linkmore-design/lib/image-viewer/wrapeer/reducer.js

🌈 🚀lm组件库。🚀

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.reducer = exports.initialState = exports.default = void 0;
// 初始化状态值
const defaultState = {
  currentIndex: 0,
  // 当前选中的图片索引
  currentUrl: '',
  // * 当前选中的图片链接
  transform: {
    scale: 1,
    // 缩放倍数
    rotateZ: 0 // Z轴旋转方向
  } // 当前选中的图片变换
};

// 状态管理操作
const reducer = (state, action) => {
  const {
    transform,
    current,
    visible
  } = action;
  switch (action.type) {
    case 'changeVisible':
      // 控制显示隐藏
      return {
        ...state,
        visible
      };
    case 'changeTransform':
      // 改变转换
      return {
        ...state,
        transform: {
          ...state.transform,
          ...transform
        }
      };
    case 'changeCurrent':
      // 改变当前选中的图片
      return {
        ...state,
        ...current,
        transform: defaultState.transform
      };
    case 'init':
      // 改变当前选中的图片
      return {
        ...state,
        ...defaultState
      };
    default:
      throw new Error();
  }
};

// 仅在初始化时触发一次
exports.reducer = reducer;
const initialState = props => {
  const {
    initialIndex
  } = props;
  return {
    ...defaultState,
    currentIndex: initialIndex
  };
};
exports.initialState = initialState;
var _default = reducer;
exports.default = _default;