Mouseless Link Opener

Open links and click buttons easily using only the keyboard!

Dovrai installare un'estensione come Tampermonkey, Greasemonkey o Violentmonkey per installare questo script.

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

Dovrai installare un'estensione come Tampermonkey o Violentmonkey per installare questo script.

Dovrai installare un'estensione come Tampermonkey o Userscripts per installare questo script.

Dovrai installare un'estensione come ad esempio Tampermonkey per installare questo script.

Dovrai installare un gestore di script utente per installare questo script.

(Ho già un gestore di script utente, lasciamelo installare!)

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

(Ho già un gestore di stile utente, lasciamelo installare!)

// ==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()

})();