lightgallery/plugins/autoplay/lg-autoplay.umd.js

/*!
 * lightgallery | 2.5.0 | June 13th 2022
 * http://www.lightgalleryjs.com/
 * Copyright (c) 2020 Sachin Neravath;
 * @license GPLv3
 */

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.lgAutoplay = factory());
}(this, (function () { 'use strict';

    /*! *****************************************************************************
    Copyright (c) Microsoft Corporation.

    Permission to use, copy, modify, and/or distribute this software for any
    purpose with or without fee is hereby granted.

    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
    REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
    AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
    INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
    LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
    OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
    PERFORMANCE OF THIS SOFTWARE.
    ***************************************************************************** */

    var __assign = function() {
        __assign = Object.assign || function __assign(t) {
            for (var s, i = 1, n = arguments.length; i < n; i++) {
                s = arguments[i];
                for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
            }
            return t;
        };
        return __assign.apply(this, arguments);
    };

    /**
     * List of lightGallery events
     * All events should be documented here
     * Below interfaces are used to build the website documentations
     * */
    var lGEvents = {
        afterAppendSlide: 'lgAfterAppendSlide',
        init: 'lgInit',
        hasVideo: 'lgHasVideo',
        containerResize: 'lgContainerResize',
        updateSlides: 'lgUpdateSlides',
        afterAppendSubHtml: 'lgAfterAppendSubHtml',
        beforeOpen: 'lgBeforeOpen',
        afterOpen: 'lgAfterOpen',
        slideItemLoad: 'lgSlideItemLoad',
        beforeSlide: 'lgBeforeSlide',
        afterSlide: 'lgAfterSlide',
        posterClick: 'lgPosterClick',
        dragStart: 'lgDragStart',
        dragMove: 'lgDragMove',
        dragEnd: 'lgDragEnd',
        beforeNextSlide: 'lgBeforeNextSlide',
        beforePrevSlide: 'lgBeforePrevSlide',
        beforeClose: 'lgBeforeClose',
        afterClose: 'lgAfterClose',
        rotateLeft: 'lgRotateLeft',
        rotateRight: 'lgRotateRight',
        flipHorizontal: 'lgFlipHorizontal',
        flipVertical: 'lgFlipVertical',
        autoplay: 'lgAutoplay',
        autoplayStart: 'lgAutoplayStart',
        autoplayStop: 'lgAutoplayStop',
    };

    var autoplaySettings = {
        autoplay: true,
        slideShowAutoplay: false,
        slideShowInterval: 5000,
        progressBar: true,
        forceSlideShowAutoplay: false,
        autoplayControls: true,
        appendAutoplayControlsTo: '.lg-toolbar',
        autoplayPluginStrings: {
            toggleAutoplay: 'Toggle Autoplay',
        },
    };

    /**
     * Creates the autoplay plugin.
     * @param {object} element - lightGallery element
     */
    var Autoplay = /** @class */ (function () {
        function Autoplay(instance) {
            this.core = instance;
            // extend module default settings with lightGallery core settings
            this.settings = __assign(__assign({}, autoplaySettings), this.core.settings);
            return this;
        }
        Autoplay.prototype.init = function () {
            var _this = this;
            if (!this.settings.autoplay) {
                return;
            }
            this.interval = false;
            // Identify if slide happened from autoplay
            this.fromAuto = true;
            // Identify if autoplay canceled from touch/drag
            this.pausedOnTouchDrag = false;
            this.pausedOnSlideChange = false;
            // append autoplay controls
            if (this.settings.autoplayControls) {
                this.controls();
            }
            // Create progress bar
            if (this.settings.progressBar) {
                this.core.outer.append('<div class="lg-progress-bar"><div class="lg-progress"></div></div>');
            }
            // Start autoplay
            if (this.settings.slideShowAutoplay) {
                this.core.LGel.once(lGEvents.slideItemLoad + ".autoplay", function () {
                    _this.startAutoPlay();
                });
            }
            // cancel interval on touchstart and dragstart
            this.core.LGel.on(lGEvents.dragStart + ".autoplay touchstart.lg.autoplay", function () {
                if (_this.interval) {
                    _this.stopAutoPlay();
                    _this.pausedOnTouchDrag = true;
                }
            });
            // restore autoplay if autoplay canceled from touchstart / dragstart
            this.core.LGel.on(lGEvents.dragEnd + ".autoplay touchend.lg.autoplay", function () {
                if (!_this.interval && _this.pausedOnTouchDrag) {
                    _this.startAutoPlay();
                    _this.pausedOnTouchDrag = false;
                }
            });
            this.core.LGel.on(lGEvents.beforeSlide + ".autoplay", function () {
                _this.showProgressBar();
                if (!_this.fromAuto && _this.interval) {
                    _this.stopAutoPlay();
                    _this.pausedOnSlideChange = true;
                }
                else {
                    _this.pausedOnSlideChange = false;
                }
                _this.fromAuto = false;
            });
            // restore autoplay if autoplay canceled from touchstart / dragstart
            this.core.LGel.on(lGEvents.afterSlide + ".autoplay", function () {
                if (_this.pausedOnSlideChange &&
                    !_this.interval &&
                    _this.settings.forceSlideShowAutoplay) {
                    _this.startAutoPlay();
                    _this.pausedOnSlideChange = false;
                }
            });
            // set progress
            this.showProgressBar();
        };
        Autoplay.prototype.showProgressBar = function () {
            var _this = this;
            if (this.settings.progressBar && this.fromAuto) {
                var _$progressBar_1 = this.core.outer.find('.lg-progress-bar');
                var _$progress_1 = this.core.outer.find('.lg-progress');
                if (this.interval) {
                    _$progress_1.removeAttr('style');
                    _$progressBar_1.removeClass('lg-start');
                    setTimeout(function () {
                        _$progress_1.css('transition', 'width ' +
                            (_this.core.settings.speed +
                                _this.settings.slideShowInterval) +
                            'ms ease 0s');
                        _$progressBar_1.addClass('lg-start');
                    }, 20);
                }
            }
        };
        // Manage autoplay via play/stop buttons
        Autoplay.prototype.controls = function () {
            var _this = this;
            var _html = "<button aria-label=\"" + this.settings.autoplayPluginStrings['toggleAutoplay'] + "\" type=\"button\" class=\"lg-autoplay-button lg-icon\"></button>";
            // Append autoplay controls
            this.core.outer
                .find(this.settings.appendAutoplayControlsTo)
                .append(_html);
            this.core.outer
                .find('.lg-autoplay-button')
                .first()
                .on('click.lg.autoplay', function () {
                if (_this.core.outer.hasClass('lg-show-autoplay')) {
                    _this.stopAutoPlay();
                }
                else {
                    if (!_this.interval) {
                        _this.startAutoPlay();
                    }
                }
            });
        };
        // Autostart gallery
        Autoplay.prototype.startAutoPlay = function () {
            var _this = this;
            this.core.outer
                .find('.lg-progress')
                .css('transition', 'width ' +
                (this.core.settings.speed +
                    this.settings.slideShowInterval) +
                'ms ease 0s');
            this.core.outer.addClass('lg-show-autoplay');
            this.core.outer.find('.lg-progress-bar').addClass('lg-start');
            this.core.LGel.trigger(lGEvents.autoplayStart, {
                index: this.core.index,
            });
            this.interval = setInterval(function () {
                if (_this.core.index + 1 < _this.core.galleryItems.length) {
                    _this.core.index++;
                }
                else {
                    _this.core.index = 0;
                }
                _this.core.LGel.trigger(lGEvents.autoplay, {
                    index: _this.core.index,
                });
                _this.fromAuto = true;
                _this.core.slide(_this.core.index, false, false, 'next');
            }, this.core.settings.speed + this.settings.slideShowInterval);
        };
        // cancel Autostart
        Autoplay.prototype.stopAutoPlay = function () {
            if (this.interval) {
                this.core.LGel.trigger(lGEvents.autoplayStop, {
                    index: this.core.index,
                });
                this.core.outer.find('.lg-progress').removeAttr('style');
                this.core.outer.removeClass('lg-show-autoplay');
                this.core.outer.find('.lg-progress-bar').removeClass('lg-start');
            }
            clearInterval(this.interval);
            this.interval = false;
        };
        Autoplay.prototype.closeGallery = function () {
            this.stopAutoPlay();
        };
        Autoplay.prototype.destroy = function () {
            if (this.settings.autoplay) {
                this.core.outer.find('.lg-progress-bar').remove();
            }
            // Remove all event listeners added by autoplay plugin
            this.core.LGel.off('.lg.autoplay');
            this.core.LGel.off('.autoplay');
        };
        return Autoplay;
    }());

    return Autoplay;

})));
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