thank you Bravado for your reply
i renamed all of language files to "persian" word , example persian.inc.php , pe.js ; and i set them in plugin.tinymce.tpl file , now i have all of persian languages and i saved them in language folders.
i changed Language setting in manager>Tools>Site tab>Language to Persian and i changed Language setting in manager>Tools>Interface & Features>Front-end Editor Language to persian too.
but editor language didn’t change
i think this problem is in site’s cache
because i looked siteCache.idx.php file and my changes in plugin.tinymce.tpl didn’t apply in cache file , so i cleared cache , but those contents didn’t change
then i edited siteCache.idx.php file and i put
$returnlang = "pe";
in getTinyMCELang function and i changed
theme_advanced_toolbar_align : "left",
to right value , the toolbar aligned to right
, but language is not persian yet