code: /*--------------------------------------------------------------*
    Copyright (C) 2006-2020 OpenSim Ltd.
  
    This file is distributed WITHOUT ANY WARRANTY. See the file
    'License' for details on this and other legal matters.
  *--------------------------------------------------------------*/
  
  package org.omnetpp.scave.model.commands;
  
  import java.util.Arrays;
  import java.util.Collection;
  
  import org.eclipse.core.runtime.Assert;
  import org.omnetpp.scave.model.AnalysisItem;
  import org.omnetpp.scave.model.Folder;
  import org.omnetpp.scave.model.ModelObject;
  
  public class RemoveChartCommand implements ICommand {
      private int index;
      private Folder container;
      private AnalysisItem item;
  
      public RemoveChartCommand(AnalysisItem item) {
          this.item = item;
          this.container = item.getParentFolder();
          Assert.isNotNull(this.container, "root folder cannot be removed (or: item is not in a folder)");
      }
  
      @Override
      public void execute() {
          container = item.getParentFolder();
          index = container.getItems().indexOf(item);
          container.remove(item);
      }
  
      @Override
      public void undo() {
          container.add(item, index);
      }
  
      @Override
      public void redo() {
          execute();
      }
  
      @Override
      public String getLabel() {
          return "Remove chart";
      }
  
      @Override
      public Collection<ModelObject> getAffectedObjects() {
          return Arrays.asList(container, item);
      }
  
  }
  