public CombinerTarget prepare(final CombinerSource source, boolean force) {
DockableDisplayer displayer = source.getOldDisplayer();
if (displayer != null) {
DisplayerCombinerTarget operation = displayer.prepareCombination(source, force);
if (operation != null) {
return new DisplayerTarget(operation);
}
}
if (!force) {
return null;
}
return new CombinerTarget() {
public void paint(
Graphics g,
Component component,
StationPaint paint,
Rectangle stationBounds,
Rectangle dockableBounds) {
paint.drawInsertion(g, source.getParent(), stationBounds, dockableBounds);
}
public DisplayerCombinerTarget getDisplayerCombination() {
return null;
}
};
}
public Dockable combine(CombinerSource source, CombinerTarget target) {
if (target instanceof DisplayerTarget) {
return ((DisplayerTarget) target).execute(source);
} else {
DockStation parent = source.getParent();
PlaceholderMap placeholders = source.getPlaceholders();
StackDockStation stack = new StackDockStation(parent.getTheme());
stack.setController(parent.getController());
if (placeholders != null) {
stack.setPlaceholders(placeholders);
}
stack.drop(source.getOld());
stack.drop(source.getNew());
return stack;
}
}
private Combiner get(CombinerSource source) {
return controller.getTheme().getCombiner(source.getParent());
}