"use strict";
/**
* @license
* Copyright 2017 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.FrameManager = void 0;
const CDPSession_js_1 = require("../api/CDPSession.js");
const Frame_js_1 = require("../api/Frame.js");
const EventEmitter_js_1 = require("../common/EventEmitter.js");
const util_js_1 = require("../common/util.js");
const assert_js_1 = require("../util/assert.js");
const Deferred_js_1 = require("../util/Deferred.js");
const disposable_js_1 = require("../util/disposable.js");
const ErrorLike_js_1 = require("../util/ErrorLike.js");
const CdpPreloadScript_js_1 = require("./CdpPreloadScript.js");
const CDPSession_js_2 = require("./CDPSession.js");
const Connection_js_1 = require("./Connection.js");
const DeviceRequestPrompt_js_1 = require("./DeviceRequestPrompt.js");
const ExecutionContext_js_1 = require("./ExecutionContext.js");
const Frame_js_2 = require("./Frame.js");
const FrameManagerEvents_js_1 = require("./FrameManagerEvents.js");
const FrameTree_js_1 = require("./FrameTree.js");
const IsolatedWorlds_js_1 = require("./IsolatedWorlds.js");
const NetworkManager_js_1 = require("./NetworkManager.js");
const TIME_FOR_WAITING_FOR_SWAP = 100; // ms.
/**
* A frame manager manages the frames for a given {@link Page | page}.
*
* @internal
*/
class FrameManager extends EventEmitter_js_1.EventEmitter {
#page;
#networkManager;
#timeoutSettings;
#isolatedWorlds = new Set();
#client;
#scriptsToEvaluateOnNewDocument = new Map();
#bindings = new Set();
_frameTree = new FrameTree_js_1.FrameTree();
/**
* Set of frame IDs stored to indicate if a frame has received a
* frameNavigated event so that frame tree responses could be ignored as the
* frameNavigated event usually contains the latest information.
*/
#frameNavigatedReceived = new Set();
#deviceRequestPromptManagerMap = new WeakMap();
#frameTreeHandled;
get timeoutSettings() {
return this.#timeoutSettings;
}
get networkManager() {
return this.#networkManager;
}
get client() {
return this.#client;
}
constructor(client, page, timeoutSettings) {
super();
this.#client = client;
this.#page = page;
this.#networkManager = new NetworkManager_js_1.NetworkManager(this);
this.#timeoutSettings = timeoutSettings;
this.setupEventListeners(this.#client);
client.once(CDPSession_js_1.CDPSessionEvent.Disconnected, () => {
this.#onClientDisconnect().catch(util_js_1.debugError);
});
}
/**
* Called when the frame's client is disconnected. We don't know if the
* disconnect means that the frame is removed or if it will be replaced by a
* new frame. Therefore, we wait for a swap event.
*/
async #onClientDisconnect() {
const mainFrame = this._frameTree.getMainFrame();
if (!mainFrame) {
return;
}
for (const child of mainFrame.childFrames()) {
this.#removeFramesRecursively(child);
}
const swapped = Deferred_js_1.Deferred.create({
timeout: TIME_FOR_WAITING_FOR_SWAP,
message: 'Frame was not swapped',
});
mainFrame.once(Frame_js_1.FrameEvent.FrameSwappedByActivation, () => {
swapped.resolve();
});
try {
await swapped.valueOrThrow();
}
catch (err) {
this.#removeFramesRecursively(mainFrame);
}
}
/**
* When the main frame is replaced by another main frame,
* we maintain the main frame object identity while updating
* its frame tree and ID.
*/
async swapFrameTree(client) {
this.#client = client;
(0, assert_js_1.assert)(this.#client instanceof CDPSession_js_2.CdpCDPSession, 'CDPSession is not an instance of CDPSessionImpl.');
const frame = this._frameTree.getMainFrame();
if (frame) {
this.#frameNavigatedReceived.add(this.#client._target()._targetId);
this._frameTree.removeFrame(frame);
frame.updateId(this.#client._target()._targetId);
this._frameTree.addFrame(frame);
frame.updateClient(client);
}
this.setupEventListeners(client);
client.once(CDPSession_js_1.CDPSessionEvent.Disconnected, () => {
this.#onClientDisconnect().catch(util_js_1.debugError);
});
await this.initialize(client, frame);
await this.#networkManager.addClient(client);
if (frame) {
frame.emit(Frame_js_1.FrameEvent.FrameSwappedByActivation, undefined);
}
}
async registerSpeculativeSession(client) {
await this.#networkManager.addClient(client);
}
setupEventListeners(session) {
session.on('Page.frameAttached', async (event) => {
await this.#frameTreeHandled?.valueOrThrow();
this.#onFrameAttached(session, event.frameId, event.parentFrameId);
});
session.on('Page.frameNavigated', async (event) => {
this.#frameNavigatedReceived.add(event.frame.id);
await this.#frameTreeHandled?.valueOrThrow();
void this.#onFrameNavigated(event.frame, event.type);
});
session.on('Page.navigatedWithinDocument', async (event) => {
await this.#frameTreeHandled?.valueOrThrow();
this.#onFrameNavigatedWithinDocument(event.frameId, event.url);
});
session.on('Page.frameDetached', async (event) => {
await this.#frameTreeHandled?.valueOrThrow();
this.#onFrameDetached(event.frameId, event.reason);
});
session.on('Page.frameStartedLoading', async (event) => {
await this.#frameTreeHandled?.valueOrThrow();
this.#onFrameStartedLoading(event.frameId);
});
session.on('Page.frameStoppedLoading', async (event) => {
await this.#frameTreeHandled?.valueOrThrow();
this.#onFrameStoppedLoading(event.frameId);
});
session.on('Runtime.executionContextCreated', async (event) => {
await this.#frameTreeHandled?.valueOrThrow();
this.#onExecutionContextCreated(event.context, session);
});
session.on('Page.lifecycleEvent', async (event) => {
await this.#frameTreeHandled?.valueOrThrow();
this.#onLifecycleEvent(event);
});
}
async initialize(client, frame) {
try {
this.#frameTreeHandled?.resolve();
this.#frameTreeHandled = Deferred_js_1.Deferred.create();
// We need to schedule all these commands while the target is paused,
// therefore, it needs to happen synchroniously. At the same time we
// should not start processing execution context and frame events before
// we received the initial information about the frame tree.
await Promise.all([
this.#networkManager.addClient(client),
client.send('Page.enable'),
client.send('Page.getFrameTree').then(({ frameTree }) => {
this.#handleFrameTree(client, frameTree);
this.#frameTreeHandled?.resolve();
}),
client.send('Page.setLifecycleEventsEnabled', { enabled: true }),
client.send('Runtime.enable').then(() => {
return this.#createIsolatedWorld(client, util_js_1.UTILITY_WORLD_NAME);
}),
...(frame
? Array.from(this.#scriptsToEvaluateOnNewDocument.values())
: []).map(script => {
return frame?.addPreloadScript(script);
}),
...(frame ? Array.from(this.#bindings.values()) : []).map(binding => {
return frame?.addExposedFunctionBinding(binding);
}),
]);
}
catch (error) {
this.#frameTreeHandled?.resolve();
// The target might have been closed before the initialization finished.
if ((0, ErrorLike_js_1.isErrorLike)(error) && (0, Connection_js_1.isTargetClosedError)(error)) {
return;
}
throw error;
}
}
page() {
return this.#page;
}
mainFrame() {
const mainFrame = this._frameTree.getMainFrame();
(0, assert_js_1.assert)(mainFrame, 'Requesting main frame too early!');
return mainFrame;
}
frames() {
return Array.from(this._frameTree.frames());
}
frame(frameId) {
return this._frameTree.getById(frameId) || null;
}
async addExposedFunctionBinding(binding) {
this.#bindings.add(binding);
await Promise.all(this.frames().map(async (frame) => {
return await frame.addExposedFunctionBinding(binding);
}));
}
async removeExposedFunctionBinding(binding) {
this.#bindings.delete(binding);
await Promise.all(this.frames().map(async (frame) => {
return await frame.removeExposedFunctionBinding(binding);
}));
}
async evaluateOnNewDocument(source) {
const { identifier } = await this.mainFrame()
._client()
.send('Page.addScriptToEvaluateOnNewDocument', {
source,
});
const preloadScript = new CdpPreloadScript_js_1.CdpPreloadScript(this.mainFrame(), identifier, source);
this.#scriptsToEvaluateOnNewDocument.set(identifier, preloadScript);
await Promise.all(this.frames().map(async (frame) => {
return await frame.addPreloadScript(preloadScript);
}));
return { identifier };
}
async removeScriptToEvaluateOnNewDocument(identifier) {
const preloadScript = this.#scriptsToEvaluateOnNewDocument.get(identifier);
if (!preloadScript) {
throw new Error(`Script to evaluate on new document with id ${identifier} not found`);
}
this.#scriptsToEvaluateOnNewDocument.delete(identifier);
await Promise.all(this.frames().map(frame => {
const identifier = preloadScript.getIdForFrame(frame);
if (!identifier) {
return;
}
return frame
._client()
.send('Page.removeScriptToEvaluateOnNewDocument', {
identifier,
})
.catch(util_js_1.debugError);
}));
}
onAttachedToTarget(target) {
if (target._getTargetInfo().type !== 'iframe') {
return;
}
const frame = this.frame(target._getTargetInfo().targetId);
if (frame) {
frame.updateClient(target._session());
}
this.setupEventListeners(target._session());
void this.initialize(target._session(), frame);
}
_deviceRequestPromptManager(client) {
let manager = this.#deviceRequestPromptManagerMap.get(client);
if (manager === undefined) {
manager = new DeviceRequestPrompt_js_1.DeviceRequestPromptManager(client, this.#timeoutSettings);
this.#deviceRequestPromptManagerMap.set(client, manager);
}
return manager;
}
#onLifecycleEvent(event) {
const frame = this.frame(event.frameId);
if (!frame) {
return;
}
frame._onLifecycleEvent(event.loaderId, event.name);
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.LifecycleEvent, frame);
frame.emit(Frame_js_1.FrameEvent.LifecycleEvent, undefined);
}
#onFrameStartedLoading(frameId) {
const frame = this.frame(frameId);
if (!frame) {
return;
}
frame._onLoadingStarted();
}
#onFrameStoppedLoading(frameId) {
const frame = this.frame(frameId);
if (!frame) {
return;
}
frame._onLoadingStopped();
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.LifecycleEvent, frame);
frame.emit(Frame_js_1.FrameEvent.LifecycleEvent, undefined);
}
#handleFrameTree(session, frameTree) {
if (frameTree.frame.parentId) {
this.#onFrameAttached(session, frameTree.frame.id, frameTree.frame.parentId);
}
if (!this.#frameNavigatedReceived.has(frameTree.frame.id)) {
void this.#onFrameNavigated(frameTree.frame, 'Navigation');
}
else {
this.#frameNavigatedReceived.delete(frameTree.frame.id);
}
if (!frameTree.childFrames) {
return;
}
for (const child of frameTree.childFrames) {
this.#handleFrameTree(session, child);
}
}
#onFrameAttached(session, frameId, parentFrameId) {
let frame = this.frame(frameId);
if (frame) {
const parentFrame = this.frame(parentFrameId);
if (session && parentFrame && frame.client !== parentFrame?.client) {
// If an OOP iframes becomes a normal iframe
// again it is first attached to the parent frame before the
// target is removed.
frame.updateClient(session);
}
return;
}
frame = new Frame_js_2.CdpFrame(this, frameId, parentFrameId, session);
this._frameTree.addFrame(frame);
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.FrameAttached, frame);
}
async #onFrameNavigated(framePayload, navigationType) {
const frameId = framePayload.id;
const isMainFrame = !framePayload.parentId;
let frame = this._frameTree.getById(frameId);
// Detach all child frames first.
if (frame) {
for (const child of frame.childFrames()) {
this.#removeFramesRecursively(child);
}
}
// Update or create main frame.
if (isMainFrame) {
if (frame) {
// Update frame id to retain frame identity on cross-process navigation.
this._frameTree.removeFrame(frame);
frame._id = frameId;
}
else {
// Initial main frame navigation.
frame = new Frame_js_2.CdpFrame(this, frameId, undefined, this.#client);
}
this._frameTree.addFrame(frame);
}
frame = await this._frameTree.waitForFrame(frameId);
frame._navigated(framePayload);
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.FrameNavigated, frame);
frame.emit(Frame_js_1.FrameEvent.FrameNavigated, navigationType);
}
async #createIsolatedWorld(session, name) {
const key = `${session.id()}:${name}`;
if (this.#isolatedWorlds.has(key)) {
return;
}
await session.send('Page.addScriptToEvaluateOnNewDocument', {
source: `//# sourceURL=${util_js_1.PuppeteerURL.INTERNAL_URL}`,
worldName: name,
});
await Promise.all(this.frames()
.filter(frame => {
return frame.client === session;
})
.map(frame => {
// Frames might be removed before we send this, so we don't want to
// throw an error.
return session
.send('Page.createIsolatedWorld', {
frameId: frame._id,
worldName: name,
grantUniveralAccess: true,
})
.catch(util_js_1.debugError);
}));
this.#isolatedWorlds.add(key);
}
#onFrameNavigatedWithinDocument(frameId, url) {
const frame = this.frame(frameId);
if (!frame) {
return;
}
frame._navigatedWithinDocument(url);
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.FrameNavigatedWithinDocument, frame);
frame.emit(Frame_js_1.FrameEvent.FrameNavigatedWithinDocument, undefined);
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.FrameNavigated, frame);
frame.emit(Frame_js_1.FrameEvent.FrameNavigated, 'Navigation');
}
#onFrameDetached(frameId, reason) {
const frame = this.frame(frameId);
if (!frame) {
return;
}
switch (reason) {
case 'remove':
// Only remove the frame if the reason for the detached event is
// an actual removement of the frame.
// For frames that become OOP iframes, the reason would be 'swap'.
this.#removeFramesRecursively(frame);
break;
case 'swap':
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.FrameSwapped, frame);
frame.emit(Frame_js_1.FrameEvent.FrameSwapped, undefined);
break;
}
}
#onExecutionContextCreated(contextPayload, session) {
const auxData = contextPayload.auxData;
const frameId = auxData && auxData.frameId;
const frame = typeof frameId === 'string' ? this.frame(frameId) : undefined;
let world;
if (frame) {
// Only care about execution contexts created for the current session.
if (frame.client !== session) {
return;
}
if (contextPayload.auxData && contextPayload.auxData['isDefault']) {
world = frame.worlds[IsolatedWorlds_js_1.MAIN_WORLD];
}
else if (contextPayload.name === util_js_1.UTILITY_WORLD_NAME) {
// In case of multiple sessions to the same target, there's a race between
// connections so we might end up creating multiple isolated worlds.
// We can use either.
world = frame.worlds[IsolatedWorlds_js_1.PUPPETEER_WORLD];
}
}
// If there is no world, the context is not meant to be handled by us.
if (!world) {
return;
}
const context = new ExecutionContext_js_1.ExecutionContext(frame?.client || this.#client, contextPayload, world);
world.setContext(context);
}
#removeFramesRecursively(frame) {
for (const child of frame.childFrames()) {
this.#removeFramesRecursively(child);
}
frame[disposable_js_1.disposeSymbol]();
this._frameTree.removeFrame(frame);
this.emit(FrameManagerEvents_js_1.FrameManagerEvent.FrameDetached, frame);
frame.emit(Frame_js_1.FrameEvent.FrameDetached, frame);
}
}
exports.FrameManager = FrameManager;
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