Thread Navigating by Arrow keys

Use ← or → and Ctrl to navigate to previous, next, first or last page

2020-03-09 يوللانغان نەشرى. ئەڭ يېڭى نەشرىنى كۆرۈش.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name            Thread Navigating by Arrow keys
// @name:vi         Thread Navigating by Arrow keys
// @namespace       https://greasyfork.org/scripts/6849-thread-navigating-by-arrow-keys
// @description     Use ← or → and Ctrl to navigate to previous, next, first or last page
// @description:vi  Use ← or → and Ctrl to navigate to previous, next, first or last page
// @author          theheroofvn
// @include         /^.*(thread|forum|diendan).*$/
// @include         http://www.vn-zoom.com/*
// @require         https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js
// @noframes
// @grant           GM_addStyle
// @version         6.6
// ==/UserScript==

$(document).ready(function () {
    $(window).focus();

    function custom_site(list) {
        if (list.length === 0) return 0;
        for (var i = 0; i < list.length; i++) {
            if (location.hostname == list[i].host) {
                prev = list[i].prev;
                next = list[i].next;
                first = list[i].first;
                last = list[i].last;
                up = list[i].up;
                return 1;
            }
        }
        return 0;
    }

    function checkScriptExist(script) {
        return $('script[src*="' + script + '"]').length > 0 ? true : false;
    }

    function detect_forum() {
        if (window.location.hostname === 'forum.xda-developers.com') {
            return 'vbb';
        }

        var result = "";
        if (checkScriptExist("vbulletin")) result = "vbb";
        else if (checkScriptExist("xenforo")) result = "xenforo";
        else if (checkScriptExist("general.js")) result = "mybb";
        else if (checkScriptExist("forum_fn.js")) result = "phpbb";
        return result;
    }

    var prev, next, first, last, up, up_sub = '[itemtype="http://data-vocabulary.org/Breadcrumb"] a';
    var site_info = [
        {
            host: "next.voz.vn",
            prev: "a.pageNav-jump--prev",
            next: "a.pageNav-jump--next",
            first: ".pageNav-main>.pageNav-page:first-child>a",
            last: ".pageNav-main>.pageNav-page:last-child>a"
        }
        , {
            host: "www.webtretho.com",
            prev: "a.arrowPrePage",
            next: "a.arrowNextPage",
            first: "a.arrowFstPage",
            last: "a.arrowLstPage"
        }, {
            host: "forum.bkav.com.vn",
            prev: "a.js-pagenav-prev-button",
            next: "a.js-pagenav-next-button",
            first: "a[data-page='1']",
            last: "a.js-pagenav-button:nth-last-child(2)",
            up: "#breadcrumbs a.crumb-link"
        }
    ];

    if (custom_site(site_info) === 0) {
        switch (detect_forum()) {
            case 'vbb':
                prev = 'a[rel="prev"]';
                next = 'a[rel="next"]';
                first = 'a[rel="start"], a[rel="first"]';
                last = 'a[title^="Last"], a[title*="uối"]';
                up = "span.navbar a, li.navbit a";
                break;
            case 'xenforo':
                prev = ".PageNav a.text:first-child";
                next = ".PageNav a.text:last-child:not(.brjtpJumper)";
                last = ".PageNav nav > a:nth-last-child(2)";
                first = 'a[rel="start"]';
                up = "a.crumb";
                break;
            case 'mybb':
                prev = "a.pagination_previous";
                next = "a.pagination_next";
                first = "a.pagination_first";
                last = "a.pagination_last";
                up = ".navigation > a";
                break;
            case 'phpbb':
                prev = ".display-options a.left-box.left";
                next = ".display-options a.right-box.right";
                first = ".pagination > span > a:first-child";
                last = ".pagination > span > a:last-child";
                up = ".navlinks > .icon-home a";
                break;
            default:
                return;
        }
    }

    var nav = {
        prev: function () {
            return $(prev);
        },

        next: function () {
            return $(next);
        },

        first: function () {
            if ($(first).length > 0) {
                return $(first);
            } else {
                var $prev = $(prev).first();

                if ($prev) {
                    $prev.attr('href', function (_, value) {
                        return value.replace(/page=\d+/, 'page=1');
                    });

                    return $prev;
                } else {
                    return $();
                }
            }
        },

        last: function () {
            if ($(last).length > 0) {
                return $(last);
            } else {
                var $next = $(next).first();

                if ($next) {
                    $next.attr('href', function (_, value) {
                        return value.replace(/page=\d+/, 'page=9999');
                    });

                    return $next;
                } else {
                    return $();
                }
            }
        },

        up: function () {
            return $(up).length > 0 ? $(up).last() : $(up_sub).last();
        }
    };

    var allowed = true;

    $(document).keydown(function (e) {
        if (!allowed) {
            return;
        }

        allowed = false;

        var key = e.keyCode,
            action = null;

        if (e.ctrlKey) {
            allowed = true;
            if (key == 39) action = "last";
            else if (key == 37) action = "first";
            else if (key == 8) action = "up";
        } else if (key == 39) {
            action = "next";
        } else if (key == 37) {
            action = "prev";
        } else {
            return;
        }

        if (!action || e.target.tagName == "INPUT" || e.target.tagName == "TEXTAREA") {
            return;
        }

        var $anchor = nav[action]();

        if ($anchor.length) {
            window.location.href = $anchor[0].href;
        }
    }).keyup(function (e) {
        allowed = true;
    });
});