@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 ajustWidth(Component aChild, int aValue) {
assert aChild.getParent().getLayout() instanceof MarginLayout;
MarginLayout layout = (MarginLayout) aChild.getParent().getLayout();
MarginConstraints anchors = layout.getLayoutConstraints(aChild);
int containerWidth = aChild.getParent().getWidth();
int childLeft = aChild.getLocation().x;
if (anchors.getWidth() != null) {
anchors.getWidth().setPlainValue(aValue, containerWidth);
} else if (anchors.getLeft() != null && anchors.getRight() != null) {
anchors.getRight().setPlainValue(containerWidth - childLeft - aValue, containerWidth);
}
aChild.getParent().revalidate();
aChild.getParent().repaint();
}