net/systemeD/halcyon/connection/Relation.as

   1 package net.systemeD.halcyon.connection {
   2
   3     public class Relation extends Entity {
   4         private var members:Array;
   5                 public static var entity_type:String = 'relation';
   6
   7         public function Relation(id:Number, version:uint, tags:Object, loaded:Boolean, members:Array) {
   8             super(id, version, tags, loaded);
   9             this.members = members;
  10                         for each (var member:RelationMember in members) { member.entity.addParent(this); }
  11         }
  12
  13         public function update(version:uint, tags:Object, loaded:Boolean, members:Array):void {
  14                         var member:RelationMember;
  15                         for each (member in this.members) { member.entity.removeParent(this); }
  16                         updateEntityProperties(version,tags,loaded); this.members=members;
  17                         for each (member in members) { member.entity.addParent(this); }
  18                 }
  19
  20         public function get length():uint {
  21             return members.length;
  22         }
  23
  24         public function findEntityMemberIndex(entity:Entity):int {
  25             for (var index:uint = 0; index < members.length; index++) {
  26                 var member:RelationMember = members[index];
  27                 if ( member.entity == entity )
  28                     return index;
  29             }
  30             return -1;
  31         }
  32
  33         public function findEntityMemberIndexes(entity:Entity):Array {
  34             var indexes:Array = [];
  35             for (var index:uint = 0; index < members.length; index++) {
  36                 var member:RelationMember = members[index];
  37                 if ( member.entity == entity )
  38                     indexes.push(index);
  39             }
  40             return indexes;
  41         }
  42
  43         public function getMember(index:uint):RelationMember {
  44             return members[index];
  45         }
  46
  47         public function setMember(index:uint, member:RelationMember):void {
  48                         member.entity.addParent(this);
  49                         members.splice(index, 1, member);
  50                         markDirty();
  51         }
  52
  53         public function insertMember(index:uint, member:RelationMember):void {
  54                         member.entity.addParent(this);
  55             members.splice(index, 0, member);
  56                         markDirty();
  57         }
  58
  59         public function appendMember(member:RelationMember):uint {
  60                         member.entity.addParent(this);
  61             members.push(member);
  62                         markDirty();
  63             return members.length;
  64         }
  65
  66                 public function removeMember(entity:Entity):void {
  67                         var i:int;
  68                         while ((i=findEntityMemberIndex(entity))>-1) {
  69                                 members.splice(i, 1);
  70                         }
  71                         entity.removeParent(this);
  72                         markDirty();
  73                 }
  74
  75         public function removeMemberByIndex(index:uint):void {
  76             var removed:Array=members.splice(index, 1);
  77                         var entity:Entity=removed[0].entity;
  78                         if (findEntityMemberIndex(entity)==-1) { entity.removeParent(this); }
  79                         markDirty();
  80         }
  81
  82                 public override function remove():void {
  83                         removeFromParents();
  84                         for each (var member:RelationMember in members) { member.entity.removeParent(this); }
  85                         members=[];
  86                         deleted=true;
  87             dispatchEvent(new EntityEvent(Connection.RELATION_DELETED, this));
  88                 }
  89
  90                 internal override function isEmpty():Boolean {
  91                         return (deleted || (members.length==0));
  92                 }
  93
  94         public function getDescription():String {
  95             var desc:String = "";
  96             var relTags:Object = getTagsHash();
  97             if ( relTags["type"] ) {
  98                 desc = relTags["type"];
  99                 if ( relTags[desc] )
 100                     desc += " " + relTags[desc];
 101             }
 102             if ( relTags["ref"] )
 103                 desc += " " + relTags["ref"];
 104             if ( relTags["name"] )
 105                 desc += " " + relTags["name"];
 106             return desc;
 107         }
 108
 109                 public override function getType():String {
 110                         return 'relation';
 111                 }
 112
 113                 public override function toString():String {
 114             return "Relation("+id+"@"+version+"): "+members.length+" members "+getTagList();
 115         }
 116
 117     }
 118
 119 }