AddRootChange.java

package jetbrains.mps.vcs.diff.changes;

/*Generated by MPS */

import org.jetbrains.mps.openapi.model.SNodeId;
import org.jetbrains.annotations.NotNull;
import jetbrains.mps.vcs.diff.ChangeSet;
import org.jetbrains.mps.openapi.model.SModel;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SModelOperations;

public class AddRootChange extends ModelChange {
  private SNodeId myNodeId;
  public AddRootChange(@NotNull ChangeSet changeSet, @NotNull SNodeId nodeId) {
    super(changeSet);
    myNodeId = nodeId;
  }
  @NotNull
  @Override
  public SNodeId getRootId() {
    return myNodeId;
  }
  @Override
  public void apply(@NotNull SModel model, @NotNull NodeCopier nodeCopier) {
    SNode newNode = getChangeSet().getNewModel().getNode(myNodeId);
    SModelOperations.addRootNode(model, nodeCopier.copyNode(newNode));
  }
  @NotNull
  @Override
  protected ModelChange createOppositeChange() {
    return new DeleteRootChange(getChangeSet().getOppositeChangeSet(), myNodeId);
  }
  @NotNull
  @Override
  public ChangeType getType() {
    return ChangeType.ADD;
  }
  @Override
  public String toString() {
    return "Add root " + myNodeId;
  }
  @Override
  public String getDescription() {
    return "Added root #" + myNodeId;
  }
}