Improve session UI management

app/src/main/java/net/pokeranalytics/android/PokerAnalyticsApplication.kt

@@ -45,10 +45,11 @@ class PokerAnalyticsApplication : Application() {
 		// Add observer on session time frame changes
 		this.sessions = realm.where(Session::class.java).findAll() // monitor session deletions
 		this.sessions?.addChangeListener { t, changeSet ->
-
+			/*
 			val deletedSessions =
 				realm.where(Session::class.java).`in`("id", changeSet.deletions.toTypedArray()).findAll()
 			deletedSessions.forEach { it.cleanup() }
+			*/
 		}
 
 		if (BuildConfig.DEBUG) {

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

@@ -143,8 +143,8 @@ open class Session : RealmObject(), SessionInterface, RowRepresentableDataSource
 	 * TODO: Cascade delete?
 	 */
 	fun delete() {
+		cleanup()
 		realm.executeTransaction {
-			cleanup()
 			deleteFromRealm()
 		}
 	}
@@ -345,13 +345,17 @@ open class Session : RealmObject(), SessionInterface, RowRepresentableDataSource
 				}
 			}
 			//TODO: Update
-			SessionRow.START_DATE -> if (value is Date) {
-				val timeFrameToUpdate = if (timeFrame != null) timeFrame as TimeFrame else realm.createObject(TimeFrame::class.java)
-				timeFrameToUpdate.setDate(value, null)
-				timeFrame = timeFrameToUpdate
+			SessionRow.START_DATE -> if (value is Date?) {
+				if (value == null) {
+					timeFrame = null
+				} else {
+					val timeFrameToUpdate = if (timeFrame != null) timeFrame as TimeFrame else realm.createObject(TimeFrame::class.java)
+					timeFrameToUpdate.setDate(value, null)
+					timeFrame = timeFrameToUpdate
+				}
 			}
 			//TODO: Update
-			SessionRow.END_DATE -> if (value is Date) {
+			SessionRow.END_DATE -> if (value is Date?) {
 				val timeFrameToUpdate = if (timeFrame != null) timeFrame as TimeFrame else realm.createObject(TimeFrame::class.java)
 				timeFrameToUpdate.setDate(null, value)
 				timeFrame = timeFrameToUpdate

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

@@ -91,11 +91,17 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 	override fun clickOnClear(row: RowRepresentable) {
 		currentSession.updateValue(null, row)
 		sessionAdapter.refreshRow(row)
+		when(row) {
+			SessionRow.START_DATE, SessionRow.END_DATE -> updateSessionUI()
+		}
 	}
 
 	override fun setValue(value: Any?, row: RowRepresentable) {
 		currentSession.updateValue(value, row)
 		sessionAdapter.refreshRow(row)
+		when(row) {
+			SessionRow.START_DATE, SessionRow.END_DATE -> updateSessionUI()
+		}
 	}
 
 	/**