a-virtual-table
Version:
The virtual scrolling component developed based on the Table component of Ant Design supports dynamic height and solves the problem of scrolling stuck when the amount of data is large.
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JavaScript
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('ant-design-vue/lib/checkbox'), require('ant-design-vue/lib/table'), require('ant-design-vue')) :
typeof define === 'function' && define.amd ? define(['exports', 'ant-design-vue/lib/checkbox', 'ant-design-vue/lib/table', 'ant-design-vue'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global["a-virtual-table"] = {}, global.Checkbox, global.Table, global.antDesignVue));
})(this, (function (exports, Checkbox, Table, antDesignVue) { 'use strict';
function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
var Checkbox__default = /*#__PURE__*/_interopDefaultLegacy(Checkbox);
var Table__default = /*#__PURE__*/_interopDefaultLegacy(Table);
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function values(iterable) {
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if ("function" == typeof iterable.next) return iterable;
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return next.value = undefined, next.done = !0, next;
};
return next.next = next;
}
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return {
next: doneResult
};
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function doneResult() {
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value: undefined,
done: !0
};
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return GeneratorFunction.prototype = GeneratorFunctionPrototype, defineProperty(Gp, "constructor", {
value: GeneratorFunctionPrototype,
configurable: !0
}), defineProperty(GeneratorFunctionPrototype, "constructor", {
value: GeneratorFunction,
configurable: !0
}), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, "GeneratorFunction"), exports.isGeneratorFunction = function (genFun) {
var ctor = "function" == typeof genFun && genFun.constructor;
return !!ctor && (ctor === GeneratorFunction || "GeneratorFunction" === (ctor.displayName || ctor.name));
}, exports.mark = function (genFun) {
return Object.setPrototypeOf ? Object.setPrototypeOf(genFun, GeneratorFunctionPrototype) : (genFun.__proto__ = GeneratorFunctionPrototype, define(genFun, toStringTagSymbol, "GeneratorFunction")), genFun.prototype = Object.create(Gp), genFun;
}, exports.awrap = function (arg) {
return {
__await: arg
};
}, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
return this;
}), exports.AsyncIterator = AsyncIterator, exports.async = function (innerFn, outerFn, self, tryLocsList, PromiseImpl) {
void 0 === PromiseImpl && (PromiseImpl = Promise);
var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList), PromiseImpl);
return exports.isGeneratorFunction(outerFn) ? iter : iter.next().then(function (result) {
return result.done ? result.value : iter.next();
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};
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function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
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resolve(value);
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Promise.resolve(value).then(_next, _throw);
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function _asyncToGenerator(fn) {
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var self = this,
args = arguments;
return new Promise(function (resolve, reject) {
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function _next(value) {
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function _throw(err) {
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}
function _slicedToArray(arr, i) {
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function _toConsumableArray(arr) {
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function _arrayLikeToArray(arr, len) {
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return arr2;
}
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 _nonIterableRest() {
throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
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);
}
/**
* 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');
}
var isObject_1 = isObject;
var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
/** Detect free variable `global` from Node.js. */
var freeGlobal = typeof commonjsGlobal == 'object' && commonjsGlobal && commonjsGlobal.Object === Object && commonjsGlobal;
var _freeGlobal = freeGlobal;
/** 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')();
var _root = root;
/**
* 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();
};
var now_1 = now;
/** Used to match a single whitespace character. */
var reWhitespace = /\s/;
/**
* Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace
* character of `string`.
*
* @private
* @param {string} string The string to inspect.
* @returns {number} Returns the index of the last non-whitespace character.
*/
function trimmedEndIndex(string) {
var index = string.length;
while (index-- && reWhitespace.test(string.charAt(index))) {}
return index;
}
var _trimmedEndIndex = trimmedEndIndex;
/** Used to match leading whitespace. */
var reTrimStart = /^\s+/;
/**
* The base implementation of `_.trim`.
*
* @private
* @param {string} string The string to trim.
* @returns {string} Returns the trimmed string.
*/
function baseTrim(string) {
return string
? string.slice(0, _trimmedEndIndex(string) + 1).replace(reTrimStart, '')
: string;
}
var _baseTrim = baseTrim;
/** Built-in value references. */
var Symbol$1 = _root.Symbol;
var _Symbol = Symbol$1;
/** Used for built-in method references. */
var objectProto$1 = Object.prototype;
/** Used to check objects for own properties. */
var hasOwnProperty = objectProto$1.hasOwnProperty;
/**
* Used to resolve the
* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
* of values.
*/
var nativeObjectToString$1 = objectProto$1.toString;
/** Built-in value references. */
var symToStringTag$1 = _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$1),
tag = value[symToStringTag$1];
try {
value[symToStringTag$1] = undefined;
var unmasked = true;
} catch (e) {}
var result = nativeObjectToString$1.call(value);
if (unmasked) {
if (isOwn) {
value[symToStringTag$1] = tag;
} else {
delete value[symToStringTag$1];
}
}
return result;
}
var _getRawTag = getRawTag;
/** 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);
}
var _objectToString = objectToString;
/** `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);
}
var _baseGetTag = baseGetTag;
/**
* 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';
}
var isObjectLike_1 = isObjectLike;
/** `Object#toString` result references. */
var symbolTag = '[object Symbol]';
/**
* Checks if `value` is classified as a `Symbol` primitive or object.
*
* @static
* @memberOf _
* @since 4.0.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
* @example
*
* _.isSymbol(Symbol.iterator);
* // => true
*
* _.isSymbol('abc');
* // => false
*/
function isSymbol(value) {
return typeof value == 'symbol' ||
(isObjectLike_1(value) && _baseGetTag(value) == symbolTag);
}
var isSymbol_1 = isSymbol;
/** Used as references for various `Number` constants. */
var NAN = 0 / 0;
/** 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_1(value)) {
return NAN;
}
if (isObject_1(value)) {
var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
value = isObject_1(other) ? (other + '') : other;
}
if (typeof value != 'string') {
return value === 0 ? value : +value;
}
value = _baseTrim(value);
var isBinary = reIsBinary.test(value);
return (isBinary || reIsOctal.test(value))
? freeParseInt(value.slice(2), isBinary ? 2 : 8)
: (reIsBadHex.test(value) ? NAN : +value);
}
var toNumber_1 = toNumber;
/** Error message constants. */
var FUNC_ERROR_TEXT$1 = '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$1);
}
wait = toNumber_1(wait) || 0;
if (isObject_1(options)) {
leading = !!options.leading;
maxing = 'maxWait' in options;
maxWait = maxing ? nativeMax(toNumber_1(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_1();
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_1());
}
function debounced() {
var time = now_1(),
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;
}
var debounce_1 = debounce;
/** 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_1(options)) {
leading = 'leading' in options ? !!options.leading : leading;
trailing = 'trailing' in options ? !!options.trailing : trailing;
}
return debounce_1(func, wait, {
'leading': leading,
'maxWait': wait,
'trailing': trailing
});
}
var throttle_1 = throttle;
// 判断是否是滚动容器
function isScroller(el) {
var style = window.getComputedStyle(el, null);
var scrollValues = ['auto', 'scroll'];
return scrollValues.includes(style.overflow) || scrollValues.includes(style['overflow-y']);
}
// 获取父层滚动容器
function getParentScroller(el) {
var parent = el;
while (parent) {
if ([window, document, document.documentElement].includes(parent)) {
return window;
}
if (isScroller(parent)) {
return parent;
}
parent = parent.parentNode;
}
return parent || window;
}
// 获取容器滚动位置
function getScrollTop(el) {
return el === window ? window.pageYOffset : el.scrollTop;
}
// 获取容器滚动位置
function getScrollLeft(el) {
return el === window ? window.pageXOffset : el.scrollLeft;
}
// 设置容器滚动位置
function setScrollTop(el, pos) {
return el === window ? window.scroll(window.pageXOffset, pos) : el.scrollTop = pos;
}
// 设置容器滚动位置
function setScrollLeft(el, pos) {
return el === window ? window.scroll(pos, window.pageYOffset) : el.scrollLeft = pos;
}
// 获取容器高度
function getOffsetHeight(el) {
return el === window ? window.innerHeight : el.offsetHeight;
}
// 滚动到某个位置
function scrollToY(el, y) {
if (el === window) {
window.scroll(0, y);
} else {
el.scrollTop = y;
}
}
// 判断dom是否有x轴滚动条
function hasScrollX(el) {
return el.scrollWidth > el.clientWidth;
}
// 表格body class名称
var TableBodyClassNames = ['.ant-table-scroll .ant-table-body', '.ant-table-fixed-left .ant-table-body-inner', '.ant-table-fixed-right .ant-table-body-inner'];
var checkOrder = 0; // 多选：记录多选选项改变的顺序
var script$1 = {
inheritAttrs: false,
name: 'a-virtual-table',
components: {
ACheckbox: Checkbox__default["default"],
ATable: Table__default["default"]
},
props: {
dataSource: {
type: Array,
"default": function _default() {
return [];
}
},
columns: {
type: Array,
"default": function _default() {
return [];
}
},
// key值，data数据中的唯一id
keyProp: {
type: String,
"default": 'id'
},
// 每一行的预估高度
itemSize: {
type: Number,
"default": 60
},
// 指定滚动容器
scrollBox: {
type: String
},
// 顶部和底部缓冲区域，值越大显示表格的行数越多
buffer: {
type: Number,
"default": 100
},
// 滚动事件的节流时间
throttleTime: {
type: Number,
"default": 10
},
// 是否获取表格行动态高度
dynamic: {
type: Boolean,
"default": true
},
// 是否开启虚拟滚动
virtualized: {
type: Boolean,
"default": true
},
// 是否是树形结构
isTree: {
type: Boolean,
"default": false
}
},
provide: function provide() {
return {
virtualTable: this
};
},
data: function data() {
return {
start: 0,
end: undefined,
sizes: {},
// 尺寸映射（依赖响应式）
renderData: [],
// 兼容多选
isCheckedAll: false,
// 全选
isCheckedImn: false,
// 控制半选样式
isHideAppend: false
};
},
computed: {
tableColumns: function tableColumns() {
var _this = this;
var h = this.$createElement;
return this.columns.map(function (column) {
// 兼容多选
if (column.type === 'selection') {
return _objectSpread2({
title: function title() {
return h("a-checkbox", {
"attrs": {
"checked": _this.isCheckedAll,
"indeterminate": _this.isCheckedImn
},
"on": {
"change": function change() {
return _this.onCheckAllRows(!_this.isCheckedAll);
}
}
});
},
customRender: function customRender(text, row) {
return h("a-checkbox", {
"attrs": {
"checked": row.$v_checked
},
"on": {
"change": function change() {
return _this.onCheckRow(row, !row.$v_checked);
}
}
});
},
width: 60
}, column);
} else if (column.index) {
// 兼容索引
return _objectSpread2({
customRender: function customRender(text, row, index) {
var curIndex = _this.start + index;
return typeof column.index === 'function' ? column.index(curIndex) : curIndex + 1;
}
}, column);
}
return column;
});
},
// 计算出每个item（的key值）到滚动容器顶部的距离
offsetMap: function offsetMap(_ref) {
var keyProp = _ref.keyProp,
itemSize = _ref.itemSize,
sizes = _ref.sizes,
dataSource = _ref.dataSource;
if (!this.dynamic) return {};
var res = {};
var total = 0;
for (var i = 0; i < dataSource.length; i++) {
var key = dataSource[i][keyProp];
res[key] = total;
var curSize = sizes[key];
var size = typeof curSize === 'number' ? curSize : itemSize;
total += size;
}
return res;
}
},
methods: {
getSlotValue: function getSlotValue(text, record, index) {
if (_typeof(text) === 'object' && text.selectedKeys) {
console.log('text', text);
return text;
}
for (var _len = arguments.length, rest = new Array(_len > 3 ? _len - 3 : 0), _key = 3; _key < _len; _key++) {
rest[_key - 3] = arguments[_key];
}
return typeof record === 'number' ? _objectSpread2({
record: text,
index: record,
$index: this.start + record
}, rest) : _objectSpread2({
text: text,
record: record,
index: index,
$index: this.start + index
}, rest);
},
// 初始化数据
initData: function initData() {
var _this2 = this;
// 是否是表格内部滚动
this.isInnerScroll = false;
// 滚动容器滚动位置【0-滚动容器top；1-滚动容器left；2-表格滚动容器top；3-表格滚动容器left】
this.scrollPos = [0, 0, 0, 0];
// 组件是否deactivated状态
this.isDeactivated = false;
this.scroller = this.getScroller();
this.setToTop();
this.recordTablePos();
// 首次需要执行2次handleScroll：因为第一次计算renderData时表格高度未确认导致计算不准确；第二次执行时，表格高度确认后，计算renderData是准确的
this.handleScroll();
this.$nextTick(function () {
_this2.handleScroll();
});
// 监听事件
this.onScroll = throttle_1(this.handleScroll, this.throttleTime);
this.scroller.addEventListener('scroll', this.onScroll, {
passive: true
});
window.addEventListener('resize', this.onScroll);
},
// 设置表格到滚动容器的距离
setToTop: function setToTop() {
if (this.isInnerScroll) {
this.toTop = 0;
} else {
this.toTop = this.$el.getBoundingClientRect().top - (this.scroller === window ? 0 : this.scroller.getBoundingClientRect().top) + getScrollTop(this.scroller);
}
},
// 获取滚动元素
getScroller: function getScroller() {
var el;
if (this.scrollBox) {
if (this.scrollBox === 'window' || this.scrollBox === window) return window;
el = document.querySelector(this.scrollBox);
if (!el) throw new Error(" scrollBox prop: '".concat(this.scrollBox, "' is not a valid selector"));
if (!isScroller(el)) console.warn("Warning! scrollBox prop: '".concat(this.scrollBox, "' is not a scroll element"));
return el;
}
// 如果表格是固定高度，则获取表格内的滚动节点，否则获取父层滚动节点
if (this.$attrs.scroll && this.$attrs.scroll.y) {
this.isInnerScroll = true;
return this.$el.querySelector('.ant-table-body');
} else {
return getParentScroller(this.$el);
}
},
// 处理滚动事件
handleScroll: function handleScroll() {
// 如果组件失活，则不再执行handleScroll；否则外部容器滚动情况下记录的scrollTop会是0
if (this.isDeactivated) return;
// 记录scrollPos
this.scrollPos[0] = getScrollTop(this.scroller);
this.scrollPos[1] = getScrollLeft(this.scroller);
if (!this.virtualized) return;
// 更新当前尺寸（高度）
this.updateSizes();
// 计算renderData
this.calcRenderData();
// 计算位置
this.calcPosition();
},
// 更新尺寸（高度）
updateSizes: function updateSizes() {
var _this3 = this;
if (!this.dynamic) return;
var rows = [];
if (this.isTree) {
// 处理树形表格，筛选出一级树形结构
rows = this.$el.querySelectorAll('.ant-table-body .ant-table-row-level-0');
} else {
rows = this.$el.querySelectorAll('.ant-table-body .ant-table-tbody .ant-table-row');
}
Array.from(rows).forEach(function (row, index) {
var item = _this3.renderData[index];
if (!item) return;
// 计算表格行的高度
var offsetHeight = row.offsetHeight;
// 表格行如果有扩展行，需要加上扩展内容的高度
var nextEl = row.nextSibling;
if (nextEl && nextEl.classList && nextEl.classList.contains('ant-table-expanded-row')) {
offsetHeight += row.nextSibling.offsetHeight;
}
// 表格行如果有子孙节点，需要加上子孙节点的高度
if (_this3.isTree) {
var next = row.nextSibling;
while (next && next !== rows[index + 1]) {
var _next;
offsetHeight += ((_next = next) === null || _next === void 0 ? void 0 : _next.offsetHeight) || 0;
next = next.nextSibling;
}
}
var key = item[_this3.keyProp];
if (_this3.sizes[key] !== offsetHeight) {
_this3.$set(_this3.sizes, key, offsetHeight);
row._offsetHeight = offsetHeight;
}
});
},
// 计算只在视图上渲染的数据
calcRenderData: function calcRenderData() {
var scroller = this.scroller,
buffer = this.buffer,
data = this.dataSource;
// 计算可视范围顶部、底部
var top = this.scrollPos[0] - buffer - this.toTop;
var scrollerHeight = this.isInnerScroll ? this.$attrs.scroll.y : getOffsetHeight(scroller);
var bottom = this.scrollPos[0] + scrollerHeight + buffer - this.toTop;
var start;
var end;
if (!this.dynamic) {
start = top <= 0 ? 0 : Math.floor(top / this.itemSize);
end = bottom <= 0 ? 0 : Math.ceil(bottom / this.itemSize);
} else {
// 二分法计算可视范围内的开始的第一个内容
var l = 0;
var r = data.length - 1;
var mid = 0;
while (l <= r) {
mid = Math.floor((l + r) / 2);
var midVal = this.getItemOffsetTop(mid);
if (midVal < top) {
var midNextVal = this.getItemOffsetTop(mid + 1);
if (midNextVal > top) break;
l = mid + 1;
} else {
r = mid - 1;
}
}
// 计算渲染内容的开始、结束索引
start = mid;
end = data.length - 1;
for (var i = start + 1; i < data.length; i++) {
var offsetTop = this.getItemOffsetTop(i);
if (offsetTop >= bottom) {
end = i;
break;
}
}
}
// 开始索引始终保持偶数，如果为奇数，则加1使其保持偶数【确保表格行的偶数数一致，不会导致斑马纹乱序显示】
if (start % 2) {
start = start - 1;
}
this.top = top;
this.bottom = bottom;
this.start = start;
this.end = end;
this.renderData = data.slice(start, end + 1);
this.$emit('change', this.renderData, this.start, this.end);
},
// 计算位置