Merge remote-tracking branch 'gravitystorm/icons' into staging
[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                                 currentCategorySelector.setSelectedFeature(null);
341                         }
342
343                         // Set it as the popup, and make sure it's visible
344                         popupChange.popUp=currentCategorySelector;
345                         currentCategorySelector.visible=true;
346       }
347
348           private function isMultipleEditable(entities:Array):Boolean {
349                 for each(var entity:Entity in entities) {
350                         if(!(entity is Node || entity is Way))
351                                 return false;
352                 }
353                 return true;
354           }
355
356       private function limitType(entity:Entity):String {
357           if      (entity is Node    ) return "point";
358           else if (entity is Way     ) return Way(entity).isArea() ? "area" : "line";
359           else if (entity is Relation) return "relation";
360           return null;
361       }
362
363       private var tabComponents:Object = {};
364
365       private function initialiseEditors():void {
366           editorStack.removeAllChildren();
367           if ( selectedEntity == null || feature == null )
368               return;
369
370           var editorBox:VBox = createEditorBox();
371           editorBox.label = "Basic";
372           editorStack.addChild(editorBox);
373
374           var tabs:Object = {};
375           tabComponents = {};
376
377           for each (var factory:EditorFactory in feature.editors) {
378               if ( factory.presence.isEditorPresent(factory, selectedEntity, null) ) {
379                   var editor:DisplayObject = factory.createEditorInstance(selectedEntity);
380                   if ( editor != null )
381                       editorBox.addChild(editor);
382               }
383               var category:String = factory.category;
384               if (category!='') {
385                       var tab:VBox = tabs[category];
386                       if ( tab == null) {
387                           tab = createEditorBox();
388                           tab.label = category;
389                           editorStack.addChild(tab);
390                           tabs[category] = tab;
391                           tabComponents[tab] = [];
392                       }
393                       var catEditor:DisplayObject = factory.createEditorInstance(selectedEntity);
394                       if ( catEditor != null )
395                           tabComponents[tab].push(catEditor);
396                       //    tab.addChild(catEditor);
397               }
398           }
399       }
400
401       private function createEditorBox():VBox {
402           var box:VBox = new VBox();
403           box.percentWidth = 100;
404           box.percentHeight = 100;
405           box.styleName = "dndEditorContainer";
406           return box;
407       }
408
409       private function ensureEditorsPopulated(tab:VBox):void {
410           var components:Array = tabComponents[tab];
411           if ( components == null || tab == null || tab.numChildren >= components.length )
412               return;
413           for each (var component:DisplayObject in components ) {
414               tab.addChild(component);
415           }
416       }
417
418         private function initEditorStackUIs():void {
419                 editorStackTabNavigator = new SuperTabNavigator();
420                 editorStackTabNavigator.allowTabSqueezing=false;
421                 editorStackTabNavigator.minTabWidth=10;
422                 editorStackTabNavigator.closePolicy="close_never";
423                 editorStackTabNavigator.scrollSpeed=20;
424                 editorStackTabNavigator.creationPolicy="auto";
425                 editorStackTabNavigator.percentWidth=100;
426                 editorStackTabNavigator.percentHeight=100;
427                 editorStackTabNavigator.styleName="dndStackTab";
428                 editorStackTabNavigator.popUpButtonPolicy="off"
429
430
431                 editorStackAccordion = new Accordion();
432                 editorStackAccordion.percentWidth=100;
433                 editorStackAccordion.percentHeight=100;
434                 editorStackAccordion.creationPolicy="auto";
435                 editorStackAccordion.styleName="dndStackAccordion";
436
437                 setEditorStackUI(true);
438         }
439
440         private function setEditorStackUI(isTabbed:Boolean):void {
441                 var children:Array=[]; var i:uint;
442
443                 if (editorStack) {
444                         // blank existing component
445                         editorStack.removeEventListener("change",editorStackUIChange);
446                         editorStack.removeEventListener("updateComplete",editorStackUIUpdate);
447                         editorStack.removeAllChildren();
448                         editorContainer.removeChildAt(1);
449                 }
450
451                 // replace with new component
452                 editorStack = (isTabbed ? editorStackTabNavigator : editorStackAccordion) as Container;
453                 editorContainer.addChild(editorStack);
454
455                 // re-add children and listeners
456                 initialiseEditors();
457                 editorStack.addEventListener("change",editorStackUIChange);
458                 editorStack.addEventListener("updateComplete",editorStackUIUpdate);
459         }
460
461         private function editorStackUIChange(event:Event):void {
462                 ensureEditorsPopulated(IndexChangedEvent(event).relatedObject as VBox);
463         }
464
465         private function editorStackUIUpdate(event:Event):void {
466                 if (editorStack is SuperTabNavigator) {
467                         var e:SuperTabNavigator = editorStack as SuperTabNavigator;
468                         if (e.selectedIndex<0) { return; }
469                         for (var i:uint=0; i<e.numChildren; i++) {
470                                 e.getTabAt(i).selected=(i==e.selectedIndex);
471                         }
472                 }
473         }
474
475
476         public function togglePanel():void {
477                 if (stack.selectedChild==editorContainer && selectedEntity!=null) {
478                         stack.selectedChild=advancedContainer;
479                 } else if (stack.selectedChild!=editorContainer) {
480                         stack.selectedChild=editorContainer;
481                 }
482         }
483
484         public function selectAdvancedPanel():void {
485                 checkAdvanced();
486                 stack.selectedChild=advancedContainer;
487         }
488
489       private function checkAdvanced():void {
490           if ( selectedEntity != null )
491              setupAdvanced(selectedEntity);
492       }
493
494       private var listeningToRelations:Array = [];
495
496       private function setupAdvanced(entity:Entity):void {
497                 if (!advancedTagGrid) advancedContainer.createComponentsFromDescriptors();      // if Flex hasn't created it, force it
498                 advancedTagGrid.init(entity);
499
500                 if ( entity == null ) {
501                         advancedID.htmlText = "";
502                 } else {
503                         var entityText:String = "xx";
504                         if      ( entity is Node     ) entityText = "Node";
505                         else if ( entity is Way      ) entityText = "Way";
506                         else if ( entity is Relation ) entityText = "Relation";
507                         advancedID.htmlText = entityText+": <b>"+entity.id+"</b>";
508                 }
509
510                 removeRelationListeners();
511
512                 if ( entity == null ) {
513                         relationsGrid.dataProvider = null;
514                 } else {
515                         resetRelationsGrid(entity);
516                         entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
517                         entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
518                 }
519       }
520
521           private function setupMultiAdvanced(entity:Entity):void {
522                 multiAdvancedTagGrid.init(entity);
523                 resetRelationsGrid(entity);
524                 entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation, false, 0, true);
525                 entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation, false, 0, true);
526       }
527
528           public function addNewTag():void {
529                 if (stack.selectedChild!=advancedContainer) { return; }
530                 advancedTagGrid.addNewTag();
531           }
532
533       private function addedToRelation(event:RelationMemberEvent):void {
534          resetRelationsGrid(selectedEntity);
535       }
536
537       private function removedFromRelation(event:RelationMemberEvent):void {
538          resetRelationsGrid(selectedEntity);
539       }
540
541       private function removeRelationListeners():void {
542           for each( var rel:Relation in listeningToRelations ) {
543               rel.removeEventListener(Connection.TAG_CHANGED, relationTagChanged);
544               rel.removeEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
545               rel.removeEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
546           }
547           listeningToRelations = [];
548           if (relationsGrid) relationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
549           if (multiRelationsGrid) multiRelationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
550       }
551
552       private function resetRelationsGrid(entity:Entity):void {
553           removeRelationListeners();
554
555           var instance:DataGrid=relationsGrid;
556           if (entity is EntityCollection) instance=multiRelationsGrid;
557           var memberships:Array = entity.getRelationMemberships();
558           for each (var m:Object in memberships) {
559               m.relation.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
560               m.relation.addEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
561               m.relation.addEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
562               listeningToRelations.push(m.relation);
563           }
564           instance.dataProvider = memberships;
565           instance.addEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged, false, -100);
566       }
567
568       private function relationRoleChanged(event:DataGridEvent):void {
569                 if (event.dataField != 'role') { return; }      // shouldn't really happen
570
571                 var relations:Array=event.currentTarget.dataProvider.toArray();
572                 var props:Object=relations[event.rowIndex];
573
574                 var relation:Relation=props['relation'];
575                 var newRole:String=event.itemRenderer.data['role'];
576
577                 if (selectedEntity is EntityCollection) {
578                         for each (var entity:Entity in EntityCollection(selectedEntity).entities) {
579                                 var indexes:Array=relation.findEntityMemberIndexes(entity);
580                                 for each (var index:int in indexes) {
581                                         relation.setMember(index, new RelationMember(entity,newRole), MainUndoStack.getGlobalStack().addAction);
582                                 }
583                         }
584                 } else {
585                         relation.setMember(props['index'], new RelationMember(selectedEntity,newRole), MainUndoStack.getGlobalStack().addAction);
586                 }
587       }
588
589       private function relationTagChanged(event:TagEvent):void {
590           resetRelationsGrid(selectedEntity);
591       }
592
593       private function entityRelationMemberChanged(event:RelationMemberEvent):void {
594           resetRelationsGrid(selectedEntity);
595       }
596
597       private function checkMembers():void {
598           if (selectedEntity is Relation) {
599             setupMembers(selectedEntity as Relation);
600           }
601       }
602
603       private function setupMembers(rel:Relation):void {
604           var members:Array = [];
605           for (var i:int=0 ; i<rel.length; i++) {
606             var props:Object = {};
607             var member:RelationMember = rel.getMember(i);
608             props["id"] = member.entity.id;
609             props["type"] = member.entity.getType();
610             props["role"] = member.role;
611
612             members.push(props);
613           }
614           membersGrid.dataProvider = members;
615           membersGrid.dataProvider.addEventListener('collectionChange', membersChange);
616       }
617
618       private function membersChange(event:Event):void {
619           // Dropping all the members and re-adding them isn't exactly optimal
620           // but is at least robust for any kind of change.
621           // Figuring out a better way is someone else's FIXME
622
623           var conn:Connection = Connection.getConnectionInstance();
624           var rel:Relation = selectedEntity as Relation
625           var action:CompositeUndoableAction = new CompositeUndoableAction("Rearrange relation members for "+rel);
626
627           // drop members
628           for (var i:int=rel.length-1 ; i>=0; i--) {
629             rel.removeMemberByIndex(i, action.push);
630           }
631
632           // add members in new order
633           for each(var memberObject:Object in membersGrid.dataProvider) {
634             var e:Entity;
635             var id:Number = memberObject.id;
636             if(memberObject.type == 'node') {
637               e = conn.getNode(id);
638             } else if (memberObject.type == 'way') {
639               e = conn.getWay(id);
640             } else if (memberObject.type == 'relation') {
641               e = conn.getRelation(id);
642             }
643             rel.appendMember(new RelationMember(e, memberObject.role), action.push);
644           }
645           MainUndoStack.getGlobalStack().addAction(action);
646       }
647
648       private function editRelation(id:Number):void {
649           var panel:RelationEditorPanel = RelationEditorPanel(
650               PopUpManager.createPopUp(Application(Application.application), RelationEditorPanel, true));
651           panel.setRelation(Connection.getConnectionInstance().getRelation(id));
652           PopUpManager.centerPopUp(panel);
653       }
654
655         /** Create relation actions menu */
656
657         public function createRelationMenu(button:PopUpButton):void {
658                 var menu:Menu = new Menu(); 
659                 var dp:Object = [ {label: "Select all members"}, 
660                                                   {label: "Deselect all members"}, 
661                                                   {label: "Add selection to this relation", enabled: false} ]; 
662                 menu.dataProvider = dp; 
663                 menu.addEventListener("itemClick", selectRelationMenu); 
664                 button.popUp = menu;
665         }
666
667         /** Enable 'add selection to...' entry only if some of the selection isn't in the relation.
668             Called each time the menu is clicked. */
669         
670         public function updateRelationMenu(event:Event):void {
671                 rowData=event.target.parent.data;       // this makes it accessible from selectRelationMenu
672                 var menu:Menu = Menu(event.target.popUp);
673                 var enable:Boolean = false;
674                 if (selectedEntity != null && selectedEntity is EntityCollection) {
675                         // Enable only if some entities aren't a member of the relation
676                         enable=!rowData.universal;
677                 }
678                 if (enable==menu.dataProvider[2].enabled) return;
679                 menu.dataProvider[2].enabled=enable;
680                 menu.invalidateList();
681         }
682
683         /** Do the action selected in the relation actions menu */
684
685         public function selectRelationMenu(event:MenuEvent):void {
686                 var rel:Relation=rowData.relation;
687                 var entities:Array;
688                 var controller:EditController=Application.application.theController;
689                 switch (event.index) {
690                         case 0: // Select all members
691                                 entities=selectedEntity.entities.concat(rel.memberEntities);
692                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return arr.indexOf(e) == i } );      // remove duplicates
693                                 // ** FIXME: This is a really horrible way of changing the controller state
694                                 controller.setState(controller.findStateForSelection(entities));
695                                 break;
696
697                         case 1: // Deselect all members
698                                 entities=selectedEntity.entities;
699                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return !e.hasParent(rel) } );
700                                 controller.setState(controller.findStateForSelection(entities));
701                                 break;
702
703                         case 2: // Add selection to this relation
704                                 var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
705                                 for each (var entity:Entity in selectedEntity.entities) {
706                                         if (!entity.hasParent(rel)) {
707                                                 rel.appendMember(new RelationMember(entity,''), undo.push);
708                                         }
709                                 }
710                                 MainUndoStack.getGlobalStack().addAction(undo);
711                                 break;
712                 }
713         }
714
715       private function tagChanged(event:TagEvent):void {
716           refreshFeatureIcon();
717       }
718
719       public function loadFeatures():void {
720           mapFeatures = MapFeatures.getInstance();
721           stack.removeChild(membersVBox); // remove by default, will be added if relation
722       }
723
724       /** Open up a new browser page, showing the help page as defined in Map Features XML file .*/
725       public function openDescription():void {
726           if ( feature != null && feature.hasHelpURL() )
727               navigateToURL(new URLRequest(feature.helpURL), "potlatch_help");
728       }
729
730       /** Open up a new browser page showing OSM's view of the current entity. */
731       public function openEntityPage():void {
732           if (selectedEntity != null && selectedEntity.id >= 0) {
733               // This is slightly hard-coded, but not drastically. The ../s could be changed for string manipulation of the apiBase
734               var urlBase:String = Connection.getConnectionInstance().apiBase + '../../browse/'
735               navigateToURL(new URLRequest(urlBase+selectedEntity.getType()+'/'+selectedEntity.id), "potlatch_browse");
736           }
737       }
738
739       public function addToRelation():void {
740           new RelationSelectPanel().init(selectedEntity,new Object());
741       }
742
743       private function removeFromRelation(id:Number, index:int=-1):void {
744                 var rel:Relation=Connection.getConnectionInstance().getRelation(id);
745                 if (index>-1) {
746                         rel.removeMemberByIndex(index, MainUndoStack.getGlobalStack().addAction);
747                 } else if (selectedEntity is EntityCollection) {
748                         var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
749                         for each (var e:Entity in EntityCollection(selectedEntity).entities) rel.removeMember(e,undo.push);
750                         MainUndoStack.getGlobalStack().addAction(undo);
751                 }
752       }
753
754       public function changeFeatureType(event:Event):void {
755           if ( selectedEntity == null )
756               return;
757
758           UIComponent.suspendBackgroundProcessing();
759           var newFeature:Feature = currentCategorySelector.selectedType;
760           var undoStack:Function = MainUndoStack.getGlobalStack().addAction;
761           var action:CompositeUndoableAction = new CompositeUndoableAction(
762                   "Set "+selectedEntity.getType()+" "+selectedEntity.id+" to "+newFeature.name);
763                   selectedEntity.suspend();
764
765           // remove tags from the current feature
766           if ( feature != null ) {
767               for each( var oldtag:Object in feature.tags ) {
768                   selectedEntity.setTag(oldtag["k"], null, action.push);
769               }
770           }
771
772           // set tags for new feature
773           if ( newFeature != null ) {
774               for each( var newtag:Object in newFeature.tags ) {
775                   selectedEntity.setTag(newtag["k"], newtag["v"], action.push);
776               }
777           }
778
779                   selectedEntity.resume();
780           undoStack(action);
781           popupChange.close();
782           initialiseEditors();
783           UIComponent.resumeBackgroundProcessing();
784       }
785
786         private function resizePOIGrid(event:Event):void {
787                 var rows:Number=event.target.dataProvider.length/event.target.columnCount;
788                 if (rows!=Math.floor(rows)) { rows=Math.floor(rows+1); }
789                 event.target.height=rows*(event.target.rowHeight+1);
790         }
791   ]]></mx:Script>
792 </mx:VBox>
793