I am working on a java project where I use some swing components. I have a problem with the JMenuBar. I have a class that extends the JMenuBar. It is functional, it as couple of JMenu objects and couple of JMenuItems in each of it. The problem is that in some situations after I select a JMenu, it is not deselected automatically. For example if I select a JMenu (when a JMenu is selected its JMenuItems becomes visible like a list) and press alt+tab on the keyboard, JFrame object that has the JMenuBar gets hidden, but the JMenu stands still on the screen. Another situation is that, when I select a JMenu and move the main JFrame using mouse, the frame gets moved but JMenu doesn't get deselected nor moved, again stands still. I will put some images and my code to be more explanatory.
This is the scenario of pressing alt+tab after selecting a menu -- This is unwanted:
http://i.imgur.com/0qL2pdD.png)
This is the scenario of moving the main JFrame with mouse right after selecting a JMenu -- This is also unwanted:
http://i.imgur.com/c0BL4dE.png
And here is my source code for my custom JMenuBar class:
public class EOPLMenuBar extends JMenuBar{
private EOPLMenuBarListenerDelegate delegate;
public EOPLMenuBar(EOPLMenuBarListenerDelegate delegate){
this.delegate = delegate;
initEOPLMenuBar();
}
private void initEOPLMenuBar(){
// --- JMenu Initializations -------- //
JMenu eoplMenu = new JMenu("EOPL");
Font f = new Font(eoplMenu.getFont().getFontName(), Font.BOLD, eoplMenu.getFont().getSize());
eoplMenu.setFont(f);
eoplMenu.addMenuListener(new MenuListener() {
@Override
public void menuSelected(MenuEvent menuEvent) {
System.out.println("Menu selected");
//To change body of implemented methods use File | Settings | File Templates.
}
@Override
public void menuDeselected(MenuEvent menuEvent) {
System.out.println("Menu deselected");
}
@Override
public void menuCanceled(MenuEvent menuEvent) {
System.out.println("Menu canceled");
}
});
JMenu fileMenu = new JMenu("File");
JMenu examplesMenu = new JMenu("Examples");
this.add(eoplMenu);
this.add(fileMenu);
this.add(examplesMenu);
///------EOPLMenu items---------- ///
JMenuItem item1 = new JMenuItem(MenuItemType.ABOUT_EOPL_GUI.getName());
JMenuItem item2 = new JMenuItem(MenuItemType.SETTINGS.getName());
JMenuItem item3 = new JMenuItem(MenuItemType.QUIT_EOPL_GUI.getName());
eoplMenu.add(item1);
eoplMenu.addSeparator();
eoplMenu.add(item2);
eoplMenu.addSeparator();
eoplMenu.add(item3);
///------FileMenu items-----------///
JMenuItem item4 = new JMenuItem(MenuItemType.SAVE_FILE.getName());
fileMenu.add(item4);
///------ExampleMenu items -------///
JMenu letMenu = new JMenu("Proc");
JMenuItem item5 = new JMenuItem(MenuItemType.PROC_EXAMPLE_1.getName());
JMenuItem item6 = new JMenuItem(MenuItemType.PROC_EXAMPLE_2.getName());
letMenu.add(item5);
letMenu.add(item6);
JMenuItem item7 = new JMenuItem(MenuItemType.LET_EXAMPLE_1.getName());
JMenuItem item8 = new JMenuItem(MenuItemType.LET_EXAMPLE_2.getName());
JMenuItem item9 = new JMenuItem(MenuItemType.LETREC_EXAMPLE_1.getName());
JMenuItem item10 = new JMenuItem(MenuItemType.LETREC_EXAMPLE_2.getName());
JMenuItem item11 = new JMenuItem(MenuItemType.CALL_BY_NEED_EXAMPLE_1.getName());
JMenuItem item12 = new JMenuItem(MenuItemType.CALL_BY_NEED_EXAMPLE_2.getName());
JMenuItem item13 = new JMenuItem(MenuItemType.CALL_BY_REF_EXAMPLE_1.getName());
JMenuItem item14 = new JMenuItem(MenuItemType.CALL_BY_REF_EXAMPLE_2.getName());
examplesMenu.add(letMenu);
examplesMenu.add(item7);
examplesMenu.add(item8);
examplesMenu.add(item9);
examplesMenu.add(item10);
examplesMenu.add(item11);
examplesMenu.add(item12);
examplesMenu.add(item13);
examplesMenu.add(item14);
// -- Add ActionListeners to all items.
item1.addActionListener(new EOPLMenuBarListener(item1.getText()));
item2.addActionListener(new EOPLMenuBarListener(item2.getText()));
item3.addActionListener(new EOPLMenuBarListener(item3.getText()));
item4.addActionListener(new EOPLMenuBarListener(item4.getText()));
item5.addActionListener(new EOPLMenuBarListener(item5.getText()));
item6.addActionListener(new EOPLMenuBarListener(item6.getText()));
}
private class EOPLMenuBarListener implements ActionListener{
private String itemType;
public EOPLMenuBarListener(String type){
this.itemType = type;
}
@Override
public void actionPerformed(ActionEvent actionEvent) {
//To change body of implemented methods use File | Settings | File Templates.
if(itemType.equals(EOPLMenuBar.MenuItemType.LET_EXAMPLE_1.getName())){
delegate.prepareUIWithExampleSourcecode("let x = -(4,1) in -(x,1)","let");
}else if(itemType.equals(EOPLMenuBar.MenuItemType.LET_EXAMPLE_2.getName())){
delegate.prepareUIWithExampleSourcecode("let x = 3 in let x = -(x,1) in x","let");
}
}
}
public enum MenuItemType{
ABOUT_EOPL_GUI (String.format("%-15s","About EOPL-GUI")),
SETTINGS (String.format("%-15s","Settings")),
QUIT_EOPL_GUI (String.format("%-15s","Quit EOPL-GUI")),
SAVE_FILE (String.format("%-15s","Save File")),
LET_EXAMPLE_1 (String.format("%-15s","Let example-1")),
LET_EXAMPLE_2 (String.format("%-15s","Let example-2")),
PROC_EXAMPLE_1 (String.format("%-15s","Example 1")),
PROC_EXAMPLE_2 (String.format("%-15s","Example 2")),
LETREC_EXAMPLE_1 (String.format("%-15s","Letrec example-1")),
LETREC_EXAMPLE_2 (String.format("%-15s","Letrec example-2")),
CALL_BY_NEED_EXAMPLE_1 (String.format("%-15s","Call-by-need example-1")),
CALL_BY_NEED_EXAMPLE_2 (String.format("%-15s","Call-by-need example-2")),
CALL_BY_REF_EXAMPLE_1 (String.format("%-15s","Call-by-ref example-1")),
CALL_BY_REF_EXAMPLE_2 (String.format("%-15s","Call-by-ref example-2"));
private String name;
MenuItemType(String name){
this.name = name;
}
public String getName(){
return name;
}
}
}
And here is my source code where I use my custom JMenuBar:
private static void startGUIFrame(){
JFrame frame = new JFrame("EOPL GUI");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(true);
frame.setSize(900, 700);
frame.setLocationRelativeTo(null);
//Add content to the window.
frame.add(eoplPanel);
frame.setJMenuBar(new EOPLMenuBar(controller));
//Display the window.
frame.pack();
frame.setVisible(true);
}
I searched for hours on google, but no luck. Any help is appreciated.