtr<TransformSource>);
+    TransformSource* transformSource() const { return m_transformSource.get(); }
+#endif
+
+#if ENABLE(XBL)
+    // XBL methods
+    XBLBindingManager* bindingManager() const { return m_bindingManager.get(); }
+#endif
+
+    void incDOMTreeVersion() { ++m_domtree_version; }
+    unsigned domTreeVersion() const { return m_domtree_version; }
+
+    void setDocType(PassRefPtr<DocumentType>);
+
+#if ENABLE(XPATH)
+    // XPathEvaluator methods
+    PassRefPtr<XPathExpression> createExpression(const String& expression,
+                                                 XPathNSResolver* resolver,
+                                                 ExceptionCode& ec);
+    PassRefPtr<XPathNSResolver> createNSResolver(Node *nodeResolver);
+    PassRefPtr<XPathResult> evaluate(const String& expression,
+                                     Node* contextNode,
+                                     XPathNSResolver* resolver,
+                                     unsigned short type,
+                                     XPathResult* result,
+                                     ExceptionCode& ec);
+#endif // ENABLE(XPATH)
+    
+    enum PendingSheetLayout { NoLayoutWithPendingSheets, DidLayoutWithPendingSheets, IgnoreLayoutWithPendingSheets };
+
+    bool didLayoutWithPendingStylesheets() const { return m_pendingSheetLayout == DidLayoutWithPendingSheets; }
+    
+    void setHasNodesWithPlaceholderStyle() { m_hasNodesWithPlaceholderStyle = true; }
+
+    const String& iconURL() const { return m_iconURL; }
+    void setIconURL(const String& iconURL, const String& type);
+
+    void setUseSecureKeyboardEntryWhenActive(bool);
+    bool useSecureKeyboardEntryWhenActive() const;
+
+    void addNodeListCache() { ++m_numNodeListCaches; }
+    void removeNodeListCache() { ASSERT(m_numNodeListCaches > 0); --m_numNodeListCaches; }
+    bool hasNodeListCaches() const { return m_numNodeListCaches; }
+
+    void updateFocusAppearanceSoon(bool restorePreviousSelection);
+    void cancelFocusAppearanceUpdate();
+        
+    // FF method for accessing the selection added for compatibility.
+    DOMSelection* getSelection() const;
+    
+    // Extension for manipulating canvas drawing contexts for use in CSS
+    CanvasRenderingContext* getCSSCanvasContext(const String& type, const String& name, int width, int height);
+    HTMLCanvasElement* getCSSCanvasElement(const String& name);
+
+    bool isDNSPrefetchEnabled() const { return m_isDNSPrefetchEnabled; }
+    void parseDNSPrefetchControlHeader(const String&);
+
+    virtual void reportException(const String& errorMessage, int lineNumber, const String& sourceURL);
+    virtual void addMessage(MessageSource, MessageType, MessageLevel, const String& message, unsigned lineNumber, const String& sourceURL);
+    virtual void postTask(PassOwnPtr<Task>); // Executes the task on context's thread asynchronously.
+
+#if USE(JSC)
+    typedef JSC::WeakGCMap<WebCore::Node*, JSNode*> JSWrapperCache;
+    typedef HashMap<DOMWrapperWorld*, JSWrapperCache*> JSWrapperCacheMap;
+    JSWrapperCacheMap& wrapperCacheMap() { return m_wrapperCacheMap; }
+    JSWrapperCache* getWrapperCache(DOMWrapperWorld* world);
+    JSWrapperCache* createWrapperCache(DOMWrapperWorld*);
+    void destroyWrapperCache(DOMWrapperWorld*);
+    void destroyAllWrapperCaches();
+#endif
+
+    virtual void finishedParsing();
+
+    bool inPageCache() const { return m_inPageCache; }
+    void setInPageCache(bool flag);
+    
+    // Elements can register themselves for the "documentWillBecomeInactive()" and  
+    // "documentDidBecomeActive()" callbacks
+    void registerForDocumentActivationCallbacks(Element*);
+    void unregisterForDocumentActivationCallbacks(Element*);
+    void documentWillBecomeInactive();
+    void documentDidBecomeActive();
+
+    void registerForMediaVolumeCallbacks(Element*);
+    void unregisterForMediaVolumeCallbacks(Element*);
+    void mediaVolumeDidChange();
+
+    void setShouldCreateRenderers(bool);
+    bool shouldCreateRenderers();
+
+    void setDecoder(PassRefPtr<TextResourceDecoder>);
+    TextResourceDecoder* decoder() const { return m_decoder.get(); }
+
+    String displayStringModifiedByEncoding(const String&) const;
+    PassRefPtr<StringImpl> displayStringModifiedByEncoding(PassRefPtr<StringImpl>) const;
+    void displayBufferModifiedByEncoding(UChar* buffer, unsigned len) const;
+
+    // Quirk for the benefit of Apple's Dictionary application.
+    void setFrameElementsShouldIgnoreScrolling(bool ignore) { m_frameElementsShouldIgnoreScrolling = ignore; }
+    bool frameElementsShouldIgnoreScrolling() const { return m_frameElementsShouldIgnoreScrolling; }
+
+#if ENABLE(DASHBOARD_SUPPORT)
+    void setDashboardRegionsDirty(bool f) { m_dashboardRegionsDirty = f; }
+    bool dashboardRegionsDirty() const { return m_dashboardRegionsDirty; }
+    bool hasDashboardRegions () const { return m_hasDashboardRegions; }
+    void setHasDashboardRegions(bool f) { m_hasDashboardRegions = f; }
+    const Vector<DashboardRegionValue>& dashboardRegions() const;
+    void setDashboardRegions(const Vector<DashboardRegionValue>&);
+#endif
+
+    virtual void removeAllEventListeners();
+
+    CheckedRadioButtons& checkedRadioButtons() { return m_checkedRadioButtons; }
+    
+#if ENABLE(SVG)
+    const SVGDocumentExtensions* svgExtensions();
+    SVGDocumentExtensions* accessSVGExtensions();
+#endif
+
+    void initSecurityContext();
+
+    // Explicitly override the security origin for this document.
+    // Note: It is dangerous to change the security origin of a document
+    //       that already contains content.
+    void setSecurityOrigin(SecurityOrigin*);
+
+    void updateURLForPushOrReplaceState(const KURL&);
+    void statePopped(SerializedScriptValue*);
+
+    bool processingLoadEvent() const { return m_processingLoadEvent; }
+
+#if ENABLE(DATABASE)
+    virtual bool isDatabaseReadOnly() const;
+    virtual void databaseExceededQuota(const String& name);
+#endif
+
+    virtual bool isContextThread() const;
+    virtual bool isJSExecutionTerminated() const { return false; }
+
+    void setUsingGeolocation(bool f) { m_usingGeolocation = f; }
+    bool usingGeolocation() const { return m_usingGeolocation; };
+
+#if ENABLE(WML)
+    void setContainsWMLContent(bool value) { m_containsWMLContent = value; }
+    bool containsWMLContent() const { return m_containsWMLContent; }
+
+    void resetWMLPageState();
+    void initializeWMLPageState();
+#endif
+    
+    bool containsValidityStyleRules() const { return m_containsValidityStyleRules; }
+    void setContainsValidityStyleRules() { m_containsValidityStyleRules = true; }
+
+    void enqueueEvent(PassRefPtr<Event>);
+    void enqueuePageshowEvent(PageshowEventPersistence);
+    void enqueueHashchangeEvent(const String& oldURL, const String& newURL);
+
+    void addMediaCanStartListener(MediaCanStartListener*);
+    void removeMediaCanStartListener(MediaCanStartListener*);
+    MediaCanStartListener* takeAnyMediaCanStartListener();
+
+    const QualifiedName& idAttributeName() const { return m_idAttributeName; }
+
+protected:
+    Document(Frame*, const KURL&, bool isXHTML, bool isHTML);
+
+    void clearXMLVersion() { m_xmlVersion = String(); }
+
+private:
+
+    typedef void (*ArgumentsCallback)(const String& keyString, const String& valueString, Document*, void* data);
+    void processArguments(const String& features, void* data, ArgumentsCallback);
+
+    virtual bool isDocument() const { return true; }
+    virtual void removedLastRef();
+    virtual void determineParseMode() { }
+
+    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
+
+    virtual String nodeName() const;
+    virtual NodeType nodeType() const;
+    virtual bool childTypeAllowed(NodeType);
+    virtual PassRefPtr<Node> cloneNode(bool deep);
+    virtual bool canReplaceChild(Node* newChild, Node* oldChild);
+
+    virtual void refScriptExecutionContext() { ref(); }
+    virtual void derefScriptExecutionContext() { deref(); }
+
+    virtual const KURL& virtualURL() const; // Same as url(), but needed for ScriptExecutionContext to implement it without a performance loss for direct calls.
+    virtual KURL virtualCompleteURL(const String&) const; // Same as completeURL() for the same reason as above.
+
+    void initDNSPrefetch();
+
+    String encoding() const;
+
+    void executeScriptSoonTimerFired(Timer<Document>*);
+
+    void updateTitle();
+    void updateFocusAppearanceTimerFired(Timer<Document>*);
+    void updateBaseURL();
+
+    void cacheDocumentElement() const;
+
+    void createStyleSelector();
+
+    void enqueuePopstateEvent(PassRefPtr<SerializedScriptValue> stateObject);
+    void pendingEventTimerFired(Timer<Document>*);
+
+    PassRefPtr<NodeList> handleZeroPadding(const HitTestRequest&, HitTestResult&) const;
+
+    OwnPtr<CSSStyleSelector> m_styleSelector;
+    bool m_didCalculateStyleSelector;
+
+    Frame* m_frame;
+    OwnPtr<DocLoader> m_docLoader;
+    OwnPtr<DocumentParser> m_parser;
+    bool m_wellFormed;
+
+    // Document URLs.
+    KURL m_url;  // Document.URL: The URL from which this document was retrieved.
+    KURL m_baseURL;  // Node.baseURI: The URL to use when resolving relative URLs.
+    KURL m_baseElementURL;  // The URL set by the <base> element.
+    KURL m_cookieURL;  // The URL to use for cookie access.
+    KURL m_firstPartyForCookies; // The policy URL for third-party cookie blocking.
+
+    // Document.documentURI:
+    // Although URL-like, Document.documentURI can actually be set to any
+    // string by content.  Document.documentURI affects m_baseURL unless the
+    // document contains a <base> element, in which case the <base> element
+    // takes precedence.
+    String m_documentURI;
+
+    String m_baseTarget;
+
+    RefPtr<DocumentType> m_docType;
+    mutable RefPtr<DOMImplementation> m_implementation;
+
+    // Track the number of currently loading top-level stylesheets.  Sheets
+    // loaded using the @import directive are not included in this count.
+    // We use this count of pending sheets to detect when we can begin attaching
+    // elements.
+    int m_pendingStylesheets;
+
+    // But sometimes you need to ignore pending stylesheet count to
+    // force an immediate layout when requested by JS.
+    bool m_ignorePendingStylesheets;
+
+    // If we do ignore the pending stylesheet count, then we need to add a boolean
+    // to track that this happened so that we can do a full repaint when the stylesheets
+    // do eventually load.
+    PendingSheetLayout m_pendingSheetLayout;
+    
+    bool m_hasNodesWithPlaceholderStyle;
+
+    RefPtr<CSSStyleSheet> m_elemSheet;
+    RefPtr<CSSStyleSheet> m_mappedElementSheet;
+    RefPtr<CSSStyleSheet> m_pageUserSheet;
+    mutable OwnPtr<Vector<RefPtr<CSSStyleSheet> > > m_pageGroupUserSheets;
+    mutable bool m_pageGroupUserSheetCacheValid;
+
+    bool m_printing;
+    
+    bool m_ignoreAutofocus;
+
+    ParseMode m_parseMode;
+
+    Color m_textColor;
+
+    RefPtr<Node> m_focusedNode;
+    RefPtr<Node> m_hoverNode;
+    RefPtr<Node> m_activeNode;
+    mutable RefPtr<Element> m_documentElement;
+
+    unsigned m_domtree_version;
+    
+    HashSet<NodeIterator*> m_nodeIterators;
+    HashSet<Range*> m_ranges;
+
+    unsigned short m_listenerTypes;
+
+    RefPtr<StyleSheetList> m_styleSheets; // All of the stylesheets that are currently in effect for our media type and stylesheet set.
+    
+    typedef ListHashSet<Node*, 32> StyleSheetCandidateListHashSet;
+    StyleSheetCandidateListHashSet m_styleSheetCandidateNodes; // All of the nodes that could potentially provide stylesheets to the document (<link>, <style>, <?xml-stylesheet>)
+
+    typedef ListHashSet<Element*, 64> FormElementListHashSet;
+    FormElementListHashSet m_formElementsWithState;
+
+    typedef HashMap<FormElementKey, Vector<String>, FormElementKeyHash, FormElementKeyHashTraits> FormElementStateMap;
+    FormElementStateMap m_stateForNewFormElements;
+    
+    Color m_linkColor;
+    Color m_visitedLinkColor;
+    Color m_activeLinkColor;
+
+    String m_preferredStylesheetSet;
+    String m_selectedStylesheetSet;
+
+    bool m_loadingSheet;
+    bool m_visuallyOrdered;
+    bool m_bParsing;
+    Timer<Document> m_styleRecalcTimer;
+    bool m_inStyleRecalc;
+    bool m_closeAfterStyleRecalc;
+    bool m_usesDescendantRules;
+    bool m_usesSiblingRules;
+    bool m_usesFirstLineRules;
+    bool m_usesFirstLetterRules;
+    bool m_usesBeforeAfterRules;
+    bool m_usesRemUnits;
+    bool m_usesLinkRules;
+    bool m_gotoAnchorNeededAfterStylesheetsLoad;
+    bool m_isDNSPrefetchEnabled;
+    bool m_haveExplicitlyDisabledDNSPrefetch;
+    bool m_frameElementsShouldIgnoreScrolling;
+    bool m_containsValidityStyleRules;
+    bool m_updateFocusAppearanceRestoresSelection;
+
+    String m_title;
+    String m_rawTitle;
+    bool m_titleSetExplicitly;
+    RefPtr<Element> m_titleElement;
+
+    OwnPtr<RenderArena> m_renderArena;
+
+    typedef std::pair<Vector<DocumentMarker>, Vector<IntRect> > MarkerMapVectorPair;
+    typedef HashMap<RefPtr<Node>, MarkerMapVectorPair*> MarkerMap;
+    MarkerMap m_markers;
+
+    mutable AXObjectCache* m_axObjectCache;
+    
+    Timer<Document> m_updateFocusAppearanceTimer;
+
+    Element* m_cssTarget;
+    
+    bool m_processingLoadEvent;
+    RefPtr<SerializedScriptValue> m_pendingStateObject;
+    double m_startTime;
+    bool m_overMinimumLayoutThreshold;
+    // This is used to increase the minimum delay between re-layouts. It is set
+    // using setExtraLayoutDelay to modify the minimum delay used at different
+    // points during the lifetime of the Document.
+    int m_extraLayoutDelay;
+
+    Vector<std::pair<ScriptElementData*, CachedResourceHandle<CachedScript> > > m_scriptsToExecuteSoon;
+    Timer<Document> m_executeScriptSoonTimer;
+    
+#if ENABLE(XSLT)
+    OwnPtr<TransformSource> m_transformSource;
+    RefPtr<Document> m_transformSourceDocument;
+#endif
+
+#if ENABLE(XBL)
+    OwnPtr<XBLBindingManager> m_bindingManager; // The access point through which documents and elements communicate with XBL.
+#endif
+    
+    typedef HashMap<AtomicStringImpl*, HTMLMapElement*> ImageMapsByName;
+    ImageMapsByName m_imageMapsByName;
+
+    int m_docID; // A unique document identifier used for things like document-specific mapped attributes.
+
+    String m_xmlEncoding;
+    String m_xmlVersion;
+    bool m_xmlStandalone;
+
+    String m_contentLanguage;
+
+#if ENABLE(XHTMLMP)
+    bool m_shouldProcessNoScriptElement;
+#endif
+
+    RenderObject* m_savedRenderer;
+    
+    RefPtr<TextResourceDecoder> m_decoder;
+
+    // We maintain the invariant that m_duplicateIds is the count of all elements with a given ID
+    // excluding the one referenced in m_elementsById, if any. This means it one less than the total count
+    // when the first node with a given ID is cached, otherwise the same as the total count.
+    mutable HashMap<AtomicStringImpl*, Element*> m_elementsById;
+    mutable HashCountedSet<AtomicStringImpl*> m_duplicateIds;
+    
+    mutable HashMap<StringImpl*, Element*, CaseFoldingHash> m_elementsByAccessKey;
+    
+    InheritedBool m_designMode;
+    
+    int m_selfOnlyRefCount;
+
+    CheckedRadioButtons m_checkedRadioButtons;
+
+    typedef HashMap<AtomicStringImpl*, CollectionCache*> NamedCollectionMap;
+    FixedArray<CollectionCache, NumUnnamedDocumentCachedTypes> m_collectionInfo;
+    FixedArray<NamedCollectionMap, NumNamedDocumentCachedTypes> m_nameCollectionInfo;
+
+#if ENABLE(XPATH)
+    RefPtr<XPathEvaluator> m_xpathEvaluator;
+#endif
+    
+#if ENABLE(SVG)
+    OwnPtr<SVGDocumentExtensions> m_svgExtensions;
+#endif
+    
+#if ENABLE(DASHBOARD_SUPPORT)
+    Vector<DashboardRegionValue> m_dashboardRegions;
+    bool m_hasDashboardRegions;
+    bool m_dashboardRegionsDirty;
+#endif
+
+    HashMap<String, RefPtr<HTMLCanvasElement> > m_cssCanvasElements;
+
+    mutable bool m_accessKeyMapValid;
+    bool m_createRenderers;
+    bool m_inPageCache;
+    String m_iconURL;
+    
+    HashSet<Element*> m_documentActivationCallbackElements;
+    HashSet<Element*> m_mediaVolumeCallbackElements;
+
+    bool m_useSecureKeyboardEntryWhenActive;
+
+    bool m_isXHTML;
+    bool m_isHTML;
+
+    unsigned m_numNodeListCaches;
+
+#if USE(JSC)
+    JSWrapperCacheMap m_wrapperCacheMap;
+    JSWrapperCache* m_normalWorldWrapperCache;
+#endif
+
+    bool m_usingGeolocation;
+
+    Timer<Document> m_pendingEventTimer;
+    Vector<RefPtr<Event> > m_pendingEventQueue;
+
+#if ENABLE(WML)
+    bool m_containsWMLContent;
+#endif
+
+    RefPtr<DocumentWeakReference> m_weakReference;
+
+    HashSet<MediaCanStartListener*> m_mediaCanStartListeners;
+
+    QualifiedName m_idAttributeName;
+};
+
+inline bool Document::hasElementWithId(AtomicStringImpl* id) const
+{
+    ASSERT(id);
+    return m_elementsById.contains(id) || m_duplicateIds.contains(id);
+}
+    
+inline bool Node::isDocumentNode() const
+{
+    return this == m_document;
+}
+
+// here because it uses a Document method but we really want to inline it
+inline Node::Node(Document* document, ConstructionType type)
+    : TreeShared<Node>(initialRefCount(type))
+    , m_document(document)
+    , m_previous(0)
+    , m_next(0)
+    , m_renderer(0)
+    , m_nodeFlags(type)
+{
+    if (m_document)
+        m_document->selfOnlyRef();
+#if !defined(NDEBUG) || (defined(DUMP_NODE_STATISTICS) && DUMP_NODE_STATISTICS)
+    trackForDebugging();
+#endif
+}
+
+} // namespace WebCore
+
+#endif // Document_h