Eclipse插件开发：SWT之TreeExample

该例子演示了SWT界面下的Tree构建及监听。

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
public class TreeExample {

public static void main(String[] args) {

Display display = new Display();

Shell shell = new Shell(display);

shell.setText("Tree Example");

shell.setBounds(100, 100, 200, 200);

shell.setLayout(new FillLayout());

final Tree tree = new Tree(shell, SWT.SINGLE);

for (int i = 1; i < 4; i++) {

TreeItem grandParent = new TreeItem(tree, 0);

grandParent.setText("Grand Parent - " + i);

for (int j = 1; j < 4; j++) {

TreeItem parent = new TreeItem(grandParent, 0);

parent.setText("Parent - " + j);

for (int k = 1; k < 4; k++) {

TreeItem child = new TreeItem(parent, 0);

child.setText("Child - " + k);

}

}

}

tree.addSelectionListener(new SelectionAdapter() {

public void widgetSelected(SelectionEvent event) {

TreeItem[] selected = tree.getSelection();

if (selected.length > 0) {

System.out.println("Selected: " + selected[0].getText());

}

}

});

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch())

display.sleep();

}

display.dispose();

}

}