yylib-quick-mobile/dist/utils/JsPluginUtils.js

yylib-quick-mobile

'use strict';

var loader = require('./loader');
var _ = require('lodash');
var mathUtil = require('./MathUtils');
var formatUtils = require('./formatUtils');
var JsPluginUtils = {
    /**
     * 初始化原有事件信息
     * options{
    * 		page:被扩展的页面
    * 		uiEvent:被扩展的原始事件数据
    * }
     */
    init: function init(options) {
        var _ref = options || {},
            page = _ref.page,
            uiEvent = _ref.uiEvent;

        if (!page) return;
        var loadPath = page.getJsPluginUrl();
        var pageCode = page.getPageCode();
        if (loadPath && pageCode && uiEvent) {
            if (window["YYPlugin_" + pageCode]) {
                //判断方法是否存在
                JsPluginUtils.merge(options); //合并
            } else {
                loader.loadJS(loadPath, function () {
                    JsPluginUtils.merge(options); //合并
                });
            }
        }
    },
    /**
     * 合并文件
     * options{
    * 		page:被扩展的页面
    * 		uiEvent:被扩展的原始事件数据
    * }
     */
    merge: function merge(options) {
    	var transUtils = { _: _, ajax: window.YYUtils.Ajax, authToken: window.YYUtils.AuthToken, mathUtil: mathUtil, formatUtils: formatUtils }; //工具类

        var _ref2 = options || {},
            page = _ref2.page,
            uiEvent = _ref2.uiEvent;

        if (!page) return;
        var loadPath = page.getJsPluginUrl();
        var pageCode = page.getPageCode();
        if (loadPath && pageCode && uiEvent) {
            if (window["YYPlugin_" + pageCode]) {
                var pluginEvents = this.dealPluginEvent(page, window["YYPlugin_" + pageCode](transUtils));
                var allEvent = this.combineEvent(pluginEvents, uiEvent); //合并所有的事件
                var returnEvent = this.transEvent(allEvent, page,pluginEvents); //绑定所有的事件
                page.refresh(null, { uiEvent: returnEvent });
            } else {
                console.error("请按规范命名当前页面扩展插件的方法名，缺少方法：YYPlugin_" + pageCode);
            }
        }
    },
    dealPluginEvent: function dealPluginEvent(page, copyEvents) {
        for (var uikey in copyEvents) {
            var itemEvents = copyEvents[uikey];
            for (var name in itemEvents) {
                if (itemEvents[name] && typeof itemEvents[name] == 'function') {
                    itemEvents[name] = itemEvents[name].bind(page);
                } else {
                    console.error('[绑定事件失败]' + uikey + '.' + name + ',检查是否为有效的Function', err);
                }
            }
        }
        return copyEvents;
    },
    //合并事件对象  并不是简单地覆盖而是对象合并
    combineEvent: function combineEvent(pluginEvents, _uiEvent) {
        for (var item in _uiEvent) {
            if (pluginEvents[item]) {
                _.assign(_uiEvent[item], pluginEvents[item]); //合并
            }
        }
        for (var item in pluginEvents) {
            if (!_uiEvent[item]) {
                _uiEvent[item] = pluginEvents[item];
            }
        }
        return _uiEvent;
    },
    transEvent: function transEvent(uiEvent, page,pluginEvents) {

        //注意此次需要克隆，以防止引用共享
        //扩展事件规则   事件发生前    前加 before_  事件发生后 after_
        var _uiEvent = _.cloneDeep(uiEvent);
        for (var uikey in _uiEvent) {
            for (var eventName in _uiEvent[uikey]) {
                if (eventName.indexOf('before_') == -1 && eventName.indexOf('after_') == -1&&((pluginEvents[uikey])&&(typeof pluginEvents[uikey][eventName]=="function"||typeof pluginEvents[uikey]["before_" +eventName]=="function"||typeof pluginEvents[uikey]["after_" +eventName]=="function"))) {
                    (function (key, name) {
                        var originFunc = _uiEvent[key][name];
                        _uiEvent[key][name] = function () {
                            var originFuncParams = arguments;
                            var mainSet = new Promise(function (resolve, reject) {
                                console.log("执行" + key + "组件事件:" + name);
                                resolve("success");
                            }).then(function () {
                                if (_uiEvent[key]["before_" + name]) {
                                    return _uiEvent[key]["before_" + name].apply(page, originFuncParams); //将触发前事件放入事件数组
                                }
                            }).then(function () {
                                return originFunc.apply(page, originFuncParams); //固有事件
                            }).then(function () {
                                if (_uiEvent[key]["after_" + name]) {
                                    _uiEvent[key]["after_" + name].apply(page, originFuncParams); //将触发前事件放入事件数组
                                }
                            }).catch(function (msg) {
                                console.log(msg);
                            });
                        };
                    })(uikey, eventName);
                }
            }
        }
        return _uiEvent;
    }
};
module.exports = JsPluginUtils;