Java Tutorial/SWT/Menu
Содержание
Add MenuItem to Menu
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridLayout; 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 MenuAddMenuItem {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout());
// Create the bar menu
Menu menuBar = new Menu(shell, SWT.BAR);
// Create the File item"s dropdown menu
Menu fileMenu = new Menu(menuBar);
// Create all the items in the bar menu
MenuItem fileItem = new MenuItem(menuBar, SWT.CASCADE);
fileItem.setText("File");
fileItem.setMenu(fileMenu);
// Create all the items in the File dropdown menu
MenuItem newItem = new MenuItem(fileMenu, SWT.NONE);
newItem.setText("New");
MenuItem openItem = new MenuItem(fileMenu, SWT.NONE);
openItem.setText("Open...");
MenuItem saveItem = new MenuItem(fileMenu, SWT.NONE);
saveItem.setText("Save");
MenuItem saveAsItem = new MenuItem(fileMenu, SWT.NONE);
saveAsItem.setText("Save As...");
shell.setMenuBar(menuBar);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
}</source>
Add Menu Separator
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridLayout; 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 MenuSeparatorAdd {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout());
// Create the bar menu
Menu menuBar = new Menu(shell, SWT.BAR);
// Create the File item"s dropdown menu
Menu fileMenu = new Menu(menuBar);
// Create all the items in the bar menu
MenuItem fileItem = new MenuItem(menuBar, SWT.CASCADE);
fileItem.setText("File");
fileItem.setMenu(fileMenu);
// Create all the items in the File dropdown menu
MenuItem newItem = new MenuItem(fileMenu, SWT.NONE);
newItem.setText("New");
// Create the first separator
new MenuItem(fileMenu, SWT.SEPARATOR);
MenuItem saveItem = new MenuItem(fileMenu, SWT.NONE);
saveItem.setText("Save");
shell.setMenuBar(menuBar);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
}</source>
Cascade Menu
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; 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 MenuCascade {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout());
Button bn = new Button(shell, SWT.FLAT);
bn.setText("Right Click to see the popup menu");
Menu popupMenu = new Menu(bn);
MenuItem newItem = new MenuItem(popupMenu, SWT.CASCADE);
newItem.setText("New");
MenuItem refreshItem = new MenuItem(popupMenu, SWT.NONE);
refreshItem.setText("Refresh");
MenuItem deleteItem = new MenuItem(popupMenu, SWT.NONE);
deleteItem.setText("Delete");
Menu newMenu = new Menu(popupMenu);
newItem.setMenu(newMenu);
MenuItem shortcutItem = new MenuItem(newMenu, SWT.NONE);
shortcutItem.setText("Shortcut");
MenuItem iconItem = new MenuItem(newMenu, SWT.NONE);
iconItem.setText("Icon");
bn.setMenu(popupMenu);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
}</source>
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2004 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 *******************************************************************************/
import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class MenuItemEnableDynamically {
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);
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();
}
}</source>
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2004 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 *******************************************************************************/
/*
* Menu example snippet: fill a menu dynamically (when menu shown) * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ */
import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class MenuFillDynamically {
public static void main(String[] args) {
final 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);
for (int i = 0; i < 12; i++) {
TreeItem item = new TreeItem(tree, SWT.NONE);
item.setText("Item " + i);
}
menu.addListener(SWT.Show, new Listener() {
public void handleEvent(Event event) {
MenuItem[] menuItems = menu.getItems();
for (int i = 0; i < menuItems.length; i++) {
menuItems[i].dispose();
}
TreeItem[] treeItems = tree.getSelection();
for (int i = 0; i < treeItems.length; i++) {
MenuItem menuItem = new MenuItem(menu, SWT.PUSH);
menuItem.setText(treeItems[i].getText());
}
}
});
tree.setSize(200, 200);
shell.setSize(300, 300);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
