MoveNodesActionHelper.java

package jetbrains.mps.ide.platform.actions.core;

/*Generated by MPS */

import org.apache.log4j.Logger;
import org.apache.log4j.LogManager;
import jetbrains.mps.project.MPSProject;
import java.util.List;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.smodel.structure.ExtensionPoint;
import jetbrains.mps.internal.collections.runtime.Sequence;
import jetbrains.mps.internal.collections.runtime.IWhereFilter;
import org.apache.log4j.Level;
import jetbrains.mps.internal.collections.runtime.ISelector;
import jetbrains.mps.internal.collections.runtime.ILeftCombinator;

public class MoveNodesActionHelper {
  private static final Logger LOG = LogManager.getLogger(MoveNodesActionHelper.class);
  public static MoveNodesAction getRefactoring(final MPSProject project, final List<SNode> nodesToMove) {
    Iterable<MoveNodesAction> specialRefactorings = new ExtensionPoint<MoveNodesAction>("jetbrains.mps.ide.platform.MoveNodesActionEP").getObjects();
    Iterable<MoveNodesAction> applicableRefactorings = Sequence.fromIterable(specialRefactorings).where(new IWhereFilter<MoveNodesAction>() {
      public boolean accept(MoveNodesAction it) {
        return it.isApplicable(project, nodesToMove);
      }
    });
    if (Sequence.fromIterable(applicableRefactorings).isEmpty()) {
      return new MoveNodesActionBase();
    } else {
      if (Sequence.fromIterable(applicableRefactorings).count() > 1) {
        if (LOG.isEnabledFor(Level.ERROR)) {
          LOG.error("More than one MoveNodes refactoring applicable: " + Sequence.fromIterable(applicableRefactorings).select(new ISelector<MoveNodesAction, String>() {
            public String select(MoveNodesAction it) {
              return "\"" + it.getName() + "\"";
            }
          }).foldLeft("", new ILeftCombinator<String, String>() {
            public String combine(String s, String it) {
              return s + ", " + it;
            }
          }));
        }
      }
      return Sequence.fromIterable(applicableRefactorings).first();
    }
  }

}