mainframe.java

抽奖系统。营销活动现场

  void menuExport_actionPerformed(ActionEvent e) {
    if (exportData()){
      JOptionPane.showMessageDialog(this,"Data exported OK!");
    };
  }

  /**
   * 显示抽奖窗口
   */
  void  drawLots(){
    if  (AppState.luckyUserList.size()>0){
      int result = JOptionPane.showConfirmDialog(
                    this,
                    "Are you clear all lucky user information?",
                    "Waring",
                    JOptionPane.OK_CANCEL_OPTION
                    );
      if (result != JOptionPane.OK_OPTION) return;
      AppState.luckyUserList.removeAllElements();
      this.resetLuckyUserTable();
    }
    DrawLots lots = new DrawLots(AppState.userList.size(),AppState.roundCount);
    if (lots.isUserNumberEnough() == false) {
      JOptionPane.showMessageDialog(this,"lottery number is larger than user number");
      return;
    }
    LotteryWindow win = new LotteryWindow(lots);
    win.show();
    //?? how blocking here,waiting the window return result ?
  }

  /**
   * 用后台数据刷新表格
   */
  void resetUserTable(){
    userTableModel=new UserTableModel();
    userTableModel.setModelData(AppState.userList,UserInfo.getUserTableHeadArray());
    userTable.setModel(userTableModel);
  }

  /**
   * 用后台数据刷新表格
   */
  void resetLuckyUserTable(){
    luckyUserTableModel=new UserTableModel();
    luckyUserTableModel.setModelData(AppState.luckyUserList,LuckyUserInfo.luckyUserTableHeadArray);
    luckyUserTable.setModel(luckyUserTableModel);
  }


  /**
   * 退出的确认对话框
   */
  void doExiting() throws Exception{
    int result = JOptionPane.showConfirmDialog(this,
        "Are you want to save data ?",
        "Warning",JOptionPane.YES_NO_CANCEL_OPTION);
    if (result == JOptionPane.CANCEL_OPTION){
      return;
    }
    if (result==JOptionPane.YES_OPTION){
      if (saveFile()==false) {
        return;
      }
    }
    AppState.saveConfig();
    System.exit(0);

  }

  /**
   * 显示添加/编辑记录
   */
  public void showUserDlg(Frame frame,String title,boolean modal,UserInfo info, boolean isNew, int recordIndex){
    UserDialog dlg;
    if (isNew==true){
      dlg = new UserDialog(frame,title,modal,info,isNew);
    }else{
      dlg= new UserDialog(frame, title,modal,info,recordIndex);
    }
    Dimension dlgSize = dlg.getPreferredSize();
    Dimension frmSize = getSize();
    Point loc = getLocation();
    dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
    dlg.setModal(true);
    dlg.show();

  }

  /**
   * 打开数据文件
   */
  void openFile(){
    // show the filechooser
    int result = fc.showOpenDialog(this);
    if(result != JFileChooser.APPROVE_OPTION) {
      return;
    }
    String fileName = fc.getSelectedFile().getPath();
    if (FileUtility.exist(fileName)==false){
      JOptionPane.showMessageDialog(this,"File is not exsit !");
      return;
    }
    if (FileUtility.isFileValid(fileName)==false){
      JOptionPane.showMessageDialog(this,"Selected file is not a valid file!");
      return;
    }

    // here use the new
    try {
      AppState.loadData(fileName);
      resetUserTable();
      resetLuckyUserTable();
      AppState.dataFileName= fileName;
      userTable.invalidate();
      userTable.repaint();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  /**
   * 编辑当前记录
   */
  public void editCurrentRecord(){
    if (tabbedPane.getSelectedIndex()!=0) return;
    if (userTable.getRowCount()==0) return;
    int selectedRow=userTable.getSelectedRow();
    userTable.clearSelection() ;
    //user must select one row to edit
    if (selectedRow < 0 ) {
      JOptionPane.showMessageDialog(this,"No record selected");
      return;
    }
    UserInfo info = (UserInfo)AppState.userList.elementAt(selectedRow);
    showUserDlg(this,"Edit a User",true,info,false,selectedRow);
  }

  /**
   * 删除当前记录
   */
  void deleteCurrentRecord(){
    if (tabbedPane.getSelectedIndex()!=0) return;
    if (userTable.getRowCount()==0) return;
    int selectedRow=userTable.getSelectedRow();
    userTable.clearSelection() ;
    //user must select one row to edit
    if (selectedRow < 0 ) {
      JOptionPane.showMessageDialog(this,"No record selected");
      return;
    }
    int result = JOptionPane.showConfirmDialog(this,
        "Are you sure to erase current record ?",
        "Warning",JOptionPane.OK_CANCEL_OPTION);
    if (result==JOptionPane.OK_OPTION){
      AppState.removeUser(selectedRow);
      userTable.invalidate();
      userTable.repaint();
    }
  }

  /**
   * 显示"关于"对话框
   */
  void showAboutDialog(){
    MainFrame_AboutBox dlg = new MainFrame_AboutBox(this);
    Dimension dlgSize = dlg.getPreferredSize();
    Dimension frmSize = getSize();
    Point loc = getLocation();
    dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
    dlg.setModal(true);
    dlg.show();
  }

  /**
   * 清空当前的数据状态
   */
  void newFile(){
    if (AppState.userList.size()!=0){
      int result = JOptionPane.showConfirmDialog(this,
          "Are you sure clear all data ?",
          "Warning",JOptionPane.OK_CANCEL_OPTION);
      if (result==JOptionPane.OK_OPTION){
        AppState.resetAllState();
        resetUserTable();
        resetLuckyUserTable();
      }
    }
  }

  /**
   * 保存文件
   */
  public boolean saveFile(){
    return saveFile(false);
  }

  /**
   * 保存文件
   */
  public boolean saveFile(boolean isSaveAs){
    String fileName;
    if (AppState.dataFileName==null
        ||AppState.dataFileName.equals("")
        ||isSaveAs){
      JFileChooser fc = new JFileChooser();
      // show the filechooser
      int result = fc.showOpenDialog(this);

      if(result != JFileChooser.APPROVE_OPTION) {
        return false;
      }
      fileName = fc.getSelectedFile().getPath();
      if (FileUtility.exist(fileName)==true){
        int r = JOptionPane.showConfirmDialog(
                  this,
                  "File already exsited, overwrite it ?",
                  "Warning",
                  JOptionPane.OK_CANCEL_OPTION
                  );
        if (r != JOptionPane.OK_OPTION){
          return false;
        }
      }
    }else{
      fileName = AppState.dataFileName;
    }
    try {
      FileUtility.saveData(fileName,AppState.userList,AppState.luckyUserList);
      AppState.dataFileName = fileName;
      return true;
    }
    catch (Exception ex) {
      ex.printStackTrace();
      return false;
    }
  }

  /**
   * 导出幸运用户数据为csv文件
   */
  boolean exportData(){
    if (AppState.luckyUserList==null){
      return false;
    }
    JFileChooser fc = new JFileChooser();
    fc.setFileFilter(new CYFileFilter());
    // show the filechooser
    int result = fc.showOpenDialog(this);
    if(result != JFileChooser.APPROVE_OPTION) {
      return false;
    }

    //judge whether file have the ".csv" suffix
    String fileName = fc.getSelectedFile().getPath();
    String suffix = FileUtility.getSuffix(fileName);
    if (suffix==null||!suffix.equalsIgnoreCase("csv")){
      fileName = fileName+".csv";
    }
    if (FileUtility.exist(fileName)==true){
      int r = JOptionPane.showConfirmDialog(
                this,
                "File already exsited, overwrite it ?",
                "Warning",
                JOptionPane.OK_CANCEL_OPTION
                );
      if (r != JOptionPane.OK_OPTION){
        return false;
      }
    }
    //export lucky user info into a csv file.
    try {
      FileUtility.outputCSVFile(
        fileName,
        LuckyUserInfo.luckyUserTableHeadArray,
        AppState.luckyUserList);
      return true;
    }
    catch (Exception ex) {
      System.out.println("Export file filed");
      return false;
    }
  }
}