swiftui_classic-tabview_show-hide

motivation

• swiftUI has quite poor TabView, it doesn't allow you
  • set any icon size
  • set default colors for system icons and labels
  • place more complicated views than simple image
  • resize image for icon just in time
  • hide the tab bar when you don't need it

simplified idea

• place swiftui tabView
• hide it's tab bar forever and use for storing content
• show our own custom tab bar on the specific pages or evven whole view hierarchies
• handle user's interacctions from custom tab bar
• programmatically switch selected tab in swiftui's tabVView

key moments

• navigationViewState
  • stores tabView seleted item
• viewContainers are dedicated to
  • map state to view props
  • pass props to it's view
  • provide a reactions from ui to the business layer
• views
  • show the ui elemnts accoridng to their props
  • handle user's interactions and call related handlers
  • aggrigate view logic