Download file from the client side by file handler

Download the selected file list from input appropriate to given element id. Use this method carefully because all files are saving to RAM.

Same as downloadFiles but for stream mode. The method is useful when user want to upload very large files list which is problematic to keep in memory (especially when count of users is more than one).

Downloads form from the client. Useful when when you want to read big amount of fields. Do not use this method for downloading files, however it is possible.

event(submit) { access =>
  access
    .downloadFormData(myForm)
    .flatMap { formData =>
      val picture = data.file("picture") // Array[Byte]
      val title = data.text("title") // String
      access.transition {
        // ... transtion
      }
    }
}

Execute arbitrary JavaScript code on client and get stringified JSON back.

for {
  _ <- access.evalJs("new Date().getTimezoneOffset()").map(offset => ...)
  _ <- access.evalJs(js"$myForm.submit()").map(offset => ...)
} yield ()

Gives json with string, number and boolean fields of object of the event happened in current render phase. Note that is expensive operation which requires network round trip.

Makes focus on the element

Get only file list for input

Applies transition to current state.

Extracts property of element from client-side DOM.

Shortcut for property(id).get(propName).

Publish message to environment.

Register callback that could be invoked from the client side.

// Scala
access.registerCallback("myCallback") { myArg =>
  Future(println(myArg))
}

// JavaScript
Korolev.invokeCallback('myCallback', 'myArgValue');

Purge inputs in given form.

Gives current session id.

Gives current state.

Applies transition to current state and awaits render.

Applies transition to current state.

Upload stream to the client side with selected name, size and mimeType

Shortcut for property(id).get('value).

Shortcut for property(id).get(propName).