How can i handle popups in playwright-java? - webautomation

Question

How can i handle alerts and popups in playwright-java?
there are different methods in API like page.onDialog(), page.onPopup(), what is the difference between them and how can i generate a handle?
//code to launch my browser and url
Playwright playwright = Playwright.create();
Browser browser = playwright.chromium().launch(new LaunchOptions().withHeadless(false).withSlowMo(50));
BrowserContext context = browser.newContext();
Page page = context.newPage();
page.navigate("http://myurl.com");
//had to switch to iframe to click on upload button
Frame mypage = page.frameByName("uploadScreenPage");
//below line is triggering the alert
mypage.setInputFiles("//*[#id='fileUpload']",Path.of("C:\\myFile.jar"));
//using this code to handle alert, which is not working
page.onDialog(dialog -> {dialog.accept();});
unable to accept alert using the above code. also alert has occurred after clicking an element that is inside an iframe. how can i handle such alerts?

Answer 1

Dialogs are messages like an alert or a confirm, whereas popups are new pages, like the one you would get by calling window.open.
This is how you can use it :
page.onDialog(dialog -> {
assertEquals("alert", dialog.type());
assertEquals("", dialog.defaultValue());
assertEquals("yo", dialog.message());
dialog.accept();
});
page.evaluate("alert('yo')");

Answer 2

I am happy to answer this question. I encountered the same situation and find the solution. Please see below:
//Handling Pop-up or new page
Page pgdriver1 = pagedriver.waitForPopup(new Runnable()
{
public void run() {
pagedriver.click("text=\"Analiza\"");
}
});
pgdriver1.click("//button[normalize-space(#aria-label)=\"Close dialog\"]/nx-icon");
I hope this answer your question.

Answer 3

//listening to the alert
page.onDialog(dialog -> {dialog.accept();});
//next line will be action that triggers your alert
page.click("//['clickonsomethingthatopensalert']")