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