Checkbox - bool? - Reset to Indeterminate status by clicking

[boukenka]

Is your feature request related to a problem? Please describe.
Today, if you have a checkbox with the type bool?, it is not possible by clicking the checkbox to reset to an Indeterminate status.

Describe the solution you'd like
I would like to have the following cycle by clicking (if the original status is Indeterminate) :
true, false, indeterminate, true, false, indeterminate, true, false ...
Maybe with a boolean option whose name is 'ResetToIndeterminate' which only applies when the checkbox type is bool??

[henon]

Sure, another suggestion for the parameter's name: TriState
Would be very easy to add this. Will you PR?

[boukenka]

@henon Yes

[boukenka]

I have tried to push the changes (based on the DEV branch). Getting the error message below :

Here are the steps I have followed :

1. git clone --branch dev https://github.com/Garderoben/MudBlazor.git
2. git branch tristate
3. git checkout tristate
4. ...modification of the code ....
5. git add -A
6. git commit -m "TriState parameter addition for MudCheckBox"
7. git push --set-upstream origin tristate

[henon]

Fork it, push your branch to your fork, then open up a PR against dev on MudBlazor

[boukenka]

Thanks for the instructions. It is done.

[henon]

Done.

For the changelog:

• MudCheckbox with T="bool?": added a parameter TriState which allows to cycle it to indeterminate (True -> False -> Null -> True)