net/systemeD/potlatch2/EditController.as

   1 package net.systemeD.potlatch2 {
   2     import net.systemeD.halcyon.Map;
   3     import net.systemeD.halcyon.MapPaint;
   4     import net.systemeD.halcyon.MapController;
   5     import net.systemeD.halcyon.MapEvent;
   6     import net.systemeD.halcyon.connection.*;
   7     import net.systemeD.halcyon.Globals;
   8     import net.systemeD.potlatch2.controller.*;
   9     import net.systemeD.potlatch2.FunctionKeyManager;
  10         import mx.managers.CursorManager;
  11     import flash.external.ExternalInterface;
  12     import flash.events.*;
  13         import flash.geom.*;
  14         import flash.ui.Keyboard;
  15         import flash.text.TextField;
  16     import mx.controls.TextArea;
  17
  18     /** Controller for the main map editing window itself. The logic that responds to mouse and keyboard events is all
  19     * buried in various ControllerState classes. */
  20     public class EditController implements MapController {
  21
  22         private var _map:Map;
  23         public var tagViewer:TagViewer;
  24                 private var toolbox:Toolbox;
  25
  26         public var state:ControllerState;
  27
  28                 private var keys:Object={};
  29                 public var clipboards:Object={};
  30                 public var cursorsEnabled:Boolean=true;
  31         private var maximised:Boolean=false;
  32         private var maximiseFunction:String;
  33         private var minimiseFunction:String;
  34         private var moveFunction:String;
  35
  36                 [Embed(source="../../../embedded/pen.png")]             public var pen:Class;
  37                 [Embed(source="../../../embedded/pen_x.png")]           public var pen_x:Class;
  38                 [Embed(source="../../../embedded/pen_o.png")]           public var pen_o:Class;
  39                 [Embed(source="../../../embedded/pen_so.png")]          public var pen_so:Class;
  40                 [Embed(source="../../../embedded/pen_plus.png")]        public var pen_plus:Class;
  41
  42         /** Constructor function: needs the map information, a panel to edit tags with, and the toolbox to manipulate ways with. */
  43         public function EditController(map:Map, tagViewer:TagViewer, toolbox:Toolbox) {
  44             this._map = map;
  45             setState(new NoSelection());
  46             this.tagViewer = tagViewer;
  47                         this.toolbox = toolbox;
  48                         this.toolbox.init(this);
  49             this.maximiseFunction = Globals.vars.flashvars["maximise_function"];
  50             this.minimiseFunction = Globals.vars.flashvars["minimise_function"];
  51             this.moveFunction     = Globals.vars.flashvars["move_function"];
  52
  53             map.parent.addEventListener(MouseEvent.MOUSE_MOVE, mapMouseEvent);
  54             map.parent.addEventListener(MouseEvent.MOUSE_UP, mapMouseEvent);
  55             map.parent.addEventListener(MouseEvent.MOUSE_DOWN, mapMouseEvent);
  56             map.parent.addEventListener(MouseEvent.MOUSE_WHEEL, mapMouseEvent);
  57             map.parent.addEventListener(MouseEvent.CLICK, mapMouseEvent);
  58             map.stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);
  59             map.stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler);
  60
  61             if (this.moveFunction) {
  62                 map.addEventListener(MapEvent.MOVE, moveHandler);
  63             }
  64         }
  65
  66         public function setActive():void {
  67             map.setController(this);
  68         }
  69
  70         /** Accesses map object. */
  71         public function get map():Map {
  72             return _map;
  73         }
  74
  75         /**
  76         * Updates the various user interfaces that change when the selection changes.
  77         * Currently this is the TagViewer and the Toolbox
  78         *
  79         * @param layer Optionally pass the layer of the currently selected entity, eg for BugLayers
  80         */
  81                 public function updateSelectionUI(layer:MapPaint = null):void {
  82                         tagViewer.setEntity(state.selection, layer);
  83                         toolbox.updateSelectionUI();
  84                 }
  85
  86                 public function updateSelectionUIWithoutTagChange():void {
  87                         toolbox.updateSelectionUI();
  88                 }
  89
  90         private function keyDownHandler(event:KeyboardEvent):void {
  91                         if ((event.target is TextField) || (event.target is TextArea)) return;
  92                         keys[event.keyCode]=true;
  93                 }
  94
  95         private function keyUpHandler(event:KeyboardEvent):void {
  96             if (!keys[event.keyCode]) return;
  97             delete keys[event.keyCode];
  98             if ((event.target is TextField) || (event.target is TextArea)) return;                              // not meant for us
  99
 100                         if (FunctionKeyManager.instance().handleKeypress(event.keyCode)) { return; }
 101
 102             if (event.keyCode == 77) { toggleSize(); } // 'M'
 103             var newState:ControllerState = state.processKeyboardEvent(event);
 104             setState(newState);
 105                 }
 106
 107                 /** Is the given key currently pressed? */
 108                 public function keyDown(key:Number):Boolean {
 109                         return Boolean(keys[key]);
 110                 }
 111
 112         private function mapMouseEvent(event:MouseEvent):void {
 113             if (isInteractionEvent(event)) map.stage.focus = map.parent;
 114             if (event.type==MouseEvent.MOUSE_UP && map.dragstate==map.DRAGGING) { return; }
 115
 116             var mapLoc:Point = map.globalToLocal(new Point(event.stageX, event.stageY));
 117             event.localX = mapLoc.x;
 118             event.localY = mapLoc.y;
 119
 120             var newState:ControllerState = state.processMouseEvent(event, null);
 121             setState(newState);
 122         }
 123
 124         public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
 125             if (isInteractionEvent(event)) map.stage.focus = map.parent;
 126             event.stopPropagation();
 127
 128             var mapLoc:Point = map.globalToLocal(new Point(event.stageX, event.stageY));
 129             event.localX = mapLoc.x;
 130             event.localY = mapLoc.y;
 131
 132             var newState:ControllerState = state.processMouseEvent(event, entity);
 133             setState(newState);
 134         }
 135
 136                 private function isInteractionEvent(event:MouseEvent):Boolean {
 137                         switch (event.type) {
 138                                 case MouseEvent.ROLL_OUT:       return false;
 139                                 case MouseEvent.ROLL_OVER:      return false;
 140                                 case MouseEvent.MOUSE_OUT:      return false;
 141                                 case MouseEvent.MOUSE_OVER:     return false;
 142                                 case MouseEvent.MOUSE_MOVE:     return false;
 143                 }
 144                         return true;
 145                 }
 146
 147         /** Exit the current state and switch to a new one. */
 148         public function setState(newState:ControllerState):void {
 149             if ( newState == state )
 150                 return;
 151
 152             if ( state != null )
 153                 state.exitState(newState);
 154             newState.setController(this);
 155             newState.setPreviousState(state);
 156             state = newState;
 157             state.enterState();
 158         }
 159
 160                 /** Given what is currently selected (or not), find the matching ControllerState. */
 161                 public function findStateForSelection(sel:Array):ControllerState {
 162                         if (sel.length==0) { return new NoSelection(); }
 163                         else if (sel.length>1) { return new SelectedMultiple(sel); }
 164                         else if (sel[0] is Way) { return new SelectedWay(sel[0]); }
 165                         else if (sel[0] is Node && Node(sel[0]).hasParentWays) {
 166                                 var way:Way=sel[0].parentWays[0] as Way;
 167                                 return new SelectedWayNode(way, way.indexOfNode(sel[0] as Node));
 168                         } else {
 169                                 return new SelectedPOINode(sel[0] as Node);
 170                         }
 171                 }
 172
 173                 /** Set a mouse pointer. */
 174                 public function setCursor(cursor:Class):void {
 175                         CursorManager.removeAllCursors();
 176                         if (cursor && cursorsEnabled) { CursorManager.setCursor(cursor,2,-4,0); }
 177                 }
 178
 179         private function toggleSize():void {
 180             if (maximised) {
 181                 if (minimiseFunction) {
 182                     ExternalInterface.call(minimiseFunction);
 183                 }
 184
 185                 maximised = false;
 186             } else {
 187                 if (maximiseFunction) {
 188                     ExternalInterface.call(maximiseFunction);
 189                 }
 190
 191                 maximised = true;
 192             }
 193         }
 194
 195                 private function moveHandler(event:MapEvent):void {
 196                         ExternalInterface.call(this.moveFunction,
 197                                    event.params.lon, event.params.lat, event.params.scale,
 198                                    event.params.minlon, event.params.minlat,
 199                                    event.params.maxlon, event.params.maxlat);
 200                 }
 201
 202     }
 203
 204 }