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TODO.md

File metadata and controls

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Mandatory

  • AttachedProperties (Wpfish)
  • Solution for multiple content properties / templates + slots

Avalonia

  • .HorizontalAlignment(HorizontalAlignment.Center) -> Control.HAlign.Center
  • Think about some way for css-like styling
  • Provide some convenience for: type App() =

New Ideas / Brainstorm

  • onRender (direct html element access), onMount, onUnmount
  • timer / Observables
  • SVG API
  • Vide als .fsx file und dann einen C# SourceGen
  • Work this idea out: Shadowing and defaults 
      type [<AutoOpen>] AvaloniaControlsEx =
      static member inline TextBlock =
          AvaloniaControlBuilders.TextBlock().onInit(fun x -> x.node.FontSize <- 80.0)

      open type Vide.UI.AvaloniaControls
      open type AvaloniaControlsEx
  • [] for all API factories? That would make open type Vide.UI.AvaloniaControls unnecessary.

Useful (already discovered)

  • "Resetting" views
  • RawSpan / Way of emitting HTML (not only text)
  • async
    • Restart- und Retrigger-Verhalten
    • CancellationToken
    • Error handling
    • Timeouts
    • async button ("wait for click")
    • Maybe don't use later/promise, but async because of cancellation
    • UseCase: "Until" (geht schon jetzt)
    • UseCase: See AsyncWithSubsequentCalls // TODO: Interesting use case for component result // handling and ordering / evaluation
  • Components
    • reset component / state from outside
    • Templates / slots
    • Provide an "element" function
    • yield support for fragments <> <.... <>
    • Welche Arten?
      • CompoundComponents (=vide { ... })
      • RenderComponents (die die direkt auf ctx zugreuif)
    • Gutes Beispiel: Aus "input" eine "checkbox"-Komponente machen
    • Components with events
  • Elements list + Remove / change / etc.
    • Provide an overload in BuilderBricks.for
    • call it VideList :)

Performance / Optimizations / Robustheit

  • More [] on builder methods etc.

  • 2 Property-APIs: For each Property: 1 for Init-Only and 1 for OnEval

  • Compare current values and only set when different (also in 'bind' methods)

    • Mandatory for bind in conjunction with: [] static member Text(this: #AvaloniaControlBuilders.TextBox, value) = this.onEval(fun x -> if x.node.Text <> value then x.node.Text <- value)

  • Optimize "EvaluateView"

  • Perf

    • diffing
    • instead of storing attr and events in the builder, they should have a direct effect on the underlying HTMLElement

  • MemLeaks bei evt reg?

  • Testcase: For-Loop mit disjunktem State -> wie verhält sich das?

Samples

  • Conditional Attributes
  • Conditional Elements
  • State-Verschachtelungen (z.B. div in div mit jeweils State) oder State-In-List

Propably not

  • Vide as no single case DU -> inlineIfLambda

  • HTML Api

    • globals as base class
    • "add className"
    • className + class'
    • Properties / Ctor initialization type X(?myProp: int) = let mutable _myProp = defaultArg myProp 0 member this.myProp(xxx) = _myProp <- xxx member this.myProp() = _myProp
    • Other events like checked change
    • hr, br etc. sollen Void sein
    • Events:
      • Overload ohne Argumente (Evaluiert nur)
      • Event soll ein Arg bekommen mit
        • Event (Fable)
        • Node
        • Eventkontext mit "TriggerEval: bool"
    • Input soll automatisch "OnChange" auslösen
    • Kontext weiter abstrahieren, damit man ohne Browser testen kann
    • input: checked / radio / etc.
    • form elements

  • "Placeholder": A box that can be used later to place elements into

HTML Api Gen

  • Don't call just ToString for attr values
  • Enum types
  • Choice types
  • events not as hardcoded list
  • type and member docu
  • elem.attrs.attrs |> List.distinctBy (fun a -> a.name)
  • let x1 = X()config..myProp() let x2 = X(myProp = 12).attrs.myProp() let x2 = X(myProp = 12).attrs.myProp()

Docu

  • Perf: 2versions:

    • a) SingleCaseDU
    • b) Function type + InlineIfLambda

  • IMPORTANT: Do NOT do this, since this is a pitfall that I stumbled acrowss (TODO List Avalonia), and it causes really strange behaviour. Why? Controls are reused! Instead, it's absolutely necessary to always instanciate a new builder (Shadow a new type or use somehow other styling techniques): let Button = Button.Margin(Thickness 5.0) let TextBlock = TextBlock.Margin(Thickness 5.0) let TextBox = TextBox.Margin(Thickness 5.0) let DockPanel = DockPanel.LastChildFill(true)