Swing Hacks

Minimize to a Mini-Frame #40

Chapter 5, Windows, Dialogs, and Frames

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211

HACK

on right-clicks. If you are using Java 5.0, you can add another line to make

the frame always be on top. This can be annoying to some users, however,

so a real program would have a preference to control that feature:

// hide the extra components

bottom.hide( );

// add the pop up

panel.addMouseListener(this);

// stay on top

frame.setAlwaysOnTop(true);

// show the frame again

frame.pack( );

frame.setLocation(location);

frame.setVisible(true);

With the frame prepared, the code packs it, gives it the location of the origi-

nal frame, and makes it visible again.

Restore the Frame

When the user triggers the pop-up menu and selects Normal, the

switchToNormal( ) method will be called. This method reverses what the

switchToMini( ) method did:

public void switchToNormal( ) {

// nuke the old frame and build a new one

Point location = frame.getLocation( );

frame.setVisible(false);

frame = new JFrame( );

frame.setUndecorated(false);

frame.getContentPane( ).add(panel);

// show the extra components

bottom.show( );

frame.setJMenuBar(menubar);

// hide the pop up

panel.removeMouseListener(this);

// turn off stay on top

frame.setAlwaysOnTop(false);

// show the frame again

frame.pack( );

frame.setSize(normal_size);

frame.setLocation(location);

frame.setVisible(true);

}

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Chapter 5, Windows, Dialogs, and Frames

#40 Minimize to a Mini-Frame

HACK ...