/**
* Layouts all combined fragments of this view. The width is determined by the position of the
* covered lifelines.
*/
private void layoutCombinedFragments() {
for (Entry<CombinedFragment, CombinedFragmentView> entry : combinedFragments.entrySet()) {
CombinedFragmentView combinedFragmentView = entry.getValue();
float minX = Float.MAX_VALUE;
float maxX = -1;
for (Lifeline lifeline : entry.getKey().getCovered()) {
LifelineView lifelineView = lifelines.get(lifeline);
Vector3D position = lifelineView.getPosition(TransformSpace.GLOBAL);
minX = Math.min(minX, position.getX());
maxX = Math.max(maxX, position.getX() + lifelineView.getWidth() + LIFEINE_SPACING);
/**
* Take into consideration the size of other fragments as well, since they could be quite
* wide.
*/
for (InteractionFragment fragment : lifeline.getCoveredBy()) {
/**
* Check whether the fragment is part of this combined fragment in its containment
* hierarchy.
*/
if (EcoreUtil.isAncestor(entry.getKey(), fragment)) {
RamRectangleComponent fragmentView = fragments.get(fragment);
if (fragmentView != null) {
Vector3D fragmentPosition = fragmentView.getPosition(TransformSpace.GLOBAL);
maxX =
Math.max(
maxX, fragmentPosition.getX() + fragmentView.getWidth() + LIFEINE_SPACING);
}
}
}
}
Vector3D position = combinedFragmentView.getPosition(TransformSpace.GLOBAL);
position.setX(minX);
combinedFragmentView.setPositionGlobal(position);
combinedFragmentView.setMinimumWidth(maxX - minX);
}
}
/**
* Layouts all fragments along this view. Can be called recursively for different fragment
* containers.
*
* @param container the {@link FragmentContainer} for which fragments should be layouted
* @param nextfragmentY the y-position for the next fragment
* @return the y-position for the next fragment
*/
private float layoutFragments(FragmentContainer container, float nextfragmentY) {
float previousFragmentY = nextfragmentY;
float currentFragmentY = nextfragmentY;
boolean receiveEventNext = false;
// Make sure that all messages are updated, since this might be necessary due to moving the
// lifelines around.
for (InteractionFragment fragment : container.getFragments()) {
int index = fragment.getContainer().getFragments().indexOf(fragment);
for (Lifeline lifeline : fragment.getCovered()) {
LifelineView lifelineView = lifelines.get(lifeline);
// In case of a create message the lifeline has to be moved down depending on the name
// height.
if (fragment instanceof MessageOccurrenceSpecification) {
MessageOccurrenceSpecification messageEnd = (MessageOccurrenceSpecification) fragment;
// If the message was removed, but the message ends are still there,
// ignore them.
if (!messages.containsKey(messageEnd.getMessage())) {
continue;
}
if (messageEnd.getMessage().getMessageSort() == MessageSort.CREATE_MESSAGE
&& messageEnd.getMessage().getReceiveEvent() == messageEnd) {
float lifelineNameHeight = lifelineView.getNameHeight();
float difference = lifelineNameHeight - BOX_HEIGHT;
float lifelineY = currentFragmentY - (difference / 2f);
/** Convert global position to relative one. */
lifelineY =
getGlobalVecToParentRelativeSpace(lifelineView, new Vector3D(0, lifelineY)).y;
lifelineView.getLayoutElement().setY(lifelineY);
currentFragmentY += lifelineNameHeight;
receiveEventNext = false;
continue;
}
}
RamRectangleComponent fragmentView = lifelineView.getFragmentView(fragment, index);
// view is null when message was just removed
if (fragmentView != null) {
RamRectangleComponent spacer = lifelineView.getSpacerForFragmentAt(fragment, index);
// Start with the position of the first spacer.
if (currentFragmentY == LIFELINE_Y) {
currentFragmentY = spacer.getPosition(TransformSpace.GLOBAL).getY();
}
if (!receiveEventNext) {
currentFragmentY += BOX_HEIGHT;
}
Vector3D currentPosition = fragmentView.getPosition(TransformSpace.GLOBAL);
if (currentPosition.getY() != currentFragmentY) {
float difference = currentFragmentY - currentPosition.getY();
float height = spacer.getHeight() + difference;
// Fix the height to not go below the minimum size.
if (height < BOX_HEIGHT) {
height = BOX_HEIGHT;
}
spacer.setMinimumHeight(height);
// Need to inform parent manually.
spacer.updateParent();
}
if (fragment instanceof MessageOccurrenceSpecification) {
MessageOccurrenceSpecification messageEnd = (MessageOccurrenceSpecification) fragment;
Message message = messageEnd.getMessage();
/**
* Prevent moving downwards if the next event will be a receive event. However, if it is
* a self message we need to move downwards. If it is the send event of a reply that
* ends in a gate, there will be no next event.
*/
if (!message.isSelfMessage()
&& message.getSendEvent() == messageEnd
&& message.getReceiveEvent().eClass() != RamPackage.Literals.GATE) {
receiveEventNext = true;
} else {
receiveEventNext = false;
}
}
if (fragment instanceof CombinedFragment) {
CombinedFragment combinedFragment = (CombinedFragment) fragment;
CombinedFragmentView combinedFragmentView = combinedFragments.get(combinedFragment);
if (combinedFragment.getCovered().indexOf(lifeline) == 0) {
Vector3D position = combinedFragmentView.getPosition(TransformSpace.GLOBAL);
position.setY(currentFragmentY);
combinedFragmentView.setPositionGlobal(position);
receiveEventNext = true;
}
// Only increase y if it is the last lifeline.
int lastIndex = combinedFragment.getCovered().size() - 1;
if (combinedFragment.getCovered().indexOf(lifeline) == lastIndex) {
for (InteractionOperand operand : combinedFragment.getOperands()) {
float operandHeight = combinedFragmentView.getOperandMinimumHeight(operand);
if (operand.getFragments().size() > 0) {
operandHeight += layoutFragments(operand, currentFragmentY + operandHeight);
}
// Add an additional space due to the additional spacer in the operand.
// This also supports empty operands.
operandHeight += BOX_HEIGHT;
combinedFragmentView.setOperandHeight(operand, operandHeight);
currentFragmentY += operandHeight;
}
combinedFragmentView.updateLayout();
receiveEventNext = false;
}
} else if (!receiveEventNext) {
currentFragmentY += fragmentView.getHeight();
}
}
}
}
return currentFragmentY - previousFragmentY;
}
/**
* Adds a new view for the given message to this view. A message is represented by a view on each
* end and a view representing the actual call. The end views are added to the corresponding
* lifelines. In case an end is a gate and not placed on a lifeline, a {@link GateView} is used
* instead and added to this view at the left side.
*
* @param message the {@link Message} to add
*/
private void addMessageView(Message message) {
LifelineView toView = null;
LifelineView fromView = null;
RamRectangleComponent sendEventView = null;
RamRectangleComponent receiveEventView = null;
MessageEnd sendEvent = message.getSendEvent();
MessageEnd receiveEvent = message.getReceiveEvent();
Operation signature = message.getSignature();
boolean messageViewDefined = false;
if (signature != null && specifies != signature) {
Aspect aspect = EMFModelUtil.getRootContainerOfType(signature, RamPackage.Literals.ASPECT);
/**
* Make sure that the signature still exists in the aspect. It could have been deleted and
* would then cause problems here.
*/
if (aspect != null) {
messageViewDefined = RAMModelUtil.isMessageViewDefined(aspect, signature);
}
}
if (sendEvent instanceof MessageOccurrenceSpecification) {
MessageOccurrenceSpecification event = (MessageOccurrenceSpecification) sendEvent;
fromView = lifelines.get(event.getCovered().get(0));
int modelIndex = event.getContainer().getFragments().indexOf(sendEvent);
if (fromView != null) {
boolean allowMessageCreation = false;
// Allow creation after sending a message where no return is expected.
if (signature != null && signature.getReturnType() != null) {
Type returnType = signature.getReturnType();
allowMessageCreation =
message.getMessageSort() != MessageSort.REPLY
&& !message.isSelfMessage()
&& (returnType.eClass() == RamPackage.Literals.RVOID
|| message.getMessageSort() == MessageSort.CREATE_MESSAGE
|| signature.eContainer() instanceof ImplementationClass
// When a message view is defined, there will be no reply, so we need to allow
// it.
|| messageViewDefined);
}
sendEventView = fromView.addMessageEnd(event, modelIndex, allowMessageCreation);
}
}
if (receiveEvent instanceof MessageOccurrenceSpecification) {
MessageOccurrenceSpecification event = (MessageOccurrenceSpecification) receiveEvent;
toView = lifelines.get(event.getCovered().get(0));
int modelIndex = event.getContainer().getFragments().indexOf(receiveEvent);
if (toView != null) {
if (message.getMessageSort() == MessageSort.CREATE_MESSAGE) {
receiveEventView = toView;
} else {
boolean allowMessageCreation = message.getMessageSort() != MessageSort.DELETE_MESSAGE;
if (signature != null) {
// Don't allow message creation if the receiving end is on an implementation class.
// If it is a self message it cannot be on an implementation class and is allowed.
allowMessageCreation =
allowMessageCreation
&& !(signature.eContainer() instanceof ImplementationClass)
&& (!messageViewDefined || message.isSelfMessage());
}
receiveEventView = toView.addMessageEnd(event, modelIndex, allowMessageCreation);
}
}
}
if (sendEventView == null) {
Vector3D oppositePosition = receiveEventView.getPosition(TransformSpace.GLOBAL);
sendEventView = new GateView(0, oppositePosition.getY(), BOX_WIDTH, BOX_HEIGHT);
addChild(sendEventView);
} else if (receiveEventView == null) {
Vector3D oppositePosition = sendEventView.getPosition(TransformSpace.GLOBAL);
receiveEventView = new GateView(0, oppositePosition.getY(), BOX_WIDTH, BOX_HEIGHT);
addChild(receiveEventView);
}
MessageCallView messageCallView = new MessageCallView(message, sendEventView, receiveEventView);
addChild(messageCallView);
messageCallView.setHandler(HandlerFactoryMessageView.INSTANCE.getMessageHandler());
messages.put(message, messageCallView);
layoutMessageView();
messageCallView.updateLines();
}