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annotate gwt-client/src/main/java/org/dive4elements/river/client/shared/model/DataCageTree.java @ 7465:4b29bb2c785f

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Datacage: Remove tree branches vom datacage tree on client side which do not contain loadable data.
author Sascha L. Teichmann <teichmann@intevation.de>
date Wed, 30 Oct 2013 11:58:57 +0100
parents ea9eef426962
children b188255f08b3
rev   line source
5861
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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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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parents: 5993
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16
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17 public interface Visitor {
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parents: 5993
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18 boolean accept(DataCageNode node);
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parents: 5993
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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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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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4b29bb2c785f Datacage: Remove tree branches vom datacage tree on client side which do not contain loadable data.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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39 protected boolean recursivePrune(DataCageNode node, Visitor visitor) {
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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40 if (!node.hasChildren()) {
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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41 return visitor.accept(node);
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parents: 5993
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42 }
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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44 List<DataCageNode> children = node.getChildren();
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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46 for (int i = children.size()-1; i >= 0; --i) {
4b29bb2c785f Datacage: Remove tree branches vom datacage tree on client side which do not contain loadable data.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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47 if (!recursivePrune(children.get(i), visitor)) {
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parents: 5993
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48 children.remove(i);
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49 }
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parents: 5993
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50 }
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parents: 5993
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parents: 5993
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52 return !children.isEmpty();
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parents: 5993
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53 }
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parents: 5993
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4b29bb2c785f Datacage: Remove tree branches vom datacage tree on client side which do not contain loadable data.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5993
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55 public boolean prune(Visitor visitor) {
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parents: 5993
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56 return root == null || !root.hasChildren()
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parents: 5993
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57 ? true
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58 : recursivePrune(root, visitor);
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parents: 5993
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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 :
http://dive4elements.wald.intevation.org