Improve LiveView trait

core/src/TestLiveView.scala

@@ -0,0 +1,54 @@
+import scalive.*
+
+final case class MyModel(cls: String = "text-xs", bool: Boolean = true)
+final case class Elem(name: String, age: Int)
+
+class TestView extends LiveView[TestView.Cmd]:
+  import TestView.Cmd.*
+
+  private val textCls  = LiveState.Key[String]
+  private val someBool = LiveState.Key[Boolean]
+  private val elems    = LiveState.Key[List[Elem]]
+
+  def mount(state: LiveState): LiveState =
+    state
+      .set(textCls, "text-xs")
+      .set(someBool, true)
+      .set(
+        elems,
+        List(
+          Elem("a", 10),
+          Elem("b", 15),
+          Elem("c", 20)
+        )
+      )
+
+  def handleCommand(cmd: TestView.Cmd, state: LiveState): LiveState = cmd match
+    case UpdateElems(es)    => state.set(elems, es)
+    case UpdateBool(b)      => state.set(someBool, b)
+    case UpdateTextCls(cls) => state.set(textCls, cls)
+
+  val render =
+    div(
+      idAttr    := "42",
+      cls       := textCls,
+      draggable := someBool,
+      disabled  := someBool,
+      ul(
+        elems.splitByIndex(elem =>
+          li(
+            "Nom: ",
+            elem(_.name),
+            " Age: ",
+            elem(_.age.toString)
+          )
+        )
+      )
+    )
+end TestView
+
+object TestView:
+  enum Cmd:
+    case UpdateElems(es: List[Elem])
+    case UpdateBool(b: Boolean)
+    case UpdateTextCls(cls: String)