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/*
* WindowSizeDialog
*
* Copyright (c) 2001, 2002, 2003 Marco Schmidt.
* All rights reserved.
*/
package net.sourceforge.jiu.gui.awt.dialogs;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.TextComponent;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import net.sourceforge.jiu.apps.Strings;
/**
* A dialog to enter values for the width and height of a window (typically
* for a spatial filter like median or mean.
*
* @author Marco Schmidt
*/
public class WindowSizeDialog extends Dialog implements
ActionListener, KeyListener
{
private Button ok;
private Button cancel;
private TextField width;
private TextField height;
private boolean pressedOk;
/**
* @param owner the Frame this dialog will belong to
*/
public WindowSizeDialog(Frame owner, Strings strings, int titleIndex, int initialWidth, int initialHeight)
{
super(owner, strings.get(titleIndex), true);
pressedOk = false;
Panel panel = new Panel();
panel.setLayout(new GridLayout(0, 2));
panel.add(new Label(strings.get(Strings.ENTER_WINDOW_SIZE)));
panel.add(new Label(""));
panel.add(new Label(strings.get(Strings.WINDOW_WIDTH)));
width = new TextField(Integer.toString(initialWidth));
width.addKeyListener(this);
panel.add(width);
panel.add(new Label(strings.get(Strings.WINDOW_HEIGHT)));
height = new TextField(Integer.toString(initialHeight));
height.addKeyListener(this);
panel.add(height);
add(panel, BorderLayout.CENTER);
ok = new Button(strings.get(Strings.OK));
ok.addActionListener(this);
cancel = new Button(strings.get(Strings.CANCEL));
cancel.addActionListener(this);
panel = new Panel();
panel.add(ok);
panel.add(cancel);
add(panel, BorderLayout.SOUTH);
updateOkButton();
pack();
Dialogs.center(this);
}
/**
* Hides (closes) this dialog if the OK button was source of the action event
* (e.g. if the button was pressed).
*/
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == ok)
{
pressedOk = true;
setVisible(false);
}
else
if (e.getSource() == cancel)
{
setVisible(false);
}
}
public int getHeightValue()
{
return getValue(height);
}
public int getWidthValue()
{
return getValue(width);
}
/**
* Attempts to convert the content of the argument text component
* to an <code>int</code>; if successful, returns that int, otherwise
* -1000 is returned.
* @param textField the text component that is supposed to hold an int value
* @return int representation of the text component's data
*/
private int getValue(TextComponent textField)
{
try
{
return Integer.parseInt(textField.getText());
}
catch (NumberFormatException nfe)
{
return -1000;
}
}
public boolean hasPressedOk()
{
return pressedOk;
}
private void updateOkButton()
{
int w = getWidthValue();
int h = getHeightValue();
ok.setEnabled(w >= 1 && h >= 1 && ((w % 2) == 1) && ((h % 2) == 1));
}
public void keyPressed(KeyEvent e)
{
updateOkButton();
}
public void keyReleased(KeyEvent e)
{
updateOkButton();
}
public void keyTyped(KeyEvent e)
{
updateOkButton();
}
}
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