Clean header management

app/src/main/java/net/pokeranalytics/android/calculus/Stat.kt

@@ -73,8 +73,6 @@ enum class Stat : RowRepresentable {
         }
 
     override val viewType: Int = RowViewType.TITLE_VALUE.ordinal
-    override var displayHeader: Boolean = false
-    override var headerValues: ArrayList<String> = ArrayList()
 }
 
 /**

app/src/main/java/net/pokeranalytics/android/model/Limit.kt

@@ -37,8 +37,6 @@ enum class Limit : RowRepresentable {
 		return this.longName
 	}
 
-	override var displayHeader: Boolean = false
-	override var headerValues: ArrayList<String> = ArrayList()
 }
 
 /*

app/src/main/java/net/pokeranalytics/android/model/TableSize.kt

@@ -34,6 +34,4 @@ class TableSize(var numberOfPlayer: Int) : RowRepresentable {
 	override val viewType: Int
 		get() = RowViewType.TITLE_GRID.ordinal
 
-	override var displayHeader: Boolean = false
-	override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/model/realm/Bankroll.kt

@@ -96,8 +96,4 @@ open class Bankroll(name: String = "") : RealmObject(), Savable,
 		return this.name.isNotEmpty()
 	}
 
-	@Ignore
-	override var displayHeader: Boolean = false
-	@Ignore
-	override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/model/realm/Game.kt

@@ -77,8 +77,4 @@ open class Game : RealmObject(), Savable, RowRepresentableDataSource,
         return this.name.isNotEmpty()
     }
 
-    @Ignore
-    override var displayHeader: Boolean = false
-    @Ignore
-    override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/model/realm/Location.kt

@@ -1,7 +1,6 @@
 package net.pokeranalytics.android.model.realm
 
 import io.realm.RealmObject
-import io.realm.annotations.Ignore
 import io.realm.annotations.PrimaryKey
 import net.pokeranalytics.android.model.interfaces.Savable
 import net.pokeranalytics.android.ui.adapter.RowRepresentableDataSource
@@ -14,65 +13,61 @@ import java.util.*
 
 open class Location : RealmObject(), Savable, RowRepresentableDataSource, RowRepresentable {
 
-    @PrimaryKey
-    var id = UUID.randomUUID().toString()
+	@PrimaryKey
+	var id = UUID.randomUUID().toString()
 
-    // The name of the location
-    var name: String = ""
+	// The name of the location
+	var name: String = ""
 
-    // the longitude of the location
-    var longitude: Double? = null
+	// the longitude of the location
+	var longitude: Double? = null
 
-    // the latitude of the location
-    var latitude: Double? = null
+	// the latitude of the location
+	var latitude: Double? = null
 
-    override fun getDisplayName(): String {
-        return this.name
-    }
+	override fun getDisplayName(): String {
+		return this.name
+	}
 
-    override fun uniqueIdentifier(): String {
-        return this.id
-    }
+	override fun uniqueIdentifier(): String {
+		return this.id
+	}
 
-    override fun adapterRows(): ArrayList<RowRepresentable> {
-        val rows = ArrayList<RowRepresentable>()
-        rows.add(SimpleRow.NAME)
-        rows.addAll(LocationRow.values())
-        return rows
-    }
+	override fun adapterRows(): ArrayList<RowRepresentable> {
+		val rows = ArrayList<RowRepresentable>()
+		rows.add(SimpleRow.NAME)
+		rows.addAll(LocationRow.values())
+		return rows
+	}
 
-    override fun stringForRow(row: RowRepresentable): String {
-        return when (row) {
-            SimpleRow.NAME -> this.name
-            else -> return super.stringForRow(row)
-        }
-    }
+	override fun stringForRow(row: RowRepresentable): String {
+		return when (row) {
+			SimpleRow.NAME -> this.name
+			else -> return super.stringForRow(row)
+		}
+	}
 
-    override fun editDescriptors(row: RowRepresentable): ArrayList<RowRepresentableEditDescriptor> {
-        val data = java.util.ArrayList<RowRepresentableEditDescriptor>()
-        when (row) {
-            SimpleRow.NAME -> data.add(
-                RowRepresentableEditDescriptor(
-                    this.name,
-                    SimpleRow.NAME.resId
-                )
-            )
-        }
-        return data
-    }
+	override fun editDescriptors(row: RowRepresentable): ArrayList<RowRepresentableEditDescriptor> {
+		val data = java.util.ArrayList<RowRepresentableEditDescriptor>()
+		when (row) {
+			SimpleRow.NAME -> data.add(
+				RowRepresentableEditDescriptor(
+					this.name,
+					SimpleRow.NAME.resId
+				)
+			)
+		}
+		return data
+	}
 
-    override fun updateValue(value: Any?, row: RowRepresentable) {
-        when (row) {
-            SimpleRow.NAME -> this.name = value as String? ?: ""
-        }
-    }
+	override fun updateValue(value: Any?, row: RowRepresentable) {
+		when (row) {
+			SimpleRow.NAME -> this.name = value as String? ?: ""
+		}
+	}
 
-    override fun isValidForSave(): Boolean {
-        return this.name.isNotEmpty()
-    }
+	override fun isValidForSave(): Boolean {
+		return this.name.isNotEmpty()
+	}
 
-    @Ignore
-    override var displayHeader: Boolean = false
-    @Ignore
-    override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt

@@ -27,6 +27,7 @@ import kotlin.collections.ArrayList
 open class Session : RealmObject(), SessionInterface, Savable,
 	RowRepresentableDataSource, RowRepresentable {
 
+
 	enum class Type {
 		CASH_GAME,
 		TOURNAMENT
@@ -122,12 +123,6 @@ open class Session : RealmObject(), SessionInterface, Savable,
 	// The features of the tournament, like Knockout, Shootout, Turbo...
 	var tournamentFeatures: RealmList<TournamentFeature> = RealmList()
 
-	@Ignore
-	override var displayHeader: Boolean = false
-
-	@Ignore
-	override var headerValues: ArrayList<String> = ArrayList()
-
 	/**
 	 * Start a session
 	 */

app/src/main/java/net/pokeranalytics/android/model/realm/TournamentFeature.kt

@@ -67,8 +67,4 @@ open class TournamentFeature : RealmObject(), Savable, RowRepresentableDataSourc
 		return this.name.isNotEmpty()
 	}
 
-	@Ignore
-	override var displayHeader: Boolean = false
-	@Ignore
-	override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/model/realm/TournamentType.kt

@@ -1,7 +1,6 @@
 package net.pokeranalytics.android.model.realm
 
 import io.realm.RealmObject
-import io.realm.annotations.Ignore
 import io.realm.annotations.PrimaryKey
 import net.pokeranalytics.android.model.interfaces.Savable
 import net.pokeranalytics.android.ui.adapter.RowRepresentableDataSource
@@ -32,9 +31,4 @@ open class TournamentType : RealmObject(), Savable, RowRepresentableDataSource,
 		}
 	}
 
-	@Ignore
-	override var displayHeader: Boolean = false
-	@Ignore
-	override var headerValues: ArrayList<String> = ArrayList()
-
 }

app/src/main/java/net/pokeranalytics/android/model/realm/TransactionType.kt

@@ -2,7 +2,6 @@ package net.pokeranalytics.android.model.realm
 
 import android.text.InputType
 import io.realm.RealmObject
-import io.realm.annotations.Ignore
 import io.realm.annotations.PrimaryKey
 import net.pokeranalytics.android.model.interfaces.Savable
 import net.pokeranalytics.android.ui.adapter.RowRepresentableDataSource
@@ -76,10 +75,6 @@ open class TransactionType : RealmObject(), Savable, RowRepresentableDataSource,
 		return this.name.isNotEmpty()
 	}
 
-	@Ignore
-	override var displayHeader: Boolean = false
-	@Ignore
-	override var headerValues: ArrayList<String> = ArrayList()
 }
 
 enum class TransactionKind {

app/src/main/java/net/pokeranalytics/android/ui/fragment/HistoryFragment.kt

@@ -4,11 +4,15 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.realm.RealmResults
 import io.realm.Sort
 import io.realm.kotlin.where
 import kotlinx.android.synthetic.main.fragment_history.*
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
 import net.pokeranalytics.android.R
 import net.pokeranalytics.android.model.interfaces.Savable
 import net.pokeranalytics.android.model.realm.Session
@@ -17,12 +21,15 @@ import net.pokeranalytics.android.ui.adapter.RowRepresentableAdapter
 import net.pokeranalytics.android.ui.adapter.RowRepresentableDataSource
 import net.pokeranalytics.android.ui.adapter.RowRepresentableDelegate
 import net.pokeranalytics.android.ui.fragment.components.PokerAnalyticsFragment
+import net.pokeranalytics.android.ui.view.HistorySessionDiffCallback
 import net.pokeranalytics.android.ui.view.RowRepresentable
 import net.pokeranalytics.android.ui.view.RowViewType
+import net.pokeranalytics.android.ui.view.rowrepresentable.HeaderRowRepresentable
 import net.pokeranalytics.android.util.getMonthAndYear
 import net.pokeranalytics.android.util.isSameDay
 import net.pokeranalytics.android.util.isSameMonth
 import net.pokeranalytics.android.util.longDate
+import timber.log.Timber
 import java.util.*
 
 class HistoryFragment : PokerAnalyticsFragment(), RowRepresentableDataSource, RowRepresentableDelegate {
@@ -39,6 +46,7 @@ class HistoryFragment : PokerAnalyticsFragment(), RowRepresentableDataSource, Ro
 	private lateinit var historyAdapter: RowRepresentableAdapter
 	private lateinit var realmSessions: RealmResults<Session>
 	private val sessions: ArrayList<Session> = ArrayList()
+	private val rows: ArrayList<RowRepresentable> = ArrayList()
 
 	override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
 		return inflater.inflate(R.layout.fragment_history, container, false)
@@ -57,10 +65,9 @@ class HistoryFragment : PokerAnalyticsFragment(), RowRepresentableDataSource, Ro
 
 	override fun onResume() {
 		super.onResume()
-		historyAdapter.notifyDataSetChanged()
 
-		sessions.clear()
-		sessions.addAll(getRealm().copyFromRealm(realmSessions))
+		//rows.clear()
+		//sessions.addAll(getRealm().copyFromRealm(realmSessions))
 		createSessionsHeaders()
 	}
 
@@ -88,8 +95,6 @@ class HistoryFragment : PokerAnalyticsFragment(), RowRepresentableDataSource, Ro
 		val viewManager = LinearLayoutManager(requireContext())
 		historyAdapter = RowRepresentableAdapter(this, this)
 
-		createSessionsHeaders()
-
 		recyclerView.apply {
 			setHasFixedSize(true)
 			layoutManager = viewManager
@@ -102,45 +107,71 @@ class HistoryFragment : PokerAnalyticsFragment(), RowRepresentableDataSource, Ro
 	 */
 	private fun createSessionsHeaders() {
 
-		val groupedByDay = false
+		Timber.d("createSessionsHeaders")
 
-		val calendar = Calendar.getInstance()
-		val currentCalendar = Calendar.getInstance()
+		val oldRows = ArrayList<RowRepresentable>()
+		oldRows.addAll(rows)
 
-		for ((index, session) in sessions.withIndex()) {
-			currentCalendar.time = session.creationDate
-			if (groupedByDay) {
-				if (!calendar.isSameDay(currentCalendar) || index == 0) {
-					calendar.time = currentCalendar.time
-					session.displayHeader = true
-					session.headerValues = arrayListOf(session.creationDate.longDate(), "$ 123")
-				}
-			} else {
-				if (!calendar.isSameMonth(currentCalendar) || index == 0) {
-					calendar.time = currentCalendar.time
-					session.displayHeader = true
-					session.headerValues = arrayListOf(session.creationDate.getMonthAndYear(), "$ 123")
+		rows.clear()
+		sessions.clear()
+		sessions.addAll(getRealm().copyFromRealm(realmSessions))
+
+		GlobalScope.launch {
+
+			delay(100)
+
+			val groupedByDay = false
+			val calendar = Calendar.getInstance()
+			val currentCalendar = Calendar.getInstance()
+
+			for ((index, session) in sessions.withIndex()) {
+				currentCalendar.time = session.creationDate
+				if (groupedByDay) {
+					if (!calendar.isSameDay(currentCalendar) || index == 0) {
+						calendar.time = currentCalendar.time
+						val header = HeaderRowRepresentable(
+							customViewType = RowViewType.HEADER_SESSION,
+							title = session.creationDate.longDate()
+						)
+						rows.add(header)
+					}
+				} else {
+					if (!calendar.isSameMonth(currentCalendar) || index == 0) {
+						calendar.time = currentCalendar.time
+						val header = HeaderRowRepresentable(
+							customViewType = RowViewType.HEADER_SESSION,
+							title = session.creationDate.getMonthAndYear()
+						)
+						rows.add(header)
+					}
 				}
+				rows.add(session)
 			}
-		}
 
+			val diffResult = DiffUtil.calculateDiff(HistorySessionDiffCallback(rows, oldRows))
+			historyAdapter.updateRows(diffResult)
+		}
 	}
 
 
 	override fun rowRepresentableForPosition(position: Int): RowRepresentable {
-		return this.sessions[position]
+		return this.rows[position]
 	}
 
 	override fun numberOfRows(): Int {
-		return this.sessions.size
+		return this.rows.size
 	}
 
 	override fun viewTypeForPosition(position: Int): Int {
-		return RowViewType.ROW_SESSION.ordinal
+		if (rows[position].viewType == RowViewType.HEADER_SESSION.ordinal) {
+			return RowViewType.HEADER_SESSION.ordinal
+		} else {
+			return RowViewType.ROW_SESSION.ordinal
+		}
 	}
 
 	override fun indexForRow(row: RowRepresentable): Int {
-		return this.sessions.indexOf(row)
+		return this.rows.indexOf(row)
 	}
 
 	override fun onRowSelected(position: Int, row: RowRepresentable, fromAction: Boolean) {

app/src/main/java/net/pokeranalytics/android/ui/view/HistorySessionDiffCallback.kt

@@ -0,0 +1,57 @@
+package net.pokeranalytics.android.ui.view
+
+import androidx.annotation.Nullable
+import androidx.recyclerview.widget.DiffUtil
+import net.pokeranalytics.android.model.realm.Session
+import net.pokeranalytics.android.ui.view.rowrepresentable.HeaderRowRepresentable
+
+class HistorySessionDiffCallback(var newRows: List<RowRepresentable>, var oldRows: List<RowRepresentable>) :
+	DiffUtil.Callback() {
+
+	override fun getOldListSize(): Int {
+		return oldRows.size
+	}
+
+	override fun getNewListSize(): Int {
+		return newRows.size
+	}
+
+	override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+
+		if (oldRows[oldItemPosition] is Session && newRows[newItemPosition] is Session) {
+			val session1 = oldRows[oldItemPosition] as Session
+			val session2 = newRows[newItemPosition] as Session
+			return session1.id == session2.id
+		} else if (oldRows[oldItemPosition] is HeaderRowRepresentable && newRows[newItemPosition] is HeaderRowRepresentable) {
+			val header1 = oldRows[oldItemPosition] as HeaderRowRepresentable
+			val header2 = newRows[newItemPosition] as HeaderRowRepresentable
+			return header1.title == header2.title
+		}
+
+		return false
+	}
+
+	override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+		// Force to update all the rows that were already there
+
+		if (oldRows[oldItemPosition] is Session && newRows[newItemPosition] is Session) {
+			val session1 = oldRows[oldItemPosition] as Session
+			val session2 = newRows[newItemPosition] as Session
+
+			return false //session1.id == session2.id
+
+		} else if (oldRows[oldItemPosition] is HeaderRowRepresentable && newRows[newItemPosition] is HeaderRowRepresentable) {
+			val header1 = oldRows[oldItemPosition] as HeaderRowRepresentable
+			val header2 = newRows[newItemPosition] as HeaderRowRepresentable
+			return header1.title == header2.title
+		}
+
+		return false
+	}
+
+	@Nullable
+	override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int): Any? {
+		//you can return particular field for changed item.
+		return super.getChangePayload(oldItemPosition, newItemPosition)
+	}
+}

app/src/main/java/net/pokeranalytics/android/ui/view/RowRepresentable.kt

@@ -44,16 +44,6 @@ interface Displayable : Localizable {
 		get() {
 			return BottomSheetType.NONE
 		}
-
-	val displayHeader: Boolean
-		get() {
-			return false
-		}
-
-	val headerValues: ArrayList<String>
-		get() {
-			return ArrayList<String>()
-		}
 }
 
 /**

app/src/main/java/net/pokeranalytics/android/ui/view/RowViewType.kt

@@ -3,13 +3,13 @@ package net.pokeranalytics.android.ui.view
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.core.view.isVisible
 import androidx.recyclerview.widget.RecyclerView
 import kotlinx.android.synthetic.main.row_bottom_sheet_grid_title.view.*
 import kotlinx.android.synthetic.main.row_bottom_sheet_title.view.*
 import kotlinx.android.synthetic.main.row_header_title_amount.view.*
 import kotlinx.android.synthetic.main.row_header_title_value.view.*
 import kotlinx.android.synthetic.main.row_history_session.view.*
+import kotlinx.android.synthetic.main.row_history_session_header.view.*
 import kotlinx.android.synthetic.main.row_stats_title_value.view.*
 import kotlinx.android.synthetic.main.row_title.view.*
 import kotlinx.android.synthetic.main.row_title_switch.view.*
@@ -27,7 +27,7 @@ interface BindableHolder {
 
 	fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
 
-    }
+	}
 
 }
 
@@ -37,6 +37,7 @@ enum class RowViewType {
 	HEADER_TITLE_VALUE,
 	HEADER_TITLE_AMOUNT,
 	HEADER_TITLE_AMOUNT_BIG,
+	HEADER_SESSION,
 	EDIT_TEXT,
 	TITLE,
 	TITLE_VALUE,
@@ -92,7 +93,8 @@ enum class RowViewType {
 				LayoutInflater.from(parent.context).inflate(
 					R.layout.row_bottom_sheet_grid_title,
 					parent,
-					false)
+					false
+				)
 			)
 			TITLE_SWITCH -> TitleSwitchViewHolder(
 				LayoutInflater.from(parent.context).inflate(
@@ -122,11 +124,21 @@ enum class RowViewType {
 					false
 				)
 			)
+			HEADER_SESSION -> {
+				HeaderSessionViewHolder(
+					LayoutInflater.from(parent.context).inflate(
+						R.layout.row_history_session_header,
+						parent,
+						false
+					)
+				)
+			}
 			ROW_SESSION -> RowSessionViewHolder(
 				LayoutInflater.from(parent.context).inflate(
 					R.layout.row_history_session,
 					parent,
-					false)
+					false
+				)
 			)
 			STAT -> StatsTitleValueViewHolder(
 				LayoutInflater.from(parent.context).inflate(
@@ -176,29 +188,28 @@ enum class RowViewType {
 		}
 	}
 
-
 	inner class TitleViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),
 		BindableHolder {
-        override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
+		override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
 			itemView.rowTitle_title.text = row.localizedTitle(itemView.context)
-            val listener = View.OnClickListener {
-                adapter.delegate?.onRowSelected(position, row)
-            }
-            itemView.rowTitle_container.setOnClickListener(listener)
+			val listener = View.OnClickListener {
+				adapter.delegate?.onRowSelected(position, row)
+			}
+			itemView.rowTitle_container.setOnClickListener(listener)
 		}
 	}
 
 	inner class TitleValueViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),
 		BindableHolder {
-        override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
+		override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
 			itemView.rowTitleValue_title.text = row.localizedTitle(itemView.context)
-            adapter.dataSource?.let {
+			adapter.dataSource?.let {
 				itemView.rowTitleValue_value.text = it.stringForRow(row, itemView.context)
 			}
-            val listener = View.OnClickListener {
-                adapter.delegate?.onRowSelected(position, row)
-            }
-            itemView.rowTitleValue_container.setOnClickListener(listener)
+			val listener = View.OnClickListener {
+				adapter.delegate?.onRowSelected(position, row)
+			}
+			itemView.rowTitleValue_container.setOnClickListener(listener)
 			itemView.rowTitleValue_separator.visibility = if (row.needSeparator) View.VISIBLE else View.GONE
 		}
 	}
@@ -230,45 +241,45 @@ enum class RowViewType {
 
 	inner class TitleSwitchViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),
 		BindableHolder {
-        override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
+		override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
 			itemView.rowTitleSwitch_title.text = row.localizedTitle(itemView.context)
 
-            adapter.dataSource.let {
+			adapter.dataSource.let {
 				itemView.rowTitleSwitch_switch.isChecked = it.boolForRow(row)
-	            itemView.rowTitleSwitch_switch.setOnCheckedChangeListener { buttonView, isChecked ->
-		            adapter.delegate?.onRowValueChanged(isChecked, row)
-	            }
+				itemView.rowTitleSwitch_switch.setOnCheckedChangeListener { buttonView, isChecked ->
+					adapter.delegate?.onRowValueChanged(isChecked, row)
+				}
 			}
 
-            val listener = View.OnClickListener {
-                itemView.rowTitleSwitch_switch.isChecked = !itemView.rowTitleSwitch_switch.isChecked
-            }
-            itemView.rowTitleSwitch_container.setOnClickListener(listener)
-            itemView.rowTitleSwitch_separator.visibility = if (row.needSeparator) View.VISIBLE else View.GONE
+			val listener = View.OnClickListener {
+				itemView.rowTitleSwitch_switch.isChecked = !itemView.rowTitleSwitch_switch.isChecked
+			}
+			itemView.rowTitleSwitch_container.setOnClickListener(listener)
+			itemView.rowTitleSwitch_separator.visibility = if (row.needSeparator) View.VISIBLE else View.GONE
 
 		}
 	}
 
 	inner class TitleValueActionViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),
 		BindableHolder {
-        override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
+		override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
 			itemView.rowTitleValueAction_title.text = row.localizedTitle(itemView.context)
 			adapter.dataSource.let { rowDelegate ->
 
 				val value = rowDelegate.stringForRow(row, itemView.context)
 				itemView.rowTitleValueAction_value.text = value
 				itemView.rowTitleValueAction_action.visibility = if (value == "--") View.GONE else View.VISIBLE
-				rowDelegate.actionIconForRow(row)?.let {icon ->
+				rowDelegate.actionIconForRow(row)?.let { icon ->
 					itemView.rowTitleValueAction_action.setImageResource(icon)
 				}
 			}
-            val listener = View.OnClickListener {
-                adapter.delegate?.onRowSelected(position, row)
-            }
-            val actionListener = View.OnClickListener {
-                adapter.delegate?.onRowSelected(position, row, true)
-            }
-            itemView.rowTitleValueAction_container.setOnClickListener(listener)
+			val listener = View.OnClickListener {
+				adapter.delegate?.onRowSelected(position, row)
+			}
+			val actionListener = View.OnClickListener {
+				adapter.delegate?.onRowSelected(position, row, true)
+			}
+			itemView.rowTitleValueAction_container.setOnClickListener(listener)
 			itemView.rowTitleValueAction_action.setOnClickListener(actionListener)
 		}
 	}
@@ -293,17 +304,28 @@ enum class RowViewType {
 		}
 	}
 
+
+	inner class HeaderSessionViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),
+		BindableHolder {
+		override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
+			itemView.sessionHeaderTitle.text = row.localizedTitle(itemView.context)
+		}
+	}
+
 	inner class RowSessionViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView),
 		BindableHolder {
 
 		override fun bind(position: Int, row: RowRepresentable, adapter: RowRepresentableAdapter) {
 
+			//TODO: Header
+			/*
 			if (row.displayHeader) {
 				itemView.sessionHeader.isVisible = true
 				itemView.sessionHeader.text = row.headerValues.firstOrNull() ?: ""
 			} else {
 				itemView.sessionHeader.isVisible = false
 			}
+			*/
 
 			itemView.sessionRow.setData(row as Session)
 			val listener = View.OnClickListener {

app/src/main/java/net/pokeranalytics/android/ui/view/rowrepresentable/BankrollRow.kt

@@ -30,7 +30,4 @@ enum class BankrollRow : RowRepresentable {
             }
         }
 
-    override var displayHeader: Boolean = false
-    override var headerValues: ArrayList<String> = ArrayList()
-
 }

app/src/main/java/net/pokeranalytics/android/ui/view/rowrepresentable/GameRow.kt

@@ -29,6 +29,4 @@ enum class GameRow : RowRepresentable {
             }
         }
 
-    override var displayHeader: Boolean = false
-    override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/ui/view/rowrepresentable/HeaderRowRepresentable.kt

@@ -8,7 +8,7 @@ import net.pokeranalytics.android.ui.view.RowViewType
  * A class to display headers as row representable
  */
 class HeaderRowRepresentable(
-    customViewType: RowViewType? = RowViewType.HEADER,
+    var customViewType: RowViewType? = RowViewType.HEADER,
     override var resId: Int? = null,
     var title: String? = null,
     var value: String? = null
@@ -27,7 +27,5 @@ class HeaderRowRepresentable(
 
 
     override val viewType: Int = customViewType?.ordinal ?: RowViewType.HEADER.ordinal
-    override var displayHeader: Boolean = false
-    override var headerValues: ArrayList<String> = ArrayList()
 
 }

app/src/main/java/net/pokeranalytics/android/ui/view/rowrepresentable/LocationRow.kt

@@ -30,6 +30,4 @@ enum class LocationRow : RowRepresentable {
             }
         }
 
-    override var displayHeader: Boolean = false
-    override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/ui/view/rowrepresentable/SessionRow.kt

@@ -127,6 +127,4 @@ enum class SessionRow : RowRepresentable {
             }
         }
 
-    override var displayHeader: Boolean = false
-    override var headerValues: ArrayList<String> = ArrayList()
 }

app/src/main/java/net/pokeranalytics/android/ui/view/rowrepresentable/SimpleRow.kt

@@ -12,6 +12,4 @@ enum class SimpleRow : RowRepresentable {
     override val resId: Int? = R.string.name
     override val viewType: Int = RowViewType.TITLE_VALUE.ordinal
     override val bottomSheetType: BottomSheetType = BottomSheetType.EDIT_TEXT
-    override var displayHeader: Boolean = false
-    override var headerValues: ArrayList<String> = ArrayList()
 }

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

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:tools="http://schemas.android.com/tools"
+	android:layout_width="match_parent"
+	android:layout_height="wrap_content"
+	android:orientation="vertical">
+
+	<androidx.appcompat.widget.AppCompatTextView
+		android:id="@+id/sessionHeaderTitle"
+		style="@style/PokerAnalyticsTheme.TextView.SessionHeader"
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:layout_marginStart="16dp"
+		android:layout_marginTop="16dp"
+		tools:text="Header" />
+
+</LinearLayout>