Externalize nominatim autcomplete functionality

Add chosen language to nominatim request

js/common.js

@@ -36,11 +36,6 @@ function set_feedback(text, classname, keep_displayed)
 	}
 }
 
-function http_s(url)
-{
-	return document.location.protocol + '//' + url;
-}
-
 //keylisteners
 $.each(['customers', 'items', 'reports', 'receivings', 'sales', 'employees', 'config', 'giftcards'], function(key, value) {
 	$(window).jkey('f' + (key+1), function(){

js/nominatim.autocomplete.js

@@ -0,0 +1,115 @@
+(function($) {
+	
+	function http_s(url)
+	{
+		return document.location.protocol + '//' + url;
+	}
+	
+	if (window.sessionStorage && !sessionStorage['country'])
+	{
+		$.ajax({
+			type: "GET",
+			url: http_s('ipinfo.io/json'),
+			success: function(response) {
+				sessionStorage['country'] = response.country;
+			}, dataType: 'jsonp'
+		});
+	}
+	
+	var url = http_s('nominatim.openstreetmap.org/search');
+
+	var handle_auto_completion = function(fields) {
+		return function(event, results, formatted) {
+			if (results != null && results.length > 0) {
+				// handle auto completion
+				for(var i in fields) {
+					$("#" + fields[i]).val(results[i]);
+				}
+		        return false;
+			}
+			return true;
+		};
+	};
+
+	var set_field_values = function(results) {
+		return results[0] + ' - ' + results[1];
+	};
+
+	var create_parser = function(field_name, parse_format)
+	{
+		var parse_field = function(format, address) 
+		{
+			var fields = [];
+			$.each(format.split("|"), function(key, value)
+           	{
+                if (address[value] && fields.length < 2 && $.inArray(address[value], fields) === -1)
+                {
+	                fields.push(address[value]);
+                }
+       	    });
+       	    return fields[0] + (fields[1] ? ' (' + fields[1] + ')' : '');
+		};
+		
+		return function(data)
+		{
+            var parsed = [];
+            $.each(data, function(index, value)
+            {
+                var address = value.address;
+                var row = [];
+                $.each(parse_format, function(key, format)
+                {
+                    row.push(parse_field(format, address));
+                });
+                parsed[index] = {
+        	        data: row,
+    	            value: address[field_name],
+    	            result: address[field_name]
+                };
+            });
+            return parsed;
+		};
+	};
+
+	var request_params = function(id, key, language) 
+	{
+		return function() {
+			var result = {
+				 format: 'json',
+	             limit: 5,
+			     addressdetails: 1,
+			     country: window['sessionStorage'] ? sessionStorage['country'] : 'be',
+			     'accept-language' : language || navigator.language
+			};			
+			result[key || id] = $("#"+id).val();
+			return result;
+		}
+
+	};
+	
+	var nominatim = {
+			
+		init : function(options) {
+			
+			$.each(options.fields, function(key, value)
+			{
+				var handle_field_completion = handle_auto_completion(value.dependencies);
+				$("#" + key).autocomplete(url,{
+					max:100,
+					minChars:3,
+					delay:500,
+					formatItem: set_field_values,
+					type: 'GET',
+					dataType:'json',
+					extraParams: request_params(key, value.response && value.response.field, options.language),
+					parse: create_parser(key, (value.response && value.response.format) || value.dependencies)
+				});
+			    $("#" + key).result(handle_field_completion);
+			});
+		}
+	
+	};
+	
+	window['nominatim'] = nominatim;
+	
+})(jQuery);