plus/minus sign in a jtree

[seema chhetri]

Hello ,

this is a jtree n i want a plus /minus sign in the jtree without GUI. i want this sign using like public boolean isLeaf(Object node) .please tell me if there is any solution

   
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.Iterator;

import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.plaf.metal.MetalIconFactory;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;


public class OdiSAPERPMetadataBrowser {
	
	// The initial width and height of the frame
	private static int sWIDTH = 700;
	private static int sHEIGHT = 630;

	public DefaultMutableTreeNode jTreeRootNode, jTreeSelectedNode; //rootNode & selected node
	

private JPanel jPanelTree = new JPanel();

	private static final int BORDER = 12;  // Window border in pixels.
	private Hashtable mModuleName = null; //Hashtable of Module Name & Description
	private ArrayList mAppCompList = null; //List of Application Component & Tables

	//mSelectedTables - map of keys as selected tables name & values as their list of fields name
	private Hashtable mSelectedTables = new Hashtable();
	
	private String moduleKey = null;
	private String moduleDesc = null;

	public boolean isTableNodeSelected = false;
	public ArrayList mDeleselectedNodeList = new ArrayList();
	
	public JFrame frame = null;	
	private JTree tree =null;
	private String ivTable = null;
	private String ivDesc = null;
	private String ivPackg = null;
	private String ivAPComp = null;
	
	/**
	 * Default Constructor
	 * Comments
	 */ 
	 {
	public OdiSAPERPMetadataBrowser() { ////For eclipse version
				
		frame = new JFrame();
		frame.setTitle("SAP Metadata Browser");
		
		
		createTreePanel(); //Prepare tree panel
		
		Toolkit tk = Toolkit.getDefaultToolkit();
	    Dimension screenSize = tk.getScreenSize();
	    int screenHeight = screenSize.height;
	    int screenWidth = screenSize.width;
	    frame.setSize(sWIDTH, sHEIGHT);
	    frame.setLocation(screenWidth / 4, screenHeight / 13);
	    frame.setVisible(true);
	//		}////End of Default Constructor
	

	
	
	public Hashtable getALLSAPModules() {
					Hashtable sapModList = new Hashtable();
			sapModList.put("CA", "Cross-Application Components");
			sapModList.put("AC", "Accounting - General");
			sapModList.put("FI", "Financial Accounting");
			sapModList.put("TR", "Treasury");
			sapModList.put("CO", "Controlling");
			sapModList.put("IM", "Investment Management");
			sapModList.put("EC", "Enterprise Controlling");
			sapModList.put("RE", "Real Estate Management");
			sapModList.put("LO", "Logistics - General");
			sapModList.put("SD", "Sales and Distribution");
			sapModList.put("MM", "Materials Management");
			sapModList.put("LE", "Logistics Execution");
			sapModList.put("QM", "Quality Management");
			sapModList.put("PM", "Plant Maintenance");
			sapModList.put("CS", "Customer Service");
			sapModList.put("PP", "Production Planning and Control");
			sapModList.put("PS", "Project System");
			sapModList.put("EHS", "Environment, Health and Safety");
			sapModList.put("PA", "Personnel Management");
			sapModList.put("PT", "Personnel Time Management");
			sapModList.put("PY", "Payroll");
			sapModList.put("PE", "Training and Event Management");
			sapModList.put("BC", "Basis Components");
			sapModList.put("SV", "Service");
			
			
			
			return sapModList;
			
		}//End of getALLSAPModules method
	
	/**
	 * This method is responsible to create tree node of fetched table metadata from SAP System **
	 * @param 
	 * @return void
	 */
	private void createTreePanel() {
		
		// Root node and main modules
		
		jTreeRootNode = new DefaultMutableTreeNode("SAP Metadata");
		mModuleName = getALLSAPModules(); //getting SAP main module
		//enumerate all the contents of the hashtable
		Enumeration keys = mModuleName.keys();

		while ( keys.hasMoreElements()) {
			moduleKey = (String)keys.nextElement();
			moduleDesc = (String)mModuleName.get( moduleKey );
			DefaultMutableTreeNode moduleNode = new DefaultMutableTreeNode(moduleKey + ",       " + moduleDesc);
			jTreeRootNode.add(moduleNode); //Adding main module into tree
		} // end while
		tree = new JTree(jTreeRootNode); //making tree
		tree.putClientProperty("JTree.lineStyle", "Angled");
		
		// Setting folder icon for empty node
		Icon leafIcon = MetalIconFactory.getTreeLeafIcon();
        Icon openIcon = MetalIconFactory.getTreeFolderIcon();
           
        DefaultTreeCellRenderer dtcr = new DefaultTreeCellRenderer();
        dtcr.setLeafIcon(openIcon);
        dtcr.setOpenIcon(openIcon);
        tree.setCellRenderer(dtcr);
        // end of setting folder icon
        
		
		//Add mouse listener to add sub nodes (App. component, tables & fields) in the tree on double click
		
		
		//Add tree structure into the scrollpane & after that in the container
		JScrollPane srollpane = new JScrollPane(tree);
		jPanelTree.setLayout(new BoxLayout(jPanelTree, BoxLayout.LINE_AXIS));
		jPanelTree.add(srollpane);
        jPanelTree.setBorder(BorderFactory.createTitledBorder(""));
        frame.getContentPane().add(jPanelTree, BorderLayout.CENTER); //Adding tree in the center
	//	sapLogger.log(sapLogger.INFO, "-------- OdiSAPERPMetadataBrowser  || createTreePanel() ------------");
        
         
	}//End of createTreePanel() method
	
	/**
	 * This method is use to add bottom panel and handle the button listener to cancel or reverse metadata
	 *   
	*/



	
	

	/** static void main() method */
	public static void main(String args[]) {

		OdiSAPERPMetadataBrowser frame = new OdiSAPERPMetadataBrowser();

	} //End of static void main() method
	}


	
	   

thanks