From 59c9e1e4bfc45f843f89da22e0190d19403b4dc6 Mon Sep 17 00:00:00 2001
From: Katrin Shechtman <katrin.shechtman@gmail.com>
Date: Mon, 13 Jun 2016 01:23:45 -0400
Subject: scalajs cross project support as plugin

---
 examples/build-scalajs/js/src/main/scala/App.scala |  22 +++++
 .../build-scalajs/js/src/main/scala/Pictures.scala | 105 +++++++++++++++++++++
 2 files changed, 127 insertions(+)
 create mode 100644 examples/build-scalajs/js/src/main/scala/App.scala
 create mode 100644 examples/build-scalajs/js/src/main/scala/Pictures.scala

(limited to 'examples/build-scalajs/js')

diff --git a/examples/build-scalajs/js/src/main/scala/App.scala b/examples/build-scalajs/js/src/main/scala/App.scala
new file mode 100644
index 0000000..2682936
--- /dev/null
+++ b/examples/build-scalajs/js/src/main/scala/App.scala
@@ -0,0 +1,22 @@
+package prototype
+
+import japgolly.scalajs.react.ReactDOM
+import org.scalajs.dom
+
+import scala.scalajs.js
+import scala.scalajs.js.JSApp
+import scala.scalajs.js.annotation.JSExport
+import scalajs.js.Dynamic.{global => g}
+
+/**
+ * Created by katrin on 2016-04-10.
+ */
+@JSExport("App")
+object App extends JSApp {
+
+  def main(): Unit = {
+
+    val doc = dom.document
+    ReactDOM.render(Pictures.PictureComponent(), doc.getElementById("main"))
+  }
+}
diff --git a/examples/build-scalajs/js/src/main/scala/Pictures.scala b/examples/build-scalajs/js/src/main/scala/Pictures.scala
new file mode 100644
index 0000000..88329ee
--- /dev/null
+++ b/examples/build-scalajs/js/src/main/scala/Pictures.scala
@@ -0,0 +1,105 @@
+package prototype
+
+import japgolly.scalajs.react.{ReactComponentB, BackendScope, Callback}
+import org.scalajs.dom
+
+import scala.scalajs._
+import japgolly.scalajs.react.vdom.all._
+
+import scala.scalajs.js.JSON
+
+/**
+ * Created by katrin on 2016-04-10.
+ */
+object Pictures {
+
+  case class State(pictures: List[Picture], favourites: List[Picture])
+
+  type PicClick = (String, Boolean) => Callback
+
+  class Backend($: BackendScope[Unit, State]) {
+
+    def onPicClick(id: String, favorite: Boolean) =
+      $.state flatMap { s =>
+        if (favorite) {
+          val newPics = s.pictures.map(p => if (p.id == id) p.copy(favorite = false) else p)
+          val newFavs = s.favourites.filter(p => p.id != id)
+          $.modState(_ => State(newPics, newFavs))
+        } else {
+          var newPic: Picture = null
+          val newPics = s.pictures.map(p => if (p.id == id) {
+            newPic = p.copy(favorite = true); newPic
+          } else p)
+          val newFavs = s.favourites.+:(newPic)
+          $.modState(_ => State(newPics, newFavs))
+        }
+      }
+
+    def render(s: State) =
+      div(
+        h1("Popular Pixabay Pics"),
+        pictureList((s.pictures, onPicClick)),
+        h1("Your favorites"),
+        favoriteList((s.favourites, onPicClick)))
+  }
+
+  val picture = ReactComponentB[(Picture, PicClick)]("picture")
+    .render_P { case (p, b) =>
+      div(if (p.favorite) cls := "picture favorite" else cls := "picture", onClick --> b(p.id, p.favorite))(
+        img(src := p.src, title := p.title)
+      )
+    }
+    .build
+
+  val pictureList = ReactComponentB[(List[Picture], PicClick)]("pictureList")
+    .render_P { case (list, b) =>
+      div(`class` := "pictures")(
+        if (list.isEmpty) span("Loading Pics..")
+        else {
+          list.map(p => picture.withKey(p.id)((p, b)))
+        }
+      )
+    }
+    .build
+
+  val favoriteList = ReactComponentB[(List[Picture], PicClick)]("favoriteList")
+    .render_P { case (list, b) =>
+      div(`class` := "favorites")(
+        if (list.isEmpty) span("Click an image to mark as  favorite")
+        else {
+          list.map(p => picture.withKey(p.id)((p, b)))
+        }
+      )
+    }
+    .build
+
+  val PictureComponent = ReactComponentB[Unit]("PictureComponent")
+    .initialState(State(Nil, Nil))
+    .renderBackend[Backend]
+    .componentDidMount(scope => Callback {
+      import scalajs.js.Dynamic.{global => g}
+      def isDefined(g: js.Dynamic): Boolean =
+        g.asInstanceOf[js.UndefOr[AnyRef]].isDefined
+      val url = "http://localhost:3000/data"
+      val xhr = new dom.XMLHttpRequest()
+      xhr.open("GET", url)
+      xhr.onload = { (e: dom.Event) =>
+        if (xhr.status == 200) {
+          val result =  JSON.parse(xhr.responseText)
+          if (isDefined(result) && isDefined(result.hits)) {
+            val hits = result.hits.asInstanceOf[js.Array[js.Dynamic]]
+            val pics = hits.toList.map(item => Picture(
+              item.id.toString,
+              item.pageURL.toString,
+              item.previewURL.toString,
+              if (item.tags != null) item.tags.asInstanceOf[js.Array[String]].mkString(",") else ""))
+              //if (item.caption != null) item.caption.text.toString else ""))
+            scope.modState(_ => State(pics, Nil)).runNow()
+          }
+        }
+      }
+      xhr.send()
+    })
+    .buildU
+
+}
-- 
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