Stats and graphs: Added intelligence to provide labels for legends

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

@@ -1,7 +1,5 @@
 package net.pokeranalytics.android.calculus
 
-import android.os.Parcel
-import android.os.Parcelable
 import io.realm.Realm
 import net.pokeranalytics.android.calculus.Stat.*
 import net.pokeranalytics.android.model.realm.ComputableResult
@@ -10,31 +8,6 @@ import net.pokeranalytics.android.model.realm.SessionSet
 import timber.log.Timber
 import java.util.*
 
-class ParcelableString(var string: String) : Parcelable {
-	constructor(parcel: Parcel) : this(parcel.readString()) {
-	}
-
-	override fun writeToParcel(parcel: Parcel, flags: Int) {
-		parcel.writeString(string)
-	}
-
-	override fun describeContents(): Int {
-		return 0
-	}
-
-	companion object CREATOR : Parcelable.Creator<ParcelableString> {
-		override fun createFromParcel(parcel: Parcel): ParcelableString {
-			return ParcelableString(parcel)
-		}
-
-		override fun newArray(size: Int): Array<ParcelableString?> {
-			return arrayOfNulls(size)
-		}
-	}
-
-}
-
-
 /**
  * The class performing stats computation
  */
@@ -92,8 +65,6 @@ class Calculator {
 			var computableGroups: MutableList<ComputableGroup> = mutableListOf()
 			filters.forEach { filter ->
 
-				val results = filter.results<ComputableResult>()
-				val sets = filter.results<SessionSet>()
 				val group = ComputableGroup(filter.name, filter.filterConditions.map { it.queryCondition })
 				computableGroups.add(group)
 
@@ -175,20 +146,20 @@ class Calculator {
 						tBuyinSum += computable.ratedBuyin
 						tHands += computable.estimatedHands
 
-						val sessionId = ParcelableString(computable.session?.id ?: throw IllegalStateException("Computing lone ComputableResult"))
+						val session = computable.session ?: throw IllegalStateException("Computing lone ComputableResult")
-						results.addEvolutionValue(tSum, NETRESULT, sessionId)
+						results.addEvolutionValue(tSum, NETRESULT, session)
-						results.addEvolutionValue(tSum / index, AVERAGE, sessionId)
+						results.addEvolutionValue(tSum / index, AVERAGE, session)
-						results.addEvolutionValue(index.toDouble(), NUMBER_OF_GAMES, sessionId)
+						results.addEvolutionValue(index.toDouble(), NUMBER_OF_GAMES, session)
-						results.addEvolutionValue(tBBSum / tBBSessionCount, AVERAGE_NET_BB, sessionId)
+						results.addEvolutionValue(tBBSum / tBBSessionCount, AVERAGE_NET_BB, session)
-						results.addEvolutionValue((tWinningSessionCount / index).toDouble(), WIN_RATIO, sessionId)
+						results.addEvolutionValue((tWinningSessionCount / index).toDouble(), WIN_RATIO, session)
-						results.addEvolutionValue(tBuyinSum / index, AVERAGE_BUYIN, sessionId)
+						results.addEvolutionValue(tBuyinSum / index, AVERAGE_BUYIN, session)
 
 						Stat.netBBPer100Hands(tBBSum, tHands)?.let { netBB100 ->
-							results.addEvolutionValue(netBB100, NET_BB_PER_100_HANDS, sessionId)
+							results.addEvolutionValue(netBB100, NET_BB_PER_100_HANDS, session)
 						}
 
 						Stat.returnOnInvestment(tSum, tBuyinSum)?.let { roi ->
-							results.addEvolutionValue(roi, ROI, sessionId)
+							results.addEvolutionValue(roi, ROI, session)
 						}
 
 					}
@@ -208,7 +179,7 @@ class Calculator {
 			val gBBSum = sessionSets.sum(SessionSet.Field.BB_NET.identifier).toDouble()
 
 			val hourlyRate = gSum / gHourlyDuration
-//			var hourlyRateBB = gBBSum / gDuration
+//			var bbHourlyRate = gBBSum / gDuration
 
 			when (options.evolutionValues) {
 				Options.EvolutionValues.DATED -> {
@@ -231,17 +202,16 @@ class Calculator {
 						tHourlyRate = gSum / tHourlyDuration
 						tHourlyRateBB = gBBSum / tHourlyDuration
 
-						val id = ParcelableString(sessionSet.id)
+						results.addEvolutionValue(tSum, tHourlyDuration, NETRESULT, sessionSet)
-						results.addEvolutionValue(tSum, tHourlyDuration, NETRESULT, id)
+						results.addEvolutionValue(tSum / tHourlyDuration, tHourlyDuration, HOURLY_RATE, sessionSet)
-						results.addEvolutionValue(tSum / tHourlyDuration, tHourlyDuration, HOURLY_RATE, id)
+						results.addEvolutionValue(tHourlyRate, tHourlyDuration, HOURLY_RATE, sessionSet)
-						results.addEvolutionValue(tHourlyRate, tHourlyDuration, HOURLY_RATE, id)
+						results.addEvolutionValue(tIndex.toDouble(), tHourlyDuration, NUMBER_OF_SETS, sessionSet)
-						results.addEvolutionValue(tIndex.toDouble(), tHourlyDuration, NUMBER_OF_SETS, id)
+						results.addEvolutionValue(sessionSet.netDuration.toDouble(), tHourlyDuration, DURATION, sessionSet)
-						results.addEvolutionValue(sessionSet.netDuration.toDouble(), tHourlyDuration, DURATION, id)
+						results.addEvolutionValue(tHourlyDuration / tIndex, tHourlyDuration, AVERAGE_DURATION, sessionSet)
-						results.addEvolutionValue(tHourlyDuration / tIndex, tHourlyDuration, AVERAGE_DURATION, id)
+						results.addEvolutionValue(tHourlyRateBB, tHourlyDuration, HOURLY_RATE_BB, sessionSet)
-						results.addEvolutionValue(tHourlyRateBB, tHourlyDuration, HOURLY_RATE_BB, id)
 
 						Stat.netBBPer100Hands(gBBSum, gTotalHands)?.let { netBB100 ->
-							results.addEvolutionValue(netBB100, tHourlyDuration, NET_BB_PER_100_HANDS, id)
+							results.addEvolutionValue(netBB100, tHourlyDuration, NET_BB_PER_100_HANDS, sessionSet)
 						}
 
 					}

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

@@ -5,6 +5,7 @@ import com.github.mikephil.charting.data.Entry
 import io.realm.Realm
 import io.realm.RealmResults
 import net.pokeranalytics.android.model.filter.QueryCondition
+import net.pokeranalytics.android.model.interfaces.Timed
 import net.pokeranalytics.android.model.realm.ComputableResult
 import net.pokeranalytics.android.model.realm.Filter
 import net.pokeranalytics.android.model.realm.SessionSet
@@ -113,8 +114,9 @@ class ComputedResults(group: ComputableGroup) {
 		this._addEvolutionValue(Point(value, data), stat = stat)
 	}
 
-	fun addEvolutionValue(value: Double, duration: Double, stat: Stat, data: Any) {
+	fun addEvolutionValue(value: Double, duration: Double, stat: Stat, data: Timed) {
-		this._addEvolutionValue(Point(value, y = duration, data = data), stat = stat)
+		stat.underlyingClass = data::class.java
+		this._addEvolutionValue(Point(value, y = duration, data = data.id), stat = stat)
 	}
 
 	private fun _addEvolutionValue(point: Point, stat: Stat) {
@@ -169,7 +171,7 @@ class ComputedResults(group: ComputableGroup) {
 
 	// MPAndroidChart
 
-	fun defaultStatEntries(stat: Stat): List<out Entry> {
+	fun defaultStatEntries(stat: Stat): List<Entry> {
 		return when (stat) {
 			Stat.NUMBER_OF_SETS, Stat.NUMBER_OF_GAMES -> this.barEntries(stat)
 			else -> this.singleLineEntries(stat)
@@ -177,7 +179,7 @@ class ComputedResults(group: ComputableGroup) {
 	}
 
 	fun singleLineEntries(stat: Stat): List<Entry> {
-		var entries = mutableListOf<Entry>()
+		val entries = mutableListOf<Entry>()
 		this._evolutionValues[stat]?.let { points ->
 			points.forEachIndexed { index, p ->
 				entries.add(Entry(index.toFloat(), p.y.toFloat(), p.data))
@@ -187,7 +189,7 @@ class ComputedResults(group: ComputableGroup) {
 	}
 
 	fun durationEntries(stat: Stat): List<Entry> {
-		var entries = mutableListOf<Entry>()
+		val entries = mutableListOf<Entry>()
 		this._evolutionValues[stat]?.let { points ->
 			points.forEach { p ->
 				entries.add(Entry(p.x.toFloat(), p.y.toFloat(), p.data))
@@ -198,8 +200,7 @@ class ComputedResults(group: ComputableGroup) {
 
 	fun barEntries(stat: Stat): List<BarEntry> {
 
-		var entries = mutableListOf<BarEntry>()
+		val entries = mutableListOf<BarEntry>()
-
 		this._evolutionValues[stat]?.let { points ->
 			points.forEach { p ->
 				entries.add(BarEntry(p.x.toFloat(), p.y.toFloat(), p.data))

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

@@ -1,8 +1,10 @@
 package net.pokeranalytics.android.calculus
 
 import android.content.Context
+import io.realm.RealmModel
 import net.pokeranalytics.android.R
 import net.pokeranalytics.android.exceptions.FormattingException
+import net.pokeranalytics.android.model.interfaces.Timed
 import net.pokeranalytics.android.ui.view.RowRepresentable
 import net.pokeranalytics.android.ui.view.RowViewType
 import net.pokeranalytics.android.util.CurrencyUtils
@@ -11,10 +13,20 @@ import net.pokeranalytics.android.util.extensions.formatted
 import net.pokeranalytics.android.util.extensions.formattedHourlyDuration
 import java.util.*
 
+class StatFormattingException(message: String) : Exception(message) {
+
+}
+
+interface StatBase : RealmModel {
+
+	fun formattedValue(stat: Stat, context: Context): TextFormat
+
+}
+
 /**
  * An enum representing all the types of Session statistics
  */
-enum class Stat : RowRepresentable {
+enum class Stat(var underlyingClass: Class<out Timed>? = null) : RowRepresentable {
 
 	NETRESULT,
 	HOURLY_RATE,
@@ -37,7 +49,7 @@ enum class Stat : RowRepresentable {
 	/**
 	 * Returns whether the stat evolution numericValues requires a distribution sorting
 	 */
-    fun hasDistributionSorting() : Boolean {
+	fun hasDistributionSorting(): Boolean {
 		return when (this) {
 			STANDARD_DEVIATION, STANDARD_DEVIATION_HOURLY, STANDARD_DEVIATION_BB_PER_100_HANDS -> true
 			else -> false
@@ -46,14 +58,14 @@ enum class Stat : RowRepresentable {
 
 	companion object {
 
-        fun returnOnInvestment(netResult: Double, buyin: Double) : Double? {
+		fun returnOnInvestment(netResult: Double, buyin: Double): Double? {
 			if (buyin == 0.0) {
 				return null
 			}
 			return netResult / buyin
 		}
 
-        fun netBBPer100Hands(netBB: Double, numberOfHands: Double) : Double? {
+		fun netBBPer100Hands(netBB: Double, numberOfHands: Double): Double? {
 			if (numberOfHands == 0.0) {
 				return null
 			}
@@ -85,6 +97,48 @@ enum class Stat : RowRepresentable {
 			}
 		}
 
+
+	/**
+	 * Formats the value of the stat to be suitable for display
+	 */
+	fun format(value: Double, currency: Currency? = null, context: Context): TextFormat {
+
+		if (value.isNaN()) {
+			return TextFormat(NULL_TEXT, R.color.white)
+		}
+
+		when (this) {
+			// Amounts + red/green
+			Stat.NETRESULT, Stat.HOURLY_RATE, Stat.AVERAGE -> {
+				val numberFormat = CurrencyUtils.getCurrencyFormatter(context, currency)
+				val color = if (value >= this.threshold) R.color.green else R.color.red
+				return TextFormat(numberFormat.format(value), color)
+			}
+			// Red/green numericValues
+			Stat.HOURLY_RATE_BB, Stat.AVERAGE_NET_BB, Stat.NET_BB_PER_100_HANDS -> {
+				val color = if (value >= this.threshold) R.color.green else R.color.red
+				return TextFormat(value.formatted(), color)
+			}
+			// white integers
+			Stat.NUMBER_OF_SETS, Stat.NUMBER_OF_GAMES, Stat.HANDS_PLAYED -> {
+				return TextFormat("${value.toInt()}")
+			} // white durations
+			Stat.DURATION, Stat.AVERAGE_DURATION -> {
+				return TextFormat(value.formattedHourlyDuration())
+			} // red/green percentages
+			Stat.WIN_RATIO, Stat.ROI -> {
+				val color = if (value * 100 >= this.threshold) R.color.green else R.color.red
+				return TextFormat("${(value * 100).formatted()}%", color)
+			} // white amountsr
+			Stat.AVERAGE_BUYIN, Stat.STANDARD_DEVIATION, Stat.STANDARD_DEVIATION_HOURLY,
+			Stat.STANDARD_DEVIATION_BB_PER_100_HANDS -> {
+				val numberFormat = CurrencyUtils.getCurrencyFormatter(context, currency)
+				return TextFormat(numberFormat.format(value))
+			}
+			else -> throw FormattingException("Stat formatting of ${this.name} not handled")
+		}
+	}
+
 	val threshold: Double
 		get() {
 			return when (this) {
@@ -94,6 +148,23 @@ enum class Stat : RowRepresentable {
 
 		}
 
+	fun cumulativeLabelResId(context: Context) : String {
+		val resId = when (this) {
+			AVERAGE, AVERAGE_DURATION, NETRESULT, NET_BB_PER_100_HANDS,
+			HOURLY_RATE_BB, AVERAGE_NET_BB, ROI, WIN_RATIO, HOURLY_RATE  -> R.string.average
+			NETRESULT, DURATION -> R.string.total
+			STANDARD_DEVIATION -> R.string.net_result
+			STANDARD_DEVIATION_HOURLY -> R.string.hour_rate_without_pauses
+			STANDARD_DEVIATION_BB_PER_100_HANDS -> R.string.net_result_bb_per_100_hands
+			else -> null
+		}
+		resId?.let {
+			return context.getString(it)
+		} ?: run {
+			return NULL_TEXT
+		}
+	}
+
 	override val viewType: Int = RowViewType.TITLE_VALUE.ordinal
 }
 
@@ -117,47 +188,13 @@ class ComputedStat(var stat: Stat, var value: Double, var currency: Currency? =
 	 * Formats the value of the stat to be suitable for display
 	 */
 	fun format(context: Context): TextFormat {
-
+		return this.stat.format(this.value, this.currency, context)
-        if (this.value.isNaN()) {
-            return TextFormat(NULL_TEXT, R.color.white)
-        }
-
-        when (this.stat) {
-            // Amounts + red/green
-            Stat.NETRESULT, Stat.HOURLY_RATE, Stat.AVERAGE -> {
-                val numberFormat= CurrencyUtils.getCurrencyFormatter(context, currency)
-                val color = if (this.value >= this.stat.threshold) R.color.green else R.color.red
-                return TextFormat(numberFormat.format(this.value), color)
-            }
-            // Red/green numericValues
-            Stat.HOURLY_RATE_BB, Stat.AVERAGE_NET_BB, Stat.NET_BB_PER_100_HANDS -> {
-                val color = if (this.value >= this.stat.threshold) R.color.green else R.color.red
-                return TextFormat(this.value.formatted(), color)
-            }
-            // white integers
-            Stat.NUMBER_OF_SETS, Stat.NUMBER_OF_GAMES, Stat.HANDS_PLAYED -> {
-                return TextFormat("${value.toInt()}")
-            } // white durations
-            Stat.DURATION, Stat.AVERAGE_DURATION -> {
-                return TextFormat(value.formattedHourlyDuration())
-            } // red/green percentages
-            Stat.WIN_RATIO, Stat.ROI -> {
-                val color = if (value * 100 >= this.stat.threshold) R.color.green else R.color.red
-                return TextFormat("${(value * 100).formatted()}%", color)
-            } // white amountsr
-            Stat.AVERAGE_BUYIN, Stat.STANDARD_DEVIATION, Stat.STANDARD_DEVIATION_HOURLY,
-            Stat.STANDARD_DEVIATION_BB_PER_100_HANDS -> {
-                val numberFormat= CurrencyUtils.getCurrencyFormatter(context, currency)
-                return TextFormat(numberFormat.format(this.value))
-            }
-            else -> throw FormattingException("Stat formatting of ${this.stat.name} not handled")
-        }
 	}
 
 	/**
 	 * Returns a TextFormat instance for an evolution value located at the specified [index]
 	 */
-    fun evolutionValueFormat(index: Int) : TextFormat {
+	fun evolutionValueFormat(index: Int): TextFormat {
 		return TextFormat("undef ${index}")
 	}
 

app/src/main/java/net/pokeranalytics/android/model/interfaces/Timed.kt

@@ -1,8 +1,9 @@
 package net.pokeranalytics.android.model.interfaces
 
+import net.pokeranalytics.android.calculus.StatBase
 import java.util.*
 
-interface Timed {
+interface Timed : StatBase, Identifiable {
 
     fun startDate() : Date?
 

app/src/main/java/net/pokeranalytics/android/model/migrations/PokerAnalyticsMigration.kt

@@ -43,7 +43,6 @@ class PokerAnalyticsMigration : RealmMigration {
 			schema.get("SessionSet")?.let {
 				it.addPrimaryKey("id")
 			}
-
 			currentVersion++
 		}
 

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

@@ -13,6 +13,8 @@ import io.realm.kotlin.where
 import net.pokeranalytics.android.R
 import net.pokeranalytics.android.calculus.ComputedStat
 import net.pokeranalytics.android.calculus.Stat
+import net.pokeranalytics.android.calculus.StatFormattingException
+import net.pokeranalytics.android.calculus.TextFormat
 import net.pokeranalytics.android.exceptions.ModelException
 import net.pokeranalytics.android.model.Limit
 import net.pokeranalytics.android.model.LiveData
@@ -365,6 +367,11 @@ open class Session : RealmObject(), Savable, Editable, StaticRowRepresentableDat
 			throw ModelException("Session should have an existing Result relationship")
 		}
 
+	val bbHourlyRate: Double
+		get() {
+			return this.bbNet / this.hourlyDuration
+		}
+
 	// Manageable
 
 	override fun isValidForSave(): Boolean {
@@ -822,5 +829,45 @@ open class Session : RealmObject(), Savable, Editable, StaticRowRepresentableDat
 		}
 
 	}
+
+	// Stat Base
+
+	override fun formattedValue(stat: Stat, context: Context) : TextFormat {
+
+		this.result?.let { result ->
+
+			val value: Double? = when (stat) {
+				Stat.NETRESULT, Stat.AVERAGE, Stat.STANDARD_DEVIATION -> result.net
+				Stat.NUMBER_OF_GAMES, Stat.NUMBER_OF_SETS -> 1.0
+				Stat.AVERAGE_BUYIN -> result.buyin
+				Stat.ROI -> {
+					result.buyin?.let {
+						Stat.returnOnInvestment(result.net, it)
+					} ?: run {
+						null
+					}
+				}
+				Stat.HOURLY_RATE_BB -> this.bbHourlyRate
+				Stat.NET_BB_PER_100_HANDS, Stat.STANDARD_DEVIATION_BB_PER_100_HANDS -> Stat.netBBPer100Hands(this.bbNet, this.estimatedHands)
+				Stat.AVERAGE_NET_BB -> this.bbNet
+				Stat.DURATION, Stat.AVERAGE_DURATION -> this.netDuration.toDouble()
+				Stat.HOURLY_RATE, Stat.STANDARD_DEVIATION_HOURLY -> this.hourlyRate
+				Stat.HANDS_PLAYED -> this.estimatedHands
+				else -> throw StatFormattingException("format undefined for stat ${stat.name}")
+			}
+
+			value?.let {
+				return stat.format(it, CurrencyUtils.getCurrency(this.bankroll), context)
+			} ?: run {
+				return TextFormat(NULL_TEXT)
+			}
+
+		} ?: run {
+			throw java.lang.IllegalStateException("Asking for stats on Session without Result")
+		}
+
+	}
+
+
 }
 

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

@@ -1,11 +1,15 @@
 package net.pokeranalytics.android.model.realm
 
+import android.content.Context
 import io.realm.Realm
 import io.realm.RealmObject
 import io.realm.RealmResults
 import io.realm.annotations.Ignore
 import io.realm.annotations.LinkingObjects
 import io.realm.annotations.PrimaryKey
+import net.pokeranalytics.android.calculus.Stat
+import net.pokeranalytics.android.calculus.StatFormattingException
+import net.pokeranalytics.android.calculus.TextFormat
 import net.pokeranalytics.android.model.filter.Filterable
 import net.pokeranalytics.android.model.filter.QueryCondition
 import net.pokeranalytics.android.model.interfaces.Timed
@@ -15,7 +19,7 @@ import java.util.*
 open class SessionSet() : RealmObject(), Timed, Filterable {
 
 	@PrimaryKey
-	var id = UUID.randomUUID().toString()
+	override var id = UUID.randomUUID().toString()
 
 	var startDate: Date = Date()
         set(value) {
@@ -74,6 +78,16 @@ open class SessionSet() : RealmObject(), Timed, Filterable {
 
     var bbNet: Double = 0.0
 
+	override fun formattedValue(stat: Stat, context: Context) : TextFormat {
+		return when (stat) {
+			Stat.NETRESULT, Stat.AVERAGE -> stat.format(this.ratedNet, null, context)
+			Stat.DURATION, Stat.AVERAGE_DURATION -> stat.format(this.netDuration.toDouble(), null, context)
+			Stat.HOURLY_RATE -> stat.format(this.hourlyRate, null, context)
+			Stat.HANDS_PLAYED -> stat.format(this.estimatedHands, null, context)
+			else -> throw StatFormattingException("format undefined for stat ${stat.name}")
+		}
+	}
+
 	enum class Field(val identifier: String) {
 		RATED_NET("ratedNet"),
 		HOURLY_RATE("hourlyRate"),

app/src/main/java/net/pokeranalytics/android/ui/activity/GraphActivity.kt

@@ -9,9 +9,9 @@ import net.pokeranalytics.android.calculus.Stat
 import net.pokeranalytics.android.ui.activity.components.PokerAnalyticsActivity
 import net.pokeranalytics.android.ui.fragment.GraphFragment
 
-class GraphParameters(stat: Stat, entries: List<out Entry>) {
+class GraphParameters(stat: Stat, entries: List<Entry>) {
 	var stat: Stat = stat
-	var entries: List<out Entry> = entries
+	var entries: List<Entry> = entries
 }
 
 class GraphActivity : PokerAnalyticsActivity() {

app/src/main/java/net/pokeranalytics/android/ui/activity/HomeActivity.kt

@@ -78,7 +78,7 @@ class HomeActivity : PokerAnalyticsActivity() {
 
 		// observe currency changes
 		this.currencies = realm.where(Currency::class.java).findAll()
-		this.currencies.addChangeListener { t, set ->
+		this.currencies.addChangeListener { t, _ ->
 
 			realm.beginTransaction()
 			t.forEach {

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

@@ -7,17 +7,20 @@ import android.view.ViewGroup
 import com.github.mikephil.charting.data.Entry
 import com.github.mikephil.charting.data.LineData
 import com.github.mikephil.charting.data.LineDataSet
+import com.github.mikephil.charting.highlight.Highlight
+import com.github.mikephil.charting.listener.OnChartValueSelectedListener
 import kotlinx.android.synthetic.main.fragment_graph.*
 import net.pokeranalytics.android.R
 import net.pokeranalytics.android.calculus.Stat
 import net.pokeranalytics.android.ui.fragment.components.PokerAnalyticsFragment
+import net.pokeranalytics.android.ui.graph.setStyle
 
 interface GraphDataSource {
 
 
 }
 
-class GraphFragment : PokerAnalyticsFragment() {
+class GraphFragment : PokerAnalyticsFragment(), OnChartValueSelectedListener {
 
 	lateinit var dataSource: GraphDataSource
 
@@ -46,8 +49,48 @@ class GraphFragment : PokerAnalyticsFragment() {
 	private fun initUI() {
 
 		val dataSet = LineDataSet(this.entries, this.stat.name)
+		val colors = arrayOf(R.color.green_light).toIntArray()
+		dataSet.setColors(colors, context)
 		val lineData = LineData(listOf(dataSet))
+
+		this.chart.setStyle()
+
 		this.chart.data = lineData
+		this.chart.setOnChartValueSelectedListener(this)
+
+	}
+
+	// OnChartValueSelectedListener
+
+	override fun onNothingSelected() {
+		// nothing to do
+	}
+
+	override fun onValueSelected(e: Entry?, h: Highlight?) {
+
+		e?.let { entry ->
+			h?.let { highlight ->
+
+				val id = entry.data as String
+				val item = getRealm().where(this.stat.underlyingClass).equalTo("id", id).findAll().firstOrNull()
+				item?.let {
+
+					val date = it.startDate()
+
+					val entryStatName = this.stat.localizedTitle(requireContext())
+					val entryValue = it.formattedValue(this.stat, requireContext())
+
+					val totalStatName = this.stat.cumulativeLabelResId(requireContext())
+					val totalStatValue = this.stat.format(e.y.toDouble(), null, requireContext())
+
+				}
+
+				this.text.text = ""
+
+
+
+			}
+		}
 
 	}
 

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

@@ -112,7 +112,7 @@ class HistoryFragment : PokerAnalyticsFragment(), LiveRowRepresentableDataSource
 	private fun initData() {
 
 		this.realmSessions = getRealm().where<Session>().findAll().sort("startDate", Sort.DESCENDING)
-		this.realmSessions.addChangeListener { t, changeSet ->
+		this.realmSessions.addChangeListener { _, changeSet ->
 			this.historyAdapter.refreshData()
 			this.historyAdapter.notifyDataSetChanged()
 		}

app/src/main/java/net/pokeranalytics/android/ui/graph/GraphExtensions.kt

@@ -0,0 +1,66 @@
+package net.pokeranalytics.android.ui.graph
+
+import com.github.mikephil.charting.charts.BarChart
+import com.github.mikephil.charting.charts.BarLineChartBase
+import com.github.mikephil.charting.charts.LineChart
+
+fun BarChart.setStyle() {
+	GraphHelper.setStyle(this)
+}
+
+fun LineChart.setStyle() {
+	GraphHelper.setStyle(this)
+}
+
+class GraphHelper {
+
+	companion object {
+
+		fun setStyle(chart: BarLineChartBase<*>) {
+
+//			this.xAxis.axisLineColor = ContextCompat.getColor(context, R.color.) ChartAppearance.defaultColor
+//					this.xAxis.axisLineWidth = ChartAppearance.lineWidth
+//			this.xAxis.enableGridDashedLine(3.0f, 5.0f, 1.0f)
+//
+//			this.xAxis.labelTextColor = ChartAppearance.defaultColor
+//			this.xAxis.labelFont = Fonts.graphAxis
+//			this.xAxis.labelCount = 4
+//			this.xAxis.labelPosition = .bottom
+//
+//					this.xAxis.drawLabelsEnabled = true
+//			this.xAxis.drawGridLinesEnabled = true
+//			this.xAxis.granularity = 1.0
+//			this.xAxis.granularityEnabled = true
+//			this.xAxis.enabled = true
+//
+//			// Y Axis
+//			this.leftAxis.drawAxisLineEnabled = false
+//			this.leftAxis.drawGridLinesEnabled = true
+//			this.leftAxis.gridLineDashLengths = [3.0, 5.0]
+//
+//			this.leftAxis.drawZeroLineEnabled = true
+//			this.leftAxis.zeroLineWidth = ChartAppearance.lineWidth
+//			this.leftAxis.zeroLineColor = ChartAppearance.defaultColor
+//
+//			this.leftAxis.granularityEnabled = true
+//			this.leftAxis.granularity = 1.0
+//
+//			this.leftAxis.labelTextColor = ChartAppearance.defaultColor
+//			this.leftAxis.labelFont = Fonts.graphAxis
+//			this.leftAxis.labelCount = small ? 1 : 7 // @todo not great if interval is [0..2] for number of records as we get decimals
+//
+//			if timeYAxis {
+//				this.leftAxis.valueFormatter = HourValueFormatter()
+//			} else {
+//				this.leftAxis.valueFormatter = LargeNumberFormatter()
+//			}
+//
+//			this.rightAxis.enabled = false
+//
+//			this.legend.enabled = false
+
+		}
+
+	}
+
+}

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

@@ -62,7 +62,6 @@ enum class SessionRow : RowRepresentable {
 								START_DATE, END_DATE, BREAK_TIME, COMMENT
 							)
 						}
-						else -> arrayListOf()
 					}
 				}
 				Session.Type.CASH_GAME.ordinal -> {

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

@@ -6,9 +6,20 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
+    <TextView
+            android:id="@+id/text"
+            android:textColor="@color/white"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            android:layout_marginStart="8dp"
+            app:layout_constraintTop_toTopOf="@+id/chart"
+            android:layout_marginTop="8dp"/>
+
     <com.github.mikephil.charting.charts.LineChart
             android:id="@+id/chart"
             android:layout_width="match_parent"
-            android:layout_height="match_parent" />
+            android:layout_height="match_parent"/>
 
 </androidx.constraintlayout.widget.ConstraintLayout>