help.java

生物物种进化历程的演示

/**
 * Created on 18-Jun-2003
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package TreeJuxtaposer;
import java.awt.BorderLayout ;
import javax.swing.*;
import java.io.*;
import java.awt.event.*;

//import javax.swing.JFrame;
/**
 * @author jslack
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class Help {

	static public JFrame contentFrame;
	static public JFrame aboutFrame;
    String filename = "README"; ;
	private String credits="" ;

Help()
{
}
	
	final protected static BufferedReader getResourceAsReader( String resource )
	{
		InputStream is=Help.class.getResourceAsStream(resource) ;
    
		BufferedReader reader=new BufferedReader(new InputStreamReader(is)) ;
		return reader ;
	}
/** Load a resource and return its contents as a string
 * 	@return		resource contents on success; null on failure
 * 	@param		string name of resource 
 */

	protected String getReadme()
	{
//		InputStream is = Help.Class.getResourceAsStream(filename);
		BufferedReader br = getResourceAsReader(filename);
		
		try {
			String temp ="";
			StringBuffer buf = new StringBuffer();
//			Reader rd = new FileReader(filename);
//			InputStreamReader isd = new InputStreamReader(is);

			while((temp = br.readLine())!= null)
             buf.append(temp + "\n");
             return buf.toString();
		}
		catch(Exception e){
			System.out.println("Error: " + e.toString());
			return "";
		}
	
	}

	public void showContentFrame()
	{
		contentFrame=new JFrame() ;
		contentFrame.show() ;
	}

	public void showAboutFrame()
	{
		aboutFrame=new JFrame() ;
		javax.swing.text.DefaultStyledDocument doc=new javax.swing.text.DefaultStyledDocument() ;
       
		credits=getReadme() ;
		try {
			doc.insertString(0,credits,null) ;
		} catch( javax.swing.text.BadLocationException ble ) {
		}
        JTextPane jed = new JTextPane();
		jed.setDocument(doc) ;
		jed.setEditable(false) ;
        JScrollPane scroller = new JScrollPane(jed);
		scroller.setMinimumSize(new java.awt.Dimension(450,300)) ;
		scroller.setPreferredSize(new java.awt.Dimension(450,650)) ;
		aboutFrame.getContentPane().add(BorderLayout.CENTER, scroller) ;
        JButton ok=new JButton("Ok");
		ok.addActionListener(new ActionListener()
				{ public void actionPerformed(ActionEvent e)
					{  aboutFrame.dispose(); }});
		aboutFrame.getContentPane().add(BorderLayout.SOUTH, ok) ;
		aboutFrame.pack() ;
		aboutFrame.setLocation(570,30);
		aboutFrame.show() ;
	}
	
}