Example usage for org.eclipse.swt.widgets Tree Tree

Introduction

In this page you can find the example usage for org.eclipse.swt.widgets Tree Tree.

Prototype

public Tree(Composite parent, int style) 

Source Link

Document

Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

Usage

From source file:org.eclipse.swt.snippets.Snippet73.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 73");
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI);
    final Menu menu = new Menu(shell, SWT.POP_UP);
    tree.setMenu(menu);/*  ww  w  .ja  v  a2  s.  c  o m*/
    for (int i = 0; i < 12; i++) {
        TreeItem treeItem = new TreeItem(tree, SWT.NONE);
        treeItem.setText("Item " + i);
        MenuItem menuItem = new MenuItem(menu, SWT.PUSH);
        menuItem.setText(treeItem.getText());
    }
    menu.addListener(SWT.Show, event -> {
        MenuItem[] menuItems = menu.getItems();
        TreeItem[] treeItems = tree.getSelection();
        for (int i = 0; i < menuItems.length; i++) {
            String text = menuItems[i].getText();
            int index = 0;
            while (index < treeItems.length) {
                if (treeItems[index].getText().equals(text))
                    break;
                index++;
            }
            menuItems[i].setEnabled(index != treeItems.length);
        }
    });
    Rectangle clientArea = shell.getClientArea();
    tree.setBounds(clientArea.x, clientArea.y, 200, 200);
    shell.setSize(300, 300);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:MenuItemEnableDynamically.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI);
    final Menu menu = new Menu(shell, SWT.POP_UP);
    tree.setMenu(menu);/*from  w  ww .  j a v  a  2s  .c o m*/
    for (int i = 0; i < 12; i++) {
        TreeItem treeItem = new TreeItem(tree, SWT.NONE);
        treeItem.setText("Item " + i);
        MenuItem menuItem = new MenuItem(menu, SWT.PUSH);
        menuItem.setText(treeItem.getText());
    }
    menu.addListener(SWT.Show, new Listener() {
        public void handleEvent(Event event) {
            MenuItem[] menuItems = menu.getItems();
            TreeItem[] treeItems = tree.getSelection();
            for (int i = 0; i < menuItems.length; i++) {
                String text = menuItems[i].getText();
                int index = 0;
                while (index < treeItems.length) {
                    if (treeItems[index].getText().equals(text))
                        break;
                    index++;
                }
                menuItems[i].setEnabled(index != treeItems.length);
            }
        }
    });
    tree.setSize(200, 200);
    shell.setSize(300, 300);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet61.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 61");
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
    for (int i = 0; i < 4; i++) {
        TreeItem item0 = new TreeItem(tree, 0);
        item0.setText("Item " + i);
        for (int j = 0; j < 4; j++) {
            TreeItem item1 = new TreeItem(item0, 0);
            item1.setText("SubItem " + i + " " + j);
            for (int k = 0; k < 4; k++) {
                TreeItem item2 = new TreeItem(item1, 0);
                item2.setText("SubItem " + i + " " + j + " " + k);
            }/* w w  w.  j  av a2  s  . c om*/
        }
    }
    tree.addListener(SWT.Selection, e -> {
        String string = "";
        TreeItem[] selection = tree.getSelection();
        for (int i = 0; i < selection.length; i++)
            string += selection[i] + " ";
        System.out.println("Selection={" + string + "}");
    });
    tree.addListener(SWT.DefaultSelection, e -> {
        String string = "";
        TreeItem[] selection = tree.getSelection();
        for (int i = 0; i < selection.length; i++)
            string += selection[i] + " ";
        System.out.println("DefaultSelection={" + string + "}");
    });
    tree.addListener(SWT.Expand, e -> System.out.println("Expand={" + e.item + "}"));
    tree.addListener(SWT.Collapse, e -> System.out.println("Collapse={" + e.item + "}"));
    tree.getItems()[0].setExpanded(true);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet202.java

public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 202");
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.VIRTUAL | SWT.BORDER);
    tree.addListener(SWT.SetData, event -> {
        TreeItem item = (TreeItem) event.item;
        TreeItem parentItem = item.getParentItem();
        String text = null;//ww  w .j  ava2s .c o  m
        if (parentItem == null) {
            text = "node " + tree.indexOf(item);
        } else {
            text = parentItem.getText() + " - " + parentItem.indexOf(item);
        }
        item.setText(text);
        item.setItemCount(10);
    });
    tree.setItemCount(20);
    shell.setSize(400, 300);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet170.java

public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 170");
    shell.setLayout(new FillLayout());
    Tree tree = new Tree(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
    tree.setHeaderVisible(true);/*from   ww w. j a v a  2  s  . c o m*/
    TreeColumn column1 = new TreeColumn(tree, SWT.LEFT);
    column1.setText("Column 1");
    column1.setWidth(200);
    TreeColumn column2 = new TreeColumn(tree, SWT.CENTER);
    column2.setText("Column 2");
    column2.setWidth(200);
    TreeColumn column3 = new TreeColumn(tree, SWT.RIGHT);
    column3.setText("Column 3");
    column3.setWidth(200);
    for (int i = 0; i < 4; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText(new String[] { "item " + i, "abc", "defghi" });
        for (int j = 0; j < 4; j++) {
            TreeItem subItem = new TreeItem(item, SWT.NONE);
            subItem.setText(new String[] { "subitem " + j, "jklmnop", "qrs" });
            for (int k = 0; k < 4; k++) {
                TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
                subsubItem.setText(new String[] { "subsubitem " + k, "tuv", "wxyz" });
            }
        }
    }
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch()) {
            display.sleep();
        }
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet291.java

public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 291");
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER);
    for (int i = 0; i < 5; i++) {
        TreeItem treeItem = new TreeItem(tree, SWT.NONE);
        treeItem.setText("item" + i);
        for (int j = 0; j < 3; j++) {
            TreeItem subItem = new TreeItem(treeItem, SWT.NONE);
            subItem.setText("item" + i + j);
        }//from  ww w .  j a  v  a2  s.  c  om
    }
    tree.getAccessible().addAccessibleListener(new AccessibleAdapter() {
        @Override
        public void getName(AccessibleEvent e) {
            if (e.childID == ACC.CHILDID_SELF) {
                e.result = "This is the Accessible Name for the Tree";
            } else {
                TreeItem item = (TreeItem) display.findWidget(tree, e.childID);
                if (item != null) {
                    e.result = "This is the Accessible Name for the TreeItem: " + item.getText();
                }
            }
        }
    });
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet302.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 302");
    FillLayout layout = new FillLayout();
    layout.marginHeight = 10;/*from   ww w  . j a  v  a2  s. c  om*/
    layout.marginWidth = 10;
    shell.setLayout(layout);
    Tree tree = new Tree(shell, SWT.BORDER | SWT.NO_SCROLL);
    for (int i = 0; i < 10; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText("Item " + i);
    }
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet358.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 358");
    shell.setLayout(new GridLayout());
    final Tree tree = new Tree(shell, SWT.NONE);
    tree.setLayoutData(new GridData(200, 200));
    for (int i = 0; i < 9; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText("root-level item " + i);
        for (int j = 0; j < 9; j++) {
            new TreeItem(item, SWT.NONE).setText("item " + i + "-" + j);
        }/*from  w w w  .  jav a2s. c  om*/
    }

    Button button = new Button(shell, SWT.PUSH);
    button.setText("Print item visibilities");
    button.addListener(SWT.Selection, event -> {
        Rectangle treeBounds = new Rectangle(0, 0, 0, 0);
        Point treeSize = tree.getSize();
        treeBounds.width = treeSize.x;
        treeBounds.height = treeSize.y;
        TreeItem[] rootItems = tree.getItems();
        for (int i = 0; i < rootItems.length; i++) {
            TreeItem rootItem = rootItems[i];
            System.out.println(rootItem.getText() + " is at least partially visible? "
                    + treeBounds.intersects(rootItem.getBounds()));
            TreeItem[] childItems = rootItem.getItems();
            for (int j = 0; j < childItems.length; j++) {
                TreeItem childItem = childItems[j];
                System.out.println(childItem.getText() + " is at least partially visible? "
                        + treeBounds.intersects(childItem.getBounds()));
            }
        }
    });

    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet8.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Lazy Tree");
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER);
    File[] roots = File.listRoots();
    for (int i = 0; i < roots.length; i++) {
        TreeItem root = new TreeItem(tree, 0);
        root.setText(roots[i].toString());
        root.setData(roots[i]);//from ww  w. j  a  v a 2 s  .  c  om
        new TreeItem(root, 0);
    }
    tree.addListener(SWT.Expand, event -> {
        final TreeItem root = (TreeItem) event.item;
        TreeItem[] items = root.getItems();
        for (int i1 = 0; i1 < items.length; i1++) {
            if (items[i1].getData() != null)
                return;
            items[i1].dispose();
        }
        File file = (File) root.getData();
        File[] files = file.listFiles();
        if (files == null)
            return;
        for (int i2 = 0; i2 < files.length; i2++) {
            TreeItem item = new TreeItem(root, 0);
            item.setText(files[i2].getName());
            item.setData(files[i2]);
            if (files[i2].isDirectory()) {
                new TreeItem(item, 0);
            }
        }
    });
    Point size = tree.computeSize(300, SWT.DEFAULT);
    int width = Math.max(300, size.x);
    int height = Math.max(300, size.y);
    shell.setSize(shell.computeSize(width, height));
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet193.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 193");
    shell.setLayout(new RowLayout(SWT.HORIZONTAL));
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.CHECK);
    tree.setLayoutData(new RowData(-1, 300));
    tree.setHeaderVisible(true);/*from ww  w  .j  av  a 2s  .  co m*/
    TreeColumn column = new TreeColumn(tree, SWT.LEFT);
    column.setText("Column 0");
    column = new TreeColumn(tree, SWT.CENTER);
    column.setText("Column 1");
    column = new TreeColumn(tree, SWT.LEFT);
    column.setText("Column 2");
    column = new TreeColumn(tree, SWT.RIGHT);
    column.setText("Column 3");
    column = new TreeColumn(tree, SWT.CENTER);
    column.setText("Column 4");
    for (int i = 0; i < 5; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        String[] text = new String[] { i + ":0", i + ":1", i + ":2", i + ":3", i + ":4" };
        item.setText(text);
        for (int j = 0; j < 5; j++) {
            TreeItem subItem = new TreeItem(item, SWT.NONE);
            text = new String[] { i + "," + j + ":0", i + "," + j + ":1", i + "," + j + ":2",
                    i + "," + j + ":3", i + "," + j + ":4" };
            subItem.setText(text);
            for (int k = 0; k < 5; k++) {
                TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
                text = new String[] { i + "," + j + "," + k + ":0", i + "," + j + "," + k + ":1",
                        i + "," + j + "," + k + ":2", i + "," + j + "," + k + ":3",
                        i + "," + j + "," + k + ":4" };
                subsubItem.setText(text);
            }
        }
    }
    Listener listener = e -> System.out.println("Move " + e.widget);
    TreeColumn[] columns = tree.getColumns();
    for (int i = 0; i < columns.length; i++) {
        columns[i].setWidth(100);
        columns[i].setMoveable(true);
        columns[i].addListener(SWT.Move, listener);
    }
    Button b = new Button(shell, SWT.PUSH);
    b.setText("invert column order");
    b.addListener(SWT.Selection, e -> {
        int[] order = tree.getColumnOrder();
        for (int i = 0; i < order.length / 2; i++) {
            int temp = order[i];
            order[i] = order[order.length - i - 1];
            order[order.length - i - 1] = temp;
        }
        tree.setColumnOrder(order);
    });
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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