org.eclipse.swt.snippets.Snippet61.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet61.java

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/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Tree example snippet: print selected items in a tree
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet61 {

    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);
                }
            }
        }
        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();
    }
}