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Avalonia FuncUI Avalonia FuncUI

Develop cross-platform GUI Applications using F# and AvaloniaUI!

GitHub top language GitHub repo size Nuget (with prereleases)


About

FuncUI is a thin layer built on top of AvaloniaUI. It contains abstractions for writing UI applications in different programming styles. It also contains a component & state management system.

FuncUI mostly consists of:

  • Virtual DOM
  • View DSL
  • Component model

Resources

Contributing

Please contribute to this library through issue reports, pull requests, code reviews, documentation, and discussion.

Examples

Example using components

A simple counter made with the component library:

type Components =
    static member Counter () =
        Component (fun ctx ->
            let state = ctx.useState 0
    
            DockPanel.create [
                DockPanel.children [
                    Button.create [
                        Button.onClick (fun _ -> state.Set(state.Current - 1))
                        Button.content "click to decrement"
                    ]
                    Button.create [
                        Button.onClick (fun _ -> state.Set(state.Current + 1))
                        Button.content "click to increment"
                    ]
                    TextBlock.create [
                        TextBlock.dock Dock.Top
                        TextBlock.text (string state.Current)
                    ]
                ]
            ]
        )

Find more examples using components in the Components Examples folder.

Example using Elmish

The same counter as above but using the Avalonia.FuncUI.Elmish package:

module Counter =

    type CounterState = {
        count : int
    }

    let init = {
        count = 0
    }

    type Msg =
        | Increment
        | Decrement

    let update (msg: Msg) (state: CounterState) : CounterState =
        match msg with
        | Increment -> { state with count =  state.count + 1 }
        | Decrement -> { state with count =  state.count - 1 }
    
    let view (state: CounterState) (dispatch): IView =
        DockPanel.create [
            DockPanel.children [
                Button.create [
                    Button.onClick (fun _ -> dispatch Increment)
                    Button.content "click to increment"
                ]
                Button.create [
                    Button.onClick (fun _ -> dispatch Decrement)
                    Button.content "click to decrement" 
                ]
                TextBlock.create [
                    TextBlock.dock Dock.Top
                    TextBlock.text (sprintf "the count is %i" state.count)
                ]
            ]
        ]    

Find more examples using Elmish in the Elmish Examples folder

Maintainer(s)

The current co-maintainers of Avalonia.FuncUI are

  • @JordanMarr
  • @sleepyfran
  • @JaggerJo (project originator)

The default maintainer account for projects under "fsprojects" is @fsprojectsgit - F# Community Project Incubation Space (repo management)

About

Develop cross-plattform GUI Applications using F# and Avalonia!

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