Add the ability to follow links

[nerdachse]

For this we added another Variant to the BlitzEvent Enum and also made
DocumentLike return an Option which currently just has
one Variant for following links.

I consider this a working POC, which needs to be fleshed out.
I didn't invest any time to make sure the DioxusSide still works. It
most likely won't because of the change in the trait definition.

@nicoburns If this is about what you want, I am happy to work on this, as my time allows. If I've diverged too far from your vision, that's also fine!

It's a working POC. When I open the readme app and click a link, the Document is replaced.

[nicoburns]

@nerdachse I reckon we ought to create a NavigationProvider trait (not entirely set on the name) similar to the NetProvider trait. And then have the Document accept and store an Arc<dyn NavigationProvider>. That trait can have a method on it to navigate to the new page (and we could later extend it with functionality like "refresh page", "exit application", and maybe even "open new window"), and the implementation of that method can use the proxy as this PR already does.

I don't like the way the current implementation uses the return value, because I think it's non-obvious that this is what the return value would, and also because I think it is likely we will want to add more events in future (possibly even with a single handler generating more than one), and I think it would be difficult to allow for multiple events if using the return value.

[nerdachse]

I agree, that's why I proposed two different implementation strategies.

I like that your solution has a specific Provider and not just the whole EventLoop exposed to the document.

I'll get to it as soon as I can!

[nerdachse]

Still not finished for Dioxus side, but I want to iterate on this, to find a satisfying solution.

Happy to hear your feedback @nicoburns!

[nicoburns]

The basic structure of this looks good. I have suggested a few tweaks in individual comments. Additionally compiling for some apps (dioxus-native, wpt runner) is broken which will need to be fixed before we can land this. You can check all apps by running cargo build --workspace (or checking the CI output).

[nerdachse]

The basic structure of this looks good. I have suggested a few tweaks in individual comments. Additionally compiling for some apps (dioxus-native, wpt runner) is broken which will need to be fixed before we can land this. You can check all apps by running cargo build --workspace (or checking the CI output).

Sure, I just didn't want to waste time. Now that the path forward is clear, I'll fix it :)

[nerdachse]

What this explicitly does not do is set the title of the window accordingly. So when you follow a link to another page, the title stays the current one.

[nerdachse]

@nicoburns when you're ready to merge, please squash. Thanks :)