/***
|''Name:''|LanguageSelectorPlugin|
|''Version:''|0.5|
|''Author:''|FND|
|''License:''|[[Creative Commons Attribution-ShareAlike 2.5 License|http://creativecommons.org/licenses/by-sa/2.5/]]|
|''~CoreVersion:''|2.1.3|

!Usage
* define CSS classes for each language by putting the following in the [[StyleSheet]] tiddler: {{{.lang_}}}//{{{[language code]}}}//{{{ { display: none; } }}}
* add {{{<<lang_}}}//{{{[language code]}}}//{{{>>}}} to create a button for the desired language

!ToDo
* dynamic language support (i.e. not having to manually define CSS classes and macros/buttons

!Code
***/
/*{{{*/
/*
macros
*/

config.macros.lang_en={label: "EN", prompt: "English"}
config.macros.lang_de={label: "DE", prompt: "Deutsch"}

/*
buttons
*/

config.macros.lang_en.handler = function(place) {
	createTiddlyButton(place,this.label,this.prompt,function ()
	{langSelect("en"); return false;},null,null,this.accessKey);
}
config.macros.lang_de.handler = function(place) {
	createTiddlyButton(place,this.label,this.prompt,function ()
	{langSelect("de"); return false;},null,null,this.accessKey);
}

/*
functions
*/

// select language
langSelect = function(lang) {
	getStyleClass("lang_" + lang).style.display = "block";
}

// getStyleClass by Nick Z., Martin Honnen (http://www.faqts.com/knowledge_base/view.phtml/aid/2147)
function getStyleClass (className) {
	for (var s = 0; s < document.styleSheets.length; s++)
	{
		if(document.styleSheets[s].rules)
		{
			for (var r = 0; r < document.styleSheets[s].rules.length; r++)
			{
				if (document.styleSheets[s].rules[r].selectorText == '.' + className)
				{
					return document.styleSheets[s].rules[r];
				}
			}
		}
		else if(document.styleSheets[s].cssRules)
		{
			for (var r = 0; r < document.styleSheets[s].cssRules.length; r++)
			{
				if (document.styleSheets[s].cssRules[r].selectorText == '.' + className)
					return document.styleSheets[s].cssRules[r];
			}
		}
	}
	
	return null;
}
/*}}}*/