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package org.openoffice.xforms;
import com.sun.star.xml.dom.DOMException;
import com.sun.star.xml.dom.XDocument;
import com.sun.star.xml.dom.XNode;
import com.sun.star.xml.dom.XNodeList;
import java.util.NoSuchElementException;
public class Instance
{
private Model m_model;
private XDocument m_domInstance;
protected Instance( Model _model, XDocument _domInstance )
{
m_model = _model;
m_domInstance = _domInstance;
}
/** creates a new element in the instance
*
* The element will be inserted immediately below the root node of the instance.
*
* @param _elementName
* the name of the to-be-created element
* @return
* the node of the newly created element
* @throws com.sun.star.xml.dom.DOMException
*/
public XNode createElement( String _elementName ) throws DOMException
{
return createElement( m_domInstance, _elementName, null );
}
/** creates a new element in the instance
*
* The element will be inserted immediately below a given XNode.
*
* @param _parentElement
* the node whose child shall be created
* @param _elementName
* the name of the to-be-created element
* @return
* the node of the newly created element
* @throws com.sun.star.xml.dom.DOMException
*/
public XNode createElement( XNode _parentElement, String _elementName ) throws DOMException
{
return createElement( _parentElement, _elementName, null );
}
/** creates a new element in the instance
*
* The element will be inserted immediately below a given XNode.
*
* @param _parentElement
* the node whose child shall be created
* @param _elementName
* the name of the to-be-created element
* @param _initialNodeValue
* the initial value to set at the node. Might be null, in this case no value is set.
* @return
* the node of the newly created element
* @throws com.sun.star.xml.dom.DOMException
*/
public XNode createElement( XNode _parentElement, String _elementName, String _initialNodeValue ) throws DOMException
{
XNode node = _parentElement.appendChild(
m_model.getUIHelper().createElement( _parentElement, _elementName )
);
if ( _initialNodeValue != null )
node.setNodeValue( _initialNodeValue );
return node;
}
/** removes a child of the root-level node from the instance
*
* @param _elementName
* the name of the to-be-removed child
*/
public XNode removeNode( String _elementName ) throws DOMException
{
return removeNode( m_domInstance, _elementName );
}
/** removes a node from the instance
*
* @param _parentElement
* the node whose child is to be removed
* @param _elementName
* the name of the to-be-removed child
*/
public XNode removeNode( XNode _parentElement, String _elementName ) throws DOMException
{
XNodeList nodes = _parentElement.getChildNodes();
for ( int i=0; i<nodes.getLength(); ++i )
{
XNode node = nodes.item(i);
if ( node.getLocalName().equals( _elementName ) )
{
_parentElement.removeChild( node );
return node;
}
}
throw new NoSuchElementException();
}
/** creates an attribute for the root node of the instance
*
* @param _attribName
* the name of the to-be-created attribute
* @return
* the DOM node, which has already been inserted into the DOM tree
* @throws com.sun.star.xml.dom.DOMException
*/
public XNode createAttribute( String _attribName ) throws DOMException
{
return createAttribute( m_domInstance, _attribName, null );
}
/** creates an attribute for the root node of the instance
*
* @param _attribName
* the name of the to-be-created attribute
* @param _initialNodeValue
* the initial value to set at the node. Might be null, in this case no value is set.
* @return
* the DOM node, which has already been inserted into the DOM tree
* @throws com.sun.star.xml.dom.DOMException
*/
public XNode createAttribute( String _attribName, String _initialNodeValue ) throws DOMException
{
return createAttribute( m_domInstance, _attribName, _initialNodeValue );
}
/** creates an attribute for the given node
*
* @param _parentElement
* the element at which the attribute should be created
* @param _attribName
* the name of the to-be-created attribute
* @return
* the DOM node, which has already been inserted into the DOM tree
* @throws com.sun.star.xml.dom.DOMException
*/
public XNode createAttribute( XNode _parentElement, String _attribName ) throws DOMException
{
return createAttribute( _parentElement, _attribName, null );
}
/** creates an attribute for the given node
*
* @param _parentElement
* the element at which the attribute should be created
* @param _attribName
* the name of the to-be-created attribute
* @param _initialNodeValue
* the initial value to set at the node. Might be null, in this case no value is set.
* @return
* the DOM node, which has already been inserted into the DOM tree
* @throws com.sun.star.xml.dom.DOMException
*/
public XNode createAttribute( XNode _parentElement, String _attribName, String _initialNodeValue ) throws DOMException
{
XNode node = _parentElement.appendChild(
m_model.getUIHelper().createAttribute( _parentElement, _attribName )
);
if ( _initialNodeValue != null )
node.setNodeValue( _initialNodeValue );
return node;
}
}
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