Java by API/javax.swing/JPopupMenu
Содержание
<source lang="java">
import java.awt.BorderLayout; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import javax.swing.JTextField; import javax.swing.KeyStroke; import javax.swing.text.BadLocationException; public class MainClass {
public static void main(final String args[]) {
JFrame frame = new JFrame("Popup Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JTextField textField = new JTextField();
frame.add(textField, BorderLayout.NORTH);
final JPopupMenu popup = new JPopupMenu();
JMenuItem menuItem1 = new JMenuItem("Option 1");
popup.add(menuItem1);
JMenuItem menuItem2 = new JMenuItem("Option 2");
popup.add(menuItem2);
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
popup.show(textField, 10,10);
}
};
KeyStroke keystroke =
KeyStroke.getKeyStroke(KeyEvent.VK_PERIOD, 0, false);
textField.registerKeyboardAction(actionListener, keystroke,
JComponent.WHEN_FOCUSED);
frame.setSize(250, 150);
frame.setVisible(true);
}
}
</source>
JPopupMenu: addPopupMenuListener(PopupMenuListener lis)
<source lang="java">
import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import javax.swing.event.PopupMenuEvent; import javax.swing.event.PopupMenuListener; public class MainClass {
public static void main(String[] a) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ActionListener actionListener = new PopupActionListener();
PopupMenuListener popupMenuListener = new MyPopupMenuListener();
JPopupMenu popupMenu = new JPopupMenu("Title");
popupMenu.addPopupMenuListener(popupMenuListener);
JMenuItem cutMenuItem = new JMenuItem("Cut");
cutMenuItem.addActionListener(actionListener);
popupMenu.add(cutMenuItem);
JMenuItem copyMenuItem = new JMenuItem("Copy");
copyMenuItem.addActionListener(actionListener);
popupMenu.add(copyMenuItem);
JMenuItem pasteMenuItem = new JMenuItem("Paste");
pasteMenuItem.addActionListener(actionListener);
pasteMenuItem.setEnabled(false);
popupMenu.add(pasteMenuItem);
popupMenu.addSeparator();
JMenuItem findMenuItem = new JMenuItem("Find");
findMenuItem.addActionListener(actionListener);
popupMenu.add(findMenuItem);
JButton label = new JButton();
frame.add(label);
label.setComponentPopupMenu(popupMenu);
frame.setSize(350, 250);
frame.setVisible(true);
}
} class PopupActionListener implements ActionListener {
public void actionPerformed(ActionEvent actionEvent) {
System.out.println("Selected: " + actionEvent.getActionCommand());
}
} class MyPopupMenuListener implements PopupMenuListener {
public void popupMenuCanceled(PopupMenuEvent popupMenuEvent) {
System.out.println("Canceled");
}
public void popupMenuWillBecomeInvisible(PopupMenuEvent popupMenuEvent) {
System.out.println("Becoming Invisible");
}
public void popupMenuWillBecomeVisible(PopupMenuEvent popupMenuEvent) {
System.out.println("Becoming Visible");
}
}
</source>
JPopupMenu: addSeparator()
<source lang="java">
import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import javax.swing.event.PopupMenuEvent; import javax.swing.event.PopupMenuListener; public class MainClass {
public static void main(String[] a) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ActionListener actionListener = new PopupActionListener();
PopupMenuListener popupMenuListener = new MyPopupMenuListener();
JPopupMenu popupMenu = new JPopupMenu("Title");
popupMenu.addPopupMenuListener(popupMenuListener);
JMenuItem cutMenuItem = new JMenuItem("Cut");
cutMenuItem.addActionListener(actionListener);
popupMenu.add(cutMenuItem);
JMenuItem copyMenuItem = new JMenuItem("Copy");
copyMenuItem.addActionListener(actionListener);
popupMenu.add(copyMenuItem);
JMenuItem pasteMenuItem = new JMenuItem("Paste");
pasteMenuItem.addActionListener(actionListener);
pasteMenuItem.setEnabled(false);
popupMenu.add(pasteMenuItem);
popupMenu.addSeparator();
JMenuItem findMenuItem = new JMenuItem("Find");
findMenuItem.addActionListener(actionListener);
popupMenu.add(findMenuItem);
JButton label = new JButton();
frame.add(label);
label.setComponentPopupMenu(popupMenu);
frame.setSize(350, 250);
frame.setVisible(true);
}
} class PopupActionListener implements ActionListener {
public void actionPerformed(ActionEvent actionEvent) {
System.out.println("Selected: " + actionEvent.getActionCommand());
}
} class MyPopupMenuListener implements PopupMenuListener {
public void popupMenuCanceled(PopupMenuEvent popupMenuEvent) {
System.out.println("Canceled");
}
public void popupMenuWillBecomeInvisible(PopupMenuEvent popupMenuEvent) {
System.out.println("Becoming Invisible");
}
public void popupMenuWillBecomeVisible(PopupMenuEvent popupMenuEvent) {
System.out.println("Becoming Visible");
}
}
</source>
JPopupMenu: setDefaultLightWeightPopupEnabled(boolean aFlag)
<source lang="java">
import javax.swing.JPopupMenu; public class Main {
public static void main(String[] argv) throws Exception {
boolean lwPopup = JPopupMenu.getDefaultLightWeightPopupEnabled(); // true
// Globally use heavyweight components for all popup menus
JPopupMenu.setDefaultLightWeightPopupEnabled(false);
}
}
</source>
JPopupMenu: setLightWeightPopupEnabled(boolean aFlag)
<source lang="java">
import javax.swing.JMenu; import javax.swing.JMenuItem; public class Main {
public static void main(String[] argv) throws Exception {
JMenu menu = new JMenu("Menu Label");
menu.add(new JMenuItem("Item Label"));
boolean lwPopup = menu.getPopupMenu().isLightWeightPopupEnabled(); // true
menu.getPopupMenu().setLightWeightPopupEnabled(false);
}
}
</source>
JPopupMenu: show(Component invoker, int x, int y)
<source lang="java">
import java.awt.BorderLayout; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import javax.swing.JTextField; import javax.swing.KeyStroke; import javax.swing.text.BadLocationException; public class MainClass {
public static void main(final String args[]) {
JFrame frame = new JFrame("Popup Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JTextField textField = new JTextField();
frame.add(textField, BorderLayout.NORTH);
final JPopupMenu popup = new JPopupMenu();
JMenuItem menuItem1 = new JMenuItem("Option 1");
popup.add(menuItem1);
JMenuItem menuItem2 = new JMenuItem("Option 2");
popup.add(menuItem2);
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
popup.show(textField, 10,10);
}
};
KeyStroke keystroke =
KeyStroke.getKeyStroke(KeyEvent.VK_PERIOD, 0, false);
textField.registerKeyboardAction(actionListener, keystroke,
JComponent.WHEN_FOCUSED);
frame.setSize(250, 150);
frame.setVisible(true);
}
}
</source>
