net/systemeD/potlatch2/EditController.as

   1 package net.systemeD.potlatch2 {
   2     import net.systemeD.halcyon.Map;
   3     import net.systemeD.halcyon.MapController;
   4     import net.systemeD.halcyon.MapEvent;
   5     import net.systemeD.halcyon.connection.*;
   6     import net.systemeD.halcyon.VectorLayer;
   7     import net.systemeD.potlatch2.controller.*;
   8     import net.systemeD.potlatch2.FunctionKeyManager;
   9         import mx.managers.CursorManager;
  10     import flash.external.ExternalInterface;
  11     import flash.events.*;
  12         import flash.geom.*;
  13         import flash.ui.Keyboard;
  14         import flash.text.TextField;
  15
  16     /** Controller for the main map editing window itself. The logic that responds to mouse and keyboard events is all
  17     * buried in various ControllerState classes. */
  18     public class EditController implements MapController {
  19
  20         private var _map:Map;
  21         public var tagViewer:TagViewer;
  22                 private var toolbox:Toolbox;
  23
  24         public var state:ControllerState;
  25         private var _connection:Connection;
  26
  27                 private var keys:Object={};
  28                 public var clipboards:Object={};
  29                 public var cursorsEnabled:Boolean=true;
  30         private var maximised:Boolean=false;
  31         private var maximiseFunction:String;
  32         private var minimiseFunction:String;
  33         private var moveFunction:String;
  34
  35                 [Embed(source="../../../embedded/pen.png")]             public var pen:Class;
  36                 [Embed(source="../../../embedded/pen_x.png")]           public var pen_x:Class;
  37                 [Embed(source="../../../embedded/pen_o.png")]           public var pen_o:Class;
  38                 [Embed(source="../../../embedded/pen_so.png")]          public var pen_so:Class;
  39                 [Embed(source="../../../embedded/pen_plus.png")]        public var pen_plus:Class;
  40
  41         /** Constructor function: needs the map information, a panel to edit tags with, and the toolbox to manipulate ways with. */
  42         public function EditController(map:Map, tagViewer:TagViewer, toolbox:Toolbox) {
  43             this._map = map;
  44             setState(new NoSelection());
  45             this.tagViewer = tagViewer;
  46                         this.toolbox = toolbox;
  47                         this.toolbox.init(this);
  48             this.maximiseFunction = Connection.getParam("maximise_function", null);
  49             this.minimiseFunction = Connection.getParam("minimise_function", null);
  50             this.moveFunction = Connection.getParam("move_function", null);
  51
  52             map.parent.addEventListener(MouseEvent.MOUSE_MOVE, mapMouseEvent);
  53             map.parent.addEventListener(MouseEvent.MOUSE_UP, mapMouseEvent);
  54             map.parent.addEventListener(MouseEvent.MOUSE_DOWN, mapMouseEvent);
  55             map.parent.addEventListener(MouseEvent.MOUSE_WHEEL, mapMouseEvent);
  56             map.parent.addEventListener(MouseEvent.CLICK, mapMouseEvent);
  57             map.stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);
  58             map.stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler);
  59
  60             if (this.moveFunction) {
  61                 map.addEventListener(MapEvent.MOVE, moveHandler);
  62             }
  63         }
  64
  65         public function setActive():void {
  66             map.setController(this);
  67             _connection = map.connection;
  68         }
  69
  70         /** Accesses map object. */
  71         public function get map():Map {
  72             return _map;
  73         }
  74
  75         /** Accesss connection object. */
  76         public function get connection():Connection {
  77             return _connection;
  78         }
  79
  80         /**
  81         * Updates the various user interfaces that change when the selection changes.
  82         * Currently this is the TagViewer and the Toolbox
  83         *
  84         * @param layer Optionally pass the layer of the currently selected entity, eg for BugLayers
  85         */
  86                 public function updateSelectionUI(layer:VectorLayer = null):void {
  87                         tagViewer.setEntity(state.selection, layer);
  88                         toolbox.updateSelectionUI();
  89                 }
  90
  91                 public function updateSelectionUIWithoutTagChange():void {
  92                         toolbox.updateSelectionUI();
  93                 }
  94
  95         private function keyDownHandler(event:KeyboardEvent):void {
  96                         keys[event.keyCode]=true;
  97                 }
  98
  99         private function keyUpHandler(event:KeyboardEvent):void {
 100                         if (event.target is TextField) return;                          // not meant for us
 101                         if (keys[event.keyCode]) { delete keys[event.keyCode]; }
 102                         if (FunctionKeyManager.instance().handleKeypress(event.keyCode)) { return; }
 103
 104             if (event.keyCode == 77) { toggleSize(); } // 'M'
 105             var newState:ControllerState = state.processKeyboardEvent(event);
 106             setState(newState);
 107                 }
 108
 109                 /** Is the given key currently pressed? */
 110                 public function keyDown(key:Number):Boolean {
 111                         return Boolean(keys[key]);
 112                 }
 113
 114         private function mapMouseEvent(event:MouseEvent):void {
 115             if (isInteractionEvent(event)) map.stage.focus = map.parent;
 116             if (event.type==MouseEvent.MOUSE_UP && map.dragstate==map.DRAGGING) { return; }
 117
 118             var mapLoc:Point = map.globalToLocal(new Point(event.stageX, event.stageY));
 119             event.localX = mapLoc.x;
 120             event.localY = mapLoc.y;
 121
 122             var newState:ControllerState = state.processMouseEvent(event, null);
 123             setState(newState);
 124         }
 125
 126         public function entityMouseEvent(event:MouseEvent, entity:Entity):void {
 127             if (isInteractionEvent(event)) map.stage.focus = map.parent;
 128             event.stopPropagation();
 129
 130             var mapLoc:Point = map.globalToLocal(new Point(event.stageX, event.stageY));
 131             event.localX = mapLoc.x;
 132             event.localY = mapLoc.y;
 133
 134             var newState:ControllerState = state.processMouseEvent(event, entity);
 135             setState(newState);
 136         }
 137
 138                 private function isInteractionEvent(event:MouseEvent):Boolean {
 139                         switch (event.type) {
 140                                 case MouseEvent.ROLL_OUT:       return false;
 141                                 case MouseEvent.ROLL_OVER:      return false;
 142                                 case MouseEvent.MOUSE_OUT:      return false;
 143                                 case MouseEvent.MOUSE_OVER:     return false;
 144                                 case MouseEvent.MOUSE_MOVE:     return false;
 145                 }
 146                         return true;
 147                 }
 148
 149         /** Exit the current state and switch to a new one. */
 150         public function setState(newState:ControllerState):void {
 151             if ( newState == state )
 152                 return;
 153
 154             if ( state != null )
 155                 state.exitState(newState);
 156             newState.setController(this);
 157             newState.setPreviousState(state);
 158             state = newState;
 159             state.enterState();
 160         }
 161
 162                 /** Given what is currently selected (or not), find the matching ControllerState. */
 163                 public function findStateForSelection(sel:Array):ControllerState {
 164                         if (sel.length==0) { return new NoSelection(); }
 165                         else if (sel.length>1) { return new SelectedMultiple(sel); }
 166                         else if (sel[0] is Way) { return new SelectedWay(sel[0]); }
 167                         else if (sel[0] is Node && Node(sel[0]).hasParentWays) {
 168                                 var way:Way=sel[0].parentWays[0] as Way;
 169                                 return new SelectedWayNode(way, way.indexOfNode(sel[0] as Node));
 170                         } else {
 171                                 return new SelectedPOINode(sel[0] as Node);
 172                         }
 173                 }
 174
 175                 /** Set a mouse pointer. */
 176                 public function setCursor(cursor:Class):void {
 177                         CursorManager.removeAllCursors();
 178                         if (cursor && cursorsEnabled) { CursorManager.setCursor(cursor,2,-4,0); }
 179                 }
 180
 181         private function toggleSize():void {
 182             if (maximised) {
 183                 if (minimiseFunction) {
 184                     ExternalInterface.call(minimiseFunction);
 185                 }
 186
 187                 maximised = false;
 188             } else {
 189                 if (maximiseFunction) {
 190                     ExternalInterface.call(maximiseFunction);
 191                 }
 192
 193                 maximised = true;
 194             }
 195         }
 196
 197                 private function moveHandler(event:MapEvent):void {
 198                         ExternalInterface.call(this.moveFunction,
 199                                    event.params.lon, event.params.lat, event.params.scale,
 200                                    event.params.minlon, event.params.minlat,
 201                                    event.params.maxlon, event.params.maxlat);
 202                 }
 203
 204     }
 205
 206 }