swt_table 回车可编辑Esc取消

package 宿舍管理系统;  
 
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 jtable {  
    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","zhengliu@sina.com"});  
         }  
         //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","zhangsan@sina.com"});  
       //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","lisi@sina.com"});  
       }  
       //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","zhouwu@sina.com"});  
       //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);
//        final Text text2 = 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();  
       jtable thisClass = new jtable();  
       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(500,400));  
  //     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);  
    }  
 
    }