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iframe.ts
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iframe.ts
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import WuJie from "./sandbox";
import { ScriptObject } from "./template";
import { renderElementToContainer } from "./shadow";
import { syncUrlToWindow } from "./sync";
import {
fixElementCtrSrcOrHref,
isConstructable,
anchorElementGenerator,
isMatchSyncQueryById,
warn,
error,
execHooks,
getCurUrl,
getAbsolutePath,
setAttrsToElement,
} from "./utils";
import {
documentProxyProperties,
rawAddEventListener,
rawRemoveEventListener,
rawDocumentQuerySelector,
mainDocumentAddEventListenerEvents,
mainAndAppAddEventListenerEvents,
appDocumentAddEventListenerEvents,
appDocumentOnEvents,
appWindowAddEventListenerEvents,
appWindowOnEvent,
windowProxyProperties,
windowRegWhiteList,
rawWindowAddEventListener,
rawWindowRemoveEventListener,
} from "./common";
import { getJsLoader } from "./plugin";
import { WUJIE_TIPS_SCRIPT_ERROR_REQUESTED, WUJIE_DATA_FLAG } from "./constant";
import { ScriptObjectLoader } from "./index";
declare global {
interface Window {
// 是否存在无界
__POWERED_BY_WUJIE__?: boolean;
// 子应用公共加载路径
__WUJIE_PUBLIC_PATH__: string;
// 原生的querySelector
__WUJIE_RAW_DOCUMENT_QUERY_SELECTOR__: typeof Document.prototype.querySelector;
// iframe内原生的createElement
__WUJIE_RAW_DOCUMENT_CREATE_ELEMENT__: typeof Document.prototype.createElement;
// iframe内原生的createTextNode
__WUJIE_RAW_DOCUMENT_CREATE_TEXT_NODE__: typeof Document.prototype.createTextNode;
// 原生的querySelector
__WUJIE_RAW_DOCUMENT_QUERY_SELECTOR_ALL__: typeof Document.prototype.querySelectorAll;
// 原生的window对象
__WUJIE_RAW_WINDOW__: Window;
// 子应用沙盒实例
__WUJIE: WuJie;
// 子应用mount函数
__WUJIE_MOUNT: () => void;
// 子应用unmount函数
__WUJIE_UNMOUNT: () => void;
// document type
Document: typeof Document;
// img type
HTMLImageElement: typeof HTMLImageElement;
// node type
Node: typeof Node;
// element type
Element: typeof Element;
// htmlElement typeof
HTMLElement: typeof HTMLElement;
// anchor type
HTMLAnchorElement: typeof HTMLAnchorElement;
// source type
HTMLSourceElement: typeof HTMLSourceElement;
// link type
HTMLLinkElement: typeof HTMLLinkElement;
// script type
HTMLScriptElement: typeof HTMLScriptElement;
EventTarget: typeof EventTarget;
Event: typeof Event;
ShadowRoot: typeof ShadowRoot;
// 注入对象
$wujie: { [key: string]: any };
}
interface HTMLHeadElement {
_cacheListeners: Map<string, EventListenerOrEventListenerObject[]>;
}
interface HTMLBodyElement {
_cacheListeners: Map<string, EventListenerOrEventListenerObject[]>;
}
interface Document {
createTreeWalker(
root: Node,
whatToShow?: number,
filter?: NodeFilter | null,
entityReferenceExpansion?: boolean
): TreeWalker;
}
}
/**
* 修改window对象的事件监听,只有路由事件采用iframe的事件
*/
function patchIframeEvents(iframeWindow: Window) {
iframeWindow.addEventListener = function addEventListener<K extends keyof WindowEventMap>(
type: K,
listener: (this: Window, ev: WindowEventMap[K]) => any,
options?: boolean | AddEventListenerOptions
) {
// 运行插件钩子函数
execHooks(iframeWindow.__WUJIE.plugins, "windowAddEventListenerHook", iframeWindow, type, listener, options);
if (appWindowAddEventListenerEvents.includes(type)) {
return rawWindowAddEventListener.call(iframeWindow, type, listener, options);
}
// 在子应用嵌套场景使用window.window获取真实window
rawWindowAddEventListener.call(window.__WUJIE_RAW_WINDOW__ || window, type, listener, options);
};
iframeWindow.removeEventListener = function removeEventListener<K extends keyof WindowEventMap>(
type: K,
listener: (this: Window, ev: WindowEventMap[K]) => any,
options?: boolean | AddEventListenerOptions
) {
// 运行插件钩子函数
execHooks(iframeWindow.__WUJIE.plugins, "windowRemoveEventListenerHook", iframeWindow, type, listener, options);
if (appWindowAddEventListenerEvents.includes(type)) {
return rawWindowRemoveEventListener.call(iframeWindow, type, listener, options);
}
rawWindowRemoveEventListener.call(window.__WUJIE_RAW_WINDOW__ || window, type, listener, options);
};
}
function patchIframeVariable(iframeWindow: Window, wujie: WuJie, appHostPath: string): void {
iframeWindow.__WUJIE = wujie;
iframeWindow.__WUJIE_PUBLIC_PATH__ = appHostPath + "/";
iframeWindow.$wujie = wujie.provide;
iframeWindow.__WUJIE_RAW_WINDOW__ = iframeWindow;
iframeWindow.__WUJIE_RAW_DOCUMENT_QUERY_SELECTOR__ = iframeWindow.Document.prototype.querySelector;
iframeWindow.__WUJIE_RAW_DOCUMENT_QUERY_SELECTOR_ALL__ = iframeWindow.Document.prototype.querySelectorAll;
iframeWindow.__WUJIE_RAW_DOCUMENT_CREATE_ELEMENT__ = iframeWindow.Document.prototype.createElement;
iframeWindow.__WUJIE_RAW_DOCUMENT_CREATE_TEXT_NODE__ = iframeWindow.Document.prototype.createTextNode;
}
/**
* 对iframe的history的pushState和replaceState进行修改
* 将从location劫持后的数据修改回来,防止跨域错误
* 同步路由到主应用
* @param iframeWindow
* @param appHostPath 子应用的 host path
* @param mainHostPath 主应用的 host path
*/
function patchIframeHistory(iframeWindow: Window, appHostPath: string, mainHostPath: string): void {
const history = iframeWindow.history;
const rawHistoryPushState = history.pushState;
const rawHistoryReplaceState = history.replaceState;
history.pushState = function (data: any, title: string, url?: string): void {
const baseUrl =
mainHostPath + iframeWindow.location.pathname + iframeWindow.location.search + iframeWindow.location.hash;
const mainUrl = getAbsolutePath(url?.replace(appHostPath, ""), baseUrl);
const ignoreFlag = url === undefined;
rawHistoryPushState.call(history, data, title, ignoreFlag ? undefined : mainUrl);
if (ignoreFlag) return;
updateBase(iframeWindow, appHostPath, mainHostPath);
syncUrlToWindow(iframeWindow);
};
history.replaceState = function (data: any, title: string, url?: string): void {
const baseUrl =
mainHostPath + iframeWindow.location.pathname + iframeWindow.location.search + iframeWindow.location.hash;
const mainUrl = getAbsolutePath(url?.replace(appHostPath, ""), baseUrl);
const ignoreFlag = url === undefined;
rawHistoryReplaceState.call(history, data, title, ignoreFlag ? undefined : mainUrl);
if (ignoreFlag) return;
updateBase(iframeWindow, appHostPath, mainHostPath);
syncUrlToWindow(iframeWindow);
};
}
/**
* 动态的修改iframe的base地址
* @param iframeWindow
* @param url
* @param appHostPath
* @param mainHostPath
*/
function updateBase(iframeWindow: Window, appHostPath: string, mainHostPath: string) {
const baseUrl = new URL(iframeWindow.location.href?.replace(mainHostPath, ""), appHostPath);
const baseElement = rawDocumentQuerySelector.call(iframeWindow.document, "base");
if (baseElement) baseElement.setAttribute("href", appHostPath + baseUrl.pathname);
}
/**
* patch iframe window effect
* @param iframeWindow
*/
// TODO 继续改进
function patchWindowEffect(iframeWindow: Window): void {
// 属性处理函数
function processWindowProperty(key: string): boolean {
const value = iframeWindow[key];
try {
if (typeof value === "function" && !isConstructable(value)) {
iframeWindow[key] = window[key].bind(window);
} else {
iframeWindow[key] = window[key];
}
return true;
} catch (e) {
warn(e.message);
return false;
}
}
Object.getOwnPropertyNames(iframeWindow).forEach((key) => {
// 特殊处理
if (key === "getSelection") {
Object.defineProperty(iframeWindow, key, {
get: () => iframeWindow.document[key],
});
return;
}
// 单独属性
if (windowProxyProperties.includes(key)) {
processWindowProperty(key);
return;
}
// 正则匹配,可以一次处理多个
windowRegWhiteList.some((reg) => {
if (reg.test(key) && key in iframeWindow.parent) {
return processWindowProperty(key);
}
return false;
});
});
// onEvent set
const windowOnEvents = Object.getOwnPropertyNames(window)
.filter((p) => /^on/.test(p))
.filter((e) => !appWindowOnEvent.includes(e));
// 走主应用window
windowOnEvents.forEach((e) => {
const descriptor = Object.getOwnPropertyDescriptor(iframeWindow, e) || {
enumerable: true,
writable: true,
};
try {
Object.defineProperty(iframeWindow, e, {
enumerable: descriptor.enumerable,
configurable: true,
get: () => window[e],
set:
descriptor.writable || descriptor.set
? (handler) => {
window[e] = typeof handler === "function" ? handler.bind(iframeWindow) : handler;
}
: undefined,
});
} catch (e) {
warn(e.message);
}
});
// 运行插件钩子函数
execHooks(iframeWindow.__WUJIE.plugins, "windowPropertyOverride", iframeWindow);
}
/**
* 记录节点的监听事件
*/
function recordEventListeners(iframeWindow: Window) {
const sandbox = iframeWindow.__WUJIE;
iframeWindow.Node.prototype.addEventListener = function (
type: string,
handler: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions
): void {
// 添加事件缓存
const elementListenerList = sandbox.elementEventCacheMap.get(this);
if (elementListenerList) {
if (!elementListenerList.find((listener) => listener.handler === handler)) {
elementListenerList.push({ type, handler, options });
}
} else sandbox.elementEventCacheMap.set(this, [{ type, handler, options }]);
return rawAddEventListener.call(this, type, handler, options);
};
iframeWindow.Node.prototype.removeEventListener = function (
type: string,
handler: EventListenerOrEventListenerObject,
options?: boolean | EventListenerOptions
): void {
// 清除缓存
const elementListenerList = sandbox.elementEventCacheMap.get(this);
if (elementListenerList) {
const index = elementListenerList?.findIndex((ele) => ele.handler === handler);
elementListenerList.splice(index, 1);
}
if (!elementListenerList?.length) {
sandbox.elementEventCacheMap.delete(this);
}
return rawRemoveEventListener.call(this, type, handler, options);
};
}
/**
* 恢复节点的监听事件
*/
export function recoverEventListeners(rootElement: Element | ChildNode, iframeWindow: Window) {
const sandbox = iframeWindow.__WUJIE;
const elementEventCacheMap: WeakMap<
Node,
Array<{ type: string; handler: EventListenerOrEventListenerObject; options: any }>
> = new WeakMap();
const ElementIterator = document.createTreeWalker(rootElement, NodeFilter.SHOW_ELEMENT, null, false);
let nextElement = ElementIterator.currentNode;
while (nextElement) {
const elementListenerList = sandbox.elementEventCacheMap.get(nextElement);
if (elementListenerList?.length) {
elementEventCacheMap.set(nextElement, elementListenerList);
elementListenerList.forEach((listener) => {
nextElement.addEventListener(listener.type, listener.handler, listener.options);
});
}
nextElement = ElementIterator.nextNode() as HTMLElement;
}
sandbox.elementEventCacheMap = elementEventCacheMap;
}
/**
* 恢复根节点的监听事件
*/
export function recoverDocumentListeners(
oldRootElement: Element | ChildNode,
newRootElement: Element | ChildNode,
iframeWindow: Window
) {
const sandbox = iframeWindow.__WUJIE;
const elementEventCacheMap: WeakMap<
Node,
Array<{ type: string; handler: EventListenerOrEventListenerObject; options: any }>
> = new WeakMap();
const elementListenerList = sandbox.elementEventCacheMap.get(oldRootElement);
if (elementListenerList?.length) {
elementEventCacheMap.set(newRootElement, elementListenerList);
elementListenerList.forEach((listener) => {
newRootElement.addEventListener(listener.type, listener.handler, listener.options);
});
}
sandbox.elementEventCacheMap = elementEventCacheMap;
}
/**
* 修复vue绑定事件e.timeStamp < attachedTimestamp 的情况
*/
export function patchEventTimeStamp(targetWindow: Window, iframeWindow: Window) {
Object.defineProperty(targetWindow.Event.prototype, "timeStamp", {
get: () => {
return iframeWindow.document.createEvent("Event").timeStamp;
},
});
}
/**
* patch document effect
* @param iframeWindow
*/
// TODO 继续改进
function patchDocumentEffect(iframeWindow: Window): void {
const sandbox = iframeWindow.__WUJIE;
/**
* 处理 addEventListener和removeEventListener
* 由于这个劫持导致 handler 的this发生改变,所以需要handler.bind(document)
* 但是这样会导致removeEventListener无法正常工作,因为handler => handler.bind(document)
* 这个地方保存callback = handler.bind(document) 方便removeEventListener
*/
const handlerCallbackMap: WeakMap<EventListenerOrEventListenerObject, EventListenerOrEventListenerObject> =
new WeakMap();
const handlerTypeMap: WeakMap<EventListenerOrEventListenerObject, Array<string>> = new WeakMap();
iframeWindow.Document.prototype.addEventListener = function (
type: string,
handler: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions
): void {
let callback = handlerCallbackMap.get(handler);
const typeList = handlerTypeMap.get(handler);
// 设置 handlerCallbackMap
if (!callback) {
callback = typeof handler === "function" ? handler.bind(this) : handler;
handlerCallbackMap.set(handler, callback);
}
// 设置 handlerTypeMap
if (typeList) {
if (!typeList.includes(type)) typeList.push(type);
} else {
handlerTypeMap.set(handler, [type]);
}
// 运行插件钩子函数
execHooks(iframeWindow.__WUJIE.plugins, "documentAddEventListenerHook", iframeWindow, type, callback, options);
if (appDocumentAddEventListenerEvents.includes(type)) {
return rawAddEventListener.call(this, type, callback, options);
}
// 降级统一走 sandbox.document
if (sandbox.degrade) return sandbox.document.addEventListener(type, callback, options);
if (mainDocumentAddEventListenerEvents.includes(type))
return window.document.addEventListener(type, callback, options);
if (mainAndAppAddEventListenerEvents.includes(type)) {
window.document.addEventListener(type, callback, options);
sandbox.shadowRoot.addEventListener(type, callback, options);
return;
}
sandbox.shadowRoot.addEventListener(type, callback, options);
};
iframeWindow.Document.prototype.removeEventListener = function (
type: string,
handler: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions
): void {
const callback: EventListenerOrEventListenerObject = handlerCallbackMap.get(handler);
const typeList = handlerTypeMap.get(handler);
if (callback) {
if (typeList?.includes(type)) {
typeList.splice(typeList.indexOf(type), 1);
if (!typeList.length) {
handlerCallbackMap.delete(handler);
handlerTypeMap.delete(handler);
}
}
// 运行插件钩子函数
execHooks(iframeWindow.__WUJIE.plugins, "documentRemoveEventListenerHook", iframeWindow, type, callback, options);
if (appDocumentAddEventListenerEvents.includes(type)) {
return rawRemoveEventListener.call(this, type, callback, options);
}
if (sandbox.degrade) return sandbox.document.removeEventListener(type, callback, options);
if (mainDocumentAddEventListenerEvents.includes(type)) {
return window.document.removeEventListener(type, callback, options);
}
if (mainAndAppAddEventListenerEvents.includes(type)) {
window.document.removeEventListener(type, callback, options);
sandbox.shadowRoot.removeEventListener(type, callback, options);
return;
}
sandbox.shadowRoot.removeEventListener(type, callback, options);
}
};
// 处理onEvent
const elementOnEvents = Object.keys(iframeWindow.HTMLElement.prototype).filter((ele) => /^on/.test(ele));
const documentOnEvent = Object.keys(iframeWindow.Document.prototype)
.filter((ele) => /^on/.test(ele))
.filter((ele) => !appDocumentOnEvents.includes(ele));
elementOnEvents
.filter((e) => documentOnEvent.includes(e))
.forEach((e) => {
const descriptor = Object.getOwnPropertyDescriptor(iframeWindow.Document.prototype, e) || {
enumerable: true,
writable: true,
};
try {
Object.defineProperty(iframeWindow.Document.prototype, e, {
enumerable: descriptor.enumerable,
configurable: true,
get: () => (sandbox.degrade ? sandbox.document[e] : sandbox.shadowRoot.firstElementChild[e]),
set:
descriptor.writable || descriptor.set
? (handler) => {
const val = typeof handler === "function" ? handler.bind(iframeWindow.document) : handler;
sandbox.degrade ? (sandbox.document[e] = val) : (sandbox.shadowRoot.firstElementChild[e] = val);
}
: undefined,
});
} catch (e) {
warn(e.message);
}
});
// 处理属性get
const {
ownerProperties,
modifyProperties,
shadowProperties,
shadowMethods,
documentProperties,
documentMethods,
documentEvents,
} = documentProxyProperties;
modifyProperties.concat(shadowProperties, shadowMethods, documentProperties, documentMethods).forEach((propKey) => {
const descriptor = Object.getOwnPropertyDescriptor(iframeWindow.Document.prototype, propKey) || {
enumerable: true,
writable: true,
};
try {
Object.defineProperty(iframeWindow.Document.prototype, propKey, {
enumerable: descriptor.enumerable,
configurable: true,
get: () => sandbox.proxyDocument[propKey],
set: undefined,
});
} catch (e) {
warn(e.message);
}
});
// 处理document专属事件
// TODO 内存泄露
documentEvents.forEach((propKey) => {
const descriptor = Object.getOwnPropertyDescriptor(iframeWindow.Document.prototype, propKey) || {
enumerable: true,
writable: true,
};
try {
Object.defineProperty(iframeWindow.Document.prototype, propKey, {
enumerable: descriptor.enumerable,
configurable: true,
get: () => (sandbox.degrade ? sandbox : window).document[propKey],
set:
descriptor.writable || descriptor.set
? (handler) => {
(sandbox.degrade ? sandbox : window).document[propKey] =
typeof handler === "function" ? handler.bind(iframeWindow.document) : handler;
}
: undefined,
});
} catch (e) {
warn(e.message);
}
});
// process owner property
ownerProperties.forEach((propKey) => {
Object.defineProperty(iframeWindow.document, propKey, {
enumerable: true,
configurable: true,
get: () => sandbox.proxyDocument[propKey],
set: undefined,
});
});
// 运行插件钩子函数
execHooks(iframeWindow.__WUJIE.plugins, "documentPropertyOverride", iframeWindow);
}
/**
* patch Node effect
* 1、处理 getRootNode
* 2、处理 appendChild、insertBefore,当插入的节点为 svg 时,createElement 的 patch 会被去除,需要重新 patch
* @param iframeWindow
*/
function patchNodeEffect(iframeWindow: Window): void {
const rawGetRootNode = iframeWindow.Node.prototype.getRootNode;
const rawAppendChild = iframeWindow.Node.prototype.appendChild;
const rawInsertRule = iframeWindow.Node.prototype.insertBefore;
iframeWindow.Node.prototype.getRootNode = function (options?: GetRootNodeOptions): Node {
const rootNode = rawGetRootNode.call(this, options);
if (rootNode === iframeWindow.__WUJIE.shadowRoot) return iframeWindow.document;
else return rootNode;
};
iframeWindow.Node.prototype.appendChild = function <T extends Node>(node: T): T {
const res = rawAppendChild.call(this, node);
patchElementEffect(node, iframeWindow);
return res;
};
iframeWindow.Node.prototype.insertBefore = function <T extends Node>(node: T, child: Node | null): T {
const res = rawInsertRule.call(this, node, child);
patchElementEffect(node, iframeWindow);
return res;
};
}
/**
* 修复资源元素的相对路径问题
* @param iframeWindow
*/
function patchRelativeUrlEffect(iframeWindow: Window): void {
fixElementCtrSrcOrHref(iframeWindow, iframeWindow.HTMLImageElement, "src");
fixElementCtrSrcOrHref(iframeWindow, iframeWindow.HTMLAnchorElement, "href");
fixElementCtrSrcOrHref(iframeWindow, iframeWindow.HTMLSourceElement, "src");
fixElementCtrSrcOrHref(iframeWindow, iframeWindow.HTMLLinkElement, "href");
fixElementCtrSrcOrHref(iframeWindow, iframeWindow.HTMLScriptElement, "src");
}
/**
* 初始化base标签
*/
export function initBase(iframeWindow: Window, url: string): void {
const iframeDocument = iframeWindow.document;
const baseElement = iframeDocument.createElement("base");
const iframeUrlElement = anchorElementGenerator(iframeWindow.location.href);
const appUrlElement = anchorElementGenerator(url);
baseElement.setAttribute("href", appUrlElement.protocol + "//" + appUrlElement.host + iframeUrlElement.pathname);
iframeDocument.head.appendChild(baseElement);
}
/**
* 初始化iframe的dom结构
* @param iframeWindow
*/
function initIframeDom(iframeWindow: Window, wujie: WuJie, mainHostPath: string, appHostPath: string): void {
const iframeDocument = iframeWindow.document;
const newDoc = window.document.implementation.createHTMLDocument("");
const newDocumentElement = iframeDocument.importNode(newDoc.documentElement, true);
iframeDocument.documentElement
? iframeDocument.replaceChild(newDocumentElement, iframeDocument.documentElement)
: iframeDocument.appendChild(newDocumentElement);
initBase(iframeWindow, wujie.url);
patchIframeHistory(iframeWindow, appHostPath, mainHostPath);
patchIframeEvents(iframeWindow);
if (wujie.degrade) recordEventListeners(iframeWindow);
syncIframeUrlToWindow(iframeWindow);
patchWindowEffect(iframeWindow);
patchDocumentEffect(iframeWindow);
patchNodeEffect(iframeWindow);
patchRelativeUrlEffect(iframeWindow);
}
/**
* 防止运行主应用的js代码,给子应用带来很多副作用
*/
// TODO 更加准确抓取停止时机
function stopIframeLoading(
iframeWindow: Window,
mainHostPath: string,
appHostPath: string,
appRoutePath: string,
sandbox: WuJie
) {
const oldDoc = iframeWindow.document;
sandbox.iframeReady = new Promise<void>((resolve) => {
function loop() {
setTimeout(() => {
let newDoc = null;
try {
newDoc = iframeWindow.document;
} catch (err) {
newDoc = null;
}
// wait for document ready
if (!newDoc || newDoc == oldDoc) {
loop();
} else {
iframeWindow.stop ? iframeWindow.stop() : iframeWindow.document.execCommand("Stop");
if (!iframeWindow.__WUJIE) {
patchIframeVariable(iframeWindow, sandbox, appHostPath);
}
initIframeDom(iframeWindow, sandbox, mainHostPath, appHostPath);
/**
* 如果有同步优先同步,非同步从url读取
*/
if (!isMatchSyncQueryById(iframeWindow.__WUJIE.id)) {
iframeWindow.history.replaceState(null, "", mainHostPath + appRoutePath);
}
resolve();
}
}, 1);
}
loop();
});
}
export function patchElementEffect(
element: (HTMLElement | Node | ShadowRoot) & { _hasPatch?: boolean },
iframeWindow: Window
): void {
const proxyLocation = iframeWindow.__WUJIE.proxyLocation as Location;
if (element._hasPatch) return;
Object.defineProperties(element, {
baseURI: {
configurable: true,
get: () => proxyLocation.protocol + "//" + proxyLocation.host + proxyLocation.pathname,
set: undefined,
},
ownerDocument: {
configurable: true,
get: () => iframeWindow.document,
},
_hasPatch: { get: () => true },
});
execHooks(iframeWindow.__WUJIE.plugins, "patchElementHook", element, iframeWindow);
}
/**
* 子应用前进后退,同步路由到主应用
* @param iframeWindow
*/
export function syncIframeUrlToWindow(iframeWindow: Window): void {
iframeWindow.addEventListener("hashchange", () => syncUrlToWindow(iframeWindow));
iframeWindow.addEventListener("popstate", () => {
syncUrlToWindow(iframeWindow);
});
}
/**
* iframe插入脚本
* @param scriptResult script请求结果
* @param iframeWindow
* @param rawElement 原始的脚本
*/
export function insertScriptToIframe(
scriptResult: ScriptObject | ScriptObjectLoader,
iframeWindow: Window,
rawElement?: HTMLScriptElement
) {
const { src, module, content, crossorigin, crossoriginType, async, callback, onload } =
scriptResult as ScriptObjectLoader;
const scriptElement = iframeWindow.document.createElement("script");
const nextScriptElement = iframeWindow.document.createElement("script");
const { replace, plugins, proxyLocation } = iframeWindow.__WUJIE;
const jsLoader = getJsLoader({ plugins, replace });
let code = jsLoader(content, src, getCurUrl(proxyLocation));
// 内联脚本
if (content) {
// patch location
if (!iframeWindow.__WUJIE.degrade && !module) {
code = `(function(window, self, global, location) {
${code}
}).bind(window.__WUJIE.proxy)(
window.__WUJIE.proxy,
window.__WUJIE.proxy,
window.__WUJIE.proxy,
window.__WUJIE.proxyLocation,
);`;
}
// 解决 webpack publicPath 为 auto 无法加载资源的问题
Object.defineProperty(scriptElement, "src", { get: () => src || "" });
// 非内联脚本
} else {
// 外联自动触发onload
onload && (scriptElement.onload = onload as (this: GlobalEventHandlers, ev: Event) => any);
src && scriptElement.setAttribute("src", src);
crossorigin && scriptElement.setAttribute("crossorigin", crossoriginType);
}
module && scriptElement.setAttribute("type", "module");
scriptElement.textContent = code || "";
nextScriptElement.textContent =
"if(window.__WUJIE.execQueue && window.__WUJIE.execQueue.length){ window.__WUJIE.execQueue.shift()()}";
const container = rawDocumentQuerySelector.call(iframeWindow.document, "head");
if (/^<!DOCTYPE html/i.test(code)) {
error(WUJIE_TIPS_SCRIPT_ERROR_REQUESTED, scriptResult);
return !async && container.appendChild(nextScriptElement);
}
container.appendChild(scriptElement);
// 调用回调
callback?.(iframeWindow);
// 执行 hooks
execHooks(plugins, "appendOrInsertElementHook", scriptElement, iframeWindow, rawElement);
// 外联转内联调用手动触发onload
content && onload?.();
// async脚本不在执行队列,无需next操作
!async && container.appendChild(nextScriptElement);
}
/**
* 加载iframe替换子应用
* @param src 地址
* @param shadowRoot
*/
export function renderIframeReplaceApp(
src: string,
element: HTMLElement,
degradeAttrs: { [key: string]: any } = {}
): void {
const iframe = window.document.createElement("iframe");
const defaultStyle = "height:100%;width:100%";
setAttrsToElement(iframe, { ...degradeAttrs, src, style: [defaultStyle, degradeAttrs.style].join(";") });
renderElementToContainer(iframe, element);
}
/**
* js沙箱
* 创建和主应用同源的iframe,路径携带了子路由的路由信息
* iframe必须禁止加载html,防止进入主应用的路由逻辑
*/
export function iframeGenerator(
sandbox: WuJie,
attrs: { [key: string]: any },
mainHostPath: string,
appHostPath: string,
appRoutePath: string
): HTMLIFrameElement {
const iframe = window.document.createElement("iframe");
const attrsMerge = { src: mainHostPath, ...attrs, style: "display: none", name: sandbox.id, [WUJIE_DATA_FLAG]: "" };
setAttrsToElement(iframe, attrsMerge);
window.document.body.appendChild(iframe);
const iframeWindow = iframe.contentWindow;
// 变量需要提前注入,在入口函数通过变量防止死循环
patchIframeVariable(iframeWindow, sandbox, appHostPath);
stopIframeLoading(iframeWindow, mainHostPath, appHostPath, appRoutePath, sandbox);
return iframe;
}