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InternshipProject/node_modules/rc-virtual-list/lib/ScrollBar.js

293 lines
12 KiB

"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; 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); }
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var React = _interopRequireWildcard(require("react"));
var _classnames = _interopRequireDefault(require("classnames"));
var _raf = _interopRequireDefault(require("rc-util/lib/raf"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && 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 _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; }
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 _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); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } 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 _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
var MIN_SIZE = 20;
function getPageY(e) {
return 'touches' in e ? e.touches[0].pageY : e.pageY;
}
var ScrollBar = /*#__PURE__*/function (_React$Component) {
_inherits(ScrollBar, _React$Component);
var _super = _createSuper(ScrollBar);
function ScrollBar() {
var _this;
_classCallCheck(this, ScrollBar);
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
_this = _super.call.apply(_super, [this].concat(args));
_this.moveRaf = null;
_this.scrollbarRef = /*#__PURE__*/React.createRef();
_this.thumbRef = /*#__PURE__*/React.createRef();
_this.visibleTimeout = null;
_this.state = {
dragging: false,
pageY: null,
startTop: null,
visible: false
};
_this.delayHidden = function () {
clearTimeout(_this.visibleTimeout);
_this.setState({
visible: true
});
_this.visibleTimeout = setTimeout(function () {
_this.setState({
visible: false
});
}, 2000);
};
_this.onScrollbarTouchStart = function (e) {
e.preventDefault();
};
_this.onContainerMouseDown = function (e) {
e.stopPropagation();
e.preventDefault();
};
_this.patchEvents = function () {
window.addEventListener('mousemove', _this.onMouseMove);
window.addEventListener('mouseup', _this.onMouseUp);
_this.thumbRef.current.addEventListener('touchmove', _this.onMouseMove);
_this.thumbRef.current.addEventListener('touchend', _this.onMouseUp);
};
_this.removeEvents = function () {
window.removeEventListener('mousemove', _this.onMouseMove);
window.removeEventListener('mouseup', _this.onMouseUp);
_this.scrollbarRef.current.removeEventListener('touchstart', _this.onScrollbarTouchStart);
_this.thumbRef.current.removeEventListener('touchstart', _this.onMouseDown);
_this.thumbRef.current.removeEventListener('touchmove', _this.onMouseMove);
_this.thumbRef.current.removeEventListener('touchend', _this.onMouseUp);
_raf.default.cancel(_this.moveRaf);
};
_this.onMouseDown = function (e) {
var onStartMove = _this.props.onStartMove;
_this.setState({
dragging: true,
pageY: getPageY(e),
startTop: _this.getTop()
});
onStartMove();
_this.patchEvents();
e.stopPropagation();
e.preventDefault();
};
_this.onMouseMove = function (e) {
var _this$state = _this.state,
dragging = _this$state.dragging,
pageY = _this$state.pageY,
startTop = _this$state.startTop;
var onScroll = _this.props.onScroll;
_raf.default.cancel(_this.moveRaf);
if (dragging) {
var offsetY = getPageY(e) - pageY;
var newTop = startTop + offsetY;
var enableScrollRange = _this.getEnableScrollRange();
var enableHeightRange = _this.getEnableHeightRange();
var ptg = enableHeightRange ? newTop / enableHeightRange : 0;
var newScrollTop = Math.ceil(ptg * enableScrollRange);
_this.moveRaf = (0, _raf.default)(function () {
onScroll(newScrollTop);
});
}
};
_this.onMouseUp = function () {
var onStopMove = _this.props.onStopMove;
_this.setState({
dragging: false
});
onStopMove();
_this.removeEvents();
};
_this.getSpinHeight = function () {
var _this$props = _this.props,
height = _this$props.height,
count = _this$props.count;
var baseHeight = height / count * 10;
baseHeight = Math.max(baseHeight, MIN_SIZE);
baseHeight = Math.min(baseHeight, height / 2);
return Math.floor(baseHeight);
};
_this.getEnableScrollRange = function () {
var _this$props2 = _this.props,
scrollHeight = _this$props2.scrollHeight,
height = _this$props2.height;
return scrollHeight - height || 0;
};
_this.getEnableHeightRange = function () {
var height = _this.props.height;
var spinHeight = _this.getSpinHeight();
return height - spinHeight || 0;
};
_this.getTop = function () {
var scrollTop = _this.props.scrollTop;
var enableScrollRange = _this.getEnableScrollRange();
var enableHeightRange = _this.getEnableHeightRange();
if (scrollTop === 0 || enableScrollRange === 0) {
return 0;
}
var ptg = scrollTop / enableScrollRange;
return ptg * enableHeightRange;
};
_this.showScroll = function () {
var _this$props3 = _this.props,
height = _this$props3.height,
scrollHeight = _this$props3.scrollHeight;
return scrollHeight > height;
};
return _this;
}
_createClass(ScrollBar, [{
key: "componentDidMount",
value: function componentDidMount() {
this.scrollbarRef.current.addEventListener('touchstart', this.onScrollbarTouchStart);
this.thumbRef.current.addEventListener('touchstart', this.onMouseDown);
}
}, {
key: "componentDidUpdate",
value: function componentDidUpdate(prevProps) {
if (prevProps.scrollTop !== this.props.scrollTop) {
this.delayHidden();
}
}
}, {
key: "componentWillUnmount",
value: function componentWillUnmount() {
this.removeEvents();
clearTimeout(this.visibleTimeout);
}
}, {
key: "render",
value: // ====================== Render =======================
function render() {
var _this$state2 = this.state,
dragging = _this$state2.dragging,
visible = _this$state2.visible;
var prefixCls = this.props.prefixCls;
var spinHeight = this.getSpinHeight();
var top = this.getTop();
var canScroll = this.showScroll();
var mergedVisible = canScroll && visible;
return /*#__PURE__*/React.createElement("div", {
ref: this.scrollbarRef,
className: (0, _classnames.default)("".concat(prefixCls, "-scrollbar"), _defineProperty({}, "".concat(prefixCls, "-scrollbar-show"), canScroll)),
style: {
width: 8,
top: 0,
bottom: 0,
right: 0,
position: 'absolute',
display: mergedVisible ? null : 'none'
},
onMouseDown: this.onContainerMouseDown,
onMouseMove: this.delayHidden
}, /*#__PURE__*/React.createElement("div", {
ref: this.thumbRef,
className: (0, _classnames.default)("".concat(prefixCls, "-scrollbar-thumb"), _defineProperty({}, "".concat(prefixCls, "-scrollbar-thumb-moving"), dragging)),
style: {
width: '100%',
height: spinHeight,
top: top,
left: 0,
position: 'absolute',
background: 'rgba(0, 0, 0, 0.5)',
borderRadius: 99,
cursor: 'pointer',
userSelect: 'none'
},
onMouseDown: this.onMouseDown
}));
}
}]);
return ScrollBar;
}(React.Component);
exports.default = ScrollBar;