zarm-web/lib/utils/collapseTransition.js

基于 React 的桌面端UI库

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _react = _interopRequireWildcard(require("react"));

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; if (obj != null) { var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var percent = 0.06;

var CollapseTransition =
/*#__PURE__*/
function (_Component) {
  _inherits(CollapseTransition, _Component);

  function CollapseTransition() {
    var _getPrototypeOf2;

    var _this;

    _classCallCheck(this, CollapseTransition);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _possibleConstructorReturn(this, (_getPrototypeOf2 = _getPrototypeOf(CollapseTransition)).call.apply(_getPrototypeOf2, [this].concat(args)));
    _this.collapseWrap = (0, _react.createRef)();
    return _this;
  }

  _createClass(CollapseTransition, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      var visible = this.props.visible;
      this.beforeEnter();

      if (visible) {
        this.enter();
      }
    }
  }, {
    key: "componentDidUpdate",
    value: function componentDidUpdate(props) {
      var visible = this.props.visible;
      if (visible !== props.visible) this.triggerChange(visible);
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      this.beforeLeave();
      this.leave();
    }
  }, {
    key: "triggerChange",
    value: function triggerChange(visible) {
      if (visible) {
        this.beforeEnter();
        this.enter();
      } else {
        this.beforeLeave();
        this.leave();
      }
    }
  }, {
    key: "beforeEnter",
    value: function beforeEnter() {
      var el = this.collapseWrap.current;
      el.dataset.oldPaddingTop = el.style.paddingTop;
      el.dataset.oldPaddingBottom = el.style.paddingBottom;
      el.dataset.oldOverflow = el.style.overflow;
      el.style.height = 0;
      el.style.paddingTop = 0;
      el.style.paddingBottom = 0;
    }
  }, {
    key: "enter",
    value: function enter() {
      var _this2 = this;

      var el = this.collapseWrap.current;
      var tempHeight = 0;
      var tempPaddingTop = 0;
      var tempPaddingBottom = 0;
      el.style.display = 'block';

      function step(context) {
        tempHeight = Math.min(el.scrollHeight, tempHeight += el.scrollHeight * percent);
        tempPaddingTop = Math.min(el.dataset.oldPaddingTop, tempPaddingTop += el.dataset.oldPaddingTop * percent);
        tempPaddingBottom = Math.min(el.dataset.oldPaddingBottom, tempPaddingBottom += el.dataset.oldPaddingBottom * percent);
        el.style.height = "".concat(tempHeight, "px");
        el.style.paddingTop = tempPaddingTop;
        el.style.paddingBottom = tempPaddingBottom;

        if (tempHeight < el.scrollHeight) {
          requestAnimationFrame(function () {
            step(context);
          });
        } else {
          context.afterEnter();
        }
      }

      requestAnimationFrame(function () {
        step(_this2);
      });
      el.style.overflow = 'hidden';
    }
  }, {
    key: "afterEnter",
    value: function afterEnter() {
      var el = this.collapseWrap.current;
      el.style.display = 'block';
      el.style.height = '';
      el.style.overflow = el.dataset.oldOverflow;
    }
  }, {
    key: "beforeLeave",
    value: function beforeLeave() {
      var el = this.collapseWrap.current;
      el.dataset.oldPaddingTop = el.style.paddingTop;
      el.dataset.oldPaddingBottom = el.style.paddingBottom;
      el.dataset.oldOverflow = el.style.overflow;
      el.style.display = 'block';

      if (el.scrollHeight !== 0) {
        el.style.height = "".concat(el.scrollHeight, "px");
      }

      el.style.overflow = 'hidden';
    }
  }, {
    key: "leave",
    value: function leave() {
      var _this3 = this;

      var el = this.collapseWrap.current;
      var tempHeight = el.scrollHeight;
      var tempPaddingTop = el.dataset.oldPaddingTop;
      var tempPaddingBottom = el.dataset.oldPaddingBottom;

      function step(context) {
        tempHeight = Math.max(0, tempHeight -= el.scrollHeight * percent);
        tempPaddingTop = Math.max(0, tempPaddingTop -= el.dataset.oldPaddingTop * percent);
        tempPaddingBottom = Math.max(0, tempPaddingBottom -= el.dataset.oldPaddingBottom * percent);
        el.style.height = "".concat(tempHeight, "px");
        el.style.paddingTop = tempPaddingTop;
        el.style.paddingBottom = tempPaddingBottom;

        if (tempHeight !== 0) {
          requestAnimationFrame(function () {
            step(context);
          });
        } else {
          context.afterLeave();
        }
      }

      requestAnimationFrame(function () {
        step(_this3);
      });
    }
  }, {
    key: "afterLeave",
    value: function afterLeave() {
      var el = this.collapseWrap.current;
      if (!el) return;
      el.style.display = 'none';
      el.style.height = '';
      el.style.overflow = el.dataset.oldOverflow;
      el.style.paddingTop = el.dataset.oldPaddingTop;
      el.style.paddingBottom = el.dataset.oldPaddingBottom;
    }
  }, {
    key: "render",
    value: function render() {
      var children = this.props.children;
      return _react.default.createElement("div", {
        className: "collapse-transition",
        ref: this.collapseWrap,
        style: {
          overflow: 'hidden'
        }
      }, children);
    }
  }]);

  return CollapseTransition;
}(_react.Component);

exports.default = CollapseTransition;