Merge branch 'master' into history
[potlatch2.git] / 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="new HistoryDialog().init(selectedEntity);">
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   <!-- Background layer selection -->
208
209   <mx:VBox id="backgroundPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
210     <sidepanel:BackgroundPanel id="backgroundPanelContents" width="100%"/>
211   </mx:VBox>
212
213 </mx:ViewStack>
214
215   <mx:Script><![CDATA[
216       import net.systemeD.halcyon.connection.*;
217       import net.systemeD.halcyon.MapPaint;
218       import net.systemeD.potlatch2.mapfeatures.*;
219       import net.systemeD.potlatch2.history.HistoryDialog;
220       import net.systemeD.potlatch2.utils.*;
221
222       import mx.collections.*;
223       import mx.containers.*;
224       import mx.events.*;
225       import mx.core.*;
226       import mx.managers.PopUpManager;
227       import mx.controls.Menu;
228       import mx.controls.Alert;
229       import flash.geom.Point;
230       import flash.net.*;
231       import mx.events.DragEvent;
232       import mx.managers.DragManager;
233       import mx.core.DragSource;
234       import mx.controls.TabBar;
235       import flexlib.containers.SuperTabNavigator;
236
237       [Bindable]
238       public var dndPrompt:String="Add new points by dragging them onto the map";
239
240       private var editorStackTabNavigator:SuperTabNavigator;
241       private var editorStackAccordion:Accordion;
242       [Bindable] private var editorStack:Container;
243
244       public var mapFeatures:MapFeatures;
245       private var selectedEntity:Entity;
246       private var connection:Connection;
247       private var currentCategorySelector:CategorySelector;
248       private var categorySelectors:Object = {};        // hash of categorySelectors for each limitType
249       private var feature:Feature = null;
250
251       private var rowData:Object;               // relation membership reference, needed so it's accessible from relation actions menu
252
253           public function setEntity(entities:Array, layer:MapPaint=null):void {
254                 UIComponent.suspendBackgroundProcessing();
255                 connection=null;
256
257                 var firstSelected:Entity=null;
258                 if (entities.length==1) { firstSelected=entities[0]; }
259
260                 if (selectedEntity!=firstSelected && selectedEntity!=null) {
261                         selectedEntity.removeEventListener(Connection.TAG_CHANGED, tagChanged);
262                         selectedEntity.removeEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
263                         selectedEntity.removeEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
264                 }
265
266                 if (entities.length==0) {
267                         // Nothing selected, so show drag-and-drop panel
268                         sidebar.selectedChild = dndPanel;
269
270                 } else if (entities.length==1) {
271                         // Single entity selected, so show tag panel
272                         selectedEntity=firstSelected;
273                         connection=firstSelected.connection;
274                         if (selectedEntity!=null) { selectedEntity.addEventListener(Connection.TAG_CHANGED, tagChanged); }
275                         if (advancedID!=null) { setupAdvanced(firstSelected); }
276                         if (firstSelected is Relation) { stack.addChild(membersVBox); }
277             if (selectedEntity is Marker && connection is BugConnection) {
278               bugPanelContents.init(selectedEntity, BugConnection(connection));
279               sidebar.selectedChild = bugPanel;
280             } else if (selectedEntity is Marker) {
281               markerPanelContents.init(selectedEntity, layer);
282               sidebar.selectedChild = markerPanel;
283             } else if (connection is SnapshotConnection) {
284               backgroundPanelContents.init(selectedEntity, layer);
285               sidebar.selectedChild = backgroundPanel;
286             } else {
287               refreshFeatureIcon();
288               initialiseEditors();
289               sidebar.selectedChild = tagsPanel;
290             }
291
292                 } else if(isMultipleEditable(entities)) {
293                         selectedEntity = new EntityCollection(entities);
294                         selectedEntity.addEventListener(Connection.TAG_CHANGED, tagChanged);
295             sidebar.selectedChild = multiplePanel;
296                         setupMultiAdvanced(selectedEntity);
297                         connection=entities[0].connection;
298                         
299                 } else {
300                         //The selection contains elements which can't be edited all together.
301                         sidebar.selectedChild = multipleInvalidPanel;
302                 }
303                 UIComponent.resumeBackgroundProcessing();
304       }
305
306       private function refreshFeatureIcon():void {
307           var oldFeature:Feature = feature;
308           feature = selectedEntity == null ? null : mapFeatures.findMatchingFeature(selectedEntity);
309           if ( feature != oldFeature ) {
310               if ( oldFeature != null )
311                   oldFeature.removeEventListener("imageChanged", featureImageChanged);
312               if ( feature != null )
313                   feature.addEventListener("imageChanged", featureImageChanged);
314           }
315           setCategorySelector(selectedEntity, feature);
316       }
317
318       private function featureImageChanged(event:Event):void {
319           setCategorySelector(selectedEntity, feature);
320       }
321
322       /** Set the icon, categorySelector and help text for the current entity. */
323       private function setCategorySelector(entity:Entity, feature:Feature):void {
324                         // Remove the "user has selected something" event listener from previous categorySelector,
325                         // and make it invisible because Flex is crap at updating click areas otherwise
326                         if (currentCategorySelector) { 
327                                 currentCategorySelector.removeEventListener("selectedType", changeFeatureType);
328                                 currentCategorySelector.visible=false;
329                         }
330                         
331                         // Have we cached the categorySelector for this limitType? If not, create one
332                         var lt:String=limitType(entity);
333                         if (!categorySelectors[lt]) {
334                                 categorySelectors[lt]=new CategorySelector();
335                                 categorySelectors[lt].setLimitTypes(lt);
336                         }
337                         currentCategorySelector=categorySelectors[lt];
338                         currentCategorySelector.addEventListener("selectedType", changeFeatureType, false, 0, true);
339
340                         // Update surrounding icon/text display
341                         if (feature) {
342                                 iconImage.source = feature.image;
343                                 iconText.htmlText = feature.htmlDetails(entity);
344                                 popupChange.label = feature.name;
345                                 helpLabel.visible = feature.hasHelpURL();
346                                 currentCategorySelector.setSelectedFeature(feature);
347                         } else {
348                                 iconImage.source = null;
349                                 popupChange.label = "unknown";
350                                 helpLabel.visible = false;
351                                 if (entity==null) {
352                                         iconText.htmlText = "<i>Nothing selected</i>";
353                                 } else if (entity.hasTags()) {
354                                         iconText.htmlText = "<b>Not recognised</b><br/><font size='10pt'>Try looking at the tags under the advanced properties</font>";
355                                 } else {
356                                         iconText.htmlText = "<b>No tags set</b><br/><font size='10pt'>Please use the menu below to define what this "+entity.getType()+" is</font>";
357                                 }
358                                 currentCategorySelector.setSelectedFeature(null);
359                         }
360
361                         // Set it as the popup, and make sure it's visible
362                         popupChange.popUp=currentCategorySelector;
363                         currentCategorySelector.visible=true;
364       }
365
366           private function isMultipleEditable(entities:Array):Boolean {
367                 for each(var entity:Entity in entities) {
368                         if(!(entity is Node || entity is Way))
369                                 return false;
370                 }
371                 return true;
372           }
373
374       private function limitType(entity:Entity):String {
375           if      (entity is Node    ) return "point";
376           else if (entity is Way     ) return Way(entity).isArea() ? "area" : "line";
377           else if (entity is Relation) return "relation";
378           return null;
379       }
380
381       private var tabComponents:Object = {};
382
383       private function initialiseEditors():void {
384           // reset tab to 0 to work around TabNavigator bug (#3444)
385           if (editorStack is TabNavigator) {
386               try {
387                   var tabBar:TabBar=TabBar(TabNavigator(editorStack).getTabAt(0).parent);
388                   tabBar.selectedIndex=0;
389               } catch(errObject:Error) {}
390           }
391
392           editorStack.removeAllChildren();
393           if ( selectedEntity == null || feature == null )
394               return;
395
396           var editorBox:VBox = createEditorBox();
397           editorBox.label = "Basic";
398           editorStack.addChild(editorBox);
399
400           var tabs:Object = {};
401           tabComponents = {};
402
403           for each (var factory:EditorFactory in feature.editors) {
404               if ( factory.presence.isEditorPresent(factory, selectedEntity, null) ) {
405                   var editor:DisplayObject = factory.createEditorInstance(selectedEntity);
406                   if ( editor != null )
407                       editorBox.addChild(editor);
408               }
409               var category:String = factory.category;
410               if (category!='') {
411                       var tab:VBox = tabs[category];
412                       if ( tab == null) {
413                           tab = createEditorBox();
414                           tab.label = category;
415                           editorStack.addChild(tab);
416                           tabs[category] = tab;
417                           tabComponents[tab] = [];
418                       }
419                       var catEditor:DisplayObject = factory.createEditorInstance(selectedEntity);
420                       if ( catEditor != null )
421                           tabComponents[tab].push(catEditor);
422                       //    tab.addChild(catEditor);
423               }
424           }
425       }
426
427       private function createEditorBox():VBox {
428           var box:VBox = new VBox();
429           box.percentWidth = 100;
430           box.percentHeight = 100;
431           box.styleName = "dndEditorContainer";
432           return box;
433       }
434
435       private function ensureEditorsPopulated(tab:VBox):void {
436           var components:Array = tabComponents[tab];
437           if ( components == null || tab == null || tab.numChildren >= components.length )
438               return;
439           for each (var component:DisplayObject in components ) {
440               tab.addChild(component);
441           }
442       }
443
444         private function initEditorStackUIs():void {
445                 editorStackTabNavigator = new SuperTabNavigator();
446                 editorStackTabNavigator.allowTabSqueezing=false;
447                 editorStackTabNavigator.minTabWidth=10;
448                 editorStackTabNavigator.closePolicy="close_never";
449                 editorStackTabNavigator.scrollSpeed=20;
450                 editorStackTabNavigator.creationPolicy="auto";
451                 editorStackTabNavigator.percentWidth=100;
452                 editorStackTabNavigator.percentHeight=100;
453                 editorStackTabNavigator.styleName="dndStackTab";
454                 editorStackTabNavigator.popUpButtonPolicy="off"
455
456
457                 editorStackAccordion = new Accordion();
458                 editorStackAccordion.percentWidth=100;
459                 editorStackAccordion.percentHeight=100;
460                 editorStackAccordion.creationPolicy="auto";
461                 editorStackAccordion.styleName="dndStackAccordion";
462
463                 setEditorStackUI(true);
464         }
465
466         private function setEditorStackUI(isTabbed:Boolean):void {
467                 var children:Array=[]; var i:uint;
468
469                 if (editorStack) {
470                         // blank existing component
471                         editorStack.removeEventListener("change",editorStackUIChange);
472                         editorStack.removeEventListener("updateComplete",editorStackUIUpdate);
473                         editorStack.removeAllChildren();
474                         editorContainer.removeChildAt(1);
475                 }
476
477                 // replace with new component
478                 editorStack = (isTabbed ? editorStackTabNavigator : editorStackAccordion) as Container;
479                 editorContainer.addChild(editorStack);
480
481                 // re-add children and listeners
482                 initialiseEditors();
483                 editorStack.addEventListener("change",editorStackUIChange);
484                 editorStack.addEventListener("updateComplete",editorStackUIUpdate);
485         }
486
487         private function editorStackUIChange(event:Event):void {
488                 ensureEditorsPopulated(IndexChangedEvent(event).relatedObject as VBox);
489         }
490
491         private function editorStackUIUpdate(event:Event):void {
492                 if (editorStack is SuperTabNavigator) {
493                         var e:SuperTabNavigator = editorStack as SuperTabNavigator;
494                         if (e.selectedIndex<0) { return; }
495                         for (var i:uint=0; i<e.numChildren; i++) {
496                                 e.getTabAt(i).selected=(i==e.selectedIndex);
497                         }
498                 }
499         }
500
501
502         public function togglePanel():void {
503                 if (stack.selectedChild==editorContainer && selectedEntity!=null) {
504                         stack.selectedChild=advancedContainer;
505                 } else if (stack.selectedChild!=editorContainer) {
506                         stack.selectedChild=editorContainer;
507                 }
508         }
509
510         public function selectAdvancedPanel():void {
511                 checkAdvanced();
512                 stack.selectedChild=advancedContainer;
513         }
514
515       private function checkAdvanced():void {
516           if ( selectedEntity != null )
517              setupAdvanced(selectedEntity);
518       }
519
520       private var listeningToRelations:Array = [];
521
522       private function setupAdvanced(entity:Entity):void {
523                 if (!advancedTagGrid) advancedContainer.createComponentsFromDescriptors();      // if Flex hasn't created it, force it
524                 advancedTagGrid.init(entity);
525
526                 if ( entity == null ) {
527                         advancedID.htmlText = "";
528                 } else {
529                         var entityText:String = "xx";
530                         if      ( entity is Node     ) entityText = "Node";
531                         else if ( entity is Way      ) entityText = "Way";
532                         else if ( entity is Relation ) entityText = "Relation";
533                         advancedID.htmlText = entityText+": <b>"+entity.id+"</b>";
534                 }
535
536                 removeRelationListeners();
537
538                 if ( entity == null ) {
539                         relationsGrid.dataProvider = null;
540                 } else {
541                         resetRelationsGrid(entity);
542                         entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
543                         entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
544                 }
545       }
546
547           private function setupMultiAdvanced(entity:Entity):void {
548                 multiAdvancedTagGrid.init(entity);
549                 resetRelationsGrid(entity);
550                 entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation, false, 0, true);
551                 entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation, false, 0, true);
552       }
553
554           public function addNewTag():void {
555                 if (stack.selectedChild!=advancedContainer) { return; }
556                 advancedTagGrid.addNewTag();
557           }
558
559       private function addedToRelation(event:RelationMemberEvent):void {
560          resetRelationsGrid(selectedEntity);
561       }
562
563       private function removedFromRelation(event:RelationMemberEvent):void {
564          resetRelationsGrid(selectedEntity);
565       }
566
567       private function removeRelationListeners():void {
568           for each( var rel:Relation in listeningToRelations ) {
569               rel.removeEventListener(Connection.TAG_CHANGED, relationTagChanged);
570               rel.removeEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
571               rel.removeEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
572           }
573           listeningToRelations = [];
574           if (relationsGrid) relationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
575           if (multiRelationsGrid) multiRelationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
576       }
577
578       private function resetRelationsGrid(entity:Entity):void {
579           removeRelationListeners();
580
581           var instance:DataGrid=relationsGrid;
582           if (entity is EntityCollection) instance=multiRelationsGrid;
583           var memberships:Array = entity.getRelationMemberships();
584           for each (var m:Object in memberships) {
585               m.relation.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
586               m.relation.addEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
587               m.relation.addEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
588               listeningToRelations.push(m.relation);
589           }
590           instance.dataProvider = memberships;
591           instance.addEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged, false, -100);
592       }
593
594       private function relationRoleChanged(event:DataGridEvent):void {
595                 if (event.dataField != 'role') { return; }      // shouldn't really happen
596
597                 var relations:Array=event.currentTarget.dataProvider.toArray();
598                 var props:Object=relations[event.rowIndex];
599
600                 var relation:Relation=props['relation'];
601                 var newRole:String=event.itemRenderer.data['role'];
602
603                 if (selectedEntity is EntityCollection) {
604                         for each (var entity:Entity in EntityCollection(selectedEntity).entities) {
605                                 var indexes:Array=relation.findEntityMemberIndexes(entity);
606                                 for each (var index:int in indexes) {
607                                         relation.setMember(index, new RelationMember(entity,newRole), MainUndoStack.getGlobalStack().addAction);
608                                 }
609                         }
610                 } else {
611                         relation.setMember(props['index'], new RelationMember(selectedEntity,newRole), MainUndoStack.getGlobalStack().addAction);
612                 }
613       }
614
615       private function relationTagChanged(event:TagEvent):void {
616           resetRelationsGrid(selectedEntity);
617       }
618
619       private function entityRelationMemberChanged(event:RelationMemberEvent):void {
620           resetRelationsGrid(selectedEntity);
621       }
622
623       private function checkMembers():void {
624           if (selectedEntity is Relation) {
625             setupMembers(selectedEntity as Relation);
626           }
627       }
628
629       private function setupMembers(rel:Relation):void {
630           var members:Array = [];
631           for (var i:int=0 ; i<rel.length; i++) {
632             var props:Object = {};
633             var member:RelationMember = rel.getMember(i);
634             props["id"] = member.entity.id;
635             props["type"] = member.entity.getType();
636             props["role"] = member.role;
637
638             members.push(props);
639           }
640           membersGrid.dataProvider = members;
641           membersGrid.dataProvider.addEventListener('collectionChange', membersChange);
642       }
643
644       private function membersChange(event:Event):void {
645           // Dropping all the members and re-adding them isn't exactly optimal
646           // but is at least robust for any kind of change.
647           // Figuring out a better way is someone else's FIXME
648
649           var rel:Relation = selectedEntity as Relation;
650           var action:CompositeUndoableAction = new CompositeUndoableAction("Rearrange relation members for "+rel);
651
652           // drop members
653           for (var i:int=rel.length-1 ; i>=0; i--) {
654             rel.removeMemberByIndex(i, action.push);
655           }
656
657           // add members in new order
658           for each(var memberObject:Object in membersGrid.dataProvider) {
659             var e:Entity;
660             var id:Number = memberObject.id;
661                         switch (memberObject.type) {
662                                 case 'node':            e = connection.getNode(id); break;
663                 case 'way':                     e = connection.getWay(id); break;
664                                 case 'relation':        e = connection.getRelation(id); break;
665             }
666             rel.appendMember(new RelationMember(e, memberObject.role), action.push);
667           }
668           MainUndoStack.getGlobalStack().addAction(action);
669       }
670
671       private function editRelation(id:Number):void {
672           var panel:RelationEditorPanel = RelationEditorPanel(
673               PopUpManager.createPopUp(Application(Application.application), RelationEditorPanel, true));
674           panel.setRelation(connection.getRelation(id));
675           PopUpManager.centerPopUp(panel);
676       }
677
678         /** Create relation actions menu */
679
680         public function createRelationMenu(button:PopUpButton):void {
681                 var menu:Menu = new Menu(); 
682                 var dp:Object = [ {label: "Select all members"}, 
683                                                   {label: "Deselect all members"}, 
684                                                   {label: "Add selection to this relation", enabled: false},
685                                                   {label: "Delete relation"} ]; 
686                 menu.dataProvider = dp; 
687                 menu.addEventListener("itemClick", selectRelationMenu); 
688                 button.popUp = menu;
689         }
690
691         /** Enable 'add selection to...' entry only if some of the selection isn't in the relation.
692             Called each time the menu is clicked. */
693         
694         public function updateRelationMenu(event:Event):void {
695                 rowData=event.target.parent.data;       // this makes it accessible from selectRelationMenu
696                 var menu:Menu = Menu(event.target.popUp);
697                 var enable:Boolean = false;
698                 if (selectedEntity != null && selectedEntity is EntityCollection) {
699                         // Enable only if some entities aren't a member of the relation
700                         enable=!rowData.universal;
701                 }
702                 if (enable==menu.dataProvider[2].enabled) return;
703                 menu.dataProvider[2].enabled=enable;
704                 menu.invalidateList();
705         }
706
707         /** Do the action selected in the relation actions menu */
708
709         public function selectRelationMenu(event:MenuEvent):void {
710                 var rel:Relation=rowData.relation;
711                 var entities:Array;
712                 var controller:EditController=Application.application.theController;
713                 switch (event.index) {
714                         case 0: // Select all members
715                                 entities=selectedEntity.entities.concat(rel.memberEntities);
716                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return arr.indexOf(e) == i } );      // remove duplicates
717                                 // ** FIXME: This is a really horrible way of changing the controller state
718                                 controller.setState(controller.findStateForSelection(entities));
719                                 break;
720
721                         case 1: // Deselect all members
722                                 entities=selectedEntity.entities;
723                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return !e.hasParent(rel) } );
724                                 controller.setState(controller.findStateForSelection(entities));
725                                 break;
726
727                         case 2: // Add selection to this relation
728                                 var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
729                                 for each (var entity:Entity in selectedEntity.entities) {
730                                         if (!entity.hasParent(rel)) {
731                                                 rel.appendMember(new RelationMember(entity,''), undo.push);
732                                         }
733                                 }
734                                 MainUndoStack.getGlobalStack().addAction(undo);
735                                 break;
736                         
737                         case 3: // Delete relation
738                                 Alert.show("Do you really want to delete the relation?","Are you sure?",Alert.YES | Alert.CANCEL,null,
739                                         function(event:CloseEvent):void { 
740                                                 if (event.detail==Alert.CANCEL) return;
741                                                 rel.remove(MainUndoStack.getGlobalStack().addAction);
742                                         } );
743                                 break;
744                 }
745         }
746
747       private function tagChanged(event:TagEvent):void {
748           refreshFeatureIcon();
749       }
750
751       public function loadFeatures():void {
752           mapFeatures = MapFeatures.getInstance();
753           stack.removeChild(membersVBox); // remove by default, will be added if relation
754       }
755
756       /** Open up a new browser page, showing the help page as defined in Map Features XML file .*/
757       public function openDescription():void {
758           if ( feature != null && feature.hasHelpURL() )
759               navigateToURL(new URLRequest(feature.helpURL), "potlatch_help");
760       }
761
762       public function addToRelation():void {
763           new RelationSelectPanel().init(selectedEntity,new Object());
764       }
765
766       private function removeFromRelation(id:Number, index:int=-1):void {
767                 var rel:Relation=connection.getRelation(id);
768                 if (index>-1) {
769                         rel.removeMemberByIndex(index, MainUndoStack.getGlobalStack().addAction);
770                 } else if (selectedEntity is EntityCollection) {
771                         var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
772                         for each (var e:Entity in EntityCollection(selectedEntity).entities) rel.removeMember(e,undo.push);
773                         MainUndoStack.getGlobalStack().addAction(undo);
774                 }
775       }
776
777       public function changeFeatureType(event:Event):void {
778           if ( selectedEntity == null )
779               return;
780
781           UIComponent.suspendBackgroundProcessing();
782           var newFeature:Feature = currentCategorySelector.selectedType;
783           var undoStack:Function = MainUndoStack.getGlobalStack().addAction;
784           var action:CompositeUndoableAction = new CompositeUndoableAction(
785                   "Set "+selectedEntity.getType()+" "+selectedEntity.id+" to "+newFeature.name);
786                   selectedEntity.suspend();
787
788           // remove tags from the current feature
789           if ( feature != null ) {
790               for each( var oldtag:Object in feature.tags ) {
791                   selectedEntity.setTag(oldtag["k"], null, action.push);
792               }
793           }
794
795           // set tags for new feature
796           if ( newFeature != null ) {
797               for each( var newtag:Object in newFeature.tags ) {
798                   selectedEntity.setTag(newtag["k"], newtag["v"], action.push);
799               }
800           }
801
802                   selectedEntity.resume();
803           undoStack(action);
804           popupChange.close();
805           initialiseEditors();
806           UIComponent.resumeBackgroundProcessing();
807       }
808
809         private function resizePOIGrid(event:Event):void {
810                 var rows:Number=event.target.dataProvider.length/event.target.columnCount;
811                 if (rows!=Math.floor(rows)) { rows=Math.floor(rows+1); }
812                 event.target.height=rows*(event.target.rowHeight+1);
813         }
814   ]]></mx:Script>
815 </mx:VBox>
816