MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
$('li#pt-anon_oauth_login a').click(function(){
        articlePath = mw.config.get('wgArticlePath');
        url = articlePath.replace('$1', 'Special:OAuth2Client/redirect?returnto=Special:OAuth2Client/close');
        var left = (screen.width/2) - 200;
        var above = (screen.height/2) - 200;
        newwindow = window.open(url, "_blank", "resizable=yes, scrollbars=yes, titlebar=yes, width=400, height=400, top="+above+", left="+left);
        return false;
})

if (mw.config.get('wgTitle') == 'OAuth2Client/close') {
        window.opener.location.reload();
        window.close();
}