point out forcibly to Flex that as I have closed the popup, I might like to be able...
[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       /**
494       * When you enter a new tag and press enter, the focus moves to the add button
495       * Adding an event listener to the button and listening for + means that you
496       * can add two consecutive tags with the same keypress. This relies on focus
497       * moving to the "add" button, though, so it's not robust to rearranging the UI.
498       */
499       private function advancedAddButtonKeyboardEvent(event:KeyboardEvent):void {
500           switch (event.keyCode) {
501             case 187:   addNewTag(); break;                          // + - add tag
502             case 107:   addNewTag(); break;                          // numpad plus
503           }
504       }
505
506       private var listeningToRelations:Array = [];
507
508       private function setupAdvanced(entity:Entity):void {
509                 if (!advancedTagGrid) advancedContainer.createComponentsFromDescriptors();      // if Flex hasn't created it, force it
510                 advancedTagGrid.init(entity);
511         advancedAddButton.addEventListener(KeyboardEvent.KEY_DOWN, advancedAddButtonKeyboardEvent, false, 0, true);
512         advancedDeleteButton.addEventListener(KeyboardEvent.KEY_DOWN, advancedAddButtonKeyboardEvent, false, 0, true);
513
514                 if ( entity == null ) {
515                         advancedID.htmlText = "";
516                 } else {
517                         var entityText:String = "xx";
518                         if      ( entity is Node     ) entityText = "Node";
519                         else if ( entity is Way      ) entityText = "Way";
520                         else if ( entity is Relation ) entityText = "Relation";
521                         advancedID.htmlText = entityText+": <b>"+entity.id+"</b>";
522                 }
523
524                 removeRelationListeners();
525
526                 if ( entity == null ) {
527                         relationsGrid.dataProvider = null;
528                 } else {
529                         resetRelationsGrid(entity);
530                         entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
531                         entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
532                 }
533       }
534
535           private function setupMultiAdvanced(entity:Entity):void {
536                 multiAdvancedTagGrid.init(entity);
537                 resetRelationsGrid(entity);
538                 entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation, false, 0, true);
539                 entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation, false, 0, true);
540       }
541
542           public function addNewTag():void {
543                 if (stack.selectedChild!=advancedContainer) { return; }
544                 advancedTagGrid.addNewTag();
545           }
546
547       private function addedToRelation(event:RelationMemberEvent):void {
548          resetRelationsGrid(selectedEntity);
549       }
550
551       private function removedFromRelation(event:RelationMemberEvent):void {
552          resetRelationsGrid(selectedEntity);
553       }
554
555       private function removeRelationListeners():void {
556           for each( var rel:Relation in listeningToRelations ) {
557               rel.removeEventListener(Connection.TAG_CHANGED, relationTagChanged);
558               rel.removeEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
559               rel.removeEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
560           }
561           listeningToRelations = [];
562           if (relationsGrid) relationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
563           if (multiRelationsGrid) multiRelationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
564       }
565
566       private function resetRelationsGrid(entity:Entity):void {
567           removeRelationListeners();
568
569           var instance:DataGrid=relationsGrid;
570           if (entity is EntityCollection) instance=multiRelationsGrid;
571           var memberships:Array = entity.getRelationMemberships();
572           for each (var m:Object in memberships) {
573               m.relation.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
574               m.relation.addEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
575               m.relation.addEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
576               listeningToRelations.push(m.relation);
577           }
578           instance.dataProvider = memberships;
579           instance.addEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged, false, -100);
580       }
581
582       private function relationRoleChanged(event:DataGridEvent):void {
583                 if (event.dataField != 'role') { return; }      // shouldn't really happen
584
585                 var relations:Array=event.currentTarget.dataProvider.toArray();
586                 var props:Object=relations[event.rowIndex];
587
588                 var relation:Relation=props['relation'];
589                 var newRole:String=event.itemRenderer.data['role'];
590
591                 if (selectedEntity is EntityCollection) {
592                         for each (var entity:Entity in EntityCollection(selectedEntity).entities) {
593                                 var indexes:Array=relation.findEntityMemberIndexes(entity);
594                                 for each (var index:int in indexes) {
595                                         relation.setMember(index, new RelationMember(entity,newRole));
596                                 }
597                         }
598                 } else {
599                         relation.setMember(props['index'], new RelationMember(selectedEntity,newRole));
600                 }
601       }
602
603       private function relationTagChanged(event:TagEvent):void {
604           resetRelationsGrid(selectedEntity);
605       }
606
607       private function entityRelationMemberChanged(event:RelationMemberEvent):void {
608           resetRelationsGrid(selectedEntity);
609       }
610
611       private function checkMembers():void {
612           if (selectedEntity is Relation) {
613             setupMembers(selectedEntity as Relation);
614           }
615       }
616
617       private function setupMembers(rel:Relation):void {
618           var members:Array = [];
619           for (var i:int=0 ; i<rel.length; i++) {
620             var props:Object = {};
621             var member:RelationMember = rel.getMember(i);
622             props["id"] = member.entity.id;
623             props["type"] = member.entity.getType();
624             props["role"] = member.role;
625
626             members.push(props);
627           }
628           membersGrid.dataProvider = members;
629           membersGrid.dataProvider.addEventListener('collectionChange', membersChange);
630       }
631
632       private function membersChange(event:Event):void {
633           // Dropping all the members and re-adding them isn't exactly optimal
634           // but is at least robust for any kind of change.
635           // Figuring out a better way is someone else's FIXME
636
637           var conn:Connection = Connection.getConnectionInstance();
638           var rel:Relation = selectedEntity as Relation
639           var action:CompositeUndoableAction = new CompositeUndoableAction("Rearrange relation members for "+rel);
640
641           // drop members
642           for (var i:int=rel.length-1 ; i>=0; i--) {
643             rel.removeMemberByIndex(i, action.push);
644           }
645
646           // add members in new order
647           for each(var memberObject:Object in membersGrid.dataProvider) {
648             var e:Entity;
649             var id:Number = memberObject.id;
650             if(memberObject.type == 'node') {
651               e = conn.getNode(id);
652             } else if (memberObject.type == 'way') {
653               e = conn.getWay(id);
654             } else if (memberObject.type == 'relation') {
655               e = conn.getRelation(id);
656             }
657             rel.appendMember(new RelationMember(e, memberObject.role), action.push);
658           }
659           MainUndoStack.getGlobalStack().addAction(action);
660       }
661
662       private function editRelation(id:Number):void {
663           var panel:RelationEditorPanel = RelationEditorPanel(
664               PopUpManager.createPopUp(Application(Application.application), RelationEditorPanel, true));
665           panel.setRelation(Connection.getConnectionInstance().getRelation(id));
666           PopUpManager.centerPopUp(panel);
667       }
668
669         /** Create relation actions menu */
670
671         public function createRelationMenu(button:PopUpButton):void {
672                 var menu:Menu = new Menu(); 
673                 var dp:Object = [ {label: "Select all members"}, 
674                                                   {label: "Deselect all members"}, 
675                                                   {label: "Add selection to this relation", enabled: false} ]; 
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         }
728
729       private function tagChanged(event:TagEvent):void {
730               if(selectedEntity != null && selectedEntity is EntityCollection) {
731                         setupMultiAdvanced(selectedEntity);
732                     return;
733                   }
734
735           refreshFeatureIcon();
736           // ** FIXME - changing tags on Advanced tab should update simple view
737           // (but putting initialiseEditors here breaks other stuff, because it causes
738           // the Basic pane to be selected)
739
740           // if the advancedTagGrid has already been set up, it needs to be refreshed.
741           // FIXME make this better, maybe advancedTagGrid should be event listening.
742           if(advancedContainer.initialized) {
743             checkAdvanced();
744           }
745       }
746
747       public function loadFeatures():void {
748           mapFeatures = MapFeatures.getInstance();
749           stack.removeChild(membersVBox); // remove by default, will be added if relation
750       }
751
752       /** Open up a new browser page, showing the help page as defined in Map Features XML file .*/
753       public function openDescription():void {
754           if ( feature != null && feature.hasHelpURL() )
755               navigateToURL(new URLRequest(feature.helpURL), "potlatch_help");
756       }
757
758       /** Open up a new browser page showing OSM's view of the current entity. */
759       public function openEntityPage():void {
760           if (selectedEntity != null && selectedEntity.id >= 0) {
761               // This is slightly hard-coded, but not drastically. The ../s could be changed for string manipulation of the apiBase
762               var urlBase:String = Connection.getConnectionInstance().apiBase + '../../browse/'
763               navigateToURL(new URLRequest(urlBase+selectedEntity.getType()+'/'+selectedEntity.id), "potlatch_browse");
764           }
765       }
766
767       public function addToRelation():void {
768           new RelationSelectPanel().init(selectedEntity,new Object());
769       }
770
771       private function removeFromRelation(id:Number, index:int=-1):void {
772                 var rel:Relation=Connection.getConnectionInstance().getRelation(id);
773                 if (index>-1) {
774                         rel.removeMemberByIndex(index, MainUndoStack.getGlobalStack().addAction);
775                 } else if (selectedEntity is EntityCollection) {
776                         var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
777                         for each (var e:Entity in EntityCollection(selectedEntity).entities) rel.removeMember(e,undo.push);
778                         MainUndoStack.getGlobalStack().addAction(undo);
779                 }
780       }
781
782       public function changeFeatureType(event:Event):void {
783           if ( selectedEntity == null )
784               return;
785
786           UIComponent.suspendBackgroundProcessing();
787           var newFeature:Feature = currentCategorySelector.selectedType;
788           var undoStack:Function = MainUndoStack.getGlobalStack().addAction;
789           var action:CompositeUndoableAction = new CompositeUndoableAction(
790                   "Set "+selectedEntity.getType()+" "+selectedEntity.id+" to "+newFeature.name);
791                   selectedEntity.suspend();
792
793           // remove tags from the current feature
794           if ( feature != null ) {
795               for each( var oldtag:Object in feature.tags ) {
796                   selectedEntity.setTag(oldtag["k"], null, action.push);
797               }
798           }
799
800           // set tags for new feature
801           if ( newFeature != null ) {
802               for each( var newtag:Object in newFeature.tags ) {
803                   selectedEntity.setTag(newtag["k"], newtag["v"], action.push);
804               }
805           }
806
807                   selectedEntity.resume();
808           undoStack(action);
809           popupChange.close();
810           initialiseEditors();
811           UIComponent.resumeBackgroundProcessing();
812       }
813
814         private function resizePOIGrid(event:Event):void {
815                 var rows:Number=event.target.dataProvider.length/event.target.columnCount;
816                 if (rows!=Math.floor(rows)) { rows=Math.floor(rows+1); }
817                 event.target.height=rows*(event.target.rowHeight+1);
818         }
819   ]]></mx:Script>
820 </mx:VBox>
821