Support indeterminate state (tristate)

[lolmaus]

Currently Ember has no checkbox addon with support for three states. ember-cli-toggle could be the first!

[knownasilya]

How would you see that working visually in a toggle?

[lolmaus]

Naturally, the knob stays in the middle. Could also change its color.

[knownasilya]

Actually, currently this is almost supported. Basically if the value is not a valid value, then it will set a class invalid-state on the component, which could be used to style the element as indeterminate.

[knownasilya]

We can revisit this I think if the value is undefined we set to indeterminate state. This will take some work to update all of the styles to support this. I don't currently have the time to implement this, so if anyone wants to pick it up, I'd be happy to work with you to get it to the finish line.

[lolmaus]

We can revisit this I think if the value is undefined we set to indeterminate state.

I'm afraid this will be a severely breaking change. We can avoid this with an extra param like tristate=true.

[knownasilya]

It could always be a v6 enhancement.