// ==UserScript==
// @name        微博图片全显示
// @namespace   hzhbest
// @include     http://weibo.com/*
// @include     http://www.weibo.com/*
// @description    同屏显示多图微博的全部大图。
// @version     1.6
// @grant       none
// @downloadURL none
// ==/UserScript==

(function() {

var topheight = 10;

	// http://weibo.com/2710065263/BmxiVDCgt?from=page_1005052710065263_profile&wvr=6&mod=weibotime&type=comment#_rnd1436436058420
	// http://weibo.com/2328516855/CnYCvixUq?type=comment#_rnd1436493435761
var regex = /weibo\.com\/\d{10}\/[a-z0-9A-Z]{9}\??/;

// window.addEventListener('load', function(){if (regex.test(document.location.href)) {setTimeout(init, 3000);}}, false);
if (regex.test(document.location.href)) init(); //console.log(regex.test(document.location.href));

function init(){  //console.log("init");
	var list_ul = getElementsByClass("list_ul", 'div')[0]; //alert(!list_ul + "1");
	var expbox = getElementsByClass("WB_expand_media_box", 'div')[0]; //alert(!expbox + "2");
	if (!list_ul && !expbox){
		setTimeout(init, 2000); //console.log("wait2a");
		return;
	} else if (!!list_ul){
		if (!expbox) {  //console.log("exit");
			return;
		} else if (!list_ul.getElementsByTagName('div')[0] && !getElementsByClass("tips_rederror", 'div')[0]){
			setTimeout(init, 1000); //console.log("wait2b");
			return;
		} else if (document.documentElement.scrollTop < (topheight+70)){
			setTimeout(init, 300); //console.log("wait2c");
			return;
		} else { //console.log(document.documentElement.scrollTop);
			go();
		}
	}
}

function go(){
	var wrpbox = getElementsByClass("WB_media_wrap", 'div')[0];
	var expbox = getElementsByClass("WB_expand_media_box", 'div')[0];
	var feedbox = getElementsByClass("WB_feed_handle", 'div')[0];
	var box = wrpbox.parentNode;
	var imgthumbs = wrpbox.getElementsByTagName('img');
	var imgsrc = [], imgs = [], imgl = imgthumbs.length;
	var _limited = false;

	// Insert CSS
	var headID = document.getElementsByTagName("head")[0];         
	var cssNode = creaElemIn('style', headID);
	cssNode.type = 'text/css';
	cssNode.innerHTML = '.big_pic{max-width: 890px;} .big_pic_n{max-width: 560px;} .WB_frame_c {width: auto !important; max-width: 920px; min-width: 600px;} .WB_text.W_f14, .WB_text{width: 520px;} .media_box{display: none !important;} .big_pic_sc,.big_pic_nc{position: fixed; left:10px; padding: 3px; border: 1px solid white; color: white; background: rgba(133,133,133,0.6); cursor: pointer;} .big_pic_sc{top: 40%;} .big_pic_nc{top: 45%;}';
	
	var sclink = creaElemIn('div', document.body);
	sclink.className = "big_pic_sc";
	sclink.innerHTML = "直达评论";
	sclink.addEventListener("click", function(){
		document.documentElement.scrollTop = getTop(feedbox);
	}, false);
	
	var nclink = creaElemIn('div', document.body);
	nclink.className = "big_pic_nc";
	nclink.innerHTML = "图片限宽";
	nclink.addEventListener("click", function(){
		if (_limited) {
			for (var i = 0; i < imgl; i++) {imgs[i].className = "big_pic";}
			_limited = false;
		} else {
			for (var i = 0; i < imgl; i++) {imgs[i].className = "big_pic_n";}
			_limited = true;
		}
	}, false);
	
	for (var i = 0; i < imgl; i++) {
		if (/\/square\//.test(imgthumbs[i].src)) {		// http://ww1.sinaimg.cn/square/c0788b86gw1etxemfiltjj20go0gowf8.jpg
			imgsrc[i] = imgthumbs[i].src.replace("/square/", "/large/");
		} else if (/\/thumbnail\//.test(imgthumbs[i].src)) {	// http://ww3.sinaimg.cn/thumbnail/bfc243a3gw1etx3ffxyhvg206y03ukjm.gif
			imgsrc[i] = imgthumbs[i].src.replace("/thumbnail/", "/large/");
		} else {
			continue;
		}
		imgs[i] = creaElemIn('img', box);
		creaElemIn('br', box);
		imgs[i].src = imgsrc[i];
		imgs[i].className = "big_pic";
	}
	// console.log(!!wrpbox + "1 " + !!expbox + "2");
	if (!!wrpbox) box.removeChild(wrpbox);
	if (!!expbox) expbox.parentNode.removeChild(expbox);
	document.documentElement.scrollTop = topheight;
}

// Create an element
function creaElemIn(tagname, destin) {
	var theElem = destin.appendChild(document.createElement(tagname));
	return theElem;
}

function getElementsByClass(cName ,tagName){
	var elements = tagName ? document.getElementsByTagName(tagName) : document.getElementsByTagName('*');
	var findEles = [];
	var reg = new RegExp('^'+cName+'\\s*|\\s+'+cName+'\\s+|\\s+'+cName+'$');
	for(var i=0;i<elements.length;i++) {
		if(reg.test(elements[i].className))findEles.push(elements[i]);          
	}
	return findEles;
}

function getTop(e){
var offset=e.offsetTop;
if(e.offsetParent!=null) offset+=getTop(e.offsetParent);
return offset;
} 

})();