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171 lines (141 loc) · 5.41 KB
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package tableSelection;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
/**
* This frame shows a multiplication table and has menus for setting the row/column/cell selection modes, and for adding
* and removing rows and columns.
*/
class TableSelectionFrame extends JFrame
{
public TableSelectionFrame()
{
setTitle("TableSelectionTest");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
// set up multiplication table
model = new DefaultTableModel(10, 10);
for (int i = 0; i < model.getRowCount(); i++)
for (int j = 0; j < model.getColumnCount(); j++)
model.setValueAt((i + 1) * (j + 1), i, j);
table = new JTable(model);
add(new JScrollPane(table), "Center");
removedColumns = new ArrayList<TableColumn>();
// create menu
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu selectionMenu = new JMenu("Selection");
menuBar.add(selectionMenu);
final JCheckBoxMenuItem rowsItem = new JCheckBoxMenuItem("Rows");
final JCheckBoxMenuItem columnsItem = new JCheckBoxMenuItem("Columns");
final JCheckBoxMenuItem cellsItem = new JCheckBoxMenuItem("Cells");
rowsItem.setSelected(table.getRowSelectionAllowed());
columnsItem.setSelected(table.getColumnSelectionAllowed());
cellsItem.setSelected(table.getCellSelectionEnabled());
rowsItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
table.clearSelection();
table.setRowSelectionAllowed(rowsItem.isSelected());
cellsItem.setSelected(table.getCellSelectionEnabled());
}
});
selectionMenu.add(rowsItem);
columnsItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
table.clearSelection();
table.setColumnSelectionAllowed(columnsItem.isSelected());
cellsItem.setSelected(table.getCellSelectionEnabled());
}
});
selectionMenu.add(columnsItem);
cellsItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
table.clearSelection();
table.setCellSelectionEnabled(cellsItem.isSelected());
rowsItem.setSelected(table.getRowSelectionAllowed());
columnsItem.setSelected(table.getColumnSelectionAllowed());
}
});
selectionMenu.add(cellsItem);
JMenu tableMenu = new JMenu("Edit");
menuBar.add(tableMenu);
JMenuItem hideColumnsItem = new JMenuItem("Hide Columns");
hideColumnsItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
int[] selected = table.getSelectedColumns();
TableColumnModel columnModel = table.getColumnModel();
// remove columns from view, starting at the last
// index so that column numbers aren't affected
for (int i = selected.length - 1; i >= 0; i--)
{
TableColumn column = columnModel.getColumn(selected[i]);
table.removeColumn(column);
// store removed columns for "show columns" command
removedColumns.add(column);
}
}
});
tableMenu.add(hideColumnsItem);
JMenuItem showColumnsItem = new JMenuItem("Show Columns");
showColumnsItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
// restore all removed columns
for (TableColumn tc : removedColumns)
table.addColumn(tc);
removedColumns.clear();
}
});
tableMenu.add(showColumnsItem);
JMenuItem addRowItem = new JMenuItem("Add Row");
addRowItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
// add a new row to the multiplication table in
// the model
Integer[] newCells = new Integer[model.getColumnCount()];
for (int i = 0; i < newCells.length; i++)
newCells[i] = (i + 1) * (model.getRowCount() + 1);
model.addRow(newCells);
}
});
tableMenu.add(addRowItem);
JMenuItem removeRowsItem = new JMenuItem("Remove Rows");
removeRowsItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
int[] selected = table.getSelectedRows();
for (int i = selected.length - 1; i >= 0; i--)
model.removeRow(selected[i]);
}
});
tableMenu.add(removeRowsItem);
JMenuItem clearCellsItem = new JMenuItem("Clear Cells");
clearCellsItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
for (int i = 0; i < table.getRowCount(); i++)
for (int j = 0; j < table.getColumnCount(); j++)
if (table.isCellSelected(i, j)) table.setValueAt(0, i, j);
}
});
tableMenu.add(clearCellsItem);
}
private DefaultTableModel model;
private JTable table;
private ArrayList<TableColumn> removedColumns;
private static final int DEFAULT_WIDTH = 400;
private static final int DEFAULT_HEIGHT = 300;
}