GAB User Autocomplete

User Autocomplete requirement 2 of 2: show a pop-up of users that match the @mention found at the end of the text entry

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 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         GAB User Autocomplete
// @namespace    https://gab.ai/Jeremy20_9
// @version      0.1
// @description  User Autocomplete requirement 2 of 2: show a pop-up of users that match the @mention found at the end of the text entry
// @author       Jeremiah 20:9
// @match        https://gab.ai/home
// @grant        none
// @require      https://code.jquery.com/jquery-1.8.2.js
// ==/UserScript==
var followers = localStorage.getItem("gab-user-followers");
var following = localStorage.getItem("gab-user-following");
var availableTags = [];

if(followers)
{
    availableTags = availableTags.concat(JSON.parse(followers));
}
if(following)
{
    availableTags = availableTags.concat(JSON.parse(following));
}
var subset = [];
var itvcheck = -1;
var choiceidx = 0;
function checkfortxt()
{
    if($( ".composer--open > .composer__content > textarea" ).length > 0)
    {
        clearInterval(itvcheck);
        var ops = document.createElement("div");
        $(ops).css("position", "absolute");
        $(ops).css("left", "50px");
        $(ops).css("bottom", "0px");
        $(ops).css("width", "300px");
        $(ops).css("height", "100px");
        $(ops).css("background-color", "white");
        $(ops).css("box-shadow", "0px 0px 2px rgba(0,0,0,.5)");
        $(ops).css("display", "none");
        
        $(".composer__content").append(ops);
        
        $( ".composer__content > textarea" ).on("keydown", function(evt){
            var txt = $(".composer__content > textarea").val();
            
            var regex = new RegExp("^[a-zA-Z0-9_-]+$");
            var str = String.fromCharCode(!evt.charCode ? evt.which : evt.charCode);
            if (!regex.test(str) && evt.which != 38 && evt.which != 40 && evt.which != 13 && evt.which != 8 && evt.which != 46) {
                $(ops).css("display", "none");
                return;
            }
            else if(evt.which != 38 && evt.which != 40 && evt.which != 13 && evt.which != 8 && evt.which != 46)
                txt += evt.key;
            
            var rex = /@[A-Za-z]+[A-Za-z0-9_-]*$/g;
            var userinfo = rex.exec(txt);

            if(!userinfo)
            {
                $(ops).css("display", "none");
                return;
            }
            var user = userinfo[0].substr(1); // strip the "@"
            subset = [];
            for(var a = 0; a < availableTags.length && subset.length < 3; a++)
            {
                if(user.toLowerCase() == availableTags[a].atname.toLowerCase().substr(0,user.length) || user.toLowerCase() == availableTags[a].name.toLowerCase().substr(0,user.length))
                {
                    var found = false;
                    for(var s in subset)
                    {
                        if(availableTags[a].atname == subset[s].atname)
                        {
                            found = true;
                            break;
                        }
                    }
                    if(!found)
                        subset.push(availableTags[a]);
                }
            }
            if(subset.length === 0)
            {
                $(ops).css("display", "none");
                return;
            }
            else
            {
                $(ops).css("height", (subset.length * 30) + "px");
            }
            if(evt.which == 38) // up
            {
                evt.preventDefault();
                choiceidx--;
                if(choiceidx < 0)
                    choiceidx = subset.length - 1;
            }
            else if(evt.which == 40) //down
            {
                evt.preventDefault();
                choiceidx++;
                if(choiceidx >= subset.length)
                    choiceidx = 0;
            }
            else if(evt.which == 13)
            {
                evt.preventDefault();
                $(".composer__content > textarea").val(txt.substr(0, txt.length-user.length) + subset[choiceidx].atname + " ");
                $(ops).css("display", "none");
                return;
            }
            var render = "";
            for(var c = 0; c < subset.length; c++)
            {
                render += "<div style='padding:3px; position:absolute;width:300px;height:30px;top:" + (c * 30) + "px;";
                if(c == choiceidx)
                    render += "background-color:blue;color:white;";
                else
                    render += "color:black;";
                render += "'>";
                render += "<img src='"+subset[c].pic+"' style='height:24px; width:24px; border-radius:12px; margin-right:4px' align='left' />";
                render += "" + subset[c].name + "";
                render += "<span style='margin-left:4px;font-style:italic;opacity:0.7;'>@" + subset[c].atname + "</span>";
                render += "</div>";
            }
            $(ops).html(render);
            $(ops).css("display", "block");
        });
    }
}
$("document").ready(function(){
    itvcheck = setInterval(checkfortxt, 500);
});