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