public void moveChild(ShapePart childPart, int newIndex) {
ModelElementList<IModelElement> list = this.modelElement.read(this.modelProperty);
int oldIndex = list.indexOf(childPart.getLocalModelElement());
this.modelElement.detach(this.shapePropertyListener, this.propertyName);
if (oldIndex < newIndex) {
for (int i = oldIndex; i < newIndex; i++) {
list.moveDown(childPart.getLocalModelElement());
}
} else {
for (int i = newIndex; i < oldIndex; i++) {
list.moveUp(childPart.getLocalModelElement());
}
}
this.modelElement.attach(this.shapePropertyListener, this.propertyName);
this.children.remove(childPart);
this.children.add(newIndex, childPart);
broadcast(new ShapeReorderEvent(this));
}
