stop.js

/**
 * Stop Plugin
 *
 * Example:
 *
 *        <!-- Stop at this slide.
 *             (For example, when used on the last slide, this prevents the
 *             presentation from wrapping back to the beginning.) -->
 *        <div class="step stop">
 *
 * Copyright 2016 Henrik Ingo (@henrikingo)
 * Released under the MIT license.
 */
/* global document, window */
( function( document, window ) {
    "use strict";

    var stop = function( event ) {
        if ( ( !event ) || ( !event.target ) ) {
            return;
        }

        if ( event.target.classList.contains( "stop" ) ) {
            if ( event.detail.reason === "next" ) {
                return false;
            }
        }
    };

    // Register the plugin to be called in pre-stepleave phase
    // The weight makes this plugin run fairly early.
    window.impress.addPreStepLeavePlugin( stop, 2 );

} )( document, window );