Enhance caching, fix bug.

Author: LordFokas

README.md

@@ -42,7 +42,7 @@ Custom functions must abide by the `func( element, str )` signature, where `elem
 # SiLo - Library Summary
 ## SiLo.language
 + **SiLo.language.load( dictionary, makeFallback )** - Sets the `dictionary` object as the current dictionary. If `makeFallback` is true this dictionary will also be set as the fallback dictionary for when a key can't be found in the current one (for example, to write in english if a sentence is unavailable in the current language).
-+ **SiLo.language.cache( code, loader, makeFallback )** - Sets the current dictionary from cache. If there is no `code` entry in the cache, `loader` (a callback you must provide) will be asked to load it; the `loader` must follow the `loader( code, callback )` signature, where `code` is the same language/country code entry missing from cache and `callback( dictionary )` must be called once you successfuly load the dictionary file -- not calling it simply results in the operation being aborted. `makeFallback` works in the same way as in the simpler **load** function.
++ **SiLo.language.cache( code, loader, relocalize, makeFallback )** - Sets the current dictionary from cache. If there is no `code` entry in the cache, `loader` (a callback you must provide) will be asked to load it; the `loader` must follow the `loader( code, callback )` signature, where `code` is the same language/country code entry missing from cache and `callback( dictionary )` must be called once you successfuly load the dictionary file -- not calling it simply results in the operation being aborted. When the language finishes loading, `relocalize` will be called: this is a callback you provide so that you can relocalize the document once the language switching is done successfully. `makeFallback` works in the same way as in the simpler **load** function.
 
 ## SiLo.localize
 + **SiLo.localize.all( )** - Localizes the entire document. The same as calling `Silo.localize.recursive(document.body)`.

silo.js

@@ -1,5 +1,5 @@
 var SiLo = (function(){
-	var language = null, fallback = null, cache = null, functions = null, warn_fallback = null, warn_no_key = null, warn_no_func = null;
+	var language = null, fallback = null, cache = {}, functions = null, warn_fallback = null, warn_no_key = null, warn_no_func = null;
 
 	function replace_all(s, t, r){ return s.split(t).join(r); }
 	function tree_find(keys, def, idx, obj){ ret = obj[keys[idx++]]; return ret ? (idx == keys.length ? ret : tree_find(keys, def, idx, ret)) : def; }
@@ -51,11 +51,12 @@ var SiLo = (function(){
 	function localize_class(className){ localize(document.getElementsByClassName(className)); }
 
 	function language_load(dictionary, makeFallback){ language = dictionary; if(makeFallback) fallback = dictionary; }
-	function language_cache(code, loader, makeFallback){
+	function language_cache(code, loader, relocalize, makeFallback){
 		var callback = function(dict){
 			if(!cache[code]) cache[code] = dict;
 			language = cache[code];
 			if(makeFallback) fallback = cache[code];
+			relocalize();
 		}
 		if(!cache[code]) loader(code, callback);
 		else callback();