net/systemeD/potlatch2/TagViewer.mxml

   1 <?xml version="1.0" encoding="utf-8"?>
   2 <mx:VBox
   3         xmlns:mx="http://www.adobe.com/2006/mxml"
   4         xmlns:flexlib="flexlib.containers.*"
   5         xmlns:controls="net.systemeD.controls.*"
   6         xmlns:potlatch2="net.systemeD.potlatch2.*"
   7         horizontalScrollPolicy="off"
   8     backgroundColor="white"
   9     initialize="loadFeatures()">
  10
  11 <mx:ViewStack id="sidebar" width="100%" height="100%" creationPolicy="all">
  12   <mx:VBox id="dndPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
  13     <mx:Text id="dndPanelText" text="{dndPrompt}" width="100%" styleName="helpInfo" />
  14         <mx:Repeater id="dndRep" dataProvider="{MapFeatures.getInstance().getCategoriesForType('point')}">
  15                 <mx:HBox width="100%"><mx:Label text="{dndRep.currentItem.name}:" styleName="dndPanelCategoryLabel"/></mx:HBox>
  16
  17                 <mx:TileList dataProvider="{dndRep.currentItem.getFeaturesForType('point')}" width="100%" height="1"
  18                                      rowHeight="32" columnWidth="32" updateComplete="resizePOIGrid(event)" styleName="dndPanelTileList">
  19                         <mx:itemRenderer>
  20                                 <mx:Component>
  21                                         <mx:VBox toolTip="{data.name}">
  22                                                 <mx:Script><![CDATA[
  23                                                         import mx.events.DragEvent;
  24                                                         import mx.managers.DragManager;
  25                                                         import mx.core.DragSource;
  26
  27                                                         private function dragPOI(event:MouseEvent, tags:Array):void {
  28                                                                 // Get the drag initiator component from the event object.
  29                                                                 var dragInitiator:Image = event.currentTarget as Image;
  30                                                                 var dragSource:DragSource = new DragSource();
  31                                                                 dragSource.addData(tags, 'tags');
  32                                                                 dragSource.addData(event.target.parent.parent.parent.parent, 'container');
  33
  34                                                                 var dragProxy:Image = new Image();
  35                                                                 dragProxy.source = dragInitiator.source;
  36                                                                 dragProxy.width = dragInitiator.width;   // must set width and height explicitly
  37                                                                 dragProxy.height = dragInitiator.height; // for non-embedded images
  38                                                                 DragManager.doDrag(dragInitiator, dragSource, event, dragProxy);
  39                                                         }
  40                                                 ]]></mx:Script>
  41                                                 <mx:Image id="foo" source="{data.image}" height="24" width="24" mouseMove="dragPOI(event, data.tags)" toolTip="{data.name}" />
  42                                         </mx:VBox>
  43                                 </mx:Component>
  44                         </mx:itemRenderer>
  45                 </mx:TileList>
  46         </mx:Repeater>
  47   </mx:VBox>
  48
  49   <mx:VBox id="tagsPanel" width="100%" height="100%" creationPolicy="auto">
  50     <mx:ViewStack id="stack" width="100%" height="100%">
  51       <mx:VBox width="100%" height="100%" label="Simple" id="editorContainer" creationComplete="initEditorStackUIs()">
  52         <mx:HBox width="100%" id="iconContainer" styleName="featureSelector">
  53             <mx:Image id="iconImage"/>
  54             <mx:VBox width="100%" verticalGap="1">
  55               <mx:PopUpButton id="popupChange" creationComplete="initFeatureBox()" openAlways="true" width="100%"/>
  56               <mx:Text condenseWhite="true" width="100%" id="iconText"/>
  57             </mx:VBox>
  58             <mx:LinkButton label="?" click="openDescription()" id="helpLabel" styleName="helpInfo"/>
  59         </mx:HBox>
  60       </mx:VBox>
  61       <mx:VBox width="100%" height="100%" label="Advanced" id="advancedContainer" initialize="checkAdvanced()" verticalGap="1">
  62         <mx:Label id="advancedID" click="openEntityPage()">
  63           <mx:htmlText><![CDATA[<i>No Selection</i>]]></mx:htmlText>
  64         </mx:Label>
  65
  66                 <potlatch2:TagGrid id="advancedTagGrid" width="100%" height="75%" />
  67
  68         <mx:HBox horizontalAlign="right" width="100%">
  69           <mx:LinkButton label="Delete" click="advancedTagGrid.removeTag()" enabled="{advancedTagGrid.selectedItem != null? true : false}"/>
  70           <mx:LinkButton label="Add" click="advancedTagGrid.addNewTag()"/>
  71         </mx:HBox>
  72
  73         <mx:DataGrid editable="true" width="100%" height="25%" id="relationsGrid"
  74             doubleClickEnabled="true"
  75             itemDoubleClick="editRelation(relationsGrid.selectedItem.id)"
  76             doubleClick="if (event.target.parent==relationsGrid) { addToRelation(); }">
  77             <mx:columns>
  78                 <mx:DataGridColumn editable="false" dataField="description" headerText="Relation"/>
  79                 <mx:DataGridColumn editable="false" dataField="id_idx" headerText="ID"/>
  80                 <mx:DataGridColumn editable="true" dataField="role" headerText="Role"/>
  81             </mx:columns>
  82         </mx:DataGrid>
  83
  84         <mx:HBox horizontalAlign="right" width="100%">
  85           <mx:LinkButton label="Remove from" click="removeFromRelation(relationsGrid.selectedItem.id, relationsGrid.selectedItem.index)"
  86                           enabled="{relationsGrid.selectedItem != null? true : false}"/>
  87           <mx:LinkButton label="Add to" click="addToRelation()"/>
  88         </mx:HBox>
  89
  90       </mx:VBox>
  91
  92       <mx:VBox width="100%" height="100%" label="Members" id="membersVBox" initialize="checkMembers()" verticalGap="1">
  93         <mx:Label id="membersText" text="Relation Members"/>
  94         <mx:DataGrid editable="true" width="100%" height="100%" id="membersGrid"
  95                       dragEnabled="true" dragMoveEnabled="true" dropEnabled="true">
  96           <mx:columns>
  97             <mx:DataGridColumn editable="false" dataField="type" headerText="Type"/>
  98             <mx:DataGridColumn editable="false" dataField="id" headerText="ID"/>
  99             <mx:DataGridColumn editable="true" dataField="role" headerText="Role"/>
 100           </mx:columns>
 101         </mx:DataGrid>
 102       </mx:VBox>
 103
 104       </mx:ViewStack>
 105
 106           <mx:HBox width="100%">
 107                 <mx:LinkBar dataProvider="{stack}"/>
 108                 <mx:Spacer width="100%"/>
 109                 <mx:LinkButton
 110                         icon="@Embed('../../../embedded/view_tabbed.png')"
 111                         disabledIcon="@Embed('../../../embedded/view_tabbed_disabled.png')"
 112                         click="setEditorStackUI(true)" id="tabNavigatorLabel" paddingTop="6"
 113                         toolTip="Show in tabs"
 114                         enabled="{editorStack is Accordion &amp;&amp; stack.selectedIndex==0}" />
 115                 <mx:LinkButton
 116                         icon="@Embed('../../../embedded/view_accordion.png')"
 117                         disabledIcon="@Embed('../../../embedded/view_accordion_disabled.png')"
 118                         click="setEditorStackUI(false)" id="accordionLabel" paddingTop="6"
 119                         toolTip="Show in sliding windows"
 120                         enabled="{editorStack is SuperTabNavigator &amp;&amp; stack.selectedIndex==0}" />
 121           </mx:HBox>
 122   </mx:VBox>
 123 </mx:ViewStack>
 124
 125   <mx:Script><![CDATA[
 126       import net.systemeD.halcyon.connection.*;
 127       import net.systemeD.potlatch2.mapfeatures.*;
 128
 129       import mx.collections.*;
 130       import mx.containers.*;
 131       import mx.events.*;
 132       import mx.core.*;
 133       import mx.managers.PopUpManager;
 134       import flash.geom.Point;
 135       import flash.net.*;
 136       import mx.events.DragEvent;
 137       import mx.managers.DragManager;
 138       import mx.core.DragSource;
 139       import flexlib.containers.SuperTabNavigator;
 140
 141       private static const dndPrompt:String="Add new points by dragging them onto the map";
 142
 143       private var editorStackTabNavigator:SuperTabNavigator;
 144       private var editorStackAccordion:Accordion;
 145       [Bindable] private var editorStack:Container;
 146
 147       public var mapFeatures:MapFeatures;
 148       private var selectedEntity:Entity;
 149       private var tagDataProvider:ArrayCollection;
 150       private var tw:CategorySelector = null;
 151       private var feature:Feature = null;
 152
 153       public function setEntity(entity:Entity):void {
 154           UIComponent.suspendBackgroundProcessing();
 155           if ( selectedEntity != entity ) {
 156               if ( selectedEntity != null )
 157                   selectedEntity.removeEventListener(Connection.TAG_CHANGED, tagChanged);
 158               selectedEntity = entity;
 159               if ( selectedEntity != null )
 160                   selectedEntity.addEventListener(Connection.TAG_CHANGED, tagChanged);
 161           }
 162
 163           if ( advancedID != null )
 164               setupAdvanced(entity);
 165           if (entity is Relation) {
 166               stack.addChild(membersVBox);
 167           }
 168           refreshFeatureIcon();
 169           if (selectedEntity == null) {
 170             sidebar.selectedChild = dndPanel;
 171           } else {
 172             initialiseEditors();
 173             sidebar.selectedChild = tagsPanel;
 174           }
 175           UIComponent.resumeBackgroundProcessing();
 176       }
 177
 178       private function refreshFeatureIcon():void {
 179           var oldFeature:Feature = feature;
 180           feature = selectedEntity == null ? null : mapFeatures.findMatchingFeature(selectedEntity);
 181           if ( feature != oldFeature ) {
 182               if ( oldFeature != null )
 183                   oldFeature.removeEventListener("imageChanged", featureImageChanged);
 184               if ( feature != null )
 185                   feature.addEventListener("imageChanged", featureImageChanged);
 186           }
 187
 188           if ( feature != null && feature.name != null ) {
 189               setFeatureIcon(selectedEntity, feature);
 190           } else {
 191               blankFeatureIcon(selectedEntity);
 192           }
 193       }
 194
 195       private function featureImageChanged(event:Event):void {
 196           setFeatureIcon(selectedEntity, feature);
 197       }
 198
 199       private function setFeatureIcon(entity:Entity, feature:Feature):void {
 200           //blankFeatureIcon(entity);
 201
 202           iconImage.source = feature.image;
 203
 204           var txt:String = feature.htmlDetails(entity);
 205           iconText.htmlText = txt;
 206           popupChange.label = feature.name;
 207           setLimitTypes(entity);
 208           tw.setSelectedFeature(feature);
 209           helpLabel.visible = feature.hasHelpURL();
 210       }
 211
 212       private function setLimitTypes(entity:Entity):void {
 213           var type:String = null;
 214           if ( entity is Node )
 215               type = "point";
 216           else if ( entity is Way )
 217               type = Way(entity).isArea() ? "area" : "line";
 218           else if ( entity is Relation )
 219               type = "relation";
 220           tw.setLimitTypes(type);
 221       }
 222
 223       private function blankFeatureIcon(entity:Entity):void {
 224           iconImage.source = null;
 225           popupChange.label = "unknown";
 226           setLimitTypes(entity);
 227                   if (entity == null) {
 228                         iconText.htmlText = "<i>Nothing selected</i>";
 229             tw.setNoSelectedFeature();
 230                   } else if (entity.hasTags()) {
 231                         iconText.htmlText = "<b>Not recognised</b><br/>Try looking at the tags under the advanced properties";
 232             tw.setSelectedFeature(null);
 233                   } else {
 234                         iconText.htmlText = "<b>No tags set</b><br/>Use the menu above to say what this "+entity.getType()+" is";
 235             tw.setSelectedFeature(null);
 236           }
 237           helpLabel.visible = false;
 238       }
 239
 240       private var tabComponents:Object = {};
 241
 242       private function initialiseEditors():void {
 243           editorStack.removeAllChildren();
 244           if ( selectedEntity == null || feature == null )
 245               return;
 246
 247           var editorBox:VBox = createEditorBox();
 248           editorBox.label = "Basic";
 249           editorStack.addChild(editorBox);
 250
 251           var tabs:Object = {};
 252           tabComponents = {};
 253
 254           for each (var factory:EditorFactory in feature.editors) {
 255               if ( factory.presence.isEditorPresent(factory, selectedEntity, null) ) {
 256                   var editor:DisplayObject = factory.createEditorInstance(selectedEntity);
 257                   if ( editor != null )
 258                       editorBox.addChild(editor);
 259               }
 260               var category:String = factory.category;
 261               if (category!='') {
 262                       var tab:VBox = tabs[category];
 263                       if ( tab == null) {
 264                           tab = createEditorBox();
 265                           tab.label = category;
 266                           editorStack.addChild(tab);
 267                           tabs[category] = tab;
 268                           tabComponents[tab] = [];
 269                       }
 270                       var catEditor:DisplayObject = factory.createEditorInstance(selectedEntity);
 271                       if ( catEditor != null )
 272                           tabComponents[tab].push(catEditor);
 273                       //    tab.addChild(catEditor);
 274               }
 275           }
 276       }
 277
 278       private function createEditorBox():VBox {
 279           var box:VBox = new VBox();
 280           box.percentWidth = 100;
 281           box.percentHeight = 100;
 282           box.styleName = "editorContainer";
 283           return box;
 284       }
 285
 286       private function ensureEditorsPopulated(tab:VBox):void {
 287           var components:Array = tabComponents[tab];
 288           if ( components == null || tab == null || tab.numChildren >= components.length )
 289               return;
 290           for each (var component:DisplayObject in components ) {
 291               tab.addChild(component);
 292           }
 293       }
 294
 295         private function initEditorStackUIs():void {
 296                 editorStackTabNavigator = new SuperTabNavigator();
 297                 editorStackTabNavigator.allowTabSqueezing=false;
 298                 editorStackTabNavigator.minTabWidth=10;
 299                 editorStackTabNavigator.closePolicy="close_never";
 300                 editorStackTabNavigator.scrollSpeed=20;
 301                 editorStackTabNavigator.creationPolicy="auto";
 302                 editorStackTabNavigator.percentWidth=100;
 303                 editorStackTabNavigator.percentHeight=100;
 304
 305                 editorStackAccordion = new Accordion();
 306                 editorStackAccordion.percentWidth=100;
 307                 editorStackAccordion.percentHeight=100;
 308                 editorStackAccordion.creationPolicy="auto";
 309
 310                 setEditorStackUI(true);
 311         }
 312
 313         private function setEditorStackUI(isTabbed:Boolean):void {
 314                 var children:Array=[]; var i:uint;
 315
 316                 if (editorStack) {
 317                         // blank existing component
 318                         editorStack.removeEventListener("change",editorStackUIChange);
 319                         editorStack.removeEventListener("updateComplete",editorStackUIUpdate);
 320                         editorStack.removeAllChildren();
 321                         editorContainer.removeChildAt(1);
 322                 }
 323
 324                 // replace with new component
 325                 editorStack = (isTabbed ? editorStackTabNavigator : editorStackAccordion) as Container;
 326                 editorContainer.addChild(editorStack);
 327
 328                 // re-add children and listeners
 329                 initialiseEditors();
 330                 editorStack.addEventListener("change",editorStackUIChange);
 331                 editorStack.addEventListener("updateComplete",editorStackUIUpdate);
 332         }
 333
 334         private function editorStackUIChange(event:Event):void {
 335                 ensureEditorsPopulated(IndexChangedEvent(event).relatedObject as VBox);
 336         }
 337
 338         private function editorStackUIUpdate(event:Event):void {
 339                 if (editorStack is SuperTabNavigator) {
 340                         var e:SuperTabNavigator = editorStack as SuperTabNavigator;
 341                         if (e.selectedIndex<0) { return; }
 342                         for (var i:uint=0; i<e.numChildren; i++) {
 343                                 e.getTabAt(i).selected=(i==e.selectedIndex);
 344                         }
 345                 }
 346         }
 347
 348
 349         public function togglePanel():void {
 350                 if (stack.selectedChild==editorContainer && selectedEntity!=null) {
 351                         stack.selectedChild=advancedContainer;
 352                 } else if (stack.selectedChild!=editorContainer) {
 353                         stack.selectedChild=editorContainer;
 354                 }
 355         }
 356
 357       private function checkAdvanced():void {
 358           if ( selectedEntity != null )
 359              setupAdvanced(selectedEntity);
 360       }
 361
 362       private var listeningToRelations:Array = [];
 363
 364       private function setupAdvanced(entity:Entity):void {
 365                 advancedTagGrid.init(entity);
 366
 367                 if ( entity == null ) {
 368                         advancedID.htmlText = "";
 369                 } else {
 370                         var entityText:String = "xx";
 371                         if      ( entity is Node     ) entityText = "Node";
 372                         else if ( entity is Way      ) entityText = "Way";
 373                         else if ( entity is Relation ) entityText = "Relation";
 374                         advancedID.htmlText = entityText+": <b>"+entity.id+"</b>";
 375                 }
 376
 377                 removeRelationListeners();
 378                 if ( selectedEntity != null ) {
 379                         selectedEntity.removeEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
 380                         selectedEntity.removeEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
 381                 }
 382
 383                 if ( entity == null ) {
 384                         relationsGrid.dataProvider = null;
 385                 } else {
 386                         resetRelationsGrid(entity);
 387                         entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
 388                         entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
 389                 }
 390       }
 391
 392           public function addNewTag():void {
 393                 if (stack.selectedChild!=advancedContainer) { return; }
 394                 advancedTagGrid.addNewTag();
 395           }
 396
 397       private function addedToRelation(event:RelationMemberEvent):void {
 398          resetRelationsGrid(selectedEntity);
 399       }
 400
 401       private function removedFromRelation(event:RelationMemberEvent):void {
 402          resetRelationsGrid(selectedEntity);
 403       }
 404
 405       private function removeRelationListeners():void {
 406           for each( var rel:Relation in listeningToRelations ) {
 407               rel.removeEventListener(Connection.TAG_CHANGED, relationTagChanged);
 408               rel.removeEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
 409               rel.removeEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
 410           }
 411           listeningToRelations = [];
 412           relationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
 413       }
 414
 415       private function resetRelationsGrid(entity:Entity):void {
 416           removeRelationListeners();
 417           var relations:Array = [];
 418           for each( var rel:Relation in entity.parentRelations ) {
 419               for each( var memberIndex:int in rel.findEntityMemberIndexes(entity)) {
 420                   var props:Object = {};
 421                   props["relation"] = rel;
 422                   props["id"] = rel.id;
 423                   props["index"] = memberIndex;
 424                   props["role"] = rel.getMember(memberIndex).role;
 425                   props["description"] = rel.getDescription();
 426                   props["id_idx"] = rel.id + "/"+memberIndex;
 427
 428                   relations.push(props);
 429               }
 430
 431               rel.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
 432               rel.addEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
 433               rel.addEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
 434               listeningToRelations.push(rel);
 435           }
 436           relationsGrid.dataProvider = relations;
 437           relationsGrid.addEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged, false, -100);
 438       }
 439
 440       private function relationRoleChanged(event:DataGridEvent):void {
 441                 if (event.dataField != 'role') { return; }      // shouldn't really happen
 442
 443                 var relations:Array=event.currentTarget.dataProvider.toArray();
 444                 var props:Object=relations[event.rowIndex];
 445
 446                 var relation:Relation=props['relation'];
 447                 var index:uint=props['index'];
 448                 var newRole:String=event.itemRenderer.data['role'];
 449
 450                 relation.setMember(index, new RelationMember(selectedEntity,newRole));
 451       }
 452
 453       private function relationTagChanged(event:TagEvent):void {
 454           resetRelationsGrid(selectedEntity);
 455       }
 456
 457       private function entityRelationMemberChanged(event:RelationMemberEvent):void {
 458           resetRelationsGrid(selectedEntity);
 459       }
 460
 461       private function checkMembers():void {
 462           if (selectedEntity is Relation) {
 463             setupMembers(selectedEntity as Relation);
 464           }
 465       }
 466
 467       private function setupMembers(rel:Relation):void {
 468           var members:Array = [];
 469           for (var i:int=0 ; i<rel.length; i++) {
 470             var props:Object = {};
 471             var member:RelationMember = rel.getMember(i);
 472             props["id"] = member.entity.id;
 473             props["type"] = member.entity.getType();
 474             props["role"] = member.role;
 475
 476             members.push(props);
 477           }
 478           membersGrid.dataProvider = members;
 479           membersGrid.dataProvider.addEventListener('collectionChange', membersChange);
 480       }
 481
 482       private function membersChange(event:Event):void {
 483           // Dropping all the members and re-adding them isn't exactly optimal
 484           // but is at least robust for any kind of change.
 485           // Figuring out a better way is someone else's FIXME
 486
 487           var conn:Connection = Connection.getConnectionInstance();
 488           var rel:Relation = selectedEntity as Relation
 489
 490           // drop members
 491           for (var i:int=rel.length-1 ; i>=0; i--) {
 492             rel.removeMemberByIndex(i);
 493           }
 494
 495           // add members in new order
 496           for each(var memberObject:Object in membersGrid.dataProvider) {
 497             var e:Entity;
 498             var id:Number = memberObject.id;
 499             if(memberObject.type == 'node') {
 500               e = conn.getNode(id);
 501             } else if (memberObject.type == 'way') {
 502               e = conn.getWay(id);
 503             } else if (memberObject.type == 'relation') {
 504               e = conn.getRelation(id);
 505             }
 506             rel.appendMember(new RelationMember(e, memberObject.role));
 507           }
 508       }
 509
 510       private function editRelation(id:Number):void {
 511           var panel:RelationEditorPanel = RelationEditorPanel(
 512               PopUpManager.createPopUp(Application(Application.application), RelationEditorPanel, true));
 513           panel.setRelation(Connection.getConnectionInstance().getRelation(id));
 514           PopUpManager.centerPopUp(panel);
 515       }
 516
 517       private function tagChanged(event:TagEvent):void {
 518           refreshFeatureIcon();
 519
 520           if ( tagDataProvider != null ) {
 521               // check to see if the key is already in our list
 522               var exists:Boolean = false;
 523               var tag:Tag = null;
 524               var i:uint;
 525               for ( i = 0; i < tagDataProvider.length && !exists; i++ ) {
 526                   tag = Tag(tagDataProvider.getItemAt(i));
 527                   exists = tag.key == event.key;
 528               }
 529               if ( !exists ) {
 530                   tag = new Tag(selectedEntity, event.key, event.newValue);
 531                   tagDataProvider.addItem(tag);
 532                   tagDataProvider.refresh();
 533               } else {
 534                   if ( event.newValue == null ) {
 535                       tagDataProvider.removeItemAt(i-1);
 536                       tagDataProvider.refresh();
 537                   } else {
 538                       tagDataProvider.itemUpdated(tag, "value");
 539                   }
 540               }
 541           }
 542       }
 543
 544       public function loadFeatures():void {
 545           mapFeatures = MapFeatures.getInstance();
 546           stack.removeChild(membersVBox); // remove by default, will be added if relation
 547       }
 548
 549       public function openDescription():void {
 550           if ( feature != null && feature.hasHelpURL() )
 551               navigateToURL(new URLRequest(feature.helpURL), "potlatch_help");
 552       }
 553
 554       public function openEntityPage():void {
 555           if (selectedEntity != null && selectedEntity.id >= 0) {
 556               // This is slightly hard-coded, but not drastically. The ../s could be changed for string manipulation of the apiBase
 557               var urlBase:String = Connection.getConnectionInstance().apiBase + '../../browse/'
 558               navigateToURL(new URLRequest(urlBase+selectedEntity.getType()+'/'+selectedEntity.id), "potlatch_browse");
 559           }
 560       }
 561
 562       public function addToRelation():void {
 563           new RelationSelectPanel().init(selectedEntity,new Object());
 564       }
 565
 566       public function removeFromRelation(id:Number, index:int):void {
 567           Connection.getConnectionInstance().getRelation(id).removeMemberByIndex(index);
 568       }
 569
 570       public function initFeatureBox():void {
 571           tw = new CategorySelector();
 572           tw.addEventListener("selectedType", changeFeatureType);
 573           popupChange.popUp = tw;
 574       }
 575
 576       public function changeFeatureType(event:Event):void {
 577           if ( selectedEntity == null )
 578               return;
 579
 580           UIComponent.suspendBackgroundProcessing();
 581           var newFeature:Feature = tw.selectedType;
 582           var undoStack:Function = MainUndoStack.getGlobalStack().addAction;
 583           var action:CompositeUndoableAction = new CompositeUndoableAction(
 584                   "Set "+selectedEntity.getType()+" "+selectedEntity.id+" to "+newFeature.name);
 585                   selectedEntity.suspend();
 586
 587           // remove tags from the current feature
 588           if ( feature != null ) {
 589               for each( var oldtag:Object in feature.tags ) {
 590                   selectedEntity.setTag(oldtag["k"], null, action.push);
 591               }
 592           }
 593
 594           // set tags for new feature
 595           if ( newFeature != null ) {
 596               for each( var newtag:Object in newFeature.tags ) {
 597                   selectedEntity.setTag(newtag["k"], newtag["v"], action.push);
 598               }
 599           }
 600
 601                   selectedEntity.resume();
 602           undoStack(action);
 603           popupChange.close();
 604           initialiseEditors();
 605           UIComponent.resumeBackgroundProcessing();
 606       }
 607
 608         private function resizePOIGrid(event:Event):void {
 609                 var rows:Number=event.target.dataProvider.length/event.target.columnCount;
 610                 if (rows!=Math.floor(rows)) { rows=Math.floor(rows+1); }
 611                 event.target.height=rows*(event.target.rowHeight+1);
 612         }
 613   ]]></mx:Script>
 614 </mx:VBox>
 615