Java Node.DOCUMENT_FRAGMENT_NODE属性代码示例

/**
 * Finds the root container for the given node and determines
 * if that root container is legal with respect to the
 * DOM 2 specification.  At present, that means the root
 * container must be either an attribute, a document,
 * or a document fragment.
 */
private boolean hasLegalRootContainer( Node node )
{
	if ( node==null )
		return false;

	Node rootContainer = getRootContainer( node );
	switch( rootContainer.getNodeType() )
	{
	case Node.ATTRIBUTE_NODE:
	case Node.DOCUMENT_NODE:
	case Node.DOCUMENT_FRAGMENT_NODE:
		return true;
	}
	return false;
}
 

/**
 * Returns true IFF the given node can be contained by
 * a range.
 */
private boolean isLegalContainedNode( Node node )
{
	if ( node==null )
		return false;
	switch( node.getNodeType() )
	{
	case Node.DOCUMENT_NODE:
	case Node.DOCUMENT_FRAGMENT_NODE:
	case Node.ATTRIBUTE_NODE:
	case Node.ENTITY_NODE:
	case Node.NOTATION_NODE:
		return false;
	}
	return true;
}
 

/**
 * 
 * DOM Level 3 - Experimental:
 * Look up the prefix associated to the given namespace URI, starting from this node.
 * 
 * @param namespaceURI
 * @return the prefix for the namespace
 */
public String lookupPrefix(String namespaceURI){
    
    // REVISIT: When Namespaces 1.1 comes out this may not be true
    // Prefix can't be bound to null namespace
    if (namespaceURI == null) {
        return null;
    }

    short type = this.getNodeType();

    switch (type) {
    case Node.ELEMENT_NODE: {
            this.getNamespaceURI(); // to flip out children 
            return lookupNamespacePrefix(namespaceURI, (ElementImpl)this);
        }
    case Node.DOCUMENT_NODE:{
            return((NodeImpl)((Document)this).getDocumentElement()).lookupPrefix(namespaceURI);
        }

    case Node.ENTITY_NODE :
    case Node.NOTATION_NODE:
    case Node.DOCUMENT_FRAGMENT_NODE:
    case Node.DOCUMENT_TYPE_NODE:
        // type is unknown
        return null;
    case Node.ATTRIBUTE_NODE:{
            if (this.ownerNode.getNodeType() == Node.ELEMENT_NODE) {
                return ownerNode.lookupPrefix(namespaceURI);

            }
            return null;
        }
    default:{   
            NodeImpl ancestor = (NodeImpl)getElementAncestor(this);
            if (ancestor != null) {
                return ancestor.lookupPrefix(namespaceURI);
            }
            return null;
        }

    }
}
 

public void surroundContents(Node newParent)
    throws DOMException, RangeException
{
    if (newParent==null) return;
    int type = newParent.getNodeType();
    
    if (fDocument.errorChecking) {
        if (fDetach) {
            throw new DOMException(
                    DOMException.INVALID_STATE_ERR, 
                    DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_STATE_ERR", null));
        }
        if (type == Node.ATTRIBUTE_NODE
                || type == Node.ENTITY_NODE
                || type == Node.NOTATION_NODE
                || type == Node.DOCUMENT_TYPE_NODE
                || type == Node.DOCUMENT_NODE
                || type == Node.DOCUMENT_FRAGMENT_NODE)
        {
            throw new RangeExceptionImpl(
                    RangeException.INVALID_NODE_TYPE_ERR, 
                    DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_NODE_TYPE_ERR", null));
        }
    }
    
    Node realStart = fStartContainer;
    Node realEnd = fEndContainer;
    if (fStartContainer.getNodeType() == Node.TEXT_NODE) {
        realStart = fStartContainer.getParentNode();
    }
    if (fEndContainer.getNodeType() == Node.TEXT_NODE) {
        realEnd = fEndContainer.getParentNode();
    }
        
    if (realStart != realEnd) {
       	throw new RangeExceptionImpl(
		RangeException.BAD_BOUNDARYPOINTS_ERR, 
            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "BAD_BOUNDARYPOINTS_ERR", null));
    }

	DocumentFragment frag = extractContents();
	insertNode(newParent);
	newParent.appendChild(frag);
	selectNode(newParent);
}
 

/** 
 * A short integer indicating what type of node this is. The named
 * constants for this value are defined in the org.w3c.dom.Node interface.
 */
public short getNodeType() {
    return Node.DOCUMENT_FRAGMENT_NODE;
}