com.darwinsys.swingui.ArrayListTablePanel Maven / Gradle / Ivy

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Ian Darwin's assorted Java stuff, assembled as an API.
There is a newer version: 1.8.0
package com.darwinsys.swingui;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;

/**
 * ArrayListTablePanel - Bean/GUI panel for ArrayListTableModel.
 * 
 * Subclass should call getTable() and set any
 * desired Renderers or Editors.
 * 

 * The class of things in the list must have a public, no-argument constructor.
 *
 * 
TODO list:
 * 

 * Find a way to obviate passing Class when we have <T>
 * 
Debug MoveUp/MoveDown!
 * 
add constructor options for Add, Remove, MoveUp/MoveDown buttons
 * 
 *
 * @author	Ian Darwin, http://www.darwinsys.com/
 */
public class ArrayListTablePanel extends JPanel {

	private static final long serialVersionUID = 3688786964249719347L;
	/** The list of objects we are viewing */
	protected List list;
	/** The kind of thing that is in the list. */
	protected Class objectClass;
	/** The JTable's data (model) */
	protected ArrayListTableModel model;
	/** The JTable itself */
	protected JTable table;

	/** 
	 * Construct new ArrayListTablePanel
	 * @param objClass The type
	 * @param al The list
	 * @param lm The model
	 */
	@SuppressWarnings("unchecked")
	public ArrayListTablePanel(Class objClass,
		List al, ArrayListTableModel lm) {

		objectClass = objClass;
		list = al;
		model = lm;
		table = new JTable(model);

		setLayout(new BorderLayout());

		add(new JScrollPane(table), BorderLayout.CENTER);

		JPanel botPanel = new JPanel();
		JButton jb;
		botPanel.add(jb = new JButton("Add"));
		jb.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent evt) {
				int i = table.getSelectedRow();
				if (i<0) i = list.size();
				T newObj = null;
				try {
					newObj = (T) objectClass.newInstance();
				} catch (Exception ex) {
					JOptionPane.showMessageDialog(null,
						"Object creation FAILED\n " + ex, "Error",
						JOptionPane.ERROR_MESSAGE);
					return;
				}
				list.add(i, newObj);
				table.tableChanged(new 
					TableModelEvent(model, i, i, 
					TableModelEvent.ALL_COLUMNS, TableModelEvent.INSERT));
			}
		});

		botPanel.add(jb = new JButton("Move Up"));
		jb.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent evt) {
				int i = table.getSelectedRow();
				if (i == -1 || i == 0)
					return;
				T obj = list.get(i);
				list.remove(i);
				list.add(i-1, obj);
				table.tableChanged(new 
					TableModelEvent(model, i-1, i-1, 
					TableModelEvent.ALL_COLUMNS, TableModelEvent.INSERT));
				model.invalidateCache();
			}
		});

		botPanel.add(jb = new JButton("Move Down"));
		jb.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent evt) {
				int i = table.getSelectedRow();
				if (i == -1 || i == list.size()-1)
					return;
				T obj = list.get(i);
				list.remove(i);
				list.add(i+1, obj);
				table.tableChanged(new 
					TableModelEvent(model, i, i, 
					TableModelEvent.ALL_COLUMNS, TableModelEvent.INSERT));
				// table.setSelectedRowInterval(i+1, i+1);
				model.invalidateCache();
			}
		});

		botPanel.add(jb = new JButton("Remove"));
		jb.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent evt) {
				int i = table.getSelectedRow();
				if (i<0)
					return;	// nothing selected
				list.remove(i);
				table.tableChanged(new 
					TableModelEvent(model, i, i, 
					TableModelEvent.ALL_COLUMNS, TableModelEvent.DELETE));
				model.invalidateCache();
			}
		});

		add(botPanel, BorderLayout.SOUTH);
	}

	/** @return a reference to the JTable. */
	public JTable getTable() {
		return table;
	}
}