Examples of java.awt.CheckboxMenuItem

java.awt.CheckboxMenuItem
This class represents a check box that can be included in a menu. Selecting the check box in the menu changes its state from "on" to "off" or from "off" to "on."
The following picture depicts a menu which contains an instance of CheckBoxMenuItem:

The item labeled Check shows a check box menu item in its "off" state.
When a check box menu item is selected, AWT sends an item event to the item. Since the event is an instance of ItemEvent, the processEvent method examines the event and passes it along to processItemEvent. The latter method redirects the event to any ItemListener objects that have registered an interest in item events generated by this menu item. @version 1.72, 07/11/06 @author Sami Shaio @see java.awt.event.ItemEvent @see java.awt.event.ItemListener @since JDK1.0


        // Création du popup
        aboutItem = new MenuItem("À Propos...");
        globalPreferencesItem = new MenuItem("Préférences...");
        displayFrameItem = new MenuItem("Afficher la fenêtre");
        displayTooltipCheckItem = new CheckboxMenuItem("Afficher le tooltip");
        desktopClientItem = new MenuItem("Nouveau message...");
        exitItem = new MenuItem("Quitter");
        Menu checkersMenu = new Menu("Comptes");


        // Ajout des composants du popup

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        PopupMenu popupMenu = new PopupMenu();
        MenuItem citation = new MenuItem(bundle.getString(Constants.NEWCITATION));
        citation.addActionListener(this);
        citation.setActionCommand(Constants.NEWCITATION);
        popupMenu.add(citation);
        CheckboxMenuItem checkboxMenuItem = new CheckboxMenuItem(bundle.getString(Constants.PAUSE), false);
        checkboxMenuItem.addItemListener(this);
        checkboxMenuItem.setActionCommand(Constants.PAUSE);
        popupMenu.add(checkboxMenuItem);
        MenuItem settingsMenuItem = new MenuItem(bundle.getString(Constants.CONFIGSCREEN));
        settingsMenuItem.addActionListener(this);
        settingsMenuItem.setActionCommand(Constants.CONFIGSCREEN);
        popupMenu.add(settingsMenuItem);

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    }


    void addMenuItem(Object targetMenu, String label, String command, String currentSelection) {
        MenuItem menuItem;
        if (isSelected(command, currentSelection)) {
            menuItem = new CheckboxMenuItem(label, true);
        } else {
            menuItem = new MenuItem(label);
        }
        menuItem.setActionCommand(command);
        menuItem.addActionListener(this);

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        AwtMItem(MenuItem item) {
            
            fItem = item;
            try {
                CheckboxMenuItem chItem = (CheckboxMenuItem) fItem;
                chItem.addItemListener(new ItemListener() {
                    public void itemStateChanged(ItemEvent e) {
                        handleSelected();
                    }
                });
            }

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        }
        
        public void setState(boolean checked) {
            
            try {
                CheckboxMenuItem item = (CheckboxMenuItem) fItem;
                item.setState(checked);
            }
            catch(ClassCastException e) {
                throw new Error("Cannot perform setChecked on non-checkbox item");
            }
        }

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            @Override
            public void actionPerformed(ActionEvent arg0) {
                System.exit(0);
            }
        });
        trayMenuAutorip = new CheckboxMenuItem("Clipboard Autorip");
        trayMenuAutorip.addItemListener(new ItemListener() {
            @Override
            public void itemStateChanged(ItemEvent arg0) {
                ClipboardUtils.setClipboardAutoRip(trayMenuAutorip.getState());
                configClipboardAutorip.setSelected(trayMenuAutorip.getState());

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    }
    addBasicMenuItems();
  }


  public void addGroupMenuItem(Group g){
    CheckboxMenuItem item = new CheckboxMenuItem(g.getName());
    item.setActionCommand(""+g.getId());
    item.addItemListener(this);
    menu.add(item);
    menuItems.add(item);
  }

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