/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.project;
import jetbrains.mps.extapi.module.SRepositoryBase;
import jetbrains.mps.extapi.module.SRepositoryExt;
import jetbrains.mps.smodel.MPSModuleOwner;
import jetbrains.mps.smodel.MPSModuleRepository;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.module.ModelAccess;
import org.jetbrains.mps.openapi.module.RepositoryAccess;
import org.jetbrains.mps.openapi.module.SModule;
import org.jetbrains.mps.openapi.module.SModuleId;
import org.jetbrains.mps.openapi.module.SRepositoryListener;
/**
* Repository with modules visible in MPS {@link Project project}.
*
* IMPORTANT!
* For the time being, all modules available in this MPS instance are exposed through this repository, although
* as we move forward with multiple projects story, this convention shall change. Likely, we'll expose modules of
* the project and all its imports/libraries (and won't expose modules of other opened projects), though this is not
* yet final.
*
* Currently delegates almost everything to the ugly singleton {@link MPSModuleRepository}. Keeps own list of
* listeners and sends out own notifications about modules added/removed
* (i.e. module added to the global repository triggers moduleAdded for for both global and
* each project repository
*/
public class ProjectRepository extends SRepositoryBase implements SRepositoryExt {
private final Project myProject;
private final ProjectModelAccess myProjectModelAccess;
public ProjectRepository(@NotNull Project project) {
myProject = project;
myProjectModelAccess = new ProjectModelAccess(project);
}
@Override
public void dispose() {
super.dispose();
}
@NotNull
private MPSModuleRepository getRootRepository() {
return MPSModuleRepository.getInstance();
}
public Project getProject() {
return myProject;
}
@Override
public SModule getModule(@NotNull SModuleId ref) {
return getRootRepository().getModule(ref);
}
@NotNull
@Override
public Iterable<SModule> getModules() {
return getRootRepository().getModules();
}
@NotNull
@Override
public ModelAccess getModelAccess() {
return myProjectModelAccess;
}
@Override
public RepositoryAccess getRepositoryAccess() {
throw new UnsupportedOperationException();
}
@Override
public void saveAll() {
getRootRepository().saveAll();
}
@Override
public <T extends SModule> T registerModule(@NotNull T module, @NotNull MPSModuleOwner owner) {
return getRootRepository().registerModule(module, owner);
}
@Override
public void unregisterModule(@NotNull SModule module, @NotNull MPSModuleOwner owner) {
getRootRepository().unregisterModule(module, owner);
}
@Override
public void addRepositoryListener(@NotNull SRepositoryListener listener) {
/*
* Provisional code to deal with transition scenario, when project repository mimics global MPSModuleRepository.
* Al long as modules are manipulated through the global repository, it's the one to send out notifications about modules added/removed.
* However, we strive to attach repo listeners to a proper repository. Thus, we forward attach/detach to the repository where events originate from.
*
* We could have had done this with re-dispatch mechanism (keep listeners of each repo separately, attach dedicated root repo listener to re-dispatch
* add/remove events), but that leads to more complicated code. fire* methods are not overridden here as MPSModuleRepository is their only client, and it
* doesn't send these for anything but itself.
*
* We shall take extra care with global repository listeners, to ensure they are not registered twice when attaching to global+project repo (and not unregistered
* unexpectedly when detached from one of the repositories). Now we need to keep counter for repository listeners.
* Generally, we shall avoid global listeners.
*
* XXX once repositories are independent, remove this code and mark methods in super as 'final' back.
*/
getRootRepository().addRepositoryListener(listener);
}
@Override
public void removeRepositoryListener(@NotNull SRepositoryListener listener) {
getRootRepository().removeRepositoryListener(listener);
}
}