TreeTable
Aus Byte-Welt Wiki
Version vom 22. Februar 2009, 14:26 Uhr von AndreUhres (Diskussion | Beiträge)
Hier ist eine einfache Implementation einer TreeTable (gem. Alexandru Toth), die ein gemeinsames Model für JTree und JTable benutzt. Es ist dann kein Problem mehr, dynamisch neue Zeilen hinzuzufügen:
<code=java>package treetable;
import java.awt.Color; import javax.swing.*; import javax.swing.table.*;
/** JTable that has different renderers depending on the classes in TreeModel */ public class Table extends JTable {
void registerRenderers() {
setDefaultRenderer(Color.class, new TableColorRenderer(Color.WHITE));
}
public Table() {
super();
registerRenderers(); }
public Table(TableModel dm) {
super(dm);
registerRenderers(); }
public Table(TableModel dm, TableColumnModel cm) {
super(dm, cm);
registerRenderers(); }
@Override
public TableCellRenderer getCellRenderer(int row, int column) {
Object value = getModel().getValueAt(row, column);
/** enable to have custom renderers depending on class of cell */
TableCellRenderer tcr = getDefaultRenderer(value.getClass());
return tcr; }
}</code=java>
<code=java>package treetable;
import javax.swing.*; import javax.swing.event.*; import javax.swing.tree.*; import javax.swing.table.*; import java.util.Vector;
public class TableAdapter extends AbstractTableModel {
private JTree tree; private JTable table; private int[] sel_rows; private ListSelectionListener selectionListener;
public TableAdapter(JTree t) {
tree = t;
tree.addTreeExpansionListener(new TreeExpansionListener() {
public void treeExpanded(TreeExpansionEvent event) {
fireTableDataChanged();
select();
}
public void treeCollapsed(TreeExpansionEvent event) {
fireTableDataChanged();
select();
}
});
}
public void addTable(JTable t) {
table = t;
tree.addTreeSelectionListener(new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent e) {
sel_rows = tree.getSelectionRows();
select();
}
});
selectionListener = new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
int row = table.getSelectedRow();
tree.setSelectionRow(row);
}
};
table.getSelectionModel().addListSelectionListener(selectionListener);
}
private void select() {
if (sel_rows != null) {
table.getSelectionModel().setSelectionInterval(sel_rows[0], sel_rows[0]);
}
}
//assumes all nodes have same number of items as root node
public int getColumnCount() {
DefaultMutableTreeNode root = (DefaultMutableTreeNode) tree.getModel().getRoot();
TableNode n = (TableNode) root.getUserObject();
return n.getDataRow().size();
}
public int getRowCount() {
return tree.getRowCount();
}
@Override
public String getColumnName(int col) {
return new String("col" + col);
}
public Object getValueAt(int row, int col) {
TreePath tPath = tree.getPathForRow(row);
Object[] oPath = tPath.getPath();
int len = oPath.length;
DefaultMutableTreeNode node = (DefaultMutableTreeNode) oPath[len - 1];
TableNode treeNode = (TableNode) node.getUserObject();
Vector dataRow = treeNode.getDataRow();
return dataRow.elementAt(col); }
@Override
public void setValueAt(Object value, int row, int col) {
TreePath tPath = tree.getPathForRow(row);
Object[] oPath = tPath.getPath();
int len = oPath.length;
DefaultMutableTreeNode node = (DefaultMutableTreeNode) oPath[len - 1];
TableNode treeNode = (TableNode) node.getUserObject();
Vector dataRow = treeNode.getDataRow();
dataRow.setElementAt(value, col);
}
@Override
public Class getColumnClass(int c) {
DefaultMutableTreeNode root = (DefaultMutableTreeNode) tree.getModel().getRoot();
TableNode n = (TableNode) root.getUserObject();
return n.getDataRow().elementAt(c).getClass();
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
return true;
}
}</code=java>
<code=java>package treetable;
import java.awt.*; import javax.swing.*; import javax.swing.table.*; import javax.swing.border.*;
public class TableColorRenderer extends JLabel implements TableCellRenderer {
Border unselectedBorder = null; Border selectedBorder = null; boolean isBordered = true;
public TableColorRenderer(Color color) {
super();
setOpaque(true);
setBackground(color);
}
public Component getTableCellRendererComponent(
JTable table, Object value,
boolean isSelected, boolean hasFocus,
int row, int column) {
if (isSelected) {
if (selectedBorder == null) {
selectedBorder = BorderFactory.createMatteBorder(2, 5, 2, 5,
table.getSelectionBackground());
}
setBorder(selectedBorder);
} else {
if (unselectedBorder == null) {
unselectedBorder = BorderFactory.createMatteBorder(2, 5, 2, 5,
table.getBackground());
}
setBorder(unselectedBorder);
}
if (value.getClass() == Color.class) {
setBackground((Color) value);
} else {
setBackground(Color.WHITE);
}
return this;
}
}</code=java>
<code=java>package treetable;
import java.util.*;
public class TableNode {
private String label; private Vector dataRow;
public TableNode(String s, Object x, Object y) {
label = s;
dataRow = new Vector();
dataRow.add(x);
dataRow.add(y);
}
@Override
public String toString() {
return label;
}
public Vector getDataRow() {
return dataRow;
}
}</code=java>
<code=java>package treetable;
import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import javax.swing.tree.*; import javax.swing.table.*;
public class TreeTable extends JFrame {
private JTableHeader tableHeader; private JTree tree; private TableAdapter adapter; private Table table; private JButton btAdd; private DefaultMutableTreeNode root; private JSplitPane splitPane; private Color selectionColor; private Rectangle selectedRowBounds; private boolean expand;//allows the MouseListener to detect "handles" action (->no row selection)
public TreeTable() {
super("Tree Table Demo");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
tree = new JTree(createTree()) {
//Override paintComponent of JTree:
@Override
public void paintComponent(final Graphics g) {
if (selectedRowBounds != null) {
setOpaque(false);
//Set selection Color:
g.setColor(selectionColor);
//Draw selection rectangle using the width of JTree:
g.fillRect(0, (int) selectedRowBounds.getY(), getWidth(), (int) selectedRowBounds.getHeight());
} else {
setOpaque(false);
}
super.paintComponent(g);
}
};
adapter = new TableAdapter(tree);
table = new Table(adapter);
table.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
//connect Selection listeners
adapter.addTable(table);
//same height !!
table.setRowHeight(18);
tree.setRowHeight(table.getRowHeight());
customizeTree();
//
splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, tree, table);
splitPane.setDividerLocation(150);
splitPane.setBackground(Color.WHITE);
JScrollPane scrollPane = new JScrollPane(splitPane);
getContentPane().add(scrollPane, BorderLayout.CENTER);
JPanel header = new JPanel(null);
tableHeader = table.getTableHeader();
header.add(tableHeader);
header.setPreferredSize(new Dimension(0, 16));
getContentPane().add(header, BorderLayout.NORTH);
setSize(400, 300);
setLocationRelativeTo(null);
table.addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
Point loc = table.getLocationOnScreen();
tableHeader.setBounds(new Rectangle(loc.x - getLocation().x - 3, 0, 3000, 18));
}
});
btAdd = new JButton();
add(btAdd, BorderLayout.SOUTH);
btAdd.setAction(new AbstractAction("Add") {
public void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode n = new DefaultMutableTreeNode(new TableNode("NEW", new Integer(5), Color.GREEN));
DefaultMutableTreeNode parent = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
if (parent != null) {
parent.add(n);
((DefaultTreeModel) tree.getModel()).nodeStructureChanged(parent);
table.repaint();
validate();
}
}
});
}
private DefaultMutableTreeNode createTree() {
// create root node and add more nodes
root = new DefaultMutableTreeNode(new TableNode("World", new Integer(10), Color.YELLOW));
DefaultMutableTreeNode n = new DefaultMutableTreeNode(new TableNode("Europe", new Integer(5), Color.GREEN));
root.add(n);
DefaultMutableTreeNode n1 = new DefaultMutableTreeNode(new TableNode("Finland", new Integer(1), Color.ORANGE));
n.add(n1);
n1 = new DefaultMutableTreeNode(new TableNode("Romania", new Integer(1), Color.RED));
n.add(n1);
n1 = new DefaultMutableTreeNode(new TableNode("Germany", new Integer(3), Color.BLUE));
n.add(n1);
n = new DefaultMutableTreeNode(new TableNode("America", new Integer(4), Color.WHITE));
root.add(n);
n = new DefaultMutableTreeNode(new TableNode("Asia", new Integer(1), Color.MAGENTA));
root.add(n);
return root; }
private void customizeTree() {
tree.setFocusable(false);
selectionColor = table.getSelectionBackground();
tree.putClientProperty("JTree.lineStyle", "Horizontal");
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
tree.setOpaque(false);
//Adapt the default selection colors:
DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();
renderer.setBorderSelectionColor(Color.WHITE);
renderer.setBackgroundSelectionColor(new Color(0, 0, 0, 0));
//Add the TreeSelectionListener:
TreeSelectionModel selectionModel = tree.getSelectionModel();
selectionModel.addTreeSelectionListener(new TreeSelectionListener() {
public void valueChanged(final TreeSelectionEvent e) {
paintSelectionRect();
}
});
//Add the TreeExpansionListener:
tree.addTreeExpansionListener(new TreeExpansionListener() {
public void treeCollapsed(final TreeExpansionEvent event) {
paintSelectionRect();
expand = true;
}
public void treeExpanded(final TreeExpansionEvent event) {
paintSelectionRect();
expand = true;
}
});
//Add MouseListener if you want to listen to whole line width:
tree.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(final MouseEvent e) {
if (!expand) {
int row = tree.getClosestRowForLocation(e.getX(), e.getY());
if (e.getClickCount() == 2) {
if (tree.isCollapsed(row)) {
tree.expandRow(row);
} else {
tree.collapseRow(row);
}
} else {
tree.setSelectionRow(row);
}
}
expand = false;
}
});
} //This method is called in valueChanged, treeCollapsed and treeExpanded //to paint the selection rectangle:
private void paintSelectionRect() {
//Get selected row bounds:
int[] rows = tree.getSelectionRows();
if (rows == null) {
selectedRowBounds = null;
return;
}
selectedRowBounds = tree.getRowBounds(rows[0]);
//Repaint the JTree:
tree.repaint();
}
public static void main(final String[] args) {
Runnable gui = new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
ex.printStackTrace();
}
new TreeTable().setVisible(true);
}
};
//GUI must start on EventDispatchThread:
SwingUtilities.invokeLater(gui);
}
}</code=java>
