Mercurial > dive4elements > river
comparison gwt-client/src/main/java/org/dive4elements/river/client/shared/model/DataCageTree.java @ 7465:4b29bb2c785f
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 |
comparison
equal
deleted
inserted
replaced
| 7464:f16dce7a2407 | 7465:4b29bb2c785f |
|---|---|
| 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; | |
| 12 | 13 |
| 13 public class DataCageTree implements Serializable | 14 public class DataCageTree implements Serializable |
| 14 { | 15 { |
| 16 | |
| 17 public interface Visitor { | |
| 18 boolean accept(DataCageNode node); | |
| 19 } // interface | |
| 20 | |
| 15 protected DataCageNode root; | 21 protected DataCageNode root; |
| 16 | 22 |
| 17 public DataCageTree() { | 23 public DataCageTree() { |
| 18 } | 24 } |
| 19 | 25 |
| 26 } | 32 } |
| 27 | 33 |
| 28 public DataCageNode getRoot() { | 34 public DataCageNode getRoot() { |
| 29 return root; | 35 return root; |
| 30 } | 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 } | |
| 31 } | 60 } |
| 32 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | 61 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |