decktape/plugins/reveal.js

function Reveal(page) {
    this.page = page;
}

Reveal.prototype = {

    getName: function () {
        return "Reveal JS";
    },

    isActive: function () {
        return this.page.evaluate(function () {
            if (typeof Reveal === "undefined")
                return false;

            if (!(typeof Reveal.isLastSlide === "function")) {
                console.log("Reveal JS plugin isn't compatible with reveal.js version < 2.3.0");
                return false;
            }

            return true;
        });
    },

    configure: function () {
        this.page.evaluate(function () {
            Reveal.configure({ controls: false, progress: false });
        });
    },

    slideCount: function () {
        return this.page.evaluate(function () {
            // TODO: the getTotalSlides API does not report the number of slides accurately as it does not take stacks and some index-less fragments into account
            // getTotalSlides API is only available starting reveal.js version 3.0.0
            return typeof Reveal.getTotalSlides === "function" ? Reveal.getTotalSlides() : undefined;
        });
    },

    hasNextSlide: function () {
        return this.page.evaluate(function () {
            return !Reveal.isLastSlide();
        });
    },

    nextSlide: function () {
        this.page.evaluate(function () {
            Reveal.next();
        });
    },

    currentSlideIndex: function () {
        return this.page.evaluate(function () {
            var indices = Reveal.getIndices();
            var id = Reveal.getCurrentSlide().getAttribute("id");
            if (typeof id === "string" && id.length)
                return '/' + id;
            else
                return '/' + indices.h + (indices.v > 0 ? '/' + indices.v : '');
        });
    }
};

exports.create = function (page) {
    return new Reveal(page);
};