// proxy url
var _proxy = "http://searchbox.mapbar.com:80/publish/common/proxy.jsp";

function getUrlText(url) {
	var text = "";
	var myAjax = new Ajax.Request( url, { 
		method: 'get', parameters: "", encoding: "UTF-8", asynchronous: false,
	  onComplete: function (originalRequest) {
	    if (originalRequest.responseText) {
	  		text = originalRequest.responseText.replace(/\n/gi, '');
	  	}
		},
		onException: function (req, ex) {
	  	//alert(ex.message);
		}
  });
  return text;
}
function getUrlXml(url) {
	var text = "";
	var myAjax = new Ajax.Request( url, { 
		method: 'get', parameters: "", encoding: "UTF-8", asynchronous: false,
	  onComplete: function (originalRequest) {
	    if (originalRequest.responseXML) {
	  		text = originalRequest.responseXML;
	  	}
		},
		onException: function (req, ex) {
	  	alert(ex.message);
		}
  });
  return text;
}

function getCityByName(cityName, proxy){
	if(cityName == "-1" || 
			cityName.indexOf("省") >=0 ||
			cityName.indexOf("直辖市") >=0 ||
			cityName.indexOf("自治区") >=0 ||
			cityName.indexOf("特别行政区") >=0){
		alert("请选择省会中的城市!");
		return  {cityName:cityName, cityCode:"", center:""};
	} else {
		try {
			var xml = getUrlXml(((proxy)?proxy:_proxy)+"?api=getCityByName&encode=UTF-8&name="+encodeURIComponent(cityName));
			return {cityName:cityName, cityCode:getNodeValue(xml, "code"), 
				center:getNodeValue(xml, "centerlatlon")};
		}catch(e){
		  return {cityName:cityName, cityCode:"", center:""};
		}	
	}	
}

function getCityOptionByName(select, cityName){
	var ln = select.options.length;
	while (ln--){
	  var option = select.options[ln];
	  if (option.innerHTML.indexOf(cityName)>=0) {
	    option.selected = true;
	    return option.value;
	  }
		select.options[0].value;
	}
}	

function getPoiByKeyword(cityName, keyword, proxy){
  if (!cityName || !keyword ) return ""; 
  try {
	  var xml = getUrlXml(((proxy)?proxy:_proxy)+"?api=keyword&encode=UTF-8&city="+encodeURIComponent(cityName)+
	  	"&keyword="+encodeURIComponent(keyword));
  	return {name:getNodeValue(xml, "name"), latLon:getNodeValue(xml, "strlatlon")};
	} catch (e) {
	  return {name:keyword, latLon:""};
  }	
}

function getPoiByNids(cid, cityName, nid, width, height){
  if (!nid || !cityName ) return "";
  var result = {cityName:cityName, pois:[], center:"", scale:8};
  try {
	  var xml = getUrlXml("http://searchbox.mapbar.com:80/publish/service/poiList.jsp?CID="+cid+"&cityName="+encodeURIComponent(cityName)+"&nid="+nid+"&width="+width+"&height="+height);
	  result["center"] = getNodeValue(xml, "center");
	  result["scale"] = getNodeValue(xml, "scale");
	  var items = xml.getElementsByTagName("item");
	  for(var i=0; i<items.length;i++) {
	    var item = items[i];
	  	result["pois"].push({nid:nid, cityName:cityName, 
	  	  name:getNodeValue(item, "name"), 
	  	  address:getNodeValue(item, "address"), 
	  	  phone:getNodeValue(item, "phone"), 
	  	  latLon:getNodeValue(item, "strlatlon"), 
	  	  detail:getNodeValue(item, "briefDescription"),
	  	  cText1:getNodeValue(item, "cText1"),
	  	  cText2:getNodeValue(item, "cText2"),
	  	  cText3:getNodeValue(item, "cText3"),
	  	  cText4:getNodeValue(item, "cText4"),
	  	  cText5:getNodeValue(item, "cText5"),
	  	  cText6:getNodeValue(item, "cText6"),
	  	  cText7:getNodeValue(item, "cText7"),
	  	  cText8:getNodeValue(item, "cText8"),
	  	  dNumber1:getNodeValue(item, "dNumber1"),
	  	  dNumber2:getNodeValue(item, "dNumber2"),
	  	  dNumber3:getNodeValue(item, "dNumber3"),
	  	  dNumber4:getNodeValue(item, "dNumber4")});
  	}
	} catch (e) {
	  alert(e);
  }	
  return result;
}

function getNodeValue(item, node) {
  var text = "";
  try { text = item.getElementsByTagName(node)[0].firstChild.nodeValue; } catch(e) {};
  return text;
}