alertdialog.java

来自「This serial client in JAVA allows sendin」· Java 代码 · 共 64 行

// Serial SMS Client for handling SMS communication with a mobile terminal
// (C) 2001 by Stefan Moscibroda


import java.awt.*;
import java.awt.event.*;

/**
A single response modal alert dialog. This class is configurable for message
and title. The width of the dialog will be longer than the longest message
line.  When the OK button is pressed the dialog returns.
*/
public class AlertDialog extends Dialog implements ActionListener {

    /**
    Creates a new <code>AlertDialog</code> with three lines of message and
    a title.

    @param parent Any Frame.
    @param title The title to appear in the border of the dialog.
    @param lineOne The first line of the message in the dialog.
    @param lineTwo The second line of the message in the dialog.
    @param lineThree The third line of the message in the dialog.
    */
    public AlertDialog(Frame parent,
		       String title,
		       String lineOne,
		       String lineTwo,
		       String lineThree) {
	super(parent, title, true);

	Panel labelPanel = new Panel();
	labelPanel.setLayout(new GridLayout(3, 1));
	labelPanel.add(new Label(lineOne, Label.CENTER));
	labelPanel.add(new Label(lineTwo, Label.CENTER));
	labelPanel.add(new Label(lineThree, Label.CENTER));
	add(labelPanel, "Center");

	Panel buttonPanel = new Panel();
	Button okButton = new Button("OK");
	okButton.addActionListener(this);
	buttonPanel.add(okButton);
	add(buttonPanel, "South");

	FontMetrics fm = getFontMetrics(getFont());
	int width = Math.max(fm.stringWidth(lineOne),
		 Math.max(fm.stringWidth(lineTwo), fm.stringWidth(lineThree)));

	setSize(width + 40, 150);
	setLocation(parent.getLocationOnScreen().x + 30,
		    parent.getLocationOnScreen().y + 30);
	setVisible(true);
    }

    /**
    Handles events from the OK button. When OK is pressed the dialog becomes
    invisible, disposes of its self, and retruns.
    */
    public void actionPerformed(ActionEvent e) {
	setVisible(false);
	dispose();
    }
}