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package org.apache.tapestry.contrib.tree.simple; |
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import java.io.Serializable; |
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import java.util.Iterator; |
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import javax.swing.tree.TreePath; |
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import org.apache.tapestry.contrib.tree.model.ITreeDataModel; |
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import org.apache.tapestry.contrib.tree.model.ITreeNode; |
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public class SimpleTreeDataModel implements ITreeDataModel, Serializable |
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{ |
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private static final long serialVersionUID = 9215832847660213349L; |
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protected ITreeNode m_objRootNode; |
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public SimpleTreeDataModel(ITreeNode objRootNode) |
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{ |
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super(); |
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m_objRootNode = objRootNode; |
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} |
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public Object getRoot() |
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{ |
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return m_objRootNode; |
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} |
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public int getChildCount(Object objParent) |
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{ |
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ITreeNode objParentNode = (ITreeNode) objParent; |
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return objParentNode.getChildCount(); |
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} |
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public Iterator getChildren(Object objParent) |
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{ |
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ITreeNode objParentNode = (ITreeNode) objParent; |
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return objParentNode.getChildren().iterator(); |
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} |
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public Object getObject(Object objUniqueKey) |
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{ |
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if (objUniqueKey != null) |
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{ |
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TreePath objPath = (TreePath) objUniqueKey; |
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return objPath.getLastPathComponent(); |
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} |
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return null; |
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} |
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public Object getUniqueKey(Object objTarget, Object objParentUniqueKey) |
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{ |
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TreePath objPath = (TreePath) objParentUniqueKey; |
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Object objTargetUID = null; |
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if (objPath != null) |
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{ |
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objTargetUID = objPath.pathByAddingChild(objTarget); |
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} |
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else |
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{ |
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objTargetUID = new TreePath(objTarget); |
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} |
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return objTargetUID; |
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} |
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public boolean isAncestorOf(Object objTargetUniqueKey, |
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Object objParentUniqueKey) |
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{ |
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TreePath objParentPath = (TreePath) objParentUniqueKey; |
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TreePath objTargetPath = (TreePath) objTargetUniqueKey; |
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boolean bResult = objParentPath.isDescendant(objTargetPath); |
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return bResult; |
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} |
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public Object getParentUniqueKey(Object objChildUniqueKey) |
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{ |
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TreePath objChildPath = (TreePath) objChildUniqueKey; |
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TreePath objParentPath = objChildPath.getParentPath(); |
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if (objParentPath == null) return null; |
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return objParentPath.getLastPathComponent(); |
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} |
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} |