@jdcfe/yep-react/es/tabs/DefaultTabBar.js

一套移动端的React组件库

import _extends from "@babel/runtime/helpers/extends";
import _defineProperty from "@babel/runtime/helpers/defineProperty";
import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _assertThisInitialized from "@babel/runtime/helpers/assertThisInitialized";
import _inherits from "@babel/runtime/helpers/inherits";
import _possibleConstructorReturn from "@babel/runtime/helpers/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/getPrototypeOf";

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 _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; } }

var __rest = this && this.__rest || function (s, e) {
  var t = {};

  for (var p in s) {
    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];
  }

  if (s != null && typeof Object.getOwnPropertySymbols === "function") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
    if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];
  }
  return t;
};

import * as React from 'react';
import classNames from 'classnames';
import noop from '../_utils/noop';
import Gesture from '../gesture';
import { getPxStyle, getTransformPropValue, setPxStyle } from '../_utils/styleUtil';

var DefaultTabBar = /*#__PURE__*/function (_React$PureComponent) {
  _inherits(DefaultTabBar, _React$PureComponent);

  var _super = _createSuper(DefaultTabBar);

  function DefaultTabBar(props) {
    var _this;

    _classCallCheck(this, DefaultTabBar);

    _this = _super.call(this, props);

    _this.onPan = function () {
      var lastOffset = 0;
      var finalOffset = 0;

      var getLastOffset = function getLastOffset() {
        var isVertical = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : _this.isTabBarVertical();
        var offset = +"".concat(lastOffset).replace('%', '');

        if ("".concat(lastOffset).indexOf('%') >= 0) {
          offset /= 100;
          offset *= isVertical ? _this.layout.clientHeight : _this.layout.clientWidth;
        }

        return offset;
      };

      return {
        onPanStart: function onPanStart() {
          _this.setState({
            isMoving: true
          });
        },
        onPanMove: function onPanMove(status) {
          if (!status.moveStatus || !_this.layout) return;

          var isVertical = _this.isTabBarVertical();

          var offset = getLastOffset() + (isVertical ? status.moveStatus.y : status.moveStatus.x);
          var canScrollOffset = isVertical ? -_this.layout.scrollHeight + _this.layout.clientHeight : -_this.layout.scrollWidth + _this.layout.clientWidth;
          offset = Math.min(offset, 0);
          offset = Math.max(offset, canScrollOffset);
          setPxStyle(_this.layout, offset, 'px', isVertical);
          finalOffset = offset;

          _this.setState({
            showPrev: -offset > 0,
            showNext: offset > canScrollOffset
          });
        },
        onPanEnd: function onPanEnd() {
          var isVertical = _this.isTabBarVertical();

          lastOffset = finalOffset;

          _this.setState({
            isMoving: false,
            transform: getPxStyle(finalOffset, 'px', isVertical)
          });
        },
        setCurrentOffset: function setCurrentOffset(offset) {
          return lastOffset = offset;
        }
      };
    }();

    _this.getTransformByIndex = function (props) {
      var activeTab = props.activeTab,
          tabs = props.tabs,
          _props$page = props.page,
          page = _props$page === void 0 ? 0 : _props$page;

      var isVertical = _this.isTabBarVertical();

      var size = _this.getTabSize(page, tabs.length);

      var center = page / 2;
      var pos = Math.min(activeTab, tabs.length - center - 0.5);
      var skipSize = Math.min(-(pos - center + 0.5) * size, 0);

      _this.onPan.setCurrentOffset("".concat(skipSize, "%"));

      return {
        transform: getPxStyle(skipSize, '%', isVertical),
        showPrev: activeTab > center - 0.5 && tabs.length > page,
        showNext: activeTab < tabs.length - center - 0.5 && tabs.length > page
      };
    };

    _this.onClick = function (index) {
      var _this$props = _this.props,
          goToTab = _this$props.goToTab,
          onTabClick = _this$props.onTabClick,
          tabs = _this$props.tabs;
      onTabClick && onTabClick(tabs[index], index);
      goToTab && goToTab(index);
    };

    _this.renderTab = function (t, i, size, isTabBarVertical) {
      var _this$props2 = _this.props,
          prefixCls = _this$props2.prefixCls,
          renderTab = _this$props2.renderTab,
          activeTab = _this$props2.activeTab,
          tabBarTextStyle = _this$props2.tabBarTextStyle,
          tabBarActiveTextColor = _this$props2.tabBarActiveTextColor,
          tabBarInactiveTextColor = _this$props2.tabBarInactiveTextColor;
      var textStyle = Object.assign({}, tabBarTextStyle);
      var cls = "".concat(prefixCls, "-tab");

      if (activeTab === i) {
        cls += " ".concat(cls, "-active");

        if (tabBarActiveTextColor) {
          textStyle.color = tabBarActiveTextColor;
        }
      } else if (tabBarInactiveTextColor) {
        textStyle.color = tabBarInactiveTextColor;
      }

      return /*#__PURE__*/React.createElement("div", {
        key: "t_".concat(i),
        style: Object.assign(Object.assign({}, textStyle), isTabBarVertical ? {
          height: "".concat(size, "%")
        } : {
          width: "".concat(size, "%")
        }),
        className: cls,
        onClick: function onClick() {
          return _this.onClick(i);
        }
      }, renderTab ? renderTab(t) : t.title);
    };

    _this.state = Object.assign({
      transform: '',
      isMoving: false,
      showPrev: false,
      showNext: false
    }, _this.getTransformByIndex(props));
    _this.renderTab = _this.renderTab.bind(_assertThisInitialized(_this));
    _this.isTabBarVertical = _this.isTabBarVertical.bind(_assertThisInitialized(_this));
    _this.getTabSize = _this.getTabSize.bind(_assertThisInitialized(_this));
    _this.onClick = _this.onClick.bind(_assertThisInitialized(_this));
    return _this;
  }

  _createClass(DefaultTabBar, [{
    key: "componentWillReceiveProps",
    value: function componentWillReceiveProps(nextProps) {
      if (this.props.activeTab !== nextProps.activeTab || this.props.tabs !== nextProps.tabs || this.props.tabs.length !== nextProps.tabs.length) {
        this.setState(Object.assign({}, this.getTransformByIndex(nextProps)));
      }
    }
  }, {
    key: "isTabBarVertical",
    value: function isTabBarVertical() {
      var position = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.props.tabBarPosition;
      return position === 'left' || position === 'right';
    }
  }, {
    key: "getTabSize",
    value: function getTabSize(page, tabLength) {
      return 100 / Math.min(page, tabLength);
    }
  }, {
    key: "render",
    value: function render() {
      var _this2 = this;

      var _this$props3 = this.props,
          prefixCls = _this$props3.prefixCls,
          animated = _this$props3.animated,
          _this$props3$tabs = _this$props3.tabs,
          tabs = _this$props3$tabs === void 0 ? [] : _this$props3$tabs,
          _this$props3$page = _this$props3.page,
          page = _this$props3$page === void 0 ? 0 : _this$props3$page,
          _this$props3$activeTa = _this$props3.activeTab,
          activeTab = _this$props3$activeTa === void 0 ? 0 : _this$props3$activeTa,
          tabBarBackgroundColor = _this$props3.tabBarBackgroundColor,
          tabBarUnderlineStyle = _this$props3.tabBarUnderlineStyle,
          tabBarPosition = _this$props3.tabBarPosition,
          renderUnderline = _this$props3.renderUnderline,
          style = _this$props3.style;
      var _this$state = this.state,
          isMoving = _this$state.isMoving,
          transform = _this$state.transform,
          showNext = _this$state.showNext,
          showPrev = _this$state.showPrev;
      var cls = classNames(prefixCls, "".concat(prefixCls, "-").concat(tabBarPosition), _defineProperty({}, " ".concat(prefixCls, "-animated"), animated && !isMoving));
      var isTabBarVertical = this.isTabBarVertical();
      var needScroll = tabs.length > page;
      var size = this.getTabSize(page, tabs.length);
      var Tabs = tabs.map(function (t, i) {
        return _this2.renderTab(t, i, size, isTabBarVertical);
      });
      var styles = Object.assign(Object.assign({}, style), {
        backgroundColor: tabBarBackgroundColor || ''
      });
      var transformStyle = needScroll ? Object.assign({}, getTransformPropValue(transform)) : {};

      var _a = this.onPan,
          setCurrentOffset = _a.setCurrentOffset,
          onPan = __rest(_a, ["setCurrentOffset"]);

      var underlineProps = {
        style: Object.assign(Object.assign(Object.assign({}, isTabBarVertical ? {
          height: "".concat(size, "%")
        } : {
          width: "".concat(size, "%")
        }), isTabBarVertical ? {
          top: "".concat(size * activeTab, "%")
        } : {
          left: "".concat(size * activeTab, "%")
        }), tabBarUnderlineStyle),
        className: "".concat(prefixCls, "-underline")
      };
      return /*#__PURE__*/React.createElement("div", {
        className: cls,
        style: styles
      }, showPrev && /*#__PURE__*/React.createElement("div", {
        className: "".concat(prefixCls, "-prevpage")
      }), /*#__PURE__*/React.createElement(Gesture, _extends({}, onPan, {
        direction: isTabBarVertical ? 'vertical' : 'horizontal'
      }), /*#__PURE__*/React.createElement("div", {
        className: "".concat(prefixCls, "-content"),
        ref: function ref(div) {
          return _this2.layout = div;
        },
        style: transformStyle
      }, Tabs, renderUnderline ? renderUnderline(underlineProps) : /*#__PURE__*/React.createElement("div", underlineProps, /*#__PURE__*/React.createElement("div", {
        className: "".concat(prefixCls, "-underline-bar")
      })))), showNext && /*#__PURE__*/React.createElement("div", {
        className: "".concat(prefixCls, "-nextpage")
      }));
    }
  }]);

  return DefaultTabBar;
}(React.PureComponent);

export { DefaultTabBar as default };
DefaultTabBar.defaultProps = {
  prefixCls: 'Yep-tabs-default-bar',
  onTabClick: noop,
  activeTab: 0,
  page: 5,
  animated: true,
  tabBarBackgroundColor: '#FFF'
};