notes: add icons to use previous/next event as template

app/src/main/java/it/danieleverducci/lunatracker/MainActivity.kt

@@ -302,7 +302,7 @@ class MainActivity : AppCompatActivity() {
         val clearTextView = dialogView.findViewById<TextView>(R.id.notes_clear)
         val prevTextView = dialogView.findViewById<TextView>(R.id.notes_template_prev)
 
-        fun update(current: LunaEvent) {
+        fun updateContent(current: LunaEvent) {
             val prevEvent = getPreviousSameEvent(current, allEvents)
             val nextEvent = getNextSameEvent(current, allEvents)
 
@@ -318,7 +318,7 @@ class MainActivity : AppCompatActivity() {
                     if (useQuantity) {
                         qtyET.setText(nextEvent.quantity.toString())
                     }
-                    update(nextEvent)
+                    updateContent(nextEvent)
                 }
             } else {
                 nextTextView.visibility = View.GONE
@@ -331,26 +331,27 @@ class MainActivity : AppCompatActivity() {
                     if (useQuantity) {
                         qtyET.setText(prevEvent.quantity.toString())
                     }
-                    update(prevEvent)
+                    updateContent(prevEvent)
                 }
             } else {
                 nextTextView.visibility = View.GONE
             }
         }
 
-        update(lunaEvent)
-
         clearTextView.setOnClickListener {
             notesET.setText("")
             if (useQuantity) {
                 qtyET.setText("")
             }
+            updateContent(lunaEvent)
         }
 
         if (!useQuantity) {
             qtyET.visibility = View.GONE
         }
 
+        updateContent(lunaEvent)
+
         d.setPositiveButton(android.R.string.ok) { dialogInterface, i ->
             val qtyStr = qtyET.text.toString()
             if (qtyStr.isNotEmpty() && useQuantity) {