private boolean concernRegionContainer() {
boolean regionImpacted = false;
EditPart hostPart = getHost();
if (hostPart instanceof AbstractDiagramElementContainerEditPart) {
IDiagramElementEditPart ideep = (IDiagramElementEditPart) hostPart;
DDiagramElement dde = ideep.resolveDiagramElement();
regionImpacted =
dde instanceof DNodeContainer
&& new DNodeContainerExperimentalQuery((DNodeContainer) dde).isRegionContainer();
}
return regionImpacted;
}
private int getStackDirection() {
int direction = PositionConstants.NONE;
EditPart hostPart = getHost();
if (hostPart instanceof AbstractDiagramElementContainerEditPart) {
IDiagramElementEditPart ideep = (IDiagramElementEditPart) hostPart;
DDiagramElement dde = ideep.resolveDiagramElement();
if (dde instanceof DNodeContainer) {
DNodeContainerExperimentalQuery query =
new DNodeContainerExperimentalQuery((DNodeContainer) dde);
if (query.isVerticalStackContainer()) {
direction = PositionConstants.NORTH_SOUTH;
} else if (query.isHorizontaltackContainer()) {
direction = PositionConstants.EAST_WEST;
}
}
}
return direction;
}