/**
* Geo maps for papaya CMS 5: Markers script 
*
* @copyright 2007 by Martin Kelm - All rights reserved.
* @link http://www.idxsolutions.de
* @licence GNU General Public Licence (GPL) 2 http://www.gnu.org/copyleft/gpl.html
*
* You can redistribute and/or modify this script under the terms of the GNU General Public
* License (GPL) version 2, provided that the copyright and license notes, including these
* lines, remain unmodified. This script 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.
* 
* @package module_geomaps
* @author Martin Kelm <martinkelm@idxsolutions.de>
*/

var markers = null;
var markerAction = null;
var markerRotationTime = 5000;

function addMarkers(url, params) {
	xmlDocument = getMarkersXML(url, params);
	if (xmlDocument) {
	  parseMarkersXML(xmlDocument);
	}
}

function getMarkersXML(url, params) {
  // xml http request for Mozilla or IE7
  if (window.XMLHttpRequest) {
    xmlRequest = new XMLHttpRequest();
    if (xmlRequest.overrideMimeType) {
      xmlRequest.overrideMimeType('text/xml');
    }
  // xml http request for old IE browsers
  } else if (window.ActiveXObject) {
    try {
    	xmlRequest = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
      	xmlRequest = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {}
    }
  }
  // Request xml data
  var xmlData = '';
  if (typeof(xmlRequest) != "undefined") {
    xmlRequest.open('POST', url, false);
    xmlRequest.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  	xmlRequest.send(params);
    if (xmlRequest.readyState == 4) {
      if (xmlRequest.status == 200) {
        xmlData = xmlRequest.responseXML;
      }
    }
    
  }
  return xmlData;
}

function parseMarkersXML(xmlData) {
	markers = new Array();
  var placemarkNodes = xmlData.getElementsByTagName("Placemark");
  // go through placemarks nodes and set them into the markers array
	for (i = 0; i < placemarkNodes.length; i++) {
    var coordinates = Array();
    var description = '';
    // parse coordinates
    var tmp = placemarkNodes[i].getElementsByTagName("Point")[0];
    if (tmp) {
      tmp = tmp.getElementsByTagName("coordinates")[0];
      if (tmp) {
        tmp = tmp.firstChild;
        if (tmp) {
          coordinates = tmp.data.split(",");
        }
      }
    }
    // parse description
    tmp = placemarkNodes[i].getElementsByTagName("description")[0];
    if (tmp) {
      description = tmp.firstChild.data;
    }
    // set marker
    if (description != '' && coordinates.length >= 2) {
      markers[i] = Array();
		  markers[i][0] = 2;
		  markers[i][1] = description;
      markers[i][2] = coordinates[0]; // Latitude
		  markers[i][3] = coordinates[1]; // Longitude
    }		
	}
}

function getMarkers(action, mode, setRotationTime) {
	markerAction = action;
	if (mode == 'rotation') {
		if (typeof(setRotationTime) != "undefined" && 
        setRotationTime > 0 && setRotationTime != markerRotationTime) {
			markerRotationTime = setRotationTime;
		}
		rotateMarker(0);
	} else {
		for (var i = 0; i < markers.length; i++) {
			setMarker(getMarkerPoint(markers[i][2], markers[i][3]), markers[i][1]);
		}
	}
}

function getPolyline(color, width) {
	if (markers.length > 0) {
		setPolyline(color);
	}
}