B4a Character Counter in Replies

b4a-character-counter.js

// ==UserScript==
// @name         B4A
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Simply gets the characters count towards a message
// @author       0x90
// @match        https://*.board4all.biz/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=board4all.biz
// @grant        none
// @require      https://code.jquery.com/jquery-3.6.0.slim.min.js
// ==/UserScript==

/*--- waitForKeyElements():  A utility function, for Greasemonkey scripts,
    that detects and handles AJAXed content.

    Usage example:

        waitForKeyElements (
            "div.comments"
            , commentCallbackFunction
        );

        //--- Page-specific function to do what we want when the node is found.
        function commentCallbackFunction (jNode) {
            jNode.text ("This comment changed by waitForKeyElements().");
        }

    IMPORTANT: This function requires your script to have loaded jQuery.
*/
function waitForKeyElements (
    selectorTxt,    /* Required: The jQuery selector string that
                        specifies the desired element(s).
                    */
    actionFunction, /* Required: The code to run when elements are
                        found. It is passed a jNode to the matched
                        element.
                    */
    bWaitOnce,      /* Optional: If false, will continue to scan for
                        new elements even after the first match is
                        found.
                    */
    iframeSelector  /* Optional: If set, identifies the iframe to
                        search.
                    */
) {
    var targetNodes, btargetsFound;

    if (typeof iframeSelector == "undefined")
        targetNodes = $(selectorTxt);
    else
        targetNodes = $(iframeSelector).contents ()
                                           .find (selectorTxt);

    if (targetNodes && targetNodes.length > 0) {
        btargetsFound = true;
        /*--- Found target node(s).  Go through each and act if they
            are new.
        */
        targetNodes.each ( function () {
            var jThis = $(this);
            var alreadyFound = jThis.data ('alreadyFound')  ||  false;

            if (!alreadyFound) {
                //--- Call the payload function.
                var cancelFound = actionFunction (jThis);
                if (cancelFound)
                    btargetsFound = false;
                else
                    jThis.data ('alreadyFound', true);
            }
        } );
    }
    else {
        btargetsFound = false;
    }

    //--- Get the timer-control variable for this selector.
    var controlObj = waitForKeyElements.controlObj  ||  {};
    var controlKey = selectorTxt.replace (/[^\w]/g, "_");
    var timeControl = controlObj [controlKey];

    //--- Now set or clear the timer as appropriate.
    if (btargetsFound  &&  bWaitOnce  &&  timeControl) {
        //--- The only condition where we need to clear the timer.
        clearInterval (timeControl);
        delete controlObj [controlKey]
    }
    else {
        //--- Set a timer, if needed.
        if ( ! timeControl) {
            timeControl = setInterval ( function () {
                    waitForKeyElements (    selectorTxt,
                                            actionFunction,
                                            bWaitOnce,
                                            iframeSelector
                                        );
                },
                300
            );
            controlObj [controlKey] = timeControl;
        }
    }
    waitForKeyElements.controlObj = controlObj;
}


(function() {
    'use strict';
    var currentLength = 0;
    var target = '.message-editorWrapper > div:nth-child(8)'
    var element = "<span class='fr-placeholder' style='font-size: 13px; line-height: 19.5px; margin-top: 0px; padding-top: 5px; padding-bottom: 5px; margin-left: 0px; padding-right: 20px; text-align: right; display: grid; color: deepskyblue;' id='counter'>20,000/20,000 (Characters Left)</span>"
    waitForKeyElements(target, (el)=>{
        $(element).appendTo(el)
        $(target)[0].addEventListener('input', function (e) {
             const tg = $('#top > div.focus-content > div.p-body > div > div.p-body-main > div.p-body-content > div > form > div > div > div > div > div.message-cell.message-cell--main > div > div.fr-box.bbWrapper.fr-ltr.fr-basic.fr-top > div.fr-wrapper').text().replace('Write your reply...', '');

            // Count the current number of characters
            const currentLength = tg.length;
            $('#counter')[0].innerHTML = `${currentLength}/20,000 (Characters Left)`;
        });
    })
})();