1 package net.systemeD.halcyon.connection {
3 import net.systemeD.halcyon.connection.actions.*;
5 public class Relation extends Entity {
6 private var members:Array;
7 public static var entity_type:String = 'relation';
9 public function Relation(id:Number, version:uint, tags:Object, loaded:Boolean, members:Array) {
10 super(id, version, tags, loaded);
11 this.members = members;
12 for each (var member:RelationMember in members)
13 member.entity.addParent(this);
16 public function update(version:uint, tags:Object, loaded:Boolean, members:Array):void {
17 var member:RelationMember;
18 for each (member in this.members)
19 member.entity.removeParent(this);
21 updateEntityProperties(version,tags,loaded);
23 for each (member in members)
24 member.entity.addParent(this);
27 public function get length():uint {
28 return members.length;
31 public function findEntityMemberIndex(entity:Entity):int {
32 for (var index:uint = 0; index < members.length; index++) {
33 var member:RelationMember = members[index];
34 if ( member.entity == entity )
40 public function findEntityMemberIndexes(entity:Entity):Array {
41 var indexes:Array = [];
42 for (var index:uint = 0; index < members.length; index++) {
43 var member:RelationMember = members[index];
44 if ( member.entity == entity )
50 public function getMember(index:uint):RelationMember {
51 return members[index];
54 public function setMember(index:uint, member:RelationMember):void {
55 var oldMember:RelationMember = getMember(index);
57 members.splice(index, 1, member);
58 oldMember.entity.removeParent(this);
59 member.entity.addParent(this);
63 public function insertMember(index:uint, member:RelationMember, performAction:Function):void {
64 performAction(new AddMemberToRelationAction(this, index, member, members));
67 public function appendMember(member:RelationMember):uint {
69 member.entity.addParent(this);
72 dispatchEvent(new RelationMemberEvent(Connection.RELATION_MEMBER_ADDED, member.entity, this, members.length-1));
73 return members.length;
76 public function removeMember(entity:Entity, performAction:Function):void {
77 performAction(new RemoveEntityFromRelationAction(this, entity, members));
80 public function removeMemberByIndex(index:uint):void {
81 var removed:Array=members.splice(index, 1);
82 var entity:Entity=removed[0].entity;
84 // only remove as parent if this was only reference
85 if (findEntityMemberIndex(entity)==-1)
86 entity.removeParent(this);
89 dispatchEvent(new RelationMemberEvent(Connection.RELATION_MEMBER_REMOVED, entity, this, index));
92 public override function remove(performAction:Function):void {
93 performAction(new DeleteRelationAction(this, setDeletedState, members));
96 internal override function isEmpty():Boolean {
97 return (deleted || (members.length==0));
100 public function getDescription():String {
101 var desc:String = "";
102 var relTags:Object = getTagsHash();
103 if ( relTags["type"] ) {
104 desc = relTags["type"];
106 desc += " " + relTags[desc];
108 if ( relTags["ref"] )
109 desc += " " + relTags["ref"];
110 if ( relTags["name"] )
111 desc += " " + relTags["name"];
115 public override function getType():String {
119 public override function toString():String {
120 return "Relation("+id+"@"+version+"): "+members.length+" members "+getTagList();