Bindable

The implicit conversion to Binding can be enabled by the following import statement:

import com.thoughtworks.binding.bindable._

Then, a @dom XHTML template can establish data-binding on any parameter as long as a Bindable type class for the parameter type is available.

@dom
def mySection[A: Bindable.Lt[?, String]](parameter: A) = {
  <img class={parameter.bind}/>
}

Note that the ? syntax requires the Scala plug-in kind-projector, which can be enabled by adding the following setting into your build.sbt:

addCompilerPlugin("org.spire-math" %% "kind-projector" % "0.9.10")

import com.thoughtworks.binding._, Binding._
Binding {
  mySection(Binding("my-class-1")).bind.className should be("my-class-1")
  mySection(Constant("my-class-2")).bind.className should be("my-class-2")
}.watch()

And the mySection method also accepts String parameter.

Binding {
  mySection("my-class-3").bind.className should be("my-class-3")
}.watch()

mySection should not accept irrelevant parameter types like scala.List or scala.Int.

"mySection(List.empty)" shouldNot compile
"mySection(42)" shouldNot compile