mytablesorter.java

自己整理的一些java工具类包括文件处理

package testSwing.mytable;

import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;

/**
 * <p>Title: MyTableSorter</p>
 * <p>Description: 实现自己的TableSoter,功能如下:</p>
 * 继承原有MyTableModel的功能
 * 实现了切换排序功能Sorter(排序的图片默认)
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: pubinfo</p>
 * @author chineseren
 * @version 1.0
 */

public class MyTableSorter extends MyTableModel {

  public MyTableSorter() {
    reallocateIndexes();
  }

  public MyTableSorter(int rowCount, int columnCount) {
    super(rowCount, columnCount);
    reallocateIndexes();
  }

  public MyTableSorter(Vector columnNames, int rowCount) {
    super(columnNames, rowCount);
    reallocateIndexes();
  }

  public MyTableSorter(Object[] columnNames, int rowCount) {
    super(columnNames, rowCount);
    reallocateIndexes();
  }

  public MyTableSorter(Vector data, Vector columnNames) {
    super(data, columnNames);
    reallocateIndexes();
  }

  public MyTableSorter(Object[][] data, Object[] columnNames) {
    super(data, columnNames);
    reallocateIndexes();
  }

  /**
   * A sorter for TableModels. The sorter has a model (conforming to TableModel)
   * and itself implements TableModel. TableSorter does not store or copy
   * the data in the TableModel, instead it maintains an array of
   * integers which it keeps the same size as the number of rows in its
   * model. When the model changes it notifies the sorter that something
   * has changed eg. "rowsAdded" so that its internal array of integers
   * can be reallocated. As requests are made of the sorter (like
   * getValueAt(row, col) it redirects them to its model via the mapping
   * array. That way the TableSorter appears to hold another copy of the table
   * with the rows in a different order. The sorting algorthm used is stable
   * which means that it does not move around rows when its comparison
   * function returns 0 to denote that they are equivalent.
   *
   * @version 1.5 12/17/97
   * @author Philip Milne, modified by me
   */
  private final boolean debug = false;
  private static final int UP = 0;
  private static final int DOWN = 1;
  private ImageIcon upIcon = new ImageIcon("images/uparrow.gif");//10*10.gif
  private ImageIcon downIcon = new ImageIcon("images/downarrow.gif");
  public ImageIcon getUpIcon(){
    return this.upIcon;
  }
  public void setUpIcon(ImageIcon upIcon){
    this.upIcon = upIcon;
  }
  public ImageIcon getDownIcon(){
    return this.downIcon;
  }
  public void setDownIcon(ImageIcon downIcon){
    this.downIcon = downIcon;
  }
  /*private String upIconPath = "images/uparrow.gif";//比如:"test/images/downarrow.gif"
  private String downIconPath = "images/downarrow.gif";
  public String getUpIconPath(){
    return this.upIconPath;
  }
  public void setUpIconPath(String upIconPath){
    this.upIconPath = upIconPath;
  }
  public String getDownIconPath(){
    return this.downIconPath;
  }
  public void setDownIconPath(String downIconPath){
    this.downIconPath = downIconPath;
  }*/

  private int[] indexes;
  private Vector sortingColumns = new Vector();
  private boolean ascending = true;
  private int compares;
  //For the table column header sort icon
  int       sortOrder = DOWN; //expected sort order
  int       sortColumn = -1; //sort which model column
  int       sortViewColumn = -1; //sort which view column

  public int[] getIndices() {
    return indexes;
  }
  // The mapping only affects the contents of the data rows.
  // Pass all requests to these rows through the mapping array: "indexes".
  public Object getValueAt(int aRow, int aColumn) {
    checkModel();
    return super.getValueAt(aRow, aColumn);
  }

  public void setValueAt(Object aValue, int aRow, int aColumn) {
    checkModel();
    super.setValueAt(aValue, aRow, aColumn);
  }

  public void tableChanged(TableModelEvent e) {
    //System.out.println("Sorter: tableChanged");
    reallocateIndexes();
    super.tableChanged(e);
  }

  //生成列的带图片的HeaderRenderer
  private DefaultTableCellRenderer createHeaderRenderer(String colName,Icon icon){
    DefaultTableCellRenderer picLabel = new DefaultTableCellRenderer();
    picLabel.setText(colName);
    picLabel.setBorder(UIManager.getBorder("TableHeader.CellBorder"));
    picLabel.setHorizontalAlignment(JLabel.CENTER);
    picLabel.setBackground(java.awt.Color.lightGray);
    picLabel.setForeground(java.awt.Color.blue);
    if(null != icon){
      picLabel.setIcon(icon);
    }
    return picLabel;
  }

  // Add a mouse listener to the Table to trigger a table sort
  // when a column heading is clicked in the JTable.
  public void addMouseListenerToHeaderInTable(JTable table) {
    final MyTableSorter sorter = this;
    final JTable tableView = table;
    //turn off this, otherwise, it would highlight the column.
    //tableView.setColumnSelectionAllowed(false);
    MouseAdapter listMouseListener = new MouseAdapter() {
      public void mouseClicked(MouseEvent e) {
        TableColumnModel columnModel = tableView.getColumnModel();
        int viewColumn = columnModel.getColumnIndexAtX(e.getX());
        debug("=======================================");
        debug("view column=" + viewColumn);
        int column = tableView.convertColumnIndexToModel(viewColumn);
        debug("model column=" + column);
        debug("old sorting column=" + sortColumn);
        debug("old sorting view column=" + sortViewColumn);
        debug("old sorting order=" + sortOrder);
        if(e.getClickCount() == 1 && viewColumn != -1) {
          // jump between columns, ascending and descending
          sorter.sortByColumn(column,(sortColumn != column) || (sortOrder == DOWN));
          sortColumn = column;
          // now memorize this sorting column
          // clear all column headers. Since we don't know which one
          // has the sorting flag, so clear them all.
          // don't try to memorize that flag(view column) because
          // users can switch view columns without notifying you!

          //目前列头即能采用JLabel显示成图片格式,也能用<img/>显示,而且还要用"file:///"相对于当前盘符的路径
          DefaultTableCellRenderer picLabel;
          /*int len = columnModel.getColumnCount();
          for(int i = 0; i < len; i++) {
            picLabel = sorter.createHeaderRenderer(tableView.getColumnName(i),null);
            //columnModel.getColumn(i).setHeaderValue(picLabel.getText());
            columnModel.getColumn(i).setHeaderRenderer(picLabel);
          }*/
          // now set the correct icon for the column
          String columntitle = tableView.getColumnName(viewColumn);
          columntitle = "<html><font color=blue><B>" + columntitle + "</B></font></html>";
          if(sortViewColumn != viewColumn) {
            //columntitle = "<html><img src='file:///"+sorter.downIconPath+"' border='0' width='10' height='10'><font color=blue>"
            //+ columntitle + "</font></html>";
            picLabel = sorter.createHeaderRenderer(columntitle,downIcon);
            sortOrder = UP;
          } else if(sortOrder == DOWN) {
            //columntitle = "<html><img src='file:///"+sorter.downIconPath+"' border='0' width='10' height='10'><font color=blue>"
            //+ columntitle + "</font></html>";
            picLabel = sorter.createHeaderRenderer(columntitle,downIcon);
            sortOrder = UP;
          } else {
            //columntitle = "<html><img src='file:///"+sorter.upIconPath+"' border='0' width='10' height='10'><font color=blue>"
            //+ columntitle + "</font></html>";
            picLabel = sorter.createHeaderRenderer(columntitle,upIcon);
            sortOrder = DOWN;
          }
          tableView.getColumnModel().getColumn(viewColumn).setHeaderRenderer(picLabel);
          //tableView.getColumnModel().getColumn(viewColumn).setHeaderValue(columntitle);
          sortViewColumn = viewColumn;
          // these two lines are working, so we need to figure out the height
          tableView.getTableHeader().setPreferredSize(new java.awt.Dimension(0,25));
          tableView.getTableHeader().resizeAndRepaint();
          // Setting the preferred size on the column header renderer will not
          // work when you are using rowheaders and corner components in the
          // containing scrollpane. If the corner component is taller than your
          // table header, it will not display fully. So instead, set the preferred
          // size of the viewport containing your table/column header like this:
          // scrollpane.getColumnHeader().setPreferredSize(new java.awt.Dimension(0, 100));
          // however, for now, we just set this:
          // JLabel l=(JLabel)tableView.getColumnModel().getColumn(viewColumn).getHeaderRenderer();
          // l.setPreferredSize(new java.awt.Dimension(0,100));
          // however, it's working for this app, since
          // System.out.println(tableView.getColumnModel().getColumn(viewColumn).getHeaderRenderer().getClass().getName());
          // returns
          // lib.swing.table.JComponentTableCellRenderer
          //MyTable排序之后会将各个列宽度平均化,所以要重新调整
          try {
            ((MyTable)tableView).setColumnWidth();