alexyuly / viewscript-runtime Goto Github PK

• Make sure we remove event listeners when their HTML elements are removed. See class ElementEventPublisher
• Also provide a way to handle filtering.
• Add methods on ArrayField:
  • filter an array item -> Boolean
  • map an array item -> Any Data

Methods are members of a model bound to another method or a field, with a return type (data) and an optional parameter type (data or function), which are referenced by inputs.

Should we support controlled inputs, like React? Most likely this is useful in many cases so yes we should.

Prerequisite for #11

The groundwork for structures is in place, but their children need to be dynamic (fields)

Proposal:

Allow Field["value"] to be null. This indicates a private, empty field; as opposed to a value of undefined, which is already allowed, and which indicates a public field, whose value will come from the parent element.

• Talk more about the goal of helping app developers working in product-led orgs, especially with complex domains
• Talk about the goal of 100% control, coverage, visibility into the full domain and range of your apps

Add functionality to the Field type, such that the value of a Field instance is optional when the Field instance is provided to a Let or Take instance.

• Define models
  • they have child fields
  • they can have methods: (argument?) => new field
  • they can have actions: (argument?) => side effect on this field
• Create fields of models

Code:

https://github.com/alexyuly/ViewScript-Runtime/blob/main/lib/abstract.ts

Currently, this will throw an error about "private fields".

Does this make sense?

(How) do we want to handle "optional" properties? With a special case, i.e. public fields with an initializer? Or, let all view fields be publicly set by parent elements?

to help support calling native actions and methods on window

for example calls to window.fetch which pass a URL and options

the calls to setTimeout and setInterval in the example in #23

In TodoListApp.d.ts:

I want to update completed: Let<BooleanModel>; to `completed: Let<BooleanModel, false>;

However, the second type argument of Let causes an error in all cases except void. Something is broken about how DataType works, but I don't know what.

https://github.com/alexyuly/ViewScript/blob/main/main.mjs#L10

• In the Bridge, the interface for this should be a function of the event type returning an output
• In the Runtime, parameterized actions will receive events as arguments from streams
  • (How) do we translate JavaScript DOM events into ViewScript models?

• See class View, line 553 at this time

See https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuring-dependabot-version-updates

A task has a contract with outputs and data (like a view), and also actions.

Additionally, a task calls its own stop and start actions:

• stop runs just before a task 1) shuts down or 2) receives an updated contract.
• start runs just after a task 1) starts up or 2) receives an updated contract.

Here's an example task which defines a timer (to be implemented for v0.5)...

export Timer = task {
  looping: boolean or false
  paused: boolean or false
  period: number
  time: output

  id = 0
  stop = window.(clearTimeout id)
  start = do {
    when paused do nothing
    when looping do id.(setTo window.(setInterval time period))
    id.(setTo window.(setTimeout time period))
  }
}

An operation is a new instance of a task, for example:

myTimer = Timer {
  looping = true
  period = 1000
  time = window.console.(log "The timer went off again!")
}