protected Dimension calculatePreferredSize(IFigure container, int wHint, int hHint) {
container.validate();
List<IFigure> children = container.getChildren();
Rectangle result = new Rectangle().setLocation(container.getClientArea().getLocation());
for (IFigure c : children) result.union(c.getBounds());
Insets ins = container.getInsets();
result.resize(ins.getWidth(), ins.getHeight());
return result.getSize();
}
@Override
public void relocate(IFigure target) {
Rectangle bounds = target.getBounds().getCopy();
Point location = null;
if (parent instanceof ConnectorEditPart) {
ConnectorEditPart connectorPart = (ConnectorEditPart) parent;
PointList points = getPoints(connectorPart.getConnectionFigure());
location = getPointForEnd(points);
} else {
// if the parent is any other edit part
// use the bounds center
location = parent.getFigure().getBounds().getCenter();
}
if (lastLocation == null) {
lastLocation = location;
}
Dimension delta = location.getDifference(lastLocation);
bounds.translate(delta.width, delta.height);
lastLocation = location.getCopy();
// if the current width is 0 then the
// user has never set the width, calculate it
// here using a maximum number of 400
boolean cropWidth = false;
if (bounds.width == 0) {
Dimension preferred = target.getPreferredSize();
bounds.width = preferred.width;
bounds.width = Math.min(400, bounds.width);
cropWidth = true;
}
if (bounds.width < target.getBorder().getInsets(target).getWidth()) {
// do not allow resizing to zero
bounds.width = target.getBorder().getInsets(target).getWidth();
}
// we must set the bounds to allow recalculation
// of text height (wrapping)
target.setBounds(bounds);
target.validate();
// adjust height to account for word wrapping
bounds.height = getMinimumHeight(target);
if (cropWidth) {
// crop the width here, as this is not a user set
// width and otherwise if near 400 may leave extra
// slack
bounds.width = getMinimumWidth(target);
}
target.setBounds(bounds);
}