lite-virtual-list
Version:
a vue components support waterfall flow and have large data lists with high scrolling performance
1,548 lines (1,305 loc) • 64.7 kB
JavaScript
module.exports =
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/******/ function __webpack_require__(moduleId) {
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/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
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/******/ __webpack_require__.m = modules;
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/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
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/******/ return __webpack_require__(__webpack_require__.s = "fb15");
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/******/ ({
/***/ "00fd":
/***/ (function(module, exports, __webpack_require__) {
var Symbol = __webpack_require__("9e69");
/** Used for built-in method references. */
var objectProto = Object.prototype;
/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;
/**
* Used to resolve the
* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
* of values.
*/
var nativeObjectToString = objectProto.toString;
/** Built-in value references. */
var symToStringTag = Symbol ? Symbol.toStringTag : undefined;
/**
* A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
*
* @private
* @param {*} value The value to query.
* @returns {string} Returns the raw `toStringTag`.
*/
function getRawTag(value) {
var isOwn = hasOwnProperty.call(value, symToStringTag),
tag = value[symToStringTag];
try {
value[symToStringTag] = undefined;
var unmasked = true;
} catch (e) {}
var result = nativeObjectToString.call(value);
if (unmasked) {
if (isOwn) {
value[symToStringTag] = tag;
} else {
delete value[symToStringTag];
}
}
return result;
}
module.exports = getRawTag;
/***/ }),
/***/ "0f32":
/***/ (function(module, exports, __webpack_require__) {
var debounce = __webpack_require__("b047"),
isObject = __webpack_require__("1a8c");
/** Error message constants. */
var FUNC_ERROR_TEXT = 'Expected a function';
/**
* Creates a throttled function that only invokes `func` at most once per
* every `wait` milliseconds. The throttled function comes with a `cancel`
* method to cancel delayed `func` invocations and a `flush` method to
* immediately invoke them. Provide `options` to indicate whether `func`
* should be invoked on the leading and/or trailing edge of the `wait`
* timeout. The `func` is invoked with the last arguments provided to the
* throttled function. Subsequent calls to the throttled function return the
* result of the last `func` invocation.
*
* **Note:** If `leading` and `trailing` options are `true`, `func` is
* invoked on the trailing edge of the timeout only if the throttled function
* is invoked more than once during the `wait` timeout.
*
* If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
* until to the next tick, similar to `setTimeout` with a timeout of `0`.
*
* See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
* for details over the differences between `_.throttle` and `_.debounce`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to throttle.
* @param {number} [wait=0] The number of milliseconds to throttle invocations to.
* @param {Object} [options={}] The options object.
* @param {boolean} [options.leading=true]
* Specify invoking on the leading edge of the timeout.
* @param {boolean} [options.trailing=true]
* Specify invoking on the trailing edge of the timeout.
* @returns {Function} Returns the new throttled function.
* @example
*
* // Avoid excessively updating the position while scrolling.
* jQuery(window).on('scroll', _.throttle(updatePosition, 100));
*
* // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
* var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
* jQuery(element).on('click', throttled);
*
* // Cancel the trailing throttled invocation.
* jQuery(window).on('popstate', throttled.cancel);
*/
function throttle(func, wait, options) {
var leading = true,
trailing = true;
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
if (isObject(options)) {
leading = 'leading' in options ? !!options.leading : leading;
trailing = 'trailing' in options ? !!options.trailing : trailing;
}
return debounce(func, wait, {
'leading': leading,
'maxWait': wait,
'trailing': trailing
});
}
module.exports = throttle;
/***/ }),
/***/ "1310":
/***/ (function(module, exports) {
/**
* Checks if `value` is object-like. A value is object-like if it's not `null`
* and has a `typeof` result of "object".
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
* @example
*
* _.isObjectLike({});
* // => true
*
* _.isObjectLike([1, 2, 3]);
* // => true
*
* _.isObjectLike(_.noop);
* // => false
*
* _.isObjectLike(null);
* // => false
*/
function isObjectLike(value) {
return value != null && typeof value == 'object';
}
module.exports = isObjectLike;
/***/ }),
/***/ "1a8c":
/***/ (function(module, exports) {
/**
* Checks if `value` is the
* [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
* of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is an object, else `false`.
* @example
*
* _.isObject({});
* // => true
*
* _.isObject([1, 2, 3]);
* // => true
*
* _.isObject(_.noop);
* // => true
*
* _.isObject(null);
* // => false
*/
function isObject(value) {
var type = typeof value;
return value != null && (type == 'object' || type == 'function');
}
module.exports = isObject;
/***/ }),
/***/ "24fb":
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
// css base code, injected by the css-loader
// eslint-disable-next-line func-names
module.exports = function (useSourceMap) {
var list = []; // return the list of modules as css string
list.toString = function toString() {
return this.map(function (item) {
var content = cssWithMappingToString(item, useSourceMap);
if (item[2]) {
return "@media ".concat(item[2], " {").concat(content, "}");
}
return content;
}).join('');
}; // import a list of modules into the list
// eslint-disable-next-line func-names
list.i = function (modules, mediaQuery, dedupe) {
if (typeof modules === 'string') {
// eslint-disable-next-line no-param-reassign
modules = [[null, modules, '']];
}
var alreadyImportedModules = {};
if (dedupe) {
for (var i = 0; i < this.length; i++) {
// eslint-disable-next-line prefer-destructuring
var id = this[i][0];
if (id != null) {
alreadyImportedModules[id] = true;
}
}
}
for (var _i = 0; _i < modules.length; _i++) {
var item = [].concat(modules[_i]);
if (dedupe && alreadyImportedModules[item[0]]) {
// eslint-disable-next-line no-continue
continue;
}
if (mediaQuery) {
if (!item[2]) {
item[2] = mediaQuery;
} else {
item[2] = "".concat(mediaQuery, " and ").concat(item[2]);
}
}
list.push(item);
}
};
return list;
};
function cssWithMappingToString(item, useSourceMap) {
var content = item[1] || ''; // eslint-disable-next-line prefer-destructuring
var cssMapping = item[3];
if (!cssMapping) {
return content;
}
if (useSourceMap && typeof btoa === 'function') {
var sourceMapping = toComment(cssMapping);
var sourceURLs = cssMapping.sources.map(function (source) {
return "/*# sourceURL=".concat(cssMapping.sourceRoot || '').concat(source, " */");
});
return [content].concat(sourceURLs).concat([sourceMapping]).join('\n');
}
return [content].join('\n');
} // Adapted from convert-source-map (MIT)
function toComment(sourceMap) {
// eslint-disable-next-line no-undef
var base64 = btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap))));
var data = "sourceMappingURL=data:application/json;charset=utf-8;base64,".concat(base64);
return "/*# ".concat(data, " */");
}
/***/ }),
/***/ "29f3":
/***/ (function(module, exports) {
/** Used for built-in method references. */
var objectProto = Object.prototype;
/**
* Used to resolve the
* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
* of values.
*/
var nativeObjectToString = objectProto.toString;
/**
* Converts `value` to a string using `Object.prototype.toString`.
*
* @private
* @param {*} value The value to convert.
* @returns {string} Returns the converted string.
*/
function objectToString(value) {
return nativeObjectToString.call(value);
}
module.exports = objectToString;
/***/ }),
/***/ "2b3e":
/***/ (function(module, exports, __webpack_require__) {
var freeGlobal = __webpack_require__("585a");
/** Detect free variable `self`. */
var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
/** Used as a reference to the global object. */
var root = freeGlobal || freeSelf || Function('return this')();
module.exports = root;
/***/ }),
/***/ "3729":
/***/ (function(module, exports, __webpack_require__) {
var Symbol = __webpack_require__("9e69"),
getRawTag = __webpack_require__("00fd"),
objectToString = __webpack_require__("29f3");
/** `Object#toString` result references. */
var nullTag = '[object Null]',
undefinedTag = '[object Undefined]';
/** Built-in value references. */
var symToStringTag = Symbol ? Symbol.toStringTag : undefined;
/**
* The base implementation of `getTag` without fallbacks for buggy environments.
*
* @private
* @param {*} value The value to query.
* @returns {string} Returns the `toStringTag`.
*/
function baseGetTag(value) {
if (value == null) {
return value === undefined ? undefinedTag : nullTag;
}
return (symToStringTag && symToStringTag in Object(value))
? getRawTag(value)
: objectToString(value);
}
module.exports = baseGetTag;
/***/ }),
/***/ "408c":
/***/ (function(module, exports, __webpack_require__) {
var root = __webpack_require__("2b3e");
/**
* Gets the timestamp of the number of milliseconds that have elapsed since
* the Unix epoch (1 January 1970 00:00:00 UTC).
*
* @static
* @memberOf _
* @since 2.4.0
* @category Date
* @returns {number} Returns the timestamp.
* @example
*
* _.defer(function(stamp) {
* console.log(_.now() - stamp);
* }, _.now());
* // => Logs the number of milliseconds it took for the deferred invocation.
*/
var now = function() {
return root.Date.now();
};
module.exports = now;
/***/ }),
/***/ "4636":
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
/* harmony import */ var _node_modules_vue_style_loader_index_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_3_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_virtual_list_vue_vue_type_style_index_0_lang_css___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__("f6d5");
/* harmony import */ var _node_modules_vue_style_loader_index_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_3_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_virtual_list_vue_vue_type_style_index_0_lang_css___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_vue_style_loader_index_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_3_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_virtual_list_vue_vue_type_style_index_0_lang_css___WEBPACK_IMPORTED_MODULE_0__);
/* unused harmony reexport * */
/***/ }),
/***/ "499e":
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
// ESM COMPAT FLAG
__webpack_require__.r(__webpack_exports__);
// EXPORTS
__webpack_require__.d(__webpack_exports__, "default", function() { return /* binding */ addStylesClient; });
// CONCATENATED MODULE: ./node_modules/vue-style-loader/lib/listToStyles.js
/**
* Translates the list format produced by css-loader into something
* easier to manipulate.
*/
function listToStyles (parentId, list) {
var styles = []
var newStyles = {}
for (var i = 0; i < list.length; i++) {
var item = list[i]
var id = item[0]
var css = item[1]
var media = item[2]
var sourceMap = item[3]
var part = {
id: parentId + ':' + i,
css: css,
media: media,
sourceMap: sourceMap
}
if (!newStyles[id]) {
styles.push(newStyles[id] = { id: id, parts: [part] })
} else {
newStyles[id].parts.push(part)
}
}
return styles
}
// CONCATENATED MODULE: ./node_modules/vue-style-loader/lib/addStylesClient.js
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
Modified by Evan You @yyx990803
*/
var hasDocument = typeof document !== 'undefined'
if (typeof DEBUG !== 'undefined' && DEBUG) {
if (!hasDocument) {
throw new Error(
'vue-style-loader cannot be used in a non-browser environment. ' +
"Use { target: 'node' } in your Webpack config to indicate a server-rendering environment."
) }
}
/*
type StyleObject = {
id: number;
parts: Array<StyleObjectPart>
}
type StyleObjectPart = {
css: string;
media: string;
sourceMap: ?string
}
*/
var stylesInDom = {/*
[id: number]: {
id: number,
refs: number,
parts: Array<(obj?: StyleObjectPart) => void>
}
*/}
var head = hasDocument && (document.head || document.getElementsByTagName('head')[0])
var singletonElement = null
var singletonCounter = 0
var isProduction = false
var noop = function () {}
var options = null
var ssrIdKey = 'data-vue-ssr-id'
// Force single-tag solution on IE6-9, which has a hard limit on the # of <style>
// tags it will allow on a page
var isOldIE = typeof navigator !== 'undefined' && /msie [6-9]\b/.test(navigator.userAgent.toLowerCase())
function addStylesClient (parentId, list, _isProduction, _options) {
isProduction = _isProduction
options = _options || {}
var styles = listToStyles(parentId, list)
addStylesToDom(styles)
return function update (newList) {
var mayRemove = []
for (var i = 0; i < styles.length; i++) {
var item = styles[i]
var domStyle = stylesInDom[item.id]
domStyle.refs--
mayRemove.push(domStyle)
}
if (newList) {
styles = listToStyles(parentId, newList)
addStylesToDom(styles)
} else {
styles = []
}
for (var i = 0; i < mayRemove.length; i++) {
var domStyle = mayRemove[i]
if (domStyle.refs === 0) {
for (var j = 0; j < domStyle.parts.length; j++) {
domStyle.parts[j]()
}
delete stylesInDom[domStyle.id]
}
}
}
}
function addStylesToDom (styles /* Array<StyleObject> */) {
for (var i = 0; i < styles.length; i++) {
var item = styles[i]
var domStyle = stylesInDom[item.id]
if (domStyle) {
domStyle.refs++
for (var j = 0; j < domStyle.parts.length; j++) {
domStyle.parts[j](item.parts[j])
}
for (; j < item.parts.length; j++) {
domStyle.parts.push(addStyle(item.parts[j]))
}
if (domStyle.parts.length > item.parts.length) {
domStyle.parts.length = item.parts.length
}
} else {
var parts = []
for (var j = 0; j < item.parts.length; j++) {
parts.push(addStyle(item.parts[j]))
}
stylesInDom[item.id] = { id: item.id, refs: 1, parts: parts }
}
}
}
function createStyleElement () {
var styleElement = document.createElement('style')
styleElement.type = 'text/css'
head.appendChild(styleElement)
return styleElement
}
function addStyle (obj /* StyleObjectPart */) {
var update, remove
var styleElement = document.querySelector('style[' + ssrIdKey + '~="' + obj.id + '"]')
if (styleElement) {
if (isProduction) {
// has SSR styles and in production mode.
// simply do nothing.
return noop
} else {
// has SSR styles but in dev mode.
// for some reason Chrome can't handle source map in server-rendered
// style tags - source maps in <style> only works if the style tag is
// created and inserted dynamically. So we remove the server rendered
// styles and inject new ones.
styleElement.parentNode.removeChild(styleElement)
}
}
if (isOldIE) {
// use singleton mode for IE9.
var styleIndex = singletonCounter++
styleElement = singletonElement || (singletonElement = createStyleElement())
update = applyToSingletonTag.bind(null, styleElement, styleIndex, false)
remove = applyToSingletonTag.bind(null, styleElement, styleIndex, true)
} else {
// use multi-style-tag mode in all other cases
styleElement = createStyleElement()
update = applyToTag.bind(null, styleElement)
remove = function () {
styleElement.parentNode.removeChild(styleElement)
}
}
update(obj)
return function updateStyle (newObj /* StyleObjectPart */) {
if (newObj) {
if (newObj.css === obj.css &&
newObj.media === obj.media &&
newObj.sourceMap === obj.sourceMap) {
return
}
update(obj = newObj)
} else {
remove()
}
}
}
var replaceText = (function () {
var textStore = []
return function (index, replacement) {
textStore[index] = replacement
return textStore.filter(Boolean).join('\n')
}
})()
function applyToSingletonTag (styleElement, index, remove, obj) {
var css = remove ? '' : obj.css
if (styleElement.styleSheet) {
styleElement.styleSheet.cssText = replaceText(index, css)
} else {
var cssNode = document.createTextNode(css)
var childNodes = styleElement.childNodes
if (childNodes[index]) styleElement.removeChild(childNodes[index])
if (childNodes.length) {
styleElement.insertBefore(cssNode, childNodes[index])
} else {
styleElement.appendChild(cssNode)
}
}
}
function applyToTag (styleElement, obj) {
var css = obj.css
var media = obj.media
var sourceMap = obj.sourceMap
if (media) {
styleElement.setAttribute('media', media)
}
if (options.ssrId) {
styleElement.setAttribute(ssrIdKey, obj.id)
}
if (sourceMap) {
// https://developer.chrome.com/devtools/docs/javascript-debugging
// this makes source maps inside style tags work properly in Chrome
css += '\n/*# sourceURL=' + sourceMap.sources[0] + ' */'
// http://stackoverflow.com/a/26603875
css += '\n/*# sourceMappingURL=data:application/json;base64,' + btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))) + ' */'
}
if (styleElement.styleSheet) {
styleElement.styleSheet.cssText = css
} else {
while (styleElement.firstChild) {
styleElement.removeChild(styleElement.firstChild)
}
styleElement.appendChild(document.createTextNode(css))
}
}
/***/ }),
/***/ "585a":
/***/ (function(module, exports, __webpack_require__) {
/* WEBPACK VAR INJECTION */(function(global) {/** Detect free variable `global` from Node.js. */
var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
module.exports = freeGlobal;
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__("c8ba")))
/***/ }),
/***/ "8875":
/***/ (function(module, exports, __webpack_require__) {
var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;// addapted from the document.currentScript polyfill by Adam Miller
// MIT license
// source: https://github.com/amiller-gh/currentScript-polyfill
// added support for Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1620505
(function (root, factory) {
if (true) {
!(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
} else {}
}(typeof self !== 'undefined' ? self : this, function () {
function getCurrentScript () {
var descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript')
// for chrome
if (!descriptor && 'currentScript' in document && document.currentScript) {
return document.currentScript
}
// for other browsers with native support for currentScript
if (descriptor && descriptor.get !== getCurrentScript && document.currentScript) {
return document.currentScript
}
// IE 8-10 support script readyState
// IE 11+ & Firefox support stack trace
try {
throw new Error();
}
catch (err) {
// Find the second match for the "at" string to get file src url from stack.
var ieStackRegExp = /.*at [^(]*\((.*):(.+):(.+)\)$/ig,
ffStackRegExp = /@([^@]*):(\d+):(\d+)\s*$/ig,
stackDetails = ieStackRegExp.exec(err.stack) || ffStackRegExp.exec(err.stack),
scriptLocation = (stackDetails && stackDetails[1]) || false,
line = (stackDetails && stackDetails[2]) || false,
currentLocation = document.location.href.replace(document.location.hash, ''),
pageSource,
inlineScriptSourceRegExp,
inlineScriptSource,
scripts = document.getElementsByTagName('script'); // Live NodeList collection
if (scriptLocation === currentLocation) {
pageSource = document.documentElement.outerHTML;
inlineScriptSourceRegExp = new RegExp('(?:[^\\n]+?\\n){0,' + (line - 2) + '}[^<]*<script>([\\d\\D]*?)<\\/script>[\\d\\D]*', 'i');
inlineScriptSource = pageSource.replace(inlineScriptSourceRegExp, '$1').trim();
}
for (var i = 0; i < scripts.length; i++) {
// If ready state is interactive, return the script tag
if (scripts[i].readyState === 'interactive') {
return scripts[i];
}
// If src matches, return the script tag
if (scripts[i].src === scriptLocation) {
return scripts[i];
}
// If inline source matches, return the script tag
if (
scriptLocation === currentLocation &&
scripts[i].innerHTML &&
scripts[i].innerHTML.trim() === inlineScriptSource
) {
return scripts[i];
}
}
// If no match, return null
return null;
}
};
return getCurrentScript
}));
/***/ }),
/***/ "88b1":
/***/ (function(module, exports, __webpack_require__) {
// Imports
var ___CSS_LOADER_API_IMPORT___ = __webpack_require__("24fb");
exports = ___CSS_LOADER_API_IMPORT___(false);
// Module
exports.push([module.i, ".virtual-list{overflow-y:auto;position:relative;-webkit-overflow-scrolling:touch}.virtual-list *{box-sizing:border-box}.scroll-list{position:absolute;top:0;left:0;width:100%}.waterfall-list{display:flex;justify-content:space-between}.left-wrap,.right-wrap{width:50%}.left-item,.right-item{overflow:hidden}", ""]);
// Exports
module.exports = exports;
/***/ }),
/***/ "9e69":
/***/ (function(module, exports, __webpack_require__) {
var root = __webpack_require__("2b3e");
/** Built-in value references. */
var Symbol = root.Symbol;
module.exports = Symbol;
/***/ }),
/***/ "b047":
/***/ (function(module, exports, __webpack_require__) {
var isObject = __webpack_require__("1a8c"),
now = __webpack_require__("408c"),
toNumber = __webpack_require__("b4b0");
/** Error message constants. */
var FUNC_ERROR_TEXT = 'Expected a function';
/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax = Math.max,
nativeMin = Math.min;
/**
* Creates a debounced function that delays invoking `func` until after `wait`
* milliseconds have elapsed since the last time the debounced function was
* invoked. The debounced function comes with a `cancel` method to cancel
* delayed `func` invocations and a `flush` method to immediately invoke them.
* Provide `options` to indicate whether `func` should be invoked on the
* leading and/or trailing edge of the `wait` timeout. The `func` is invoked
* with the last arguments provided to the debounced function. Subsequent
* calls to the debounced function return the result of the last `func`
* invocation.
*
* **Note:** If `leading` and `trailing` options are `true`, `func` is
* invoked on the trailing edge of the timeout only if the debounced function
* is invoked more than once during the `wait` timeout.
*
* If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
* until to the next tick, similar to `setTimeout` with a timeout of `0`.
*
* See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
* for details over the differences between `_.debounce` and `_.throttle`.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {Function} func The function to debounce.
* @param {number} [wait=0] The number of milliseconds to delay.
* @param {Object} [options={}] The options object.
* @param {boolean} [options.leading=false]
* Specify invoking on the leading edge of the timeout.
* @param {number} [options.maxWait]
* The maximum time `func` is allowed to be delayed before it's invoked.
* @param {boolean} [options.trailing=true]
* Specify invoking on the trailing edge of the timeout.
* @returns {Function} Returns the new debounced function.
* @example
*
* // Avoid costly calculations while the window size is in flux.
* jQuery(window).on('resize', _.debounce(calculateLayout, 150));
*
* // Invoke `sendMail` when clicked, debouncing subsequent calls.
* jQuery(element).on('click', _.debounce(sendMail, 300, {
* 'leading': true,
* 'trailing': false
* }));
*
* // Ensure `batchLog` is invoked once after 1 second of debounced calls.
* var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
* var source = new EventSource('/stream');
* jQuery(source).on('message', debounced);
*
* // Cancel the trailing debounced invocation.
* jQuery(window).on('popstate', debounced.cancel);
*/
function debounce(func, wait, options) {
var lastArgs,
lastThis,
maxWait,
result,
timerId,
lastCallTime,
lastInvokeTime = 0,
leading = false,
maxing = false,
trailing = true;
if (typeof func != 'function') {
throw new TypeError(FUNC_ERROR_TEXT);
}
wait = toNumber(wait) || 0;
if (isObject(options)) {
leading = !!options.leading;
maxing = 'maxWait' in options;
maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
trailing = 'trailing' in options ? !!options.trailing : trailing;
}
function invokeFunc(time) {
var args = lastArgs,
thisArg = lastThis;
lastArgs = lastThis = undefined;
lastInvokeTime = time;
result = func.apply(thisArg, args);
return result;
}
function leadingEdge(time) {
// Reset any `maxWait` timer.
lastInvokeTime = time;
// Start the timer for the trailing edge.
timerId = setTimeout(timerExpired, wait);
// Invoke the leading edge.
return leading ? invokeFunc(time) : result;
}
function remainingWait(time) {
var timeSinceLastCall = time - lastCallTime,
timeSinceLastInvoke = time - lastInvokeTime,
timeWaiting = wait - timeSinceLastCall;
return maxing
? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
: timeWaiting;
}
function shouldInvoke(time) {
var timeSinceLastCall = time - lastCallTime,
timeSinceLastInvoke = time - lastInvokeTime;
// Either this is the first call, activity has stopped and we're at the
// trailing edge, the system time has gone backwards and we're treating
// it as the trailing edge, or we've hit the `maxWait` limit.
return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
(timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
}
function timerExpired() {
var time = now();
if (shouldInvoke(time)) {
return trailingEdge(time);
}
// Restart the timer.
timerId = setTimeout(timerExpired, remainingWait(time));
}
function trailingEdge(time) {
timerId = undefined;
// Only invoke if we have `lastArgs` which means `func` has been
// debounced at least once.
if (trailing && lastArgs) {
return invokeFunc(time);
}
lastArgs = lastThis = undefined;
return result;
}
function cancel() {
if (timerId !== undefined) {
clearTimeout(timerId);
}
lastInvokeTime = 0;
lastArgs = lastCallTime = lastThis = timerId = undefined;
}
function flush() {
return timerId === undefined ? result : trailingEdge(now());
}
function debounced() {
var time = now(),
isInvoking = shouldInvoke(time);
lastArgs = arguments;
lastThis = this;
lastCallTime = time;
if (isInvoking) {
if (timerId === undefined) {
return leadingEdge(lastCallTime);
}
if (maxing) {
// Handle invocations in a tight loop.
clearTimeout(timerId);
timerId = setTimeout(timerExpired, wait);
return invokeFunc(lastCallTime);
}
}
if (timerId === undefined) {
timerId = setTimeout(timerExpired, wait);
}
return result;
}
debounced.cancel = cancel;
debounced.flush = flush;
return debounced;
}
module.exports = debounce;
/***/ }),
/***/ "b4b0":
/***/ (function(module, exports, __webpack_require__) {
var isObject = __webpack_require__("1a8c"),
isSymbol = __webpack_require__("ffd6");
/** Used as references for various `Number` constants. */
var NAN = 0 / 0;
/** Used to match leading and trailing whitespace. */
var reTrim = /^\s+|\s+$/g;
/** Used to detect bad signed hexadecimal string values. */
var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
/** Used to detect binary string values. */
var reIsBinary = /^0b[01]+$/i;
/** Used to detect octal string values. */
var reIsOctal = /^0o[0-7]+$/i;
/** Built-in method references without a dependency on `root`. */
var freeParseInt = parseInt;
/**
* Converts `value` to a number.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to process.
* @returns {number} Returns the number.
* @example
*
* _.toNumber(3.2);
* // => 3.2
*
* _.toNumber(Number.MIN_VALUE);
* // => 5e-324
*
* _.toNumber(Infinity);
* // => Infinity
*
* _.toNumber('3.2');
* // => 3.2
*/
function toNumber(value) {
if (typeof value == 'number') {
return value;
}
if (isSymbol(value)) {
return NAN;
}
if (isObject(value)) {
var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
value = isObject(other) ? (other + '') : other;
}
if (typeof value != 'string') {
return value === 0 ? value : +value;
}
value = value.replace(reTrim, '');
var isBinary = reIsBinary.test(value);
return (isBinary || reIsOctal.test(value))
? freeParseInt(value.slice(2), isBinary ? 2 : 8)
: (reIsBadHex.test(value) ? NAN : +value);
}
module.exports = toNumber;
/***/ }),
/***/ "c8ba":
/***/ (function(module, exports) {
var g;
// This works in non-strict mode
g = (function() {
return this;
})();
try {
// This works if eval is allowed (see CSP)
g = g || new Function("return this")();
} catch (e) {
// This works if the window reference is available
if (typeof window === "object") g = window;
}
// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}
module.exports = g;
/***/ }),
/***/ "f6d5":
/***/ (function(module, exports, __webpack_require__) {
// style-loader: Adds some css to the DOM by adding a <style> tag
// load the styles
var content = __webpack_require__("88b1");
if(typeof content === 'string') content = [[module.i, content, '']];
if(content.locals) module.exports = content.locals;
// add the styles to the DOM
var add = __webpack_require__("499e").default
var update = add("cfb811d6", content, true, {"sourceMap":false,"shadowMode":false});
/***/ }),
/***/ "fb15":
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
// ESM COMPAT FLAG
__webpack_require__.r(__webpack_exports__);
// CONCATENATED MODULE: ./node_modules/@vue/cli-service/lib/commands/build/setPublicPath.js
// This file is imported into lib/wc client bundles.
if (typeof window !== 'undefined') {
var currentScript = window.document.currentScript
if (true) {
var getCurrentScript = __webpack_require__("8875")
currentScript = getCurrentScript()
// for backward compatibility, because previously we directly included the polyfill
if (!('currentScript' in document)) {
Object.defineProperty(document, 'currentScript', { get: getCurrentScript })
}
}
var src = currentScript && currentScript.src.match(/(.+\/)[^/]+\.js(\?.*)?$/)
if (src) {
__webpack_require__.p = src[1] // eslint-disable-line
}
}
// Indicate to webpack that this file can be concatenated
/* harmony default export */ var setPublicPath = (null);
// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"10e4ab25-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/lib/virtual-list.vue?vue&type=template&id=18eaff34&
var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{ref:"virtualList",staticClass:"virtual-list",on:{"&scroll":function($event){return _vm.getScrollFn($event)}}},[_c('div',{ref:"scrollBar",staticClass:"scroll-bar"}),_c('div',{ref:"scrollList",staticClass:"scroll-list",class:{ 'waterfall-list': _vm.isWaterfall },style:(_vm.transform)},[(_vm.isWaterfall)?[_c('div',{staticClass:"left-wrap",style:({ transform: ("translate3d(0," + _vm.leftOffset + "px,0)") })},_vm._l((_vm.renderLeft),function(item){return _c('div',{key:item.id,staticClass:"left-item",style:(_vm.setStyle(item)),attrs:{"vid":item.id}},[_vm._t("default",null,{"item":item})],2)}),0),_c('div',{staticClass:"right-wrap",style:({ transform: ("translate3d(0," + _vm.rightOffset + "px,0)") })},_vm._l((_vm.renderRight),function(item){return _c('div',{key:item.id,staticClass:"right-item",style:(_vm.setStyle(item)),attrs:{"vid":item.id}},[_vm._t("default",null,{"item":item})],2)}),0)]:_vm._l((_vm.renderData),function(item){return _c('div',{key:item.id,ref:"nodes",refInFor:true,attrs:{"vIndex":item.index}},[_vm._t("default",null,{"item":item})],2)})],2),_vm._t("bottom")],2)}
var staticRenderFns = []
// CONCATENATED MODULE: ./src/lib/virtual-list.vue?vue&type=template&id=18eaff34&
// EXTERNAL MODULE: ./node_modules/lodash/throttle.js
var throttle = __webpack_require__("0f32");
var throttle_default = /*#__PURE__*/__webpack_require__.n(throttle);
// CONCATENATED MODULE: ./src/utils/index.js
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }
function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
var getCurrentIndex = function getCurrentIndex(value, positions) {
var start = 0;
var end = positions.length - 1;
var currentIndex = null;
while (start <= end) {
var middleIndex = Math.floor((start + end) / 2);
var middleValue = positions[middleIndex].bottom;
if (value == middleValue) {
return middleIndex + 1;
} else if (middleValue < value) {
start = middleIndex + 1;
} else if (middleValue > value) {
if (currentIndex == null || currentIndex > middleIndex) {
currentIndex = middleIndex;
}
end = middleIndex - 1;
}
}
return currentIndex;
};
var random = function random(arr) {
var max = Math.max.apply(Math, _toConsumableArray(arr));
var min = Math.min.apply(Math, _toConsumableArray(arr));
var num = Math.random() * (max - min) + min;
return Math.round(num);
};
var virtualType = {
WATERFALL: "waterfall",
FIXED: "fixed",
VARIABLE: "variable"
};
// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/thread-loader/dist/cjs.js!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/lib/virtual-list.vue?vue&type=script&lang=js&
function virtual_listvue_type_script_lang_js_toConsumableArray(arr) { return virtual_listvue_type_script_lang_js_arrayWithoutHoles(arr) || virtual_listvue_type_script_lang_js_iterableToArray(arr) || virtual_listvue_type_script_lang_js_unsupportedIterableToArray(arr) || virtual_listvue_type_script_lang_js_nonIterableSpread(); }
function virtual_listvue_type_script_lang_js_nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function virtual_listvue_type_script_lang_js_unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return virtual_listvue_type_script_lang_js_arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return virtual_listvue_type_script_lang_js_arrayLikeToArray(o, minLen); }
function virtual_listvue_type_script_lang_js_iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }
function virtual_listvue_type_script_lang_js_arrayWithoutHoles(arr) { if (Array.isArray(arr)) return virtual_listvue_type_script_lang_js_arrayLikeToArray(arr); }
function virtual_listvue_type_script_lang_js_arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
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; }
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
/* harmony default export */ var virtual_listvue_type_script_lang_js_ = ({
name: 'lite-virtual-list',
props: {
data: {
type: Array,
required: true,
default: function _default() {
return [];
}
},
// fixed variable waterfall
type: {
type: String,
required: true
},
// 每屏可见的数据条数
remain: {
type: [Number, String],
required: true
},
size: {
type: [Number, String],
required: false
},
// 前后各渲染几屏
screen: {
type: Array,
required: false,
default: function _default() {
return [1, 1];
}
},
//加载更多 触底距离
distance: {
type: [Number, String],
required: false,
default: 50
},
// 截流函数触发间隔
interval: {
type: Number,
required: false,
default: 0
},
virtualHieght: {
type: String,
required: false,
default: '100%'
},
unit: {
type: String,
required: false,
default: 'px'
},
marginBottom: {
type: [Number, String],
required: false,
default: 0
},
deleteId: {
type: [Number, String],
required: false
}
},
data: function data() {
return {
start: 0,
end: 0,
offset: 0,
leftOffset: 0,
rightOffset: 0,
leftStart: 0,
rightStart: 0,
leftEnd: 0,
rightEnd: 0,
leftHeight: 0,
rightHieght: 0,
scrollTop: 0
};
},
computed: {
isWaterfall: function isWaterfall() {
return this.type === virtualType.WATERFALL;
},
transform: function transform() {
if (!this.isWaterfall) {
return {
transform: "translate3d(0,".concat(this.offset, "px,0)")
};
}
return null;
},
renderLeft: function renderLeft() {
return this.waterfallInfo ? this.waterfallInfo.left.slice(this.leftStart - this.leftPrevCount, this.leftEnd + this.leftNextCount) : 0;
},
renderRight: function renderRight() {
return this.waterfallInfo ? this.waterfallInfo.right.slice(this.rightStart - this.rightPrevCount, this.rightEnd + this.rightNextCount) : 0;
},
renderData: function renderData() {
return this.formatData.slice(this.start - this.prevCount, this.end + this.nextCount);
},
formatData: function formatData() {
return this.data.map(function (item, index) {
return _objectSpread(_objectSpread({}, item), {}, {
index: index
});
});
},
prevScreen: function prevScreen() {
return this.remain * this.screen[0];
},
nextScreen: function nextScreen() {
return this.remain * this.screen[1];
},
prevCount: function prevCount() {
return Math.min(this.start, this.prevScreen);
},
leftPrevCount: function leftPrevCount() {
return Math.min(this.leftStart, this.prevScreen);
},
rightPrevCount: function rightPrevCount() {
return Math.min(this.rightStart, this.prevScreen);
},
nextCount: function nextCount() {
return Math.min(this.data.length - this.end, this.nextScreen);
},
leftNextCount: function leftNextCount() {
return this.waterfallInfo ? Math.min(this.waterfallInfo.left.length - this.leftEnd, this.nextScreen) : 0;
},
rightNextCount: function rightNextCount() {
return this.waterfallInfo ? Math.min(this.waterfallInfo.right.length - this.rightEnd, this.nextScreen) : 0;
}
},
watch: {
deleteId: function deleteId(id) {
this.deleteItem(id);
},
data: function data(newData) {
var _this = this;
// 防止组件外部单个item更改状态后触发watch 例
// item.visible = true
// this.$set(this.items, item.id, item)
// if (newData.length === oldData.length) return
var prevLength, newLoadData;
switch (this.type) {
case virtualType.FIXED:
this.$refs.scrollBar.style.height = newData.length * this.size + this.unit;
break;
case virtualType.VARIABLE:
prevLength = this.variableData.length;
newLoadData = newData.slice(prevLength); // pushData 此数据并没有偏移量 页面通过renderData更新之后 会触发update 在updated中通过渲染的节点会主动更新后面数据的偏移量
this.variableData = [].concat(virtual_listvue_type_script_lang_js_toConsumableArray(this.variableData), virtual_listvue_type_script_lang_js_toConsumableArray(this.getVisiblePosition(newLoadData)));
break;
case virtualType.WATERFALL:
prevLength = this.waterfallInfo.left.length + this.waterfallInfo.right.length;
newLoadData = newData.slice(prevLength);
this.handleWaterfallData(newLoadData);
break;
} // 当滚动时未触发回弹时会造成$emit('scroll')事件不执行 会导致懒加载处理的dom时获取到的是老数据
this.$nextTick(function () {
_this.$emit('domUpdateSuccess', _this.type === virtualType.WATERFALL ? {
renderLeftData: _this.renderLeft,
renderRightData: _this.renderRight
} : _this.renderData);
_this.emitScrollEvent();
});
}
},
created: function created() {
if (this.type === virtualType.WATERFALL) {
this.waterfallInfo = {
left: [],
right: []
};
}
this.getScrollFn = throttle_default()(this.handleScroll, this.interval, {
leading: false
});
},
mounted: function mounted() {
if (this.type !== virtualType.WATERFALL) {
if (!this.size) {