Add NumberBox widget

[WinXaito]

Pre-launch Checklist

• I have run dartfmt on all changed files
• I have updated CHANGELOG.md with my changes
• I have run "optimize/organize imports" on all changed files
• I have addressed all analyzer warnings as best I could
• I have added/updated relevant documentation
• I have run flutter pub publish --dry-run and addressed any warnings

Compact mode:

Inline mode:

[bdlukaa]

When the controller value is changed, the text selection cursor should be changed to the end instead of being at the start

[WinXaito]

I really have no idea how to do it.

The overlay must be present, when textbox have focus (and when overlay is open, the focus must stay on textbox !) and textbox must be editable when overlay is open.

So, with the dropdown overlay solution, when the overlay is open the focus on textbox is lost and nothing stay editable...

[bdlukaa]

@WinXaito IconButton requests focus everytime the user pressed the button. You can create your own button that do not request focus. Also, you can use a FocusNode to request the focus back to the text box if it's by any mean lost

[ricardoboss]

@WinXaito are you planning on completing this?

[WinXaito]

Yup, but I don't know when.

I checked this today. I think that will be simpler with the new Flyout rework. I will try to take a look on that this week.

[bdlukaa]

EditableComboBox may be similar to this

[WinXaito]

Closing in favor of #771