Use native SwiftUI environment keys

[PavelHolec]

Some components might use existing environment keys or modifiers in favour of parameters.

Available related environment keys

• #401
• #404
  • lineLimit, lineSpacing, multilineTextAlignment , textCase, truncationMode : could be used in Text/Heading to be able to inject text-based modifiers inside.
  • A font override could be supported as well.
• defaultMinListRowHeight
  • can be used to support ListChoice
• accessibilityReduceMotion
  • should be respected whenever we do animations
  • ~~can be also used in snapshot test code to force non-animated version~~ - This environment key is read-only 🤷
• tint
  • can be used to override the accent color of some elements (button, checkbox, switch)

iOS14+ modifiers

• isFocused (iOS14+)
  • could be used whenever we have similar flag or enum
  • works correctly on InputField when used from iOS14+ client
• controlSize (iOS15+)
  • could be used for sizing Badges or Buttons (whenever we have size enum)

Related modifiers

• foregroundColor() and tint() (iOS15+):
  • write-only modifier 🤷 Can be partially accessed by:
    • ForegroundShapeStyle()
    • TintShapeStyle()
    • But we cannot access the underlying UIKit color that we need for the TextLink overlay or other formatting implementation

[sjavora]

https://www.fivestars.blog/articles/swiftui-environment-values/

https://developer.apple.com/documentation/swiftui/environmentvalues