primereact
Version:
PrimeReact is an open source UI library for React featuring a rich set of 90+ components, a theme designer, various theme alternatives such as Material, Bootstrap, Tailwind, premium templates and professional support. In addition, it integrates with Prime
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JavaScript
this.primereact = this.primereact || {};
this.primereact.datascroller = (function (exports, React, api, hooks, utils) {
'use strict';
function _interopNamespace(e) {
if (e && e.__esModule) return e;
var n = Object.create(null);
if (e) {
Object.keys(e).forEach(function (k) {
if (k !== 'default') {
var d = Object.getOwnPropertyDescriptor(e, k);
Object.defineProperty(n, k, d.get ? d : {
enumerable: true,
get: function () { return e[k]; }
});
}
});
}
n["default"] = e;
return Object.freeze(n);
}
var React__namespace = /*#__PURE__*/_interopNamespace(React);
function _extends() {
_extends = Object.assign ? Object.assign.bind() : function (target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i];
for (var key in source) {
if (Object.prototype.hasOwnProperty.call(source, key)) {
target[key] = source[key];
}
}
}
return target;
};
return _extends.apply(this, arguments);
}
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;
}
function _arrayWithoutHoles(arr) {
if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}
function _iterableToArray(iter) {
if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}
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 _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 _toConsumableArray(arr) {
return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}
function _arrayWithHoles(arr) {
if (Array.isArray(arr)) return arr;
}
function _iterableToArrayLimit(arr, i) {
var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"];
if (null != _i) {
var _s,
_e,
_x,
_r,
_arr = [],
_n = !0,
_d = !1;
try {
if (_x = (_i = _i.call(arr)).next, 0 === i) {
if (Object(_i) !== _i) return;
_n = !1;
} else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0);
} catch (err) {
_d = !0, _e = err;
} finally {
try {
if (!_n && null != _i["return"] && (_r = _i["return"](), Object(_r) !== _r)) return;
} finally {
if (_d) throw _e;
}
}
return _arr;
}
}
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 _slicedToArray(arr, i) {
return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
}
var DataScrollerBase = {
defaultProps: {
__TYPE: 'DataScroller',
id: null,
value: null,
rows: 0,
inline: false,
scrollHeight: null,
loader: false,
buffer: 0.9,
style: null,
className: null,
onLazyLoad: null,
emptyMessage: null,
itemTemplate: null,
header: null,
footer: null,
lazy: false,
children: undefined
},
getProps: function getProps(props) {
return utils.ObjectUtils.getMergedProps(props, DataScrollerBase.defaultProps);
},
getOtherProps: function getOtherProps(props) {
return utils.ObjectUtils.getDiffProps(props, DataScrollerBase.defaultProps);
}
};
var DataScroller = /*#__PURE__*/React__namespace.memo( /*#__PURE__*/React__namespace.forwardRef(function (inProps, ref) {
var props = DataScrollerBase.getProps(inProps);
var _React$useState = React__namespace.useState([]),
_React$useState2 = _slicedToArray(_React$useState, 2),
dataToRenderState = _React$useState2[0],
setDataToRenderState = _React$useState2[1];
var elementRef = React__namespace.useRef(null);
var contentRef = React__namespace.useRef(null);
var value = React__namespace.useRef(props.value);
var dataToRender = React__namespace.useRef([]);
var first = React__namespace.useRef(0);
var scrollFunction = React__namespace.useRef(null);
var handleDataChange = function handleDataChange() {
if (props.lazy) {
dataToRender.current = value.current;
setDataToRenderState(_toConsumableArray(dataToRender.current));
} else {
load();
}
};
var load = function load() {
if (props.lazy) {
if (props.onLazyLoad) {
props.onLazyLoad(createLazyLoadMetadata());
}
first.current += props.rows;
} else {
if (value.current) {
for (var i = first.current; i < first.current + props.rows; i++) {
if (i >= value.current.length) {
break;
}
dataToRender.current.push(value.current[i]);
}
if (value.current.length !== 0) {
first.current += props.rows;
}
setDataToRenderState(_toConsumableArray(dataToRender.current));
}
}
};
var reset = function reset() {
first.current = 0;
dataToRender.current = [];
setDataToRenderState(_toConsumableArray(dataToRender.current));
load();
};
var createLazyLoadMetadata = function createLazyLoadMetadata() {
return {
first: first.current,
rows: props.rows
};
};
var bindScrollListener = function bindScrollListener() {
if (props.inline) {
scrollFunction.current = function () {
var scrollTop = contentRef.current.scrollTop,
scrollHeight = contentRef.current.scrollHeight,
viewportHeight = contentRef.current.clientHeight;
if (scrollTop >= scrollHeight * props.buffer - viewportHeight) {
load();
}
};
contentRef.current.addEventListener('scroll', scrollFunction.current);
} else {
scrollFunction.current = function () {
var docBody = document.body,
docElement = document.documentElement,
scrollTop = window.pageYOffset || document.documentElement.scrollTop,
winHeight = docElement.clientHeight,
docHeight = Math.max(docBody.scrollHeight, docBody.offsetHeight, winHeight, docElement.scrollHeight, docElement.offsetHeight);
if (scrollTop >= docHeight * props.buffer - winHeight) {
load();
}
};
window.addEventListener('scroll', scrollFunction.current);
}
};
var unbindScrollListener = function unbindScrollListener() {
if (scrollFunction.current) {
if (props.inline && contentRef.current) {
contentRef.current.removeEventListener('scroll', scrollFunction.current);
} else if (!props.loader) {
window.removeEventListener('scroll', scrollFunction.current);
}
}
scrollFunction.current = null;
};
hooks.useMountEffect(function () {
load();
if (!props.loader) {
bindScrollListener();
}
});
hooks.useUpdateEffect(function () {
if (props.value) {
value.current = props.value;
if (!props.lazy) {
first.current = 0;
}
dataToRender.current = [];
handleDataChange();
}
}, [props.value]);
hooks.useUpdateEffect(function () {
if (props.loader) {
unbindScrollListener();
}
}, [props.loader]);
hooks.useUnmountEffect(function () {
if (scrollFunction.current) {
unbindScrollListener();
}
});
React__namespace.useImperativeHandle(ref, function () {
return {
props: props,
load: load,
reset: reset,
getElement: function getElement() {
return elementRef.current;
},
getContent: function getContent() {
return contentRef.current;
}
};
});
var createHeader = function createHeader() {
if (props.header) {
return /*#__PURE__*/React__namespace.createElement("div", {
className: "p-datascroller-header"
}, props.header);
}
return null;
};
var createFooter = function createFooter() {
if (props.footer) {
return /*#__PURE__*/React__namespace.createElement("div", {
className: "p-datascroller-footer"
}, props.footer);
}
return null;
};
var createItem = function createItem(_value, index) {
var content = props.itemTemplate ? props.itemTemplate(_value) : _value;
return /*#__PURE__*/React__namespace.createElement("li", {
key: index + '_datascrollitem'
}, content);
};
var createEmptyMessage = function createEmptyMessage() {
var content = utils.ObjectUtils.getJSXElement(props.emptyMessage, props) || api.localeOption('emptyMessage');
return /*#__PURE__*/React__namespace.createElement("li", null, content);
};
var createContent = function createContent() {
var content = utils.ObjectUtils.isNotEmpty(dataToRenderState) ? dataToRenderState.map(createItem) : createEmptyMessage();
return /*#__PURE__*/React__namespace.createElement("div", {
ref: contentRef,
className: "p-datascroller-content",
style: {
maxHeight: props.scrollHeight
}
}, /*#__PURE__*/React__namespace.createElement("ul", {
className: "p-datascroller-list"
}, content));
};
var otherProps = DataScrollerBase.getOtherProps(props);
var className = utils.classNames('p-datascroller p-component', props.className, {
'p-datascroller-inline': props.inline
});
var header = createHeader();
var footer = createFooter();
var content = createContent();
return /*#__PURE__*/React__namespace.createElement("div", _extends({
id: props.id,
ref: elementRef,
className: className
}, otherProps), header, content, footer);
}));
DataScroller.displayName = 'DataScroller';
exports.DataScroller = DataScroller;
Object.defineProperty(exports, '__esModule', { value: true });
return exports;
})({}, React, primereact.api, primereact.hooks, primereact.utils);