@Override
public void handleEvent(Event event) {
// no need to do anything if we have no listeners
if (!listeners.isEmpty()) {
Object oldSelected = event.getProperty(UIEvents.EventTags.OLD_VALUE);
if (oldSelected instanceof MPlaceholder) {
oldSelected = ((MPlaceholder) oldSelected).getRef();
}
MPlaceholder placeholder = null;
Object selected = event.getProperty(UIEvents.EventTags.NEW_VALUE);
if (selected instanceof MPlaceholder) {
placeholder = (MPlaceholder) selected;
selected = placeholder.getRef();
}
MPart oldSelectedPart = oldSelected instanceof MPart ? (MPart) oldSelected : null;
MPart selectedPart = selected instanceof MPart ? (MPart) selected : null;
if (oldSelectedPart != null && getParts().contains(selectedPart)) {
firePartHidden(oldSelectedPart);
}
if (selectedPart != null
&& selectedPart.isToBeRendered()
&& getParts().contains(selectedPart)) {
// ask the renderer to create this part
if (placeholder == null) {
if (selectedPart.getParent().getRenderer() != null) {
engine.createGui(selectedPart);
firePartVisible(selectedPart);
firePartBroughtToTop(selectedPart);
}
} else if (placeholder.getParent().getRenderer() != null) {
engine.createGui(placeholder);
firePartVisible(selectedPart);
firePartBroughtToTop(selectedPart);
}
}
}
}
public static void addPartToAppropriateContainer(
MPart part, MPartDescriptor descriptor, MApplication application, EModelService service) {
// first try and find the container specified by the id in the "parent" persisted state
MElementContainer<MUIElement> container = null;
String parentId = descriptor.getPersistedState().get(PARENT_ID);
if (parentId != null) {
@SuppressWarnings("rawtypes")
List<MElementContainer> containers =
service.findElements(application, parentId, MElementContainer.class, null);
if (!containers.isEmpty()) {
@SuppressWarnings("unchecked")
MElementContainer<MUIElement> uncheckedContainer = containers.get(0);
container = uncheckedContainer;
}
}
// next try and find a sibling, and use the sibling's container
if (container == null) {
List<MPart> siblings =
service.findElements(application, descriptor.getElementId(), MPart.class, null);
for (MPart sibling : siblings) {
if (sibling == part) {
continue;
}
container = sibling.getParent();
if (sibling.isToBeRendered()) {
// prefer visible siblings
break;
}
}
}
if (container != null) {
String position = descriptor.getPersistedState().get(POSITION_ID);
int index = getPositionIndex(position, container);
if (index < 0 || index > container.getChildren().size()) {
container.getChildren().add(part);
} else {
container.getChildren().add(index, part);
}
}
}
@Override
public boolean isPartOrPlaceholderInPerspective(String elementId, MPerspective perspective) {
List<MPart> findElements = modelService.findElements(perspective, elementId, MPart.class, null);
if (!findElements.isEmpty()) {
MPart part = findElements.get(0);
// if that is a shared part, check the placeholders
if (workbenchWindow.getSharedElements().contains(part)) {
List<MPlaceholder> placeholders =
modelService.findElements(perspective, elementId, MPlaceholder.class, null);
for (MPlaceholder mPlaceholder : placeholders) {
if (mPlaceholder.isVisible() && mPlaceholder.isToBeRendered()) {
return true;
}
}
return false;
}
// not a shared part
return part.isVisible() && part.isToBeRendered();
}
return false;
}