Merge branch 'master' into history
[potlatch2.git] / net / systemeD / potlatch2 / TagViewer.mxml
1 <?xml version="1.0" encoding="utf-8"?>
2 <!---
3   The TagViewer is the container for the entire sidebar. It has a number of components, and subpanels, in a ViewStack that change
4   depending on what is selected, i.e. the ControllerState.
5
6   @see net.systemeD.potlatch2.controller.ControllerState
7     -->
8 <mx:VBox
9     xmlns:fx="http://ns.adobe.com/mxml/2009"
10         xmlns:mx="library://ns.adobe.com/flex/mx"
11         xmlns:flexlib="flexlib.containers.*"
12         xmlns:controls="net.systemeD.controls.*"
13         xmlns:potlatch2="net.systemeD.potlatch2.*"
14     xmlns:sidepanel="net.systemeD.potlatch2.panels.*"
15         horizontalScrollPolicy="off"
16     backgroundColor="white"
17     initialize="loadFeatures()">
18
19 <mx:ViewStack id="sidebar" width="100%" height="100%" creationPolicy="all">
20
21   <!-- Drag & drop icon panel -->
22
23   <mx:VBox id="dndPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
24     <mx:Text id="dndPanelText" text="{dndPrompt}" width="100%" styleName="helpInfo" />
25         <mx:Repeater id="dndRep" dataProvider="{MapFeatures.getInstance().getCategoriesForType('point')}" styleName="dndRepeater">
26                 <mx:HBox width="100%" styleName="dndPanelCategory">
27                         <mx:Label text="{dndRep.currentItem.name}:" styleName="dndPanelCategoryLabel"/>
28                 </mx:HBox>
29
30                 <mx:TileList dataProvider="{dndRep.currentItem.getFeaturesForType('point', true)}" width="100%" height="1"
31                                      rowHeight="32" columnWidth="32" updateComplete="resizePOIGrid(event)" styleName="dndPanelTileList">
32                         <mx:itemRenderer>
33                                 <fx:Component>
34                                         <mx:VBox toolTip="{data.name}">
35                                                 <fx:Script><![CDATA[
36                                                         import mx.events.DragEvent;
37                                                         import mx.managers.DragManager;
38                                                         import mx.core.DragSource;
39
40                                                         private function dragPOI(event:MouseEvent, tags:Array):void {
41                                                                 if (outerDocument.controller.map.dragstate==outerDocument.controller.map.DRAGGING) return;
42
43                                                                 // Get the drag initiator component from the event object.
44                                                                 var dragInitiator:Image = event.currentTarget as Image;
45                                                                 var dragSource:DragSource = new DragSource();
46                                                                 dragSource.addData(tags, 'tags');
47                                                                 dragSource.addData(event.target.parent.parent.parent.parent, 'container');
48
49                                                                 var dragProxy:Image = new Image();
50                                                                 dragProxy.source = dragInitiator.source;
51                                                                 dragProxy.width = dragInitiator.width;   // must set width and height explicitly
52                                                                 dragProxy.height = dragInitiator.height; // for non-embedded images
53                                                                 DragManager.doDrag(dragInitiator, dragSource, event, dragProxy);
54                                                         }
55                                                 ]]></fx:Script>
56                                                 <mx:Image id="foo" source="{data.dndimage}" height="24" width="24" mouseMove="dragPOI(event, data.tags)" toolTip="{data.name}" />
57                                         </mx:VBox>
58                                 </fx:Component>
59                         </mx:itemRenderer>
60                 </mx:TileList>
61         </mx:Repeater>
62   </mx:VBox>
63
64   <!-- Standard tagging panel -->
65
66   <mx:VBox id="tagsPanel" width="100%" height="100%" creationPolicy="auto" tabChildren="true">
67     <mx:ViewStack id="stack" width="100%" height="100%" change="tagsPanel.tabChildren=(event.newIndex==0)">
68       <mx:VBox width="100%" height="100%" label="Simple" id="editorContainer" creationComplete="initEditorStackUIs()" styleName="dndPanelVbox">
69         <mx:VBox width="100%" verticalGap="1" styleName="dndTagHeader">
70           <mx:HBox width="100%" id="iconContainer" styleName="featureSelector">
71             <mx:Image id="iconImage"/>
72             <mx:Text condenseWhite="true" width="100%" id="iconText" styleName="dndIconText"/>
73           </mx:HBox>
74           <mx:HBox width="100%">
75             <mx:PopUpButton id="popupChange" openAlways="true" width="100%" styleName="dndTagPopUpMenu" closeDuration="0" />
76             <mx:LinkButton icon="@Embed('../../../embedded/information.svg')" click="openDescription()" id="helpLabel" styleName="helpInfo"/>
77           </mx:HBox>
78         </mx:VBox>
79       </mx:VBox>
80       <mx:VBox width="100%" height="100%" label="Advanced" id="advancedContainer" initialize="checkAdvanced()" verticalGap="1">
81         <mx:Label id="advancedID" click="new HistoryDialog().init(selectedEntity);">
82           <mx:htmlText><![CDATA[<i>No Selection</i>]]></mx:htmlText>
83         </mx:Label>
84
85                 <potlatch2:TagGrid id="advancedTagGrid" width="100%" height="75%" />
86
87         <mx:HBox horizontalAlign="right" width="100%">
88           <mx:LinkButton label="Delete" click="advancedTagGrid.removeTag()" id="advancedDeleteButton" enabled="{advancedTagGrid.selectedItem != null? true : false}"/>
89           <mx:LinkButton label="Add" click="advancedTagGrid.addNewTag()" id="advancedAddButton"/>
90         </mx:HBox>
91
92         <mx:DataGrid editable="true" width="100%" height="25%" id="relationsGrid"
93             doubleClickEnabled="true"
94             itemDoubleClick="editRelation(relationsGrid.selectedItem.id)"
95             doubleClick="if (event.target.parent==relationsGrid) { addToRelation(); }">
96             <mx:columns>
97                 <mx:DataGridColumn editable="false" dataField="description" headerText="Relation"/>
98                 <mx:DataGridColumn editable="false" dataField="id_idx" headerText="ID"/>
99                 <mx:DataGridColumn editable="true" dataField="role" headerText="Role">
100                     <mx:itemEditor><fx:Component><mx:TextInput restrict="&#x0020;-&#x10FFFF;" /></fx:Component></mx:itemEditor>
101                 </mx:DataGridColumn>
102                                 <mx:DataGridColumn width="20" editable="false">
103                                         <mx:itemRenderer>
104                                                 <fx:Component>
105                                     <mx:HBox horizontalAlign="center" verticalAlign="middle">
106                                                                 <mx:PopUpButton arrowButtonWidth="12" paddingLeft="0" paddingRight="0" width="12" height="12" 
107                                                                                 open="{outerDocument.updateRelationMenu(event);}" 
108                                                                                 creationComplete="{outerDocument.createRelationMenu(PopUpButton(event.target));}"/>
109                                                         </mx:HBox>
110                                                 </fx:Component>
111                                         </mx:itemRenderer>
112                                 </mx:DataGridColumn>
113             </mx:columns>
114         </mx:DataGrid>
115
116         <mx:HBox horizontalAlign="right" width="100%">
117           <mx:LinkButton label="Remove from" click="removeFromRelation(relationsGrid.selectedItem.id, relationsGrid.selectedItem.index)"
118                           enabled="{relationsGrid.selectedItem != null? true : false}"/>
119           <mx:LinkButton label="Add to" click="addToRelation()"/>
120         </mx:HBox>
121
122       </mx:VBox>
123
124       <mx:VBox width="100%" height="100%" label="Members" id="membersVBox" initialize="checkMembers()" verticalGap="1">
125         <mx:Label id="membersText" text="Relation Members"/>
126         <mx:DataGrid editable="true" width="100%" height="100%" id="membersGrid"
127                       dragEnabled="true" dragMoveEnabled="true" dropEnabled="true">
128           <mx:columns>
129             <mx:DataGridColumn editable="false" dataField="type" headerText="Type"/>
130             <mx:DataGridColumn editable="false" dataField="id" headerText="ID"/>
131             <mx:DataGridColumn editable="true" dataField="role" headerText="Role">
132                                 <mx:itemEditor><fx:Component><mx:TextInput restrict="&#x0020;-&#x10FFFF;" /></fx:Component></mx:itemEditor>
133                         </mx:DataGridColumn>
134           </mx:columns>
135         </mx:DataGrid>
136       </mx:VBox>
137
138       </mx:ViewStack>
139
140           <mx:HBox width="100%">
141                 <mx:LinkBar dataProvider="{stack}"/>
142                 <mx:Spacer width="100%"/>
143                 <mx:LinkButton
144                         icon="@Embed('../../../embedded/view_tabbed.png')"
145                         disabledIcon="@Embed('../../../embedded/view_tabbed_disabled.png')"
146                         click="setEditorStackUI(true)" id="tabNavigatorLabel" paddingTop="6"
147                         toolTip="Show in tabs"
148                         enabled="{editorStack is Accordion &amp;&amp; stack.selectedIndex==0}" />
149                 <mx:LinkButton
150                         icon="@Embed('../../../embedded/view_accordion.png')"
151                         disabledIcon="@Embed('../../../embedded/view_accordion_disabled.png')"
152                         click="setEditorStackUI(false)" id="accordionLabel" paddingTop="6"
153                         toolTip="Show in sliding windows"
154                         enabled="{editorStack is TabNavigator &amp;&amp; stack.selectedIndex==0}" />
155           </mx:HBox>
156   </mx:VBox>
157
158   <!-- Multiple selection -->
159
160   <mx:VBox id="multiplePanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
161     <potlatch2:TagGrid id="multiAdvancedTagGrid" width="100%" height="75%" />
162         <mx:HBox horizontalAlign="right" width="100%">
163           <mx:LinkButton label="Delete" click="multiAdvancedTagGrid.removeTag()" enabled="{multiAdvancedTagGrid.selectedItem != null? true : false}"/>
164           <mx:LinkButton label="Add" click="multiAdvancedTagGrid.addNewTag()" />
165         </mx:HBox>
166
167     <mx:DataGrid editable="true" width="100%" height="25%" id="multiRelationsGrid"
168         doubleClickEnabled="true"
169         itemDoubleClick="editRelation(multiRelationsGrid.selectedItem.id)"
170         doubleClick="if (event.target.parent==multiRelationsGrid) { addToRelation(); }">
171         <mx:columns>
172             <mx:DataGridColumn editable="false" dataField="description" headerText="Relation"/>
173             <mx:DataGridColumn editable="false" dataField="id_idx" headerText="ID"/>
174             <mx:DataGridColumn editable="true" dataField="role" headerText="Role">
175                 <mx:itemEditor><fx:Component><mx:TextInput restrict="&#x0020;-&#x10FFFF;" /></fx:Component></mx:itemEditor>
176             </mx:DataGridColumn>
177                         <mx:DataGridColumn width="20" editable="false">
178                                 <mx:itemRenderer>
179                                         <fx:Component>
180                             <mx:HBox horizontalAlign="center" verticalAlign="middle">
181                                                         <mx:PopUpButton arrowButtonWidth="12" paddingLeft="0" paddingRight="0" width="12" height="12" 
182                                                                         open="{outerDocument.updateRelationMenu(event);}" 
183                                                                         creationComplete="{outerDocument.createRelationMenu(PopUpButton(event.target));}"/>
184                                                 </mx:HBox>
185                                         </fx:Component>
186                                 </mx:itemRenderer>
187                         </mx:DataGridColumn>
188         </mx:columns>
189     </mx:DataGrid>
190     <mx:HBox horizontalAlign="right" width="100%">
191       <mx:LinkButton label="Remove from" click="removeFromRelation(multiRelationsGrid.selectedItem.id)"
192                       enabled="{multiRelationsGrid.selectedItem != null? true : false}"/>
193       <mx:LinkButton label="Add to" click="addToRelation()"/>
194     </mx:HBox>
195
196   </mx:VBox>
197
198   <!-- Multiple selection but items cannot be edited -->
199
200   <mx:VBox id="multipleInvalidPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
201         <mx:Text id="multipleInvalidPanelText" text="You have selected multiple items." width="100%" styleName="helpInfo" />
202   </mx:VBox>
203
204   <!-- Generic marker panel -->
205
206   <mx:VBox id="markerPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
207     <sidepanel:MarkerPanel id="markerPanelContents" width="100%"/>
208   </mx:VBox>
209
210   <!-- Bug editing panel -->
211
212   <mx:VBox id="bugPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
213     <sidepanel:BugPanel id="bugPanelContents" width="100%"/>
214   </mx:VBox>
215
216   <!-- Background layer selection -->
217
218   <mx:VBox id="backgroundPanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
219     <sidepanel:BackgroundPanel id="backgroundPanelContents" width="100%"/>
220   </mx:VBox>
221
222   <!-- merge tags from background layer -->
223
224   <mx:VBox id="backgroundMergePanel" width="100%" height="100%" horizontalScrollPolicy="off" styleName="dndPanelVbox">
225     <sidepanel:BackgroundMergePanel id="backgroundMergePanelContents" width="100%" />
226   </mx:VBox>
227
228 </mx:ViewStack>
229
230   <fx:Script><![CDATA[
231       import net.systemeD.halcyon.connection.*;
232       import net.systemeD.halcyon.MapPaint;
233       import net.systemeD.potlatch2.EditController;
234       import net.systemeD.potlatch2.mapfeatures.*;
235       import net.systemeD.potlatch2.history.HistoryDialog;
236       import net.systemeD.potlatch2.mapfeatures.editors.*;
237       import net.systemeD.potlatch2.utils.*;
238       import net.systemeD.controls.CollapsiblePanel;
239
240       import mx.collections.*;
241       import mx.containers.VBox;
242       import mx.containers.HBox;
243       import mx.containers.TabNavigator;
244       import mx.containers.Accordion;
245       import mx.events.*;
246       import mx.core.*;
247       import mx.managers.PopUpManager;
248       import mx.controls.Menu;
249       import mx.controls.Alert;
250       import flash.geom.Point;
251       import flash.net.*;
252       import mx.events.DragEvent;
253       import mx.managers.DragManager;
254       import mx.core.DragSource;
255       import mx.controls.TabBar;
256       import spark.components.Form;
257       import spark.layouts.FormLayout;
258 //    import flexlib.containers.SuperTabNavigator;
259
260       [Bindable] [Embed(source="../../../embedded/tab_basic.png"       )] private var tabIconBasic:Class;
261       [Bindable] [Embed(source="../../../embedded/tab_address.png"     )] private var tabIconAddress:Class;
262       [Bindable] [Embed(source="../../../embedded/tab_cycle.png"       )] private var tabIconCycle:Class;
263       [Bindable] [Embed(source="../../../embedded/tab_details.png"     )] private var tabIconDetails:Class;
264       [Bindable] [Embed(source="../../../embedded/tab_restrictions.png")] private var tabIconRestrictions:Class;
265       [Bindable] [Embed(source="../../../embedded/tab_transport.png"   )] private var tabIconTransport:Class;
266       [Bindable] [Embed(source="../../../embedded/tab_walk.png"        )] private var tabIconWalk:Class;
267       private var tabIcons:Object= { Basic:tabIconBasic, Details:tabIconDetails, Address:tabIconAddress, Walk:tabIconWalk, Cycle:tabIconCycle, 
268                                          Transport:tabIconTransport, Restrictions:tabIconRestrictions};
269
270       [Bindable]
271       public var dndPrompt:String="Add new points by dragging them onto the map";
272
273       private var editorStackTabNavigator:TabNavigator;
274       private var editorStackAccordion:Accordion;
275       [Bindable] private var editorStack:Container;
276
277       public var mapFeatures:MapFeatures;
278       public var controller:EditController;
279       private var selectedEntity:Entity;
280       private var connection:Connection;
281       private var currentCategorySelector:CategorySelector;
282       private var categorySelectors:Object = {};        // hash of categorySelectors for each limitType
283       private var feature:Feature = null;
284
285       private var rowData:Object;               // relation membership reference, needed so it's accessible from relation actions menu
286
287           public function setEntity(entities:Array, layer:MapPaint=null):void {
288                 UIComponent.suspendBackgroundProcessing();
289                 connection=null;
290
291                 var firstSelected:Entity=null;
292                 if (entities.length==1) { firstSelected=entities[0]; }
293
294                 if (selectedEntity!=firstSelected && selectedEntity!=null) {
295                         selectedEntity.removeEventListener(Connection.TAG_CHANGED, tagChanged);
296                         selectedEntity.removeEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
297                         selectedEntity.removeEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
298                         if (selectedEntity is EntityCollection) EntityCollection(selectedEntity).releaseListeners();
299                 }
300
301                 if (entities.length==0) {
302                         // Nothing selected, so show drag-and-drop panel
303                         sidebar.selectedChild = dndPanel;
304
305                 } else if (entities.length==1) {
306                         // Single entity selected, so show tag panel
307                         selectedEntity=firstSelected;
308                         connection=firstSelected.connection;
309                         if (selectedEntity!=null) { selectedEntity.addEventListener(Connection.TAG_CHANGED, tagChanged); }
310                         if (advancedID!=null) { setupAdvanced(firstSelected); }
311                         if (firstSelected is Relation) { stack.addChild(membersVBox); }
312             if (selectedEntity is Marker && connection is BugConnection) {
313               bugPanelContents.init(selectedEntity, BugConnection(connection));
314               sidebar.selectedChild = bugPanel;
315             } else if (selectedEntity is Marker) {
316               markerPanelContents.init(selectedEntity, layer);
317               sidebar.selectedChild = markerPanel;
318             } else if (connection is SnapshotConnection) {
319               backgroundPanelContents.init(selectedEntity);
320               sidebar.selectedChild = backgroundPanel;
321             } else {
322               refreshFeatureIcon();
323               initialiseEditors();
324               sidebar.selectedChild = tagsPanel;
325             }
326
327         } else if (entities.length==2
328                       && xor(entities[0].connection is SnapshotConnection, entities[1].connection is SnapshotConnection)
329                       && xor(!controller.map.getLayerForEntity(entities[0]).isBackground, !controller.map.getLayerForEntity(entities[1]).isBackground) ) {
330             backgroundMergePanelContents.init(entities);
331             sidebar.selectedChild = backgroundMergePanel;
332
333                 } else if(isMultipleEditable(entities)) {
334                         selectedEntity = new EntityCollection(entities);
335                         selectedEntity.addEventListener(Connection.TAG_CHANGED, tagChanged);
336             sidebar.selectedChild = multiplePanel;
337                         setupMultiAdvanced(selectedEntity);
338                         connection=entities[0].connection;
339                         
340                 } else {
341                         //The selection contains elements which can't be edited all together.
342                         sidebar.selectedChild = multipleInvalidPanel;
343                 }
344                 UIComponent.resumeBackgroundProcessing();
345       }
346
347       private function xor(a:Boolean, b:Boolean):Boolean {
348           return ( a || b) && !(a && b);
349       }
350
351       private function refreshFeatureIcon():void {
352           var oldFeature:Feature = feature;
353           feature = selectedEntity == null ? null : mapFeatures.findMatchingFeature(selectedEntity);
354           if ( feature != oldFeature ) {
355               if ( oldFeature != null )
356                   oldFeature.removeEventListener("imageChanged", featureImageChanged);
357               if ( feature != null )
358                   feature.addEventListener("imageChanged", featureImageChanged);
359           }
360           setCategorySelector(selectedEntity, feature);
361       }
362
363       private function featureImageChanged(event:Event):void {
364           setCategorySelector(selectedEntity, feature);
365       }
366
367       /** Set the icon, categorySelector and help text for the current entity. */
368       private function setCategorySelector(entity:Entity, feature:Feature):void {
369                         // Remove the "user has selected something" event listener from previous categorySelector,
370                         // and make it invisible because Flex is crap at updating click areas otherwise
371                         if (currentCategorySelector) { 
372                                 currentCategorySelector.removeEventListener("selectedType", changeFeatureType);
373                                 currentCategorySelector.visible=false;
374                         }
375                         
376                         // Have we cached the categorySelector for this limitType? If not, create one
377                         var lt:String=limitType(entity);
378                         if (!categorySelectors[lt]) {
379                                 categorySelectors[lt]=new CategorySelector();
380                                 categorySelectors[lt].setLimitTypes(lt);
381                         }
382                         currentCategorySelector=categorySelectors[lt];
383                         currentCategorySelector.addEventListener("selectedType", changeFeatureType, false, 0, true);
384
385                         // Update surrounding icon/text display
386                         if (feature) {
387                                 iconImage.source = feature.image;
388                                 iconText.htmlText = feature.htmlDetails(entity);
389                                 popupChange.label = feature.name;
390                                 helpLabel.visible = feature.hasHelpURL();
391                                 currentCategorySelector.setSelectedFeature(feature);
392                         } else {
393                                 iconImage.source = null;
394                                 popupChange.label = "unknown";
395                                 helpLabel.visible = false;
396                                 if (entity==null) {
397                                         iconText.htmlText = "<i>Nothing selected</i>";
398                                 } else if (entity.hasTags()) {
399                                         iconText.htmlText = "<b>Not recognised</b><br/><font size='10pt'>Try looking at the tags under the advanced properties</font>";
400                                 } else {
401                                         iconText.htmlText = "<b>No tags set</b><br/><font size='10pt'>Please use the menu below to define what this "+entity.getType()+" is</font>";
402                                 }
403                                 currentCategorySelector.setSelectedFeature(null);
404                         }
405
406                         // Set it as the popup, and make sure it's visible
407                         popupChange.popUp=currentCategorySelector;
408                         currentCategorySelector.visible=true;
409       }
410
411           private function isMultipleEditable(entities:Array):Boolean {
412                 for each(var entity:Entity in entities) {
413                         if(!(entity is Node || entity is Way))
414                                 return false;
415                 }
416                 return true;
417           }
418
419       private function limitType(entity:Entity):String {
420           if      (entity is Node    ) return "point";
421           else if (entity is Way     ) return Way(entity).isArea() ? "area" : "line";
422           else if (entity is Relation) return "relation";
423           return null;
424       }
425
426       private var tabComponents:Object = {};
427       private var subpanelComponents:Object = {};
428
429       private function initialiseEditors():void {
430                 editorStack.removeAllChildren();
431                 if ( selectedEntity == null || feature == null )
432                         return;
433
434                 var basicEditorBox:VBox = createEditorBox();
435                 basicEditorBox.label = "Basic";
436                 basicEditorBox.icon=tabIconBasic;
437                 editorStack.addChild(basicEditorBox);
438
439                 var tabs:Object = {};
440                 var tabList:Array = [];
441                 tabComponents = {};
442                 var subpanels:Object = {};
443                 subpanelComponents = {};
444
445                 // First create the tabs
446                 for each (var factory:EditorFactory in feature.editors) {
447                         var category:String = factory.category;
448                         if (category!='') {
449                                 var tab:VBox = tabs[category];
450                                 if ( tab == null) {
451                                         tab = createEditorBox();
452                                         tab.label = category;
453                                         if (tabIcons[category]) tab.icon=tabIcons[category];
454                                         tabs[category] = tab;
455                                         tabList.push(tab);      
456                                 }
457                         }
458                 }
459
460                 // Put the tabs on-screen in order
461                 tabList.sort(sortCategories,16);
462                 for each (tab in tabList) {
463                         editorStack.addChild(tab);
464                         tabComponents[tab] = [];
465                 }
466
467                 // Then add the individual editors to them
468                 for each (factory in feature.editors) {
469
470                         // Add to basic editor box first
471                         if ( factory.presence.isEditorPresent(factory, selectedEntity, null) ) {
472                                 var editor:DisplayObject = factory.createEditorInstance(selectedEntity);
473                                 if (editor) Form(basicEditorBox.getChildByName("form")).addElement(UIComponent(editor));
474                         }
475
476                         // Then prepare to add to category panel
477                         category=factory.category;
478                         if (factory.category=='') continue;
479                         var catEditor:DisplayObject = factory.createEditorInstance(selectedEntity);
480                         if (!catEditor) continue;
481                         tab=tabs[category];
482                         
483                         // Create subcategory panel if needed
484                         if (factory.subcategory) {
485                                 var subcategory:String = factory.subcategory;
486                                 if (!subpanels[category]) { subpanels[category]={}; }
487                                 var subpanel:CollapsiblePanel = subpanels[category][subcategory];
488                                 if (!subpanel) {
489                                         subpanel=new CollapsiblePanel(false);
490                                         subpanel.percentWidth=100;
491                                         subpanel.styleName="subcategoryPanel";
492                                         subpanel.title=subcategory;
493                                         subpanels[category][subcategory]=subpanel;
494                                         addConstrainedForm(subpanel);
495                                         tabComponents[tab].push(subpanel);
496                                 }
497                                 Form(subpanel.getChildByName("form")).addElement(UIComponent(catEditor));
498                         } else {
499                                 tabComponents[tab].push(catEditor);
500                         }
501                 }
502       }
503
504         // ** FIXME: Order probably shouldn't be hard-coded, but configurable
505         private static var categoryOrder:Array=["Restrictions","Transport","Cycle","Walk","Address","Details"]; // reverse order
506         private function sortCategories(a:VBox,b:VBox):int {
507                 var a1:int=categoryOrder.indexOf(a.label);
508                 var a2:int=categoryOrder.indexOf(b.label);
509                 if (a1<a2) { return 1; }
510                 else if (a1>a2) { return -1; }
511                 return 0;
512         }
513         
514         private function createEditorBox():VBox {
515                 var box:VBox = new VBox();
516                 box.percentWidth = 100;
517                 box.percentHeight = 100;
518                 box.styleName = "dndEditorContainer";
519                 addConstrainedForm(box);
520                 return box;
521         }
522         
523         private function addConstrainedForm(parentObject:DisplayObjectContainer):void {
524                 var form:Form = new Form();
525                 form.name = "form";
526                 form.percentWidth=100;
527                 form.addEventListener(mx.events.ResizeEvent.RESIZE, formResizeHandler, false, 0, true);
528                 parentObject.addChild(form);
529                 if (parentObject.width>0) form.maxWidth=parentObject.width;
530         }
531         
532         private function formResizeHandler(e:Event):void {
533                 var form:Form=Form(e.target);
534                 if (form.parent.width>0) form.maxWidth=form.parent.width;
535         }
536
537         private function ensureEditorsPopulated(tab:VBox):void {
538                 var components:Array = tabComponents[tab];
539                 var form:Form=Form(tab.getChildByName("form"));
540                 if ( components == null || tab == null || form.numElements >= components.length ) return;
541                 for each (var component:DisplayObject in components ) {
542                         form.addElement(UIComponent(component));
543                 }
544         }
545
546         private function initEditorStackUIs():void {
547                 editorStackTabNavigator = new TabNavigator();
548 //              editorStackTabNavigator.allowTabSqueezing=false;
549 //              editorStackTabNavigator.minTabWidth=10;
550 //              editorStackTabNavigator.closePolicy="close_never";
551 //              editorStackTabNavigator.scrollSpeed=20;
552                 editorStackTabNavigator.creationPolicy="auto";
553                 editorStackTabNavigator.percentWidth=100;
554                 editorStackTabNavigator.percentHeight=100;
555                 editorStackTabNavigator.styleName="dndStackTab";
556 //              editorStackTabNavigator.popUpButtonPolicy="off"
557
558
559                 editorStackAccordion = new Accordion();
560                 editorStackAccordion.percentWidth=100;
561                 editorStackAccordion.percentHeight=100;
562                 editorStackAccordion.creationPolicy="auto";
563                 editorStackAccordion.styleName="dndStackAccordion";
564                 /* FIXME: the accordion icons should be right-aligned. See:
565                 http://www.kristoferjoseph.com/blog/2008/11/06/positioning-the-flex-accordion-header-icon
566                 http://blog.flexexamples.com/2007/09/13/changing-text-alignment-in-an-flex-accordion-header/
567                 */
568
569                 setEditorStackUI(true);
570         }
571
572         private function setEditorStackUI(isTabbed:Boolean):void {
573                 var children:Array=[]; var i:uint;
574
575                 if (editorStack) {
576                         // blank existing component
577                         editorStack.removeEventListener("change",editorStackUIChange);
578                         editorStack.removeEventListener("updateComplete",editorStackUIUpdate);
579                         editorStack.removeAllChildren();
580                         editorContainer.removeChildAt(1);
581                 }
582
583                 // replace with new component
584                 editorStack = (isTabbed ? editorStackTabNavigator : editorStackAccordion) as Container;
585                 editorContainer.addChild(editorStack);
586
587                 // re-add children and listeners
588                 initialiseEditors();
589                 editorStack.addEventListener("change",editorStackUIChange);
590                 editorStack.addEventListener("updateComplete",editorStackUIUpdate);
591         }
592
593         private function editorStackUIChange(event:Event):void {
594                 ensureEditorsPopulated(IndexChangedEvent(event).relatedObject as VBox);
595         }
596
597         private function editorStackUIUpdate(event:Event):void {
598                 if (editorStack is TabNavigator) {
599                         var e:TabNavigator = editorStack as TabNavigator;
600                         if (e.selectedIndex<0) { return; }
601                         for (var i:uint=0; i<e.numChildren; i++) {
602                                 e.getTabAt(i).selected=(i==e.selectedIndex);
603                         }
604                 }
605         }
606
607
608         public function togglePanel():void {
609                 if (stack.selectedChild==editorContainer && selectedEntity!=null) {
610                         stack.selectedChild=advancedContainer;
611                 } else if (stack.selectedChild!=editorContainer) {
612                         stack.selectedChild=editorContainer;
613                 }
614         }
615
616         public function selectAdvancedPanel():void {
617                 checkAdvanced();
618                 stack.selectedChild=advancedContainer;
619         }
620
621       private function checkAdvanced():void {
622           if ( selectedEntity != null )
623              setupAdvanced(selectedEntity);
624       }
625
626       private var listeningToRelations:Array = [];
627
628       private function setupAdvanced(entity:Entity):void {
629                 if (!advancedTagGrid) advancedContainer.createComponentsFromDescriptors();      // if Flex hasn't created it, force it
630                 advancedTagGrid.init(entity);
631
632                 if ( entity == null ) {
633                         advancedID.htmlText = "";
634                 } else {
635                         var entityText:String = "xx";
636                         if      ( entity is Node     ) entityText = "Node";
637                         else if ( entity is Way      ) entityText = "Way";
638                         else if ( entity is Relation ) entityText = "Relation";
639                         advancedID.htmlText = entityText+": <b>"+entity.id+"</b> "+(entity.status ? entity.status : '');
640                 }
641
642                 removeRelationListeners();
643
644                 if ( entity == null ) {
645                         relationsGrid.dataProvider = null;
646                 } else {
647                         resetRelationsGrid(entity);
648                         entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation);
649                         entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation);
650                 }
651       }
652
653           private function setupMultiAdvanced(entity:Entity):void {
654                 multiAdvancedTagGrid.init(entity);
655                 resetRelationsGrid(entity);
656                 entity.addEventListener(Connection.ADDED_TO_RELATION, addedToRelation, false, 0, true);
657                 entity.addEventListener(Connection.REMOVED_FROM_RELATION, removedFromRelation, false, 0, true);
658       }
659
660           public function addNewTag():void {
661                 if (sidebar.selectedChild==multiplePanel) { multiAdvancedTagGrid.addNewTag(); }
662                 else if (stack.selectedChild==advancedContainer) { advancedTagGrid.addNewTag(); }
663           }
664
665       private function addedToRelation(event:RelationMemberEvent):void {
666          resetRelationsGrid(selectedEntity);
667       }
668
669       private function removedFromRelation(event:RelationMemberEvent):void {
670          resetRelationsGrid(selectedEntity);
671       }
672
673       private function removeRelationListeners():void {
674           for each( var rel:Relation in listeningToRelations ) {
675               rel.removeEventListener(Connection.TAG_CHANGED, relationTagChanged);
676               rel.removeEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
677               rel.removeEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
678           }
679           listeningToRelations = [];
680           if (relationsGrid) relationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
681           if (multiRelationsGrid) multiRelationsGrid.removeEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged);
682       }
683
684       private function resetRelationsGrid(entity:Entity):void {
685           removeRelationListeners();
686
687           var instance:DataGrid=relationsGrid;
688           if (entity is EntityCollection) instance=multiRelationsGrid;
689           var memberships:Array = entity.getRelationMemberships();
690           for each (var m:Object in memberships) {
691               m.relation.addEventListener(Connection.TAG_CHANGED, relationTagChanged);
692               m.relation.addEventListener(Connection.RELATION_MEMBER_ADDED, entityRelationMemberChanged);
693               m.relation.addEventListener(Connection.RELATION_MEMBER_REMOVED, entityRelationMemberChanged);
694               listeningToRelations.push(m.relation);
695           }
696           instance.dataProvider = memberships;
697           instance.addEventListener(DataGridEvent.ITEM_EDIT_END, relationRoleChanged, false, -100);
698       }
699
700       private function relationRoleChanged(event:DataGridEvent):void {
701                 if (event.dataField != 'role') { return; }      // shouldn't really happen
702
703                 var relations:Array=event.currentTarget.dataProvider.toArray();
704                 var props:Object=relations[event.rowIndex];
705
706                 var relation:Relation=props['relation'];
707                 var newRole:String=event.itemRenderer.data['role'];
708
709                 if (selectedEntity is EntityCollection) {
710                         for each (var entity:Entity in EntityCollection(selectedEntity).entities) {
711                                 var indexes:Array=relation.findEntityMemberIndexes(entity);
712                                 for each (var index:int in indexes) {
713                                         relation.setMember(index, new RelationMember(entity,newRole), MainUndoStack.getGlobalStack().addAction);
714                                 }
715                         }
716                 } else {
717                         relation.setMember(props['index'], new RelationMember(selectedEntity,newRole), MainUndoStack.getGlobalStack().addAction);
718                 }
719       }
720
721       private function relationTagChanged(event:TagEvent):void {
722           resetRelationsGrid(selectedEntity);
723       }
724
725       private function entityRelationMemberChanged(event:RelationMemberEvent):void {
726           resetRelationsGrid(selectedEntity);
727       }
728
729       private function checkMembers():void {
730           if (selectedEntity is Relation) {
731             setupMembers(selectedEntity as Relation);
732           }
733       }
734
735       private function setupMembers(rel:Relation):void {
736           var members:Array = [];
737           for (var i:int=0 ; i<rel.length; i++) {
738             var props:Object = {};
739             var member:RelationMember = rel.getMember(i);
740             props["id"] = member.entity.id;
741             props["type"] = member.entity.getType();
742             props["role"] = member.role;
743
744             members.push(props);
745           }
746           membersGrid.dataProvider = members;
747           membersGrid.dataProvider.addEventListener('collectionChange', membersChange);
748       }
749
750       private function membersChange(event:Event):void {
751           // Dropping all the members and re-adding them isn't exactly optimal
752           // but is at least robust for any kind of change.
753           // Figuring out a better way is someone else's FIXME
754
755           var rel:Relation = selectedEntity as Relation;
756           var action:CompositeUndoableAction = new CompositeUndoableAction("Rearrange relation members for "+rel);
757
758           // drop members
759           for (var i:int=rel.length-1 ; i>=0; i--) {
760             rel.removeMemberByIndex(i, action.push);
761           }
762
763           // add members in new order
764           for each(var memberObject:Object in membersGrid.dataProvider) {
765             var e:Entity;
766             var id:Number = memberObject.id;
767                         switch (memberObject.type) {
768                                 case 'node':            e = connection.getNode(id); break;
769                 case 'way':                     e = connection.getWay(id); break;
770                                 case 'relation':        e = connection.getRelation(id); break;
771             }
772             rel.appendMember(new RelationMember(e, memberObject.role), action.push);
773           }
774           MainUndoStack.getGlobalStack().addAction(action);
775       }
776
777       private function editRelation(id:Number):void {
778           var panel:RelationEditorPanel = RelationEditorPanel(
779               PopUpManager.createPopUp(Application(FlexGlobals.topLevelApplication), RelationEditorPanel, true));
780           panel.setRelation(connection.getRelation(id));
781           PopUpManager.centerPopUp(panel);
782       }
783
784         /** Create relation actions menu */
785
786         public function createRelationMenu(button:PopUpButton):void {
787                 var menu:Menu = new Menu(); 
788                 var dp:Object = [ {label: "Select all members"}, 
789                                                   {label: "Deselect all members"}, 
790                                                   {label: "Add selection to this relation", enabled: false},
791                                                   {label: "Delete relation"} ]; 
792                 menu.dataProvider = dp; 
793                 menu.addEventListener("itemClick", selectRelationMenu); 
794                 button.popUp = menu;
795         }
796
797         /** Enable 'add selection to...' entry only if some of the selection isn't in the relation.
798             Called each time the menu is clicked. */
799         
800         public function updateRelationMenu(event:Event):void {
801                 rowData=event.target.parent.data;       // this makes it accessible from selectRelationMenu
802                 var menu:Menu = Menu(event.target.popUp);
803                 var enable:Boolean = false;
804                 if (selectedEntity != null && selectedEntity is EntityCollection) {
805                         // Enable only if some entities aren't a member of the relation
806                         enable=!rowData.universal;
807                 }
808                 if (enable==menu.dataProvider[2].enabled) return;
809                 menu.dataProvider[2].enabled=enable;
810                 menu.invalidateList();
811         }
812
813         /** Do the action selected in the relation actions menu */
814
815         public function selectRelationMenu(event:MenuEvent):void {
816                 var rel:Relation=rowData.relation;
817                 var entities:Array;
818                 var controller:EditController=FlexGlobals.topLevelApplication.theController;
819                 switch (event.index) {
820                         case 0: // Select all members
821                                 entities=selectedEntity.entities.concat(rel.memberEntities);
822                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return arr.indexOf(e) == i } );      // remove duplicates
823                                 // ** FIXME: This is a really horrible way of changing the controller state
824                                 controller.setState(controller.findStateForSelection(entities));
825                                 break;
826
827                         case 1: // Deselect all members
828                                 entities=selectedEntity.entities;
829                                 entities=entities.filter(function(e:*, i:int, arr:Array):Boolean { return !e.hasParent(rel) } );
830                                 controller.setState(controller.findStateForSelection(entities));
831                                 break;
832
833                         case 2: // Add selection to this relation
834                                 var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
835                                 for each (var entity:Entity in selectedEntity.entities) {
836                                         if (!entity.hasParent(rel)) {
837                                                 rel.appendMember(new RelationMember(entity,''), undo.push);
838                                         }
839                                 }
840                                 MainUndoStack.getGlobalStack().addAction(undo);
841                                 break;
842                         
843                         case 3: // Delete relation
844                                 var warning:String="This relation has # members. Deleting it will affect all of them and erase this $. Are you really sure?";
845                                 warning=warning.replace("#",rel.length).replace("$",rel.getRelationType());
846                                 Alert.show(warning,"Are you sure?",Alert.YES | Alert.CANCEL,null,
847                                         function(event:CloseEvent):void { 
848                                                 if (event.detail==Alert.CANCEL) return;
849                                                 rel.remove(MainUndoStack.getGlobalStack().addAction);
850                                         } , null, Alert.CANCEL);
851                                 break;
852                 }
853         }
854
855       private function tagChanged(event:TagEvent):void {
856           refreshFeatureIcon();
857       }
858
859       public function loadFeatures():void {
860           mapFeatures = MapFeatures.getInstance();
861           stack.removeChild(membersVBox); // remove by default, will be added if relation
862       }
863
864       /** Open up a new browser page, showing the help page as defined in Map Features XML file .*/
865       public function openDescription():void {
866           if ( feature != null && feature.hasHelpURL() )
867               navigateToURL(new URLRequest(feature.helpURL), "potlatch_help");
868       }
869
870       public function addToRelation():void {
871           new RelationSelectPanel().init(selectedEntity,new Object());
872       }
873
874       private function removeFromRelation(id:Number, index:int=-1):void {
875                 var rel:Relation=connection.getRelation(id);
876                 if (index>-1) {
877                         rel.removeMemberByIndex(index, MainUndoStack.getGlobalStack().addAction);
878                 } else if (selectedEntity is EntityCollection) {
879                         var undo:CompositeUndoableAction=new CompositeUndoableAction("Remove selection from relations");
880                         for each (var e:Entity in EntityCollection(selectedEntity).entities) rel.removeMember(e,undo.push);
881                         MainUndoStack.getGlobalStack().addAction(undo);
882                 }
883       }
884
885       public function changeFeatureType(event:Event):void {
886           if ( selectedEntity == null )
887               return;
888
889           UIComponent.suspendBackgroundProcessing();
890           var newFeature:Feature = currentCategorySelector.selectedType;
891           var undoStack:Function = MainUndoStack.getGlobalStack().addAction;
892           var action:CompositeUndoableAction = new CompositeUndoableAction(
893                   "Set "+selectedEntity.getType()+" "+selectedEntity.id+" to "+newFeature.name);
894                   selectedEntity.suspend();
895           
896           // build a list of tags that are editable in new feature
897           var editableTags:Array = new Array();
898           for each( var editor:EditorFactory in newFeature.editors ) {
899               if ( editor is SingleTagEditorFactory ) {
900                   var singleTagEditor:SingleTagEditorFactory = editor as SingleTagEditorFactory;
901                   editableTags.push(singleTagEditor.key);
902               }
903           }
904
905           // remove tags from the current feature
906           if ( feature != null ) {
907               for each( var oldtag:Object in feature.tags ) {
908                   if ( editableTags.indexOf(oldtag["k"]) < 0 ) {
909                       selectedEntity.setTag(oldtag["k"], null, action.push);
910                   }
911               }
912           }
913
914           // set tags for new feature
915           if ( newFeature != null ) {
916               for each( var newtag:Object in newFeature.tags ) {
917                   selectedEntity.setTag(newtag["k"], newtag["v"], action.push);
918               }
919           }
920
921                   selectedEntity.resume();
922           undoStack(action);
923           popupChange.close();
924           initialiseEditors();
925           UIComponent.resumeBackgroundProcessing();
926       }
927
928         private function resizePOIGrid(event:Event):void {
929                 var rows:Number=event.target.dataProvider.length/event.target.columnCount;
930                 if (rows!=Math.floor(rows)) { rows=Math.floor(rows+1); }
931                 event.target.height=rows*(event.target.rowHeight+1);
932         }
933
934   ]]></fx:Script>
935 </mx:VBox>
936