Add CustomDividerItemDecoration.kt and remove unused codes.

app/src/main/java/chat/rocket/android/chatrooms/ui/ChatRoomsFragment.kt

 package chat.rocket.android.chatrooms.ui
 
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.drawable.Drawable
 import android.os.Bundle
 import android.support.v4.app.Fragment
-import android.support.v7.widget.DividerItemDecoration
 import android.support.v7.widget.LinearLayoutManager
+import android.support.v7.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -32,59 +35,49 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        presenter.getChatRooms()
+        presenter.chatRooms()
     }
 
-//    // This is just a sample showing 8 chat rooms (aka user subscription). We need to get it rid in a real word. REMARK: remove this comment and this method.
-//    private fun createDumpData(): List<Chat> {
-//        val filipe = User("1", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-//        val lucio = User("2", "Lucio Maciel", "Lucio Maciel", "busy", "https://open.rocket.chat/avatar/lucio.maciel")
-//        val leonardo = User("3", "Leonardo Aramaki", "leonardo.aramaki", "busy", "https://open.rocket.chat/avatar/leonardo.aramaki")
-//        val sing = User("4", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-//        val hetal = User("5", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-//        val matheus = User("6", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-//        val bestrun = User("7", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-//        val djc = User("8", "3djc", "3djc", "online", "https://open.rocket.chat/avatar/filipe.brito")
-//
-//        val dumpChat1 = Chat(leonardo, "Leonardo Aramaki", "d", "Type something", LocalDateTime.of(2017, 11, 21, 1, 3), 1)
-//        val dumpChat2 = Chat(filipe, "Filipe Brito", "d", "Type something...Type something...Type something", LocalDateTime.of(2017, 11, 22, 1, 3), 150)
-//        val dumpChat3 = Chat(lucio, "Lucio Maciel", "d", "Type something", LocalDateTime.of(2017, 11, 17, 1, 3), 0)
-//        val dumpChat4 = Chat(sing, "mobile-internal", "p", "@aaron.ogle @rafael.kellermann same problem over here. Although all the servers show up on the selection.", LocalDateTime.of(2017, 11, 15, 1, 3), 0)
-//        val dumpChat5 = Chat(hetal, "general", "c", "Has joined the channel.", LocalDateTime.of(2017, 11, 13, 1, 3), 0)
-//        val dumpChat6 = Chat(matheus, "androidnativeapp", "c", "Yes @sttyru, but you'll need to implement from the ground up following the docs at docs.rocket.chat where you can see the REST (HTTP) and Real-Time (WebSockets) calls.", LocalDateTime.of(2017, 11, 14, 1, 3), 0)
-//        val dumpChat7 = Chat(bestrun, "androidnativeapp-2", "c", "Just downloaded .zip and imported into Android Studio then build the project.", LocalDateTime.of(2017, 11, 4, 12, 47), 0)
-//        val dumpChat8 = Chat(djc, "iosnativeapp", "c", "Ok, got confused by the blog announcement that shows a screenshot with github oAuth ! Sorry !", LocalDateTime.of(2017, 11, 4, 12, 43), 0)
-//
-//        // creates a list of chat sorted by lastMessageDateTime attribute.
-//        return listOf(dumpChat1, dumpChat2, dumpChat3, dumpChat4, dumpChat5, dumpChat6, dumpChat7, dumpChat8).sortedByDescending { chat -> chat.lastMessageDateTime }
-//    }
-
-    // REMARK: The presenter should call this method. The presenter also need to sort the chat list by latest message (compared by its date).
-//    private fun showChatList(dataSet: List<Chat>) {
-//        activity?.apply {
-//            recycler_view.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
-//            recycler_view.addItemDecoration(DividerItemDecoration(this, DividerItemDecoration.VERTICAL))
-//            recycler_view.adapter = ChatRoomsAdapter(dataSet.toMutableList(), this)
-//        }
-//    }
-
     override fun showChatRooms(dataSet: MutableList<ChatRoom>) {
         activity?.apply {
             recycler_view.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
-            recycler_view.addItemDecoration(DividerItemDecoration(this, DividerItemDecoration.VERTICAL))
+            recycler_view.addItemDecoration(CustomDividerItemDecoration(this, 144, 32))
             recycler_view.adapter = ChatRoomsAdapter(dataSet, this)
         }
     }
 
-    override fun showLoading() {
-        view_loading.show()
-    }
+    override fun showLoading() = view_loading.show()
+
+    override fun hideLoading() = view_loading.hide()
+
+    override fun showMessage(message: String) = Toast.makeText(activity, message, Toast.LENGTH_SHORT).show()
+}
+
+class CustomDividerItemDecoration(context: Context, private var boundStart: Int = 0, private var boundRight: Int = 0) : RecyclerView.ItemDecoration() {
+    private val attrs = intArrayOf(android.R.attr.listDivider)
+    private var divider: Drawable
 
-    override fun hideLoading() {
-        view_loading.hide()
+    init {
+        val styledAttributes = context.obtainStyledAttributes(attrs)
+        divider = styledAttributes.getDrawable(0)
+        styledAttributes.recycle()
     }
 
-    override fun showMessage(message: String) {
-        Toast.makeText(activity, message, Toast.LENGTH_SHORT).show()
+    override fun onDraw(c: Canvas, parent: RecyclerView, state: RecyclerView.State) {
+        val left = parent.paddingLeft + boundStart
+        val right = (parent.width - parent.paddingRight) - boundRight
+
+        val childCount = parent.childCount
+        for (i in 0 until childCount) {
+            val child = parent.getChildAt(i)
+
+            val params = child.layoutParams as RecyclerView.LayoutParams
+
+            val top = child.bottom + params.bottomMargin
+            val bottom = top + divider.intrinsicHeight
+
+            divider.setBounds(left, top, right, bottom)
+            divider.draw(c)
+        }
     }
 }
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