秋千-打开Windows菜单

Question

For user convenience, and after reading user interface guidelines, I would like a JMenu with Items as open Windows in my program, eg different (non-modal) dialogs/frames.

The menu lists the windows, and focuses them when clicked (Mentioned in Mac Human Interface Guidelines). They are common in most programs.

How could I do this? So far I think using a HashMap and WindowAdapters , that add and remove when windows appear, but I can't work out how to implement this.

Note - I have a main frame, and dialogs that are called in separate classes from the main frame which would have the menu. Sorry, no especially relevant code that helps explain. I am aware of Window.getWindows() but unsure how this would be used.

Answer 1

How to Use Actions is a good choice "if you have two or more components that perform the same function." Compete examples include these:

• FileMenu , which illustrates a menu of files.

• ImageApp , which opens images from a menu bar or a context menu.

• InternalFrameFocus , a JInternalFrame example cited there shows how to use setSelected() in a menu's Action .

   Action action = new AbstractAction(name) { @Override public void actionPerformed(ActionEvent ae) { try { MyFrame.this.setSelected(true); } catch (PropertyVetoException e) { e.printStackTrace(); } } };