@Override
public MPartDescriptor getPartDescriptor(String id) {
MApplication application = appContext.get(MApplication.class);
// If the id contains a ':' use the part before it as the descriptor id
int colonIndex = id == null ? -1 : id.indexOf(':');
String descId = colonIndex == -1 ? id : id.substring(0, colonIndex);
for (MPartDescriptor descriptor : application.getDescriptors()) {
if (descriptor.getElementId().equals(descId)) {
return descriptor;
}
}
return null;
}
public static void createParts(
MApplication application, EModelService service, EPartService partService) {
// Sometimes, when switching windows at startup, the active context
// is null or doesn't have a window, and the part instantiation fails.
// Ensure that a child context with a window is activated:
IEclipseContext activeChild = application.getContext().getActiveChild();
if (activeChild == null || activeChild.get(MTrimmedWindow.class) == null) {
boolean activated = false;
if (application.getContext() instanceof EclipseContext) {
for (IEclipseContext child : ((EclipseContext) application.getContext()).getChildren()) {
MTrimmedWindow window = child.get(MTrimmedWindow.class);
if (window != null) {
child.activate();
activated = true;
break;
}
}
}
if (!activated) {
logger.error("Could not activate window for part instantiation"); // $NON-NLS-1$
return;
}
}
List<MPart> ontops = new ArrayList<MPart>();
for (MPartDescriptor descriptor : application.getDescriptors()) {
if (!(descriptor.getPersistedState().containsKey(VISIBLE_ID)
&& Boolean.toString(true)
.equalsIgnoreCase(descriptor.getPersistedState().get(VISIBLE_ID)))) {
continue;
}
List<MPart> existingParts =
service.findElements(application, descriptor.getElementId(), MPart.class, null);
if (!existingParts.isEmpty()) {
// part is already instantiated
continue;
}
MPart part = partService.createPart(descriptor.getElementId());
if (part == null) {
continue;
}
addPartToAppropriateContainer(part, descriptor, application, service);
partService.activate(part);
if (descriptor.getPersistedState().containsKey(ONTOP_ID)
&& Boolean.toString(true)
.equalsIgnoreCase(descriptor.getPersistedState().get(ONTOP_ID))) {
ontops.add(part);
}
}
// reactivate ontop parts to ensure they are on-top
for (MPart ontop : ontops) {
partService.activate(ontop);
}
}
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);
}
}
}
/**
* Adds a part to the current container if it isn't already in the container. The part may still
* be added to the container if the part supports having multiple copies of itself in a given
* container.
*
* @param providedPart the part to add
* @param localPart a part that shares attributes with <code>providedPart</code>, for example, it
* may have been backed by the same part descriptor, this part may already be in the current
* container
* @return a part that has been added to the current container, note that this may not necessarily
* be <code>providedPart</code>
* @see MPartDescriptor#isAllowMultiple()
*/
private MPart addPart(MPart providedPart, MPart localPart) {
MPartDescriptor descriptor = modelService.getPartDescriptor(providedPart.getElementId());
if (descriptor == null) {
// there is no part descriptor backing the provided part, just add it to the container
// if it's not already there
if (!isInContainer(providedPart)) {
adjustPlaceholder(providedPart);
addToLastContainer(null, providedPart);
}
} else {
if (providedPart != localPart && !descriptor.isAllowMultiple()) {
// multiple copies of this part are not allowed, just return the local one
return localPart;
}
// already in the container, return as is
if (isInContainer(providedPart)) {
return providedPart;
}
// corrects this part's placeholder if necessary
adjustPlaceholder(providedPart);
String category = descriptor.getCategory();
if (category == null) {
// no category, just add it to the end
addToLastContainer(null, providedPart);
} else {
if ("org.eclipse.e4.primaryDataStack".equals(category)) { // $NON-NLS-1$
MElementContainer<? extends MUIElement> container = getContainer();
MUIElement area = modelService.find("org.eclipse.ui.editorss", container); // $NON-NLS-1$
MPartStack activeStack = null;
if (area instanceof MPlaceholder && ((MPlaceholder) area).getRef() instanceof MArea) {
// Find the currently 'active' stack in the area
MArea a = (MArea) ((MPlaceholder) area).getRef();
MUIElement curActive = a.getSelectedElement();
while (curActive instanceof MElementContainer<?>) {
if (curActive instanceof MPartStack) {
activeStack = (MPartStack) curActive;
break;
}
MElementContainer<?> curContainer = (MElementContainer<?>) curActive;
curActive = curContainer.getSelectedElement();
}
}
if (activeStack != null) {
activeStack.getChildren().add(providedPart);
} else {
// Find the first visible stack in the area
List<MPartStack> sharedStacks =
modelService.findElements(area, null, MPartStack.class, null);
if (sharedStacks.size() > 0) {
for (MPartStack stack : sharedStacks) {
if (stack.isToBeRendered()) {
stack.getChildren().add(providedPart);
break;
}
}
} else {
addToLastContainer(null, providedPart);
}
}
} else {
@SuppressWarnings("rawtypes")
List<MElementContainer> containers =
modelService.findElements(
getContainer(),
null,
MElementContainer.class,
Collections.singletonList(category),
EModelService.PRESENTATION);
if (containers.isEmpty()) {
// couldn't find any containers with the specified tag, just add it to the
// end
addToLastContainer(category, providedPart);
} else {
// add the part to the container
MElementContainer<MPartSashContainerElement> container = containers.get(0);
MPlaceholder placeholder = providedPart.getCurSharedRef();
if (placeholder == null) {
container.getChildren().add(providedPart);
} else {
container.getChildren().add(placeholder);
}
}
}
}
}
return providedPart;
}
private MPart createPart(MPartDescriptor descriptor) {
if (descriptor == null) {
return null;
}
MPart part = modelService.createModelElement(MPart.class);
part.setElementId(descriptor.getElementId());
part.getMenus().addAll(EcoreUtil.copyAll(descriptor.getMenus()));
if (descriptor.getToolbar() != null) {
part.setToolbar((MToolBar) EcoreUtil.copy((EObject) descriptor.getToolbar()));
}
part.setContributorURI(descriptor.getContributorURI());
part.setCloseable(descriptor.isCloseable());
part.setContributionURI(descriptor.getContributionURI());
part.setLabel(descriptor.getLabel());
part.setIconURI(descriptor.getIconURI());
part.setTooltip(descriptor.getTooltip());
part.getHandlers().addAll(EcoreUtil.copyAll(descriptor.getHandlers()));
part.getTags().addAll(descriptor.getTags());
part.getPersistedState().putAll(descriptor.getPersistedState());
part.getBindingContexts().addAll(descriptor.getBindingContexts());
return part;
}
protected void doOkPressed(MPartDescriptor[] selection) {
for (MPartDescriptor d : selection) {
PartUtils.openPart(d.getElementId(), true);
}
}
