Proposal: NumberBox V2 - Polish API with Additional Properties and Events

[SavoySchuler]

Proposal: NumberBox Update - Styling & Properties Polish

Summary

Center NumberBox V2 around polishing API surface by exposing or adding customer requested APIs for additional properties and events.

Rationale

Larger NumberBox features are still blocked on requiring WinUI 3.0, however, a meaningful V2 can still be delivered to active customers by focusing on exposing or adding customer requested properties and events.

See linked issues for each APIs individual rationale/justification.

Scope

Requests to expose APIs:

1. Expose InputScope API:
   a. Proposal Proposal: Expose InputScope property on NumberBox #2710
   b. PR: Set InputScope property to Number in NumberBox's input TextBox #2605
2. Styling APIs: Proposal: NumberBox: Improve the lightweight styling experience #2844
   a. Border Properties: Can't set the border properties of the NumberBox. #1925
   b. NumberBox should respect Background/Foreground properties: NumberBox should respect Background/Foreground properties #2998
   c. Provide a PlaceholderForeground API: Proposal: Provide a PlaceholderForeground API for the NumberBox control #2811
   d. Controls providing a PlaceholderText API should also provide a PlaceholderForeground API:Proposal: Controls providing a PlaceholderText API should also provide a PlaceholderForeground API #2965
3. SpinButtons Tooltips: Proposal: Make the Tooltips of the NumberBox SpinButtons customizable #2808

Requests to add properties, events, theme resources:

1. [Property] Add IsReadOnly / IsValueLocked property: Proposal: Add IsReadOnly / IsValueLocked property to NumberBox #2204
2. [Events] Add Paste, CopyingToClipboard, and CuttingToClipboard Events: Proposal: Add Paste, CopyingToClipboard, and CuttingToClipboard Events to NumberBox #2055
3. [Property] Add 'DeleteButtonVisibility' property: Proposal: Add 'DeleteButtonVisibility' property to NumberBox #2205
4. [Theme Resources] Styling resources for glyphs: Proposal: Provide lightweight styling resources for the glyphs of the NumberBox's spin buttons #2789

Important Notes

Open Questions

[robloo]

I will circle back around to number 1 (#2710) hopefully this weekend and open a PR.

[robloo]

I'll add the IsReadOnly property as well.

[myokeeh]

When is IsReadOnly going to be available for NumberBox?

[robloo]

@myokeeh Might be best to talk about that in the other issue #2204. I've heard zero movement on any updates to NumberBox. Microsoft is putting all their resources into WinUI 3 and only working on must-haves. All supplemental development like this seems to be on hold.

I added the InputScope property and that PR ended up taking months to get merged (when it should have been days). Needless to say I don't have a lot of motivation to add an IsReadOnly property right now. I'm not even sure I'll be using WinUI a year from now based on how things are progressing.

[myokeeh]

@SavoySchuler, this an example of the sentiment I have that I expressed in the last community call that it seems everything we need now is always a year away. #2204 is from April 1, 2020. We're literally a week away from 1 year.