polleditor.java

自己写的轮询提问的小程序 新手刚学 多多指教 合乎哈

/*
Contains PollEditor. This is the GUI for editiong questions.
Copyright (C) 2005-2006  Igor Partola, Michael J. Krikonis, Clark University

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

package PollEditor;

import SharedClasses.*;
import javax.swing.*;
import java.io.*;

public class PollEditor extends javax.swing.JFrame {
    
    public PollEditor() {
        setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
        initComponents();
    }
    
    private void initComponents() {//GEN-BEGIN:initComponents
        QuestionEditor = new SharedClasses.QuestionEditorPanel();
        jMenuBar1 = new javax.swing.JMenuBar();
        FileMenu = new javax.swing.JMenu();
        NewMenuItem = new javax.swing.JMenuItem();
        OpenMenuItem = new javax.swing.JMenuItem();
        SaveMenuItem = new javax.swing.JMenuItem();
        jSeparator1 = new javax.swing.JSeparator();
        ExitMenuItem = new javax.swing.JMenuItem();
        HelpMenu = new javax.swing.JMenu();
        AboutMenuItem = new javax.swing.JMenuItem();

        getContentPane().setLayout(null);

        setTitle("JustPoll Question Editor");
        setResizable(false);
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
                exitForm(evt);
            }
        });

        QuestionEditor.setJPQuestionVector(QuestionVector);
        getContentPane().add(QuestionEditor);
        QuestionEditor.setBounds(10, 10, 400, 410);

        FileMenu.setText("File");
        NewMenuItem.setIcon(new javax.swing.ImageIcon(getClass().getResource("/SharedClasses/graphics/New16.gif")));
        NewMenuItem.setText("New");
        NewMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                NewMenuItemActionPerformed(evt);
            }
        });

        FileMenu.add(NewMenuItem);

        OpenMenuItem.setIcon(new javax.swing.ImageIcon(getClass().getResource("/SharedClasses/graphics/Open16.gif")));
        OpenMenuItem.setText("Open...");
        OpenMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                OpenMenuItemActionPerformed(evt);
            }
        });

        FileMenu.add(OpenMenuItem);

        SaveMenuItem.setIcon(new javax.swing.ImageIcon(getClass().getResource("/SharedClasses/graphics/Save16.gif")));
        SaveMenuItem.setText("Save...");
        SaveMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                SaveMenuItemActionPerformed(evt);
            }
        });

        FileMenu.add(SaveMenuItem);

        FileMenu.add(jSeparator1);

        ExitMenuItem.setText("Exit");
        ExitMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ExitMenuItemActionPerformed(evt);
            }
        });

        FileMenu.add(ExitMenuItem);

        jMenuBar1.add(FileMenu);

        HelpMenu.setText("Help");
        AboutMenuItem.setText("About");
        AboutMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                AboutMenuItemActionPerformed(evt);
            }
        });

        HelpMenu.add(AboutMenuItem);

        jMenuBar1.add(HelpMenu);

        setJMenuBar(jMenuBar1);

        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-430)/2, (screenSize.height-483)/2, 430, 483);
    }//GEN-END:initComponents

    private void AboutMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_AboutMenuItemActionPerformed
        SharedClasses.AboutDialog MyAboutFrame = new SharedClasses.AboutDialog(this, true);
        MyAboutFrame.show(); 
    }//GEN-LAST:event_AboutMenuItemActionPerformed

    private void SaveMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_SaveMenuItemActionPerformed
        String filename;
        JFileChooser fc = new JFileChooser();
        fc.addChoosableFileFilter(new SharedClasses.JPQFileFilter());

        
        // Show open dialog; this method does not return until the dialog is closed
        fc.showSaveDialog(new JFrame());
        File selFile = fc.getSelectedFile();
        if (selFile == null) return;
        
        filename = selFile.getAbsolutePath();
        if (!filename.endsWith(".jpq")) filename = filename + ".jpq";
        
        QuestionVector.saveToFile(filename);
    }//GEN-LAST:event_SaveMenuItemActionPerformed

    private void ExitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_ExitMenuItemActionPerformed
        exitForm(null);
    }//GEN-LAST:event_ExitMenuItemActionPerformed

    private void OpenMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_OpenMenuItemActionPerformed
        JFileChooser fc = new JFileChooser();
        fc.addChoosableFileFilter(new SharedClasses.JPQFileFilter());

        
        // Show open dialog; this method does not return until the dialog is closed
        fc.showOpenDialog(new JFrame());
        File selFile = fc.getSelectedFile();
        if (selFile == null) return;
        
        QuestionVector.loadFromFile(selFile.getAbsolutePath());
    }//GEN-LAST:event_OpenMenuItemActionPerformed

    private void NewMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_NewMenuItemActionPerformed
        QuestionVector.deleteAllQuestions();
    }//GEN-LAST:event_NewMenuItemActionPerformed
    
    private void exitForm(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_exitForm
        int ans = JOptionPane.showConfirmDialog(this, "Save changes?", "Save",
            JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE);
        if (ans == JOptionPane.YES_OPTION) {
            SaveMenuItemActionPerformed(null);
            System.exit(0);
        }
        if (ans == JOptionPane.NO_OPTION) System.exit(0);
        if (ans == JOptionPane.CANCEL_OPTION) return;
    }//GEN-LAST:event_exitForm

    public static void main(String args[]) {
        new PollEditor().show();
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JMenuItem AboutMenuItem;
    private javax.swing.JMenuItem ExitMenuItem;
    private javax.swing.JMenu FileMenu;
    private javax.swing.JMenu HelpMenu;
    private javax.swing.JMenuItem NewMenuItem;
    private javax.swing.JMenuItem OpenMenuItem;
    private SharedClasses.QuestionEditorPanel QuestionEditor;
    private javax.swing.JMenuItem SaveMenuItem;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JSeparator jSeparator1;
    // End of variables declaration//GEN-END:variables

    private JPQuestionVector QuestionVector = new JPQuestionVector();
    
}