Add delete empty session behavior when back pressed

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

@@ -3,6 +3,7 @@ package net.pokeranalytics.android.ui.activity
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
+import android.view.MenuItem
 import kotlinx.android.synthetic.main.activity_session.*
 import net.pokeranalytics.android.R
 import net.pokeranalytics.android.ui.activity.components.PokerAnalyticsActivity
@@ -18,15 +19,12 @@ class SessionActivity: PokerAnalyticsActivity() {
 	companion object {
 		fun newInstance(context: Context, isTournament: Boolean? = false, sessionId: String? = "") {
 			val intent = Intent(context, SessionActivity::class.java)
-
 			isTournament?.let {
 				intent.putExtra(IntentKey.IS_TOURNAMENT.keyName, isTournament)
 			}
-
 			sessionId?.let {
 				intent.putExtra(IntentKey.SESSION_ID.keyName, sessionId)
 			}
-
 			context.startActivity(intent)
 		}
 
@@ -39,21 +37,28 @@ class SessionActivity: PokerAnalyticsActivity() {
 		initUI()
 	}
 
+	override fun onOptionsItemSelected(item: MenuItem?): Boolean {
+		item?.let {
+			if (it.itemId == android.R.id.home) {
+				onBackPressed()
+			}
+		}
+		return super.onOptionsItemSelected(item)
+	}
+
+	override fun onBackPressed() {
+		super.onBackPressed()
+		(sessionFragment as SessionFragment).onBackPressed()
+	}
+
 	/**
 	 * Init UI
 	 */
 	private fun initUI() {
 		val sessionId = intent.getStringExtra(IntentKey.SESSION_ID.keyName)
 		val isTournament = intent.getBooleanExtra(IntentKey.IS_TOURNAMENT.keyName, false)
-		val fragment = newSessionFragment as SessionFragment
+		val fragment = sessionFragment as SessionFragment
 		fragment.setData(isTournament, sessionId)
 	}
 
-	/**
-	 * Init data
-	 */
-	private fun initData() {
-
-	}
-
 }

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

@@ -38,6 +38,7 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 
 	private var sessionMenu: Menu? = null
 	private val oldRows: ArrayList<RowRepresentable> = ArrayList()
+	private var sessionHasBeenCustomized = false
 	private val handler: Handler = Handler()
 	private val refreshTimer: Runnable = object : Runnable {
 		override fun run() {
@@ -105,6 +106,7 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 	}
 
 	override fun onRowValueChanged(value: Any?, row: RowRepresentable) {
+		sessionHasBeenCustomized = true
 		currentSession.updateValue(value, row)
 		sessionAdapter.refreshRow(row)
 		when (row) {
@@ -134,6 +136,7 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 		}
 
 		floatingActionButton.setOnClickListener {
+			sessionHasBeenCustomized = true
 			manageSessionState()
 		}
 	}
@@ -278,6 +281,7 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 		val sessionRealm = realm.where<Session>().equalTo("id", sessionId).findFirst()
 		if (sessionRealm != null) {
 			currentSession = sessionRealm
+			sessionHasBeenCustomized = true
 		} else {
 			realm.beginTransaction()
 			currentSession = Session.newInstance(realm, isTournament)
@@ -296,6 +300,7 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 					updateSessionUI()
 				}
 			}
+			sessionHasBeenCustomized = false
 		}
 
 
@@ -308,4 +313,13 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 		updateSessionUI()
 	}
 
+	/**
+	 * Called when the user pressed back on the parent activity
+	 */
+	fun onBackPressed() {
+		if (!sessionHasBeenCustomized) {
+			currentSession.delete()
+		}
+	}
+
 }

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

@@ -6,7 +6,7 @@
 	android:orientation="vertical">
 
 	<fragment
-		android:id="@+id/newSessionFragment"
+		android:id="@+id/sessionFragment"
 		android:name="net.pokeranalytics.android.ui.fragment.SessionFragment"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"