package examples.patterns;/* * @(#)MessagePanel.java *  * 03L7246 (c) Copyright IBM Corp. 1996, 1998 *  * The program is provided "as is" without any warranty express or * implied, including the warranty of non-infringement and the implied * warranties of merchantibility and fitness for a particular purpose. * IBM will not be liable for any damages suffered by you as a result * of using the Program. In no event will IBM be liable for any * special, indirect or consequential damages or lost profits even if * IBM has been advised of the possibility of their occurrence. IBM * will not be liable for any third party claims against you. */import java.awt.GridBagLayout;import java.awt.GridBagConstraints;import java.awt.Insets;import java.awt.Rectangle;import java.awt.Component;import java.awt.Graphics;import java.awt.Panel;import java.awt.Label;/** * The <tt>MessagePanel</tt> class is a common and generic dialog to display * the messages *  * @version     1.00    96/07/03 * @author      M.Oshima */public class MessagePanel extends Panel {	private GridBagConstraints cns = new GridBagConstraints();	private GridBagLayout grid = new GridBagLayout();	private boolean raised;	private int alignment;	/**	 * Line separator constants	 */	static final public String lineSeparator = "\n";	static final public char lineSeparatorChar = lineSeparator.charAt(0);	/*	 * Constructs a message panel with the message.	 * @param message	 * @param alignment	 * @param raised	 */	public MessagePanel(String message, int alignment, boolean raised) {		this.alignment = alignment;		this.raised = raised;		setMessage(message);	}	/*	 * Constructs a MessagePanel with the message and boolean which	 * specifies the shape of the frame.	 * @param message	 * @param raised	 */	public MessagePanel(String message, boolean raised) {		this(message, Label.LEFT, raised);	}	public void paint(Graphics g) {		super.paint(g);		g.setColor(getBackground());		g.fillRect(0, 0, getSize().width, getSize().height);		g.draw3DRect(1, 1, getSize().width - 2, getSize().height - 2, raised);	}	/**	 * Sets aligment	 * 	 * @param alignemtn	 */	public void setAlignment(int alignment) {		int t = getComponentCount();		this.alignment = alignment;		for (int i = 0; i < t; i++) {			Component c = getComponent(i);			if (c instanceof Label) {				((Label)c).setAlignment(alignment);			} 		} 	}	/**	 * Sets message string to be shown.	 * 	 * @param message the message	 */	public void setMessage(String message) {		removeAll();		String messages[] = split(message);		cns.gridwidth = GridBagConstraints.REMAINDER;		cns.fill = GridBagConstraints.BOTH;		cns.weightx = 1.0;		cns.weighty = 1.0;		cns.insets = new Insets(3, 3, 3, 3);		setLayout(grid);		for (int i = 0; i < messages.length; i++) {			Label l = new Label(messages[i], alignment);			grid.setConstraints(l, cns);			add(l);		} 	}	private String[] split(String str) {		String msg[] = new String[50];		int pos, i, size = lineSeparator.length();		for (i = 0; (pos = str.indexOf(lineSeparator)) >= 0 && i < 49; i++) {			msg[i] = str.substring(0, pos);			str = str.substring(pos + size);		} 		msg[i++] = str;		String ret[] = new String[i];		System.arraycopy(msg, 0, ret, 0, i);		return ret;	}}