JFace中的表格型树TableTreeViewer-白红宇

表格型树是用TableTreeViewer来实现,自从SWT下的TableTree被废弃之后,其扩展TableTreeViewer也成了鸡肋,不再被建议使用,既然Tree可以实现表格型树,那么其扩展TreeView当然也没有问题,用TreeViewer实现的表格型树,之前的TreeViewer实例菜单的呢过功能代码不用做任何修改.

修改的不多,一是在主程序为树加上几列对象TreeColumn,二是创建一个新的表格型树的标签器,关于TreeColumn在Tree组件的时候有此内容的讲解.这个地方和之前一样.

TreeViewer3.java

1 public class TreeViewer3 { 2     public static void main(String[] args) { 3         new TreeViewer3().open(); 4     } 5  6     public void open() { 7         final Display display = new Display(); 8         final Shell shell = new Shell(); 9         shell.setSize(300, 300);10         // -----------界面核心代码-------------------11         shell.setLayout(new FillLayout());12         TreeViewer tv = new TreeViewer(shell, SWT.BORDER);13 14         Tree tree = tv.getTree();15         tree.setHeaderVisible(true);16         TreeColumn column = new TreeColumn(tree, SWT.LEFT);17         column.setText("名称");18         column.setWidth(150);19         column = new TreeColumn(tree, SWT.LEFT);20         column.setText("子结点数");21         column.setWidth(80);22         column = new TreeColumn(tree, SWT.LEFT);23         column.setText("性别");24         column.setWidth(40);25 26         tv.setContentProvider(new TreeViewerContentProvider());27         tv.setLabelProvider(new MyTableLableProvider());28         // 和TableViewer一样，数据的入口也是setInput方法29         List
     
       input = (List)DataFactory.createTreeData();30         tv.setInput(input);31         // --------------插入代码：START------------------32         MyActionGroup actionGroup = new MyActionGroup(tv);// 生成一个ActionGroup对象33         actionGroup.fillContextMenu(new MenuManager());// 将按钮注入到菜单对象中34         // -----------END------------------35         shell.open();36         while (!shell.isDisposed()) {37             if (!display.readAndDispatch())38                 display.sleep();39         }40         display.dispose();41     }42 }

标签器换了一个,它必须实现ITableLabelProvider接口.

1 public class MyTableLableProvider implements ITableLabelProvider { 2     public String getColumnText(Object element, int columnIndex) { 3         ITreeEntry entry = (ITreeEntry) element; 4         switch (columnIndex) { 5         case 0: 6             return entry.getName(); 7         case 1: 8             List list = entry.getChildren(); 9             if (list == null)10                 return "";11             return String.valueOf(list.size());12         case 2:13             if (entry instanceof People) {14                 boolean sex = ((People) entry).isSex();15                 return sex ? "男" : "女";16             }17             return "";18         default:19             return "";20         }21     }22 23     public Image getColumnImage(Object element, int columnIndex) {24         return null;25     }26     public void addListener(ILabelProviderListener listener) {}27     public void removeListener(ILabelProviderListener listener) {}28     public void dispose() {}29     public boolean isLabelProperty(Object element, String property) {30         return false;31     }32 }

本文转自SummerChill博客园博客，原文链接：http://www.cnblogs.com/DreamDrive/p/4178219.html，如需转载请自行联系原作者