/*----------------    FILE HEADER ---------------------------------------
 This file is part of Geoide.
 Copyright (C) 2005-2006 by:
 IDgis B.V.
 http://www.idgis.nl

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

 Contact:

 Herman Assink
 IDgis bv
 P.O. Box 15
 7450 AA Holten
 The Netherlands
 E-Mail: herman.assink@idgis.nl

 * @version 1.4.0
 * @author IDgis team
 * 
 ------------------------------------------------------------------------*/
import nl.idgis.giclient.framework.bars.Bar;
import nl.idgis.giclient.gis.MapMouseMoveListener;
import nl.idgis.giclient.gis.ZoomListener;
import nl.idgis.giclient.Ruler;
import nl.idgis.giclient.gis.Map;
import nl.idgis.giclient.gis.SRSChangeListener;
import nl.idgis.giclient.gis.ActiveMapListener;
import nl.idgis.giclient.util.Strings;

import mx.controls.ComboBox;
import mx.core.UIObject;

class nl.idgis.giclient.framework.bars.ScaleBar extends Bar 
	  implements ZoomListener, MapMouseMoveListener, ActiveMapListener, SRSChangeListener {

    private var ruler:Ruler = null;    
    private var srs:Array = null;

    function setRuler(ruler:Ruler):Void {
        this.ruler = ruler;

        ruler.getGIS().gisEventDispatcher.addZoomListener(this);
        ruler.getGIS().gisEventDispatcher.addMapMouseMoveListener(this);
        ruler.getGIS().gisEventDispatcher.addSRSChangeListener(this);
        ruler.getGIS().gisEventDispatcher.addActiveMapListener(this);

        drawAll();
    }

    function onZoom():Void {
        this["scaleInput"].text = Math.round(ruler.getGIS().getCurrentCentreScale().getScale());
    }

    function onMapMouseMove(x:Number, y:Number):Void {
    	if(ruler.getSRSInfo().isProjection(
        	ruler.getGIS().getActiveMap().getSRS()))
        {
    		var xStr:String = "" + Math.round(x * 100) / 100;
    		var yStr:String = "" + Math.round(y * 100) / 100;
    		
    		if((Math.round(x * 100) % 100) == 0)
    			xStr += ".00";
    		else if((Math.round(x * 100) % 10) == 0)
    			xStr += "0";
    		
    		if((Math.round(y * 100) % 100) == 0)
    			yStr += ".00";
    		else if((Math.round(y * 100) % 10) == 0)
    			yStr += "0";    		
    		
        	this["coordTextField"].text = "x: " +  xStr + " y: " + yStr;
        } else
        {
        	var xStr:String = "" + Math.round(x * 10000) / 10000;
    		var yStr:String = "" + Math.round(y * 10000) / 10000;
    		
    		if((Math.round(x * 10000) % 10000) == 0)
    			xStr += ".0000";
    		else if((Math.round(x * 10000) % 1000) == 0)
    			xStr += "000";
    		else if((Math.round(x * 10000) % 100) == 0)
    			xStr += "00";
    		else if((Math.round(x * 10000) % 10) == 0)
    			xStr += "0";
    		
    		if((Math.round(y * 10000) % 10000) == 0)
    			yStr += ".0000";
    		else if((Math.round(y * 10000) % 1000) == 0)
    			yStr += "000";
    		else if((Math.round(y * 10000) % 100) == 0)
    			yStr += "00";
    		else if((Math.round(y * 10000) % 10) == 0)
    			yStr += "0";    	
    			       
        	this["coordTextField"].text = "lat: " +  xStr + " lon: " + yStr;
        }        	
    }
    
    private function drawScaleInput():Void {
			var scales:Array = ruler.getGIS().getActiveMap().getScales();
			if(scales != null && scales.length != 0) {
				attachMovie("ComboBox", "scaleInput", 6);
				for(var i:Number = 0; i < scales.length; i++) {
					this["scaleInput"].addItem(scales[i]);
				}
				this["scaleInput"].editable = true;
				this["scaleInput"].addEventListener("close", onEnter);
			}
			else {
	        	attachMovie("TextInput", "scaleInput", 6);
			}
				
			this["scaleInput"].restrict = "0-9";
			if(ruler.getGIS().getActiveMap().getSupportedSRS().length > 1) {
				this["scaleInput"]._x = 55;
				this["scaleInput"]._y = 21;
			}
			else {
				this["scaleInput"]._x = 95;
				this["scaleInput"]._y = 3;
			}
			this["scaleInput"].setStyle("fontFamily", "_sans");
			this["scaleInput"].setStyle("fontSize", 10);
			this["scaleInput"].setSize(80, 17);
			this["scaleInput"].addEventListener("enter", onEnter);	      
			this["scaleInput"].text = Math.round(ruler.getGIS().getCurrentCentreScale().getScale());
    }

    private function drawAll():Void {
    	var srs:Array = ruler.getGIS().getActiveMap().getSupportedSRS();
        var textFormat:TextFormat = new TextFormat();
        textFormat.font = "_sans";
        textFormat.size = 10;

        attachMovie("NavigationButton", "NavW", 1, {_x: 20, _y: 20, gism: ruler.getGIS(), buttonTip: ( Strings.getFile("Geoide").getString("Left"))});
        attachMovie("NavigationButton", "NavO", 2, {_x: 20, _y: 20, gism: ruler.getGIS(), buttonTip: ( Strings.getFile("Geoide").getString("Right"))});
        attachMovie("NavigationButton", "NavN", 3, {_x: 20, _y: 20, gism: ruler.getGIS(), buttonTip: ( Strings.getFile("Geoide").getString("Up"))});
        attachMovie("NavigationButton", "NavZ", 4, {_x: 20, _y: 20, gism: ruler.getGIS(), buttonTip:( Strings.getFile("Geoide").getString("Down"))});
        
        var labelText:String = "1 :";
        createTextField("textField", 5, 40, srs.length > 1 ? 21 : 5, 55, 20);
        this["textField"].setNewTextFormat(textFormat);
        this["textField"].text = labelText;				   

        createTextField("coordTextField", 7, srs.length > 1 ? 140 : 45, 21, 140, 20);
        this["coordTextField"].setNewTextFormat(textFormat);
        if(ruler.getSRSInfo().isProjection(
        	ruler.getGIS().getActiveMap().getSRS()))
        		this["coordTextField"].text = "x: y:";
        else
        		this["coordTextField"].text = "lat: lon:";        
        
        if(srs.length > 1) {
	        createTextField("srsLabel", 8, 45, 3, 100, 20);
	        this["srsLabel"].setNewTextFormat(textFormat);
	        this["srsLabel"].text = "SRS:";
	        
	        attachMovie("ComboBox", "cb", 9);
	        this["cb"]._x = 85;
	        this["cb"]._y = 2;
	        this["cb"].setStyle("fontFamily", "_sans");
			this["cb"].setStyle("fontSize", 10);
			this["cb"].setSize(195, 17);
			this["cb"].addEventListener("change", this);
			setWidth(290);			
        }
        else {
        	setWidth(190);
        }
        afterChangeActiveMap();
        	
    }
    
    function onSRSChange():Void {    	  
    		var map:Map = ruler.getGIS().getActiveMap();				
				
				var currentSrs:String = map.getSRS();
				for(var i:Number = 0; i < srs.length; i++)
				{					
					if(srs[i] == currentSrs)
					{
						this["cb"].selectedIndex = i;
						break;
					}
				}				
				
				this["cb"].enabled = srs.length > 1;						
    }
    
    function change(eventObject) {
    	  this["cb"].enabled = false;
    		ruler.getGIS().setSRS(srs[eventObject.target.selectedIndex]);
    }

    function onEnter():Void {
    	  var newScale:Number = Number(_parent["scaleInput"].text);    	  
    	  if(Math.round(_parent.ruler.getGIS().getCurrentScale()) != newScale) {
        	_parent.ruler.getGIS().setCurrentScale(newScale);
    	  }
    }

		function beforeChangeActiveMap() : Void {
		}
	
		function afterChangeActiveMap() : Void {			 	
				srs = ruler.getGIS().getActiveMap().getSupportedSRS();
				if(srs.length > 1) {
					var currentSrs:String = ruler.getGIS().getActiveMap().getSRS();
					
					this["cb"].removeAll();
					for(var i:Number = 0; i < srs.length; i++)
					{
							this["cb"].addItem(ruler.getSRSInfo().getTitle(srs[i]));
							if(srs[i] == currentSrs)
								this["cb"].selectedItem = i;
					}
				}				
				
				if(this["scaleInput"] != null) {
					this["scaleInput"].removeMovieClip();
				}				
				_global["setTimeout"](this, "drawScaleInput", 1);			
		}
}