net/systemeD/potlatch2/controller/DrawWay.as

   1 package net.systemeD.potlatch2.controller {
   2         import flash.events.*;
   3         import flash.geom.*;
   4         import flash.ui.Keyboard;
   5         import net.systemeD.potlatch2.EditController;
   6         import net.systemeD.halcyon.connection.*;
   7         import net.systemeD.halcyon.Elastic;
   8         import net.systemeD.halcyon.Globals;
   9
  10         public class DrawWay extends SelectedWay {
  11                 private var elastic:Elastic;
  12                 private var editEnd:Boolean;
  13                 private var leaveNodeSelected:Boolean;
  14                 private var lastClick:Entity=null;
  15                 private var lastClickTime:Date;
  16
  17                 public function DrawWay(way:Way, editEnd:Boolean, leaveNodeSelected:Boolean) {
  18                         super(way);
  19                         this.editEnd = editEnd;
  20                         this.leaveNodeSelected = leaveNodeSelected;
  21                         if (way.length==1 && way.getNode(0).parentWays.length==1) {
  22                                 // drawing new way, so keep track of click in case creating a POI
  23                                 lastClick=way.getNode(0);
  24                                 lastClickTime=new Date();
  25                         }
  26                 }
  27
  28                 override public function processMouseEvent(event:MouseEvent, entity:Entity):ControllerState {
  29                         var mouse:Point;
  30                         var node:Node;
  31                         var focus:Entity = getTopLevelFocusEntity(entity);
  32
  33                         if ( event.type == MouseEvent.MOUSE_UP ) {
  34                                 if ( entity == null ) {
  35                                         node = createAndAddNode(event);
  36                                         resetElastic(node);
  37                                         lastClick=node;
  38                                 } else if ( entity is Node ) {
  39                                         if (entity==lastClick && (new Date().getTime()-lastClickTime.getTime())<1000) {
  40                                                 if (selectedWay.length==1 && selectedWay.getNode(0).parentWays.length==1) {
  41                                                         // double-click to create new POI
  42                                                         node=selectedWay.getNode(0);
  43                                                         stopDrawing();
  44                                                         controller.connection.registerPOI(node);
  45                                                         return new SelectedPOINode(node);
  46                                                 } else {
  47                                                         // double-click at end of way
  48                                                         return stopDrawing();
  49                                                 }
  50                                         } else {
  51                                                 appendNode(entity as Node, MainUndoStack.getGlobalStack().addAction);
  52                                                 controller.map.setHighlight(focus, { showNodesHover: false });
  53                                                 controller.map.setHighlight(selectedWay, { showNodes: true });
  54                                                 resetElastic(entity as Node);
  55                                                 lastClick=entity;
  56                                                 if (selectedWay.getNode(0)==selectedWay.getNode(selectedWay.length-1)) {
  57                                                         return new SelectedWay(selectedWay);
  58                                                 }
  59                                         }
  60                                 } else if ( entity is Way ) {
  61                                         node = createAndAddNode(event);
  62                                         Way(entity).insertNodeAtClosestPosition(node, true,
  63                                             MainUndoStack.getGlobalStack().addAction);
  64                                         resetElastic(node);
  65                                         lastClick=node;
  66                                         controller.map.setHighlight(entity, { showNodesHover: false });
  67                                         controller.map.setHighlight(selectedWay, { showNodes: true });
  68                                 }
  69                                 lastClickTime=new Date();
  70                         } else if ( event.type == MouseEvent.MOUSE_MOVE ) {
  71                                 mouse = new Point(
  72                                                   controller.map.coord2lon(event.localX),
  73                                                   controller.map.coord2latp(event.localY));
  74                                 elastic.end = mouse;
  75                         } else if ( event.type == MouseEvent.ROLL_OVER && focus!=selectedWay) {
  76                                 controller.map.setHighlight(focus, { showNodesHover: true });
  77                         } else if ( event.type == MouseEvent.MOUSE_OUT  && focus!=selectedWay) {
  78                                 controller.map.setHighlight(focus, { showNodesHover: false });
  79                                 controller.map.setHighlight(selectedWay, { showNodes: true });
  80                                 // ** this call to setHighlight(selectedWay) is necessary in case the hovered way (blue nodes)
  81                                 // shares any nodes with the selected way (red nodes): if they do, they'll be wiped out by the
  82                                 // first call.
  83                                 // Ultimately we should fix this by referring to 'way :selected nodes' instead of 'nodes :selectedway'.
  84                                 // But this will do for now.
  85                                 // We could do with an optional way of calling WayUI.redraw to only do the nodes, which would be a
  86                                 // useful optimisation.
  87                         }
  88
  89                         return this;
  90                 }
  91
  92                 protected function resetElastic(node:Node):void {
  93                         var mouse:Point = new Point(node.lon, node.latp);
  94                         elastic.start = mouse;
  95                         elastic.end = mouse;
  96                 }
  97
  98                 override public function processKeyboardEvent(event:KeyboardEvent):ControllerState {
  99                         switch (event.keyCode) {
 100                                 case 13:                                        return stopDrawing();
 101                                 case 27:                                        return stopDrawing();
 102                                 case Keyboard.BACKSPACE:        return backspaceNode(MainUndoStack.getGlobalStack().addAction);
 103                                 case 82:                                        repeatTags(selectedWay); return this;
 104                         }
 105                         var cs:ControllerState = sharedKeyboardEvents(event);
 106                         return cs ? cs : this;
 107                 }
 108
 109                 protected function stopDrawing():ControllerState {
 110                         if ( selectedWay.length<2) {
 111                                 controller.map.setHighlight(selectedWay, { showNodes: false });
 112                                 selectedWay.remove(MainUndoStack.getGlobalStack().addAction);
 113                                 // delete controller.map.ways[selectedWay.id];
 114                                 return new NoSelection();
 115                         } else if ( leaveNodeSelected ) {
 116                             return new SelectedWayNode(selectedWay, editEnd ? selectedWay.length - 1 : 0);
 117                         } else {
 118                             return new SelectedWay(selectedWay);
 119                         }
 120                         return this;
 121                 }
 122
 123                 public function createAndAddNode(event:MouseEvent):Node {
 124                     var undo:CompositeUndoableAction = new CompositeUndoableAction("Add node");
 125
 126                         var lat:Number = controller.map.coord2lat(event.localY);
 127                         var lon:Number = controller.map.coord2lon(event.localX);
 128                         var node:Node = controller.connection.createNode({}, lat, lon, undo.push);
 129                         appendNode(node, undo.push);
 130
 131                         MainUndoStack.getGlobalStack().addAction(undo);
 132                         return node;
 133                 }
 134
 135                 protected function appendNode(node:Node, performAction:Function):void {
 136                         if ( editEnd )
 137                                 selectedWay.appendNode(node, performAction);
 138                         else
 139                                 selectedWay.insertNode(0, node, performAction);
 140                 }
 141
 142                 protected function backspaceNode(performAction:Function):ControllerState {
 143                         var node:Node;
 144                         var undo:CompositeUndoableAction = new CompositeUndoableAction("Remove node");
 145                         var newDraw:int;
 146                         if (editEnd) {
 147                                 node=selectedWay.getNode(selectedWay.length-1);
 148                                 selectedWay.removeNodeByIndex(selectedWay.length-1, undo.push);
 149                                 newDraw=selectedWay.length-2;
 150                         } else {
 151                                 node=selectedWay.getNode(0);
 152                                 selectedWay.removeNodeByIndex(0, undo.push);
 153                                 newDraw=0;
 154                         }
 155                         if (node.numParentWays==1) {
 156                                 controller.connection.unregisterPOI(node);
 157                                 node.remove(undo.push);
 158                         }
 159                         MainUndoStack.getGlobalStack().addAction(undo);
 160
 161                         if (newDraw>=0 && newDraw<=selectedWay.length-1) {
 162                                 var mouse:Point = new Point(selectedWay.getNode(newDraw).lon, selectedWay.getNode(newDraw).latp);
 163                                 elastic.start = mouse;
 164                                 return this;
 165                         } else {
 166                                 return new NoSelection();
 167                         }
 168                 }
 169
 170                 override public function enterState():void {
 171                         super.enterState();
 172
 173                         var node:Node = selectedWay.getNode(editEnd ? selectedWay.length - 1 : 0);
 174                         var start:Point = new Point(node.lon, node.latp);
 175                         elastic = new Elastic(controller.map, start, start);
 176                         Globals.vars.root.addDebug("**** -> "+this);
 177                 }
 178                 override public function exitState():void {
 179                         super.exitState();
 180                         elastic.removeSprites();
 181                         elastic = null;
 182                         Globals.vars.root.addDebug("**** <- "+this);
 183                 }
 184                 override public function toString():String {
 185                         return "DrawWay";
 186                 }
 187         }
 188 }