dom_docimpl.cpp

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

{
    Id id = getId( NodeImpl::AttributeId, tagName.implementation(),
                  false /* allocate */, isHTMLDocument(), pExceptioncode);
    if ( pExceptioncode && *pExceptioncode )
        return 0;
    AttrImpl* attr = new AttrImpl( 0, document, id, DOMString("").implementation());
    attr->setHTMLCompat( htmlMode() != XHtml );
    return attr;
}

DocumentFragmentImpl *DocumentImpl::createDocumentFragment(  )
{
    return new DocumentFragmentImpl( docPtr() );
}

CommentImpl *DocumentImpl::createComment ( DOMStringImpl* data )
{
    return new CommentImpl( docPtr(), data );
}

CDATASectionImpl *DocumentImpl::createCDATASection ( DOMStringImpl* data )
{
    return new CDATASectionImpl( docPtr(), data );
}

ProcessingInstructionImpl *DocumentImpl::createProcessingInstruction ( const DOMString &target, DOMStringImpl* data )
{
    return new ProcessingInstructionImpl( docPtr(),target,data);
}

EntityReferenceImpl *DocumentImpl::createEntityReference ( const DOMString &name )
{
    return new EntityReferenceImpl(docPtr(), name.implementation());
}

NodeImpl *DocumentImpl::importNode(NodeImpl *importedNode, bool deep, int &exceptioncode)
{
    NodeImpl *result = 0;

    // Not mentioned in spec: throw NOT_FOUND_ERR if evt is null
    if (!importedNode) {
        exceptioncode = DOMException::NOT_FOUND_ERR;
        return 0;
    }

    if(importedNode->nodeType() == Node::ELEMENT_NODE)
    {
        // Why not use cloneNode?
	ElementImpl *otherElem = static_cast<ElementImpl*>(importedNode);
	NamedAttrMapImpl *otherMap = static_cast<ElementImpl *>(importedNode)->attributes(true);

	ElementImpl *tempElementImpl;
	if (!importedNode->localName().isNull())
	    tempElementImpl = createElementNS(otherElem->namespaceURI(),otherElem->nodeName());
	else
	    tempElementImpl = createElement(otherElem->nodeName());
	result = tempElementImpl;


	if(otherMap) {
	    for(unsigned long i = 0; i < otherMap->length(); i++)
	    {
		AttrImpl *otherAttr = otherMap->attrAt(i)->createAttr(otherElem,otherElem->docPtr());

		if (!otherAttr->localName().isNull()) {
		    // attr was created via createElementNS()
		    tempElementImpl->setAttributeNS(otherAttr->namespaceURI(),
						    otherAttr->name(),
						    otherAttr->nodeValue(),
						  exceptioncode);
		}
		else {
		    // attr was created via createElement()
		    tempElementImpl->setAttribute(otherAttr->id(),
                                                  otherAttr->nodeValue(),
                                                  otherAttr->name(),
						  exceptioncode);
		}

		if(exceptioncode != 0)
		    break; // ### properly cleanup here
	    }
	}
    }
    else if(importedNode->nodeType() == Node::TEXT_NODE)
    {
	result = createTextNode(static_cast<TextImpl*>(importedNode)->string());
	deep = false;
    }
    else if(importedNode->nodeType() == Node::CDATA_SECTION_NODE)
    {
	result = createCDATASection(static_cast<CDATASectionImpl*>(importedNode)->string());
	deep = false;
    }
    else if(importedNode->nodeType() == Node::ENTITY_REFERENCE_NODE)
	result = createEntityReference(importedNode->nodeName());
    else if(importedNode->nodeType() == Node::PROCESSING_INSTRUCTION_NODE)
    {
	result = createProcessingInstruction(importedNode->nodeName(), importedNode->nodeValue().implementation());
	deep = false;
    }
    else if(importedNode->nodeType() == Node::COMMENT_NODE)
    {
	result = createComment(static_cast<CommentImpl*>(importedNode)->string());
	deep = false;
    }
    else
	exceptioncode = DOMException::NOT_SUPPORTED_ERR;

    if(deep)
    {
	for(Node n = importedNode->firstChild(); !n.isNull(); n = n.nextSibling())
	    result->appendChild(importNode(n.handle(), true, exceptioncode), exceptioncode);
    }

    return result;
}

ElementImpl *DocumentImpl::createElementNS( const DOMString &_namespaceURI, const DOMString &_qualifiedName, int* pExceptioncode )
{
    ElementImpl *e = 0;
    int colonPos = -2;
    // check NAMESPACE_ERR/INVALID_CHARACTER_ERR
    if (pExceptioncode && !checkQualifiedName(_qualifiedName, _namespaceURI, &colonPos,
                                              false/*nameCanBeNull*/, false/*nameCanBeEmpty*/,
                                              pExceptioncode))
        return 0;
    DOMString prefix, localName;
    splitPrefixLocalName(_qualifiedName.implementation(), prefix, localName, colonPos);

    if ((isHTMLDocument() && _namespaceURI.isNull()) ||
        (_namespaceURI == XHTML_NAMESPACE && localName == localName.lower())) {
        e = createHTMLElement(localName);
        if (e) {
            int _exceptioncode = 0;
            if (!prefix.isNull())
                e->setPrefix(prefix, _exceptioncode);
            if ( _exceptioncode ) {
                 if ( pExceptioncode ) *pExceptioncode = _exceptioncode;
                 delete e;
                 return 0;
            }
            e->setHTMLCompat( _namespaceURI.isNull() && htmlMode() != XHtml );
        }
    }
    if (!e) {
        Id id = getId(NodeImpl::ElementId, _namespaceURI.implementation(), prefix.implementation(),
                      localName.implementation(), false, false /*HTML already looked up*/);
        e = new XMLElementImpl( document, id, prefix.implementation() );
    }

    return e;
}

AttrImpl *DocumentImpl::createAttributeNS( const DOMString &_namespaceURI,
                                           const DOMString &_qualifiedName, int* pExceptioncode)
{
    int colonPos = -2;
    // check NAMESPACE_ERR/INVALID_CHARACTER_ERR
    if (pExceptioncode && !checkQualifiedName(_qualifiedName, _namespaceURI, &colonPos,
                                              false/*nameCanBeNull*/, false/*nameCanBeEmpty*/,
                                              pExceptioncode))
        return 0;
    DOMString prefix, localName;
    splitPrefixLocalName(_qualifiedName.implementation(), prefix, localName, colonPos);
    Id id = getId(NodeImpl::AttributeId, _namespaceURI.implementation(), prefix.implementation(),
                  localName.implementation(), false, true /*lookupHTML*/);
    AttrImpl* attr = new AttrImpl(0, document, id, DOMString("").implementation(),
                         prefix.implementation());
    attr->setHTMLCompat( _namespaceURI.isNull() && htmlMode() != XHtml );
    return attr;
}

ElementImpl *DocumentImpl::getElementById( const DOMString &elementId ) const
{
    QString stringKey = elementId.string();

    ElementMappingCache::ItemInfo* info = m_getElementByIdCache.get(stringKey);

    if (!info) 
        return 0;

    //See if cache has an unambiguous answer.
    if (info->nd)
        return info->nd;

    //Now we actually have to walk.
    QPtrStack<NodeImpl> nodeStack;
    NodeImpl *current = _first;

    while(1)
    {
        if(!current)
        {
            if(nodeStack.isEmpty()) break;
            current = nodeStack.pop();
            current = current->nextSibling();
        }
        else
        {
            if(current->isElementNode())
            {
                ElementImpl *e = static_cast<ElementImpl *>(current);
                if(e->getAttribute(ATTR_ID) == elementId) {
                    info->nd = e;
                    return e;
                }
            }

            NodeImpl *child = current->firstChild();
            if(child)
            {
                nodeStack.push(current);
                current = child;
            }
            else
            {
                current = current->nextSibling();
            }
        }
    }

    assert(0); //If there is no item with such an ID, we should never get here

    //kdDebug() << "WARNING: *DocumentImpl::getElementById not found " << elementId.string() << endl;

    return 0;
}

void DocumentImpl::setTitle(const DOMString& _title)
{
    if (_title == m_title && !m_title.isNull()) return;

    m_title = _title;

    QString titleStr = m_title.string();
    for (unsigned int i = 0; i < titleStr.length(); ++i)
        if (titleStr[i] < ' ')
            titleStr[i] = ' ';
    titleStr = titleStr.simplifyWhiteSpace();
    titleStr.compose();
    if ( view() && !view()->part()->parentPart() ) {
	if (titleStr.isNull() || titleStr.isEmpty()) {
	    // empty title... set window caption as the URL
	    KURL url = m_url;
	    url.setRef(QString::null);
	    url.setQuery(QString::null);
	    titleStr = url.prettyURL();
	}

	emit view()->part()->setWindowCaption( KStringHandler::csqueeze( titleStr, 128 ) );
    }
}

DOMString DocumentImpl::nodeName() const
{
    return "#document";
}

unsigned short DocumentImpl::nodeType() const
{
    return Node::DOCUMENT_NODE;
}

ElementImpl *DocumentImpl::createHTMLElement( const DOMString &name )
{
    uint id = khtml::getTagID( name.string().lower().latin1(), name.string().length() );

    ElementImpl *n = 0;
    switch(id)
    {
    case ID_HTML:
        n = new HTMLHtmlElementImpl(docPtr());
        break;
    case ID_HEAD:
        n = new HTMLHeadElementImpl(docPtr());
        break;
    case ID_BODY:
        n = new HTMLBodyElementImpl(docPtr());
        break;

// head elements
    case ID_BASE:
        n = new HTMLBaseElementImpl(docPtr());
        break;
    case ID_LINK:
        n = new HTMLLinkElementImpl(docPtr());
        break;
    case ID_META:
        n = new HTMLMetaElementImpl(docPtr());
        break;
    case ID_STYLE:
        n = new HTMLStyleElementImpl(docPtr());
        break;
    case ID_TITLE:
        n = new HTMLTitleElementImpl(docPtr());
        break;

// frames
    case ID_FRAME:
        n = new HTMLFrameElementImpl(docPtr());
        break;
    case ID_FRAMESET:
        n = new HTMLFrameSetElementImpl(docPtr());
        break;
    case ID_IFRAME:
        n = new HTMLIFrameElementImpl(docPtr());
        break;

// form elements
// ### FIXME: we need a way to set form dependency after we have made the form elements
    case ID_FORM:
            n = new HTMLFormElementImpl(docPtr(), false);
        break;
    case ID_BUTTON:
            n = new HTMLButtonElementImpl(docPtr());
        break;
    case ID_FIELDSET:
            n = new HTMLFieldSetElementImpl(docPtr());
        break;
    case ID_INPUT:
            n = new HTMLInputElementImpl(docPtr());
        break;
    case ID_ISINDEX:
            n = new HTMLIsIndexElementImpl(docPtr());
        break;
    case ID_LABEL:
            n = new HTMLLabelElementImpl(docPtr());
        break;
    case ID_LEGEND:
            n = new HTMLLegendElementImpl(docPtr());
        break;
    case ID_OPTGROUP:
            n = new HTMLOptGroupElementImpl(docPtr());
        break;
    case ID_OPTION:
            n = new HTMLOptionElementImpl(docPtr());
        break;
    case ID_SELECT:
            n = new HTMLSelectElementImpl(docPtr());
        break;
    case ID_TEXTAREA:
            n = new HTMLTextAreaElementImpl(docPtr());
        break;

// lists
    case ID_DL:
        n = new HTMLDListElementImpl(docPtr());
        break;
    case ID_DD:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;
    case ID_DT:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;
    case ID_UL:
        n = new HTMLUListElementImpl(docPtr());
        break;
    case ID_OL:
        n = new HTMLOListElementImpl(docPtr());
        break;
    case ID_DIR:
        n = new HTMLDirectoryElementImpl(docPtr());
        break;
    case ID_MENU:
        n = new HTMLMenuElementImpl(docPtr());
        break;
    case ID_LI:
        n = new HTMLLIElementImpl(docPtr());
        break;

// formatting elements (block)
    case ID_DIV:
    case ID_P:
        n = new HTMLDivElementImpl( docPtr(), id );
        break;
    case ID_BLOCKQUOTE:
    case ID_H1:
    case ID_H2:
    case ID_H3:
    case ID_H4:
    case ID_H5:
    case ID_H6:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;
    case ID_HR:
        n = new HTMLHRElementImpl(docPtr());
        break;
    case ID_PRE:
        n = new HTMLPreElementImpl(docPtr(), id);
        break;

// font stuff
    case ID_BASEFONT:
        n = new HTMLBaseFontElementImpl(docPtr());
        break;
    case ID_FONT:
        n = new HTMLFontElementImpl(docPtr());
        break;

// ins/del
    case ID_DEL:
    case ID_INS:
        n = new HTMLGenericElementImpl(docPtr(), id);
        break;

// anchor
    case ID_A:
        n = new HTMLAnchorElementImpl(docPtr());
        break;

// images
    case ID_IMG:
        n = new HTMLImageElementImpl(docPtr());
        break;
    case ID_MAP:
        n = new HTMLMapElementImpl(docPtr());
        /*n = map;*/
        break;
    case ID_AREA:
        n = new HTMLAreaElementImpl(docPtr());
        break;

// objects, applets and scripts
    case ID_APPLET:
        n = new HTMLAppletElementImpl(docPtr());
        break;
    case ID_OBJECT:
        n = new HTMLObjectElementImpl(docPtr());
        break;
    case ID_EMBED:
        n = new HTMLEmbedElementImpl(docPtr());
        break;
    case ID_PARAM:
        n = new HTMLParamElementImpl(docPtr());
        break;