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Expand cengage mindtap Textbook Display Width

Make ebook display utilize full screen width

Ekde 2018/03/15. Vidu La ĝisdata versio. 

// ==UserScript==
// @name         Expand cengage mindtap Textbook Display Width
// @version      0.1
// @description  Make ebook display utilize full screen width
// @author       magickaiyang
// @namespace    kaiyang
// @include     http://ng.cengage.com/static/nbreader/ui/apps/nbreader/nbreader.html*
// @require     https://code.jquery.com/jquery-3.3.1.slim.min.js
// ==/UserScript==

waitForKeyElements ("div.container", actionFunction);

function actionFunction (node) {
    node.css ("max-width",'unset');
}

function waitForKeyElements (
    selectorTxt,    
    actionFunction,
    bWaitOnce,
    iframeSelector
) {
    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;
}