CellAction_DeleteEasily.java

package jetbrains.mps.editor.runtime.impl.cellActions;

/*Generated by MPS */

import jetbrains.mps.nodeEditor.cellActions.CellAction_DeleteNode;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.openapi.editor.EditorContext;
import jetbrains.mps.internal.collections.runtime.ListSequence;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.SNodeOperations;
import jetbrains.mps.internal.collections.runtime.IWhereFilter;
import jetbrains.mps.lang.smodel.generator.smodelAdapter.AttributeOperations;
import org.jetbrains.mps.openapi.language.SContainmentLink;

public class CellAction_DeleteEasily extends CellAction_DeleteNode {
  public CellAction_DeleteEasily(SNode semanticNode) {
    super(semanticNode);
  }
  public CellAction_DeleteEasily(SNode semanticNode, CellAction_DeleteNode.DeleteDirection direction) {
    super(semanticNode, direction);
  }
  @Override
  public boolean canExecute(EditorContext context) {
    return super.canExecute(context) && canBeDeletedEasily();
  }
  private boolean canBeDeletedEasily() {
    SNode semanticNode = getSourceNode();
    for (SNode child : ListSequence.fromList(SNodeOperations.getChildren(semanticNode)).where(new IWhereFilter<SNode>() {
      public boolean accept(SNode it) {
        return !(AttributeOperations.isAttribute(it));
      }
    })) {
      SContainmentLink l = SNodeOperations.getContainingLink(child);
      if (l.isValid() && (l.isMultiple() || l.isOptional())) {
        return false;
      }
    }
    return true;
  }
}