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「ONE·一个」网站增强

为「ONE·一个」网站增加方便的功能

当前为 2014-09-06 提交的版本，查看 最新版本。

// ==UserScript==
// @name        「ONE·一个」网站增强
// @namespace   https://github.com/jiajunw/one-enhanced
// @description 为「ONE·一个」网站增加方便的功能
// @include     http://wufazhuce.com/one/vol*
// @version     1.0.0
// @grant       GM_getResourceText
// @grant       GM_addStyle
// ==/UserScript==

var custom_css = "\
  #enhanced-navbar > a {\
    position: fixed;\
    display: block;\
    background-color: #01AEF0;\
    width: 64px;\
    height: 64px;\
    line-height: 64px;\
    text-align: center;\
  }\
\
  #enhanced-newer {\
    top: 50%;\
    left: 0;\
    margin-top: -32px;\
    border-top-right-radius: 42px;\
    border-bottom-right-radius: 42px;\
  }\
\
  #enhanced-older {\
    top: 50%;\
    right: 0;\
    margin-top: -32px;\
    border-top-left-radius: 42px;\
    border-bottom-left-radius: 42px;\
  }\
\
  #enhanced-navbar span {\
    color: white;\
    line-height: inherit;\
    font-size: 40px;\
    top: 2px;\
  }\
";
GM_addStyle(custom_css);

function get_today_no() {
    var the_day_before_first = new Date(2012, 10 - 1, 7);
    var today = new Date();

    var diff = new Date(today - the_day_before_first);
    var days = diff / 1000 / 60 / 60 / 24;
    return Math.floor(days);
}

function get_cur_no() {
    var url_path = document.location.pathname;
    var re = /^\/one\/vol\.(\d+)/g;
    var matches = re.exec(url_path);
    if (matches && matches.length > 1) {
        return parseInt(matches[1]);
    }
}

function dom(tag, attr, inner) {
    var tag = document.createElement(tag);
    for (var key in attr) {
        if (attr.hasOwnProperty(key)) {
            tag.setAttribute(key,attr[key]);
        }
    }
    if (inner) {
        tag.innerHTML = inner;
    }
    return tag;
}

function add_nav() {
    var newest = get_today_no(),
        oldest = 1,
        cur = get_cur_no();

    var new_nav = dom('nav', { id : 'enhanced-navbar' });
    document.body.appendChild(new_nav);

    var url = '/one/vol.'
    if (cur !== newest) {
        var url_next = url + (cur + 1);
        var new_nav_newer = dom(
            'a',
            { id : 'enhanced-newer', href : url_next },
            '<span class="glyphicon glyphicon-circle-arrow-left"></span>'
        );
        new_nav.appendChild(new_nav_newer);
    }

    if (cur !== oldest) {
        var url_prev = url + (cur - 1);
        var new_nav_older = dom(
            'a',
            { id : 'enhanced-older', href : url_prev },
            '<span class="glyphicon glyphicon-circle-arrow-right"></span>'
        );
        new_nav.appendChild(new_nav_older);
    }
}

add_nav();