PageFrame Java code example - Click here to copy ->>>

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A simple extension of the JInternalFrame class that contains a list object. Elements of the list represent HTML pages for a web site.

Code:





 

import java.awt.*;

import java.io.*;

import java.awt.event.*;

import javax.swing.*;



public class PageFrame extends JInternalFrame implements ActionListener {



  SiteManager parent;

  String filename;

  JTextArea ta;



  public PageFrame(String name, SiteManager sm) {

    super("Page: " + name, true, true, true, true);

    parent = sm;

    setBounds(50,50,300,150);



    Container contentPane = getContentPane();



    // Create a text area to display the contents of our file in

    // and stick it in a scrollable pane so we can see everything

    ta = new JTextArea();

    JScrollPane jsp = new JScrollPane(ta);

    contentPane.add(jsp, BorderLayout.CENTER);



    JMenuBar jmb = new JMenuBar();

    JMenu fileMenu = new JMenu("File");

    JMenuItem saveItem = new JMenuItem("Save");

    saveItem.addActionListener(this);

    fileMenu.add(saveItem);

    jmb.add(fileMenu);

    setJMenuBar(jmb);



    filename = name;

    loadContent();

  }



  public void actionPerformed(ActionEvent ae) {

    // Can only be the save menu

    saveContent();

  }



  public void loadContent() {

    try {

      FileReader fr = new FileReader(filename);

      ta.read(fr, null);

      fr.close();

    }

    catch (Exception e) {

      System.err.println("Could not load page: " + filename);

    }

  }



  public void saveContent() {

    try {

      FileWriter fw = new FileWriter(filename);

      ta.write(fw);

      fw.close();

    }

    catch(Exception e) {

      System.err.println("Could not save page: " + filename);

    }

  }



  public void cutText() { ta.cut(); }

  public void copyText() { ta.copy(); }

  public void pasteText() { ta.paste(); }

}