// ==UserScript==
// @name         NGA Re-collapse Button
// @namespace    https://greasyfork.org/zh-CN/scripts/28612-nga-re-collapse-button
// @version      1.1.1.20180215
// @icon         http://bbs.nga.cn/favicon.ico
// @description  NGA 折叠内容展开后可再次收起
// @author       AgLandy
// @include      /^https?://(bbs\.ngacn\.cc|nga\.178\.com|bbs\.nga\.cn)/.+/
// @grant        none
// @downloadURL none
// ==/UserScript==

//发布地址：http://bbs.ngacn.cc/read.php?tid=11313839

if(typeof jQuery == 'undefined'){
    let s = document.createElement('script');
    s.type = 'text/javascript';
    s.src = 'https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js';
    s.onload = s.onreadystatechange = function(){
        if(!this.readyState || 'loaded' === this.readyState || 'complete' === this.readyState){
            main(jQuery.noConflict());
            this.onload = this.onreadystatechange = null;
        }
    };
    document.head.appendChild(s);
}
else
    main(jQuery);

function main($Q){

    if(!window.commonui)
        commonui = {};

    let r = commonui.reCollapseButton = {};

    r.f = function(e, c, n){
        if(r.timer != undefined){
            clearTimeout(r.timer);
            delete r.timer;
        }
        let b = e.target, dB = $Q(b).parent(), dC = dB.next();
        if(dC.html() == ''){
            $Q(b).html('-');
            dC.css({'overflow-y':'hidden','transition':'all 0.5s ease-in-out','-o-transition':'all 0.5s ease-in-out','-moz-transition':'all 0.5s ease-in-out','-webkit-transition':'all 0.5s ease-in-out','-ms-transition':'all 0.5s ease-in-out','max-height':'0px','opacity':'0'});
            dB.css('background', __COLOR.border2);
            ubbcode.collapse.load(dC[0], c, n);
            setTimeout(function(){
                $Q('<div />').append(dC.contents()).appendTo(dC);
                dC.css({'max-height':(dC.children().outerHeight(true) + 'px'),'opacity':'1'});
                r.timer = setTimeout(function(){
                    dC.css({'max-height':'none'});
                    delete r.timer;
                }, 500);
            }, 100);
            return;
        }
        if($Q(b).html() == '+'){
            $Q(b).html('-');
            dB.css('background', __COLOR.border2);
            dC.children().css('display', '');
            dC.css({'max-height':(dC.children().outerHeight(true) + 'px'),'opacity':'1'});
            r.timer = setTimeout(function(){
                dC.css({'max-height':'none'});
                delete r.timer;
            }, 500);
        }
        else{
            $Q(b).html('+');
            dB.css('background', '');
            dC.css('max-height', (dC.children().outerHeight(true) + 'px'));
            setTimeout(function(){
                dC.css({'max-height':'0px','opacity':'0'});
            }, 10);
            r.timer = setTimeout(function(){
                dC.children().css('display', 'none');
                delete r.timer;
            }, 510);
        }
    };

    let c = $Q('.collapse_btn');
    for(i = 0; c.length > i; i++){
        $Q(c[i]).children('button').attr('onclick', $Q(c[i]).children('button').attr('onclick').replace(/^t.+,"/, 'commonui.reCollapseButton.f(event,"'));
        $Q(c[i]).children('button').css({width:'1.2em', height:'1.2em', padding:'0', outline:'none', 'font-family':'Serif', 'line-height':'1.1em'});
    }

}