static TreeItem PreviousItem(Tree tree, TreeItem item) {
   if (item == null) return null;
   TreeItem childItem = item;
   TreeItem parentItem = childItem.getParentItem();
   int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem);
   if (index == 0) {
     return parentItem;
   } else {
     TreeItem nextItem =
         parentItem == null ? tree.getItem(index - 1) : parentItem.getItem(index - 1);
     int count = nextItem.getItemCount();
     while (count > 0 && nextItem.getExpanded()) {
       nextItem = nextItem.getItem(count - 1);
       count = nextItem.getItemCount();
     }
     return nextItem;
   }
 }
Beispiel #2
0
  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());

    final Tree tree1 = new Tree(shell, SWT.NONE);
    new TreeColumn(tree1, SWT.NONE).setWidth(40);
    final TreeItem treeItem1 = new TreeItem(tree1, SWT.NONE);
    treeItem1.setText("A");
    final TreeItem treeItem12 = new TreeItem(tree1, SWT.NONE);
    treeItem12.setText("W");
    final Tree tree2 = new Tree(shell, SWT.BORDER);
    new TreeColumn(tree2, SWT.NONE).setWidth(40);
    final TreeItem treeItem2 = new TreeItem(tree2, SWT.NONE);
    treeItem2.setText("A");
    final TreeItem treeItem22 = new TreeItem(tree2, SWT.NONE);
    treeItem22.setText(".");
    final Tree tree3 = new Tree(shell, SWT.V_SCROLL);
    new TreeColumn(tree3, SWT.NONE).setWidth(40);
    final TreeItem treeItem3 = new TreeItem(tree3, SWT.NONE);
    treeItem3.setText("A");
    final TreeItem treeItem32 = new TreeItem(tree3, SWT.NONE);
    treeItem32.setText("ABC");
    final Tree tree4 = new Tree(shell, SWT.H_SCROLL);
    new TreeColumn(tree4, SWT.NONE).setWidth(40);
    final TreeItem treeItem4 = new TreeItem(tree4, SWT.NONE);
    treeItem4.setText(".");
    final TreeItem treeItem42 = new TreeItem(tree4, SWT.NONE);
    treeItem42.setText("A.");
    final Tree tree5 = new Tree(shell, SWT.V_SCROLL | SWT.H_SCROLL);
    new TreeColumn(tree5, SWT.NONE).setWidth(40);
    final TreeItem treeItem5 = new TreeItem(tree5, SWT.NONE);
    treeItem5.setText("W");
    final TreeItem treeItem52 = new TreeItem(tree5, SWT.NONE);
    treeItem52.setText("Width");

    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) display.sleep();
    }
    display.dispose();
    //	Display display = new Display ();
    //	Shell shell = new Shell (display);
    //	shell.setLayout(new FillLayout());
    //	Image imageOpen = new Image(display, TestButton.class.getResourceAsStream("openFolder.gif"));
    //	Image imageClose = new Image(display,
    // TestButton.class.getResourceAsStream("closedFolder.gif"));
    //	final Tree tree = new Tree (shell, SWT.BORDER | SWT.CHECK);
    //	tree.setSize (100, 100);
    //	shell.setSize (300, 200);
    //	for (int i=0; i<2; i++) {
    //		TreeItem iItem = new TreeItem (tree, 0);
    //		iItem.setText ("TreeItem (0) -" + i);
    //		iItem.setImage(imageOpen);
    //		for (int j=0; j<2; j++) {
    //			TreeItem jItem = new TreeItem (iItem, 0);
    //			jItem.setText ("TreeItem (1) -" + j);
    //			jItem.setImage(imageClose);
    //			for (int k=0; k<3; k++) {
    //				TreeItem kItem = new TreeItem (jItem, 0);
    //				kItem.setText ("TreeItem (2) -" + k);
    ////				for (int l=0; l<2; l++) {
    ////					TreeItem lItem = new TreeItem (kItem, 0);
    ////					lItem.setText ("TreeItem (3) -" + l);
    ////				}
    //			}
    //		}
    //	}
    //	shell.open ();
    //	while (!shell.isDisposed()) {
    //		if (!display.readAndDispatch ()) display.sleep ();
    //	}
    //	imageOpen.dispose();
    //	imageClose.dispose();
    //	display.dispose ();
  }
  public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.FULL_SELECTION | SWT.BORDER);
    tree.setHeaderVisible(true);
    TreeColumn column0 = new TreeColumn(tree, SWT.LEFT);
    column0.setText("Column 0");
    TreeColumn column1 = new TreeColumn(tree, SWT.LEFT);
    column1.setText("Column 1");
    TreeColumn column2 = new TreeColumn(tree, SWT.LEFT);
    column2.setText("Column 2");
    for (int i = 0; i < 9; i++) {
      TreeItem item = new TreeItem(tree, SWT.NONE);
      item.setText("item " + i);
      item.setText(1, "column 1 - " + i);
      item.setText(2, "column 2 - " + i);
      for (int j = 0; j < 9; j++) {
        TreeItem subItem = new TreeItem(item, SWT.NONE);
        subItem.setText("item " + i + " " + j);
        subItem.setText(1, "column 1 - " + i + " " + j);
        subItem.setText(2, "column 2 - " + i + " " + j);
        for (int k = 0; k < 9; k++) {
          TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
          subsubItem.setText("item " + i + " " + j + " " + k);
          subsubItem.setText(1, "column 1 - " + i + " " + j + " " + k);
          subsubItem.setText(2, "column 2 - " + i + " " + j + " " + k);
        }
      }
    }
    column0.pack();
    column1.pack();
    column2.pack();

    Heartbeat =
        new Runnable() {
          @Override
          public void run() {
            if (!Tracking || tree.isDisposed()) return;
            Point cursor = display.getCursorLocation();
            cursor = display.map(null, tree, cursor);
            Scroll(tree, cursor.x, cursor.y);
            display.timerExec(ScrollSpeed, Heartbeat);
          }
        };
    Listener listener =
        new Listener() {
          @Override
          public void handleEvent(Event event) {
            switch (event.type) {
              case SWT.MouseEnter:
                Tracking = true;
                display.timerExec(0, Heartbeat);
                break;
              case SWT.MouseExit:
                Tracking = false;
                break;
            }
          }
        };
    tree.addListener(SWT.MouseEnter, listener);
    tree.addListener(SWT.MouseExit, listener);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) display.sleep();
    }
    display.dispose();
  }
 static TreeItem NextItem(Tree tree, TreeItem item) {
   if (item == null) return null;
   if (item.getExpanded()) {
     return item.getItem(0);
   } else {
     TreeItem childItem = item;
     TreeItem parentItem = childItem.getParentItem();
     int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem);
     int count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount();
     while (true) {
       if (index + 1 < count) {
         return parentItem == null ? tree.getItem(index + 1) : parentItem.getItem(index + 1);
       } else {
         if (parentItem == null) {
           return null;
         } else {
           childItem = parentItem;
           parentItem = childItem.getParentItem();
           index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem);
           count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount();
         }
       }
     }
   }
 }