diff --git a/app/src/assets/scss/viewerjs/_viewer.scss b/app/src/assets/scss/viewerjs/_viewer.scss
index 423133f70..3de101399 100644
--- a/app/src/assets/scss/viewerjs/_viewer.scss
+++ b/app/src/assets/scss/viewerjs/_viewer.scss
@@ -244,11 +244,18 @@
     display: inline-block;
     font-size: 12px;
     line-height: 1.2;
-    margin: 0 5% 5px;
+    margin: 5px 5%;
     max-width: 90%;
+    min-height: 14px;
+    opacity: 0.8;
     overflow: hidden;
     text-overflow: ellipsis;
+    transition: opacity 0.15s;
     white-space: nowrap;
+
+    &:hover {
+      opacity: 1;
+    }
   }
 
   &-button {
diff --git a/app/src/protyle/preview/image.ts b/app/src/protyle/preview/image.ts
index 66447a3cf..fd06d233b 100644
--- a/app/src/protyle/preview/image.ts
+++ b/app/src/protyle/preview/image.ts
@@ -3,46 +3,46 @@ import {addScript} from "../util/addScript";
 import {fetchPost} from "../../util/fetch";
 
 export const previewImage = (src: string) => {
-    addScript(`${Constants.PROTYLE_CDN}/js/viewerjs/viewer.js?v=1.10.4`, "protyleViewerScript").then(() => {
-            const imagesElement = document.createElement("ul");
-            imagesElement.innerHTML = `<li><img src="${src}"></li>`;
-            window.siyuan.viewer = new Viewer(imagesElement, {
-                title: [1, (image: HTMLImageElement, imageData: IObject) => {
-                    let name = image.alt;
-                    if (!name) {
-                        name = image.src.substring(image.src.lastIndexOf("/") + 1);
-                    }
-                    name = name.substring(0, name.lastIndexOf(".")).replace(/-\d{14}-\w{7}$/, "");
-                    return `${name} [${imageData.naturalWidth} × ${imageData.naturalHeight}]`;
-                }],
-                button: false,
-                transition: false,
-                hidden: function () {
+    addScript(`${Constants.PROTYLE_CDN}/js/viewerjs/viewer.js?v=1.11.7`, "protyleViewerScript").then(() => {
+        const imagesElement = document.createElement("ul");
+        imagesElement.innerHTML = `<li><img src="${src}"></li>`;
+        window.siyuan.viewer = new Viewer(imagesElement, {
+            title: [1, (image: HTMLImageElement, imageData: IObject) => {
+                let name = image.alt;
+                if (!name) {
+                    name = image.src.substring(image.src.lastIndexOf("/") + 1);
+                }
+                name = name.substring(0, name.lastIndexOf(".")).replace(/-\d{14}-\w{7}$/, "");
+                return `${name} [${imageData.naturalWidth} × ${imageData.naturalHeight}]`;
+            }],
+            button: false,
+            transition: false,
+            hidden: function () {
+                window.siyuan.viewer.destroy();
+            },
+            toolbar: {
+                zoomIn: true,
+                zoomOut: true,
+                oneToOne: true,
+                reset: true,
+                prev: true,
+                play: true,
+                next: true,
+                rotateLeft: true,
+                rotateRight: true,
+                flipHorizontal: true,
+                flipVertical: true,
+                close: function () {
                     window.siyuan.viewer.destroy();
                 },
-                toolbar: {
-                    zoomIn: true,
-                    zoomOut: true,
-                    oneToOne: true,
-                    reset: true,
-                    prev: true,
-                    play: true,
-                    next: true,
-                    rotateLeft: true,
-                    rotateRight: true,
-                    flipHorizontal: true,
-                    flipVertical: true,
-                    close: function () {
-                        window.siyuan.viewer.destroy();
-                    },
-                },
-            });
-            window.siyuan.viewer.show();
+            },
+        });
+        window.siyuan.viewer.show();
     });
 };
 
 export const previewDocImage = (src: string, id: string) => {
-    addScript(`${Constants.PROTYLE_CDN}/js/viewerjs/viewer.js?v=1.10.4`, "protyleViewerScript").then(() => {
+    addScript(`${Constants.PROTYLE_CDN}/js/viewerjs/viewer.js?v=1.11.7`, "protyleViewerScript").then(() => {
         fetchPost("/api/asset/getDocImageAssets", {id}, (response) => {
             const imagesElement = document.createElement("ul");
             let html = "";
diff --git a/app/src/protyle/preview/index.ts b/app/src/protyle/preview/index.ts
index 54791f88d..446d370f9 100644
--- a/app/src/protyle/preview/index.ts
+++ b/app/src/protyle/preview/index.ts
@@ -113,7 +113,7 @@ export class Preview {
                     }
                     break;
                 } else if (target.tagName === "IMG") {
-                    previewDocImage((event.target as HTMLImageElement).src, protyle.block.rootID);
+                    previewDocImage((event.target as HTMLElement).getAttribute("src"), protyle.block.rootID);
                     event.stopPropagation();
                     event.preventDefault();
                     break;
diff --git a/app/src/protyle/wysiwyg/index.ts b/app/src/protyle/wysiwyg/index.ts
index 0e0a24cff..44c9f7b17 100644
--- a/app/src/protyle/wysiwyg/index.ts
+++ b/app/src/protyle/wysiwyg/index.ts
@@ -2150,7 +2150,7 @@ export class WYSIWYG {
 
         this.element.addEventListener("dblclick", (event: MouseEvent & { target: HTMLElement }) => {
             if (event.target.tagName === "IMG" && !event.target.classList.contains("emoji")) {
-                previewDocImage((event.target as HTMLImageElement).src, protyle.block.rootID);
+                previewDocImage((event.target as HTMLElement).getAttribute("src"), protyle.block.rootID);
                 return;
             }
         });
diff --git a/app/stage/protyle/js/viewerjs/viewer.js b/app/stage/protyle/js/viewerjs/viewer.js
index 3c67f9293..c659da620 100644
--- a/app/stage/protyle/js/viewerjs/viewer.js
+++ b/app/stage/protyle/js/viewerjs/viewer.js
@@ -1,3685 +1,10 @@
 /*!
- * Viewer.js v1.10.4
+ * Viewer.js v1.11.7
  * https://fengyuanchen.github.io/viewerjs
  *
  * Copyright 2015-present Chen Fengyuan
  * Released under the MIT license
  *
- * Date: 2022-02-13T08:40:00.127Z
+ * Date: 2024-12-07T02:18:04.739Z
  */
-
-(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.Viewer = factory())
-})(this, (function () {
-  'use strict'
-
-  function ownKeys (object, enumerableOnly) {
-    var keys = Object.keys(object)
-
-    if (Object.getOwnPropertySymbols) {
-      var symbols = Object.getOwnPropertySymbols(object)
-      enumerableOnly && (symbols = symbols.filter(function (sym) {
-        return Object.getOwnPropertyDescriptor(object, sym).enumerable
-      })), keys.push.apply(keys, symbols)
-    }
-
-    return keys
-  }
-
-  function _objectSpread2 (target) {
-    for (var i = 1; i < arguments.length; i++) {
-      var source = null != arguments[i] ? arguments[i] : {}
-      i % 2 ? ownKeys(Object(source), !0).forEach(function (key) {
-        _defineProperty(target, key, source[key])
-      }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target,
-        Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).
-        forEach(function (key) {
-          Object.defineProperty(target, key,
-            Object.getOwnPropertyDescriptor(source, key))
-        })
-    }
-
-    return target
-  }
-
-  function _typeof (obj) {
-    '@babel/helpers - typeof'
-
-    return _typeof = 'function' == typeof Symbol && 'symbol' ==
-    typeof Symbol.iterator ? function (obj) {
-      return typeof obj
-    } : function (obj) {
-      return obj && 'function' == typeof Symbol && obj.constructor === Symbol &&
-      obj !== Symbol.prototype ? 'symbol' : typeof obj
-    }, _typeof(obj)
-  }
-
-  function _classCallCheck (instance, Constructor) {
-    if (!(instance instanceof Constructor)) {
-      throw new TypeError('Cannot call a class as a function')
-    }
-  }
-
-  function _defineProperties (target, props) {
-    for (var i = 0; i < props.length; i++) {
-      var descriptor = props[i]
-      descriptor.enumerable = descriptor.enumerable || false
-      descriptor.configurable = true
-      if ('value' in descriptor) descriptor.writable = true
-      Object.defineProperty(target, descriptor.key, descriptor)
-    }
-  }
-
-  function _createClass (Constructor, protoProps, staticProps) {
-    if (protoProps) _defineProperties(Constructor.prototype, protoProps)
-    if (staticProps) _defineProperties(Constructor, staticProps)
-    Object.defineProperty(Constructor, 'prototype', {
-      writable: false,
-    })
-    return Constructor
-  }
-
-  function _defineProperty (obj, key, value) {
-    if (key in obj) {
-      Object.defineProperty(obj, key, {
-        value: value, enumerable: true, configurable: true, writable: true,
-      })
-    } else {
-      obj[key] = value
-    }
-
-    return obj
-  }
-
-  var DEFAULTS = {
-    /**
-     * Enable a modal backdrop, specify `static` for a backdrop
-     * which doesn't close the modal on click.
-     * @type {boolean}
-     */
-    backdrop: true,
-
-    /**
-     * Show the button on the top-right of the viewer.
-     * @type {boolean}
-     */
-    button: true,
-
-    /**
-     * Show the navbar.
-     * @type {boolean | number}
-     */
-    navbar: true,
-
-    /**
-     * Specify the visibility and the content of the title.
-     * @type {boolean | number | Function | Array}
-     */
-    title: true,
-
-    /**
-     * Show the toolbar.
-     * @type {boolean | number | Object}
-     */
-    toolbar: true,
-
-    /**
-     * Custom class name(s) to add to the viewer's root element.
-     * @type {string}
-     */
-    className: '',
-
-    /**
-     * Define where to put the viewer in modal mode.
-     * @type {string | Element}
-     */
-    container: 'body',
-
-    /**
-     * Filter the images for viewing. Return true if the image is viewable.
-     * @type {Function}
-     */
-    filter: null,
-
-    /**
-     * Enable to request fullscreen when play.
-     * {@link https://developer.mozilla.org/en-US/docs/Web/API/FullscreenOptions}
-     * @type {boolean|FullscreenOptions}
-     */
-    fullscreen: true,
-
-    /**
-     * Define the extra attributes to inherit from the original image.
-     * @type {Array}
-     */
-    inheritedAttributes: [
-      'crossOrigin',
-      'decoding',
-      'isMap',
-      'loading',
-      'referrerPolicy',
-      'sizes',
-      'srcset',
-      'useMap'],
-
-    /**
-     * Define the initial index of image for viewing.
-     * @type {number}
-     */
-    initialViewIndex: 0,
-
-    /**
-     * Enable inline mode.
-     * @type {boolean}
-     */
-    inline: false,
-
-    /**
-     * The amount of time to delay between automatically cycling an image when playing.
-     * @type {number}
-     */
-    interval: 5000,
-
-    /**
-     * Enable keyboard support.
-     * @type {boolean}
-     */
-    keyboard: true,
-
-    /**
-     * Focus the viewer when initialized.
-     * @type {boolean}
-     */
-    focus: true,
-
-    /**
-     * Indicate if show a loading spinner when load image or not.
-     * @type {boolean}
-     */
-    loading: true,
-
-    /**
-     * Indicate if enable loop viewing or not.
-     * @type {boolean}
-     */
-    loop: true,
-
-    /**
-     * Min width of the viewer in inline mode.
-     * @type {number}
-     */
-    minWidth: 200,
-
-    /**
-     * Min height of the viewer in inline mode.
-     * @type {number}
-     */
-    minHeight: 100,
-
-    /**
-     * Enable to move the image.
-     * @type {boolean}
-     */
-    movable: true,
-
-    /**
-     * Enable to rotate the image.
-     * @type {boolean}
-     */
-    rotatable: true,
-
-    /**
-     * Enable to scale the image.
-     * @type {boolean}
-     */
-    scalable: true,
-
-    /**
-     * Enable to zoom the image.
-     * @type {boolean}
-     */
-    zoomable: true,
-
-    /**
-     * Enable to zoom the current image by dragging on the touch screen.
-     * @type {boolean}
-     */
-    zoomOnTouch: true,
-
-    /**
-     * Enable to zoom the image by wheeling mouse.
-     * @type {boolean}
-     */
-    zoomOnWheel: true,
-
-    /**
-     * Enable to slide to the next or previous image by swiping on the touch screen.
-     * @type {boolean}
-     */
-    slideOnTouch: true,
-
-    /**
-     * Indicate if toggle the image size between its natural size
-     * and initial size when double click on the image or not.
-     * @type {boolean}
-     */
-    toggleOnDblclick: true,
-
-    /**
-     * Show the tooltip with image ratio (percentage) when zoom in or zoom out.
-     * @type {boolean}
-     */
-    tooltip: true,
-
-    /**
-     * Enable CSS3 Transition for some special elements.
-     * @type {boolean}
-     */
-    transition: true,
-
-    /**
-     * Define the CSS `z-index` value of viewer in modal mode.
-     * @type {number}
-     */
-    zIndex: 2015,
-
-    /**
-     * Define the CSS `z-index` value of viewer in inline mode.
-     * @type {number}
-     */
-    zIndexInline: 0,
-
-    /**
-     * Define the ratio when zoom the image by wheeling mouse.
-     * @type {number}
-     */
-    zoomRatio: 0.1,
-
-    /**
-     * Define the min ratio of the image when zoom out.
-     * @type {number}
-     */
-    minZoomRatio: 0.01,
-
-    /**
-     * Define the max ratio of the image when zoom in.
-     * @type {number}
-     */
-    maxZoomRatio: 100,
-
-    /**
-     * Define where to get the original image URL for viewing.
-     * @type {string | Function}
-     */
-    url: 'src',
-
-    /**
-     * Event shortcuts.
-     * @type {Function}
-     */
-    ready: null,
-    show: null,
-    shown: null,
-    hide: null,
-    hidden: null,
-    view: null,
-    viewed: null,
-    move: null,
-    moved: null,
-    rotate: null,
-    rotated: null,
-    scale: null,
-    scaled: null,
-    zoom: null,
-    zoomed: null,
-    play: null,
-    stop: null,
-  }
-
-  var TEMPLATE = '<div class="viewer-container" tabindex="-1" touch-action="none">' +
-    '<div class="viewer-canvas"></div>' + '<div class="viewer-footer">' +
-    '<div class="viewer-title"></div>' + '<div class="viewer-toolbar"></div>' +
-    '<div class="viewer-navbar">' +
-    '<ul class="viewer-list" role="navigation"></ul>' + '</div>' + '</div>' +
-    '<div class="viewer-tooltip" role="alert" aria-hidden="true"></div>' +
-    '<div class="viewer-button" data-viewer-action="mix" role="button"></div>' +
-    '<div class="viewer-player"></div>' + '</div>'
-
-  var IS_BROWSER = typeof window !== 'undefined' && typeof window.document !==
-    'undefined'
-  var WINDOW = IS_BROWSER ? window : {}
-  var IS_TOUCH_DEVICE = IS_BROWSER && WINDOW.document.documentElement
-    ? 'ontouchstart' in WINDOW.document.documentElement
-    : false
-  var HAS_POINTER_EVENT = IS_BROWSER ? 'PointerEvent' in WINDOW : false
-  var NAMESPACE = 'viewer' // Actions
-
-  var ACTION_MOVE = 'move'
-  var ACTION_SWITCH = 'switch'
-  var ACTION_ZOOM = 'zoom' // Classes
-
-  var CLASS_ACTIVE = ''.concat(NAMESPACE, '-active')
-  var CLASS_CLOSE = ''.concat(NAMESPACE, '-close')
-  var CLASS_FADE = ''.concat(NAMESPACE, '-fade')
-  var CLASS_FIXED = ''.concat(NAMESPACE, '-fixed')
-  var CLASS_FULLSCREEN = ''.concat(NAMESPACE, '-fullscreen')
-  var CLASS_FULLSCREEN_EXIT = ''.concat(NAMESPACE, '-fullscreen-exit')
-  var CLASS_HIDE = ''.concat(NAMESPACE, '-hide')
-  var CLASS_HIDE_MD_DOWN = ''.concat(NAMESPACE, '-hide-md-down')
-  var CLASS_HIDE_SM_DOWN = ''.concat(NAMESPACE, '-hide-sm-down')
-  var CLASS_HIDE_XS_DOWN = ''.concat(NAMESPACE, '-hide-xs-down')
-  var CLASS_IN = ''.concat(NAMESPACE, '-in')
-  var CLASS_INVISIBLE = ''.concat(NAMESPACE, '-invisible')
-  var CLASS_LOADING = ''.concat(NAMESPACE, '-loading')
-  var CLASS_MOVE = ''.concat(NAMESPACE, '-move')
-  var CLASS_OPEN = ''.concat(NAMESPACE, '-open')
-  var CLASS_SHOW = ''.concat(NAMESPACE, '-show')
-  var CLASS_TRANSITION = ''.concat(NAMESPACE, '-transition') // Native events
-
-  var EVENT_CLICK = 'click'
-  var EVENT_DBLCLICK = 'dblclick'
-  var EVENT_DRAG_START = 'dragstart'
-  var EVENT_FOCUSIN = 'focusin'
-  var EVENT_KEY_DOWN = 'keydown'
-  var EVENT_LOAD = 'load'
-  var EVENT_ERROR = 'error'
-  var EVENT_TOUCH_END = IS_TOUCH_DEVICE ? 'touchend touchcancel' : 'mouseup'
-  var EVENT_TOUCH_MOVE = IS_TOUCH_DEVICE ? 'touchmove' : 'mousemove'
-  var EVENT_TOUCH_START = IS_TOUCH_DEVICE ? 'touchstart' : 'mousedown'
-  var EVENT_POINTER_DOWN = HAS_POINTER_EVENT ? 'pointerdown' : EVENT_TOUCH_START
-  var EVENT_POINTER_MOVE = HAS_POINTER_EVENT ? 'pointermove' : EVENT_TOUCH_MOVE
-  var EVENT_POINTER_UP = HAS_POINTER_EVENT
-    ? 'pointerup pointercancel'
-    : EVENT_TOUCH_END
-  var EVENT_RESIZE = 'resize'
-  var EVENT_TRANSITION_END = 'transitionend'
-  var EVENT_WHEEL = 'wheel' // Custom events
-
-  var EVENT_READY = 'ready'
-  var EVENT_SHOW = 'show'
-  var EVENT_SHOWN = 'shown'
-  var EVENT_HIDE = 'hide'
-  var EVENT_HIDDEN = 'hidden'
-  var EVENT_VIEW = 'view'
-  var EVENT_VIEWED = 'viewed'
-  var EVENT_MOVE = 'move'
-  var EVENT_MOVED = 'moved'
-  var EVENT_ROTATE = 'rotate'
-  var EVENT_ROTATED = 'rotated'
-  var EVENT_SCALE = 'scale'
-  var EVENT_SCALED = 'scaled'
-  var EVENT_ZOOM = 'zoom'
-  var EVENT_ZOOMED = 'zoomed'
-  var EVENT_PLAY = 'play'
-  var EVENT_STOP = 'stop' // Data keys
-
-  var DATA_ACTION = ''.concat(NAMESPACE, 'Action') // RegExps
-
-  var REGEXP_SPACES = /\s\s*/ // Misc
-
-  var BUTTONS = [
-    'zoom-in',
-    'zoom-out',
-    'one-to-one',
-    'reset',
-    'prev',
-    'play',
-    'next',
-    'rotate-left',
-    'rotate-right',
-    'flip-horizontal',
-    'flip-vertical']
-
-  /**
-   * Check if the given value is a string.
-   * @param {*} value - The value to check.
-   * @returns {boolean} Returns `true` if the given value is a string, else `false`.
-   */
-
-  function isString (value) {
-    return typeof value === 'string'
-  }
-
-  /**
-   * Check if the given value is not a number.
-   */
-
-  var isNaN = Number.isNaN || WINDOW.isNaN
-
-  /**
-   * Check if the given value is a number.
-   * @param {*} value - The value to check.
-   * @returns {boolean} Returns `true` if the given value is a number, else `false`.
-   */
-
-  function isNumber (value) {
-    return typeof value === 'number' && !isNaN(value)
-  }
-
-  /**
-   * Check if the given value is undefined.
-   * @param {*} value - The value to check.
-   * @returns {boolean} Returns `true` if the given value is undefined, else `false`.
-   */
-
-  function isUndefined (value) {
-    return typeof value === 'undefined'
-  }
-
-  /**
-   * Check if the given value is an object.
-   * @param {*} value - The value to check.
-   * @returns {boolean} Returns `true` if the given value is an object, else `false`.
-   */
-
-  function isObject (value) {
-    return _typeof(value) === 'object' && value !== null
-  }
-
-  var hasOwnProperty = Object.prototype.hasOwnProperty
-
-  /**
-   * Check if the given value is a plain object.
-   * @param {*} value - The value to check.
-   * @returns {boolean} Returns `true` if the given value is a plain object, else `false`.
-   */
-
-  function isPlainObject (value) {
-    if (!isObject(value)) {
-      return false
-    }
-
-    try {
-      var _constructor = value.constructor
-      var prototype = _constructor.prototype
-      return _constructor && prototype &&
-        hasOwnProperty.call(prototype, 'isPrototypeOf')
-    } catch (error) {
-      return false
-    }
-  }
-
-  /**
-   * Check if the given value is a function.
-   * @param {*} value - The value to check.
-   * @returns {boolean} Returns `true` if the given value is a function, else `false`.
-   */
-
-  function isFunction (value) {
-    return typeof value === 'function'
-  }
-
-  /**
-   * Iterate the given data.
-   * @param {*} data - The data to iterate.
-   * @param {Function} callback - The process function for each element.
-   * @returns {*} The original data.
-   */
-
-  function forEach (data, callback) {
-    if (data && isFunction(callback)) {
-      if (Array.isArray(data) || isNumber(data.length)
-        /* array-like */) {
-        var length = data.length
-        var i
-
-        for (i = 0; i < length; i += 1) {
-          if (callback.call(data, data[i], i, data) === false) {
-            break
-          }
-        }
-      } else if (isObject(data)) {
-        Object.keys(data).forEach(function (key) {
-          callback.call(data, data[key], key, data)
-        })
-      }
-    }
-
-    return data
-  }
-
-  /**
-   * Extend the given object.
-   * @param {*} obj - The object to be extended.
-   * @param {*} args - The rest objects which will be merged to the first object.
-   * @returns {Object} The extended object.
-   */
-
-  var assign = Object.assign || function assign (obj) {
-    for (var _len = arguments.length, args = new Array(
-      _len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
-      args[_key - 1] = arguments[_key]
-    }
-
-    if (isObject(obj) && args.length > 0) {
-      args.forEach(function (arg) {
-        if (isObject(arg)) {
-          Object.keys(arg).forEach(function (key) {
-            obj[key] = arg[key]
-          })
-        }
-      })
-    }
-
-    return obj
-  }
-  var REGEXP_SUFFIX = /^(?:width|height|left|top|marginLeft|marginTop)$/
-
-  /**
-   * Apply styles to the given element.
-   * @param {Element} element - The target element.
-   * @param {Object} styles - The styles for applying.
-   */
-
-  function setStyle (element, styles) {
-    var style = element.style
-    forEach(styles, function (value, property) {
-      if (REGEXP_SUFFIX.test(property) && isNumber(value)) {
-        value += 'px'
-      }
-
-      style[property] = value
-    })
-  }
-
-  /**
-   * Escape a string for using in HTML.
-   * @param {String} value - The string to escape.
-   * @returns {String} Returns the escaped string.
-   */
-
-  function escapeHTMLEntities (value) {
-    return isString(value) ? value.replace(/&(?!amp;|quot;|#39;|lt;|gt;)/g,
-      '&amp;').
-      replace(/"/g, '&quot;').
-      replace(/'/g, '&#39;').
-      replace(/</g, '&lt;').
-      replace(/>/g, '&gt;') : value
-  }
-
-  /**
-   * Check if the given element has a special class.
-   * @param {Element} element - The element to check.
-   * @param {string} value - The class to search.
-   * @returns {boolean} Returns `true` if the special class was found.
-   */
-
-  function hasClass (element, value) {
-    if (!element || !value) {
-      return false
-    }
-
-    return element.classList
-      ? element.classList.contains(value)
-      : element.className.indexOf(value) > -1
-  }
-
-  /**
-   * Add classes to the given element.
-   * @param {Element} element - The target element.
-   * @param {string} value - The classes to be added.
-   */
-
-  function addClass (element, value) {
-    if (!element || !value) {
-      return
-    }
-
-    if (isNumber(element.length)) {
-      forEach(element, function (elem) {
-        addClass(elem, value)
-      })
-      return
-    }
-
-    if (element.classList) {
-      element.classList.add(value)
-      return
-    }
-
-    var className = element.className.trim()
-
-    if (!className) {
-      element.className = value
-    } else if (className.indexOf(value) < 0) {
-      element.className = ''.concat(className, ' ').concat(value)
-    }
-  }
-
-  /**
-   * Remove classes from the given element.
-   * @param {Element} element - The target element.
-   * @param {string} value - The classes to be removed.
-   */
-
-  function removeClass (element, value) {
-    if (!element || !value) {
-      return
-    }
-
-    if (isNumber(element.length)) {
-      forEach(element, function (elem) {
-        removeClass(elem, value)
-      })
-      return
-    }
-
-    if (element.classList) {
-      element.classList.remove(value)
-      return
-    }
-
-    if (element.className.indexOf(value) >= 0) {
-      element.className = element.className.replace(value, '')
-    }
-  }
-
-  /**
-   * Add or remove classes from the given element.
-   * @param {Element} element - The target element.
-   * @param {string} value - The classes to be toggled.
-   * @param {boolean} added - Add only.
-   */
-
-  function toggleClass (element, value, added) {
-    if (!value) {
-      return
-    }
-
-    if (isNumber(element.length)) {
-      forEach(element, function (elem) {
-        toggleClass(elem, value, added)
-      })
-      return
-    } // IE10-11 doesn't support the second parameter of `classList.toggle`
-
-    if (added) {
-      addClass(element, value)
-    } else {
-      removeClass(element, value)
-    }
-  }
-
-  var REGEXP_HYPHENATE = /([a-z\d])([A-Z])/g
-
-  /**
-   * Transform the given string from camelCase to kebab-case
-   * @param {string} value - The value to transform.
-   * @returns {string} The transformed value.
-   */
-
-  function hyphenate (value) {
-    return value.replace(REGEXP_HYPHENATE, '$1-$2').toLowerCase()
-  }
-
-  /**
-   * Get data from the given element.
-   * @param {Element} element - The target element.
-   * @param {string} name - The data key to get.
-   * @returns {string} The data value.
-   */
-
-  function getData (element, name) {
-    if (isObject(element[name])) {
-      return element[name]
-    }
-
-    if (element.dataset) {
-      return element.dataset[name]
-    }
-
-    return element.getAttribute('data-'.concat(hyphenate(name)))
-  }
-
-  /**
-   * Set data to the given element.
-   * @param {Element} element - The target element.
-   * @param {string} name - The data key to set.
-   * @param {string} data - The data value.
-   */
-
-  function setData (element, name, data) {
-    if (isObject(data)) {
-      element[name] = data
-    } else if (element.dataset) {
-      element.dataset[name] = data
-    } else {
-      element.setAttribute('data-'.concat(hyphenate(name)), data)
-    }
-  }
-
-  var onceSupported = function () {
-    var supported = false
-
-    if (IS_BROWSER) {
-      var once = false
-
-      var listener = function listener () {}
-
-      var options = Object.defineProperty({}, 'once', {
-        get: function get () {
-          supported = true
-          return once
-        },
-
-        /**
-         * This setter can fix a `TypeError` in strict mode
-         * {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Getter_only}
-         * @param {boolean} value - The value to set
-         */
-        set: function set (value) {
-          once = value
-        },
-      })
-      WINDOW.addEventListener('test', listener, options)
-      WINDOW.removeEventListener('test', listener, options)
-    }
-
-    return supported
-  }()
-
-  /**
-   * Remove event listener from the target element.
-   * @param {Element} element - The event target.
-   * @param {string} type - The event type(s).
-   * @param {Function} listener - The event listener.
-   * @param {Object} options - The event options.
-   */
-
-
-  function removeListener (element, type, listener) {
-    var options = arguments.length > 3 && arguments[3] !== undefined
-      ? arguments[3]
-      : {}
-    var handler = listener
-    type.trim().split(REGEXP_SPACES).forEach(function (event) {
-      if (!onceSupported) {
-        var listeners = element.listeners
-
-        if (listeners && listeners[event] && listeners[event][listener]) {
-          handler = listeners[event][listener]
-          delete listeners[event][listener]
-
-          if (Object.keys(listeners[event]).length === 0) {
-            delete listeners[event]
-          }
-
-          if (Object.keys(listeners).length === 0) {
-            delete element.listeners
-          }
-        }
-      }
-
-      element.removeEventListener(event, handler, options)
-    })
-  }
-
-  /**
-   * Add event listener to the target element.
-   * @param {Element} element - The event target.
-   * @param {string} type - The event type(s).
-   * @param {Function} listener - The event listener.
-   * @param {Object} options - The event options.
-   */
-
-  function addListener (element, type, listener) {
-    var options = arguments.length > 3 && arguments[3] !== undefined
-      ? arguments[3]
-      : {}
-    var _handler = listener
-    type.trim().split(REGEXP_SPACES).forEach(function (event) {
-      if (options.once && !onceSupported) {
-        var _element$listeners = element.listeners,
-          listeners = _element$listeners === void 0 ? {} : _element$listeners
-
-        _handler = function handler () {
-          delete listeners[event][listener]
-          element.removeEventListener(event, _handler, options)
-
-          for (var _len2 = arguments.length, args = new Array(
-            _len2), _key2 = 0; _key2 < _len2; _key2++) {
-            args[_key2] = arguments[_key2]
-          }
-
-          listener.apply(element, args)
-        }
-
-        if (!listeners[event]) {
-          listeners[event] = {}
-        }
-
-        if (listeners[event][listener]) {
-          element.removeEventListener(event, listeners[event][listener],
-            options)
-        }
-
-        listeners[event][listener] = _handler
-        element.listeners = listeners
-      }
-
-      element.addEventListener(event, _handler, options)
-    })
-  }
-
-  /**
-   * Dispatch event on the target element.
-   * @param {Element} element - The event target.
-   * @param {string} type - The event type(s).
-   * @param {Object} data - The additional event data.
-   * @param {Object} options - The additional event options.
-   * @returns {boolean} Indicate if the event is default prevented or not.
-   */
-
-  function dispatchEvent (element, type, data, options) {
-    var event // Event and CustomEvent on IE9-11 are global objects, not constructors
-
-    if (isFunction(Event) && isFunction(CustomEvent)) {
-      event = new CustomEvent(type, _objectSpread2({
-        bubbles: true, cancelable: true, detail: data,
-      }, options))
-    } else {
-      event = document.createEvent('CustomEvent')
-      event.initCustomEvent(type, true, true, data)
-    }
-
-    return element.dispatchEvent(event)
-  }
-
-  /**
-   * Get the offset base on the document.
-   * @param {Element} element - The target element.
-   * @returns {Object} The offset data.
-   */
-
-  function getOffset (element) {
-    var box = element.getBoundingClientRect()
-    return {
-      left: box.left +
-        (window.pageXOffset - document.documentElement.clientLeft),
-      top: box.top + (window.pageYOffset - document.documentElement.clientTop),
-    }
-  }
-
-  /**
-   * Get transforms base on the given object.
-   * @param {Object} obj - The target object.
-   * @returns {string} A string contains transform values.
-   */
-
-  function getTransforms (_ref) {
-    var rotate = _ref.rotate, scaleX = _ref.scaleX, scaleY = _ref.scaleY,
-      translateX = _ref.translateX, translateY = _ref.translateY
-    var values = []
-
-    if (isNumber(translateX) && translateX !== 0) {
-      values.push('translateX('.concat(translateX, 'px)'))
-    }
-
-    if (isNumber(translateY) && translateY !== 0) {
-      values.push('translateY('.concat(translateY, 'px)'))
-    } // Rotate should come first before scale to match orientation transform
-
-    if (isNumber(rotate) && rotate !== 0) {
-      values.push('rotate('.concat(rotate, 'deg)'))
-    }
-
-    if (isNumber(scaleX) && scaleX !== 1) {
-      values.push('scaleX('.concat(scaleX, ')'))
-    }
-
-    if (isNumber(scaleY) && scaleY !== 1) {
-      values.push('scaleY('.concat(scaleY, ')'))
-    }
-
-    var transform = values.length ? values.join(' ') : 'none'
-    return {
-      WebkitTransform: transform, msTransform: transform, transform: transform,
-    }
-  }
-
-  /**
-   * Get an image name from an image url.
-   * @param {string} url - The target url.
-   * @example
-   * // picture.jpg
-   * getImageNameFromURL('https://domain.com/path/to/picture.jpg?size=1280×960')
-   * @returns {string} A string contains the image name.
-   */
-
-  function getImageNameFromURL (url) {
-    return isString(url) ? decodeURIComponent(
-      url.replace(/^.*\//, '').replace(/[?&#].*$/, '')) : ''
-  }
-
-  var IS_SAFARI = WINDOW.navigator &&
-    /(Macintosh|iPhone|iPod|iPad).*AppleWebKit/i.test(
-      WINDOW.navigator.userAgent)
-
-  /**
-   * Get an image's natural sizes.
-   * @param {string} image - The target image.
-   * @param {Object} options - The viewer options.
-   * @param {Function} callback - The callback function.
-   * @returns {HTMLImageElement} The new image.
-   */
-
-  function getImageNaturalSizes (image, options, callback) {
-    var newImage = document.createElement('img') // Modern browsers (except Safari)
-
-    if (image.naturalWidth && !IS_SAFARI) {
-      callback(image.naturalWidth, image.naturalHeight)
-      return newImage
-    }
-
-    var body = document.body || document.documentElement
-
-    newImage.onload = function () {
-      callback(newImage.width, newImage.height)
-
-      if (!IS_SAFARI) {
-        body.removeChild(newImage)
-      }
-    }
-
-    forEach(options.inheritedAttributes, function (name) {
-      var value = image.getAttribute(name)
-
-      if (value !== null) {
-        newImage.setAttribute(name, value)
-      }
-    })
-    newImage.src = image.src // iOS Safari will convert the image automatically
-    // with its orientation once append it into DOM
-
-    if (!IS_SAFARI) {
-      newImage.style.cssText = 'left:0;' + 'max-height:none!important;' +
-        'max-width:none!important;' + 'min-height:0!important;' +
-        'min-width:0!important;' + 'opacity:0;' + 'position:absolute;' +
-        'top:0;' + 'z-index:-1;'
-      body.appendChild(newImage)
-    }
-
-    return newImage
-  }
-
-  /**
-   * Get the related class name of a responsive type number.
-   * @param {string} type - The responsive type.
-   * @returns {string} The related class name.
-   */
-
-  function getResponsiveClass (type) {
-    switch (type) {
-      case 2:
-        return CLASS_HIDE_XS_DOWN
-
-      case 3:
-        return CLASS_HIDE_SM_DOWN
-
-      case 4:
-        return CLASS_HIDE_MD_DOWN
-
-      default:
-        return ''
-    }
-  }
-
-  /**
-   * Get the max ratio of a group of pointers.
-   * @param {string} pointers - The target pointers.
-   * @returns {number} The result ratio.
-   */
-
-  function getMaxZoomRatio (pointers) {
-    var pointers2 = _objectSpread2({}, pointers)
-
-    var ratios = []
-    forEach(pointers, function (pointer, pointerId) {
-      delete pointers2[pointerId]
-      forEach(pointers2, function (pointer2) {
-        var x1 = Math.abs(pointer.startX - pointer2.startX)
-        var y1 = Math.abs(pointer.startY - pointer2.startY)
-        var x2 = Math.abs(pointer.endX - pointer2.endX)
-        var y2 = Math.abs(pointer.endY - pointer2.endY)
-        var z1 = Math.sqrt(x1 * x1 + y1 * y1)
-        var z2 = Math.sqrt(x2 * x2 + y2 * y2)
-        var ratio = (z2 - z1) / z1
-        ratios.push(ratio)
-      })
-    })
-    ratios.sort(function (a, b) {
-      return Math.abs(a) < Math.abs(b)
-    })
-    return ratios[0]
-  }
-
-  /**
-   * Get a pointer from an event object.
-   * @param {Object} event - The target event object.
-   * @param {boolean} endOnly - Indicates if only returns the end point coordinate or not.
-   * @returns {Object} The result pointer contains start and/or end point coordinates.
-   */
-
-  function getPointer (_ref2, endOnly) {
-    var pageX = _ref2.pageX, pageY = _ref2.pageY
-    var end = {
-      endX: pageX, endY: pageY,
-    }
-    return endOnly ? end : _objectSpread2({
-      timeStamp: Date.now(), startX: pageX, startY: pageY,
-    }, end)
-  }
-
-  /**
-   * Get the center point coordinate of a group of pointers.
-   * @param {Object} pointers - The target pointers.
-   * @returns {Object} The center point coordinate.
-   */
-
-  function getPointersCenter (pointers) {
-    var pageX = 0
-    var pageY = 0
-    var count = 0
-    forEach(pointers, function (_ref3) {
-      var startX = _ref3.startX, startY = _ref3.startY
-      pageX += startX
-      pageY += startY
-      count += 1
-    })
-    pageX /= count
-    pageY /= count
-    return {
-      pageX: pageX, pageY: pageY,
-    }
-  }
-
-  var render = {
-    render: function render () {
-      this.initContainer()
-      this.initViewer()
-      this.initList()
-      this.renderViewer()
-    }, initBody: function initBody () {
-      var ownerDocument = this.element.ownerDocument
-      var body = ownerDocument.body || ownerDocument.documentElement
-      this.body = body
-      this.scrollbarWidth = window.innerWidth -
-        ownerDocument.documentElement.clientWidth
-      this.initialBodyPaddingRight = body.style.paddingRight
-      this.initialBodyComputedPaddingRight = window.getComputedStyle(
-        body).paddingRight
-    }, initContainer: function initContainer () {
-      this.containerData = {
-        width: window.innerWidth, height: window.innerHeight,
-      }
-    }, initViewer: function initViewer () {
-      var options = this.options, parent = this.parent
-      var viewerData
-
-      if (options.inline) {
-        viewerData = {
-          width: Math.max(parent.offsetWidth, options.minWidth),
-          height: Math.max(parent.offsetHeight, options.minHeight),
-        }
-        this.parentData = viewerData
-      }
-
-      if (this.fulled || !viewerData) {
-        viewerData = this.containerData
-      }
-
-      this.viewerData = assign({}, viewerData)
-    }, renderViewer: function renderViewer () {
-      if (this.options.inline && !this.fulled) {
-        setStyle(this.viewer, this.viewerData)
-      }
-    }, initList: function initList () {
-      var _this = this
-
-      var element = this.element, options = this.options, list = this.list
-      var items = [] // initList may be called in this.update, so should keep idempotent
-
-      list.innerHTML = ''
-      forEach(this.images, function (image, index) {
-        var src = image.src
-        var alt = image.alt || getImageNameFromURL(src)
-
-        var url = _this.getImageURL(image)
-
-        if (src || url) {
-          var item = document.createElement('li')
-          var img = document.createElement('img')
-          forEach(options.inheritedAttributes, function (name) {
-            var value = image.getAttribute(name)
-
-            if (value !== null) {
-              img.setAttribute(name, value)
-            }
-          })
-          img.src = src || url
-          img.alt = alt
-          img.setAttribute('data-original-url', url || src)
-          item.setAttribute('data-index', index)
-          item.setAttribute('data-viewer-action', 'view')
-          item.setAttribute('role', 'button')
-
-          if (options.keyboard) {
-            item.setAttribute('tabindex', 0)
-          }
-
-          item.appendChild(img)
-          list.appendChild(item)
-          items.push(item)
-        }
-      })
-      this.items = items
-      forEach(items, function (item) {
-        var image = item.firstElementChild
-        var onLoad
-        var onError
-        setData(image, 'filled', true)
-
-        if (options.loading) {
-          addClass(item, CLASS_LOADING)
-        }
-
-        addListener(image, EVENT_LOAD, onLoad = function onLoad (event) {
-          removeListener(image, EVENT_ERROR, onError)
-
-          if (options.loading) {
-            removeClass(item, CLASS_LOADING)
-          }
-
-          _this.loadImage(event)
-        }, {
-          once: true,
-        })
-        addListener(image, EVENT_ERROR, onError = function onError () {
-          removeListener(image, EVENT_LOAD, onLoad)
-
-          if (options.loading) {
-            removeClass(item, CLASS_LOADING)
-          }
-        }, {
-          once: true,
-        })
-      })
-
-      if (options.transition) {
-        addListener(element, EVENT_VIEWED, function () {
-          addClass(list, CLASS_TRANSITION)
-        }, {
-          once: true,
-        })
-      }
-    }, renderList: function renderList () {
-      var index = this.index
-      var item = this.items[index]
-
-      if (!item) {
-        return
-      }
-
-      var next = item.nextElementSibling
-      var gutter = parseInt(window.getComputedStyle(next || item).marginLeft,
-        10)
-      var offsetWidth = item.offsetWidth
-      var outerWidth = offsetWidth + gutter // Place the active item in the center of the screen
-
-      setStyle(this.list, assign({
-        width: outerWidth * this.length - gutter,
-      }, getTransforms({
-        translateX: (this.viewerData.width - offsetWidth) / 2 - outerWidth *
-          index,
-      })))
-    }, resetList: function resetList () {
-      var list = this.list
-      list.innerHTML = ''
-      removeClass(list, CLASS_TRANSITION)
-      setStyle(list, getTransforms({
-        translateX: 0,
-      }))
-    }, initImage: function initImage (done) {
-      var _this2 = this
-
-      var options = this.options, image = this.image,
-        viewerData = this.viewerData
-      var footerHeight = this.footer.offsetHeight
-      var viewerWidth = viewerData.width
-      var viewerHeight = Math.max(viewerData.height - footerHeight,
-        footerHeight)
-      var oldImageData = this.imageData || {}
-      var sizingImage
-      this.imageInitializing = {
-        abort: function abort () {
-          sizingImage.onload = null
-        },
-      }
-      sizingImage = getImageNaturalSizes(image, options,
-        function (naturalWidth, naturalHeight) {
-          var aspectRatio = naturalWidth / naturalHeight
-          var width = viewerWidth
-          var height = viewerHeight
-          _this2.imageInitializing = false
-
-          if (viewerHeight * aspectRatio > viewerWidth) {
-            height = viewerWidth / aspectRatio
-          } else {
-            width = viewerHeight * aspectRatio
-          }
-
-          width = Math.min(width * 0.9, naturalWidth)
-          height = Math.min(height * 0.9, naturalHeight)
-          var left = (viewerWidth - width) / 2
-          var top = (viewerHeight - height) / 2
-          var imageData = {
-            left: left,
-            top: top,
-            x: left,
-            y: top,
-            width: width,
-            height: height,
-            oldRatio: 1,
-            ratio: width / naturalWidth,
-            aspectRatio: aspectRatio,
-            naturalWidth: naturalWidth,
-            naturalHeight: naturalHeight,
-          }
-          var initialImageData = assign({}, imageData)
-
-          if (options.rotatable) {
-            imageData.rotate = oldImageData.rotate || 0
-            initialImageData.rotate = 0
-          }
-
-          if (options.scalable) {
-            imageData.scaleX = oldImageData.scaleX || 1
-            imageData.scaleY = oldImageData.scaleY || 1
-            initialImageData.scaleX = 1
-            initialImageData.scaleY = 1
-          }
-
-          _this2.imageData = imageData
-          _this2.initialImageData = initialImageData
-
-          if (done) {
-            done()
-          }
-        })
-    }, renderImage: function renderImage (done) {
-      var _this3 = this
-
-      var image = this.image, imageData = this.imageData
-      setStyle(image, assign({
-        width: imageData.width,
-        height: imageData.height, // XXX: Not to use translateX/Y to avoid image shaking when zooming
-        marginLeft: imageData.x,
-        marginTop: imageData.y,
-      }, getTransforms(imageData)))
-
-      if (done) {
-        if ((this.viewing || this.moving || this.rotating || this.scaling ||
-            this.zooming) && this.options.transition &&
-          hasClass(image, CLASS_TRANSITION)) {
-          var onTransitionEnd = function onTransitionEnd () {
-            _this3.imageRendering = false
-            done()
-          }
-
-          this.imageRendering = {
-            abort: function abort () {
-              removeListener(image, EVENT_TRANSITION_END, onTransitionEnd)
-            },
-          }
-          addListener(image, EVENT_TRANSITION_END, onTransitionEnd, {
-            once: true,
-          })
-        } else {
-          done()
-        }
-      }
-    }, resetImage: function resetImage () {
-      // this.image only defined after viewed
-      if (this.viewing || this.viewed) {
-        var image = this.image
-
-        if (this.viewing) {
-          this.viewing.abort()
-        }
-
-        image.parentNode.removeChild(image)
-        this.image = null
-      }
-    },
-  }
-
-  var events = {
-    bind: function bind () {
-      var options = this.options, viewer = this.viewer, canvas = this.canvas
-      var document = this.element.ownerDocument
-      addListener(viewer, EVENT_CLICK, this.onClick = this.click.bind(this))
-      addListener(viewer, EVENT_DRAG_START,
-        this.onDragStart = this.dragstart.bind(this))
-      addListener(canvas, EVENT_POINTER_DOWN,
-        this.onPointerDown = this.pointerdown.bind(this))
-      addListener(document, EVENT_POINTER_MOVE,
-        this.onPointerMove = this.pointermove.bind(this))
-      addListener(document, EVENT_POINTER_UP,
-        this.onPointerUp = this.pointerup.bind(this))
-      addListener(document, EVENT_KEY_DOWN,
-        this.onKeyDown = this.keydown.bind(this))
-      addListener(window, EVENT_RESIZE, this.onResize = this.resize.bind(this))
-
-      if (options.zoomable && options.zoomOnWheel) {
-        addListener(viewer, EVENT_WHEEL, this.onWheel = this.wheel.bind(this), {
-          passive: false, capture: true,
-        })
-      }
-
-      if (options.toggleOnDblclick) {
-        addListener(canvas, EVENT_DBLCLICK,
-          this.onDblclick = this.dblclick.bind(this))
-      }
-    }, unbind: function unbind () {
-      var options = this.options, viewer = this.viewer, canvas = this.canvas
-      var document = this.element.ownerDocument
-      removeListener(viewer, EVENT_CLICK, this.onClick)
-      removeListener(viewer, EVENT_DRAG_START, this.onDragStart)
-      removeListener(canvas, EVENT_POINTER_DOWN, this.onPointerDown)
-      removeListener(document, EVENT_POINTER_MOVE, this.onPointerMove)
-      removeListener(document, EVENT_POINTER_UP, this.onPointerUp)
-      removeListener(document, EVENT_KEY_DOWN, this.onKeyDown)
-      removeListener(window, EVENT_RESIZE, this.onResize)
-
-      if (options.zoomable && options.zoomOnWheel) {
-        removeListener(viewer, EVENT_WHEEL, this.onWheel, {
-          passive: false, capture: true,
-        })
-      }
-
-      if (options.toggleOnDblclick) {
-        removeListener(canvas, EVENT_DBLCLICK, this.onDblclick)
-      }
-    },
-  }
-
-  var handlers = {
-    click: function click (event) {
-      var options = this.options, imageData = this.imageData
-      var target = event.target
-      var action = getData(target, DATA_ACTION)
-
-      // NOTE: updated by Vanessa
-      if (!action &&
-        (target.localName === 'svg' || target.localName === 'use')) {
-        target = target.localName === 'use'
-          ? target.parentElement.parentElement
-          : target.parentElement
-        action = getData(target, DATA_ACTION)
-      }
-
-      if (!action && target.localName === 'img' &&
-        target.parentElement.localName === 'li') {
-        target = target.parentElement
-        action = getData(target, DATA_ACTION)
-      } // Cancel the emulated click when the native click event was triggered.
-
-      if (IS_TOUCH_DEVICE && event.isTrusted && target === this.canvas) {
-        clearTimeout(this.clickCanvasTimeout)
-      }
-
-      switch (action) {
-        case 'mix':
-          if (this.played) {
-            this.stop()
-          } else if (options.inline) {
-            if (this.fulled) {
-              this.exit()
-            } else {
-              this.full()
-            }
-          } else {
-            this.hide()
-          }
-
-          break
-
-        case 'hide':
-          this.hide()
-          break
-
-        case 'view':
-          this.view(getData(target, 'index'))
-          break
-
-        case 'zoom-in':
-          this.zoom(0.1, true)
-          break
-
-        case 'zoom-out':
-          this.zoom(-0.1, true)
-          break
-
-        case 'one-to-one':
-          this.toggle()
-          break
-
-        case 'reset':
-          this.reset()
-          break
-
-        case 'prev':
-          this.prev(options.loop)
-          break
-
-        case 'play':
-          this.play(options.fullscreen)
-          break
-
-        case 'next':
-          this.next(options.loop)
-          break
-
-        case 'rotate-left':
-          this.rotate(-90)
-          break
-
-        case 'rotate-right':
-          this.rotate(90)
-          break
-
-        case 'flip-horizontal':
-          this.scaleX(-imageData.scaleX || -1)
-          break
-
-        case 'flip-vertical':
-          this.scaleY(-imageData.scaleY || -1)
-          break
-
-        default:
-          if (this.played) {
-            this.stop()
-          }
-
-      }
-    }, dblclick: function dblclick (event) {
-      event.preventDefault()
-
-      if (this.viewed && event.target === this.image) {
-        // Cancel the emulated double click when the native dblclick event was triggered.
-        if (IS_TOUCH_DEVICE && event.isTrusted) {
-          clearTimeout(this.doubleClickImageTimeout)
-        } // XXX: No pageX/Y properties in custom event, fallback to the original event.
-
-        this.toggle(
-          event.isTrusted ? event : event.detail && event.detail.originalEvent)
-      }
-    }, load: function load () {
-      var _this = this
-
-      if (this.timeout) {
-        clearTimeout(this.timeout)
-        this.timeout = false
-      }
-
-      var element = this.element, options = this.options, image = this.image,
-        index = this.index, viewerData = this.viewerData
-      removeClass(image, CLASS_INVISIBLE)
-
-      if (options.loading) {
-        removeClass(this.canvas, CLASS_LOADING)
-      }
-
-      image.style.cssText = 'height:0;' +
-        'margin-left:'.concat(viewerData.width / 2, 'px;') +
-        'margin-top:'.concat(viewerData.height / 2, 'px;') +
-        'max-width:none!important;' + 'position:relative;' + 'width:0;'
-      this.initImage(function () {
-        toggleClass(image, CLASS_MOVE, options.movable)
-        toggleClass(image, CLASS_TRANSITION, options.transition)
-
-        _this.renderImage(function () {
-          _this.viewed = true
-          _this.viewing = false
-
-          if (isFunction(options.viewed)) {
-            addListener(element, EVENT_VIEWED, options.viewed, {
-              once: true,
-            })
-          }
-
-          dispatchEvent(element, EVENT_VIEWED, {
-            originalImage: _this.images[index], index: index, image: image,
-          }, {
-            cancelable: false,
-          })
-        })
-      })
-    }, loadImage: function loadImage (event) {
-      var image = event.target
-      var parent = image.parentNode
-      var parentWidth = parent.offsetWidth || 30
-      var parentHeight = parent.offsetHeight || 50
-      var filled = !!getData(image, 'filled')
-      getImageNaturalSizes(image, this.options,
-        function (naturalWidth, naturalHeight) {
-          var aspectRatio = naturalWidth / naturalHeight
-          var width = parentWidth
-          var height = parentHeight
-
-          if (parentHeight * aspectRatio > parentWidth) {
-            if (filled) {
-              width = parentHeight * aspectRatio
-            } else {
-              height = parentWidth / aspectRatio
-            }
-          } else if (filled) {
-            height = parentWidth / aspectRatio
-          } else {
-            width = parentHeight * aspectRatio
-          }
-
-          setStyle(image, assign({
-            width: width, height: height,
-          }, getTransforms({
-            translateX: (parentWidth - width) / 2,
-            translateY: (parentHeight - height) / 2,
-          })))
-        })
-    }, keydown: function keydown (event) {
-      var options = this.options
-
-      if (!options.keyboard) {
-        return
-      }
-
-      var keyCode = event.keyCode || event.which || event.charCode
-
-      switch (keyCode) {
-        // Enter
-        case 13:
-          if (this.viewer.contains(event.target)) {
-            this.click(event)
-          }
-
-          break
-      }
-
-      if (!this.fulled) {
-        return
-      }
-
-      switch (keyCode) {
-        // Escape
-        case 27:
-          if (this.played) {
-            this.stop()
-          } else if (options.inline) {
-            if (this.fulled) {
-              this.exit()
-            }
-          } else {
-            this.hide()
-          }
-
-          break
-        // Space
-
-        case 32:
-          if (this.played) {
-            this.stop()
-          }
-
-          break
-        // ArrowLeft
-
-        case 37:
-          this.prev(options.loop)
-          break
-        // ArrowUp
-
-        case 38:
-          // Prevent scroll on Firefox
-          event.preventDefault() // Zoom in
-
-          this.zoom(options.zoomRatio, true)
-          break
-        // ArrowRight
-
-        case 39:
-          this.next(options.loop)
-          break
-        // ArrowDown
-
-        case 40:
-          // Prevent scroll on Firefox
-          event.preventDefault() // Zoom out
-
-          this.zoom(-options.zoomRatio, true)
-          break
-        // Ctrl + 0
-
-        case 48: // Fall through
-        // Ctrl + 1
-        // eslint-disable-next-line no-fallthrough
-
-        case 49:
-          if (event.ctrlKey) {
-            event.preventDefault()
-            this.toggle()
-          }
-
-          break
-      }
-    }, dragstart: function dragstart (event) {
-      if (event.target.localName === 'img') {
-        event.preventDefault()
-      }
-    }, pointerdown: function pointerdown (event) {
-      var options = this.options, pointers = this.pointers
-      var buttons = event.buttons, button = event.button
-
-      if (!this.viewed || this.showing || this.viewing || this.hiding // Handle mouse event and pointer event and ignore touch event
-        || (event.type === 'mousedown' || event.type === 'pointerdown' &&
-          event.pointerType === 'mouse') && ( // No primary button (Usually the left button)
-          isNumber(buttons) && buttons !== 1 || isNumber(button) && button !== 0 // Open context menu
-          || event.ctrlKey)) {
-        return
-      } // Prevent default behaviours as page zooming in touch devices.
-
-      event.preventDefault()
-
-      if (event.changedTouches) {
-        forEach(event.changedTouches, function (touch) {
-          pointers[touch.identifier] = getPointer(touch)
-        })
-      } else {
-        pointers[event.pointerId || 0] = getPointer(event)
-      }
-
-      var action = options.movable ? ACTION_MOVE : false
-
-      if (options.zoomOnTouch && options.zoomable &&
-        Object.keys(pointers).length > 1) {
-        action = ACTION_ZOOM
-      } else if (options.slideOnTouch &&
-        (event.pointerType === 'touch' || event.type === 'touchstart') &&
-        this.isSwitchable()) {
-        action = ACTION_SWITCH
-      }
-
-      if (options.transition &&
-        (action === ACTION_MOVE || action === ACTION_ZOOM)) {
-        removeClass(this.image, CLASS_TRANSITION)
-      }
-
-      this.action = action
-    }, pointermove: function pointermove (event) {
-      var pointers = this.pointers, action = this.action
-
-      if (!this.viewed || !action) {
-        return
-      }
-
-      event.preventDefault()
-
-      if (event.changedTouches) {
-        forEach(event.changedTouches, function (touch) {
-          assign(pointers[touch.identifier] || {}, getPointer(touch, true))
-        })
-      } else {
-        assign(pointers[event.pointerId || 0] || {}, getPointer(event, true))
-      }
-
-      this.change(event)
-    }, pointerup: function pointerup (event) {
-      var _this2 = this
-
-      var options = this.options, action = this.action, pointers = this.pointers
-      var pointer
-
-      if (event.changedTouches) {
-        forEach(event.changedTouches, function (touch) {
-          pointer = pointers[touch.identifier]
-          delete pointers[touch.identifier]
-        })
-      } else {
-        pointer = pointers[event.pointerId || 0]
-        delete pointers[event.pointerId || 0]
-      }
-
-      if (!action) {
-        return
-      }
-
-      event.preventDefault()
-
-      if (options.transition &&
-        (action === ACTION_MOVE || action === ACTION_ZOOM)) {
-        addClass(this.image, CLASS_TRANSITION)
-      }
-
-      this.action = false // Emulate click and double click in touch devices to support backdrop and image zooming (#210).
-
-      if (IS_TOUCH_DEVICE && action !== ACTION_ZOOM && pointer && Date.now() -
-        pointer.timeStamp < 500) {
-        clearTimeout(this.clickCanvasTimeout)
-        clearTimeout(this.doubleClickImageTimeout)
-
-        if (options.toggleOnDblclick && this.viewed && event.target ===
-          this.image) {
-          if (this.imageClicked) {
-            this.imageClicked = false // This timeout will be cleared later when a native dblclick event is triggering
-
-            this.doubleClickImageTimeout = setTimeout(function () {
-              dispatchEvent(_this2.image, EVENT_DBLCLICK, {
-                originalEvent: event,
-              })
-            }, 50)
-          } else {
-            this.imageClicked = true // The default timing of a double click in Windows is 500 ms
-
-            this.doubleClickImageTimeout = setTimeout(function () {
-              _this2.imageClicked = false
-            }, 500)
-          }
-        } else {
-          this.imageClicked = false
-
-          if (options.backdrop && options.backdrop !== 'static' &&
-            event.target === this.canvas) {
-            // This timeout will be cleared later when a native click event is triggering
-            this.clickCanvasTimeout = setTimeout(function () {
-              dispatchEvent(_this2.canvas, EVENT_CLICK, {
-                originalEvent: event,
-              })
-            }, 50)
-          }
-        }
-      }
-    }, resize: function resize () {
-      var _this3 = this
-
-      if (!this.isShown || this.hiding) {
-        return
-      }
-
-      if (this.fulled) {
-        this.close()
-        this.initBody()
-        this.open()
-      }
-
-      this.initContainer()
-      this.initViewer()
-      this.renderViewer()
-      this.renderList()
-
-      if (this.viewed) {
-        this.initImage(function () {
-          _this3.renderImage()
-        })
-      }
-
-      if (this.played) {
-        if (this.options.fullscreen && this.fulled &&
-          !(document.fullscreenElement || document.webkitFullscreenElement ||
-            document.mozFullScreenElement || document.msFullscreenElement)) {
-          this.stop()
-          return
-        }
-
-        forEach(this.player.getElementsByTagName('img'), function (image) {
-          addListener(image, EVENT_LOAD, _this3.loadImage.bind(_this3), {
-            once: true,
-          })
-          dispatchEvent(image, EVENT_LOAD)
-        })
-      }
-    }, wheel: function wheel (event) {
-      var _this4 = this
-
-      if (!this.viewed) {
-        return
-      }
-
-      event.preventDefault() // Limit wheel speed to prevent zoom too fast
-
-      if (this.wheeling) {
-        return
-      }
-
-      this.wheeling = true
-      setTimeout(function () {
-        _this4.wheeling = false
-      }, 50)
-      var ratio = Number(this.options.zoomRatio) || 0.1
-      var delta = 1
-
-      if (event.deltaY) {
-        delta = event.deltaY > 0 ? 1 : -1
-      } else if (event.wheelDelta) {
-        delta = -event.wheelDelta / 120
-      } else if (event.detail) {
-        delta = event.detail > 0 ? 1 : -1
-      }
-
-      this.zoom(-delta * ratio, true, event)
-    },
-  }
-
-  var methods = {
-    /** Show the viewer (only available in modal mode)
-     * @param {boolean} [immediate=false] - Indicates if show the viewer immediately or not.
-     * @returns {Viewer} this
-     */
-    show: function show () {
-      var immediate = arguments.length > 0 && arguments[0] !== undefined
-        ? arguments[0]
-        : false
-      var element = this.element, options = this.options
-
-      if (options.inline || this.showing || this.isShown || this.showing) {
-        return this
-      }
-
-      if (!this.ready) {
-        this.build()
-
-        if (this.ready) {
-          this.show(immediate)
-        }
-
-        return this
-      }
-
-      if (isFunction(options.show)) {
-        addListener(element, EVENT_SHOW, options.show, {
-          once: true,
-        })
-      }
-
-      if (dispatchEvent(element, EVENT_SHOW) === false || !this.ready) {
-        return this
-      }
-
-      if (this.hiding) {
-        this.transitioning.abort()
-      }
-
-      this.showing = true
-      this.open()
-      var viewer = this.viewer
-      removeClass(viewer, CLASS_HIDE)
-      viewer.setAttribute('role', 'dialog')
-      viewer.setAttribute('aria-labelledby', this.title.id)
-      viewer.setAttribute('aria-modal', true)
-      viewer.removeAttribute('aria-hidden')
-
-      if (options.transition && !immediate) {
-        var shown = this.shown.bind(this)
-        this.transitioning = {
-          abort: function abort () {
-            removeListener(viewer, EVENT_TRANSITION_END, shown)
-            removeClass(viewer, CLASS_IN)
-          },
-        }
-        addClass(viewer, CLASS_TRANSITION) // Force reflow to enable CSS3 transition
-
-        viewer.initialOffsetWidth = viewer.offsetWidth
-        addListener(viewer, EVENT_TRANSITION_END, shown, {
-          once: true,
-        })
-        addClass(viewer, CLASS_IN)
-      } else {
-        addClass(viewer, CLASS_IN)
-        this.shown()
-      }
-
-      return this
-    },
-
-    /**
-     * Hide the viewer (only available in modal mode)
-     * @param {boolean} [immediate=false] - Indicates if hide the viewer immediately or not.
-     * @returns {Viewer} this
-     */
-    hide: function hide () {
-      var _this = this
-
-      var immediate = arguments.length > 0 && arguments[0] !== undefined
-        ? arguments[0]
-        : false
-      var element = this.element, options = this.options
-
-      if (options.inline || this.hiding || !(this.isShown || this.showing)) {
-        return this
-      }
-
-      if (isFunction(options.hide)) {
-        addListener(element, EVENT_HIDE, options.hide, {
-          once: true,
-        })
-      }
-
-      if (dispatchEvent(element, EVENT_HIDE) === false) {
-        return this
-      }
-
-      if (this.showing) {
-        this.transitioning.abort()
-      }
-
-      this.hiding = true
-
-      if (this.played) {
-        this.stop()
-      } else if (this.viewing) {
-        this.viewing.abort()
-      }
-
-      var viewer = this.viewer, image = this.image
-
-      var hideImmediately = function hideImmediately () {
-        removeClass(viewer, CLASS_IN)
-
-        _this.hidden()
-      }
-
-      if (options.transition && !immediate) {
-        var onViewerTransitionEnd = function onViewerTransitionEnd (event) {
-          // Ignore all propagating `transitionend` events (#275).
-          if (event && event.target === viewer) {
-            removeListener(viewer, EVENT_TRANSITION_END, onViewerTransitionEnd)
-
-            _this.hidden()
-          }
-        }
-
-        var onImageTransitionEnd = function onImageTransitionEnd () {
-          // In case of show the viewer by `viewer.show(true)` previously (#407).
-          if (hasClass(viewer, CLASS_TRANSITION)) {
-            addListener(viewer, EVENT_TRANSITION_END, onViewerTransitionEnd)
-            removeClass(viewer, CLASS_IN)
-          } else {
-            hideImmediately()
-          }
-        }
-
-        this.transitioning = {
-          abort: function abort () {
-            if (_this.viewed && hasClass(image, CLASS_TRANSITION)) {
-              removeListener(image, EVENT_TRANSITION_END, onImageTransitionEnd)
-            } else if (hasClass(viewer, CLASS_TRANSITION)) {
-              removeListener(viewer, EVENT_TRANSITION_END,
-                onViewerTransitionEnd)
-            }
-          },
-        } // In case of hiding the viewer when holding on the image (#255),
-        // note that the `CLASS_TRANSITION` class will be removed on pointer down.
-
-        if (this.viewed && hasClass(image, CLASS_TRANSITION)) {
-          addListener(image, EVENT_TRANSITION_END, onImageTransitionEnd, {
-            once: true,
-          })
-          this.zoomTo(0, false, null, true)
-        } else {
-          onImageTransitionEnd()
-        }
-      } else {
-        hideImmediately()
-      }
-
-      return this
-    },
-
-    /**
-     * View one of the images with image's index
-     * @param {number} index - The index of the image to view.
-     * @returns {Viewer} this
-     */
-    view: function view () {
-      var _this2 = this
-
-      var index = arguments.length > 0 && arguments[0] !== undefined
-        ? arguments[0]
-        : this.options.initialViewIndex
-      index = Number(index) || 0
-
-      if (this.hiding || this.played || index < 0 || index >= this.length ||
-        this.viewed && index === this.index) {
-        return this
-      }
-
-      if (!this.isShown) {
-        this.index = index
-        return this.show()
-      }
-
-      if (this.viewing) {
-        this.viewing.abort()
-      }
-
-      var element = this.element, options = this.options, title = this.title,
-        canvas = this.canvas
-      var item = this.items[index]
-      var img = item.querySelector('img')
-      var url = getData(img, 'originalUrl')
-      var alt = img.getAttribute('alt')
-      var image = document.createElement('img')
-      forEach(options.inheritedAttributes, function (name) {
-        var value = img.getAttribute(name)
-
-        if (value !== null) {
-          image.setAttribute(name, value)
-        }
-      })
-      image.src = url
-      image.alt = alt
-
-      if (isFunction(options.view)) {
-        addListener(element, EVENT_VIEW, options.view, {
-          once: true,
-        })
-      }
-
-      if (dispatchEvent(element, EVENT_VIEW, {
-        originalImage: this.images[index], index: index, image: image,
-      }) === false || !this.isShown || this.hiding || this.played) {
-        return this
-      }
-
-      var activeItem = this.items[this.index]
-
-      if (activeItem) {
-        removeClass(activeItem, CLASS_ACTIVE)
-        activeItem.removeAttribute('aria-selected')
-      }
-
-      addClass(item, CLASS_ACTIVE)
-      item.setAttribute('aria-selected', true)
-
-      if (options.focus) {
-        item.focus()
-      }
-
-      this.image = image
-      this.viewed = false
-      this.index = index
-      this.imageData = {}
-      addClass(image, CLASS_INVISIBLE)
-
-      if (options.loading) {
-        addClass(canvas, CLASS_LOADING)
-      }
-
-      canvas.innerHTML = ''
-      canvas.appendChild(image) // Center current item
-
-      this.renderList() // Clear title
-
-      title.innerHTML = '' // Generate title after viewed
-
-      var onViewed = function onViewed () {
-        var imageData = _this2.imageData
-        var render = Array.isArray(options.title)
-          ? options.title[1]
-          : options.title
-        title.innerHTML = escapeHTMLEntities(isFunction(render)
-          ? render.call(_this2, image, imageData)
-          : ''.concat(alt, ' (').
-            concat(imageData.naturalWidth, ' \xD7 ').
-            concat(imageData.naturalHeight, ')'))
-      }
-
-      var onLoad
-      var onError
-      addListener(element, EVENT_VIEWED, onViewed, {
-        once: true,
-      })
-      this.viewing = {
-        abort: function abort () {
-          removeListener(element, EVENT_VIEWED, onViewed)
-
-          if (image.complete) {
-            if (_this2.imageRendering) {
-              _this2.imageRendering.abort()
-            } else if (_this2.imageInitializing) {
-              _this2.imageInitializing.abort()
-            }
-          } else {
-            // Cancel download to save bandwidth.
-            image.src = ''
-            removeListener(image, EVENT_LOAD, onLoad)
-
-            if (_this2.timeout) {
-              clearTimeout(_this2.timeout)
-            }
-          }
-        },
-      }
-
-      if (image.complete) {
-        this.load()
-      } else {
-        addListener(image, EVENT_LOAD, onLoad = function onLoad () {
-          removeListener(image, EVENT_ERROR, onError)
-
-          _this2.load()
-        }, {
-          once: true,
-        })
-        addListener(image, EVENT_ERROR, onError = function onError () {
-          removeListener(image, EVENT_LOAD, onLoad)
-
-          if (_this2.timeout) {
-            clearTimeout(_this2.timeout)
-            _this2.timeout = false
-          }
-
-          removeClass(image, CLASS_INVISIBLE)
-
-          if (options.loading) {
-            removeClass(_this2.canvas, CLASS_LOADING)
-          }
-        }, {
-          once: true,
-        })
-
-        if (this.timeout) {
-          clearTimeout(this.timeout)
-        } // Make the image visible if it fails to load within 1s
-
-        this.timeout = setTimeout(function () {
-          removeClass(image, CLASS_INVISIBLE)
-          _this2.timeout = false
-        }, 1000)
-      }
-
-      return this
-    },
-
-    /**
-     * View the previous image
-     * @param {boolean} [loop=false] - Indicate if view the last one
-     * when it is the first one at present.
-     * @returns {Viewer} this
-     */
-    prev: function prev () {
-      var loop = arguments.length > 0 && arguments[0] !== undefined
-        ? arguments[0]
-        : false
-      var index = this.index - 1
-
-      if (index < 0) {
-        index = loop ? this.length - 1 : 0
-      }
-
-      this.view(index)
-      return this
-    },
-
-    /**
-     * View the next image
-     * @param {boolean} [loop=false] - Indicate if view the first one
-     * when it is the last one at present.
-     * @returns {Viewer} this
-     */
-    next: function next () {
-      var loop = arguments.length > 0 && arguments[0] !== undefined
-        ? arguments[0]
-        : false
-      var maxIndex = this.length - 1
-      var index = this.index + 1
-
-      if (index > maxIndex) {
-        index = loop ? 0 : maxIndex
-      }
-
-      this.view(index)
-      return this
-    },
-
-    /**
-     * Move the image with relative offsets.
-     * @param {number} x - The moving distance in the horizontal direction.
-     * @param {number} [y=x] The moving distance in the vertical direction.
-     * @returns {Viewer} this
-     */
-    move: function move (x) {
-      var y = arguments.length > 1 && arguments[1] !== undefined
-        ? arguments[1]
-        : x
-      var imageData = this.imageData
-      this.moveTo(isUndefined(x) ? x : imageData.x + Number(x),
-        isUndefined(y) ? y : imageData.y + Number(y))
-      return this
-    },
-
-    /**
-     * Move the image to an absolute point.
-     * @param {number} x - The new position in the horizontal direction.
-     * @param {number} [y=x] - The new position in the vertical direction.
-     * @param {Event} [_originalEvent=null] - The original event if any.
-     * @returns {Viewer} this
-     */
-    moveTo: function moveTo (x) {
-      var _this3 = this
-
-      var y = arguments.length > 1 && arguments[1] !== undefined
-        ? arguments[1]
-        : x
-
-      var _originalEvent = arguments.length > 2 && arguments[2] !== undefined
-        ? arguments[2]
-        : null
-
-      var element = this.element, options = this.options,
-        imageData = this.imageData
-      x = Number(x)
-      y = Number(y)
-
-      if (this.viewed && !this.played && options.movable) {
-        var oldX = imageData.x
-        var oldY = imageData.y
-        var changed = false
-
-        if (isNumber(x)) {
-          changed = true
-        } else {
-          x = oldX
-        }
-
-        if (isNumber(y)) {
-          changed = true
-        } else {
-          y = oldY
-        }
-
-        if (changed) {
-          if (isFunction(options.move)) {
-            addListener(element, EVENT_MOVE, options.move, {
-              once: true,
-            })
-          }
-
-          if (dispatchEvent(element, EVENT_MOVE, {
-            x: x, y: y, oldX: oldX, oldY: oldY, originalEvent: _originalEvent,
-          }) === false) {
-            return this
-          }
-
-          imageData.x = x
-          imageData.y = y
-          imageData.left = x
-          imageData.top = y
-          this.moving = true
-          this.renderImage(function () {
-            _this3.moving = false
-
-            if (isFunction(options.moved)) {
-              addListener(element, EVENT_MOVED, options.moved, {
-                once: true,
-              })
-            }
-
-            dispatchEvent(element, EVENT_MOVED, {
-              x: x, y: y, oldX: oldX, oldY: oldY, originalEvent: _originalEvent,
-            }, {
-              cancelable: false,
-            })
-          })
-        }
-      }
-
-      return this
-    },
-
-    /**
-     * Rotate the image with a relative degree.
-     * @param {number} degree - The rotate degree.
-     * @returns {Viewer} this
-     */
-    rotate: function rotate (degree) {
-      this.rotateTo((this.imageData.rotate || 0) + Number(degree))
-      return this
-    },
-
-    /**
-     * Rotate the image to an absolute degree.
-     * @param {number} degree - The rotate degree.
-     * @returns {Viewer} this
-     */
-    rotateTo: function rotateTo (degree) {
-      var _this4 = this
-
-      var element = this.element, options = this.options,
-        imageData = this.imageData
-      degree = Number(degree)
-
-      if (isNumber(degree) && this.viewed && !this.played &&
-        options.rotatable) {
-        var oldDegree = imageData.rotate
-
-        if (isFunction(options.rotate)) {
-          addListener(element, EVENT_ROTATE, options.rotate, {
-            once: true,
-          })
-        }
-
-        if (dispatchEvent(element, EVENT_ROTATE, {
-          degree: degree, oldDegree: oldDegree,
-        }) === false) {
-          return this
-        }
-
-        imageData.rotate = degree
-        this.rotating = true
-        this.renderImage(function () {
-          _this4.rotating = false
-
-          if (isFunction(options.rotated)) {
-            addListener(element, EVENT_ROTATED, options.rotated, {
-              once: true,
-            })
-          }
-
-          dispatchEvent(element, EVENT_ROTATED, {
-            degree: degree, oldDegree: oldDegree,
-          }, {
-            cancelable: false,
-          })
-        })
-      }
-
-      return this
-    },
-
-    /**
-     * Scale the image on the x-axis.
-     * @param {number} scaleX - The scale ratio on the x-axis.
-     * @returns {Viewer} this
-     */
-    scaleX: function scaleX (_scaleX) {
-      this.scale(_scaleX, this.imageData.scaleY)
-      return this
-    },
-
-    /**
-     * Scale the image on the y-axis.
-     * @param {number} scaleY - The scale ratio on the y-axis.
-     * @returns {Viewer} this
-     */
-    scaleY: function scaleY (_scaleY) {
-      this.scale(this.imageData.scaleX, _scaleY)
-      return this
-    },
-
-    /**
-     * Scale the image.
-     * @param {number} scaleX - The scale ratio on the x-axis.
-     * @param {number} [scaleY=scaleX] - The scale ratio on the y-axis.
-     * @returns {Viewer} this
-     */
-    scale: function scale (scaleX) {
-      var _this5 = this
-
-      var scaleY = arguments.length > 1 && arguments[1] !== undefined
-        ? arguments[1]
-        : scaleX
-      var element = this.element, options = this.options,
-        imageData = this.imageData
-      scaleX = Number(scaleX)
-      scaleY = Number(scaleY)
-
-      if (this.viewed && !this.played && options.scalable) {
-        var oldScaleX = imageData.scaleX
-        var oldScaleY = imageData.scaleY
-        var changed = false
-
-        if (isNumber(scaleX)) {
-          changed = true
-        } else {
-          scaleX = oldScaleX
-        }
-
-        if (isNumber(scaleY)) {
-          changed = true
-        } else {
-          scaleY = oldScaleY
-        }
-
-        if (changed) {
-          if (isFunction(options.scale)) {
-            addListener(element, EVENT_SCALE, options.scale, {
-              once: true,
-            })
-          }
-
-          if (dispatchEvent(element, EVENT_SCALE, {
-            scaleX: scaleX,
-            scaleY: scaleY,
-            oldScaleX: oldScaleX,
-            oldScaleY: oldScaleY,
-          }) === false) {
-            return this
-          }
-
-          imageData.scaleX = scaleX
-          imageData.scaleY = scaleY
-          this.scaling = true
-          this.renderImage(function () {
-            _this5.scaling = false
-
-            if (isFunction(options.scaled)) {
-              addListener(element, EVENT_SCALED, options.scaled, {
-                once: true,
-              })
-            }
-
-            dispatchEvent(element, EVENT_SCALED, {
-              scaleX: scaleX,
-              scaleY: scaleY,
-              oldScaleX: oldScaleX,
-              oldScaleY: oldScaleY,
-            }, {
-              cancelable: false,
-            })
-          })
-        }
-      }
-
-      return this
-    },
-
-    /**
-     * Zoom the image with a relative ratio.
-     * @param {number} ratio - The target ratio.
-     * @param {boolean} [hasTooltip=false] - Indicates if it has a tooltip or not.
-     * @param {Event} [_originalEvent=null] - The original event if any.
-     * @returns {Viewer} this
-     */
-    zoom: function zoom (ratio) {
-      var hasTooltip = arguments.length > 1 && arguments[1] !== undefined
-        ? arguments[1]
-        : false
-
-      var _originalEvent = arguments.length > 2 && arguments[2] !== undefined
-        ? arguments[2]
-        : null
-
-      var imageData = this.imageData
-      ratio = Number(ratio)
-
-      if (ratio < 0) {
-        ratio = 1 / (1 - ratio)
-      } else {
-        ratio = 1 + ratio
-      }
-
-      this.zoomTo(imageData.width * ratio / imageData.naturalWidth, hasTooltip,
-        _originalEvent)
-      return this
-    },
-
-    /**
-     * Zoom the image to an absolute ratio.
-     * @param {number} ratio - The target ratio.
-     * @param {boolean} [hasTooltip=false] - Indicates if it has a tooltip or not.
-     * @param {Event} [_originalEvent=null] - The original event if any.
-     * @param {Event} [_zoomable=false] - Indicates if the current zoom is available or not.
-     * @returns {Viewer} this
-     */
-    zoomTo: function zoomTo (ratio) {
-      var _this6 = this
-
-      var hasTooltip = arguments.length > 1 && arguments[1] !== undefined
-        ? arguments[1]
-        : false
-
-      var _originalEvent = arguments.length > 2 && arguments[2] !== undefined
-        ? arguments[2]
-        : null
-
-      var _zoomable = arguments.length > 3 && arguments[3] !== undefined
-        ? arguments[3]
-        : false
-
-      var element = this.element, options = this.options,
-        pointers = this.pointers, imageData = this.imageData
-      var x = imageData.x, y = imageData.y, width = imageData.width,
-        height = imageData.height, naturalWidth = imageData.naturalWidth,
-        naturalHeight = imageData.naturalHeight
-      ratio = Math.max(0, ratio)
-
-      if (isNumber(ratio) && this.viewed && !this.played &&
-        (_zoomable || options.zoomable)) {
-        if (!_zoomable) {
-          var minZoomRatio = Math.max(0.01, options.minZoomRatio)
-          var maxZoomRatio = Math.min(100, options.maxZoomRatio)
-          ratio = Math.min(Math.max(ratio, minZoomRatio), maxZoomRatio)
-        }
-
-        if (_originalEvent) {
-          switch (_originalEvent.type) {
-            case 'wheel':
-              if (options.zoomRatio >= 0.055 && ratio > 0.95 && ratio < 1.05) {
-                ratio = 1
-              }
-
-              break
-
-            case 'pointermove':
-            case 'touchmove':
-            case 'mousemove':
-              if (ratio > 0.99 && ratio < 1.01) {
-                ratio = 1
-              }
-
-              break
-          }
-        }
-
-        var newWidth = naturalWidth * ratio
-        var newHeight = naturalHeight * ratio
-        var offsetWidth = newWidth - width
-        var offsetHeight = newHeight - height
-        var oldRatio = imageData.ratio
-
-        if (isFunction(options.zoom)) {
-          addListener(element, EVENT_ZOOM, options.zoom, {
-            once: true,
-          })
-        }
-
-        if (dispatchEvent(element, EVENT_ZOOM, {
-          ratio: ratio, oldRatio: oldRatio, originalEvent: _originalEvent,
-        }) === false) {
-          return this
-        }
-
-        this.zooming = true
-
-        if (_originalEvent) {
-          var offset = getOffset(this.viewer)
-          var center = pointers && Object.keys(pointers).length > 0
-            ? getPointersCenter(pointers)
-            : {
-              pageX: _originalEvent.pageX, pageY: _originalEvent.pageY,
-            } // Zoom from the triggering point of the event
-
-          imageData.x -= offsetWidth *
-            ((center.pageX - offset.left - x) / width)
-          imageData.y -= offsetHeight *
-            ((center.pageY - offset.top - y) / height)
-        } else {
-          // Zoom from the center of the image
-          imageData.x -= offsetWidth / 2
-          imageData.y -= offsetHeight / 2
-        }
-
-        imageData.left = imageData.x
-        imageData.top = imageData.y
-        imageData.width = newWidth
-        imageData.height = newHeight
-        imageData.oldRatio = oldRatio
-        imageData.ratio = ratio
-        this.renderImage(function () {
-          _this6.zooming = false
-
-          if (isFunction(options.zoomed)) {
-            addListener(element, EVENT_ZOOMED, options.zoomed, {
-              once: true,
-            })
-          }
-
-          dispatchEvent(element, EVENT_ZOOMED, {
-            ratio: ratio, oldRatio: oldRatio, originalEvent: _originalEvent,
-          }, {
-            cancelable: false,
-          })
-        })
-
-        if (hasTooltip) {
-          this.tooltip()
-        }
-      }
-
-      return this
-    },
-
-    /**
-     * Play the images
-     * @param {boolean|FullscreenOptions} [fullscreen=false] - Indicate if request fullscreen or not.
-     * @returns {Viewer} this
-     */
-    play: function play () {
-      var _this7 = this
-
-      var fullscreen = arguments.length > 0 && arguments[0] !== undefined
-        ? arguments[0]
-        : false
-
-      if (!this.isShown || this.played) {
-        return this
-      }
-
-      var element = this.element, options = this.options
-
-      if (isFunction(options.play)) {
-        addListener(element, EVENT_PLAY, options.play, {
-          once: true,
-        })
-      }
-
-      if (dispatchEvent(element, EVENT_PLAY) === false) {
-        return this
-      }
-
-      var player = this.player
-      var onLoad = this.loadImage.bind(this)
-      var list = []
-      var total = 0
-      var index = 0
-      this.played = true
-      this.onLoadWhenPlay = onLoad
-
-      if (fullscreen) {
-        this.requestFullscreen(fullscreen)
-      }
-
-      addClass(player, CLASS_SHOW)
-      forEach(this.items, function (item, i) {
-        var img = item.querySelector('img')
-        var image = document.createElement('img')
-        image.src = getData(img, 'originalUrl')
-        image.alt = img.getAttribute('alt')
-        image.referrerPolicy = img.referrerPolicy
-        total += 1
-        addClass(image, CLASS_FADE)
-        toggleClass(image, CLASS_TRANSITION, options.transition)
-
-        if (hasClass(item, CLASS_ACTIVE)) {
-          addClass(image, CLASS_IN)
-          index = i
-        }
-
-        list.push(image)
-        addListener(image, EVENT_LOAD, onLoad, {
-          once: true,
-        })
-        player.appendChild(image)
-      })
-
-      if (isNumber(options.interval) && options.interval > 0) {
-        var play = function play () {
-          _this7.playing = setTimeout(function () {
-            removeClass(list[index], CLASS_IN)
-            index += 1
-            index = index < total ? index : 0
-            addClass(list[index], CLASS_IN)
-            play()
-          }, options.interval)
-        }
-
-        if (total > 1) {
-          play()
-        }
-      }
-
-      return this
-    }, // Stop play
-    stop: function stop () {
-      var _this8 = this
-
-      if (!this.played) {
-        return this
-      }
-
-      var element = this.element, options = this.options
-
-      if (isFunction(options.stop)) {
-        addListener(element, EVENT_STOP, options.stop, {
-          once: true,
-        })
-      }
-
-      if (dispatchEvent(element, EVENT_STOP) === false) {
-        return this
-      }
-
-      var player = this.player
-      this.played = false
-      clearTimeout(this.playing)
-      forEach(player.getElementsByTagName('img'), function (image) {
-        removeListener(image, EVENT_LOAD, _this8.onLoadWhenPlay)
-      })
-      removeClass(player, CLASS_SHOW)
-      player.innerHTML = ''
-      this.exitFullscreen()
-      return this
-    }, // Enter modal mode (only available in inline mode)
-    full: function full () {
-      var _this9 = this
-
-      var options = this.options, viewer = this.viewer, image = this.image,
-        list = this.list
-
-      if (!this.isShown || this.played || this.fulled || !options.inline) {
-        return this
-      }
-
-      this.fulled = true
-      this.open()
-      addClass(this.button, CLASS_FULLSCREEN_EXIT)
-
-      if (options.transition) {
-        removeClass(list, CLASS_TRANSITION)
-
-        if (this.viewed) {
-          removeClass(image, CLASS_TRANSITION)
-        }
-      }
-
-      addClass(viewer, CLASS_FIXED)
-      viewer.setAttribute('role', 'dialog')
-      viewer.setAttribute('aria-labelledby', this.title.id)
-      viewer.setAttribute('aria-modal', true)
-      viewer.removeAttribute('style')
-      setStyle(viewer, {
-        zIndex: options.zIndex,
-      })
-
-      if (options.focus) {
-        this.enforceFocus()
-      }
-
-      this.initContainer()
-      this.viewerData = assign({}, this.containerData)
-      this.renderList()
-
-      if (this.viewed) {
-        this.initImage(function () {
-          _this9.renderImage(function () {
-            if (options.transition) {
-              setTimeout(function () {
-                addClass(image, CLASS_TRANSITION)
-                addClass(list, CLASS_TRANSITION)
-              }, 0)
-            }
-          })
-        })
-      }
-
-      return this
-    }, // Exit modal mode (only available in inline mode)
-    exit: function exit () {
-      var _this10 = this
-
-      var options = this.options, viewer = this.viewer, image = this.image,
-        list = this.list
-
-      if (!this.isShown || this.played || !this.fulled || !options.inline) {
-        return this
-      }
-
-      this.fulled = false
-      this.close()
-      removeClass(this.button, CLASS_FULLSCREEN_EXIT)
-
-      if (options.transition) {
-        removeClass(list, CLASS_TRANSITION)
-
-        if (this.viewed) {
-          removeClass(image, CLASS_TRANSITION)
-        }
-      }
-
-      if (options.focus) {
-        this.clearEnforceFocus()
-      }
-
-      viewer.removeAttribute('role')
-      viewer.removeAttribute('aria-labelledby')
-      viewer.removeAttribute('aria-modal')
-      removeClass(viewer, CLASS_FIXED)
-      setStyle(viewer, {
-        zIndex: options.zIndexInline,
-      })
-      this.viewerData = assign({}, this.parentData)
-      this.renderViewer()
-      this.renderList()
-
-      if (this.viewed) {
-        this.initImage(function () {
-          _this10.renderImage(function () {
-            if (options.transition) {
-              setTimeout(function () {
-                addClass(image, CLASS_TRANSITION)
-                addClass(list, CLASS_TRANSITION)
-              }, 0)
-            }
-          })
-        })
-      }
-
-      return this
-    }, // Show the current ratio of the image with percentage
-    tooltip: function tooltip () {
-      var _this11 = this
-
-      var options = this.options, tooltipBox = this.tooltipBox,
-        imageData = this.imageData
-
-      if (!this.viewed || this.played || !options.tooltip) {
-        return this
-      }
-
-      tooltipBox.textContent = ''.concat(Math.round(imageData.ratio * 100), '%')
-
-      if (!this.tooltipping) {
-        if (options.transition) {
-          if (this.fading) {
-            dispatchEvent(tooltipBox, EVENT_TRANSITION_END)
-          }
-
-          addClass(tooltipBox, CLASS_SHOW)
-          addClass(tooltipBox, CLASS_FADE)
-          addClass(tooltipBox, CLASS_TRANSITION)
-          tooltipBox.removeAttribute('aria-hidden') // Force reflow to enable CSS3 transition
-
-          tooltipBox.initialOffsetWidth = tooltipBox.offsetWidth
-          addClass(tooltipBox, CLASS_IN)
-        } else {
-          addClass(tooltipBox, CLASS_SHOW)
-          tooltipBox.removeAttribute('aria-hidden')
-        }
-      } else {
-        clearTimeout(this.tooltipping)
-      }
-
-      this.tooltipping = setTimeout(function () {
-        if (options.transition) {
-          addListener(tooltipBox, EVENT_TRANSITION_END, function () {
-            removeClass(tooltipBox, CLASS_SHOW)
-            removeClass(tooltipBox, CLASS_FADE)
-            removeClass(tooltipBox, CLASS_TRANSITION)
-            tooltipBox.setAttribute('aria-hidden', true)
-            _this11.fading = false
-          }, {
-            once: true,
-          })
-          removeClass(tooltipBox, CLASS_IN)
-          _this11.fading = true
-        } else {
-          removeClass(tooltipBox, CLASS_SHOW)
-          tooltipBox.setAttribute('aria-hidden', true)
-        }
-
-        _this11.tooltipping = false
-      }, 1000)
-      return this
-    },
-
-    /**
-     * Toggle the image size between its current size and natural size
-     * @param {Event} [_originalEvent=null] - The original event if any.
-     * @returns {Viewer} this
-     */
-    toggle: function toggle () {
-      var _originalEvent = arguments.length > 0 && arguments[0] !== undefined
-        ? arguments[0]
-        : null
-
-      if (this.imageData.ratio === 1) {
-        this.zoomTo(this.imageData.oldRatio, true, _originalEvent)
-      } else {
-        this.zoomTo(1, true, _originalEvent)
-      }
-
-      return this
-    }, // Reset the image to its initial state
-    reset: function reset () {
-      if (this.viewed && !this.played) {
-        this.imageData = assign({}, this.initialImageData)
-        this.renderImage()
-      }
-
-      return this
-    }, // Update viewer when images changed
-    update: function update () {
-      var _this12 = this
-
-      var element = this.element, options = this.options, isImg = this.isImg // Destroy viewer if the target image was deleted
-
-      if (isImg && !element.parentNode) {
-        return this.destroy()
-      }
-
-      var images = []
-      forEach(isImg ? [element] : element.querySelectorAll('img'),
-        function (image) {
-          if (isFunction(options.filter)) {
-            if (options.filter.call(_this12, image)) {
-              images.push(image)
-            }
-          } else if (_this12.getImageURL(image)) {
-            images.push(image)
-          }
-        })
-
-      if (!images.length) {
-        return this
-      }
-
-      this.images = images
-      this.length = images.length
-
-      if (this.ready) {
-        var changedIndexes = []
-        forEach(this.items, function (item, i) {
-          var img = item.querySelector('img')
-          var image = images[i]
-
-          if (image && img) {
-            if (image.src !== img.src // Title changed (#408)
-              || image.alt !== img.alt) {
-              changedIndexes.push(i)
-            }
-          } else {
-            changedIndexes.push(i)
-          }
-        })
-        setStyle(this.list, {
-          width: 'auto',
-        })
-        this.initList()
-
-        if (this.isShown) {
-          if (this.length) {
-            if (this.viewed) {
-              var changedIndex = changedIndexes.indexOf(this.index)
-
-              if (changedIndex >= 0) {
-                this.viewed = false
-                this.view(
-                  Math.max(Math.min(this.index - changedIndex, this.length - 1),
-                    0))
-              } else {
-                var activeItem = this.items[this.index] // Reactivate the current viewing item after reset the list.
-
-                addClass(activeItem, CLASS_ACTIVE)
-                activeItem.setAttribute('aria-selected', true)
-              }
-            }
-          } else {
-            this.image = null
-            this.viewed = false
-            this.index = 0
-            this.imageData = {}
-            this.canvas.innerHTML = ''
-            this.title.innerHTML = ''
-          }
-        }
-      } else {
-        this.build()
-      }
-
-      return this
-    }, // Destroy the viewer
-    destroy: function destroy () {
-      var element = this.element, options = this.options
-
-      if (!element[NAMESPACE]) {
-        return this
-      }
-
-      this.destroyed = true
-
-      if (this.ready) {
-        if (this.played) {
-          this.stop()
-        }
-
-        if (options.inline) {
-          if (this.fulled) {
-            this.exit()
-          }
-
-          this.unbind()
-        } else if (this.isShown) {
-          if (this.viewing) {
-            if (this.imageRendering) {
-              this.imageRendering.abort()
-            } else if (this.imageInitializing) {
-              this.imageInitializing.abort()
-            }
-          }
-
-          if (this.hiding) {
-            this.transitioning.abort()
-          }
-
-          this.hidden()
-        } else if (this.showing) {
-          this.transitioning.abort()
-          this.hidden()
-        }
-
-        this.ready = false
-        this.viewer.parentNode.removeChild(this.viewer)
-      } else if (options.inline) {
-        if (this.delaying) {
-          this.delaying.abort()
-        } else if (this.initializing) {
-          this.initializing.abort()
-        }
-      }
-
-      if (!options.inline) {
-        removeListener(element, EVENT_CLICK, this.onStart)
-      }
-
-      element[NAMESPACE] = undefined
-      return this
-    },
-  }
-
-  var others = {
-    getImageURL: function getImageURL (image) {
-      var url = this.options.url
-
-      if (isString(url)) {
-        url = image.getAttribute(url)
-      } else if (isFunction(url)) {
-        url = url.call(this, image)
-      } else {
-        url = ''
-      }
-
-      return url
-    }, enforceFocus: function enforceFocus () {
-      var _this = this
-
-      this.clearEnforceFocus()
-      addListener(document, EVENT_FOCUSIN, this.onFocusin = function (event) {
-        var viewer = _this.viewer
-        var target = event.target
-
-        if (target !== document && target !== viewer && !viewer.contains(target) // Avoid conflicts with other modals (#474)
-          && (target.getAttribute('tabindex') === null ||
-            target.getAttribute('aria-modal') !== 'true')) {
-          viewer.focus()
-        }
-      })
-    }, clearEnforceFocus: function clearEnforceFocus () {
-      if (this.onFocusin) {
-        removeListener(document, EVENT_FOCUSIN, this.onFocusin)
-        this.onFocusin = null
-      }
-    }, open: function open () {
-      var body = this.body
-      addClass(body, CLASS_OPEN)
-      body.style.paddingRight = ''.concat(this.scrollbarWidth +
-        (parseFloat(this.initialBodyComputedPaddingRight) || 0), 'px')
-    }, close: function close () {
-      var body = this.body
-      removeClass(body, CLASS_OPEN)
-      body.style.paddingRight = this.initialBodyPaddingRight
-    }, shown: function shown () {
-      var element = this.element, options = this.options, viewer = this.viewer
-      this.fulled = true
-      this.isShown = true
-      this.render()
-      this.bind()
-      this.showing = false
-
-      if (options.focus) {
-        viewer.focus()
-        this.enforceFocus()
-      }
-
-      if (isFunction(options.shown)) {
-        addListener(element, EVENT_SHOWN, options.shown, {
-          once: true,
-        })
-      }
-
-      if (dispatchEvent(element, EVENT_SHOWN) === false) {
-        return
-      }
-
-      if (this.ready && this.isShown && !this.hiding) {
-        this.view(this.index)
-      }
-    }, hidden: function hidden () {
-      var element = this.element, options = this.options, viewer = this.viewer
-
-      if (options.fucus) {
-        this.clearEnforceFocus()
-      }
-
-      this.fulled = false
-      this.viewed = false
-      this.isShown = false
-      this.close()
-      this.unbind()
-      addClass(viewer, CLASS_HIDE)
-      viewer.removeAttribute('role')
-      viewer.removeAttribute('aria-labelledby')
-      viewer.removeAttribute('aria-modal')
-      viewer.setAttribute('aria-hidden', true)
-      this.resetList()
-      this.resetImage()
-      this.hiding = false
-
-      if (!this.destroyed) {
-        if (isFunction(options.hidden)) {
-          addListener(element, EVENT_HIDDEN, options.hidden, {
-            once: true,
-          })
-        }
-
-        dispatchEvent(element, EVENT_HIDDEN, null, {
-          cancelable: false,
-        })
-      }
-    }, requestFullscreen: function requestFullscreen (options) {
-      var document = this.element.ownerDocument
-
-      if (this.fulled &&
-        !(document.fullscreenElement || document.webkitFullscreenElement ||
-          document.mozFullScreenElement || document.msFullscreenElement)) {
-        var documentElement = document.documentElement // Element.requestFullscreen()
-
-        if (documentElement.requestFullscreen) {
-          // Avoid TypeError when convert `options` to dictionary
-          if (isPlainObject(options)) {
-            documentElement.requestFullscreen(options)
-          } else {
-            documentElement.requestFullscreen()
-          }
-        } else if (documentElement.webkitRequestFullscreen) {
-          documentElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT)
-        } else if (documentElement.mozRequestFullScreen) {
-          documentElement.mozRequestFullScreen()
-        } else if (documentElement.msRequestFullscreen) {
-          documentElement.msRequestFullscreen()
-        }
-      }
-    }, exitFullscreen: function exitFullscreen () {
-      var document = this.element.ownerDocument
-
-      if (this.fulled &&
-        (document.fullscreenElement || document.webkitFullscreenElement ||
-          document.mozFullScreenElement || document.msFullscreenElement)) {
-        // Document.exitFullscreen()
-        if (document.exitFullscreen) {
-          document.exitFullscreen()
-        } else if (document.webkitExitFullscreen) {
-          document.webkitExitFullscreen()
-        } else if (document.mozCancelFullScreen) {
-          document.mozCancelFullScreen()
-        } else if (document.msExitFullscreen) {
-          document.msExitFullscreen()
-        }
-      }
-    }, change: function change (event) {
-      var options = this.options, pointers = this.pointers
-      var pointer = pointers[Object.keys(pointers)[0]] // In the case of the `pointers` object is empty (#421)
-
-      if (!pointer) {
-        return
-      }
-
-      var offsetX = pointer.endX - pointer.startX
-      var offsetY = pointer.endY - pointer.startY
-
-      switch (this.action) {
-        // Move the current image
-        case ACTION_MOVE:
-          this.move(offsetX, offsetY, event)
-          break
-        // Zoom the current image
-
-        case ACTION_ZOOM:
-          this.zoom(getMaxZoomRatio(pointers), false, event)
-          break
-
-        case ACTION_SWITCH: {
-          this.action = 'switched'
-          var absoluteOffsetX = Math.abs(offsetX)
-
-          if (absoluteOffsetX > 1 && absoluteOffsetX > Math.abs(offsetY)) {
-            // Empty `pointers` as `touchend` event will not be fired after swiped in iOS browsers.
-            this.pointers = {}
-
-            if (offsetX > 1) {
-              this.prev(options.loop)
-            } else if (offsetX < -1) {
-              this.next(options.loop)
-            }
-          }
-
-          break
-        }
-      } // Override
-
-      forEach(pointers, function (p) {
-        p.startX = p.endX
-        p.startY = p.endY
-      })
-    }, isSwitchable: function isSwitchable () {
-      var imageData = this.imageData, viewerData = this.viewerData
-      return this.length > 1 && imageData.x >= 0 && imageData.y >= 0 &&
-        imageData.width <= viewerData.width && imageData.height <=
-        viewerData.height
-    },
-  }
-
-  var AnotherViewer = WINDOW.Viewer
-
-  var getUniqueID = function (id) {
-    return function () {
-      id += 1
-      return id
-    }
-  }(-1)
-
-  var Viewer = /*#__PURE__*/function () {
-    /**
-     * Create a new Viewer.
-     * @param {Element} element - The target element for viewing.
-     * @param {Object} [options={}] - The configuration options.
-     */
-    function Viewer (element) {
-      var options = arguments.length > 1 && arguments[1] !== undefined
-        ? arguments[1]
-        : {}
-
-      _classCallCheck(this, Viewer)
-
-      if (!element || element.nodeType !== 1) {
-        throw new Error(
-          'The first argument is required and must be an element.')
-      }
-
-      this.element = element
-      this.options = assign({}, DEFAULTS, isPlainObject(options) && options)
-      this.action = false
-      this.fading = false
-      this.fulled = false
-      this.hiding = false
-      this.imageClicked = false
-      this.imageData = {}
-      this.index = this.options.initialViewIndex
-      this.isImg = false
-      this.isShown = false
-      this.length = 0
-      this.moving = false
-      this.played = false
-      this.playing = false
-      this.pointers = {}
-      this.ready = false
-      this.rotating = false
-      this.scaling = false
-      this.showing = false
-      this.timeout = false
-      this.tooltipping = false
-      this.viewed = false
-      this.viewing = false
-      this.wheeling = false
-      this.zooming = false
-      this.id = getUniqueID()
-      this.init()
-    }
-
-    _createClass(Viewer, [
-      {
-        key: 'init', value: function init () {
-          var _this = this
-
-          var element = this.element, options = this.options
-
-          if (element[NAMESPACE]) {
-            return
-          }
-
-          element[NAMESPACE] = this // The `focus` option requires the `keyboard` option set to `true`.
-
-          if (options.focus && !options.keyboard) {
-            options.focus = false
-          }
-
-          var isImg = element.localName === 'img'
-          var images = []
-          forEach(isImg ? [element] : element.querySelectorAll('img'),
-            function (image) {
-              if (isFunction(options.filter)) {
-                if (options.filter.call(_this, image)) {
-                  images.push(image)
-                }
-              } else if (_this.getImageURL(image)) {
-                images.push(image)
-              }
-            })
-          this.isImg = isImg
-          this.length = images.length
-          this.images = images
-          this.initBody() // Override `transition` option if it is not supported
-
-          if (isUndefined(document.createElement(NAMESPACE).style.transition)) {
-            options.transition = false
-          }
-
-          if (options.inline) {
-            var count = 0
-
-            var progress = function progress () {
-              count += 1
-
-              if (count === _this.length) {
-                var timeout
-                _this.initializing = false
-                _this.delaying = {
-                  abort: function abort () {
-                    clearTimeout(timeout)
-                  },
-                } // build asynchronously to keep `this.viewer` is accessible in `ready` event handler.
-
-                timeout = setTimeout(function () {
-                  _this.delaying = false
-
-                  _this.build()
-                }, 0)
-              }
-            }
-
-            this.initializing = {
-              abort: function abort () {
-                forEach(images, function (image) {
-                  if (!image.complete) {
-                    removeListener(image, EVENT_LOAD, progress)
-                  }
-                })
-              },
-            }
-            forEach(images, function (image) {
-              if (image.complete) {
-                progress()
-              } else {
-                addListener(image, EVENT_LOAD, progress, {
-                  once: true,
-                })
-              }
-            })
-          } else {
-            addListener(element, EVENT_CLICK, this.onStart = function (_ref) {
-              var target = _ref.target
-
-              if (target.localName === 'img' && (!isFunction(options.filter) ||
-                options.filter.call(_this, target))) {
-                _this.view(_this.images.indexOf(target))
-              }
-            })
-          }
-        },
-      }, {
-        key: 'build', value: function build () {
-          if (this.ready) {
-            return
-          }
-
-          var element = this.element, options = this.options
-          var parent = element.parentNode
-          var template = document.createElement('div')
-          template.innerHTML = TEMPLATE
-          var viewer = template.querySelector(
-            '.'.concat(NAMESPACE, '-container'))
-          var title = viewer.querySelector('.'.concat(NAMESPACE, '-title'))
-          var toolbar = viewer.querySelector('.'.concat(NAMESPACE, '-toolbar'))
-          var navbar = viewer.querySelector('.'.concat(NAMESPACE, '-navbar'))
-          var button = viewer.querySelector('.'.concat(NAMESPACE, '-button'))
-          var canvas = viewer.querySelector('.'.concat(NAMESPACE, '-canvas'))
-          this.parent = parent
-          this.viewer = viewer
-          this.title = title
-          this.toolbar = toolbar
-          this.navbar = navbar
-          this.button = button
-          this.canvas = canvas
-          this.footer = viewer.querySelector('.'.concat(NAMESPACE, '-footer'))
-          this.tooltipBox = viewer.querySelector(
-            '.'.concat(NAMESPACE, '-tooltip'))
-          this.player = viewer.querySelector('.'.concat(NAMESPACE, '-player'))
-          this.list = viewer.querySelector('.'.concat(NAMESPACE, '-list'))
-          viewer.id = ''.concat(NAMESPACE).concat(this.id)
-          title.id = ''.concat(NAMESPACE, 'Title').concat(this.id)
-          addClass(title, !options.title ? CLASS_HIDE : getResponsiveClass(
-            Array.isArray(options.title) ? options.title[0] : options.title))
-          addClass(navbar,
-            !options.navbar ? CLASS_HIDE : getResponsiveClass(options.navbar))
-          toggleClass(button, CLASS_HIDE, !options.button)
-
-          if (options.keyboard) {
-            button.setAttribute('tabindex', 0)
-          }
-
-          if (options.backdrop) {
-            addClass(viewer, ''.concat(NAMESPACE, '-backdrop'))
-
-            if (!options.inline && options.backdrop !== 'static') {
-              setData(canvas, DATA_ACTION, 'hide')
-            }
-          }
-
-          if (isString(options.className) && options.className) {
-            // In case there are multiple class names
-            options.className.split(REGEXP_SPACES).
-              forEach(function (className) {
-                addClass(viewer, className)
-              })
-          }
-
-          if (options.toolbar) {
-            var list = document.createElement('ul')
-            var custom = isPlainObject(options.toolbar)
-            var zoomButtons = BUTTONS.slice(0, 3)
-            var rotateButtons = BUTTONS.slice(7, 9)
-            var scaleButtons = BUTTONS.slice(9)
-
-            if (!custom) {
-              addClass(toolbar, getResponsiveClass(options.toolbar))
-            }
-
-            forEach(custom ? options.toolbar : BUTTONS,
-              function (value, index) {
-                var deep = custom && isPlainObject(value)
-                var name = custom ? hyphenate(index) : value
-                var show = deep && !isUndefined(value.show) ? value.show : value
-
-                if (!show || !options.zoomable && zoomButtons.indexOf(name) !==
-                  -1 || !options.rotatable && rotateButtons.indexOf(name) !==
-                  -1 || !options.scalable && scaleButtons.indexOf(name) !==
-                  -1) {
-                  return
-                }
-
-                var size = deep && !isUndefined(value.size) ? value.size : value
-                var click = deep && !isUndefined(value.click)
-                  ? value.click
-                  : value
-                var item = document.createElement('li')
-
-                if (options.keyboard) {
-                  item.setAttribute('tabindex', 0)
-                }
-
-                item.setAttribute('role', 'button')
-                addClass(item, ''.concat(NAMESPACE, '-').concat(name))
-
-                if (!isFunction(click)) {
-                  setData(item, DATA_ACTION, name)
-                }
-
-                if (isNumber(show)) {
-                  addClass(item, getResponsiveClass(show))
-                }
-
-                if (['small', 'large'].indexOf(size) !== -1) {
-                  addClass(item, ''.concat(NAMESPACE, '-').concat(size))
-                } else if (name === 'play') {
-                  addClass(item, ''.concat(NAMESPACE, '-large'))
-                }
-
-                if (isFunction(click)) {
-                  addListener(item, EVENT_CLICK, click)
-                }
-                // NOTE: updated by Vanessa
-                let iconName = ''
-                switch (name) {
-                  case 'zoom-in':
-                    iconName = 'Add'
-                    break
-                  case 'zoom-out':
-                    iconName = 'Line'
-                    break
-                  case 'one-to-one':
-                    iconName = 'Pause'
-                    break
-                  case 'reset':
-                    iconName = 'Refresh'
-                    break
-                  case 'prev':
-                    iconName = 'Left'
-                    break
-                  case 'play':
-                    iconName = 'Play'
-                    break
-                  case'next':
-                    iconName = 'Right'
-                    break
-                  case 'rotate-left':
-                    iconName = 'Undo'
-                    break
-                  case 'rotate-right':
-                    iconName = 'Redo'
-                    break
-                  case 'flip-horizontal':
-                    iconName = 'SplitLR'
-                    break
-                  case 'flip-vertical':
-                    iconName = 'SplitTB'
-                    break
-                  case 'close':
-                    iconName = 'Close'
-                    break
-                }
-                item.innerHTML = `<svg${name === 'close'
-                  ? ' style="width:8px"'
-                  : ''}><use xlink:href="#icon${iconName}"></use></svg>`
-                list.appendChild(item)
-              })
-            toolbar.appendChild(list)
-          } else {
-            addClass(toolbar, CLASS_HIDE)
-          }
-
-          if (!options.rotatable) {
-            var rotates = toolbar.querySelectorAll('li[class*="rotate"]')
-            addClass(rotates, CLASS_INVISIBLE)
-            forEach(rotates, function (rotate) {
-              toolbar.appendChild(rotate)
-            })
-          }
-
-          if (options.inline) {
-            addClass(button, CLASS_FULLSCREEN)
-            setStyle(viewer, {
-              zIndex: options.zIndexInline,
-            })
-
-            if (window.getComputedStyle(parent).position === 'static') {
-              setStyle(parent, {
-                position: 'relative',
-              })
-            }
-
-            parent.insertBefore(viewer, element.nextSibling)
-          } else {
-            addClass(button, CLASS_CLOSE)
-            addClass(viewer, CLASS_FIXED)
-            addClass(viewer, CLASS_FADE)
-            addClass(viewer, CLASS_HIDE)
-            setStyle(viewer, {
-              zIndex: options.zIndex,
-            })
-            var container = options.container
-
-            if (isString(container)) {
-              container = element.ownerDocument.querySelector(container)
-            }
-
-            if (!container) {
-              container = this.body
-            }
-
-            container.appendChild(viewer)
-          }
-
-          if (options.inline) {
-            this.render()
-            this.bind()
-            this.isShown = true
-          }
-
-          this.ready = true
-
-          if (isFunction(options.ready)) {
-            addListener(element, EVENT_READY, options.ready, {
-              once: true,
-            })
-          }
-
-          if (dispatchEvent(element, EVENT_READY) === false) {
-            this.ready = false
-            return
-          }
-
-          if (this.ready && options.inline) {
-            this.view(this.index)
-          }
-        }, /**
-         * Get the no conflict viewer class.
-         * @returns {Viewer} The viewer class.
-         */
-
-      }], [
-      {
-        key: 'noConflict', value: function noConflict () {
-          window.Viewer = AnotherViewer
-          return Viewer
-        }, /**
-         * Change the default options.
-         * @param {Object} options - The new default options.
-         */
-
-      }, {
-        key: 'setDefaults', value: function setDefaults (options) {
-          assign(DEFAULTS, isPlainObject(options) && options)
-        },
-      }])
-
-    return Viewer
-  }()
-
-  assign(Viewer.prototype, render, events, handlers, methods, others)
-
-  return Viewer
-
-}))
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