taskeditdialog.java

一个用于安排项目时间表的Java程序

/*
 *  $Id: TaskEditDialog.java,v 1.1.1.1 2001/03/20 22:17:41 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.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionListener;
import java.util.Enumeration;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;

public class TaskEditDialog extends JDialog implements ActionListener
{

    Task t;
    TaskList tasks;
    JTextField name, length, completion;
    JList list;

    final static String OK_BUTTON = "ok";

    TaskEditDialog(JFrame owner, TaskList tasks, int index)
    {
	super(owner, Resource.get("editTaskDialogTitle"), true);
	t = (Task) tasks.elementAt(index);
	
	this.tasks = tasks;

	Vector showedList = new Vector(tasks);
	showedList.removeElementAt(index);
	list = new JList(showedList);
	list.setPrototypeCellValue("ABCDEFGHIJKLMNOPQRST");
	list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

	for (Enumeration e = ((Task) tasks.elementAt(index)).getDependencies().elements(); e.hasMoreElements(); ) {
	    int i = tasks.indexOf(e.nextElement());
	    list.addSelectionInterval(i,i);
	}

        Component contents = createComponents();
        getContentPane().add(contents, BorderLayout.CENTER);
	
	pack();
	setVisible(true);
    }

    void buildConstraints(GridBagConstraints gbc, int gx, int gy, int gw, int gh, int wx, int wy)
    {
	gbc.gridx = gx;
	gbc.gridy = gy;
	gbc.gridwidth = gw;
	gbc.gridheight = gh;
	gbc.weightx = wx;
	gbc.weighty = wy;
    }

    Component createComponents()
    {
	GridBagLayout gridbag = new GridBagLayout();
	GridBagConstraints constraints = new GridBagConstraints();
	JPanel panel = new JPanel(gridbag);

	// Labels
	buildConstraints(constraints, 0, 0, 1, 1, 10, 40);
	constraints.fill = GridBagConstraints.NONE;
	constraints.anchor = GridBagConstraints.EAST;
	JLabel label1 = new JLabel(" "+Resource.get("task")+": ");
	gridbag.setConstraints(label1, constraints);
	panel.add(label1);

	buildConstraints(constraints, 0, 1, 1, 1, 10, 40);
	constraints.fill = GridBagConstraints.NONE;
	constraints.anchor = GridBagConstraints.EAST;
	JLabel label2 = new JLabel(" "+Resource.get("duration")+": ");
	gridbag.setConstraints(label2, constraints);
	panel.add(label2);

	buildConstraints(constraints, 0, 2, 1, 1, 10, 40);
	constraints.fill = GridBagConstraints.NONE;
	constraints.anchor = GridBagConstraints.NORTHEAST;
	JLabel label3 = new JLabel(" "+Resource.get("finished")+" %: ");
	gridbag.setConstraints(label3, constraints);
	panel.add(label3);

	buildConstraints(constraints, 0, 3, 1, 1, 10, 40);
	constraints.fill = GridBagConstraints.NONE;
	constraints.anchor = GridBagConstraints.NORTHEAST;
	JLabel label4 = new JLabel(" "+Resource.get("predecessors") + ": ");
	gridbag.setConstraints(label4, constraints);
	panel.add(label4);

	// Textfelder
	buildConstraints(constraints, 1, 0, 1, 1, 90, 0);
	constraints.fill = GridBagConstraints.HORIZONTAL;
	name = new JTextField(t.getName());
	gridbag.setConstraints(name, constraints);
	panel.add(name);

	buildConstraints(constraints, 1, 1, 1, 1, 90, 0);
	constraints.fill = GridBagConstraints.HORIZONTAL;
	length = new JTextField(Integer.toString(t.getLength()));
	gridbag.setConstraints(length, constraints);
	panel.add(length);

	buildConstraints(constraints, 1, 2, 1, 1, 90, 0);
	constraints.fill = GridBagConstraints.HORIZONTAL;
	completion = new JTextField(Integer.toString(t.getCompletion()));
	gridbag.setConstraints(completion, constraints);
	panel.add(completion);

	// Listbox
	buildConstraints(constraints, 1, 3, 1, 1, 90, 0);
	constraints.fill = GridBagConstraints.HORIZONTAL;
	JScrollPane listScrollPane = new JScrollPane(list);
	gridbag.setConstraints(listScrollPane, constraints);
	panel.add(listScrollPane);

	// Buttons
	buildConstraints(constraints, 1, 4, 1, 1, 10, 40);
	constraints.fill = GridBagConstraints.NONE;
	constraints.anchor = GridBagConstraints.WEST;
	JButton b = new JButton(Resource.get("okButton"));
	b.setActionCommand(OK_BUTTON);
	b.addActionListener(this);
	gridbag.setConstraints(b, constraints);
	panel.add(b);

	return panel;
    }

    public void actionPerformed(java.awt.event.ActionEvent e)
    {
	if (e.getActionCommand().equals(OK_BUTTON)) {
	    saveValues();
	    hide();
	}
    }

    void saveValues()
    {
	try {
	    t.setLength(Integer.parseInt(length.getText()));
	}
	catch (java.lang.NumberFormatException ex) {
	    t.setLength(0);
	}
	try {
	    t.setCompletion(Integer.parseInt(completion.getText()));
	}
	catch (java.lang.NumberFormatException ex) {
	    t.setCompletion(0);
	}
	t.setName(name.getText());

	int[] indices = list.getSelectedIndices();

	TaskList newDependencies = new TaskList();

	for (int i=0; i < indices.length; i++) {
	    Task element = (Task) tasks.elementAt(indices[i]);
	    if (element.checkRecursion(t)) {
		JOptionPane.showMessageDialog(this, element.getName()+": "+Resource.get("recursionWarning"), Resource.get("warningDialogTitle"), JOptionPane.WARNING_MESSAGE);
	    } else {
		newDependencies.addElement(element);
	    }
	}

	t.setDependencies(newDependencies);
    }
}