MainClass.java Source code

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Here is the source code for MainClass.java

Source

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.TreeEvent;
import org.eclipse.swt.events.TreeListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;

public class MainClass {

    public static void main(String[] a) {
        final Display d = new Display();
        final Shell s = new Shell(d);

        s.setSize(250, 200);
        s.setText("A Tree Shell Example");
        s.setLayout(new FillLayout(SWT.HORIZONTAL));
        final Tree t = new Tree(s, SWT.SINGLE | SWT.BORDER);
        final TreeItem child1 = new TreeItem(t, SWT.NONE, 0);
        child1.setText("1");
        //    child1.setImage(new Image(d, "c:\\icons\\folder.gif"));
        final TreeItem child2 = new TreeItem(t, SWT.NONE, 1);
        child2.setText("2");
        final TreeItem child2a = new TreeItem(child2, SWT.NONE, 0);
        child2a.setText("2A");
        final TreeItem child2b = new TreeItem(child2, SWT.NONE, 1);
        child2b.setText("2B");
        final TreeItem child3 = new TreeItem(t, SWT.NONE, 2);
        child3.setText("3");

        final List l = new List(s, SWT.BORDER | SWT.SINGLE);

        t.addTreeListener(new TreeListener() {
            public void treeExpanded(TreeEvent e) {
                TreeItem ti = (TreeItem) e.item;
                //      ti.setImage(new Image(d, "c:\\icons\\open.gif"));
            }

            public void treeCollapsed(TreeEvent e) {
                TreeItem ti = (TreeItem) e.item;
                //        ti.setImage(new Image(d, "c:\\icons\\folder.gif"));
            }
        });

        t.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                TreeItem ti = (TreeItem) e.item;
                populateList(ti.getText());
            }

            private void populateList(String type) {
                if (type.equals("1")) {
                    l.removeAll();
                    l.add("1");
                    l.add("2");
                }
                if (type.equals("2")) {
                    l.removeAll();
                }
                if (type.equals("2A")) {
                    l.removeAll();
                    l.add("3");
                    l.add("4");
                }
                if (type.equals("2B")) {
                    l.removeAll();
                    l.add("5");
                    l.add("6");
                }
                if (type.equals("3")) {
                    l.removeAll();
                    l.add("7");
                    l.add("8");
                }
            }
        });

        s.open();
        while (!s.isDisposed()) {
            if (!d.readAndDispatch())
                d.sleep();
        }
        d.dispose();
    }
}