tasklistpane.java

一个用于安排项目时间表的Java程序

/*
 *  $Id: TaskListPane.java,v 1.1.1.1 2001/03/20 22:17:42 mastermitch Exp $ 
 *
 *  2001 (C) by Christian Garbs <[e-mail]>
 *
 *  Licensed under GNU GPL (see COPYING for details)
 *
 */

package de.cgarbs.apps.jprojecttimer;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;

/** This pane displays the list of tasks. Tasks may be added, edited or deleted.
 * 
 * @author Christian Garbs <[e-mail]>
 */
public class TaskListPane extends JPanel implements ActionListener
{
    final static String NEW_BUTTON  = "new";
    final static String EDIT_BUTTON = "edit";
    final static String DEL_BUTTON  = "del";

    /**      */
    JTable table;
    /**      */
    TaskList tasks;
    /**      */
    JFrame gui;
    /**      */
    TaskListTableModel model;

    /**      */
    TaskListPane(JFrame gui, Project project)
    {
	super(new BorderLayout());

	this.tasks = project.getTaskList();
	this.gui   = gui;

	JButton add;
	JButton del;
	JButton edit;

	model = new TaskListTableModel(tasks);
	table = new JTable(model);

	table.getColumnModel().getColumn(0).setPreferredWidth(50);
	table.getColumnModel().getColumn(1).setPreferredWidth(250);
	table.getColumnModel().getColumn(2).setPreferredWidth(50);
	table.getColumnModel().getColumn(3).setPreferredWidth(150);
	table.getColumnModel().getColumn(4).setPreferredWidth(35);

	table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

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

	JPanel c = new JPanel();
	
	add = new JButton(Resource.get("newTask"));
	add.setActionCommand(NEW_BUTTON);
	add.addActionListener(this);

	edit = new JButton(Resource.get("editTask"));
	edit.setActionCommand(EDIT_BUTTON);
	edit.addActionListener(this);

	del = new JButton(Resource.get("deleteTask"));
	del.setActionCommand(DEL_BUTTON);
	del.addActionListener(this);

	c.add(add);
	c.add(edit);
	c.add(del);

	add(c, BorderLayout.SOUTH);
    }
    
    /**      */
    public void actionPerformed(ActionEvent e)
    {
	if (e.getActionCommand().equals(NEW_BUTTON)) {

	    int row = tasks.size();

	    TaskList dependencies = new TaskList();
	    if (! tasks.isEmpty()) {
		dependencies.addElement(tasks.lastElement());
	    }
	    Task t = new Task (dependencies);
	    tasks.addElement(t);

	    new TaskEditDialog(gui, tasks, row);

	    model.fireTableRowsInserted(row, row);

	} else if (e.getActionCommand().equals(EDIT_BUTTON)) {

	    int row = table.getSelectedRow();
	    if (row > -1) {
		new TaskEditDialog(gui, tasks, row);
		model.fireTableRowsUpdated(row, row);
	    }

	} else if (e.getActionCommand().equals(DEL_BUTTON)) {

	    int row = table.getSelectedRow();
	    if (row > -1) {

		Task t = (Task) tasks.elementAt(row);

		for (Enumeration enu = tasks.elements(); enu.hasMoreElements(); ) {
		    ((Task) enu.nextElement()).getDependencies().removeElement(t);
		}

		tasks.removeElement(t);
		model.fireTableRowsDeleted(row, row);

	    }

	}
    }

    public void refresh()
    {
	model.fireTableDataChanged();
    }
}