Distinguish between control messages and visible messages

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationAdapter.kt

@@ -3,30 +3,69 @@ package org.thoughtcrime.securesms.conversation.v2
 import android.content.Context
 import android.database.Cursor
 import android.view.ViewGroup
-import androidx.recyclerview.widget.RecyclerView
-import org.thoughtcrime.securesms.conversation.v2.messages.MessageView
+import androidx.recyclerview.widget.RecyclerView.ViewHolder
+import org.thoughtcrime.securesms.conversation.v2.messages.ControlMessageView
+import org.thoughtcrime.securesms.conversation.v2.messages.VisibleMessageView
 import org.thoughtcrime.securesms.database.CursorRecyclerViewAdapter
 import org.thoughtcrime.securesms.database.DatabaseFactory
 import org.thoughtcrime.securesms.database.model.MessageRecord
+import java.lang.IllegalStateException
 
-class ConversationAdapter(context: Context, cursor: Cursor) : CursorRecyclerViewAdapter<ConversationAdapter.ViewHolder>(context, cursor) {
+class ConversationAdapter(context: Context, cursor: Cursor) : CursorRecyclerViewAdapter<ViewHolder>(context, cursor) {
     private val messageDB = DatabaseFactory.getMmsSmsDatabase(context)
 
-    class ViewHolder(val view: MessageView) : RecyclerView.ViewHolder(view)
+    sealed class ViewType(val rawValue: Int) {
+        object Visible : ViewType(0)
+        object Control : ViewType(1)
+
+        companion object {
+
+            val allValues: Map<Int, ViewType> get() = mapOf(
+                Visible.rawValue to Visible,
+                Control.rawValue to Control
+            )
+        }
+    }
+
+    class VisibleMessageViewHolder(val view: VisibleMessageView) : ViewHolder(view)
+    class ControlMessageViewHolder(val view: ControlMessageView) : ViewHolder(view)
+
+    override fun getItemViewType(cursor: Cursor): Int {
+        val message = getMessage(cursor)!!
+        if (message.isExpirationTimerUpdate) { return ViewType.Control.rawValue }
+        return ViewType.Visible.rawValue
+    }
 
     override fun onCreateItemViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val view = MessageView(context)
-        return ViewHolder(view)
+        @Suppress("NAME_SHADOWING")
+        val viewType = ViewType.allValues[viewType]
+        when (viewType) {
+            ViewType.Visible -> {
+                val view = VisibleMessageView(context)
+                return VisibleMessageViewHolder(view)
+            }
+            ViewType.Control -> {
+                val view = ControlMessageView(context)
+                return ControlMessageViewHolder(view)
+            }
+            else -> throw IllegalStateException("Unexpected view type: $viewType.")
+        }
     }
 
     override fun onBindItemViewHolder(viewHolder: ViewHolder, cursor: Cursor) {
         val message = getMessage(cursor)!!
-        viewHolder.view.bind(message)
+        when (viewHolder) {
+            is VisibleMessageViewHolder -> viewHolder.view.bind(message)
+            is ControlMessageViewHolder -> viewHolder.view.bind(message)
+        }
     }
 
-    override fun onItemViewRecycled(holder: ViewHolder?) {
-        holder?.view?.recycle()
-        super.onItemViewRecycled(holder)
+    override fun onItemViewRecycled(viewHolder: ViewHolder?) {
+        when (viewHolder) {
+            is VisibleMessageViewHolder -> viewHolder.view.recycle()
+            is ControlMessageViewHolder -> viewHolder.view.recycle()
+        }
+        super.onItemViewRecycled(viewHolder)
     }
 
     private fun getMessage(cursor: Cursor): MessageRecord? {

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/messages/ControlMessageView.kt

@@ -4,11 +4,11 @@ import android.content.Context
 import android.util.AttributeSet
 import android.view.LayoutInflater
 import android.widget.LinearLayout
-import kotlinx.android.synthetic.main.view_message.view.*
+import kotlinx.android.synthetic.main.view_visible_message.view.*
 import network.loki.messenger.R
 import org.thoughtcrime.securesms.database.model.MessageRecord
 
-class MessageView : LinearLayout {
+class ControlMessageView : LinearLayout {
 
     // region Lifecycle
     constructor(context: Context) : super(context) {
@@ -24,13 +24,13 @@ class MessageView : LinearLayout {
     }
 
     private fun setUpViewHierarchy() {
-        LayoutInflater.from(context).inflate(R.layout.view_message, this)
+        LayoutInflater.from(context).inflate(R.layout.view_control_message, this)
     }
     // endregion
 
     // region Updating
     fun bind(message: MessageRecord) {
-        testTextView.text = message.body
+        testTextView.text = "Control message: ${message.body}"
     }
 
     fun recycle() {

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/messages/VisibleMessageView.kt

@@ -0,0 +1,40 @@
+package org.thoughtcrime.securesms.conversation.v2.messages
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.widget.LinearLayout
+import kotlinx.android.synthetic.main.view_visible_message.view.*
+import network.loki.messenger.R
+import org.thoughtcrime.securesms.database.model.MessageRecord
+
+class VisibleMessageView : LinearLayout {
+
+    // region Lifecycle
+    constructor(context: Context) : super(context) {
+        setUpViewHierarchy()
+    }
+
+    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
+        setUpViewHierarchy()
+    }
+
+    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
+        setUpViewHierarchy()
+    }
+
+    private fun setUpViewHierarchy() {
+        LayoutInflater.from(context).inflate(R.layout.view_visible_message, this)
+    }
+    // endregion
+
+    // region Updating
+    fun bind(message: MessageRecord) {
+        testTextView.text = "Visible message: ${message.body}"
+    }
+
+    fun recycle() {
+        // TODO: Implement
+    }
+    // endregion
+}

app/src/main/res/layout/view_visible_message.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="horizontal">
+
+    <TextView
+        android:id="@+id/testTextView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="@dimen/medium_font_size"
+        android:textColor="@color/text" />
+
+</LinearLayout>