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Wadsworth Constant

Script adds a posibility to apply Wadsworth Constant to YouTube videos. Two buttons are added, one to apply and to auto-switch.

当前为 2015-03-23 提交的版本，查看 最新版本。

// ==UserScript==
// @name        Wadsworth Constant
// @description     Script adds a posibility to apply Wadsworth Constant to YouTube videos. Two buttons are added, one to apply and to auto-switch.
// @namespace   Wadsworth Constant
// @include http*://*.youtube.com/*
// @include http*://www.youtube.com/*
// @include http*://youtube.com/*
// @grant       GM_getValue
// @grant       GM_setValue
// @grant       GM_xmlhttpRequest
// @noframes
// @run-at document-end
// @require https://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js
// @author      Dexmaster
// @co-author   Jake Lauer
// @version     1.1.4
// ==/UserScript==
(function () {
    'use strict';
    var c_loc = window.location.search, loaded = false;

    function ww_apply(apply) {
        var url; //,saveURL
        if (!!apply) {
            url = window.location.href;
            if (url.match('#') || url.match('&t')) {
                url = url.split('#') [0].split('&t') [0];
            }
            url = url.split('?') [1].split('&') [0].split('=') [1];
            url = 'https://gdata.youtube.com/feeds/api/videos/' + url;
            //console.log(url);
            if (url === 'https://gdata.youtube.com/feeds/api/videos/') {
                //console.log('Something went wrong... dunno what it was. Sorry!');
            }
            window.location.hash = '#';
            //console.log(saveURL);
            GM_xmlhttpRequest({
                method: 'GET',
                // ignoreCache: true,
                redirectionLimit: 0,
                url: url,
                onerror: function (res) {
                    var msg = 'An error occurred.' + '\nresponseText: ' + res.responseText + '\nreadyState: ' + res.readyState + '\nresponseHeaders: ' + res.responseHeaders + '\nstatus: ' + res.status + '\nstatusText: ' + res.statusText + '\nfinalUrl: ' + res.finalUrl;
                    //console.log(msg);
                },
                onload: function (xhr) {

                    if (xhr.readyState === 4) {
                        if (xhr.status === 200 && xhr.responseText && xhr.responseText.length > 20) {
                            var results = xhr.responseText,
                                duration = parseInt(results.split('duration seconds=\'') [1].split('\'') [0]),
                                newTime = Math.ceil(duration * 0.3),
                                hrr = window.location.href,
                                mrr = '';
                            //console.log(xhr);
                            if (hrr.match('&t=')) {
                                hrr = hrr.split('&t=') [0];
                                if (hrr.split('&t=').length > 1) {
                                    mrr = hrr.split('&t=') [1];
                                    hrr += (mrr.match('&')) ? '&' + mrr.split('&') [1] : '';
                                }
                            }
                            if (hrr.match('#')) {
                                window.location = (hrr.split('#') [0] + '#t=' + newTime + 's');
                            } else {
                                window.location = (hrr + '#t=' + newTime + 's');
                            }
                        }
                    }
                }
            });
        }
    }

    function pp_state(event) {
        var t_loc = window.location, yt_wadsworth = GM_getValue('yt_wadsworth', false);
        if (c_loc !== t_loc.search || !loaded) {
            if(!loaded)loaded = true;
            if (yt_wadsworth) {
                ww_apply(true);
                // history changed because of pushState/replaceState
            }
        }
    }

    function ww_switch() {
        var yt_wadsworth = GM_getValue('yt_wadsworth', false);
        GM_setValue('yt_wadsworth', !yt_wadsworth);
        jQuery('#switch_wadsworth').text('Switch ' + (!yt_wadsworth ? 'On' : 'Off'));
        ww_apply(!yt_wadsworth);
    }

    function load_once() {
        if(loaded) return;
        var yt_wadsworth = GM_getValue('yt_wadsworth', false);
        jQuery('#content').before('<div id="block_wadsworth" style="position: relative; z-index: 1; height: 0px;" class="content-alignment watch-small">Wadsworth Constant: <div id="apply_wadsworth" style="display: inline-block; border: 1px solid red; cursor: pointer; background: none repeat scroll 0% 0% rgb(204, 204, 204); color: black; z-index: 12; padding: 4px 6px; position: relative; margin-top: 3px;">Apply</div><div id="switch_wadsworth" style="display: inline-block; border: 1px solid red; cursor: pointer; background: none repeat scroll 0% 0% rgb(204, 204, 204); color: black; z-index: 12; padding: 4px 6px; position: relative; margin-left: 6px; margin-top: 3px;">Switch ' + (yt_wadsworth ? 'On' : 'Off') + '</div></div>');
        if (!window.location.href.match('v=') && !window.location.href.match('#p')) {
            jQuery('#block_wadsworth').remove();
        }
        pp_state();
        jQuery('#switch_wadsworth').live('click', ww_switch);
        jQuery('#apply_wadsworth').live('click', function () {
            ww_apply(true);
        });
    }

    document.addEventListener('DOMContentLoaded', load_once);
    window.addEventListener('spfdone', pp_state);
    //window.addEventListener('popstate', pp_state);
}) ();