tohtmlstream.java

来自「JAVA的一些源码 JAVA2 STANDARD EDITION DEVELO」· Java 代码 · 共 1,886 行 · 第 1/5 页

        elemDesc.setAttr("DISABLED", ElemDesc.ATTREMPTY);
        elemDesc.setAttr("MULTIPLE", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("OPTGROUP");

        elemDesc.setAttr("DISABLED", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("OPTION");

        elemDesc.setAttr("SELECTED", ElemDesc.ATTREMPTY);
        elemDesc.setAttr("DISABLED", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("TEXTAREA");

        elemDesc.setAttr("DISABLED", ElemDesc.ATTREMPTY);
        elemDesc.setAttr("READONLY", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("BUTTON");

        elemDesc.setAttr("DISABLED", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("SCRIPT");

        elemDesc.setAttr("SRC", ElemDesc.ATTRURL);
        elemDesc.setAttr("FOR", ElemDesc.ATTRURL);
        elemDesc.setAttr("DEFER", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("IMG");

        elemDesc.setAttr("SRC", ElemDesc.ATTRURL);
        elemDesc.setAttr("LONGDESC", ElemDesc.ATTRURL);
        elemDesc.setAttr("USEMAP", ElemDesc.ATTRURL);
        elemDesc.setAttr("ISMAP", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("OBJECT");

        elemDesc.setAttr("CLASSID", ElemDesc.ATTRURL);
        elemDesc.setAttr("CODEBASE", ElemDesc.ATTRURL);
        elemDesc.setAttr("DATA", ElemDesc.ATTRURL);
        elemDesc.setAttr("ARCHIVE", ElemDesc.ATTRURL);
        elemDesc.setAttr("USEMAP", ElemDesc.ATTRURL);
        elemDesc.setAttr("DECLARE", ElemDesc.ATTREMPTY);

        elemDesc = (ElemDesc) m_elementFlags.get("FORM");

        elemDesc.setAttr("ACTION", ElemDesc.ATTRURL);

        elemDesc = (ElemDesc) m_elementFlags.get("HEAD");

        elemDesc.setAttr("PROFILE", ElemDesc.ATTRURL);

        // Attribution to: "Voytenko, Dimitry" <[e-mail]>
        elemDesc = (ElemDesc) m_elementFlags.get("FRAME");

        elemDesc.setAttr("SRC", ElemDesc.ATTRURL);
        elemDesc.setAttr("LONGDESC", ElemDesc.ATTRURL);

        // HTML 4.0, section 16.5
        elemDesc = (ElemDesc) m_elementFlags.get("IFRAME");

        elemDesc.setAttr("SRC", ElemDesc.ATTRURL);
        elemDesc.setAttr("LONGDESC", ElemDesc.ATTRURL);

        // NS4 extensions
        elemDesc = (ElemDesc) m_elementFlags.get("LAYER");

        elemDesc.setAttr("SRC", ElemDesc.ATTRURL);

        elemDesc = (ElemDesc) m_elementFlags.get("ILAYER");

        elemDesc.setAttr("SRC", ElemDesc.ATTRURL);

        elemDesc = (ElemDesc) m_elementFlags.get("DIV");

        elemDesc.setAttr("SRC", ElemDesc.ATTRURL);
    }

    /**
     * Dummy element for elements not found.
     */
    static private final ElemDesc m_dummy = new ElemDesc(0 | ElemDesc.BLOCK);

    /** True if URLs should be specially escaped with the %xx form. */
    private boolean m_specialEscapeURLs = true;

    /** True if the META tag should be omitted. */
    private boolean m_omitMetaTag = false;

    /**
     * Tells if the formatter should use special URL escaping.
     *
     * @param bool True if URLs should be specially escaped with the %xx form.
     */
    public void setSpecialEscapeURLs(boolean bool)
    {
        m_specialEscapeURLs = bool;
    }

    /**
     * Tells if the formatter should omit the META tag.
     *
     * @param bool True if the META tag should be omitted.
     */
    public void setOmitMetaTag(boolean bool)
    {
        m_omitMetaTag = bool;
    }

    /**
     * Specifies an output format for this serializer. It the
     * serializer has already been associated with an output format,
     * it will switch to the new format. This method should not be
     * called while the serializer is in the process of serializing
     * a document.
     *
     * @param format The output format to use
     */
    public void setOutputFormat(Properties format)
    {
 
        m_specialEscapeURLs =
            OutputPropertyUtils.getBooleanProperty(
                OutputPropertiesFactory.S_USE_URL_ESCAPING,
                format);

        m_omitMetaTag =
            OutputPropertyUtils.getBooleanProperty(
                OutputPropertiesFactory.S_OMIT_META_TAG,
                format);

        super.setOutputFormat(format);
    }

    /**
     * Tells if the formatter should use special URL escaping.
     *
     * @return True if URLs should be specially escaped with the %xx form.
     */
    private final boolean getSpecialEscapeURLs()
    {
        return m_specialEscapeURLs;
    }

    /**
     * Tells if the formatter should omit the META tag.
     *
     * @return True if the META tag should be omitted.
     */
    private final boolean getOmitMetaTag()
    {
        return m_omitMetaTag;
    }

    /**
     * Get a description of the given element.
     *
     * @param name non-null name of element, case insensitive.
     *
     * @return non-null reference to ElemDesc, which may be m_dummy if no 
     *         element description matches the given name.
     */
    public static final ElemDesc getElemDesc(String name)
    {
        /* this method used to return m_dummy  when name was null
         * but now it doesn't check and and requires non-null name.
         */
        Object obj = m_elementFlags.get(name);
        if (null != obj)
            return (ElemDesc)obj;
        return m_dummy;
    }

    /**
     * Default constructor.
     */
    public ToHTMLStream()
    {

        super();
        m_charInfo = m_htmlcharInfo;
        // initialize namespaces
        m_prefixMap = new NamespaceMappings();

    }

    /** The name of the current element. */
//    private String m_currentElementName = null;

    /**
     * Receive notification of the beginning of a document.
     *
     * @throws org.xml.sax.SAXException Any SAX exception, possibly
     *            wrapping another exception.
     *
     * @throws org.xml.sax.SAXException
     */
    protected void startDocumentInternal() throws org.xml.sax.SAXException
    {
        super.startDocumentInternal();

        m_needToCallStartDocument = false; 
        m_needToOutputDocTypeDecl = true;
        m_startNewLine = false;
        setOmitXMLDeclaration(true);

        if (true == m_needToOutputDocTypeDecl)
        {
            String doctypeSystem = getDoctypeSystem();
            String doctypePublic = getDoctypePublic();
            if ((null != doctypeSystem) || (null != doctypePublic))
            {
                final java.io.Writer writer = m_writer;
                try
                {
                writer.write("<!DOCTYPE HTML");

                if (null != doctypePublic)
                {
                    writer.write(" PUBLIC \"");
                    writer.write(doctypePublic);
                    writer.write('"');
                }

                if (null != doctypeSystem)
                {
                    if (null == doctypePublic)
                        writer.write(" SYSTEM \"");
                    else
                        writer.write('"');

                    writer.write(doctypeSystem);
                    writer.write('"');
                }

                writer.write('>');
                outputLineSep();
                }
                catch(IOException e)
                {
                    throw new SAXException(e);
                }
            }
        }

        m_needToOutputDocTypeDecl = false;
    }

    /**
     * Receive notification of the end of a document. 
     *
     * @throws org.xml.sax.SAXException Any SAX exception, possibly
     *            wrapping another exception.
     *
     * @throws org.xml.sax.SAXException
     */
    public final void endDocument() throws org.xml.sax.SAXException
    {
        
        flushPending();
        if (m_doIndent && !m_isprevtext)
        {
            try
            {
            outputLineSep();
            }
            catch(IOException e)
            {
                throw new SAXException(e);
            }
        }

        flushWriter();
        if (m_tracer != null)
            super.fireEndDoc();
    }

    /**
     *  Receive notification of the beginning of an element.
     *
     *
     *  @param namespaceURI
     *  @param localName
     *  @param name The element type name.
     *  @param atts The attributes attached to the element, if any.
     *  @throws org.xml.sax.SAXException Any SAX exception, possibly
     *             wrapping another exception.
     *  @see #endElement
     *  @see org.xml.sax.AttributeList
     */
    public void startElement(
        String namespaceURI,
        String localName,
        String name,
        Attributes atts)
        throws org.xml.sax.SAXException
    {

        ElemContext elemContext = m_elemContext;

        // clean up any pending things first
        if (elemContext.m_startTagOpen)
        {
            closeStartTag();
            elemContext.m_startTagOpen = false;
        }
        else if (m_cdataTagOpen)
        {
            closeCDATA();
            m_cdataTagOpen = false;
        }
        else if (m_needToCallStartDocument)
        {
            startDocumentInternal();
            m_needToCallStartDocument = false;
        }


        // if this element has a namespace then treat it like XML
        if (null != namespaceURI && namespaceURI.length() > 0)
        {
            super.startElement(namespaceURI, localName, name, atts);

            return;
        }
        
        try
        {
            ElemDesc elemDesc = getElemDesc(name);
            int elemFlags = elemDesc.getFlags();

            // deal with indentation issues first
            if (m_doIndent)
            {

                boolean isBlockElement = (elemFlags & ElemDesc.BLOCK) != 0;
                if (m_ispreserve)
                    m_ispreserve = false;
                else if (
                    (null != elemContext.m_elementName)
                    && (!m_inBlockElem
                        || isBlockElement) /* && !isWhiteSpaceSensitive */
                    )
                {
                    m_startNewLine = true;

                    indent();

                }
                m_inBlockElem = !isBlockElement;
            }

            // save any attributes for later processing
            if (atts != null)
                addAttributes(atts);            

            m_isprevtext = false;
            final java.io.Writer writer = m_writer;
            writer.write('<');
            writer.write(name);



            if (m_tracer != null)
                firePseudoAttributes();
            
            if ((elemFlags & ElemDesc.EMPTY) != 0)  
            {
                // an optimization for elements which are expected
                // to be empty.
                m_elemContext = elemContext.push();
                /* XSLTC sometimes calls namespaceAfterStartElement()
                 * so we need to remember the name
                 */
                m_elemContext.m_elementName = name;
                m_elemContext.m_elementDesc = elemDesc;
                return;                
            } 
            else