Mercurial > dive4elements > river
comparison gwt-client/src/main/java/org/dive4elements/river/client/shared/model/DataCageTree.java @ 9520:b188255f08b3
Allow to filter datacage entries by module-roles of current user.
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| author | gernotbelger |
|---|---|
| date | Mon, 01 Oct 2018 16:21:20 +0200 |
| parents | 4b29bb2c785f |
| children |
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| 9519:ec2ebbc49fbc | 9520:b188255f08b3 |
|---|---|
| 7 */ | 7 */ |
| 8 | 8 |
| 9 package org.dive4elements.river.client.shared.model; | 9 package org.dive4elements.river.client.shared.model; |
| 10 | 10 |
| 11 import java.io.Serializable; | 11 import java.io.Serializable; |
| 12 import java.util.List; | |
| 13 | 12 |
| 14 public class DataCageTree implements Serializable | 13 public class DataCageTree implements Serializable { |
| 15 { | 14 |
| 15 private static final long serialVersionUID = 1L; | |
| 16 | 16 |
| 17 public interface Visitor { | 17 public interface Visitor { |
| 18 boolean accept(DataCageNode node); | 18 boolean accept(DataCageNode node); |
| 19 } // interface | 19 } |
| 20 | 20 |
| 21 protected DataCageNode root; | 21 private DataCageNode root; |
| 22 | 22 |
| 23 public DataCageTree() { | 23 public DataCageTree() { |
| 24 } | 24 } |
| 25 | 25 |
| 26 public DataCageTree(DataCageNode root) { | 26 public DataCageTree(final DataCageNode root) { |
| 27 this.root = root; | 27 this.root = root; |
| 28 } | 28 } |
| 29 | 29 |
| 30 public void setRoot(DataCageNode root) { | 30 public void setRoot(final DataCageNode root) { |
| 31 this.root = root; | 31 this.root = root; |
| 32 } | 32 } |
| 33 | 33 |
| 34 public DataCageNode getRoot() { | 34 public DataCageNode getRoot() { |
| 35 return root; | 35 return this.root; |
| 36 } | |
| 37 | |
| 38 | |
| 39 protected boolean recursivePrune(DataCageNode node, Visitor visitor) { | |
| 40 if (!node.hasChildren()) { | |
| 41 return visitor.accept(node); | |
| 42 } | |
| 43 | |
| 44 List<DataCageNode> children = node.getChildren(); | |
| 45 | |
| 46 for (int i = children.size()-1; i >= 0; --i) { | |
| 47 if (!recursivePrune(children.get(i), visitor)) { | |
| 48 children.remove(i); | |
| 49 } | |
| 50 } | |
| 51 | |
| 52 return !children.isEmpty(); | |
| 53 } | |
| 54 | |
| 55 public boolean prune(Visitor visitor) { | |
| 56 return root == null || !root.hasChildren() | |
| 57 ? true | |
| 58 : recursivePrune(root, visitor); | |
| 59 } | 36 } |
| 60 } | 37 } |
| 61 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |