<?php
# $Id:mod_changeEPSG.php 3397 2009-01-02 15:24:40Z christoph $
# http://www.mapbender.org/index.php/mod_changeEPSG.php
# Copyright (C) 2002 CCGIS 
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# 
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

require(dirname(__FILE__)."/../php/mb_validateSession.php");

include(dirname(__FILE__)."/../include/dyn_js.php");

echo "var myTarget = '".$e_target[0]."';";
echo "var myId = '".$e_id."';";
?>
var exists = false;

eventAfterMapRequest.register(function () {
	mod_changeEPSG_setBox();
});

eventInit.register(function () {
//	mod_changeEPSG_init();
});

function mod_changeEPSG_setBox(){
	var myEpsg = mb_mapObj[0].epsg;
	if (arguments.length === 1) {
		myEpsg = arguments[0];
	}
	$("#"+myId+" option").each(function () {
		if (this.value == myEpsg) {
			isEPSG = true;
			$(this).attr("selected", "selected");
		}
	});
}

function mod_changeEPSG () {
	var callback;
	if (arguments.length > 0 && typeof arguments[0] === "function") {
		callback = arguments[0];
	}
	var srsArray = [];
	for (var i = 0; i < mb_mapObj.length; i++) {
		var currentSrs = {
			"frameName" : mb_mapObj[i].elementName,
			"epsg" : mb_mapObj[i].epsg,
			"extent" : mb_mapObj[i].extent,
			"width" : mb_mapObj[i].width,
			"height" : mb_mapObj[i].height
		};
		srsArray.push(currentSrs);
	}
	for (var i = 0; i < wms.length; i++) {
		var ext = wms[i].getBoundingBoxBySrs(mb_mapObj[0].epsg);
		if (ext === null) {
			continue;
		}
		var currentSrs = {
			"wms" : wms[i].wms_id,
			"epsg" : mb_mapObj[0].epsg,
			"extent" : ext.toString(),
			"width" : mb_mapObj[0].width,
			"height" : mb_mapObj[0].height
		};
		srsArray.push(currentSrs);
	}

	var req = new Mapbender.Ajax.Request({
		"method":"changeEpsg",
		"parameters":{
			"srs":srsArray,
			"newSrs": $("#"+myId).get(0).value
		}
	});
	$.ajaxSetup({async:false});
	req.send("../php/mod_changeEPSG_server.php", function (obj, success, message) {
		if (!success) {
			new Mb_exception("!!!!!!"+message);
			return;
		}
		
		var newExtent = obj;
		var mapObjNames = [];
		for(var i = 0; i < newExtent.length; i++) {
			if (newExtent[i].frameName) {
				mapObjNames.push(newExtent[i].frameName);
			}
		}
		for(var i = 0; i < newExtent.length; i++) {
			if (newExtent[i].wms) {
				for (var j = 0; j < wms.length; j++) {
					if (wms[j].wms_id == newExtent[i].wms) {
						wms[j].setBoundingBoxBySrs(
							newExtent[i].newSrs,
							new Extent(
								parseFloat(newExtent[i].minx),
								parseFloat(newExtent[i].miny),
								parseFloat(newExtent[i].maxx),
								parseFloat(newExtent[i].maxy)
							)
						);
					}
				}
						
				for (var k = 0; k < mapObjNames.length; k++) {
					var map = getMapObjByName(mapObjNames[k]);
					for (var j = 0; j < map.wms.length; j++) {
						if (map.wms[j].wms_id == newExtent[i].wms) {
							map.wms[j].setBoundingBoxBySrs(
								newExtent[i].newSrs,
								new Extent(
									parseFloat(newExtent[i].minx),
									parseFloat(newExtent[i].miny),
									parseFloat(newExtent[i].maxx),
									parseFloat(newExtent[i].maxy)
								)
							);
						}
						break;
					}
				}
				continue;
			}
			
			var mainMap = null;
			if(newExtent[i].frameName == myTarget){
				var ind = getMapObjIndexByName(myTarget);
				
				for(var ii = 0; ii < mb_mapObj[ind].mb_MapHistoryObj.length; ii++) {
					if (mb_mapObj[ind].mb_MapHistoryObj[ii].epsg == newExtent[i].newSrs) {
						exists = ii;
						var goback = true;
					}
				}

				if (goback) {
					var extArray = mb_mapObj[ind].mb_MapHistoryObj[exists].extent.split(",");
					var newExt = new Extent(
						parseFloat(extArray[0]),
						parseFloat(extArray[1]),
						parseFloat(extArray[2]),
						parseFloat(extArray[3])
					);
					mb_mapObj[ind].setSrs({
						srs: newExtent[i].newSrs,
						extent: newExt,
						displayWarning: false
					});
				}
				else{
					mb_mapObj[ind].setSrs({
						srs: newExtent[i].newSrs,
						extent: new Extent(
							parseFloat(newExtent[i].minx),
							parseFloat(newExtent[i].miny),
							parseFloat(newExtent[i].maxx),
							parseFloat(newExtent[i].maxy)
						),
						displayWarning: false
					});
				}
			}
			else {
				mainMap = getMapObjByName(newExtent[i].frameName);
				mainMap.setSrs({
					srs: newExtent[i].newSrs,
					extent: new Extent(
						parseFloat(newExtent[i].minx),
						parseFloat(newExtent[i].miny),
						parseFloat(newExtent[i].maxx),
						parseFloat(newExtent[i].maxy)
					),
					displayWarning: false
				});
			}
			setTimeout(function () {
				if (typeof callback === "function") {
					callback();
				}
				else {
					for (var k = 0; k < mapObjNames.length; k++) {
						var map = getMapObjByName(mapObjNames[k]);
						map.setMapRequest();
					}
				}
			}, 200);
		}
	});
	$.ajaxSetup({async:true});
};

$("#"+myId).change(function () {
	mod_changeEPSG();
});