//////////////////////////////////////////////////////////////////////////////////
// 日本の京都の住所表記に対応したジオコーダ「ジオどすⅡ」
// GoogleMapsAPIのGClientGeocoderの拡張
// gclientgeocoder_geodosu2extension.js
//
//      by Naoki Ueda, Geodosu Project
//      Copyright 2009 All rights reserved
// 
// Enhance GClientGeocoder.getLatLng function with GEODOSU2 geocoder.
// 
// GEODOSU2 geocoder is a specialized geocoder for tradittional
// address expression used in KYOTO city, JAPAN.
// 
// First, run original getLatLng() function normally.
// If geocoding failed, then run GEODOSU geocoder.
// 
// How to use:
// 1. include this file AFTER Google Maps API script.
// <script src="http://api.geodosu.com/v2/gclientgeocoder_geodosu2extension.js?apikey=xxxxxxxxxx" type="text/javascript"></script>
// 
// 2. use GClientGeocoderWithGeodosu class instead of GClientGeocoderclass
//   Example:
//     //geocoder = new GClientGeocoder();			//original code
//     geocoder = new GClientGeocoderWithGeodosu(preprocessor);	//GEODOSU is available
//     
//     * preprocessor: whether to call Geodosu2 geocode preprosessor API
//
// 3. That is all! Now getLatLng() can handle tradittional address of KYOTO city..
// Varsion 2.0	15-Sep-2009
//
//////////////////////////////////////////////////////////////////////////////////
GClientGeocoderWithGeodosu=function(preprocessor){
	if(!window.___api_geodosu_com_global_object)window.___api_geodosu_com_global_object=new Object();
	var _global=window.___api_geodosu_com_global_object;
	_global.preprocessor=preprocessor;
	_global.timeout=100000;
	_global.geodosu2=new Object();
	
	var baseobj=new GClientGeocoder();	//inherit GClientGeocoder class
	baseobj.getLatLng_original=baseobj.getLatLng;

	baseobj.getLatLng_geodosu = function(address){
		var _global=window.___api_geodosu_com_global_object;
		_global.geodosu2.lat = null;
		_global.geodosu2.lon = null;
		_global.geodosu2.geocoded = 0;
		var url="http://api.geodosu.com/v2/geodosu2?&callback=window.___api_geodosu_com_global_object.callbackfunc&address="+encodeURI(address)+"&output=json&preprocess=true&apikey=xxxxxxxxxx";
		_global.callbackfunc=function(jsonobj){
			//ジオどすⅡAPIのコールバック
			clearTimeout(window.___api_geodosu_com_global_object.geodosutimer);
			if(jsonobj.result.geocoded-0==1){
				//Geodosu2
				_global.geodosu2.lat = jsonobj.result.coordinates.point.lat;
				_global.geodosu2.lon = jsonobj.result.coordinates.point.lon;
				_global.geodosu2.geocoded = 1;
				_global.geodosu2.detect_addr = jsonobj.result.addresses.detected.kanji;
				_global.geodosu2.addr = jsonobj.result.addresses.input;
				_global.geodosu2.pp_addr = jsonobj.result.addresses.pre_processed;
			}else{
				_global.geodosu2.detect_addr = null;
				_global.geodosu2.addr = jsonobj.result.addresses.input;
				_global.geodosu2.pp_addr = jsonobj.result.addresses.pre_processed;
			}
			//Googleジオコーダを呼ぶ
			if(_global.preprocessor==true){
				baseobj.getLatLng_original(_global.geodosu2.pp_addr,function(point){
					if(!point){
						//前処理住所で検索失敗
						baseobj.getLatLng_original(window.___api_geodosu_com_global_object.geodosu2.addr,function(point){
							if(!point){
								//元の住所で検索失敗
									if(window.___api_geodosu_com_global_object.geodosu2.geocoded == 1){
										//ジオどすの結果データを使う
										point = new GLatLng(window.___api_geodosu_com_global_object.geodosu2.lat, window.___api_geodosu_com_global_object.geodosu2.lon);
										window.___api_geodosu_com_global_object.func_ptr(point);
									}else{
										//全て検索失敗
										window.___api_geodosu_com_global_object.func_ptr(null);
									}
							}else{
								//元の住所で検索成功
								window.___api_geodosu_com_global_object.func_ptr(point);								
							}
						});
					}else{
						//前処理住所で検索成功
						window.___api_geodosu_com_global_object.func_ptr(point);
					}
				});				
			}else{
				baseobj.getLatLng_original(window.___api_geodosu_com_global_object.geodosu2.addr,function(point){
					if(!point){
						//元の住所で検索失敗
							if(window.___api_geodosu_com_global_object.geodosu2.geocoded == 1){
								//ジオどすの結果データを使う
								point = new GLatLng(window.___api_geodosu_com_global_object.geodosu2.lat, window.___api_geodosu_com_global_object.geodosu2.lon);
								window.___api_geodosu_com_global_object.func_ptr(point);
							}else{
								//全て検索失敗
								
							}
					}else{
						//元の住所で検索成功
						window.___api_geodosu_com_global_object.func_ptr(point);								
					}
				});
			}
		}
		_global.geodosutimer=setTimeout(function(){
			window.___api_geodosu_com_global_object.callbackfunc(null);
			window.___api_geodosu_com_global_object.callbackfunc=function(){}
		},_global.timeout);//Timeout for Geodosu.
		var s=document.getElementById('___api_geodosu_com_json_response');
		if(s!=null){
			s.parentNode.removeChild(s);//prevent a lot of script elements created
			s=null;
		}
		s = document.createElement("script");
		s.setAttribute("id", "___api_geodosu_com_json_response");
		s.setAttribute("type", "text/javascript");
		s.setAttribute("charset", "utf-8");
		s.setAttribute("src", url);
		document.body.appendChild(s);
	}

	baseobj.getLatLng=function(address, func_ptr){	//override getLatLng()
		var _global=window.___api_geodosu_com_global_object;
		_global.func_ptr = func_ptr;
		baseobj.getLatLng_geodosu(address);
	}
	return(baseobj);
}