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强大的图片查看器插件Viewer.js
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/449471/1247407/Viewer.js
/*!
* Viewer.js v1.11.5
* https://fengyuanchen.github.io/viewerjs
*
* Copyright 2015-present Chen Fengyuan
* Released under the MIT license
*
* Date: 2023-08-26T07:33:14.329Z
*/
(function () {
let cssResource = `
.viewer-close:before,.viewer-flip-horizontal:before,.viewer-flip-vertical:before,.viewer-fullscreen-exit:before,.viewer-fullscreen:before,.viewer-next:before,.viewer-one-to-one:before,.viewer-play:before,.viewer-prev:before,.viewer-reset:before,.viewer-rotate-left:before,.viewer-rotate-right:before,.viewer-zoom-in:before,.viewer-zoom-out:before{display:block;width:20px;height:20px;background-image:url(data:image/png;base64,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);background-size:280px;background-repeat:no-repeat;color:transparent;font-size:0;line-height:0}
.viewer-zoom-in:before{background-position:0 0;content:"Zoom In"}
.viewer-zoom-out:before{background-position:-20px 0;content:"Zoom Out"}
.viewer-one-to-one:before{background-position:-40px 0;content:"One to One"}
.viewer-reset:before{background-position:-60px 0;content:"Reset"}
.viewer-prev:before{background-position:-80px 0;content:"Previous"}
.viewer-play:before{background-position:-100px 0;content:"Play"}
.viewer-next:before{background-position:-120px 0;content:"Next"}
.viewer-rotate-left:before{background-position:-140px 0;content:"Rotate Left"}
.viewer-rotate-right:before{background-position:-160px 0;content:"Rotate Right"}
.viewer-flip-horizontal:before{background-position:-180px 0;content:"Flip Horizontal"}
.viewer-flip-vertical:before{background-position:-200px 0;content:"Flip Vertical"}
.viewer-fullscreen:before{background-position:-220px 0;content:"Enter Full Screen"}
.viewer-fullscreen-exit:before{background-position:-240px 0;content:"Exit Full Screen"}
.viewer-close:before{background-position:-260px 0;content:"Close"}
.viewer-container{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;font-size:0;line-height:0;direction:ltr;-webkit-tap-highlight-color:transparent;-ms-touch-action:none;touch-action:none;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}
.viewer-container ::-moz-selection,.viewer-container::-moz-selection{background-color:transparent}
.viewer-container ::selection,.viewer-container::selection{background-color:transparent}
.viewer-container:focus{outline:0}
.viewer-container img{display:block;width:100%;height:auto;max-width:none!important;max-height:none!important;min-width:0!important;min-height:0!important}
.viewer-canvas{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden}
.viewer-canvas>img{margin:15px auto;width:auto;height:auto;max-width:90%!important}
.viewer-footer{position:absolute;right:0;bottom:0;left:0;overflow:hidden;text-align:center}
.viewer-navbar{overflow:hidden;background-color:rgba(0,0%,0%,50%)}
.viewer-list{overflow:hidden;box-sizing:content-box;margin:0;padding:1px 0;height:50px}
.viewer-list>li{float:left;overflow:hidden;width:30px;height:50px;color:transparent;font-size:0;line-height:0;opacity:.5;cursor:pointer;transition:opacity .15s}
.viewer-list>li:focus,.viewer-list>li:hover{opacity:.75}
.viewer-list>li:focus{outline:0}
.viewer-list>li+li{margin-left:1px}
.viewer-list>.viewer-loading{position:relative}
.viewer-list>.viewer-loading:after{margin-top:-10px;margin-left:-10px;width:20px;height:20px;border-width:2px}
.viewer-list>.viewer-active,.viewer-list>.viewer-active:focus,.viewer-list>.viewer-active:hover{opacity:1}
.viewer-player{right:0;bottom:0;z-index:1;display:none;background-color:#000;cursor:none}
.viewer-player,.viewer-player>img{position:absolute;top:0;left:0}
.viewer-toolbar>ul{display:inline-block;overflow:hidden;margin:0 auto 5px;padding:6px 3px}
.viewer-toolbar>ul>li{float:left;overflow:hidden;width:24px;height:24px;border-radius:50%;background-color:rgba(0,0%,0%,50%);cursor:pointer;transition:background-color .15s}
.viewer-toolbar>ul>li:focus,.viewer-toolbar>ul>li:hover{background-color:rgba(0,0%,0%,80%)}
.viewer-toolbar>ul>li:focus{position:relative;z-index:1;outline:0;box-shadow:0 0 3px #fff}
.viewer-toolbar>ul>li:before{margin:2px}
.viewer-toolbar>ul>li+li{margin-left:1px}
.viewer-toolbar>ul>.viewer-small{margin-top:3px;margin-bottom:3px;width:18px;height:18px}
.viewer-toolbar>ul>.viewer-small:before{margin:-1px}
.viewer-toolbar>ul>.viewer-large{margin-top:-3px;margin-bottom:-3px;width:30px;height:30px}
.viewer-toolbar>ul>.viewer-large:before{margin:5px}
.viewer-tooltip{position:absolute;top:50%;left:50%;display:none;margin-top:-10px;margin-left:-25px;width:50px;height:20px;border-radius:10px;background-color:rgba(0,0%,0%,80%);color:#fff;text-align:center;font-size:12px;line-height:20px}
.viewer-title{display:inline-block;overflow:hidden;margin:5px 5%;max-width:90%;min-height:14px;color:#ccc;text-overflow:ellipsis;white-space:nowrap;font-size:12px;line-height:1.2;opacity:.8;transition:opacity .15s}
.viewer-title:hover{opacity:1}
.viewer-button{position:absolute;top:-40px;right:-40px;overflow:hidden;width:80px;height:80px;border-radius:50%;background-color:rgba(0,0%,0%,50%);cursor:pointer;transition:background-color .15s;-webkit-app-region:no-drag}
.viewer-button:focus,.viewer-button:hover{background-color:rgba(0,0%,0%,80%)}
.viewer-button:focus{outline:0;box-shadow:0 0 3px #fff}
.viewer-button:before{position:absolute;bottom:15px;left:15px}
.viewer-fixed{position:fixed}
.viewer-open{overflow:hidden}
.viewer-show{display:block}
.viewer-hide{display:none}
.viewer-backdrop{background-color:rgba(0,0%,0%,50%)}
.viewer-invisible{visibility:hidden}
.viewer-move{cursor:move;cursor:grab}
.viewer-fade{opacity:0}
.viewer-in{opacity:1}
.viewer-transition{transition:all .3s}
@keyframes viewer-spinner{0%{transform:rotate(0)}
to{transform:rotate(1turn)}
}
.viewer-loading:after{position:absolute;top:50%;left:50%;z-index:1;display:inline-block;margin-top:-20px;margin-left:-20px;width:40px;height:40px;border-radius:50%;content:"";animation:viewer-spinner 1s linear infinite;border:4px solid rgba(255,255%,255%,10%);border-left-color:rgba(255,255%,255%,50%)}
@media (max-width:767px){.viewer-hide-xs-down{display:none}}
@media (max-width:991px){.viewer-hide-sm-down{display:none}}
@media (max-width:1199px){.viewer-hide-md-down{display:none}}
`;
let cssResourceNode = document.createElement("style");
cssResourceNode.setAttribute("type", "text/css");
cssResourceNode.setAttribute("data-insert-from", "viewer");
cssResourceNode.innerHTML = cssResource;
if (document.head) {
document.head.append(cssResourceNode);
} else if (document.documentElement) {
if (document.documentElement.childNodes.length === 0) {
document.documentElement.appendChild(cssResourceNode);
} else {
document.documentElement.insertBefore(
cssResourceNode,
document.documentElement.childNodes[
document.documentElement.childNodes.length - 1
]
);
}
} else {
throw new Error("未找到可以插入到页面中的元素");
}
})();
/*!
* Viewer.js v1.11.5
* https://fengyuanchen.github.io/viewerjs
*
* Copyright 2015-present Chen Fengyuan
* Released under the MIT license
*
* Date: 2023-08-26T07:33:16.755Z
*/
(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(e, r) {
var t = Object.keys(e);
if (Object.getOwnPropertySymbols) {
var o = Object.getOwnPropertySymbols(e);
r &&
(o = o.filter(function (r) {
return Object.getOwnPropertyDescriptor(e, r).enumerable;
})),
t.push.apply(t, o);
}
return t;
}
function _objectSpread2(e) {
for (var r = 1; r < arguments.length; r++) {
var t = null != arguments[r] ? arguments[r] : {};
r % 2
? ownKeys(Object(t), !0).forEach(function (r) {
_defineProperty(e, r, t[r]);
})
: Object.getOwnPropertyDescriptors
? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t))
: ownKeys(Object(t)).forEach(function (r) {
Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r));
});
}
return e;
}
function _typeof(o) {
"@babel/helpers - typeof";
return (
(_typeof =
"function" == typeof Symbol && "symbol" == typeof Symbol.iterator
? function (o) {
return typeof o;
}
: function (o) {
return o &&
"function" == typeof Symbol &&
o.constructor === Symbol &&
o !== Symbol.prototype
? "symbol"
: typeof o;
}),
_typeof(o)
);
}
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, _toPropertyKey(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) {
key = _toPropertyKey(key);
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true,
});
} else {
obj[key] = value;
}
return obj;
}
function _toPrimitive(input, hint) {
if (typeof input !== "object" || input === null) return input;
var prim = input[Symbol.toPrimitive];
if (prim !== undefined) {
var res = prim.call(input, hint || "default");
if (typeof res !== "object") return res;
throw new TypeError("@@toPrimitive must return a primitive value.");
}
return (hint === "string" ? String : Number)(input);
}
function _toPropertyKey(arg) {
var key = _toPrimitive(arg, "string");
return typeof key === "symbol" ? key : String(key);
}
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 coverage of the viewing image.
* @type {number}
*/
initialCoverage: 0.9,
/**
* Define the initial index of the 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, "&")
.replace(/"/g, """)
.replace(/'/g, "'")
.replace(/</g, "<")
.replace(/>/g, ">")
: 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 &&
/Version\/\d+(\.\d+)+?\s+Safari/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);
}
});
if (options.navbar) {
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 initialCoverage = Math.max(
0,
Math.min(1, options.initialCoverage)
);
var width = viewerWidth;
var height = viewerHeight;
_this2.imageInitializing = false;
if (viewerHeight * aspectRatio > viewerWidth) {
height = viewerWidth / aspectRatio;
} else {
width = viewerHeight * aspectRatio;
}
initialCoverage = isNumber(initialCoverage) ? initialCoverage : 0.9;
width = Math.min(width * initialCoverage, naturalWidth);
height = Math.min(height * initialCoverage, 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() {
var image = this.image;
if (image) {
if (this.viewing) {
this.viewing.abort();
}
image.parentNode.removeChild(image);
this.image = null;
this.title.innerHTML = "";
}
},
};
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);
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":
if (!this.pointerMoved) {
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:
if (this.played && this.playing) {
this.playing.prev();
} else {
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:
if (this.played && this.playing) {
this.playing.next();
} else {
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;
this.pointerMoved = false;
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, null, 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, 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} [showTooltip=false] - Indicates whether to show the tooltip.
* @param {Object} [pivot] - The pivot point coordinate for zooming.
* @param {Event} [_originalEvent=null] - The original event if any.
* @returns {Viewer} this
*/
zoom: function zoom(ratio) {
var showTooltip =
arguments.length > 1 && arguments[1] !== undefined
? arguments[1]
: false;
var pivot =
arguments.length > 2 && arguments[2] !== undefined
? arguments[2]
: null;
var _originalEvent =
arguments.length > 3 && arguments[3] !== undefined
? arguments[3]
: 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,
showTooltip,
pivot,
_originalEvent
);
return this;
},
/**
* Zoom the image to an absolute ratio.
* @param {number} ratio - The target ratio.
* @param {boolean} [showTooltip] - Indicates whether to show the tooltip.
* @param {Object} [pivot] - The pivot point coordinate for zooming.
* @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 showTooltip =
arguments.length > 1 && arguments[1] !== undefined
? arguments[1]
: false;
var pivot =
arguments.length > 2 && arguments[2] !== undefined
? arguments[2]
: null;
var _originalEvent =
arguments.length > 3 && arguments[3] !== undefined
? arguments[3]
: null;
var _zoomable =
arguments.length > 4 && arguments[4] !== undefined
? arguments[4]
: 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 if (
isPlainObject(pivot) &&
isNumber(pivot.x) &&
isNumber(pivot.y)
) {
imageData.x -= offsetWidth * ((pivot.x - x) / width);
imageData.y -= offsetHeight * ((pivot.y - 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 (showTooltip) {
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 prev = function prev() {
clearTimeout(_this7.playing.timeout);
removeClass(list[index], CLASS_IN);
index -= 1;
index = index >= 0 ? index : total - 1;
addClass(list[index], CLASS_IN);
_this7.playing.timeout = setTimeout(prev, options.interval);
};
var next = function next() {
clearTimeout(_this7.playing.timeout);
removeClass(list[index], CLASS_IN);
index += 1;
index = index < total ? index : 0;
addClass(list[index], CLASS_IN);
_this7.playing.timeout = setTimeout(next, options.interval);
};
if (total > 1) {
this.playing = {
prev: prev,
next: next,
timeout: setTimeout(next, options.interval),
};
}
}
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;
clearTimeout(this.playing.timeout);
this.playing = false;
this.played = false;
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, null, _originalEvent);
} else {
this.zoomTo(1, true, null, _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)
) {
return;
}
while (target) {
// Avoid conflicts with other modals (#474, #540)
if (
target.getAttribute("tabindex") !== null ||
target.getAttribute("aria-modal") === "true"
) {
return;
}
target = target.parentElement;
}
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);
if (this.scrollbarWidth > 0) {
body.style.paddingRight = "".concat(
this.scrollbarWidth +
(parseFloat(this.initialBodyComputedPaddingRight) || 0),
"px"
);
}
},
close: function close() {
var body = this.body;
removeClass(body, CLASS_OPEN);
if (this.scrollbarWidth > 0) {
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.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.fulled = false;
this.viewed = false;
this.isShown = false;
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:
if (offsetX !== 0 || offsetY !== 0) {
this.pointerMoved = true;
this.move(offsetX, offsetY, event);
}
break;
// Zoom the current image
case ACTION_ZOOM:
this.zoom(getMaxZoomRatio(pointers), false, null, 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.pointerMoved = 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);
removeListener(image, EVENT_ERROR, progress);
}
});
},
};
forEach(images, function (image) {
if (image.complete) {
progress();
} else {
var onLoad;
var onError;
addListener(
image,
EVENT_LOAD,
(onLoad = function onLoad() {
removeListener(image, EVENT_ERROR, onError);
progress();
}),
{
once: true,
}
);
addListener(
image,
EVENT_ERROR,
(onError = function onError() {
removeListener(image, EVENT_LOAD, onLoad);
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);
}
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;
});