JAVA.SWT/JFace: SWT高级控件之表格（Table、TableItem和TableColumn）

JAVA.SWT/JFace: SWT高级控件之表格（Table、TableItem和TableColumn） 2011-09-07 00:03:29

标签：table SWT高级控件 TableColumn

 

package com.wjc.tree;

import java.util.Hashtable;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.custom.ControlEditor;
import org.eclipse.swt.custom.TableCursor;
import org.eclipse.swt.custom.TableEditor;
import org.eclipse.swt.custom.ViewForm;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;

public class TableSample {
    public class TableItemControls{

     Text text;
       CCombo combo;
       TableEditor tableeditor;
       TableEditor tableeditor1;

       public TableItemControls(Text text, CCombo combo, TableEditor tableeditor, TableEditor tableeditor1) {
//      super();
        this.text = text;
        this.combo = combo;
        this.tableeditor = tableeditor;
        this.tableeditor1 = tableeditor1;
       }
       public void dispose()
       {
        text.dispose();
        combo.dispose();
        tableeditor.dispose();
        tableeditor1.dispose();
       }
    };
    private Shell sShell = null; // @jve:decl-index=0:visual-constraint="10,10"
    private ViewForm viewForm = null;
    private ToolBar toolBar = null;
    private Composite composite = null;
    private Table table = null;
    private Menu menu = null;
    private Hashtable<TableItem, TableItemControls> tablecontrols = new Hashtable<TableItem, TableItemControls>();

    //创建ViewForm面板放置工具栏和表格
    private void createViewForm() {
       viewForm = new ViewForm(sShell, SWT.NONE);
       viewForm.setTopCenterSeparate(true);
       createToolBar();
       viewForm.setTopLeft(toolBar);
       createComposite();
       viewForm.setContent(composite);
    }

    //创建工具栏
    private void createToolBar() {
       toolBar = new ToolBar(viewForm, SWT.FLAT);
       final ToolItem add = new ToolItem(toolBar, SWT.PUSH);
       add.setText("添加");
//     add.setImage( ImageFactory.loadImage( toolBar.getDisplay() , ImageFactory.ADD_OBJ));
       final ToolItem del = new ToolItem(toolBar, SWT.PUSH);
       del.setText("删除");
//     del.setImage( ImageFactory.loadImage( toolBar.getDisplay() , ImageFactory.DELETE_OBJ));
       final ToolItem back = new ToolItem(toolBar, SWT.PUSH);
       back.setText("上移");
//     back.setImage( ImageFactory.loadImage( toolBar.getDisplay() , ImageFactory.BACKWARD_NAV));
       final ToolItem forward = new ToolItem(toolBar, SWT.PUSH);
       forward.setText("下移");
//     forward.setImage( ImageFactory.loadImage( toolBar.getDisplay() , ImageFactory.FORWARD_NAV));
       final ToolItem save = new ToolItem(toolBar, SWT.PUSH);
       save.setText("保存");
//     save.setImage( ImageFactory.loadImage( toolBar.getDisplay() , ImageFactory.SAVE_EDIT));
       //工具栏按钮事件处理
       Listener listener = new Listener(){
        public void handleEvent(Event event) {
         //如果单击添加按钮，添加一行，在实际的项目实现中通常是接收输入的参数，案后添加
         //这里为了简单起见，添加固定的一条记录
         if ( event.widget == add )
         {
          TableItem item = new TableItem(table, SWT.NONE);
          item.setText(new String[] {"郑六", "女","568","[e-mail]"});
         }
         //如果单击删除按钮
         else if ( event.widget == del)
         {
          //首先获得表格中所有的行
          TableItem[] items = table.getItems();
          //循环所有行
          for ( int i=items.length-1;i>=0;i-- ){
           //如果该行没有被选中，继续循环
           if ( !items[i].getChecked())
            continue;
           //否则选中，查找该表格中是否有该行
           int index = table.indexOf( items[i]);
           //如果没有该行，继续循环
           if (index<0)
            continue;
           //删除绑定的控件
           TableItemControls cons = tablecontrols.get(items[index]);
           if (cons != null) {
            cons.dispose();
            tablecontrols.remove(items[index]);
            System.out.println("dispose " + index);
           }
           //如果有该行，删除该行
//         items[index].dispose();
           table.remove( index );
           System.out.println("i="+i+", index="+index);
           System.out.println("行数:" + table.getItemCount());
//         table.pack();
          }
         }
         //如果单击上移按钮
         else if ( event.widget == back)
         {
          int selectedRow = table.getSelectionIndex();
          if ( selectedRow > 0 )
           table.setSelection( selectedRow-1 );//设置选中的行数
         }
         //如果单击下移按钮
         else if ( event.widget == forward)
         {
          int selectedRow = table.getSelectionIndex();
          if ( selectedRow > -1&& selectedRow<table.getItemCount()-1)
           table.setSelection( selectedRow+1 );//设置选中的行数
         }
         //如果单击保存按钮
         else if ( event.widget == save)
         {
          TableItem [] items = table.getItems();
          //保存到文件或数据库中，数据持久化，这里省略
          for ( int i=0;i<items.length;i++)
           for (int j=0;j<table.getColumnCount();j++)
            System.out.println(items[i].getText(j));
         }
        }

       };
       //为工具栏的按钮注册事件
       add.addListener( SWT.Selection , listener );
       del.addListener( SWT.Selection, listener );
       back.addListener( SWT.Selection , listener );
       forward.addListener( SWT.Selection, listener );
       save.addListener( SWT.Selection, listener );
    }
    //创建放置表格的面板
    private void createComposite() {
       GridLayout gridLayout = new GridLayout();
       gridLayout.numColumns = 1;
       composite = new Composite(viewForm, SWT.NONE);
       composite.setLayout(gridLayout);
       createTable();
    }
    //创建表格
    private void createTable() {
       //表格布局
       GridData gridData = new org.eclipse.swt.layout.GridData();
       gridData.horizontalAlignment = SWT.FILL;
       gridData.grabExcessHorizontalSpace = true;
       gridData.grabExcessVerticalSpace = true;
       gridData.verticalAlignment = SWT.FILL;

       //创建表格，使用SWT.FULL_SELECTION样式，可同时选中一行
       table = new Table(composite, SWT.MULTI|SWT.FULL_SELECTION|SWT.CHECK);
       table.setHeaderVisible(true);//设置显示表头
       table.setLayoutData(gridData);//设置表格布局
       table.setLinesVisible(true);//设置显示表格线/*
       //创建表头的字符串数组
       String[] tableHeader = {"姓名","性别","电话","电子邮件"};
       for (int i=0;i<tableHeader.length;i++){
        TableColumn tableColumn = new TableColumn(table, SWT.NONE);
        tableColumn.setText( tableHeader[i]);
        //设置表头可移动，默认为false
        tableColumn.setMoveable(true);
       }
       //添加三行数据
       TableItem item = new TableItem(table, SWT.NONE);
       item.setText(new String[] {"张三", "男","123","[e-mail]"});
       //设置图标
       //item.setImage( ImageFactory.loadImage( table.getDisplay(),ImageFactory.ICON_BOY));

       for (int i = 0; i < 5; i++) {
        item = new TableItem(table, SWT.NONE);
        item.setText(new String[] {"李四", "男","4582","[e-mail]"});
       }
       //设置图标
       //item.setImage( ImageFactory.loadImage( table.getDisplay(),ImageFactory.ICON_BOY));

       item = new TableItem(table, SWT.NONE);
       item.setText(new String[] {"周五", "女","567","[e-mail]"});
       //设置图标
       //item.setImage( ImageFactory.loadImage( table.getDisplay(),ImageFactory.ICON_GIRL));

       //添加可编辑的单元格
       // /******************************************************
       TableItem [] items = table.getItems ();
       for (int i=0; i<items.length; i++) {
        //第一列设置，创建TableEditor对象
        final TableEditor editor = new TableEditor (table);
        //创建一个文本框，用于输入文字
        final Text text = new Text (table, SWT.NONE);
        //将文本框当前值，设置为表格中的值
        text.setText(items[i].getText(0));
        //设置编辑单元格水平填充
        editor.grabHorizontal = true;
        //关键方法，将编辑单元格与文本框绑定到表格的第一列
        editor.setEditor(text, items[i], 0);
        //当文本框改变值时，注册文本框改变事件，该事件改变表格中的数据。
        //否则即使改变的文本框的值，对表格中的数据也不会影响
        text.addModifyListener( new ModifyListener(){
         public void modifyText(ModifyEvent e) {
          editor.getItem().setText(1,text.getText());
         }

        });
        //同理，为第二列绑定下来框CCombo
        final TableEditor editor1 = new TableEditor (table);
        final CCombo combo = new CCombo (table, SWT.NONE);
        combo.add("男");
        combo.add("女");
        combo.setText(items[i].getText(1));
        editor1.grabHorizontal = true;
        editor1.setEditor(combo, items[i], 1);
        combo.addModifyListener( new ModifyListener(){
         public void modifyText(ModifyEvent e) {
          editor1.getItem().setText(1,combo.getText());
         }

        });

        // 保存TableItem与绑定Control的对应关系，删除TableItem时使用
        TableItemControls cons = new TableItemControls(text, combo, editor, editor1);
        tablecontrols.put(items[i], cons);

       }
       // *****************************************************/
            // /***************************************************
       //创建TableCursor对象，使用上下左右键可以控制表格
       final TableCursor cursor = new TableCursor(table, SWT.NONE);
       //创建可编辑的控件
       final ControlEditor editor = new ControlEditor(cursor);
       editor.grabHorizontal = true;
       editor.grabVertical = true;
       //为TableCursor对象注册事件
       cursor.addSelectionListener( new SelectionAdapter() {
        //但移动光标，在单元格上单击回车所触发的事件
        public void widgetDefaultSelected(SelectionEvent e) {
         //创建一个文本框控件
         final Text text = new Text(cursor, SWT.NONE);
         //获得当前光标所在的行TableItem对象
         TableItem row = cursor.getRow();
         //获得当前光标所在的列数
         int column = cursor.getColumn();
         //当前光标所在单元格的值赋给文本框
         text.setText(row.getText(column));
         //为文本框注册键盘事件
         text.addKeyListener(new KeyAdapter() {
          public void keyPressed(KeyEvent e) {
           //此时在文本框上单击回车后，这是表格中的数据为修改后文本框中的数据
           //然后释放文本框资源
           if (e.character == SWT.CR) {
            TableItem row = cursor.getRow();
            int column = cursor.getColumn();
            row.setText(column, text.getText());
            text.dispose();
           }
           //如果在文本框中单击了ESC键，则并不对表格中的数据进行修改
           if (e.character == SWT.ESC) {
            text.dispose();
           }
          }
         });
         //注册焦点事件
         text.addFocusListener(new FocusAdapter() {
          //当该文本框失去焦点时，释放文本框资源
          public void focusLost(FocusEvent e) {
           text.dispose();
          }
         });
         //将该文本框绑定到可编辑的控件上
         editor.setEditor(text);
         //设置文本框的焦点
         text.setFocus();
        }
        //移动光标到一个单元格上所触发的事件
        public void widgetSelected(SelectionEvent e) {
         table.setSelection(new TableItem[] { cursor.getRow()});
        }
       });
       cursor.addMouseListener(new MouseListener() {

        @Override
        public void mouseDoubleClick(MouseEvent e) {
         // TODO Auto-generated method stub

        }

        @Override
        public void mouseDown(MouseEvent e) {
         if (e.button==3) { // 右键按下，显示右键菜单
          menu.setVisible(true);
         }
        }

        @Override
        public void mouseUp(MouseEvent e) {
         // TODO Auto-generated method stub

        }

       });
       // ******************************************************/
       //重新布局表格
       for (int i=0; i<tableHeader.length; i++) {
        table.getColumn (i).pack ();
       }
       // /****************************************************
       //为单元格注册选中事件
       table.addSelectionListener( new SelectionAdapter(){
        public void widgetSelected(SelectionEvent e) {
         //获得所有的行数
         int total = table.getItemCount();
         //循环所有行
         for ( int i=0;i<total;i++){
          TableItem item = table.getItem(i);
          //如果该行为选中状态，改变背景色和前景色，否则颜色设置
          if (table.isSelected( i )){
           item.setBackground( sShell.getDisplay().getSystemColor( SWT.COLOR_RED));
           item.setForeground( sShell.getDisplay().getSystemColor( SWT.COLOR_WHITE));
          }else {
           item.setBackground( null );
           item.setForeground( null );
          }
         }
        }

       });
       // ******************************************************/
    }

    public static void main(String[] args) {
       //调用主窗口
       Display display = Display.getDefault();
       TableSample thisClass = new TableSample();
       thisClass.createSShell();
       thisClass.sShell.open();
       while (!thisClass.sShell.isDisposed()) {
        if (!display.readAndDispatch())
         display.sleep();
       }
//     ImageFactory.dispose();
       display.dispose();
    }

    //创建主窗口
    private void createSShell() {
       sShell = new Shell();
       sShell.setText("表格窗口");
       sShell.setLayout(new FillLayout());
       createViewForm();
       createMenu();
//     sShell.setImage( ImageFactory.loadImage( sShell.getDisplay(), ImageFactory.SAMPLES));
       sShell.setSize(new org.eclipse.swt.graphics.Point(307,218));
       sShell.pack();
    }
    //创建上下文菜单
    private void createMenu() {
       //创建弹出式菜单
       menu = new Menu (sShell, SWT.POP_UP);
       //设置该菜单为表格菜单
       table.setMenu (menu);
       //创建删除菜单项
       MenuItem del = new MenuItem (menu, SWT.PUSH);
       del.setText ("删除");
//     del.setImage( ImageFactory.loadImage( sShell.getDisplay(), ImageFactory.DELETE_EDIT));
       //为删除菜单注册事件，当单击时，删除所选择的行
       del.addListener (SWT.Selection, new Listener () {
        public void handleEvent (Event event) {
         // 此处需添加删除绑定Control的代码
         table.remove (table.getSelectionIndices ());
        }
       });
       //创建查看菜单项
       MenuItem view = new MenuItem (menu, SWT.PUSH);
       view.setText ("查看");
//     view.setImage( ImageFactory.loadImage( sShell.getDisplay(), ImageFactory.SCOPY_EDIT));
       //为查看菜单项注册事件，当单击时打印出所选的姓名
       view.addListener (SWT.Selection, new Listener () {
        public void handleEvent (Event event) {
         TableItem[] items = table.getSelection();
         for (int i=0;i<items.length;i++)
          System.out.print(items[i].getText());
        }
       });

       table.setMenu(menu);
    }

    }