adding a DateTime thread view type

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt

@@ -6,6 +6,7 @@ import com.simplemobiletools.smsmessenger.adapters.ThreadAdapter
 import com.simplemobiletools.smsmessenger.extensions.getMessages
 import com.simplemobiletools.smsmessenger.helpers.THREAD_ID
 import com.simplemobiletools.smsmessenger.helpers.THREAD_NAME
+import com.simplemobiletools.smsmessenger.models.ThreadItem
 import kotlinx.android.synthetic.main.activity_thread.*
 
 class ThreadActivity : SimpleActivity() {
@@ -18,8 +19,9 @@ class ThreadActivity : SimpleActivity() {
         val threadID = intent.getIntExtra(THREAD_ID, 0)
         val messages = getMessages(threadID)
         messages.sortBy { it.id }
+        val items = messages.toMutableList() as ArrayList<ThreadItem>
 
-        ThreadAdapter(this, messages, thread_messages_list, thread_messages_fastscroller) {
+        ThreadAdapter(this, items, thread_messages_list, thread_messages_fastscroller) {
 
         }.apply {
             thread_messages_list.adapter = this

app/src/main/kotlin/com/simplemobiletools/smsmessenger/adapters/ThreadAdapter.kt

@@ -11,13 +11,16 @@ import com.simplemobiletools.commons.views.FastScroller
 import com.simplemobiletools.commons.views.MyRecyclerView
 import com.simplemobiletools.smsmessenger.R
 import com.simplemobiletools.smsmessenger.activities.SimpleActivity
-import com.simplemobiletools.smsmessenger.helpers.RECEIVED_MESSAGE
+import com.simplemobiletools.smsmessenger.helpers.THREAD_DATE_TIME
-import com.simplemobiletools.smsmessenger.helpers.SENT_MESSAGE
+import com.simplemobiletools.smsmessenger.helpers.THREAD_RECEIVED_MESSAGE
+import com.simplemobiletools.smsmessenger.helpers.THREAD_SENT_MESSAGE
 import com.simplemobiletools.smsmessenger.models.Message
+import com.simplemobiletools.smsmessenger.models.ThreadDateTime
+import com.simplemobiletools.smsmessenger.models.ThreadItem
 import kotlinx.android.synthetic.main.item_received_message.view.*
 
 class ThreadAdapter(
-    activity: SimpleActivity, var messages: ArrayList<Message>,
+    activity: SimpleActivity, var messages: ArrayList<ThreadItem>,
     recyclerView: MyRecyclerView,
     fastScroller: FastScroller,
     itemClick: (Any) -> Unit
@@ -43,29 +46,33 @@ class ThreadAdapter(
 
     override fun getSelectableItemCount() = messages.size
 
-    override fun getIsItemSelectable(position: Int) = true
+    override fun getIsItemSelectable(position: Int) = !isThreadDateTime(position)
 
-    override fun getItemSelectionKey(position: Int) = messages.getOrNull(position)?.id
+    override fun getItemSelectionKey(position: Int) = (messages.getOrNull(position) as? Message)?.id
 
-    override fun getItemKeyPosition(key: Int) = messages.indexOfFirst { it.id == key }
+    override fun getItemKeyPosition(key: Int) = messages.indexOfFirst { (it as? Message)?.id == key }
 
     override fun onActionModeCreated() {}
 
     override fun onActionModeDestroyed() {}
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val layout = if (viewType == RECEIVED_MESSAGE) {
+        val layout = when (viewType) {
-            R.layout.item_received_message
+            THREAD_DATE_TIME -> R.layout.item_thread_date_time
-        } else {
+            THREAD_RECEIVED_MESSAGE -> R.layout.item_received_message
-            R.layout.item_sent_message
+            else -> R.layout.item_sent_message
         }
         return createViewHolder(layout, parent)
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val message = messages[position]
+        val item = messages[position]
-        holder.bindView(message, true, true) { itemView, layoutPosition ->
+        holder.bindView(item, true, true) { itemView, layoutPosition ->
-            setupView(itemView, message)
+            if (item is ThreadDateTime) {
+                setupDateTime(itemView, item)
+            } else {
+                setupView(itemView, item as Message)
+            }
         }
         bindViewHolder(holder)
     }
@@ -73,16 +80,15 @@ class ThreadAdapter(
     override fun getItemCount() = messages.size
 
     override fun getItemViewType(position: Int): Int {
-        return if (messages[position].isReceivedMessage()) {
+        val item = messages[position]
-            RECEIVED_MESSAGE
+        return when {
-        } else {
+            item is ThreadDateTime -> THREAD_DATE_TIME
-            SENT_MESSAGE
+            (messages[position] as? Message)?.isReceivedMessage() == true -> THREAD_RECEIVED_MESSAGE
+            else -> THREAD_SENT_MESSAGE
         }
     }
 
-    private fun getItemWithKey(key: Int): Message? = messages.firstOrNull { it.id == key }
+    private fun isThreadDateTime(position: Int) = messages.getOrNull(position) is ThreadDateTime
-
-    private fun getSelectedItems() = messages.filter { selectedKeys.contains(it.id) } as ArrayList<Message>
 
     private fun setupView(view: View, message: Message) {
         view.apply {
@@ -96,4 +102,8 @@ class ThreadAdapter(
             }
         }
     }
+
+    private fun setupDateTime(view: View, dateTime: ThreadDateTime) {
+
+    }
 }

app/src/main/kotlin/com/simplemobiletools/smsmessenger/helpers/Constants.kt

@@ -3,6 +3,7 @@ package com.simplemobiletools.smsmessenger.helpers
 const val THREAD_ID = "thread_id"
 const val THREAD_NAME = "thread_name"
 
-// message types for the thread list view
+// view types for the thread list view
-const val RECEIVED_MESSAGE = 1
+const val THREAD_DATE_TIME = 1
-const val SENT_MESSAGE = 2
+const val THREAD_RECEIVED_MESSAGE = 2
+const val THREAD_SENT_MESSAGE = 3

app/src/main/kotlin/com/simplemobiletools/smsmessenger/models/Message.kt

@@ -5,6 +5,6 @@ import android.provider.Telephony
 data class Message(
     val id: Int, val subject: String, val body: String, val type: Int, val address: String, val date: Int, val read: Boolean,
     val thread: Int
-) {
+) : ThreadItem() {
     fun isReceivedMessage() = type == Telephony.Sms.MESSAGE_TYPE_INBOX
 }

app/src/main/kotlin/com/simplemobiletools/smsmessenger/models/ThreadDateTime.kt

@@ -0,0 +1,3 @@
+package com.simplemobiletools.smsmessenger.models
+
+open class ThreadDateTime(val date: Int)

app/src/main/kotlin/com/simplemobiletools/smsmessenger/models/ThreadItem.kt

@@ -0,0 +1,3 @@
+package com.simplemobiletools.smsmessenger.models
+
+open class ThreadItem

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

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/thread_date_time"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:textSize="@dimen/normal_text_size"
+    tools:text="13 March, 13:30" />