| /* | ||
| * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved. | ||
| * | ||
| * This software is open source. | ||
| * See the bottom of this file for the licence. | ||
| * | ||
| * $Id: BranchTreeNode.java,v 1.8 2004/06/25 08:03:40 maartenc Exp $ | ||
| */ | ||
| package org.dom4j.swing; | ||
| import java.util.ArrayList; | ||
| import java.util.Enumeration; | ||
| import java.util.List; | ||
| import javax.swing.tree.TreeNode; | ||
| import org.dom4j.Branch; | ||
| import org.dom4j.CharacterData; | ||
| import org.dom4j.Node; | ||
| /** <p><code>BranchTreeNode</code> implements the Swing TreeNode interface | ||
| * to bind dom4j XML Branch nodes (i.e. Document and Element nodes) to a Swing TreeModel.</p> | ||
| * | ||
| * @author <a href="mailto:james.strachan@metastuff.com">James Strachan</a> (james.strachan@metastuff.com) | ||
| * @author Jakob Jenkov | ||
| * @version $Revision: 1.8 $ | ||
| */ | ||
| public class BranchTreeNode extends LeafTreeNode { | ||
| /** Stores the child tree nodes */ | ||
| protected List children; | ||
| 0x | public BranchTreeNode() { | |
| 0x | } | |
| public BranchTreeNode(Branch xmlNode) { | ||
| 0x | super(xmlNode); | |
| 0x | } | |
| public BranchTreeNode(TreeNode parent, Branch xmlNode) { | ||
| 0x | super( parent, xmlNode ); | |
| 0x | } | |
| // TreeNode methods | ||
| //------------------------------------------------------------------------- | ||
| public Enumeration children() { | ||
| 0x | return new Enumeration() { | |
| int index = -1; | ||
| public boolean hasMoreElements() { | ||
| return index + 1 < getChildCount(); | ||
| } | ||
| public Object nextElement() { | ||
| return getChildAt( ++index ); | ||
| } | ||
| }; | ||
| } | ||
| public boolean getAllowsChildren() { | ||
| 0x | return true; | |
| } | ||
| public TreeNode getChildAt(int childIndex) { | ||
| 0x | return (TreeNode) getChildList().get(childIndex); | |
| } | ||
| public int getChildCount() { | ||
| 0x | return getChildList().size(); | |
| } | ||
| public int getIndex(TreeNode node) { | ||
| 0x | return getChildList().indexOf(node); | |
| } | ||
| public boolean isLeaf() { | ||
| 0/2 0x | return getXmlBranch().nodeCount() <= 0; | |
| } | ||
| public String toString() { | ||
| 0x | return xmlNode.getName(); | |
| } | ||
| // Implementation methods | ||
| //------------------------------------------------------------------------- | ||
| /** Uses Lazy Initialization pattern to create a List of children */ | ||
| protected List getChildList() { | ||
| // for now lets just create the children once, the first time they | ||
| // are asked for. | ||
| // XXXX - we may wish to detect inconsistencies here.... | ||
| 0/2 0x | if ( children == null ) { | |
| 0x | children = createChildList(); | |
| } | ||
| 0x | return children; | |
| } | ||
| /** Factory method to create List of children TreeNodes */ | ||
| protected List createChildList() { | ||
| // add attributes and content as children? | ||
| 0x | Branch branch = getXmlBranch(); | |
| 0x | int size = branch.nodeCount(); | |
| 0x | List children = new ArrayList( size ); | |
| 0/2 0x | for ( int i = 0; i < size; i++ ) { | |
| 0x | Node node = branch.node(i); | |
| // ignore whitespace text nodes | ||
| 0/2 0x | if ( node instanceof CharacterData ) { | |
| 0x | String text = node.getText(); | |
| 0/2 0x | if ( text == null ) { | |
| 0x | continue; | |
| } | ||
| 0x | text = text.trim(); | |
| 0/2 0x | if ( text.length() <= 0 ) { | |
| 0x | continue; | |
| } | ||
| } | ||
| 0x | children.add( createChildTreeNode( node ) ); | |
| } | ||
| 0x | return children; | |
| } | ||
| /** Factory method to create child tree nodes for a given XML node type | ||
| */ | ||
| protected TreeNode createChildTreeNode( Node xmlNode ) { | ||
| 0/2 0x | if ( xmlNode instanceof Branch ) { | |
| 0x | return new BranchTreeNode( this, (Branch) xmlNode ); | |
| } | ||
| else { | ||
| 0x | return new LeafTreeNode( this, xmlNode ); | |
| } | ||
| } | ||
| protected Branch getXmlBranch() { | ||
| 0x | return (Branch) xmlNode; | |
| } | ||
| } | ||
| /* | ||
| * Redistribution and use of this software and associated documentation | ||
| * ("Software"), with or without modification, are permitted provided | ||
| * that the following conditions are met: | ||
| * | ||
| * 1. Redistributions of source code must retain copyright | ||
| * statements and notices. Redistributions must also contain a | ||
| * copy of this document. | ||
| * | ||
| * 2. Redistributions in binary form must reproduce the | ||
| * above copyright notice, this list of conditions and the | ||
| * following disclaimer in the documentation and/or other | ||
| * materials provided with the distribution. | ||
| * | ||
| * 3. The name "DOM4J" must not be used to endorse or promote | ||
| * products derived from this Software without prior written | ||
| * permission of MetaStuff, Ltd. For written permission, | ||
| * please contact dom4j-info@metastuff.com. | ||
| * | ||
| * 4. Products derived from this Software may not be called "DOM4J" | ||
| * nor may "DOM4J" appear in their names without prior written | ||
| * permission of MetaStuff, Ltd. DOM4J is a registered | ||
| * trademark of MetaStuff, Ltd. | ||
| * | ||
| * 5. Due credit should be given to the DOM4J Project - | ||
| * http://www.dom4j.org | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS | ||
| * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT | ||
| * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | ||
| * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | ||
| * METASTUFF, LTD. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | ||
| * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | ||
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | ||
| * OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| * | ||
| * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved. | ||
| * | ||
| * $Id: BranchTreeNode.java,v 1.8 2004/06/25 08:03:40 maartenc Exp $ | ||
| */ |