/**
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* Pilot
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* @author Tevin
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*/
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import Taro, { getCurrentInstance, getCurrentPages } from '@tarojs/taro';
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import { $hostBoot } from '@components/bases/HostBoot';
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import project from '@project';
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export class Pilot {
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constructor() {
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}
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$data() {
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return {};
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}
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createOptions(dataAdd) {
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const options = {
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methods: {},
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};
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const names = [];
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// 实例本身的字段
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Object.getOwnPropertyNames(this).forEach(name => names.push(name));
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// 类的字段
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Object.getOwnPropertyNames(Object.getPrototypeOf(this)).forEach(name => names.push(name));
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// 传递
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names.forEach(name => {
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// 构造器忽略，如果存在属性 $methods 也忽略
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if (name === 'constructor' || name === '$methods') {
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return;
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}
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if (/^\$/.test(name)) {
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if (name === '$data' && typeof dataAdd !== 'undefined') {
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// 转换 dataAdd 中 assets 属性下的图片地址值
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if (typeof dataAdd.assets !== 'undefined') {
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dataAdd.assets = Pilot.transAssets(dataAdd.assets);
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}
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options.data = () => {
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// 当有传data值进来，初始值必须带data中的字段
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const dataOrig = this.$data();
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return {
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...dataOrig,
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...dataAdd,
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};
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};
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} else {
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options[name.replace('$', '')] = this[name];
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}
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} else {
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options.methods[name] = this[name];
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}
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});
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this._bindTaroPage(options);
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return options;
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}
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_bindTaroPage(options) {
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// 绑定页面实例到Page
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const { created, beforeDestroy, onMessage, onBridge } = options;
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const option2 = {
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created() {
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const instance = getCurrentInstance();
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instance.page.$component = this;
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// 绑定方法到页面实例
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this.$poster = Pilot.createPoster(this);
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this.$onMessage = onMessage || (() => null);
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this.$onBridge = onBridge || (() => null);
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// 实际生命周期回调
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created && created.call(this);
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},
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beforeDestroy() {
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const instance = getCurrentInstance();
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delete instance.page.$component;
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// 实际生命周期回调
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beforeDestroy && beforeDestroy.call(this);
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// 取消绑定
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this.$onMessage = null;
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this.$poster = null;
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this.$onBridge = null;
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},
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};
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options.created = option2.created;
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options.beforeDestroy = option2.beforeDestroy;
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delete options.onMessage;
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delete options.poster;
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delete options.onBridge;
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}
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// 创建页面通讯器
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static createPoster($vm) {
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return (pageType, action, data) => {
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// 解除引用关系
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const nextData = JSON.parse(JSON.stringify(data || {}));
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// 下一页
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if (pageType === 'nextPage') {
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// 持续 3 秒，检测下一页是否存在
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let count = 0;
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const timer = setInterval(() => {
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if (++count > 60) {
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clearInterval(timer);
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}
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const currentPages = getCurrentPages();
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const pageIndex = currentPages.findIndex(page => page.$component === $vm);
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const nextPage = currentPages[pageIndex + 1];
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if (nextPage) {
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clearInterval(timer);
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nextPage.$component.$onMessage(action, nextData);
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}
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}, 50);
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} else if (pageType === 'prevPage') {
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const currentPages = getCurrentPages();
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const pageIndex = currentPages.findIndex(page => page.$component === $vm);
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const prevPage = currentPages[pageIndex - 1];
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if (prevPage) {
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prevPage.$component.$onMessage(action, nextData);
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}
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} else if (pageType === 'rootPage') {
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const currentPages = getCurrentPages();
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const rootPage = currentPages[0];
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rootPage.$component.$onMessage(action, nextData);
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}
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};
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}
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/**
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* 转换静态图片引用
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* @param assets
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* @return {{}}
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*/
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static transAssets(assets = {}) {
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const assets2 = {};
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Object.keys(assets).forEach(key => {
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let asset = '';
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if (assets[key].indexOf('assets') >= 0) {
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asset = assets[key].split('assets')[1];
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} else {
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asset = assets[key].replace(/^[.\/\\]*/, '/');
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}
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// 网页
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if (process.env.TARO_ENV === 'h5') {
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assets2[key] = project.host.assetsPath + asset;
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}
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// 小程序
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else if (process.env.TARO_ENV === 'weapp') {
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assets2[key] = $hostBoot.getHost() + project.host.assetsPath + asset;
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}
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});
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return assets2;
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}
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}
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