[英]How to add “send to” Option with JFileChooser
I am working on a small project towards my grad, where I need to have "send to" option with JFileChooser. 我正在为我的毕业生设计一个小型项目,我需要在JFileChooser中具有“发送至”选项。 I want this option to be appeared on Right Click event. 我希望此选项出现在右键事件中。 Kindly suggest how to go about it? 请提出该怎么做?
Note: I am using windows 7. 注意:我正在使用Windows 7。
You might use JPopupMenu 您可以使用JPopupMenu
For example, 例如,
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.border.BevelBorder;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
public class PopupMenuExample extends JPanel {
public JPopupMenu popup;
public PopupMenuExample() {
popup = new JPopupMenu();
ActionListener menuListener = new ActionListener() {
public void actionPerformed(ActionEvent event) {
System.out.println("Popup menu item ["
+ event.getActionCommand() + "] was pressed.");
if(event.getActionCommand().equals("Send To")) {
JFileChooser fileChooser = new JFileChooser();
int result = fileChooser.showSaveDialog(null);
// your logic here
}
}
};
JMenuItem item;
popup.add(item = new JMenuItem("Send To"));
item.setHorizontalTextPosition(JMenuItem.RIGHT);
item.addActionListener(menuListener);
popup.add(item = new JMenuItem("Left"));
item.setHorizontalTextPosition(JMenuItem.RIGHT);
item.addActionListener(menuListener);
popup.add(item = new JMenuItem("Center"));
item.setHorizontalTextPosition(JMenuItem.RIGHT);
item.addActionListener(menuListener);
popup.add(item = new JMenuItem("Right"));
item.setHorizontalTextPosition(JMenuItem.RIGHT);
item.addActionListener(menuListener);
popup.add(item = new JMenuItem("Full"));
item.setHorizontalTextPosition(JMenuItem.RIGHT);
item.addActionListener(menuListener);
popup.addSeparator();
popup.add(item = new JMenuItem("Settings . . ."));
item.addActionListener(menuListener);
popup.setLabel("Justification");
popup.setBorder(new BevelBorder(BevelBorder.RAISED));
popup.addPopupMenuListener(new PopupPrintListener());
addMouseListener(new MousePopupListener());
}
// An inner class to check whether mouse events are the popup trigger
class MousePopupListener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
checkPopup(e);
}
public void mouseClicked(MouseEvent e) {
checkPopup(e);
}
public void mouseReleased(MouseEvent e) {
checkPopup(e);
}
private void checkPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
popup.show(PopupMenuExample.this, e.getX(), e.getY());
}
}
}
// An inner class to show when popup events occur
class PopupPrintListener implements PopupMenuListener {
public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
System.out.println("Popup menu will be visible!");
}
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
System.out.println("Popup menu will be invisible!");
}
public void popupMenuCanceled(PopupMenuEvent e) {
System.out.println("Popup menu is hidden!");
}
}
public static void main(String s[]) {
JFrame frame = new JFrame("Popup Menu Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(new PopupMenuExample());
frame.setSize(300, 300);
frame.setVisible(true);
}
}
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