feat(event-edit): add initial location to LocationPicker and change screens accordingly

Author: Redd87

app/src/main/java/com/android/unio/ui/components/EventEditComponents.kt

@@ -78,13 +78,15 @@ const val DROP_DOWN_MAX_ROWS = 3
  *
  * @param locationSearchViewModel NominatimLocationSearchViewModel : ViewModel for searching
  *   locations.
+ * @param initialLocation Location? : Initial location to pre-fill the text field.
  * @param textFieldTestTag String : Test tag for the text field.
  * @param dropdownTestTag String : Test tag for the dropdown menu.
  * @param onLocationSelected (Location) -> Unit : Lambda that is called when a location is selected.
  */
 @Composable
 fun NominatimLocationPicker(
     locationSearchViewModel: NominatimLocationSearchViewModel,
+    initialLocation: Location?,
     textFieldTestTag: String,
     dropdownTestTag: String,
     onLocationSelected: (Location) -> Unit
@@ -95,11 +97,14 @@ fun NominatimLocationPicker(
   val locationSuggestions by locationSearchViewModel.locationSuggestions.collectAsState()
   var showDropdown by remember { mutableStateOf(false) }
 
+  var shouldDisplayInitialLocation by remember { mutableStateOf(true) }
+
   Box(modifier = Modifier.fillMaxWidth()) {
     OutlinedTextField(
-        value = locationQuery,
+        value = if (shouldDisplayInitialLocation) initialLocation?.name ?: "" else locationQuery,
         onValueChange = {
           locationSearchViewModel.setQuery(it)
+          shouldDisplayInitialLocation = false
           showDropdown = true
         },
         label = { Text(context.getString(R.string.event_creation_location_label)) },

app/src/main/java/com/android/unio/ui/event/EventCreation.kt

@@ -191,6 +191,7 @@ fun EventCreationScreen(
 
           NominatimLocationPicker(
               locationSearchViewModel,
+              null,
               EventCreationTestTags.LOCATION,
               EventCreationTestTags.LOCATION_SUGGESTION_ITEM) {
                 selectedLocation = it

app/src/main/java/com/android/unio/ui/event/EventEdit.kt

@@ -109,7 +109,8 @@ fun EventEditScreen(
   val initialEndTime = getHHMMInMillisFromTimestamp(eventToEdit.endDate)
   val initialEndDate = eventToEdit.endDate.toDate().time - initialEndTime
 
-  var selectedLocation by remember { mutableStateOf<Location?>(null) }
+  val initialLocation: Location? = eventToEdit.location
+  var selectedLocation by remember { mutableStateOf<Location?>(eventToEdit.location) }
 
   val eventBannerUri = remember { mutableStateOf<Uri>(eventToEdit.image.toUri()) }
 
@@ -221,6 +222,7 @@ fun EventEditScreen(
 
           NominatimLocationPicker(
               locationSearchViewModel,
+              initialLocation,
               EventEditTestTags.LOCATION,
               EventEditTestTags.LOCATION_SUGGESTION_ITEM) {
                 selectedLocation = it