| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.contrib.tree.simple; |
| |
| import java.io.Serializable; |
| import java.util.Iterator; |
| |
| import javax.swing.tree.TreePath; |
| |
| import org.apache.tapestry.contrib.tree.model.ITreeDataModel; |
| import org.apache.tapestry.contrib.tree.model.ITreeNode; |
| |
| /** |
| * @author ceco |
| * @version $Id$ |
| */ |
| public class SimpleTreeDataModel implements ITreeDataModel, Serializable { |
| |
| protected ITreeNode m_objRootNode; |
| /** |
| * Constructor for SimpleTreeDataModel. |
| */ |
| public SimpleTreeDataModel(ITreeNode objRootNode) { |
| super(); |
| m_objRootNode = objRootNode; |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.tree.model.ITreeDataModel#getRoot() |
| */ |
| public Object getRoot() { |
| return m_objRootNode; |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.tree.model.ITreeDataModel#getChildCount(Object) |
| */ |
| public int getChildCount(Object objParent) { |
| ITreeNode objParentNode = (ITreeNode)objParent; |
| |
| return objParentNode.getChildCount(); |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.tree.model.ITreeDataModel#getChildren(Object) |
| */ |
| public Iterator getChildren(Object objParent) { |
| ITreeNode objParentNode = (ITreeNode)objParent; |
| return objParentNode.getChildren().iterator(); |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.tree.model.ITreeDataModel#getObject(Object) |
| */ |
| public Object getObject(Object objUniqueKey) { |
| if(objUniqueKey != null) { |
| TreePath objPath = (TreePath)objUniqueKey; |
| return objPath.getLastPathComponent(); |
| } |
| return null; |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.tree.model.ITreeDataModel#getUniqueKey(Object, Object) |
| */ |
| public Object getUniqueKey(Object objTarget, Object objParentUniqueKey) { |
| TreePath objPath = (TreePath)objParentUniqueKey; |
| Object objTargetUID = null; |
| if(objPath != null){ |
| objTargetUID = objPath.pathByAddingChild(objTarget); |
| }else{ |
| objTargetUID = new TreePath(objTarget); |
| } |
| return objTargetUID; |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.tree.model.ITreeDataModel#isAncestorOf(Object, Object) |
| */ |
| public boolean isAncestorOf(Object objTargetUniqueKey, Object objParentUniqueKey) { |
| TreePath objParentPath = (TreePath)objParentUniqueKey; |
| TreePath objTargetPath = (TreePath)objTargetUniqueKey; |
| boolean bResult = objParentPath.isDescendant(objTargetPath); |
| return bResult; |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.tree.model.ITreeDataModel#getParentUniqueKey |
| */ |
| public Object getParentUniqueKey(Object objChildUniqueKey) { |
| TreePath objChildPath = (TreePath)objChildUniqueKey; |
| TreePath objParentPath = objChildPath.getParentPath(); |
| if(objParentPath == null) |
| return null; |
| return objParentPath.getLastPathComponent(); |
| } |
| |
| } |