How to use EachEvent method of rod Package

Best Rod code snippet using rod.EachEvent

browser.go

Source:browser.go

...254	// Such as proto.PageAddScriptToEvaluateOnNewDocument won't work.255	page.EnableDomain(&proto.PageEnable{})256	return page, nil257}258// EachEvent is similar to Page.EachEvent, but catches events of the entire browser.259func (b *Browser) EachEvent(callbacks ...interface{}) (wait func()) {260	return b.eachEvent("", callbacks...)261}262// WaitEvent waits for the next event for one time. It will also load the data into the event object.263func (b *Browser) WaitEvent(e proto.Event) (wait func()) {264	return b.waitEvent("", e)265}266// waits for the next event for one time. It will also load the data into the event object.267func (b *Browser) waitEvent(sessionID proto.TargetSessionID, e proto.Event) (wait func()) {268	valE := reflect.ValueOf(e)269	valTrue := reflect.ValueOf(true)270	if valE.Kind() != reflect.Ptr {271		valE = reflect.New(valE.Type())272	}273	// dynamically creates a function on runtime:274	//275	// func(ee proto.Event) bool {276	//   *e = *ee277	//   return true278	// }279	fnType := reflect.FuncOf([]reflect.Type{valE.Type()}, []reflect.Type{valTrue.Type()}, false)280	fnVal := reflect.MakeFunc(fnType, func(args []reflect.Value) []reflect.Value {281		valE.Elem().Set(args[0].Elem())282		return []reflect.Value{valTrue}283	})284	return b.eachEvent(sessionID, fnVal.Interface())285}286// If the any callback returns true the event loop will stop.287// It will enable the related domains if not enabled, and restore them after wait ends.288func (b *Browser) eachEvent(sessionID proto.TargetSessionID, callbacks ...interface{}) (wait func()) {289	cbMap := map[string]reflect.Value{}290	restores := []func(){}291	for _, cb := range callbacks {292		cbVal := reflect.ValueOf(cb)293		eType := cbVal.Type().In(0)294		name := reflect.New(eType.Elem()).Interface().(proto.Event).ProtoEvent()295		cbMap[name] = cbVal296		// Only enabled domains will emit events to cdp client.297		// We enable the domains for the event types if it's not enabled.298		// We restore the domains to their previous states after the wait ends.299		domain, _ := proto.ParseMethodName(name)300		if req := proto.GetType(domain + ".enable"); req != nil {301			enable := reflect.New(req).Interface().(proto.Request)302			restores = append(restores, b.EnableDomain(sessionID, enable))303		}304	}305	b, cancel := b.WithCancel()306	messages := b.Event()307	return func() {308		if messages == nil {309			panic("can't use wait function twice")310		}311		defer func() {312			cancel()313			messages = nil314			for _, restore := range restores {315				restore()316			}317		}()318		for msg := range messages {319			if !(sessionID == "" || msg.SessionID == sessionID) {320				continue321			}322			if cbVal, has := cbMap[msg.Method]; has {323				e := reflect.New(proto.GetType(msg.Method))324				msg.Load(e.Interface().(proto.Event))325				args := []reflect.Value{e}326				if cbVal.Type().NumIn() == 2 {327					args = append(args, reflect.ValueOf(msg.SessionID))328				}329				res := cbVal.Call(args)330				if len(res) > 0 {331					if res[0].Bool() {332						return333					}334				}335			}336		}337	}338}339// Event of the browser340func (b *Browser) Event() <-chan *Message {341	src := b.event.Subscribe()342	dst := make(chan *Message)343	go func() {344		defer b.event.Unsubscribe(src)345		defer close(dst)346		for {347			select {348			case <-b.ctx.Done():349				return350			case e, ok := <-src:351				if !ok {352					return353				}354				select {355				case <-b.ctx.Done():356					return357				case dst <- e.(*Message):358				}359			}360		}361	}()362	return dst363}364func (b *Browser) initEvents() {365	b.event = goob.New()366	go func() {367		defer b.event.Close()368		for e := range b.client.Event() {369			b.event.Publish(&Message{370				SessionID: proto.TargetSessionID(e.SessionID),371				Method:    e.Method,372				lock:      &sync.Mutex{},373				data:      e.Params,374			})375		}376	}()377}378func (b *Browser) pageInfo(id proto.TargetTargetID) (*proto.TargetTargetInfo, error) {379	res, err := proto.TargetGetTargetInfo{TargetID: id}.Call(b)380	if err != nil {381		return nil, err382	}383	return res.TargetInfo, nil384}385// IgnoreCertErrors switch. If enabled, all certificate errors will be ignored.386func (b *Browser) IgnoreCertErrors(enable bool) error {387	return proto.SecuritySetIgnoreCertificateErrors{Ignore: enable}.Call(b)388}389// GetCookies from the browser390func (b *Browser) GetCookies() ([]*proto.NetworkCookie, error) {391	res, err := proto.StorageGetCookies{BrowserContextID: b.BrowserContextID}.Call(b)392	if err != nil {393		return nil, err394	}395	return res.Cookies, nil396}397// SetCookies to the browser. If the cookies is nil it will clear all the cookies.398func (b *Browser) SetCookies(cookies []*proto.NetworkCookieParam) error {399	if cookies == nil {400		return proto.StorageClearCookies{BrowserContextID: b.BrowserContextID}.Call(b)401	}402	return proto.StorageSetCookies{403		Cookies:          cookies,404		BrowserContextID: b.BrowserContextID,405	}.Call(b)406}407// WaitDownload returns a helper to get the next download file.408// The file path will be:409//     filepath.Join(dir, info.GUID)410func (b *Browser) WaitDownload(dir string) func() (info *proto.PageDownloadWillBegin) {411	var oldDownloadBehavior proto.BrowserSetDownloadBehavior412	has := b.LoadState("", &oldDownloadBehavior)413	_ = proto.BrowserSetDownloadBehavior{414		Behavior:         proto.BrowserSetDownloadBehaviorBehaviorAllowAndName,415		BrowserContextID: b.BrowserContextID,416		DownloadPath:     dir,417	}.Call(b)418	var start *proto.PageDownloadWillBegin419	waitProgress := b.EachEvent(func(e *proto.PageDownloadWillBegin) {420		start = e421	}, func(e *proto.PageDownloadProgress) bool {422		return start.GUID == e.GUID && e.State == proto.PageDownloadProgressStateCompleted423	})424	return func() *proto.PageDownloadWillBegin {425		defer func() {426			if has {427				_ = oldDownloadBehavior.Call(b)428			} else {429				_ = proto.BrowserSetDownloadBehavior{430					Behavior:         proto.BrowserSetDownloadBehaviorBehaviorDefault,431					BrowserContextID: b.BrowserContextID,432				}.Call(b)433			}...

main.go

Source:main.go

...31	save.MustEval(`document.getElementById('autoCloseInput').click()`)32	save.MustNavigate("chrome-extension://cpneebmdjnifhgajfhmcjmdkoknohimd/src/extension/core/bg/background.html").MustWaitLoad()33	var wg sync.WaitGroup34	var pages sync.Map35	go b.EachEvent(func(e *proto.TargetTargetCreated) {36		switch e.TargetInfo.Type {37		case proto.TargetTargetInfoTypePage:38			{39				_, loaded := pages.LoadOrStore(e.TargetInfo.TargetID, e.TargetInfo)40				if !loaded {41					wg.Add(1)42				}43			}44		}45	})()46	go b.EachEvent(func(e *proto.TargetTargetDestroyed) {47		_, loaded := pages.Load(e.TargetID)48		if loaded {49			wg.Done()50		}51	})()52	// create a new page53	p := b.MustPage().Context(ctx)54	// inject js for some special usage55	p.MustEvalOnNewDocument(preScript)56	p.MustNavigate(defaultUrl).MustWaitLoad()57	//p.EnableDomain(proto.NetworkEnable{})58	//go p.EachEvent(func(e *proto.NetworkRequestWillBeSent) {59	//	fmt.Printf("NetworkRequestWillBeSent %+v\n", e)60	//})()61	//go p.EachEvent(func(e *proto.NetworkResponseReceived) {62	//	fmt.Printf("NetworkResponseReceived  %+v\n", e)63	//})()64	// in this example, it slowly scrolls to the bottom for those lazy loading images65	duration := p.MustEval(postScript)66	// the post script can define how long we wait67	time.Sleep(time.Millisecond * time.Duration(duration.Int()))68	// save page with singlefile69	// https://github.com/puppeteer/puppeteer/issues/2486#issuecomment-60211604770	save.MustEval(`chrome.tabs.query({ active: true }, tabs => {71	chrome.browserAction.onClicked.dispatch(tabs[0]);72})`)73	wg.Wait()74	// check the file path75}...

pdq.go

Source:pdq.go

...14	return browser15}16//Listens for a page load event and gets pageload metrics and memory usage17func onPageLoadEventFired(page *rod.Page, quit chan bool) func() {18	wait := page.EachEvent(19		func(p *proto.PageLoadEventFired) {20			select {21			case <-quit:22				close(quit)23				return24			default:25				getPageLoadTimingsOverlay(page)26				logMemoryUsage(page)27				quit <- true28				break29			}30		})31	return wait32}33//Listens for a target change event, gets FPS overlay, and waits for page load events34func onTargetInfoChanged(browser *rod.Browser) func() {35	wait := browser.EachEvent(36		func(t *proto.TargetTargetInfoChanged) {37			quit := make(chan bool)38			if url != t.TargetInfo.URL {39				page, err := browser.PageFromTarget(t.TargetInfo.TargetID)40				explain(err)41				getShowFPSCounterOverlay(page)42				w := onPageLoadEventFired(page, quit)43				go w()44				url = t.TargetInfo.URL45			}46		})47	return wait48}...

EachEvent

Using AI Code Generation

1import (2func main() {3		Set("disable-web-security", true)4	url := l.MustLaunch()5	page.MustElement("input[name=q]").MustInput("rod")6	page.MustElement("input[name=q]").MustPress(proto.InputKeyEventEnter)7	page.MustEachEvent("Page.frameNavigated", func(e *proto.PageFrameNavigated) {8		fmt.Println(e.Frame.Id)9	})10	kit.Sleep(5 * time.Second)11}

EachEvent

Using AI Code Generation

1import (2func main() {3    l := launcher.New().Headless(false)4    defer l.Cleanup()5    browser := rod.New().ControlURL(l).MustConnect()6    defer browser.MustClose()7    page.MustElement("input").MustInput("rod")8    page.MustElement("input").MustPress("Enter")9    page.MustWaitLoad().MustElement("h3").MustWaitVisible()10    fmt.Println(page.MustElement("h3").MustText())11    page.MustElement("h3").MustClick()12    page.MustWaitLoad()13    fmt.Println(page.MustTitle())14    page.MustEachEvent(func(e *proto.NetworkResponseReceived) {15        fmt.Println(e.RequestId, e.Response.Url)16    })17    page.MustEachEvent(func(e *proto.NetworkResponseReceived) bool {18        fmt.Println(e.RequestId, e.Response.Url)19    })20    page.MustEachEvent(func(e *proto.NetworkResponseReceived) bool {21        fmt.Println(e.RequestId, e.Response.Url)22    })23    page.MustEachEvent(func(e *proto.NetworkResponseReceived) bool {24        fmt.Println(e.RequestId, e.Response.Url)25    }, proto.NetworkResponseReceived)26    page.MustEachEvent(func(e *proto.NetworkResponseReceived) bool {27        fmt.Println(e.RequestId, e.Response.Url)28    }, proto.NetworkResponseReceived, proto.NetworkLoadingFinished)29    page.MustEachEvent(func(e *proto.NetworkResponseReceived) bool {30        fmt.Println(e.RequestId, e.Response.Url)31    }, proto.NetworkResponseReceived, proto.NetworkLoadingFinished, proto.NetworkLoadingFailed)32    page.MustEachEvent(func(e *proto.NetworkResponseReceived) bool {33        fmt.Println(e.RequestId, e.Response.Url)

EachEvent

Using AI Code Generation

1import (2func main() {3    l := launcher.New().Headless(false).Delete(true)4    defer l.Cleanup()5    browser := rod.New().ControlURL(l).MustConnect()6    page.MustWaitLoad()7    input := page.MustElement("input[name='q']")8    input.MustFocus()9    input.MustInput("rod")10    input.MustPress(input.Enter)11    page.MustWaitLoad()12    el := page.MustElement(".g>.rc>.r>a")13    link := el.MustProperty("href")14    fmt.Println(link)15    page.MustElement("body").MustClick("middle", input.Shift)16    page.MustWaitLoad()17    browser.MustClose()18}19import (20func main() {21    l := launcher.New().Headless(false).Delete(true)22    defer l.Cleanup()23    browser := rod.New().Control

EachEvent

Using AI Code Generation

1import (2func main() {3	browser := rod.New().Connect()4	page := browser.Page("")5	page.WaitLoad()6	input := page.Element("#lst-ib")7	input.Input("Hello world")8	page.Element("#tsf > div.tsf-p > div.jsb > center > input[type=\"submit\"]:nth-child(1)").Click()9	page.WaitLoad()10	fmt.Println(page.Title())11	links := page.Elements("a")12	for _, link := range links {13		fmt.Println(link.Text())14	}15	links = page.Elements("a")16	for _, link := range links {17		fmt.Println(link.Text())18	}19	page.EachEvent(func(e *proto.NetworkRequestWillBeSent) {20		fmt.Println(e.Request.URL)21	})22}

EachEvent

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	defer browser.MustClose()5	page.MustElement("#tsf > div:nth-child(2) > div > div.RNNXgb > div > div.a4bIc > input").MustInput("Rod Page")6	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.lJ9FBc > center > input.gNO89b").MustClick()

EachEvent

Using AI Code Generation

1import (2func main() {3	browser := rod.New().Connect()4	page.EachEvent("console", func(e *rod.Event) {5		fmt.Println(e)6	})7}

EachEvent

Using AI Code Generation

1import (2func main() {3	l := launcher.New().Headless(false)4	defer l.Cleanup()5	browser := rod.New().Client(l.Client()).Connect()6	page.WaitLoad()7	title := page.Element("title").Text()8	fmt.Println(title)9	url := page.URL()10	fmt.Println(url)11	links := page.Elements("a")12	fmt.Println(links)13	source := page.HTML()14	fmt.Println(source)15	cookies := page.Cookies()16	fmt.Println(cookies)17	size := page.Viewport()18	fmt.Println(size)19	screenshot := page.Screenshot()20	fmt.Println(screenshot)21	pdf := page.PDF()22	fmt.Println(pdf)23	element := page.Element("body")24	fmt.Println(element)25	elements := page.Elements("body")26	fmt.Println(elements)27	text := page.Element("body").Text()28	fmt.Println(text)29	html := page.Element("body").HTML()30	fmt.Println(html)31	attribute := page.Element("body").Attribute("class")32	fmt.Println(attribute)33	property := page.Element("body").Property("class")34	fmt.Println(property)35	style := page.Element("body").Style("color")36	fmt.Println(style)37	visibleText := page.Element("body").VisibleText()38	fmt.Println(visibleText)39	boundingBox := page.Element("body").BoundingBox

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