[webview_flutter] iOS now can open iframe links and target _blank links

[rodruiz]

Description

iOS will be able to open iframe links, ads and target _blank links.

Related Issues

Fix issue 28875.

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[rodruiz]

Hi,
the solution is to cancel the navigation and load the request with loadRequest: again. This will be come the similar behavior like UIWebView which always open new window in the current frame.
To have an implementation of WKUIDelegate and set it to _webview.UIDelegate.
For more info see stackoverflow.
Thanks.

[rodruiz]

@googlebot I fixed it.

[rodruiz]

Hi @amirh, could you review this PR?
Thanks!

[rodruiz]

Hi @amirh, any plans to review this PR?
Thanks!

[rodruiz]

Hi @amirh, could you review this PR please?
Thanks!

[rodruiz]

Hi @amirh, could you review this PR please?
Thanks!

[amirh]

Thanks!

We'd need to test opening a _blank link before this can land, I we can add an e2e test case to cover it here: https://github.com/flutter/plugins/blob/master/packages/webview_flutter/example/test_driver/webview_flutter_e2e.dart

[amirh]

Should this setting be controllable by the app developer? any I'd suggest splitting these 2 features to separate PRs

[amirh]

I wonder whether we should consider this a breaking change (as it will break any app relying on these links not being opened)

[amirh]

Closing in favor of #2500