FEAT: implement delete all feature in reminders list

jploz · jploz · commit f7a7f1142c14 · 2021-04-28T11:00:06.000+02:00
A menu item for deleting all items was added to the menu and
all reminders can be deleted by clicking it.
diff --git a/app/src/main/java/com/udacity/locationreminder/locationreminders/reminderslist/ReminderListFragment.kt b/app/src/main/java/com/udacity/locationreminder/locationreminders/reminderslist/ReminderListFragment.kt
@@ -118,6 +118,9 @@ class ReminderListFragment : BaseFragment() {
                         navigateToAuthenticationActivity()
                     }
             }
+            R.id.action_delete_all -> {
+                _viewModel.deleteAllReminders()
+            }
         }
         return super.onOptionsItemSelected(item)
     }
diff --git a/app/src/main/java/com/udacity/locationreminder/locationreminders/reminderslist/RemindersListViewModel.kt b/app/src/main/java/com/udacity/locationreminder/locationreminders/reminderslist/RemindersListViewModel.kt
@@ -57,4 +57,12 @@ class RemindersListViewModel(
     private fun invalidateShowNoData() {
         showNoData.value = remindersList.value == null || remindersList.value!!.isEmpty()
     }
+
+    fun deleteAllReminders() {
+        viewModelScope.launch {
+            dataSource.deleteAllReminders()
+            remindersList.value = ArrayList<ReminderDataItem>()
+            invalidateShowNoData()
+        }
+    }
 }
diff --git a/app/src/main/res/menu/main_menu.xml b/app/src/main/res/menu/main_menu.xml
@@ -4,5 +4,11 @@
     <item
         android:id="@+id/logout"
         android:title="@string/logout"
-        app:showAsAction="always" />
+        app:showAsAction="never" />
+    <item
+        android:id="@+id/action_delete_all"
+        android:icon="@drawable/ic_baseline_delete_forever_24"
+        android:title="@string/delete_all"
+        app:showAsAction="never" />
+
 </menu>

Original file line number	Diff line number	Diff line change
`@@ -118,6 +118,9 @@ class ReminderListFragment : BaseFragment() {`
`118`	`118`	`navigateToAuthenticationActivity()`
`119`	`119`	`}`
`120`	`120`	`}`
	`121`	`+ R.id.action_delete_all -> {`
	`122`	`+ _viewModel.deleteAllReminders()`
	`123`	`+ }`
`121`	`124`	`}`
`122`	`125`	`return super.onOptionsItemSelected(item)`
`123`	`126`	`}`
Original file line number	Diff line number	Diff line change
`@@ -57,4 +57,12 @@ class RemindersListViewModel(`
`57`	`57`	`private fun invalidateShowNoData() {`
`58`	`58`	`showNoData.value = remindersList.value == null \|\| remindersList.value!!.isEmpty()`
`59`	`59`	`}`
	`60`	`+`
	`61`	`+ fun deleteAllReminders() {`
	`62`	`+ viewModelScope.launch {`
	`63`	`+ dataSource.deleteAllReminders()`
	`64`	`+ remindersList.value = ArrayList<ReminderDataItem>()`
	`65`	`+ invalidateShowNoData()`
	`66`	`+ }`
	`67`	`+ }`
`60`	`68`	`}`