A little afternoon fun with MenusI20061030-0800

1 files changed, 76 insertions, 0 deletions

diff --git a/examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet005MenuUpdater.java b/examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet005MenuUpdater.java
new file mode 100644
index 00000000..0040231d
--- /dev/null
+++ b/examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet005MenuUpdater.java
@@ -0,0 +1,76 @@
+/*******************************************************************************
+ * Copyright (c) 2006 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jface.examples.databinding.snippets;
+
+import java.util.Date;
+import java.util.Iterator;
+
+import org.eclipse.jface.databinding.observable.list.WritableList;
+import org.eclipse.jface.internal.databinding.provisional.swt.MenuUpdater;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Menu;
+import org.eclipse.swt.widgets.MenuItem;
+import org.eclipse.swt.widgets.Shell;
+
+/**
+ */
+public class Snippet005MenuUpdater {
+	public static void main(String[] args) {
+		final Display display = new Display();
+		Shell shell = new Shell(display);
+
+		final WritableList menuItemStrings = new WritableList();
+		display.timerExec(5000, new Runnable() {
+			public void run() {
+				System.out.println("adding item");
+				menuItemStrings.add(new Date().toString());
+				display.timerExec(5000, this);
+			}
+		});
+
+		Menu bar = new Menu(shell, SWT.BAR);
+		shell.setMenuBar(bar);
+		MenuItem fileItem = new MenuItem(bar, SWT.CASCADE);
+		fileItem.setText("&Test Menu");
+		final Menu submenu = new Menu(shell, SWT.DROP_DOWN);
+		fileItem.setMenu(submenu);
+		new MenuUpdater(submenu) {
+			protected void updateMenu() {
+				System.out.println("updating menu");
+				MenuItem[] items = submenu.getItems();
+				int itemIndex = 0;
+				for (Iterator it = menuItemStrings.iterator(); it.hasNext();) {
+					MenuItem item;
+					if (itemIndex < items.length) {
+						item = items[itemIndex++];
+					} else {
+						item = new MenuItem(submenu, SWT.NONE);
+					}
+					String string = (String) it.next();
+					item.setText(string);
+				}
+				while (itemIndex < items.length) {
+					items[itemIndex++].dispose();
+				}
+			}
+		};
+
+		shell.open();
+
+		// The SWT event loop
+		while (!shell.isDisposed()) {
+			if (!display.readAndDispatch()) {
+				display.sleep();
+			}
+		}
+	}
+}