mytable.java

自己整理的一些java工具类包括文件处理

      super.removeColumn(columnObj);
    }
  }

  //对MyTable的风格进行初始化,由构造函数调用
  protected void initTable(){
    this.setColumnWidth();
    this.setFont(new Font("Serif",0,14));
    this.setRowHeight(20);
    this.selectFirstRow();//实现 选中第一行
    this.getTableHeader().setReorderingAllowed(false);//实现 默认不能让用户拖动列
    try {
      this.addMouseListenerToHeader(); //实现 排序
    } catch(Exception ex) {
      //说明TableModel不是MyTableSorter
    }
    this.addMouseListener(this);//实现 双击,右键菜单
    this.addKeyListener(this);//实现 键盘Enter,键盘Del,键盘F5刷新
  }
  public MyTable() {
    super();
    //默认是实现MyTableSorter的
    this.setModel(new MyTableSorter());
    //this.setColumnModel(new MyTableColumnModel());
    this.setSelectionModel(new MyTableSelectionModel());
    this.initTable();
  }

  public MyTable(Dimension size) {
    this();
    this.setPreferredScrollableViewportSize(size);
  }

  public MyTable(MyTableModel dm) {
    super(dm);
    //this.setColumnModel(new MyTableColumnModel());
    this.setSelectionModel(new MyTableSelectionModel());
    this.initTable();
  }

  public MyTable(MyTableModel dm, MyTableSelectionModel sm) {
    super(dm);
    this.setSelectionModel(sm);
    this.initTable();
  }

  /*public MyTable(MyTableModel dm, MyTableColumnModel cm) {
    super(dm,cm);
    this.setSelectionModel(new MyTableSelectionModel());
    this.init();
  }

  public MyTable(MyTableModel dm, MyTableColumnModel cm, MyTableSelectionModel sm) {
    super(dm,cm,sm);
    this.init();
  }*/

  public MyTable(int numRows, int numColumns) {
    this(new MyTableSorter(numRows,numColumns));
  }

  public MyTable(Vector rowData, Vector columnNames) {
    this(new MyTableSorter(rowData,columnNames));
  }

  public MyTable(Object[][] rowData, Object[] columnNames) {
    this(new MyTableSorter(rowData,columnNames));
  }

  //默认带了一个JScrollPane
  private JScrollPane tablePane = new JScrollPane();
  /**
   * 获得table的scrollPane
   * @param size table的大小
   * @return JScrollPane(包含了MyTable)
   */
  public JScrollPane getMyTablePane(Dimension size){
    this.tablePane.getViewport().add(this);
    this.tablePane.setPreferredSize(size);
    return this.tablePane;
  }
  public JScrollPane getMyTablePane(int width, int height){
    return this.getMyTablePane(new Dimension(this.getWidth(),this.getHeight()));
  }
  public JScrollPane getMyTablePane(){
    return this.getMyTablePane(this.getWidth(),this.getHeight());
  }

  /**
   * 设定列宽
   */
  public void setColumnWidth() {
    /**@todo: 根据table的实际情况单个设置(让子类来继承,由默认构造函数调用)*/
  }
  public void setColumnWidth(int[] widths) {
    TableColumn column = null;
    int colCount = this.getColumnCount();
    if(null == widths || colCount > widths.length){
      return;
    }

    for(int i = 0; i < colCount; i++) {
      column = this.getColumnModel().getColumn(i);
      column.setPreferredWidth(widths[i]);
    }
  }

  //获得MyTableModel
  public MyTableModel getMyTableModel(){
    return (MyTableModel)this.getModel();
  }

  //获得MyTableSorter
  public MyTableSorter getMyTableSorter(){
    return (MyTableSorter)this.getModel();
  }

  //获得MyTableColumnModel
  public MyTableColumnModel getMyTableColumnModel(){
    return (MyTableColumnModel)this.getColumnModel();
  }

  //获得MyTableSelectionModel
  public MyTableSelectionModel getMyTableSelectionModel(){
    return (MyTableSelectionModel)this.getSelectionModel();
  }

  // Add a mouse listener to the Table to trigger a table sort
  // when a column heading is clicked in the JTable.
  public void removeMouseListenerFromHeader(){
    //全部移除
    JTableHeader th = this.getTableHeader();
    MouseListener[] ls = th.getMouseListeners();
    if(null != ls){
      for (int i = 0; i < ls.length; i++) {
        th.removeMouseListener(ls[i]);
      }
    }
  }
  public void addMouseListenerToHeader() {
    this.getMyTableSorter().addMouseListenerToHeaderInTable(this);
  }

  //MyTable中包含了一个JPopupMenu,子类可以替换掉它
  private JPopupMenu popupMenu = new JPopupMenu("表格菜单");
  public JPopupMenu getPopupMenu(){
    return this.popupMenu;
  }
  public void setPopupMenu(JPopupMenu popupMenu){
    this.popupMenu = popupMenu;
  }
  public void addMenuItemToPopupMenu(JMenuItem menuItem){
    this.popupMenu.add(menuItem);
  }

  //实现MouseListener: 双击,右键菜单
  public void mouseClicked(MouseEvent e) {
    if(e.getClickCount() == 2 && this.getSelectedRow() != -1) {
      this.onDoubleClicked(e);
    }else{
      this.onClicked(e);
    }
  }
  public void onDoubleClicked(MouseEvent e){//双击之后,显示详细信息Dlg,修改
    /**@todo: is double click && do something */
  }

  public void onClicked(MouseEvent e) { //单击之后,选中行,可能弹出右键菜单
    //let's select it!
    int rowSeled = this.rowAtPoint(new Point(e.getX(), e.getY()));
    if( -1 != rowSeled) {
      this.selectRow(rowSeled);
    }
    if(-1 != this.getSelectedRow() && e.isPopupTrigger()) {
      this.popupMenu.show(e.getComponent(),e.getX(),e.getY());
    }
  }
  public void mousePressed(MouseEvent e) {
    onClicked(e);
  }
  public void mouseReleased(MouseEvent e) {
    onClicked(e);
  }
  public void mouseEntered(MouseEvent e) {
    /**@todo: is mouseEntered && do something */
  }
  public void mouseExited(MouseEvent e) {
    /**@todo: is mouseExited && do something */
  }

  //删除行之前是否要询问,默认要问
  private boolean isAsk = true;
  public boolean getIsAsk(){
    return isAsk;
  }
  public void setIsAsk(boolean isAsk){
    this.isAsk = isAsk;
  }

  //实现KeyListener: 键盘Enter,键盘Del,键盘F5刷新
  public void keyTyped(KeyEvent e) {
    /**@todo: is keyTyped && do something */
  }
  public void keyReleased(KeyEvent e) {
    /**@todo: is keyReleased && do something */
  }
  public void keyPressed(KeyEvent e) {
    int key = e.getKeyCode();
    switch(key) {
      case KeyEvent.VK_ENTER:
        if(-1 != this.getSelectedRow()) {
          onKeyEnter(e);
        }
        return;
      case KeyEvent.VK_DELETE:
        int row = this.getSelectedRow();
        if( -1 != row && (!this.isAsk ||
            JOptionPane.YES_OPTION == JOptionPane.showConfirmDialog(this,
            "您确实要删除第 " + row + " 条数据吗?", "删除数据",
            JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE))) {
          onKeyDelete(e);//doBussiness(),没有考虑到事务操作,比如返回操作是否成功
          this.removeRow(row);//删除行
        }
        return;
      case KeyEvent.VK_F5:
        this.revalidate();
        onKeyF5(e);
        return;
      default:
        return;
    }
  }

  //键盘Enter,键盘Del,键盘F5刷新
  public void onKeyEnter(KeyEvent e){//相当于双击鼠标onDoubleClick
    onDoubleClicked(null);
  }
  public void onKeyDelete(KeyEvent e){//相当于删除行之前提示之后按了"是"
    /**@todo: is onKeyDelete && do something */
  }
  public void onKeyF5(KeyEvent e){//相当于刷新MyTable,重新查询数据
    this.refresh();
  }

  //F5刷新MyTable
  public void refresh(){
    this.setDataVector(this.getDataVector());
    this.selectFirstRow();
    this.revalidate();
  }
}