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