Mercurial > dive4elements > river
annotate gwt-client/src/main/java/org/dive4elements/river/client/shared/model/DataCageTree.java @ 9237:972e10522ed6
salix.supraregional ui
author | gernotbelger |
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date | Tue, 10 Jul 2018 11:24:12 +0200 |
parents | 4b29bb2c785f |
children | b188255f08b3 |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.client.shared.model; |
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10 |
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11 import java.io.Serializable; |
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12 import java.util.List; |
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13 |
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14 public class DataCageTree implements Serializable |
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15 { |
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16 |
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17 public interface Visitor { |
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18 boolean accept(DataCageNode node); |
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19 } // interface |
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20 |
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21 protected DataCageNode root; |
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22 |
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23 public DataCageTree() { |
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24 } |
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25 |
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26 public DataCageTree(DataCageNode root) { |
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27 this.root = root; |
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28 } |
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29 |
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30 public void setRoot(DataCageNode root) { |
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31 this.root = root; |
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32 } |
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33 |
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34 public DataCageNode getRoot() { |
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35 return root; |
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36 } |
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37 |
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38 |
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39 protected boolean recursivePrune(DataCageNode node, Visitor visitor) { |
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40 if (!node.hasChildren()) { |
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41 return visitor.accept(node); |
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42 } |
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43 |
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44 List<DataCageNode> children = node.getChildren(); |
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45 |
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46 for (int i = children.size()-1; i >= 0; --i) { |
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47 if (!recursivePrune(children.get(i), visitor)) { |
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48 children.remove(i); |
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49 } |
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50 } |
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51 |
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52 return !children.isEmpty(); |
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53 } |
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54 |
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55 public boolean prune(Visitor visitor) { |
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56 return root == null || !root.hasChildren() |
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57 ? true |
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58 : recursivePrune(root, visitor); |
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59 } |
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60 } |
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61 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |