Warning when running page.setDocumentContent #12

lehnenb · 2020-09-22T10:03:27Z

github.com/chromedp/chromedp v0.5.3
github.com/chromedp/cdproto v0.0.0-20200709115526-d1f6fc58448b
Google Chrome 85.0.4183.102
go version go1.14.4 darwin/amd64
MacOs Catalina version 10.15.4

I've been implementing a simple HTML to PDF service.
Everything works perfectly and the program delivers the right output.
However, I noticed that every time I call the page.setDocumentContent I get the following warning:

ERROR: received DOM.documentUpdated when there's no top-level frame

Following is an example of how to trigger the error:

package main

import (
	"context"

	"github.com/chromedp/cdproto/cdp"
	"github.com/chromedp/cdproto/page"
	"github.com/chromedp/chromedp"
)

type pageHandler func(ctx context.Context, frameID cdp.FrameID) error

func main() {
	exCtx, cancel := newExecContext()
	defer cancel()

	newPageExec(exCtx, func(tabCtx context.Context, frameID cdp.FrameID) error {
		page.
			SetDocumentContent(frameID, `
				<html>
					<head></head>
					<body>
						<h1>Test</h1>
					</body>
				</html>
			`).
			Do(tabCtx)

		return nil
	})
}

func newExecContext() (context.Context, context.CancelFunc) {
	allocatorOptions := append(
		chromedp.DefaultExecAllocatorOptions[:],
		chromedp.Flag("headless", true),
		chromedp.Flag("disable-gpu", true),
	)

	ctx, cancel := chromedp.NewExecAllocator(
		context.Background(),
		allocatorOptions...,
	)

	return ctx, cancel
}

func newPageExec(execCtx context.Context, handler pageHandler) {
	newTabCtx, cancel := chromedp.NewContext(execCtx)
	chromedp.Run(newTabCtx, taskHandler(handler))
	cancel()
}

func taskHandler(handler pageHandler) chromedp.Tasks {
	return chromedp.Tasks{
		chromedp.ActionFunc(func(ctx context.Context) error {
			frameTree, err := page.GetFrameTree().Do(ctx)

			if err != nil {
				return err
			}

			err = handler(ctx, frameTree.Frame.ID)

			if err != nil {
				return err
			}

			return nil
		}),
	}
}

ZekeLu · 2021-05-21T08:06:41Z

Moved to chromedp/chromedp#827.

NOTE: Any Issue or Pull Request intended for the cdproto project should be created over https://github.com/chromedp/pdlgen.

Closing.

lehnenb changed the title ~~Warning while setting the document contents~~ Warning when running page.setDocumentContent Sep 22, 2020

ZekeLu mentioned this issue May 21, 2021

Execute action page.SetDocumentContent without executing the chromedp.Navigate action first chromedp/chromedp#827

Closed

ZekeLu closed this as completed May 21, 2021

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Warning when running page.setDocumentContent #12

Warning when running page.setDocumentContent #12

lehnenb commented Sep 22, 2020 •

edited

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ZekeLu commented May 21, 2021 •

edited

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Warning when running page.setDocumentContent #12

Warning when running page.setDocumentContent #12

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lehnenb commented Sep 22, 2020 • edited Loading

ZekeLu commented May 21, 2021 • edited Loading

lehnenb commented Sep 22, 2020 •

edited

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ZekeLu commented May 21, 2021 •

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