/*
* Copyright 2003-2015 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.tempmodel;
import jetbrains.mps.smodel.EditableModelDescriptor;
import jetbrains.mps.smodel.ModelLoadResult;
import jetbrains.mps.smodel.RegularModelDescriptor;
import jetbrains.mps.smodel.SModelId;
import jetbrains.mps.smodel.SNodeUndoableAction;
import jetbrains.mps.smodel.loading.ModelLoadingState;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.model.EditableSModel;
import org.jetbrains.mps.openapi.model.SModelChangeListener;
import org.jetbrains.mps.openapi.model.SModelReference;
import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.mps.openapi.model.SNodeChangeListener;
import org.jetbrains.mps.openapi.module.SModuleReference;
import org.jetbrains.mps.openapi.persistence.NullDataSource;
import org.jetbrains.mps.openapi.persistence.PersistenceFacade;
class TempModel extends EditableModelDescriptor implements EditableSModel {
private final boolean myReadOnly;
private final boolean myTrackUndo;
protected TempModel(boolean readOnly, boolean trackUndo, SModuleReference moduleReference) {
super(createModelRef("TempModel_" + System.nanoTime(), moduleReference), new NullDataSource());
myReadOnly = readOnly;
myTrackUndo = trackUndo;
}
@Override
public void updateTimestamp() {
// no-op
}
@Override
public boolean needsReloading() {
return false;
}
@NotNull
@Override
protected ModelLoadResult<jetbrains.mps.smodel.SModel> createModel() {
jetbrains.mps.smodel.SModel smodel = new jetbrains.mps.smodel.SModel(getReference()) {
@Override
protected void performUndoableAction(@NotNull SNodeUndoableAction action) {
if (myTrackUndo) {
super.performUndoableAction(action);
}
}
};
return new ModelLoadResult<jetbrains.mps.smodel.SModel>(smodel, ModelLoadingState.FULLY_LOADED);
}
@Override
public boolean isChanged() {
// TODO move TempModels outside of the default repository; false here prevents model from saving
// FIXME save() is no-op here now, do we still need isChanged() == false?
return false;
}
@Override
public void save() {
// no-op, this is in-memory model
}
@Override
public void rename(String newModelName, boolean changeFile) {
throw new UnsupportedOperationException();
}
@Override
public boolean isReadOnly() {
return myReadOnly;
}
@Override
public void reloadFromSource() {
throw new UnsupportedOperationException();
}
private static SModelReference createModelRef(String modelName, SModuleReference moduleReference) {
// todo: make TempModel name customizable? like prefix for temporary file
SModelId id = SModelId.generate();
return PersistenceFacade.getInstance().createModelReference(moduleReference, id, modelName);
}
}