@Override
public void addLayoutComponent(Component aComponent, Object aConstraints) {
if (aConstraints instanceof MarginConstraints) {
MarginConstraints constraints = (MarginConstraints) aConstraints;
// horizontal check
if (constraints.getWidth() == null
&& (constraints.getLeft() == null || constraints.getRight() == null)) {
throw new IllegalStateException(MarginConstraints.HORIZONTAL_VALUE_MISSING);
} else if (constraints.getWidth() != null
&& constraints.getLeft() == null
&& constraints.getRight() == null) {
throw new IllegalStateException(MarginConstraints.HORIZONTAL_VALUE_MISSING);
}
// vertical check
if (constraints.getHeight() == null
&& (constraints.getTop() == null || constraints.getBottom() == null)) {
throw new IllegalStateException(MarginConstraints.HORIZONTAL_VALUE_MISSING);
} else if (constraints.getHeight() != null
&& constraints.getTop() == null
&& constraints.getBottom() == null) {
throw new IllegalStateException(MarginConstraints.HORIZONTAL_VALUE_MISSING);
}
layouted.put(aComponent, constraints);
} else {
throw new IllegalArgumentException("The constraints must be instance of MarginConstraints");
}
}
public static void ajustHeight(java.awt.Component aChild, int aValue) {
assert aChild.getParent().getLayout() instanceof MarginLayout;
MarginLayout layout = (MarginLayout) aChild.getParent().getLayout();
MarginConstraints anchors = layout.getLayoutConstraints(aChild);
int containerHeight = aChild.getParent().getHeight();
int childTop = aChild.getLocation().y;
if (anchors.getHeight() != null) {
anchors.getHeight().setPlainValue(aValue, containerHeight);
} else if (anchors.getTop() != null && anchors.getBottom() != null) {
anchors.getBottom().setPlainValue(containerHeight - childTop - aValue, containerHeight);
}
aChild.getParent().revalidate();
aChild.getParent().repaint();
}