show the appropriate messages at opening a thread

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

@@ -2,8 +2,10 @@ package com.simplemobiletools.smsmessenger.activities
 
 import android.os.Bundle
 import com.simplemobiletools.smsmessenger.R
+import com.simplemobiletools.smsmessenger.adapters.ThreadAdapter
 import com.simplemobiletools.smsmessenger.extensions.getMessages
 import com.simplemobiletools.smsmessenger.helpers.THREAD_ID
+import kotlinx.android.synthetic.main.activity_thread.*
 
 class ThreadActivity : SimpleActivity() {
 
@@ -12,5 +14,12 @@ class ThreadActivity : SimpleActivity() {
         setContentView(R.layout.activity_thread)
         val threadID = intent.getIntExtra(THREAD_ID, 0)
         val messages = getMessages(threadID)
+        messages.sortBy { it.id }
+
+        ThreadAdapter(this, messages, thread_messages_list, thread_messages_fastscroller) {
+
+        }.apply {
+            thread_messages_list.adapter = this
+        }
     }
 }

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

@@ -0,0 +1,73 @@
+package com.simplemobiletools.smsmessenger.adapters
+
+import android.view.Menu
+import android.view.View
+import android.view.ViewGroup
+import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
+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.models.Message
+import kotlinx.android.synthetic.main.item_thread_message.view.*
+
+class ThreadAdapter(
+    activity: SimpleActivity, var messages: ArrayList<Message>,
+    recyclerView: MyRecyclerView,
+    fastScroller: FastScroller,
+    itemClick: (Any) -> Unit
+) : MyRecyclerViewAdapter(activity, recyclerView, fastScroller, itemClick) {
+
+    init {
+        setupDragListener(true)
+    }
+
+    override fun getActionMenuId() = R.menu.cab_messages
+
+    override fun prepareActionMode(menu: Menu) {}
+
+    override fun actionItemPressed(id: Int) {
+        if (selectedKeys.isEmpty()) {
+            return
+        }
+
+        when (id) {
+            R.id.cab_select_all -> selectAll()
+        }
+    }
+
+    override fun getSelectableItemCount() = messages.size
+
+    override fun getIsItemSelectable(position: Int) = true
+
+    override fun getItemSelectionKey(position: Int) = messages.getOrNull(position)?.id
+
+    override fun getItemKeyPosition(key: Int) = messages.indexOfFirst { it.id == key }
+
+    override fun onActionModeCreated() {}
+
+    override fun onActionModeDestroyed() {}
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_thread_message, parent)
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val message = messages[position]
+        holder.bindView(message, true, true) { itemView, layoutPosition ->
+            setupView(itemView, message)
+        }
+        bindViewHolder(holder)
+    }
+
+    override fun getItemCount() = messages.size
+
+    private fun getItemWithKey(key: Int): Message? = messages.firstOrNull { it.id == key }
+
+    private fun getSelectedItems() = messages.filter { selectedKeys.contains(it.id) } as ArrayList<Message>
+
+    private fun setupView(view: View, message: Message) {
+        view.apply {
+            thread_message_body.text = message.body
+            thread_message_body.setTextColor(textColor)
+        }
+    }
+}

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

@@ -10,6 +10,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:clipToPadding="false"
+        android:overScrollMode="ifContentScrolls"
         android:scrollbars="none"
         app:layoutManager="com.simplemobiletools.commons.views.MyLinearLayoutManager" />
 

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

@@ -1,7 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/thread_holder"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
 
+    <com.simplemobiletools.commons.views.MyRecyclerView
+        android:id="@+id/thread_messages_list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:clipToPadding="false"
+        android:overScrollMode="ifContentScrolls"
+        android:scrollbars="none"
+        app:layoutManager="com.simplemobiletools.commons.views.MyLinearLayoutManager"
+        app:stackFromEnd="true" />
+
+    <com.simplemobiletools.commons.views.FastScroller
+        android:id="@+id/thread_messages_fastscroller"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_alignTop="@+id/thread_messages_list"
+        android:layout_alignBottom="@+id/thread_messages_list"
+        android:layout_alignParentEnd="true"
+        android:paddingStart="@dimen/normal_margin">
+
+        <include layout="@layout/fastscroller_handle_vertical" />
+
+    </com.simplemobiletools.commons.views.FastScroller>
 </RelativeLayout>

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

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/thread_message_holder"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="@dimen/activity_margin">
+
+    <TextView
+        android:id="@+id/thread_message_body"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="@dimen/normal_text_size"
+        tools:text="Hey buddy!" />
+
+</RelativeLayout>