Add support for custom async confirmation handler

[krasnoukhov]

This could be useful to people who use custom-styled dialog modals. Obviously this will only work if ember transition is triggered (not a hard refresh).

• Better test for _transitionConfirmed state
• Documentation?

Example using sweetalert:

[krasnoukhov]

@jasonmit @blimmer Please let me know if you think this will be useful, I'm wiling to polish it up 😆

[krasnoukhov]

Hey, any feedback here? I'm wiling to rebase/polish this in case it can be merged

[blimmer]

Hi @krasnoukhov - I think it'd be OK to expose logic like this. The only part I'm not sure about is the _transitionConfirmed state. What do you think about simplifying this logic down to be only the customConfirm method that takes a promise? That way, state wouldn't need to be managed with the _transitionConfirmed property.

[krasnoukhov]

@blimmer Thanks for the feedback! Maybe I'm missing something here, but _transitionConfirmed exists just so we can first abort the transition and then either retry or do nothing. I'm not sure how to achieve this kind of flow with just the promise. Any ideas?

[tylerturdenpants]

@jasonmit @blimmer is there any way that we could get some movement on this? I'd appreciate this being available upstream.

Also, do you need a new maintainer? I'd be willing to do some of the chore work to make sure this is available for Octane.

[jasonmit]

@tylerturdenpants I would love another maintainer :) I am currently not active in the Ember space and would love all the help I can get so that the community does not suffer.

I'll work on adding you here and on npm now. Feel free to ping on twitter @_jasonmit if you have any questions/issues that need my attention.

[tylerturdenpants]

@jasonmit Thank you very much. I handle a few other ember related things so I know my way around. I will make you proud.

[jasonmit]

Should be all set now - invites sent :) Much appreciated!