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     xmlns:sidepanel="net.systemeD.potlatch2.panels.*"
   8         horizontalScrollPolicy="off"
   9     backgroundColor="white"
  10     initialize="loadFeatures()">
  11
  12 <mx:ViewStack id="sidebar" width="100%" height="100%" creationPolicy="all">
  13
  14   <!-- Drag & drop icon panel -->
  15
  16   <mx:VBox id="dndPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
  17     <mx:Text id="dndPanelText" text="{dndPrompt}" width="100%" styleName="helpInfo" />
  18         <mx:Repeater id="dndRep" dataProvider="{MapFeatures.getInstance().getCategoriesForType('point')}" styleName="dndRepeater">
  19                 <mx:HBox width="100%" styleName="dndPanelCategory">
  20                         <mx:Label text="{dndRep.currentItem.name}:" styleName="dndPanelCategoryLabel"/>
  21                 </mx:HBox>
  22
  23                 <mx:TileList dataProvider="{dndRep.currentItem.getFeaturesForType('point', true)}" width="100%" height="1"
  24                                      rowHeight="32" columnWidth="32" updateComplete="resizePOIGrid(event)" styleName="dndPanelTileList">
  25                         <mx:itemRenderer>
  26                                 <mx:Component>
  27                                         <mx:VBox toolTip="{data.name}">
  28                                                 <mx:Script><![CDATA[
  29                                                         import mx.events.DragEvent;
  30                                                         import mx.managers.DragManager;
  31                                                         import mx.core.DragSource;
  32
  33                                                         private function dragPOI(event:MouseEvent, tags:Array):void {
  34                                                                 // Get the drag initiator component from the event object.
  35                                                                 var dragInitiator:Image = event.currentTarget as Image;
  36                                                                 var dragSource:DragSource = new DragSource();
  37                                                                 dragSource.addData(tags, 'tags');
  38                                                                 dragSource.addData(event.target.parent.parent.parent.parent, 'container');
  39
  40                                                                 var dragProxy:Image = new Image();
  41                                                                 dragProxy.source = dragInitiator.source;
  42                                                                 dragProxy.width = dragInitiator.width;   // must set width and height explicitly
  43                                                                 dragProxy.height = dragInitiator.height; // for non-embedded images
  44                                                                 DragManager.doDrag(dragInitiator, dragSource, event, dragProxy);
  45                                                         }
  46                                                 ]]></mx:Script>
  47                                                 <mx:Image id="foo" source="{data.dndimage}" height="24" width="24" mouseMove="dragPOI(event, data.tags)" toolTip="{data.name}" />
  48                                         </mx:VBox>
  49                                 </mx:Component>
  50                         </mx:itemRenderer>
  51                 </mx:TileList>
  52         </mx:Repeater>
  53   </mx:VBox>
  54
  55   <!-- Standard tagging panel -->
  56
  57   <mx:VBox id="tagsPanel" width="100%" height="100%" creationPolicy="auto">
  58     <mx:ViewStack id="stack" width="100%" height="100%">
  59       <mx:VBox width="100%" height="100%" label="Simple" id="editorContainer" creationComplete="initEditorStackUIs()" styleName="dndPanelVbox">
  60         <mx:VBox width="100%" verticalGap="1" styleName="dndTagHeader">
  61           <mx:HBox width="100%" id="iconContainer" styleName="featureSelector">
  62             <mx:Image id="iconImage"/>
  63             <mx:Text condenseWhite="true" width="100%" id="iconText" styleName="dndIconText"/>
  64           </mx:HBox>
  65           <mx:HBox width="100%">
  66             <mx:PopUpButton id="popupChange" openAlways="true" width="100%" styleName="dndTagPopUpMenu" closeDuration="0" />
  67             <mx:LinkButton icon="@Embed('../../../embedded/information.svg')" click="openDescription()" id="helpLabel" styleName="helpInfo"/>
  68           </mx:HBox>
  69         </mx:VBox>
  70       </mx:VBox>
  71       <mx:VBox width="100%" height="100%" label="Advanced" id="advancedContainer" initialize="checkAdvanced()" verticalGap="1">
  72         <mx:Label id="advancedID" click="openEntityPage()">
  73           <mx:htmlText><![CDATA[<i>No Selection</i>]]></mx:htmlText>
  74         </mx:Label>
  75
  76                 <potlatch2:TagGrid id="advancedTagGrid" width="100%" height="75%" />
  77
  78         <mx:HBox horizontalAlign="right" width="100%">
  79           <mx:LinkButton label="Delete" click="advancedTagGrid.removeTag()" id="advancedDeleteButton" enabled="{advancedTagGrid.selectedItem != null? true : false}"/>
  80           <mx:LinkButton label="Add" click="advancedTagGrid.addNewTag()" id="advancedAddButton"/>
  81         </mx:HBox>
  82
  83         <mx:DataGrid editable="true" width="100%" height="25%" id="relationsGrid"
  84             doubleClickEnabled="true"
  85             itemDoubleClick="editRelation(relationsGrid.selectedItem.id)"
  86             doubleClick="if (event.target.parent==relationsGrid) { addToRelation(); }">
  87             <mx:columns>
  88                 <mx:DataGridColumn editable="false" dataField="description" headerText="Relation"/>
  89                 <mx:DataGridColumn editable="false" dataField="id_idx" headerText="ID"/>
  90                 <mx:DataGridColumn editable="true" dataField="role" headerText="Role">
  91                     <mx:itemEditor><mx:Component><mx:TextInput restrict="&#x0020;-&#x10FFFF;" /></mx:Component></mx:itemEditor>
  92                 </mx:DataGridColumn>
  93                                 <mx:DataGridColumn width="20" editable="false">
  94                                         <mx:itemRenderer>
  95                                                 <mx:Component>
  96                                     <mx:HBox horizontalAlign="center" verticalAlign="middle">
  97                                                                 <mx:PopUpButton arrowButtonWidth="12" paddingLeft="0" paddingRight="0" width="12" height="12"
  98                                                                                 open="{outerDocument.updateRelationMenu(event);}"
  99                                                                                 creationComplete="{outerDocument.createRelationMenu(PopUpButton(event.target));}"/>
 100                                                         </mx:HBox>
 101                                                 </mx:Component>
 102                                         </mx:itemRenderer>
 103                                 </mx:DataGridColumn>
 104             </mx:columns>
 105         </mx:DataGrid>
 106
 107         <mx:HBox horizontalAlign="right" width="100%">
 108           <mx:LinkButton label="Remove from" click="removeFromRelation(relationsGrid.selectedItem.id, relationsGrid.selectedItem.index)"
 109                           enabled="{relationsGrid.selectedItem != null? true : false}"/>
 110           <mx:LinkButton label="Add to" click="addToRelation()"/>
 111         </mx:HBox>
 112
 113       </mx:VBox>
 114
 115       <mx:VBox width="100%" height="100%" label="Members" id="membersVBox" initialize="checkMembers()" verticalGap="1">
 116         <mx:Label id="membersText" text="Relation Members"/>
 117         <mx:DataGrid editable="true" width="100%" height="100%" id="membersGrid"
 118                       dragEnabled="true" dragMoveEnabled="true" dropEnabled="true">
 119           <mx:columns>
 120             <mx:DataGridColumn editable="false" dataField="type" headerText="Type"/>
 121             <mx:DataGridColumn editable="false" dataField="id" headerText="ID"/>
 122             <mx:DataGridColumn editable="true" dataField="role" headerText="Role">
 123                                 <mx:itemEditor><mx:Component><mx:TextInput restrict="&#x0020;-&#x10FFFF;" /></mx:Component></mx:itemEditor>
 124                         </mx:DataGridColumn>
 125           </mx:columns>
 126         </mx:DataGrid>
 127       </mx:VBox>
 128
 129       </mx:ViewStack>
 130
 131           <mx:HBox width="100%">
 132                 <mx:LinkBar dataProvider="{stack}"/>
 133                 <mx:Spacer width="100%"/>
 134                 <mx:LinkButton
 135                         icon="@Embed('../../../embedded/view_tabbed.png')"
 136                         disabledIcon="@Embed('../../../embedded/view_tabbed_disabled.png')"
 137                         click="setEditorStackUI(true)" id="tabNavigatorLabel" paddingTop="6"
 138                         toolTip="Show in tabs"
 139                         enabled="{editorStack is Accordion &amp;&amp; stack.selectedIndex==0}" />
 140                 <mx:LinkButton
 141                         icon="@Embed('../../../embedded/view_accordion.png')"
 142                         disabledIcon="@Embed('../../../embedded/view_accordion_disabled.png')"
 143                         click="setEditorStackUI(false)" id="accordionLabel" paddingTop="6"
 144                         toolTip="Show in sliding windows"
 145                         enabled="{editorStack is SuperTabNavigator &amp;&amp; stack.selectedIndex==0}" />
 146           </mx:HBox>
 147   </mx:VBox>
 148
 149   <!-- Multiple selection -->
 150
 151   <mx:VBox id="multiplePanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
 152     <potlatch2:TagGrid id="multiAdvancedTagGrid" width="100%" height="75%" />
 153         <mx:HBox horizontalAlign="right" width="100%">
 154           <mx:LinkButton label="Delete" click="multiAdvancedTagGrid.removeTag()" enabled="{multiAdvancedTagGrid.selectedItem != null? true : false}"/>
 155           <mx:LinkButton label="Add" click="multiAdvancedTagGrid.addNewTag()" />
 156         </mx:HBox>
 157
 158     <mx:DataGrid editable="true" width="100%" height="25%" id="multiRelationsGrid"
 159         doubleClickEnabled="true"
 160         itemDoubleClick="editRelation(multiRelationsGrid.selectedItem.id)"
 161         doubleClick="if (event.target.parent==multiRelationsGrid) { addToRelation(); }">
 162         <mx:columns>
 163             <mx:DataGridColumn editable="false" dataField="description" headerText="Relation"/>
 164             <mx:DataGridColumn editable="false" dataField="id_idx" headerText="ID"/>
 165             <mx:DataGridColumn editable="true" dataField="role" headerText="Role">
 166                 <mx:itemEditor><mx:Component><mx:TextInput restrict="&#x0020;-&#x10FFFF;" /></mx:Component></mx:itemEditor>
 167             </mx:DataGridColumn>
 168                         <mx:DataGridColumn width="20" editable="false">
 169                                 <mx:itemRenderer>
 170                                         <mx:Component>
 171                             <mx:HBox horizontalAlign="center" verticalAlign="middle">
 172                                                         <mx:PopUpButton arrowButtonWidth="12" paddingLeft="0" paddingRight="0" width="12" height="12"
 173                                                                         open="{outerDocument.updateRelationMenu(event);}"
 174                                                                         creationComplete="{outerDocument.createRelationMenu(PopUpButton(event.target));}"/>
 175                                                 </mx:HBox>
 176                                         </mx:Component>
 177                                 </mx:itemRenderer>
 178                         </mx:DataGridColumn>
 179         </mx:columns>
 180     </mx:DataGrid>
 181     <mx:HBox horizontalAlign="right" width="100%">
 182       <mx:LinkButton label="Remove from" click="removeFromRelation(multiRelationsGrid.selectedItem.id)"
 183                       enabled="{multiRelationsGrid.selectedItem != null? true : false}"/>
 184       <mx:LinkButton label="Add to" click="addToRelation()"/>
 185     </mx:HBox>
 186
 187   </mx:VBox>
 188
 189   <!-- Multiple selection but items cannot be edited -->
 190
 191   <mx:VBox id="multipleInvalidPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
 192         <mx:Text id="multipleInvalidPanelText" text="You have selected multiple items." width="100%" styleName="helpInfo" />
 193   </mx:VBox>
 194
 195   <!-- Generic marker panel -->
 196
 197   <mx:VBox id="markerPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
 198     <sidepanel:MarkerPanel id="markerPanelContents" width="100%"/>
 199   </mx:VBox>
 200
 201   <!-- Bug editing panel -->
 202
 203   <mx:VBox id="bugPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
 204     <sidepanel:BugPanel id="bugPanelContents" width="100%"/>
 205   </mx:VBox>
 206
 207 </mx:ViewStack>
 208
 209   <mx:Script><![CDATA[
 210       import net.systemeD.halcyon.connection.*;
 211       import net.systemeD.halcyon.VectorLayer;
 212       import net.systemeD.potlatch2.mapfeatures.*;
 213
 214       import mx.collections.*;
 215       import mx.containers.*;
 216       import mx.events.*;
 217       import mx.core.*;
 218       import mx.managers.PopUpManager;
 219       import mx.controls.Menu;
 220       import flash.geom.Point;
 221       import flash.net.*;
 222       import mx.events.DragEvent;
 223       import mx.managers.DragManager;
 224       import mx.core.DragSource;
 225       import flexlib.containers.SuperTabNavigator;
 226
 227       [Bindable]
 228       public var dndPrompt:String="Add new points by dragging them onto the map";
 229
 230       private var editorStackTabNavigator:SuperTabNavigator;
 231       private var editorStackAccordion:Accordion;
 232       [Bindable] private var editorStack:Container;
 233
 234       public var mapFeatures:MapFeatures;
 235       private var selectedEntity:Entity;
 236       private var currentCategorySelector:CategorySelector;
 237       private var categorySelectors:Object = {};        // hash of categorySelectors for each limitType
 238       private var feature:Feature = null;
 239
 240       private var rowData:Object;               // relation membership reference, needed so it's accessible from relation actions menu
 241
 242           public function setEntity(entities:Array, layer:VectorLayer=null):void {
 243                 UIComponent.suspendBackgroundProcessing();
 244
 245                 var firstSelected:Entity=null;
 246                 if (entities.length==1) { firstSelected=entities[0]; }
 247
 248                 if (selectedEntity!=firstSelected && selectedEntity!=null) {
 249                         selectedEntity.removeEventListener(Connection.TAG_CHANGED, tagChanged);
 250                         selectedEntity.removeEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
 251                         selectedEntity.removeEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
 252                 }
 253
 254                 if (entities.length==0) {
 255                         // Nothing selected, so show drag-and-drop panel
 256                         sidebar.selectedChild = dndPanel;
 257
 258                 } else if (entities.length==1) {
 259                         // Single entity selected, so show tag panel
 260                         selectedEntity=firstSelected;
 261                         if (selectedEntity!=null) { selectedEntity.addEventListener(Connection.TAG_CHANGED, tagChanged); }
 262                         if (advancedID!=null) { setupAdvanced(firstSelected); }
 263                         if (firstSelected is Relation) { stack.addChild(membersVBox); }
 264             if (selectedEntity is Marker && layer is BugLayer) {
 265               bugPanelContents.init(selectedEntity, layer);
 266               sidebar.selectedChild = bugPanel;
 267             } else if (selectedEntity is Marker) {
 268               markerPanelContents.init(selectedEntity, layer);
 269               sidebar.selectedChild = markerPanel;
 270             } else {
 271               refreshFeatureIcon();
 272               initialiseEditors();
 273               sidebar.selectedChild = tagsPanel;
 274             }
 275
 276                 } else if(isMultipleEditable(entities)) {
 277                         selectedEntity = new EntityCollection(entities);
 278                         selectedEntity.addEventListener(Connection.TAG_CHANGED, tagChanged);
 279             sidebar.selectedChild = multiplePanel;
 280                         setupMultiAdvanced(selectedEntity);
 281
 282                 } else {
 283                         //The selection contains elements which can't be edited all together.
 284                         sidebar.selectedChild = multipleInvalidPanel;
 285                 }
 286                 UIComponent.resumeBackgroundProcessing();
 287       }
 288
 289       private function refreshFeatureIcon():void {
 290           var oldFeature:Feature = feature;
 291           feature = selectedEntity == null ? null : mapFeatures.findMatchingFeature(selectedEntity);
 292           if ( feature != oldFeature ) {
 293               if ( oldFeature != null )
 294                   oldFeature.removeEventListener("imageChanged", featureImageChanged);
 295               if ( feature != null )
 296                   feature.addEventListener("imageChanged", featureImageChanged);
 297           }
 298           setCategorySelector(selectedEntity, feature);
 299       }
 300
 301       private function featureImageChanged(event:Event):void {
 302           setCategorySelector(selectedEntity, feature);
 303       }
 304
 305       /** Set the icon, categorySelector and help text for the current entity. */
 306       private function setCategorySelector(entity:Entity, feature:Feature):void {
 307                         // Remove the "user has selected something" event listener from previous categorySelector,
 308                         // and make it invisible because Flex is crap at updating click areas otherwise
 309                         if (currentCategorySelector) {
 310                                 currentCategorySelector.removeEventListener("selectedType", changeFeatureType);
 311                                 currentCategorySelector.visible=false;
 312                         }
 313
 314                         // Have we cached the categorySelector for this limitType? If not, create one
 315                         var lt:String=limitType(entity);
 316                         if (!categorySelectors[lt]) {
 317                                 categorySelectors[lt]=new CategorySelector();
 318                                 categorySelectors[lt].setLimitTypes(lt);
 319                         }
 320                         currentCategorySelector=categorySelectors[lt];
 321                         currentCategorySelector.addEventListener("selectedType", changeFeatureType, false, 0, true);
 322
 323                         // Update surrounding icon/text display
 324                         if (feature) {
 325                                 iconImage.source = feature.image;
 326                                 iconText.htmlText = feature.htmlDetails(entity);
 327                                 popupChange.label = feature.name;
 328                                 helpLabel.visible = feature.hasHelpURL();
 329                                 currentCategorySelector.setSelectedFeature(feature);
 330                         } else {
 331                                 iconImage.source = null;
 332                                 popupChange.label = "unknown";
 333                                 helpLabel.visible = false;
 334                                 if (entity==null) {
 335                                         iconText.htmlText = "<i>Nothing selected</i>";
 336                                 } else if (entity.hasTags()) {
 337                                         iconText.htmlText = "<b>Not recognised</b><br/><font size='10pt'>Try looking at the tags under the advanced properties</font>";
 338                                 } else {
 339                                         iconText.htmlText = "<b>No tags set</b><br/><font size='10pt'>Please use the menu below to define what this "+entity.getType()+" is</font>";
 340                                 }
 341                                 currentCategorySelector.setSelectedFeature(null);
 342                         }
 343
 344                         // Set it as the popup, and make sure it's visible
 345                         popupChange.popUp=currentCategorySelector;
 346                         currentCategorySelector.visible=true;
 347       }
 348
 349           private function isMultipleEditable(entities:Array):Boolean {
 350                 for each(var entity:Entity in entities) {
 351                         if(!(entity is Node || entity is Way))
 352                                 return false;
 353                 }
 354                 return true;
 355           }
 356
 357       private function limitType(entity:Entity):String {
 358           if      (entity is Node    ) return "point";
 359           else if (entity is Way     ) return Way(entity).isArea() ? "area" : "line";
 360           else if (entity is Relation) return "relation";
 361           return null;
 362       }
 363
 364       private var tabComponents:Object = {};
 365
 366       private function initialiseEditors():void {
 367           editorStack.removeAllChildren();
 368           if ( selectedEntity == null || feature == null )
 369               return;
 370
 371           var editorBox:VBox = createEditorBox();
 372           editorBox.label = "Basic";
 373           editorStack.addChild(editorBox);
 374
 375           var tabs:Object = {};
 376           tabComponents = {};
 377
 378           for each (var factory:EditorFactory in feature.editors) {
 379               if ( factory.presence.isEditorPresent(factory, selectedEntity, null) ) {
 380                   var editor:DisplayObject = factory.createEditorInstance(selectedEntity);
 381                   if ( editor != null )
 382                       editorBox.addChild(editor);
 383               }
 384               var category:String = factory.category;
 385               if (category!='') {
 386                       var tab:VBox = tabs[category];
 387                       if ( tab == null) {
 388                           tab = createEditorBox();
 389                           tab.label = category;
 390                           editorStack.addChild(tab);
 391                           tabs[category] = tab;
 392                           tabComponents[tab] = [];
 393                       }
 394                       var catEditor:DisplayObject = factory.createEditorInstance(selectedEntity);
 395                       if ( catEditor != null )
 396                           tabComponents[tab].push(catEditor);
 397                       //    tab.addChild(catEditor);
 398               }
 399           }
 400       }
 401
 402       private function createEditorBox():VBox {
 403           var box:VBox = new VBox();
 404           box.percentWidth = 100;
 405           box.percentHeight = 100;
 406           box.styleName = "dndEditorContainer";
 407           return box;
 408       }
 409
 410       private function ensureEditorsPopulated(tab:VBox):void {
 411           var components:Array = tabComponents[tab];
 412           if ( components == null || tab == null || tab.numChildren >= components.length )
 413               return;
 414           for each (var component:DisplayObject in components ) {
 415               tab.addChild(component);
 416           }
 417       }
 418
 419         private function initEditorStackUIs():void {
 420                 editorStackTabNavigator = new SuperTabNavigator();
 421                 editorStackTabNavigator.allowTabSqueezing=false;
 422                 editorStackTabNavigator.minTabWidth=10;
 423                 editorStackTabNavigator.closePolicy="close_never";
 424                 editorStackTabNavigator.scrollSpeed=20;
 425                 editorStackTabNavigator.creationPolicy="auto";
 426                 editorStackTabNavigator.percentWidth=100;
 427                 editorStackTabNavigator.percentHeight=100;
 428                 editorStackTabNavigator.styleName="dndStackTab";
 429                 editorStackTabNavigator.popUpButtonPolicy="off"
 430
 431
 432                 editorStackAccordion = new Accordion();
 433                 editorStackAccordion.percentWidth=100;
 434                 editorStackAccordion.percentHeight=100;
 435                 editorStackAccordion.creationPolicy="auto";
 436                 editorStackAccordion.styleName="dndStackAccordion";
 437
 438                 setEditorStackUI(true);
 439         }
 440
 441         private function setEditorStackUI(isTabbed:Boolean):void {
 442                 var children:Array=[]; var i:uint;
 443
 444                 if (editorStack) {
 445                         // blank existing component
 446                         editorStack.removeEventListener("change",editorStackUIChange);
 447                         editorStack.removeEventListener("updateComplete",editorStackUIUpdate);
 448                         editorStack.removeAllChildren();
 449                         editorContainer.removeChildAt(1);
 450                 }
 451
 452                 // replace with new component
 453                 editorStack = (isTabbed ? editorStackTabNavigator : editorStackAccordion) as Container;
 454                 editorContainer.addChild(editorStack);
 455
 456                 // re-add children and listeners
 457                 initialiseEditors();
 458                 editorStack.addEventListener("change",editorStackUIChange);
 459                 editorStack.addEventListener("updateComplete",editorStackUIUpdate);
 460         }
 461
 462         private function editorStackUIChange(event:Event):void {
 463                 ensureEditorsPopulated(IndexChangedEvent(event).relatedObject as VBox);
 464         }
 465
 466         private function editorStackUIUpdate(event:Event):void {
 467                 if (editorStack is SuperTabNavigator) {
 468                         var e:SuperTabNavigator = editorStack as SuperTabNavigator;
 469                         if (e.selectedIndex<0) { return; }
 470                         for (var i:uint=0; i<e.numChildren; i++) {
 471                                 e.getTabAt(i).selected=(i==e.selectedIndex);
 472                         }
 473                 }
 474         }
 475
 476
 477         public function togglePanel():void {
 478                 if (stack.selectedChild==editorContainer && selectedEntity!=null) {
 479                         stack.selectedChild=advancedContainer;
 480                 } else if (stack.selectedChild!=editorContainer) {
 481                         stack.selectedChild=editorContainer;
 482                 }
 483         }
 484
 485         public function selectAdvancedPanel():void {
 486                 checkAdvanced();
 487                 stack.selectedChild=advancedContainer;
 488         }
 489
 490       private function checkAdvanced():void {
 491           if ( selectedEntity != null )
 492              setupAdvanced(selectedEntity);
 493       }
 494
 495       private var listeningToRelations:Array = [];
 496
 497       private function setupAdvanced(entity:Entity):void {
 498                 if (!advancedTagGrid) advancedContainer.createComponentsFromDescriptors();      // if Flex hasn't created it, force it
 499                 advancedTagGrid.init(entity);
 500
 501                 if ( entity == null ) {
 502                         advancedID.htmlText = "";
 503                 } else {
 504                         var entityText:String = "xx";
 505                         if      ( entity is Node     ) entityText = "Node";
 506                         else if ( entity is Way      ) entityText = "Way";
 507                         else if ( entity is Relation ) entityText = "Relation";
 508                         advancedID.htmlText = entityText+": <b>"+entity.id+"</b>";
 509                 }
 510
 511                 removeRelationListeners();
 512
 513                 if ( entity == null ) {
 514                         relationsGrid.dataProvider = null;
 515                 } else {
 516                         resetRelationsGrid(entity);
 517                         entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
 518                         entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
 519                 }
 520       }
 521
 522           private function setupMultiAdvanced(entity:Entity):void {
 523                 multiAdvancedTagGrid.init(entity);
 524                 resetRelationsGrid(entity);
 525                 entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation, false, 0, true);
 526                 entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation, false, 0, true);
 527       }
 528
 529           public function addNewTag():void {
 530                 if (stack.selectedChild!=advancedContainer) { return; }
 531                 advancedTagGrid.addNewTag();
 532           }
 533
 534       private function addedToRelation(event:RelationMemberEvent):void {
 535          resetRelationsGrid(selectedEntity);
 536       }
 537
 538       private function removedFromRelation(event:RelationMemberEvent):void {
 539          resetRelationsGrid(selectedEntity);
 540       }
 541
 542       private function removeRelationListeners():void {
 543           for each( var rel:Relation in listeningToRelations ) {
 544               rel.removeEventListener(Connection.TAG_CHANGED, relationTagChanged);
 545               rel.removeEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
 546               rel.removeEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
 547           }
 548           listeningToRelations = [];
 549           if (relationsGrid) relationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
 550           if (multiRelationsGrid) multiRelationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
 551       }
 552
 553       private function resetRelationsGrid(entity:Entity):void {
 554           removeRelationListeners();
 555
 556           var instance:DataGrid=relationsGrid;
 557           if (entity is EntityCollection) instance=multiRelationsGrid;
 558           var memberships:Array = entity.getRelationMemberships();
 559           for each (var m:Object in memberships) {
 560               m.relation.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
 561               m.relation.addEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
 562               m.relation.addEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
 563               listeningToRelations.push(m.relation);
 564           }
 565           instance.dataProvider = memberships;
 566           instance.addEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged, false, -100);
 567       }
 568
 569       private function relationRoleChanged(event:DataGridEvent):void {
 570                 if (event.dataField != 'role') { return; }      // shouldn't really happen
 571
 572                 var relations:Array=event.currentTarget.dataProvider.toArray();
 573                 var props:Object=relations[event.rowIndex];
 574
 575                 var relation:Relation=props['relation'];
 576                 var newRole:String=event.itemRenderer.data['role'];
 577
 578                 if (selectedEntity is EntityCollection) {
 579                         for each (var entity:Entity in EntityCollection(selectedEntity).entities) {
 580                                 var indexes:Array=relation.findEntityMemberIndexes(entity);
 581                                 for each (var index:int in indexes) {
 582                                         relation.setMember(index, new RelationMember(entity,newRole), MainUndoStack.getGlobalStack().addAction);
 583                                 }
 584                         }
 585                 } else {
 586                         relation.setMember(props['index'], new RelationMember(selectedEntity,newRole), MainUndoStack.getGlobalStack().addAction);
 587                 }
 588       }
 589
 590       private function relationTagChanged(event:TagEvent):void {
 591           resetRelationsGrid(selectedEntity);
 592       }
 593
 594       private function entityRelationMemberChanged(event:RelationMemberEvent):void {
 595           resetRelationsGrid(selectedEntity);
 596       }
 597
 598       private function checkMembers():void {
 599           if (selectedEntity is Relation) {
 600             setupMembers(selectedEntity as Relation);
 601           }
 602       }
 603
 604       private function setupMembers(rel:Relation):void {
 605           var members:Array = [];
 606           for (var i:int=0 ; i<rel.length; i++) {
 607             var props:Object = {};
 608             var member:RelationMember = rel.getMember(i);
 609             props["id"] = member.entity.id;
 610             props["type"] = member.entity.getType();
 611             props["role"] = member.role;
 612
 613             members.push(props);
 614           }
 615           membersGrid.dataProvider = members;
 616           membersGrid.dataProvider.addEventListener('collectionChange', membersChange);
 617       }
 618
 619       private function membersChange(event:Event):void {
 620           // Dropping all the members and re-adding them isn't exactly optimal
 621           // but is at least robust for any kind of change.
 622           // Figuring out a better way is someone else's FIXME
 623
 624           var conn:Connection = Connection.getConnectionInstance();
 625           var rel:Relation = selectedEntity as Relation
 626           var action:CompositeUndoableAction = new CompositeUndoableAction("Rearrange relation members for "+rel);
 627
 628           // drop members
 629           for (var i:int=rel.length-1 ; i>=0; i--) {
 630             rel.removeMemberByIndex(i, action.push);
 631           }
 632
 633           // add members in new order
 634           for each(var memberObject:Object in membersGrid.dataProvider) {
 635             var e:Entity;
 636             var id:Number = memberObject.id;
 637             if(memberObject.type == 'node') {
 638               e = conn.getNode(id);
 639             } else if (memberObject.type == 'way') {
 640               e = conn.getWay(id);
 641             } else if (memberObject.type == 'relation') {
 642               e = conn.getRelation(id);
 643             }
 644             rel.appendMember(new RelationMember(e, memberObject.role), action.push);
 645           }
 646           MainUndoStack.getGlobalStack().addAction(action);
 647       }
 648
 649       private function editRelation(id:Number):void {
 650           var panel:RelationEditorPanel = RelationEditorPanel(
 651               PopUpManager.createPopUp(Application(Application.application), RelationEditorPanel, true));
 652           panel.setRelation(Connection.getConnectionInstance().getRelation(id));
 653           PopUpManager.centerPopUp(panel);
 654       }
 655
 656         /** Create relation actions menu */
 657
 658         public function createRelationMenu(button:PopUpButton):void {
 659                 var menu:Menu = new Menu();
 660                 var dp:Object = [ {label: "Select all members"},
 661                                                   {label: "Deselect all members"},
 662                                                   {label: "Add selection to this relation", enabled: false} ];
 663                 menu.dataProvider = dp;
 664                 menu.addEventListener("itemClick", selectRelationMenu);
 665                 button.popUp = menu;
 666         }
 667
 668         /** Enable 'add selection to...' entry only if some of the selection isn't in the relation.
 669             Called each time the menu is clicked. */
 670
 671         public function updateRelationMenu(event:Event):void {
 672                 rowData=event.target.parent.data;       // this makes it accessible from selectRelationMenu
 673                 var menu:Menu = Menu(event.target.popUp);
 674                 var enable:Boolean = false;
 675                 if (selectedEntity != null && selectedEntity is EntityCollection) {
 676                         // Enable only if some entities aren't a member of the relation
 677                         enable=!rowData.universal;
 678                 }
 679                 if (enable==menu.dataProvider[2].enabled) return;
 680                 menu.dataProvider[2].enabled=enable;
 681                 menu.invalidateList();
 682         }
 683
 684         /** Do the action selected in the relation actions menu */
 685
 686         public function selectRelationMenu(event:MenuEvent):void {
 687                 var rel:Relation=rowData.relation;
 688                 var entities:Array;
 689                 var controller:EditController=Application.application.theController;
 690                 switch (event.index) {
 691                         case 0: // Select all members
 692                                 entities=selectedEntity.entities.concat(rel.memberEntities);
 693                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return arr.indexOf(e) == i } );      // remove duplicates
 694                                 // ** FIXME: This is a really horrible way of changing the controller state
 695                                 controller.setState(controller.findStateForSelection(entities));
 696                                 break;
 697
 698                         case 1: // Deselect all members
 699                                 entities=selectedEntity.entities;
 700                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return !e.hasParent(rel) } );
 701                                 controller.setState(controller.findStateForSelection(entities));
 702                                 break;
 703
 704                         case 2: // Add selection to this relation
 705                                 var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
 706                                 for each (var entity:Entity in selectedEntity.entities) {
 707                                         if (!entity.hasParent(rel)) {
 708                                                 rel.appendMember(new RelationMember(entity,''), undo.push);
 709                                         }
 710                                 }
 711                                 MainUndoStack.getGlobalStack().addAction(undo);
 712                                 break;
 713                 }
 714         }
 715
 716       private function tagChanged(event:TagEvent):void {
 717           refreshFeatureIcon();
 718       }
 719
 720       public function loadFeatures():void {
 721           mapFeatures = MapFeatures.getInstance();
 722           stack.removeChild(membersVBox); // remove by default, will be added if relation
 723       }
 724
 725       /** Open up a new browser page, showing the help page as defined in Map Features XML file .*/
 726       public function openDescription():void {
 727           if ( feature != null && feature.hasHelpURL() )
 728               navigateToURL(new URLRequest(feature.helpURL), "potlatch_help");
 729       }
 730
 731       /** Open up a new browser page showing OSM's view of the current entity. */
 732       public function openEntityPage():void {
 733           if (selectedEntity != null && selectedEntity.id >= 0) {
 734               // This is slightly hard-coded, but not drastically. The ../s could be changed for string manipulation of the apiBase
 735               var urlBase:String = Connection.getConnectionInstance().apiBase + '../../browse/'
 736               navigateToURL(new URLRequest(urlBase+selectedEntity.getType()+'/'+selectedEntity.id), "potlatch_browse");
 737           }
 738       }
 739
 740       public function addToRelation():void {
 741           new RelationSelectPanel().init(selectedEntity,new Object());
 742       }
 743
 744       private function removeFromRelation(id:Number, index:int=-1):void {
 745                 var rel:Relation=Connection.getConnectionInstance().getRelation(id);
 746                 if (index>-1) {
 747                         rel.removeMemberByIndex(index, MainUndoStack.getGlobalStack().addAction);
 748                 } else if (selectedEntity is EntityCollection) {
 749                         var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
 750                         for each (var e:Entity in EntityCollection(selectedEntity).entities) rel.removeMember(e,undo.push);
 751                         MainUndoStack.getGlobalStack().addAction(undo);
 752                 }
 753       }
 754
 755       public function changeFeatureType(event:Event):void {
 756           if ( selectedEntity == null )
 757               return;
 758
 759           UIComponent.suspendBackgroundProcessing();
 760           var newFeature:Feature = currentCategorySelector.selectedType;
 761           var undoStack:Function = MainUndoStack.getGlobalStack().addAction;
 762           var action:CompositeUndoableAction = new CompositeUndoableAction(
 763                   "Set "+selectedEntity.getType()+" "+selectedEntity.id+" to "+newFeature.name);
 764                   selectedEntity.suspend();
 765
 766           // remove tags from the current feature
 767           if ( feature != null ) {
 768               for each( var oldtag:Object in feature.tags ) {
 769                   selectedEntity.setTag(oldtag["k"], null, action.push);
 770               }
 771           }
 772
 773           // set tags for new feature
 774           if ( newFeature != null ) {
 775               for each( var newtag:Object in newFeature.tags ) {
 776                   selectedEntity.setTag(newtag["k"], newtag["v"], action.push);
 777               }
 778           }
 779
 780                   selectedEntity.resume();
 781           undoStack(action);
 782           popupChange.close();
 783           initialiseEditors();
 784           UIComponent.resumeBackgroundProcessing();
 785       }
 786
 787         private function resizePOIGrid(event:Event):void {
 788                 var rows:Number=event.target.dataProvider.length/event.target.columnCount;
 789                 if (rows!=Math.floor(rows)) { rows=Math.floor(rows+1); }
 790                 event.target.height=rows*(event.target.rowHeight+1);
 791         }
 792   ]]></mx:Script>
 793 </mx:VBox>
 794