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Figure 12-18 illustrates the results of double-clicking on the node for David Miller
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We mentioned earlier that OrgChartPanel can supply an ActionListener with events Whenever a user clicks on a name in the panel, all registered ActionListeners are called with an ActionEvent The action command is the DN of the corresponding directory entry To receive and process this event, the OrgChart application must register itself as an ActionListener with the OrgChartPanel and implement the actionPerformed method of the ActionListener interface:
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public class OrgChart implements ActionListener { public OrgChart( String[] args ) { // Create a panel component with the nodes found OrgChartPanel org = new OrgChartPanel( root ); orgsetSubordinateTextColor( Colorblue ); orgaddActionListener( this );
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FIGURE 12-18 Popping up a PropertyTable from OrgChartTree
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} /** * Handle events from clicking on a user node * * @param e event from a button; the action command * is the DN of the user entry */ public void actionPerformed( ActionEvent e ) { if ( egetSource() instanceof JButton ) { String dn = egetActionCommand(); Systemoutprintln( dn ); // The action command is the DN of an entry to view JTable table = new PropertyTable( _ldc, dn ); Dimension dim = new Dimension( 500, 300 ); new SimpleDialog( dn, table, 20, 20, dim, false )show(); } }
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The TestTree application we presented in 10 can display a directory tree as a JTree, and optionally also as a table that presents a few attributes each of all child entries of the node selected in the tree For our concluding example of LDAP component integration, we will extend TestTree to optionally request a third pane to present all attributes of the entry selected in the child table The third pane will be a PropertyTable In parsing command-line arguments, TestTree will now allow the values 1 through 3 for the number of panes, rather than 1 through 2:
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} else if ( args[i]compareTo("-panes" ) == 0 ) { if ( (i + 1) < argslength ) { nPanes = IntegerparseInt(args[i+1]); invalid = ( (nPanes < 1) || (nPanes > 3) ); i++; }
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If more than one pane is requested, a tree panel and a child table panel are created and inserted into a horizontal splitter pane as before If more than two panes are requested, a PropertyTable object is created as well The horizontal splitter pane and
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the PropertyTable object are added to a vertical splitter pane TestTree creates a listener for selection events in the child table When a row is selected, the DN of the corresponding directory entry is obtained from the child table and the PropertyTable object is asked to refresh itself from the new DN:
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if ( nPanes > 1 ) { // Show both a tree and a table final SimpleTable table = new SimpleTable(); // Hook the table to the tree with an adapter EntryListAdapter lister = new EntryListAdapter( ldc, table ); treeaddDirNodeListener( lister ); // A panel is required to keep the background // the right color JPanel tablePanel = addTableToScrollPanel( table ); JSplitPane splitPane = new JSplitPane(JSplitPaneHORIZONTAL_SPLIT, treeSp, tablePanel); splitPanesetBorder( new EmptyBorder(6, 6, 6, 6) ); if ( nPanes > 2 ) { // Add a property table to show all // properties of a selected table row final PropertyTable ptable = new PropertyTable( ldc, "" ); tablePanel = addTableToScrollPanel( ptable ); // A vertical splitter pane, with the // property table at the bottom JSplitPane triPane = new JSplitPane( JSplitPaneVERTICAL_SPLIT, splitPane, tablePanel); triPanesetBorder( new EmptyBorder(6, 6, 6, 6) ); triPanesetDividerLocation( 200 ); framegetContentPane()add( triPane ); framesetSize( new Dimension( 650, 450 ) ); // Listen for selection changes in the
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// simple table and notify the property // table ListSelectionModel m = tablegetSelectionModel(); maddListSelectionListener( new ListSelectionListener() { public void valueChanged( ListSelectionEvent e) { int index = tablegetSelectedRow(); String dn =(String) tablegetKeyAt( index ); ptablesetDN( dn ); } }); } else { // Two panes framegetContentPane()add( splitPane ); framesetSize( new Dimension( 650, 300 ) ); } } else { // One pane - just show the tree framegetContentPane()add( treeSp ); framesetSize( new Dimension( 200, 300 ) ); }
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You can now request three panes, using the following command:
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