Mouseless Link Opener

Open links and click buttons easily using only the keyboard!

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Mouseless Link Opener
// @description  Open links and click buttons easily using only the keyboard!
// @version      0.4.0
// @author       sllypper
// @homepage     https://greasyfork.org/en/users/55535-sllypper
// @namespace    sllypper
// @match        *://*/*
// @grant        GM_openInTab
// ==/UserScript==

(function() {
    'use strict';

    // for American keyboard layout, switch it to "`" instead
    // so you can use it with one hand
    // or whatever other key you want
    const HOTKEY = "'"

    const also_other_elements = true

    // Label Colors
    const textColor = "#fff"
    const backgroundColor = "#555"

    //

    let elBag = [];
    let isSet = false;
    let visibleLinks = [];
    //let page;

    function setListeners() {
        document.addEventListener("keydown", event => {
            if (!isSet) {
                if (event.key === HOTKEY && event.ctrlKey) {
                    event.preventDefault()
                    getElements()
                    filterElements()
                    pickTooltips()
                    placeTooltips()
                    isSet = true
                }
            } else {
                if (event.key >= 0 && event.key < 10) {
                    event.preventDefault()
                    if (chooseTooltip(parseInt(event.key), event.ctrlKey)) {
                        clearTooltips()
                        isSet = false
                    }
                } else if (event.key === "Tab") {
                    event.preventDefault()
                    shiftTooltips()
                } else if (event.ctrlKey) {
                    event.preventDefault()
                } else {
                    clearTooltips()
                    isSet = false
                }
            }
        })
    }

    function chooseTooltip(num, ctrl) {
        if (num > visibleLinks.length || (num === 0 && visibleLinks.length < 10)) return false
        if (num === 0) {
            if (!ctrl) visibleLinks[9].click()
            else clickNewTab(visibleLinks[9])
            return true
        }
        // console.log(visibleLinks[num-1])
        // console.log(ctrl)
        if (!ctrl) visibleLinks[num-1].click()
        else clickNewTab(visibleLinks[num-1])
        return true
    }

    function clickNewTab(el) {
        GM_openInTab(el.href, {'insert': true, 'setParent': true})
        // GM_openInTab(el.href, {'active': true, 'insert': true, 'setParent': true})
    }

    function shiftTooltips() {
        visibleLinks = []
        clearTooltips()
        if (elBag.length > 0) {
            pickTooltips()
            placeTooltips()
        } else {
            getElements()
            filterElements()
            pickTooltips()
            placeTooltips()
        }
    }

    function clearAction() {
        // let el
        for (let el of document.querySelectorAll('.displayText_container')) { el.remove() }
        for (let el of document.querySelectorAll('.displayText')) { el.remove() }
        visibleLinks = []
        isSet = false
    }

    function clearTooltips() {
        for (let el of document.querySelectorAll('.displayText_container')) { el.remove() }
        for (let el of document.querySelectorAll('.displayText')) { el.remove() }
        visibleLinks = []
    }

    function pickTooltips() {
        // gets up to 10 tooltips from elBag into visibleLink
        visibleLinks = []
        let i,
            len = elBag.length

        for (i=0; i <= 9 && i < len; i++) {
            visibleLinks.push(elBag.shift())
        }
    }

    function placeTooltips() {
        //console.log('placing '+visibleLinks.length+' tooltips', visibleLinks, elBag)
        for (let i = 0; i <= 8 && i < visibleLinks.length; i++) {
            createTooltip(visibleLinks[i], i+1)
        }
        if (visibleLinks.length === 10) {
            createTooltip(visibleLinks[9], 0)
        }
    }

    function getElements() {
        if (also_other_elements) {
            elBag = Array.from(document.querySelectorAll('div,a,button'))
            return
        }

        elBag = Array.from(document.querySelectorAll('a,button'))
    }

    function filterElements() {
        elBag = elBag.filter(
            (el) => isInViewport(el) && !(el.offsetWidth === 0 || el.offsetHeight === 0) && !(el.nodeName === "A" && el.getAttribute('href') == null)
        )

        if (also_other_elements) elBag = elBag.filter((el) => el.tagName == "A" || el.tagName == "BUTTON" || window.getComputedStyle(el).cursor == "pointer" || el.type == "checkbox" || el.type == "radio")

        elBag = elBag.filter(isVisible)
    }

    function createTooltip(el, num) {
        let oldDisplay = el.style.display
        el.style.display = "inline-block"
        const rect = getCoords(el);
        el.style.display = oldDisplay

        const tooltip = document.createElement("div")
        tooltip.setAttribute("class", "displayText")
        tooltip.innerText = num

        tooltip.style.left = rect.right + 'px'
        tooltip.style.top = rect.top + 'px'

        document.body.appendChild(tooltip)

        return tooltip
    }

    function addCustomCSS() {
        let customStyles = document.createElement("style");
        customStyles.setAttribute("type", "text/css");

        let styles = ".displayText { position: absolute; top: 0; right: -16px; margin: 0; overflow: visible !important; width: min-content; background-color: " + backgroundColor + "; color: " + textColor + "; text-align: center; border-radius: 2px; padding: 0px 2px; line-height: 20px; font-size: 14px; z-index: 9999; }"

        customStyles.innerHTML = styles;

        document.getElementsByTagName("head")[0].appendChild(customStyles);
    }

    /*!
     * Determine if an element is in the viewport
     * (c) 2017 Chris Ferdinandi, MIT License, https://gomakethings.com
     * @param  {Node}    elem The element
     * @return {Boolean}      Returns true if element is in the viewport
     */
    var isInViewport = function (elem) {
        var distance = elem.getBoundingClientRect();
        return (
            distance.top >= 0 &&
            distance.left >= 0 &&
            distance.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
            distance.right <= (window.innerWidth || document.documentElement.clientWidth)
        );
    }

    var isVisible = function (elem) {
        const elemCenter = {
            x: elem.getBoundingClientRect().left + elem.offsetWidth / 2,
            y: elem.getBoundingClientRect().top + elem.offsetHeight / 2
        };
        let pointContainer = document.elementFromPoint(elemCenter.x, elemCenter.y);
        do {
            if (pointContainer === elem) return true;
        } while (pointContainer = pointContainer.parentNode);
        return false;
    }

    function getCoords(elem) {
        let box = elem.getBoundingClientRect();

        return {
            top: box.top + window.pageYOffset,
            right: box.right + window.pageXOffset,
            bottom: box.bottom + window.pageYOffset,
            left: box.left + window.pageXOffset
        };
    }

    addCustomCSS()
    setListeners()

})();