/*
* 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.smodel;
import jetbrains.mps.extapi.model.SModelBase;
import jetbrains.mps.smodel.loading.ModelLoadingState;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.persistence.NullDataSource;
/**
* Model openapi.SModel implementation to parasitize on (utilize) existing SModelBase and smodel.SModel classes.
* It takes existing SModelData and provides it to outer world through openapi.SModel.
* Perhaps, parts of SModelBase could move to SModelDescriptorStub, and this class could use SModelDescriptorStub then.
*
* FIXME move to [smodel] once SModelBase cease to depend on [kernel] stuff
* FIXME why doesn't it support add/remove root operations? Was it intentional, or just overlook?
* @author Artem Tikhomirov
*/
public class TrivialModelDescriptor extends SModelBase {
private SModel myModelData;
/**
* @param modelData actual model data represented with this descriptor. Note, data's modelDescriptor is set to <code>this</code>
*/
public TrivialModelDescriptor(@NotNull SModel modelData) {
super(modelData.getReference(), new NullDataSource());
myModelData = modelData;
modelData.setModelDescriptor(this);
setLoadingState(ModelLoadingState.FULLY_LOADED);
}
@Override
public SModel getSModelInternal() {
return getCurrentModelInternal();
}
@Nullable
@Override
protected SModel getCurrentModelInternal() {
return myModelData;
}
@Override
protected void doUnload() {
super.doUnload();
myModelData = null;
}
}