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                 private var hoverEntity:Entity;                 // keep track of the currently rolled-over object, because
  17                                                                                                 // Flash can fire a mouseDown from the map even if you
  18                                                                                                 // haven't rolled out of the way
  19
  20                 public function DrawWay(way:Way, editEnd:Boolean, leaveNodeSelected:Boolean) {
  21                         super(way);
  22                         this.editEnd = editEnd;
  23                         this.leaveNodeSelected = leaveNodeSelected;
  24                         if (way.length==1 && way.getNode(0).parentWays.length==1) {
  25                                 // drawing new way, so keep track of click in case creating a POI
  26                                 lastClick=way.getNode(0);
  27                                 lastClickTime=new Date();
  28                         }
  29                 }
  30
  31                 override public function processMouseEvent(event:MouseEvent, entity:Entity):ControllerState {
  32                         var mouse:Point;
  33                         var node:Node;
  34                         if (entity == null && hoverEntity) { entity=hoverEntity; }
  35                         var focus:Entity = getTopLevelFocusEntity(entity);
  36
  37                         if ( event.type == MouseEvent.MOUSE_UP ) {
  38                                 if ( entity == null ) {
  39                                         node = createAndAddNode(event);
  40                                         resetElastic(node);
  41                                         lastClick=node;
  42                                 } else if ( entity is Node ) {
  43                                         if (entity==lastClick && (new Date().getTime()-lastClickTime.getTime())<1000) {
  44                                                 if (selectedWay.length==1 && selectedWay.getNode(0).parentWays.length==1) {
  45                                                         // double-click to create new POI
  46                                                         node=selectedWay.getNode(0);
  47                                                         stopDrawing();
  48                                                         controller.connection.registerPOI(node);
  49                                                         return new SelectedPOINode(node);
  50                                                 } else {
  51                                                         // double-click at end of way
  52                                                         return stopDrawing();
  53                                                 }
  54                                         } else {
  55                                                 appendNode(entity as Node, MainUndoStack.getGlobalStack().addAction);
  56                                                 controller.map.setHighlight(focus, { showNodesHover: false });
  57                                                 controller.map.setHighlight(selectedWay, { showNodes: true });
  58                                                 resetElastic(entity as Node);
  59                                                 lastClick=entity;
  60                                                 if (selectedWay.getNode(0)==selectedWay.getNode(selectedWay.length-1)) {
  61                                                         return new SelectedWay(selectedWay);
  62                                                 }
  63                                         }
  64                                 } else if ( entity is Way ) {
  65                                         node = createAndAddNode(event);
  66                                         Way(entity).insertNodeAtClosestPosition(node, true,
  67                                             MainUndoStack.getGlobalStack().addAction);
  68                                         resetElastic(node);
  69                                         lastClick=node;
  70                                         controller.map.setHighlight(entity, { showNodesHover: false });
  71                                         controller.map.setHighlight(selectedWay, { showNodes: true });
  72                                 }
  73                                 lastClickTime=new Date();
  74                         } else if ( event.type == MouseEvent.MOUSE_MOVE ) {
  75                                 mouse = new Point(
  76                                                   controller.map.coord2lon(event.localX),
  77                                                   controller.map.coord2latp(event.localY));
  78                                 elastic.end = mouse;
  79                         } else if ( event.type == MouseEvent.ROLL_OVER && focus!=selectedWay) {
  80                                 hoverEntity=focus;
  81                                 controller.map.setHighlight(focus, { showNodesHover: true });
  82                         } else if ( event.type == MouseEvent.MOUSE_OUT  && focus!=selectedWay) {
  83                                 hoverEntity=null;
  84                                 controller.map.setHighlight(focus, { showNodesHover: false });
  85                                 controller.map.setHighlight(selectedWay, { showNodes: true });
  86                                 // ** this call to setHighlight(selectedWay) is necessary in case the hovered way (blue nodes)
  87                                 // shares any nodes with the selected way (red nodes): if they do, they'll be wiped out by the
  88                                 // first call.
  89                                 // Ultimately we should fix this by referring to 'way :selected nodes' instead of 'nodes :selectedway'.
  90                                 // But this will do for now.
  91                                 // We could do with an optional way of calling WayUI.redraw to only do the nodes, which would be a
  92                                 // useful optimisation.
  93                         }
  94
  95                         return this;
  96                 }
  97
  98                 protected function resetElastic(node:Node):void {
  99                         var mouse:Point = new Point(node.lon, node.latp);
 100                         elastic.start = mouse;
 101                         elastic.end = mouse;
 102                 }
 103
 104                 override public function processKeyboardEvent(event:KeyboardEvent):ControllerState {
 105                         switch (event.keyCode) {
 106                                 case 13:                                        return stopDrawing();
 107                                 case 27:                                        return stopDrawing();
 108                                 case Keyboard.BACKSPACE:        return backspaceNode(MainUndoStack.getGlobalStack().addAction);
 109                                 case 82:                                        repeatTags(selectedWay); return this;
 110                         }
 111                         var cs:ControllerState = sharedKeyboardEvents(event);
 112                         return cs ? cs : this;
 113                 }
 114
 115                 protected function stopDrawing():ControllerState {
 116                         if ( selectedWay.length<2) {
 117                                 controller.map.setHighlight(selectedWay, { showNodes: false });
 118                                 selectedWay.remove(MainUndoStack.getGlobalStack().addAction);
 119                                 // delete controller.map.ways[selectedWay.id];
 120                                 return new NoSelection();
 121                         } else if ( leaveNodeSelected ) {
 122                             return new SelectedWayNode(selectedWay, editEnd ? selectedWay.length - 1 : 0);
 123                         } else {
 124                             return new SelectedWay(selectedWay);
 125                         }
 126                         return this;
 127                 }
 128
 129                 public function createAndAddNode(event:MouseEvent):Node {
 130                     var undo:CompositeUndoableAction = new CompositeUndoableAction("Add node");
 131
 132                         var lat:Number = controller.map.coord2lat(event.localY);
 133                         var lon:Number = controller.map.coord2lon(event.localX);
 134                         var node:Node = controller.connection.createNode({}, lat, lon, undo.push);
 135                         appendNode(node, undo.push);
 136
 137                         MainUndoStack.getGlobalStack().addAction(undo);
 138                         return node;
 139                 }
 140
 141                 protected function appendNode(node:Node, performAction:Function):void {
 142                         if ( editEnd )
 143                                 selectedWay.appendNode(node, performAction);
 144                         else
 145                                 selectedWay.insertNode(0, node, performAction);
 146                 }
 147
 148                 protected function backspaceNode(performAction:Function):ControllerState {
 149                         var node:Node;
 150                         var undo:CompositeUndoableAction = new CompositeUndoableAction("Remove node");
 151                         var newDraw:int;
 152                         if (editEnd) {
 153                                 node=selectedWay.getNode(selectedWay.length-1);
 154                                 selectedWay.removeNodeByIndex(selectedWay.length-1, undo.push);
 155                                 newDraw=selectedWay.length-2;
 156                         } else {
 157                                 node=selectedWay.getNode(0);
 158                                 selectedWay.removeNodeByIndex(0, undo.push);
 159                                 newDraw=0;
 160                         }
 161                         if (node.numParentWays==1) {
 162                                 controller.connection.unregisterPOI(node);
 163                                 node.remove(undo.push);
 164                         }
 165                         MainUndoStack.getGlobalStack().addAction(undo);
 166
 167                         if (newDraw>=0 && newDraw<=selectedWay.length-1) {
 168                                 var mouse:Point = new Point(selectedWay.getNode(newDraw).lon, selectedWay.getNode(newDraw).latp);
 169                                 elastic.start = mouse;
 170                                 return this;
 171                         } else {
 172                                 return new NoSelection();
 173                         }
 174                 }
 175
 176                 override public function enterState():void {
 177                         super.enterState();
 178
 179                         var node:Node = selectedWay.getNode(editEnd ? selectedWay.length - 1 : 0);
 180                         var start:Point = new Point(node.lon, node.latp);
 181                         elastic = new Elastic(controller.map, start, start);
 182                         Globals.vars.root.addDebug("**** -> "+this);
 183                 }
 184                 override public function exitState():void {
 185                         super.exitState();
 186                         elastic.removeSprites();
 187                         elastic = null;
 188                         Globals.vars.root.addDebug("**** <- "+this);
 189                 }
 190                 override public function toString():String {
 191                         return "DrawWay";
 192                 }
 193         }
 194 }