viewsource

View and beauty website source code. Support to see the source code by holding the right mouse and drag. Shortcut: Alt+U.
当前为 2016-05-21 提交的版本，查看最新版本。
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// ==UserScript==
// @id           [email protected]
// @name         viewsource
// @namespace    devs.forumvi.com
// @description  View and beauty website source code. Support to see the source code by holding the right mouse and drag. Shortcut: Alt+U.
// @version      2.3.7
// @icon         http://i.imgur.com/6yZMOeH.png
// @author       Zzbaivong
// @license      MIT
// @match        http://*/*
// @match        https://*/*
// @resource     light https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.4.0/styles/github-gist.min.css
// @resource     dark https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.4.0/styles/monokai-sublime.min.css
// @require      https://greasyfork.org/scripts/18530-beautify-html/code/beautify-html.js?version=126855
// @require      https://greasyfork.org/scripts/18531-beautify-js/code/beautify-js.js?version=126854
// @require      https://greasyfork.org/scripts/18528-beautify-css/code/beautify-css.js?version=126856
// @require      https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.4.0/highlight.min.js
// @noframes
// @connect      self
// @supportURL   https://github.com/baivong/Userscript/issues
// @run-at       document-idle
// @grant        GM_addStyle
// @grant        GM_getResourceText
// @grant        GM_xmlhttpRequest
// @grant        GM_registerMenuCommand
// ==/UserScript==

(function () {

    'use strict';

    var theme = 'light', // light|dark

        win = window,
        urlpage = location.href,
        doc = document,
        wrapcontent = doc.documentElement,
        content = doc.body;

    function scrollByDragging(container, disableH, disableV) {

        function mouseUp(e) {
            if (e.which !== 3) return;

            window.removeEventListener('mousemove', mouseMove, true);
            container.style.cursor = 'default';
        }

        function mouseDown(e) {
            if (e.which !== 3) return;

            pos = {
                x: e.clientX,
                y: e.clientY
            };

            window.addEventListener('mousemove', mouseMove, true);
            container.style.cursor = 'move';
        }

        function mouseMove(e) {
            if (!disableH) container.scrollLeft -= (-pos.x + (pos.x = e.clientX));
            if (!disableV) container.scrollTop -= (-pos.y + (pos.y = e.clientY));
        }

        var pos = {
            x: 0,
            y: 0
        };

        container.oncontextmenu = function (e) {
            e.preventDefault();
        };

        container.addEventListener('mousedown', mouseDown, false);
        window.addEventListener('mouseup', mouseUp, false);

    }

    function removeEvents(ele, attr) {
        var events = 'onafterprint onbeforeprint onbeforeunload onerror onhashchange onload onmessage onoffline ononline onpagehide onpageshow onpopstate onresize  onstorage onunload onblur onchange oncontextmenu onfocus oninput oninvalid onreset onsearch onselect onsubmit onkeydown onkeypress onkeyup onclick ondblclick ondrag ondragend ondragenter ondragleave ondragover ondragstart ondrop onmousedown onmousemove onmouseout onmouseover onmouseup onmousewheel onscroll onwheel oncopy oncut onpaste onerror onshow ontoggle'.split(' '),
            x;
        for (x in events) {
            var _event = events[x];
            ele[_event] = null;
            if (attr) {
                ele.removeAttribute(_event);
            }
        }
    }

    function viewsource() {
        GM_xmlhttpRequest({
            method: 'GET',
            url: urlpage,
            onload: function (response) {

                removeEvents(win);
                removeEvents(doc);
                removeEvents(wrapcontent, true);
                removeEvents(content, true);

                var txt = html_beautify(response.response);

                doc.head.innerHTML = '';
                content.innerHTML = '';
                content.removeAttribute('id');
                content.removeAttribute('class');
                content.removeAttribute('style');
                doc.title = 'view-source:' + urlpage;

                GM_addStyle(GM_getResourceText(theme) + 'html,body,pre{margin:0;padding:0}.hljs{word-wrap:normal!important;white-space:pre!important;padding-left:4em;line-height:100%}.hljs::before{content:attr(data-lines);position:absolute;color:#d2d2d2;text-align:right;width:3.5em;left:-.5em;border-right:1px solid rgba(221, 221, 221, 0.36);padding-right:.5em}');

                var output = doc.createElement('PRE');
                output.setAttribute('class', 'xml');
                output.textContent = txt;

                content.appendChild(output);

                hljs.highlightBlock(output);

                var lines = txt.split('\n'),
                    l = '';
                lines = lines ? lines.length : 0;
                for (var i = 0; i < lines; i++) {
                    l += (i + 1) + '\n';
                }

                output.setAttribute('data-lines', l);
                output.style.width = output.scrollWidth + 'px';

                scrollByDragging(content);
                scrollByDragging(wrapcontent);

                var attrUrl = doc.getElementsByClassName('hljs-attr');
                for (var j = 0; j < attrUrl.length; j++) {
                    if (/\b(src|href\b)/.test(attrUrl[j].textContent)) {
                        var link = attrUrl[j].nextSibling.nextSibling;
                        var url = link.textContent.slice(1, -1);
                        link.innerHTML = '<a href="' + url + '" target="_blank">' + url + '</a>';
                    }
                }

            }
        });
    }

    GM_registerMenuCommand('View source', viewsource, 'u');

    if (/^application\/(xhtml+xml|xml|rss+xml)|text\/(html|xml)$/.test(doc.contentType)) {
        doc.onkeydown = function (e) {

            // Alt+U
            if (e.which === 85 && e.altKey) {
                e.preventDefault();

                viewsource();
            }
        };
    }

}());