dom_docimpl.h

khtml在gtk上的移植版本

    // ### think about implementing ref'counting for the id's
    // in order to be able to reassign those that are no longer in use
    // (could make problems when it is still kept somewhere around, i.e. styleselector)
    NodeImpl::Id tagId(DOMStringImpl* _namespaceURI, DOMStringImpl *_name, bool readonly);
    DOMString tagName(NodeImpl::Id _id) const;

    NodeImpl::Id attrId(DOMStringImpl* _namespaceURI, DOMStringImpl *_name, bool readonly);
    DOMString attrName(NodeImpl::Id _id) const;

    // the namespace uri is mapped to the same id for both
    // tagnames as well as attributes.
    DOMStringImpl* namespaceURI(NodeImpl::Id _id) const;

    StyleSheetListImpl* styleSheets();

    /* Newly proposed CSS3 mechanism for selecting alternate
       stylesheets using the DOM. May be subject to change as
       spec matures. - dwh
    */
    DOMString preferredStylesheetSet();
    DOMString selectedStylesheetSet();
    void setSelectedStylesheetSet(const DOMString& aString);

    QStringList availableStyleSheets() const;

    NodeImpl *focusNode() const { return m_focusNode; }
    bool setFocusNode(NodeImpl *newFocusNode);

    NodeImpl *hoverNode() const { return m_hoverNode; }
    void setHoverNode(NodeImpl *newHoverNode);
    
    // Updates for :target (CSS3 selector).
    void setCSSTarget(NodeImpl* n);
    NodeImpl* getCSSTarget();
    
    void setDocumentChanged(bool);

    void attachNodeIterator(NodeIteratorImpl *ni);
    void detachNodeIterator(NodeIteratorImpl *ni);
    void notifyBeforeNodeRemoval(NodeImpl *n);
    AbstractViewImpl *defaultView() const;
    EventImpl *createEvent(const DOMString &eventType, int &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
    };

    bool hasListenerType(ListenerType listenerType) const { return (m_listenerTypes & listenerType); }
    void addListenerType(ListenerType listenerType) { m_listenerTypes = m_listenerTypes | listenerType; }

    CSSStyleDeclarationImpl *getOverrideStyle(ElementImpl *elt, DOMStringImpl *pseudoElt);

    typedef QMap<QString, ProcessingInstructionImpl*> LocalStyleRefs;
    LocalStyleRefs* localStyleRefs() { return &m_localStyleRefs; }

    virtual void defaultEventHandler(EventImpl *evt);
    void setHTMLWindowEventListener(int id, EventListener *listener);
    EventListener *getHTMLWindowEventListener(int id);
    void removeHTMLWindowEventListener(int id);

    void addWindowEventListener(int id, EventListener *listener, const bool useCapture);
    void removeWindowEventListener(int id, EventListener *listener, bool useCapture);
    bool hasWindowEventListener(int id);

    EventListener *createHTMLEventListener(QString code);
    
    /**
     * 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
     */
    NodeImpl *nextFocusNode(NodeImpl *fromNode);

    /**
     * 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
     */
    NodeImpl *previousFocusNode(NodeImpl *fromNode);

    int nodeAbsIndex(NodeImpl *node);
    NodeImpl *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 DOMString &equiv, const DOMString &content);
    
    void dispatchImageLoadEventSoon(HTMLImageLoader*);
    void dispatchImageLoadEventsNow();
    void removeImage(HTMLImageLoader*);
    virtual void timerEvent(QTimerEvent *);
    
    // Returns the owning element in the parent document.
    // Returns 0 if this is the top level document.
    ElementImpl *ownerElement();

    DOMString domain() const;
    void setDomain( const DOMString &newDomain, bool force = false ); // not part of the DOM
    
    // 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 DOMString &);
    
    void addElementById(const DOMString &elementId, ElementImpl *element);
    void removeElementById(const DOMString &elementId, ElementImpl *element);

    void addImageMap(HTMLMapElementImpl *);
    void removeImageMap(HTMLMapElementImpl *);
    HTMLMapElementImpl *getImageMap(const DOMString &URL) const;

    HTMLElementImpl* body();

    DOMString toString() const;
    
    bool execCommand(const DOMString &command, bool userInterface, const DOMString &value);
    bool queryCommandEnabled(const DOMString &command);
    bool queryCommandIndeterm(const DOMString &command);
    bool queryCommandState(const DOMString &command);
    bool queryCommandSupported(const DOMString &command);
    DOMString queryCommandValue(const DOMString &command);

#ifndef KHTML_NO_XBL
    // XBL methods
    XBL::XBLBindingManager* bindingManager() const { return m_bindingManager; }
#endif

signals:
    void finishedParsing();

protected:
    khtml::CSSStyleSelector *m_styleSelector;
    KHTMLView *m_view;
    QStringList m_state;

    khtml::DocLoader *m_docLoader;
    khtml::Tokenizer *m_tokenizer;
    QString m_url;
    QString m_baseURL;
    QString m_baseTarget;

    DocumentTypeImpl *m_doctype;
    DOMImplementationImpl *m_implementation;

    StyleSheetImpl *m_sheet;
    QString m_usersheet;
    QString m_printSheet;
    QStringList m_availableSheets;

    // 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;

    CSSStyleSheetImpl *m_elemSheet;

    QPaintDevice *m_paintDevice;
    QPaintDeviceMetrics *m_paintDeviceMetrics;
    ParseMode pMode;
    HTMLMode hMode;

    QColor m_textColor;

    NodeImpl *m_focusNode;
    NodeImpl *m_hoverNode;
    
    // ### replace me with something more efficient
    // in lookup and insertion.
    DOMStringImpl **m_elementNames;
    unsigned short m_elementNameAlloc;
    unsigned short m_elementNameCount;

    DOMStringImpl **m_attrNames;
    unsigned short m_attrNameAlloc;
    unsigned short m_attrNameCount;

    DOMStringImpl** m_namespaceURIs;
    unsigned short m_namespaceURIAlloc;
    unsigned short m_namespaceURICount;

    QPtrList<NodeIteratorImpl> m_nodeIterators;
    AbstractViewImpl *m_defaultView;

    unsigned short m_listenerTypes;
    StyleSheetListImpl* m_styleSheets;
    LocalStyleRefs m_localStyleRefs; // references to inlined style elements
    QPtrList<RegisteredEventListener> m_windowEventListeners;
    QPtrList<NodeImpl> m_maintainsState;

    QColor m_linkColor;
    QColor m_visitedLinkColor;
    QColor m_activeLinkColor;

    DOMString m_preferredStylesheetSet;

    bool m_loadingSheet;
    bool visuallyOrdered;
    bool m_bParsing;
    bool m_bAllDataReceived;
    bool m_docChanged;
    bool m_styleSelectorDirty;
    bool m_inStyleRecalc;
    bool m_usesDescendantRules;
    bool m_usesSiblingRules;

    DOMString m_title;
    
    RenderArena* m_renderArena;

#if APPLE_CHANGES
    KWQAccObjectCache* m_accCache;
#endif
    
    QPtrList<HTMLImageLoader> m_imageLoadEventDispatchSoonList;
    QPtrList<HTMLImageLoader> m_imageLoadEventDispatchingList;
    int m_imageLoadEventTimer;

    NodeImpl* m_cssTarget;
    
    bool m_processingLoadEvent;
    QTime m_startTime;
    bool m_overMinimumLayoutThreshold;
    
#ifndef KHTML_NO_XBL
    XBL::XBLBindingManager* m_bindingManager; // The access point through which documents and elements communicate with XBL.
#endif
    
    QMap<QString, HTMLMapElementImpl *> m_imageMapsByName;

#if APPLE_CHANGES
public:
    KWQSignal m_finishedParsing;

    static Document createInstance (DocumentImpl *impl);

    bool inPageCache();
    void setInPageCache(bool flag);
    void restoreRenderer(khtml::RenderObject* render);

    void passwordFieldAdded();
    void passwordFieldRemoved();
    bool hasPasswordField() const;

    void secureFormAdded();
    void secureFormRemoved();
    bool hasSecureForm() const;

    void setShouldCreateRenderers(bool f);
    bool shouldCreateRenderers();
    
    void setDecoder(khtml::Decoder *);
    khtml::Decoder *decoder() const { return m_decoder; }

private:
    JSEditor *jsEditor();

    JSEditor *m_jsEditor;
    bool relinquishesEditingFocus(NodeImpl *node);
    bool acceptsEditingFocus(NodeImpl *node);

    mutable DOMString m_domain;
    bool m_inPageCache;
    khtml::RenderObject *m_savedRenderer;
    int m_passwordFields;
    int m_secureForms;
    
    khtml::Decoder *m_decoder;

    QDict<ElementImpl> m_elementsById;
    
    QDict<ElementImpl> m_elementsByAccessKey;
    bool m_accessKeyDictValid;
 
    bool m_createRenderers;
#endif
};

class DocumentFragmentImpl : public NodeBaseImpl
{
public:
    DocumentFragmentImpl(DocumentPtr *doc);
    DocumentFragmentImpl(const DocumentFragmentImpl &other);

    // DOM methods overridden from  parent classes
    virtual DOMString nodeName() const;
    virtual unsigned short nodeType() const;
    virtual NodeImpl *cloneNode ( bool deep );

    // Other methods (not part of DOM)
    virtual bool childTypeAllowed( unsigned short type );

    virtual DOMString toString() const;
};


class DocumentTypeImpl : public NodeImpl
{
public:
    DocumentTypeImpl(DOMImplementationImpl *_implementation, DocumentPtr *doc,
                     const DOMString &qualifiedName, const DOMString &publicId,
                     const DOMString &systemId);
    ~DocumentTypeImpl();

    // DOM methods & attributes for DocumentType
    NamedNodeMapImpl *entities() const { return m_entities; }
    NamedNodeMapImpl *notations() const { return m_notations; }

    DOMString name() const { return m_qualifiedName; }
    DOMString publicId() const { return m_publicId; }
    DOMString systemId() const { return m_systemId; }
    DOMString internalSubset() const { return m_subset; }

    // DOM methods overridden from  parent classes
    virtual DOMString nodeName() const;
    virtual unsigned short nodeType() const;
    virtual bool childTypeAllowed( unsigned short type );
    virtual NodeImpl *cloneNode ( bool deep );

    // Other methods (not part of DOM)
    void setName(const DOMString& n) { m_qualifiedName = n; }
    void setPublicId(const DOMString& publicId) { m_publicId = publicId; }
    void setSystemId(const DOMString& systemId) { m_systemId = systemId; }
    DOMImplementationImpl *implementation() const { return m_implementation; }
    void copyFrom(const DocumentTypeImpl&);

    virtual DOMString toString() const;

#if APPLE_CHANGES
    static DocumentType createInstance (DocumentTypeImpl *impl);
#endif

protected:
    DOMImplementationImpl *m_implementation;
    NamedNodeMapImpl* m_entities;
    NamedNodeMapImpl* m_notations;

    DOMString m_qualifiedName;
    DOMString m_publicId;
    DOMString m_systemId;
    DOMString m_subset;
};

}; //namespace
#endif