package cz.cuni.amis.pogamut.shady;
   
   import cz.cuni.amis.pogamut.sposh.exceptions.MissingRootException;
   import java.util.Collections;
   import java.util.List;
   
   /**
    * This class contains all nodes of one shade plan.
    * @author Honza
   */
  public class ShadeTree {
      public final static String ROOT = "root";
      private final List<ShadeNode> nodesUm;
  
      /**
       * Create new tree containing all nodes.
       * @param nodes
       */
      ShadeTree(List<ShadeNode> nodes) {
          this.nodesUm = Collections.unmodifiableList(nodes);
      }
  
      /**
       * Find root of the plan.
       * @return the root. If no root is found, throw {@link MissingRootException}
       */
      public ShadeNode getRoot() {
          for (ShadeNode node : nodesUm)
              if (ROOT.equals(node.getName()))
                  return node;
          throw new MissingRootException(ROOT);
      }
  
      /**
       * Find the node of this plan with specified name and return it.
       * @param name name of the node we are looking for.
       * @return found node or null if no such node exists.
       */
      public ShadeNode findNode(String name) {
          throw new UnsupportedOperationException("Not yet implemented");
      }
  }