public void actionPerformed(ActionEvent e) {
KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();
Container container = kfm.getCurrentFocusCycleRoot();
FocusTraversalPolicy policy = container.getFocusTraversalPolicy();
if (null == policy) policy = kfm.getDefaultFocusTraversalPolicy();
Component next =
moveDown
? policy.getComponentAfter(container, PaletteGroupHeader.this)
: policy.getComponentBefore(container, PaletteGroupHeader.this);
if (null != next && next instanceof PaletteComponentList) {
final PaletteComponentList list = (PaletteComponentList) next;
if (list.getModel().getSize() != 0) {
list.takeFocusFrom(PaletteGroupHeader.this, list == myComponentList ? 0 : -1);
return;
} else {
next =
moveDown
? policy.getComponentAfter(container, next)
: policy.getComponentBefore(container, next);
}
}
if (null != next && next instanceof PaletteGroupHeader) {
next.requestFocus();
}
}
protected void focusNext(JComponent comp) {
FocusTraversalPolicy policy = FlatWelcomeFrame.this.getFocusTraversalPolicy();
if (policy != null) {
Component next = policy.getComponentAfter(FlatWelcomeFrame.this, comp);
if (next != null) {
next.requestFocus();
}
}
}
protected void focusPrev(JComponent comp) {
FocusTraversalPolicy policy = FlatWelcomeFrame.this.getFocusTraversalPolicy();
if (policy != null) {
Component prev = policy.getComponentBefore(FlatWelcomeFrame.this, comp);
if (prev != null) {
prev.requestFocus();
}
}
}