combine-action-reducer/es/ActionReducer/CombineActionReducer.js

create action creator and reducer with one action-reduer

"use strict";
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
var ActionReducer_1 = require("./ActionReducer");
/**
 * 合并多个reducer;
 * @param reducers 用于被连接的一批reducers;
 */
function CombineReducer(reducers) {
    var combineReducers = reducers;
    return function (s, ac) {
        if (s === void 0) { s = {}; }
        // 使用'/' 作为action.type的域的默认分割符号.
        var newAction = __assign({}, ac);
        var path = newAction.type.split("/");
        // 尝试选择路径
        var currentSelected = path.shift();
        var selectedReducer = currentSelected && combineReducers[currentSelected];
        if (selectedReducer && currentSelected) {
            // 选择到了一个 selectedReducer, 使用这个 reducer 继续处理归约.
            newAction.type = path.join("/"); // 使用剩下的路径作为 type;
            s[currentSelected] = selectedReducer(s[currentSelected], newAction);
        }
        else {
            // 没有路径选中就遍历所有的子reducer; 初始化, 没有路径的dispatch;
            var keys = Object.getOwnPropertyNames(combineReducers);
            keys.forEach(function (one) {
                s[one] = combineReducers[one](s[one], ac);
            });
        }
        return s;
    };
}
/**
 * 合并多个ActionReducer;
 * @param combineObj 描述ActionReducer 如何合并
 */
function CombineActionReducer(combineObj) {
    // 分别提取出Actions 和 Reducers;
    var keys = Object.getOwnPropertyNames(combineObj);
    var reducers = {};
    var actions = {};
    keys.forEach(function (one) {
        reducers[one] = combineObj[one].reducer;
        actions[one] = combineObj[one].action;
    });
    return {
        reducer: CombineReducer(reducers),
        // 由于ActionCreator的结构和mapObj 的结构一致, 可以直接使用buildActionCreateor
        action: ActionReducer_1.buildActionCreator(actions),
    };
}
exports.CombineActionReducer = CombineActionReducer;