mirror of
https://github.com/puppeteer/puppeteer
synced 2024-06-14 14:02:48 +00:00
refactor(firefox): split out JSHandle into a separate file (#3945)
This commit is contained in:
Andrey Lushnikov
GitHub
parent
76eecde823
commit
c33be4cae4
391
experimental/puppeteer-firefox/lib/JSHandle.js
Normal file
391
experimental/puppeteer-firefox/lib/JSHandle.js
Normal file
@ -0,0 +1,391 @@
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const {assert, debugError} = require('./helper');
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class JSHandle {
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/**
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* @param {!Frame} frame
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* @param {*} payload
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*/
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constructor(frame, payload) {
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this._frame = frame;
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this._session = this._frame._session;
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this._frameId = this._frame._frameId;
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this._objectId = payload.objectId;
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this._type = payload.type;
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this._subtype = payload.subtype;
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this._protocolValue = {
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unserializableValue: payload.unserializableValue,
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value: payload.value,
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objectId: payload.objectId,
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};
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}
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/**
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* @override
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* @return {string}
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*/
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toString() {
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if (this._objectId)
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return 'JSHandle@' + (this._subtype || this._type);
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return 'JSHandle:' + this._deserializeValue(this._protocolValue);
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}
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/**
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* @param {string} propertyName
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* @return {!Promise<?JSHandle>}
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*/
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async getProperty(propertyName) {
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const objectHandle = await this._frame.evaluateHandle((object, propertyName) => {
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const result = {__proto__: null};
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result[propertyName] = object[propertyName];
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return result;
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}, this, propertyName);
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const properties = await objectHandle.getProperties();
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const result = properties.get(propertyName) || null;
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await objectHandle.dispose();
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return result;
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}
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/**
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* @return {!Promise<Map<string, !JSHandle>>}
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*/
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async getProperties() {
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const response = await this._session.send('Page.getObjectProperties', {
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frameId: this._frameId,
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objectId: this._objectId,
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});
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const result = new Map();
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for (const property of response.properties) {
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result.set(property.name, createHandle(this._frame, property.value, null));
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}
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return result;
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}
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_deserializeValue({unserializableValue, value}) {
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if (unserializableValue === 'Infinity')
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return Infinity;
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if (unserializableValue === '-Infinity')
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return -Infinity;
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if (unserializableValue === '-0')
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return -0;
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if (unserializableValue === 'NaN')
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return NaN;
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return value;
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}
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async jsonValue() {
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if (!this._objectId)
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return this._deserializeValue(this._protocolValue);
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const simpleValue = await this._session.send('Page.evaluate', {
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frameId: this._frameId,
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returnByValue: true,
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functionText: (e => e).toString(),
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args: [this._protocolValue],
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});
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return this._deserializeValue(simpleValue.result);
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}
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/**
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* @return {?ElementHandle}
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*/
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asElement() {
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return null;
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}
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async dispose() {
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if (!this._objectId)
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return;
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await this._session.send('Page.disposeObject', {
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frameId: this._frameId,
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objectId: this._objectId,
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});
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}
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}
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class ElementHandle extends JSHandle {
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/**
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* @return {?Frame}
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*/
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async contentFrame() {
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const {frameId} = await this._session.send('Page.contentFrame', {
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frameId: this._frameId,
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objectId: this._objectId,
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});
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if (!frameId)
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return null;
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const frame = this._frame._page._frames.get(frameId);
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return frame;
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}
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/**
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* @override
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* @return {!ElementHandle}
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*/
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asElement() {
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return this;
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}
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/**
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* @return {!Promise<{width: number, height: number, x: number, y: number}>}
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*/
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async boundingBox() {
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return await this._session.send('Page.getBoundingBox', {
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frameId: this._frameId,
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objectId: this._objectId,
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});
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}
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/**
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* @param {{encoding?: string, path?: string}} options
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*/
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async screenshot(options = {}) {
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const clip = await this._session.send('Page.getBoundingBox', {
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frameId: this._frameId,
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objectId: this._objectId,
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});
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if (!clip)
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throw new Error('Node is either not visible or not an HTMLElement');
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assert(clip.width, 'Node has 0 width.');
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assert(clip.height, 'Node has 0 height.');
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await this._scrollIntoViewIfNeeded();
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return await this._frame._page.screenshot(Object.assign({}, options, {
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clip: {
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x: Math.round(clip.x),
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y: Math.round(clip.y),
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width: Math.round(clip.width),
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height: Math.round(clip.height),
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},
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}));
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}
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/**
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* @returns {!Promise<boolean>}
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*/
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isIntersectingViewport() {
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return this._frame.evaluate(async element => {
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const visibleRatio = await new Promise(resolve => {
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const observer = new IntersectionObserver(entries => {
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resolve(entries[0].intersectionRatio);
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observer.disconnect();
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});
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observer.observe(element);
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// Firefox doesn't call IntersectionObserver callback unless
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// there are rafs.
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requestAnimationFrame(() => {});
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});
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return visibleRatio > 0;
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}, this);
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}
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/**
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* @param {string} selector
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* @return {!Promise<?ElementHandle>}
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*/
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async $(selector) {
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const handle = await this._frame.evaluateHandle(
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(element, selector) => element.querySelector(selector),
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this, selector
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);
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const element = handle.asElement();
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if (element)
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return element;
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await handle.dispose();
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return null;
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}
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/**
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* @param {string} selector
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* @return {!Promise<!Array<!ElementHandle>>}
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*/
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async $$(selector) {
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const arrayHandle = await this._frame.evaluateHandle(
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(element, selector) => element.querySelectorAll(selector),
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this, selector
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);
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const properties = await arrayHandle.getProperties();
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await arrayHandle.dispose();
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const result = [];
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for (const property of properties.values()) {
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const elementHandle = property.asElement();
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if (elementHandle)
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result.push(elementHandle);
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}
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return result;
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}
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/**
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* @param {string} selector
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* @param {Function|String} pageFunction
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* @param {!Array<*>} args
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* @return {!Promise<(!Object|undefined)>}
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*/
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async $eval(selector, pageFunction, ...args) {
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const elementHandle = await this.$(selector);
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if (!elementHandle)
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throw new Error(`Error: failed to find element matching selector "${selector}"`);
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const result = await this._frame.evaluate(pageFunction, elementHandle, ...args);
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await elementHandle.dispose();
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return result;
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}
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/**
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* @param {string} selector
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* @param {Function|String} pageFunction
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* @param {!Array<*>} args
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* @return {!Promise<(!Object|undefined)>}
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*/
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async $$eval(selector, pageFunction, ...args) {
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const arrayHandle = await this._frame.evaluateHandle(
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(element, selector) => Array.from(element.querySelectorAll(selector)),
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this, selector
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);
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const result = await this._frame.evaluate(pageFunction, arrayHandle, ...args);
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await arrayHandle.dispose();
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return result;
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}
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/**
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* @param {string} expression
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* @return {!Promise<!Array<!ElementHandle>>}
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*/
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async $x(expression) {
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const arrayHandle = await this._frame.evaluateHandle(
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(element, expression) => {
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const document = element.ownerDocument || element;
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const iterator = document.evaluate(expression, element, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE);
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const array = [];
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let item;
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while ((item = iterator.iterateNext()))
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array.push(item);
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return array;
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},
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this, expression
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);
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const properties = await arrayHandle.getProperties();
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await arrayHandle.dispose();
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const result = [];
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for (const property of properties.values()) {
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const elementHandle = property.asElement();
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if (elementHandle)
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result.push(elementHandle);
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}
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return result;
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}
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async _scrollIntoViewIfNeeded() {
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const error = await this._frame.evaluate(async(element) => {
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if (!element.isConnected)
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return 'Node is detached from document';
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if (element.nodeType !== Node.ELEMENT_NODE)
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return 'Node is not of type HTMLElement';
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const visibleRatio = await new Promise(resolve => {
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const observer = new IntersectionObserver(entries => {
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resolve(entries[0].intersectionRatio);
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observer.disconnect();
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});
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observer.observe(element);
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// Firefox doesn't call IntersectionObserver callback unless
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// there are rafs.
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requestAnimationFrame(() => {});
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});
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if (visibleRatio !== 1.0)
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element.scrollIntoView({block: 'center', inline: 'center', behavior: 'instant'});
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return false;
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}, this);
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if (error)
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throw new Error(error);
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}
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/**
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* @param {!{delay?: number, button?: string, clickCount?: number}=} options
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*/
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async click(options) {
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await this._scrollIntoViewIfNeeded();
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const {x, y} = await this._clickablePoint();
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await this._frame._page.mouse.click(x, y, options);
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}
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async hover() {
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await this._scrollIntoViewIfNeeded();
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const {x, y} = await this._clickablePoint();
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await this._frame._page.mouse.move(x, y);
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}
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async focus() {
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await this._frame.evaluate(element => element.focus(), this);
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}
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/**
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* @param {string} text
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* @param {{delay: (number|undefined)}=} options
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*/
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async type(text, options) {
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await this.focus();
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await this._frame._page.keyboard.type(text, options);
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}
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/**
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* @param {string} key
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* @param {!{delay?: number}=} options
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*/
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async press(key, options) {
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await this.focus();
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await this._frame._page.keyboard.press(key, options);
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}
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/**
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* @return {!Promise<!{x: number, y: number}>}
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*/
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async _clickablePoint() {
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const result = await this._session.send('Page.getContentQuads', {
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frameId: this._frameId,
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objectId: this._objectId,
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}).catch(debugError);
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if (!result || !result.quads.length)
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throw new Error('Node is either not visible or not an HTMLElement');
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// Filter out quads that have too small area to click into.
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const quads = result.quads.filter(quad => computeQuadArea(quad) > 1);
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if (!quads.length)
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throw new Error('Node is either not visible or not an HTMLElement');
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// Return the middle point of the first quad.
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return computeQuadCenter(quads[0]);
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}
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}
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function createHandle(frame, result, exceptionDetails) {
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if (exceptionDetails) {
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if (exceptionDetails.value)
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throw new Error('Evaluation failed: ' + JSON.stringify(exceptionDetails.value));
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else
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throw new Error('Evaluation failed: ' + exceptionDetails.text + '\n' + exceptionDetails.stack);
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}
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return result.subtype === 'node' ? new ElementHandle(frame, result) : new JSHandle(frame, result);
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}
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function computeQuadArea(quad) {
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// Compute sum of all directed areas of adjacent triangles
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// https://en.wikipedia.org/wiki/Polygon#Simple_polygons
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let area = 0;
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const points = [quad.p1, quad.p2, quad.p3, quad.p4];
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for (let i = 0; i < points.length; ++i) {
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const p1 = points[i];
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const p2 = points[(i + 1) % points.length];
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area += (p1.x * p2.y - p2.x * p1.y) / 2;
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}
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return Math.abs(area);
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}
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function computeQuadCenter(quad) {
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let x = 0, y = 0;
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for (const point of [quad.p1, quad.p2, quad.p3, quad.p4]) {
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x += point.x;
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y += point.y;
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}
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return {x: x / 4, y: y / 4};
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}
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module.exports = {JSHandle, ElementHandle, createHandle};
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@ -7,6 +7,7 @@ const fs = require('fs');
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const mime = require('mime');
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const util = require('util');
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const EventEmitter = require('events');
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const {JSHandle, createHandle} = require('./JSHandle');
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const writeFileAsync = util.promisify(fs.writeFile);
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const readFileAsync = util.promisify(fs.readFile);
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@ -658,108 +659,6 @@ class ConsoleMessage {
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}
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}
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class JSHandle {
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/**
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* @param {!Frame} frame
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* @param {*} payload
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*/
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constructor(frame, payload) {
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this._frame = frame;
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this._session = this._frame._session;
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this._frameId = this._frame._frameId;
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this._objectId = payload.objectId;
|
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this._type = payload.type;
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this._subtype = payload.subtype;
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this._protocolValue = {
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unserializableValue: payload.unserializableValue,
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value: payload.value,
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objectId: payload.objectId,
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};
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}
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/**
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* @override
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* @return {string}
|
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*/
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toString() {
|
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if (this._objectId)
|
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return 'JSHandle@' + (this._subtype || this._type);
|
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return 'JSHandle:' + this._deserializeValue(this._protocolValue);
|
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}
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/**
|
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* @param {string} propertyName
|
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* @return {!Promise<?JSHandle>}
|
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*/
|
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async getProperty(propertyName) {
|
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const objectHandle = await this._frame.evaluateHandle((object, propertyName) => {
|
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const result = {__proto__: null};
|
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result[propertyName] = object[propertyName];
|
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return result;
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}, this, propertyName);
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const properties = await objectHandle.getProperties();
|
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const result = properties.get(propertyName) || null;
|
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await objectHandle.dispose();
|
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return result;
|
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}
|
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|
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/**
|
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* @return {!Promise<Map<string, !JSHandle>>}
|
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*/
|
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async getProperties() {
|
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const response = await this._session.send('Page.getObjectProperties', {
|
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frameId: this._frameId,
|
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objectId: this._objectId,
|
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});
|
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const result = new Map();
|
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for (const property of response.properties) {
|
||||
result.set(property.name, createHandle(this._frame, property.value, null));
|
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}
|
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return result;
|
||||
}
|
||||
|
||||
_deserializeValue({unserializableValue, value}) {
|
||||
if (unserializableValue === 'Infinity')
|
||||
return Infinity;
|
||||
if (unserializableValue === '-Infinity')
|
||||
return -Infinity;
|
||||
if (unserializableValue === '-0')
|
||||
return -0;
|
||||
if (unserializableValue === 'NaN')
|
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return NaN;
|
||||
return value;
|
||||
}
|
||||
|
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async jsonValue() {
|
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if (!this._objectId)
|
||||
return this._deserializeValue(this._protocolValue);
|
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const simpleValue = await this._session.send('Page.evaluate', {
|
||||
frameId: this._frameId,
|
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returnByValue: true,
|
||||
functionText: (e => e).toString(),
|
||||
args: [this._protocolValue],
|
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});
|
||||
return this._deserializeValue(simpleValue.result);
|
||||
}
|
||||
|
||||
/**
|
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* @return {?ElementHandle}
|
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*/
|
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asElement() {
|
||||
return null;
|
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}
|
||||
|
||||
async dispose() {
|
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if (!this._objectId)
|
||||
return;
|
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await this._session.send('Page.disposeObject', {
|
||||
frameId: this._frameId,
|
||||
objectId: this._objectId,
|
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});
|
||||
}
|
||||
}
|
||||
|
||||
function getScreenshotMimeType(options) {
|
||||
// options.type takes precedence over inferring the type from options.path
|
||||
// because it may be a 0-length file with no extension created beforehand (i.e. as a temp file).
|
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@ -779,269 +678,6 @@ function getScreenshotMimeType(options) {
|
||||
return 'image/png';
|
||||
}
|
||||
|
||||
class ElementHandle extends JSHandle {
|
||||
/**
|
||||
* @return {?Frame}
|
||||
*/
|
||||
async contentFrame() {
|
||||
const {frameId} = await this._session.send('Page.contentFrame', {
|
||||
frameId: this._frameId,
|
||||
objectId: this._objectId,
|
||||
});
|
||||
if (!frameId)
|
||||
return null;
|
||||
const frame = this._frame._page._frames.get(frameId);
|
||||
return frame;
|
||||
}
|
||||
|
||||
/**
|
||||
* @override
|
||||
* @return {!ElementHandle}
|
||||
*/
|
||||
asElement() {
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return {!Promise<{width: number, height: number, x: number, y: number}>}
|
||||
*/
|
||||
async boundingBox() {
|
||||
return await this._session.send('Page.getBoundingBox', {
|
||||
frameId: this._frameId,
|
||||
objectId: this._objectId,
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {{encoding?: string, path?: string}} options
|
||||
*/
|
||||
async screenshot(options = {}) {
|
||||
const clip = await this._session.send('Page.getBoundingBox', {
|
||||
frameId: this._frameId,
|
||||
objectId: this._objectId,
|
||||
});
|
||||
if (!clip)
|
||||
throw new Error('Node is either not visible or not an HTMLElement');
|
||||
assert(clip.width, 'Node has 0 width.');
|
||||
assert(clip.height, 'Node has 0 height.');
|
||||
await this._scrollIntoViewIfNeeded();
|
||||
|
||||
return await this._frame._page.screenshot(Object.assign({}, options, {
|
||||
clip: {
|
||||
x: Math.round(clip.x),
|
||||
y: Math.round(clip.y),
|
||||
width: Math.round(clip.width),
|
||||
height: Math.round(clip.height),
|
||||
},
|
||||
}));
|
||||
}
|
||||
|
||||
/**
|
||||
* @returns {!Promise<boolean>}
|
||||
*/
|
||||
isIntersectingViewport() {
|
||||
return this._frame.evaluate(async element => {
|
||||
const visibleRatio = await new Promise(resolve => {
|
||||
const observer = new IntersectionObserver(entries => {
|
||||
resolve(entries[0].intersectionRatio);
|
||||
observer.disconnect();
|
||||
});
|
||||
observer.observe(element);
|
||||
// Firefox doesn't call IntersectionObserver callback unless
|
||||
// there are rafs.
|
||||
requestAnimationFrame(() => {});
|
||||
});
|
||||
return visibleRatio > 0;
|
||||
}, this);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} selector
|
||||
* @return {!Promise<?ElementHandle>}
|
||||
*/
|
||||
async $(selector) {
|
||||
const handle = await this._frame.evaluateHandle(
|
||||
(element, selector) => element.querySelector(selector),
|
||||
this, selector
|
||||
);
|
||||
const element = handle.asElement();
|
||||
if (element)
|
||||
return element;
|
||||
await handle.dispose();
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} selector
|
||||
* @return {!Promise<!Array<!ElementHandle>>}
|
||||
*/
|
||||
async $$(selector) {
|
||||
const arrayHandle = await this._frame.evaluateHandle(
|
||||
(element, selector) => element.querySelectorAll(selector),
|
||||
this, selector
|
||||
);
|
||||
const properties = await arrayHandle.getProperties();
|
||||
await arrayHandle.dispose();
|
||||
const result = [];
|
||||
for (const property of properties.values()) {
|
||||
const elementHandle = property.asElement();
|
||||
if (elementHandle)
|
||||
result.push(elementHandle);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} selector
|
||||
* @param {Function|String} pageFunction
|
||||
* @param {!Array<*>} args
|
||||
* @return {!Promise<(!Object|undefined)>}
|
||||
*/
|
||||
async $eval(selector, pageFunction, ...args) {
|
||||
const elementHandle = await this.$(selector);
|
||||
if (!elementHandle)
|
||||
throw new Error(`Error: failed to find element matching selector "${selector}"`);
|
||||
const result = await this._frame.evaluate(pageFunction, elementHandle, ...args);
|
||||
await elementHandle.dispose();
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} selector
|
||||
* @param {Function|String} pageFunction
|
||||
* @param {!Array<*>} args
|
||||
* @return {!Promise<(!Object|undefined)>}
|
||||
*/
|
||||
async $$eval(selector, pageFunction, ...args) {
|
||||
const arrayHandle = await this._frame.evaluateHandle(
|
||||
(element, selector) => Array.from(element.querySelectorAll(selector)),
|
||||
this, selector
|
||||
);
|
||||
|
||||
const result = await this._frame.evaluate(pageFunction, arrayHandle, ...args);
|
||||
await arrayHandle.dispose();
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} expression
|
||||
* @return {!Promise<!Array<!ElementHandle>>}
|
||||
*/
|
||||
async $x(expression) {
|
||||
const arrayHandle = await this._frame.evaluateHandle(
|
||||
(element, expression) => {
|
||||
const document = element.ownerDocument || element;
|
||||
const iterator = document.evaluate(expression, element, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE);
|
||||
const array = [];
|
||||
let item;
|
||||
while ((item = iterator.iterateNext()))
|
||||
array.push(item);
|
||||
return array;
|
||||
},
|
||||
this, expression
|
||||
);
|
||||
const properties = await arrayHandle.getProperties();
|
||||
await arrayHandle.dispose();
|
||||
const result = [];
|
||||
for (const property of properties.values()) {
|
||||
const elementHandle = property.asElement();
|
||||
if (elementHandle)
|
||||
result.push(elementHandle);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
async _scrollIntoViewIfNeeded() {
|
||||
const error = await this._frame.evaluate(async(element) => {
|
||||
if (!element.isConnected)
|
||||
return 'Node is detached from document';
|
||||
if (element.nodeType !== Node.ELEMENT_NODE)
|
||||
return 'Node is not of type HTMLElement';
|
||||
const visibleRatio = await new Promise(resolve => {
|
||||
const observer = new IntersectionObserver(entries => {
|
||||
resolve(entries[0].intersectionRatio);
|
||||
observer.disconnect();
|
||||
});
|
||||
observer.observe(element);
|
||||
// Firefox doesn't call IntersectionObserver callback unless
|
||||
// there are rafs.
|
||||
requestAnimationFrame(() => {});
|
||||
});
|
||||
if (visibleRatio !== 1.0)
|
||||
element.scrollIntoView({block: 'center', inline: 'center', behavior: 'instant'});
|
||||
return false;
|
||||
}, this);
|
||||
if (error)
|
||||
throw new Error(error);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {!{delay?: number, button?: string, clickCount?: number}=} options
|
||||
*/
|
||||
async click(options) {
|
||||
await this._scrollIntoViewIfNeeded();
|
||||
const {x, y} = await this._clickablePoint();
|
||||
await this._frame._page.mouse.click(x, y, options);
|
||||
}
|
||||
|
||||
async hover() {
|
||||
await this._scrollIntoViewIfNeeded();
|
||||
const {x, y} = await this._clickablePoint();
|
||||
await this._frame._page.mouse.move(x, y);
|
||||
}
|
||||
|
||||
async focus() {
|
||||
await this._frame.evaluate(element => element.focus(), this);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} text
|
||||
* @param {{delay: (number|undefined)}=} options
|
||||
*/
|
||||
async type(text, options) {
|
||||
await this.focus();
|
||||
await this._frame._page.keyboard.type(text, options);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} key
|
||||
* @param {!{delay?: number}=} options
|
||||
*/
|
||||
async press(key, options) {
|
||||
await this.focus();
|
||||
await this._frame._page.keyboard.press(key, options);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @return {!Promise<!{x: number, y: number}>}
|
||||
*/
|
||||
async _clickablePoint() {
|
||||
const result = await this._session.send('Page.getContentQuads', {
|
||||
frameId: this._frameId,
|
||||
objectId: this._objectId,
|
||||
}).catch(debugError);
|
||||
if (!result || !result.quads.length)
|
||||
throw new Error('Node is either not visible or not an HTMLElement');
|
||||
// Filter out quads that have too small area to click into.
|
||||
const quads = result.quads.filter(quad => computeQuadArea(quad) > 1);
|
||||
if (!quads.length)
|
||||
throw new Error('Node is either not visible or not an HTMLElement');
|
||||
// Return the middle point of the first quad.
|
||||
return computeQuadCenter(quads[0]);
|
||||
}
|
||||
}
|
||||
|
||||
function createHandle(frame, result, exceptionDetails) {
|
||||
if (exceptionDetails) {
|
||||
if (exceptionDetails.value)
|
||||
throw new Error('Evaluation failed: ' + JSON.stringify(exceptionDetails.value));
|
||||
else
|
||||
throw new Error('Evaluation failed: ' + exceptionDetails.text + '\n' + exceptionDetails.stack);
|
||||
}
|
||||
return result.subtype === 'node' ? new ElementHandle(frame, result) : new JSHandle(frame, result);
|
||||
}
|
||||
|
||||
class Frame {
|
||||
/**
|
||||
* @param {*} session
|
||||
@ -1810,27 +1446,4 @@ class NavigationWatchdog {
|
||||
}
|
||||
}
|
||||
|
||||
function computeQuadArea(quad) {
|
||||
// Compute sum of all directed areas of adjacent triangles
|
||||
// https://en.wikipedia.org/wiki/Polygon#Simple_polygons
|
||||
let area = 0;
|
||||
const points = [quad.p1, quad.p2, quad.p3, quad.p4];
|
||||
for (let i = 0; i < points.length; ++i) {
|
||||
const p1 = points[i];
|
||||
const p2 = points[(i + 1) % points.length];
|
||||
area += (p1.x * p2.y - p2.x * p1.y) / 2;
|
||||
}
|
||||
return Math.abs(area);
|
||||
}
|
||||
|
||||
function computeQuadCenter(quad) {
|
||||
let x = 0, y = 0;
|
||||
for (const point of [quad.p1, quad.p2, quad.p3, quad.p4]) {
|
||||
x += point.x;
|
||||
y += point.y;
|
||||
}
|
||||
return {x: x / 4, y: y / 4};
|
||||
}
|
||||
|
||||
|
||||
module.exports = {Page};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user