Prompt before deleting lists (#2043)

* Prompt before deleting lists. #1998

* Address pull request feedback

app/src/main/java/com/keylesspalace/tusky/ListsActivity.kt

@@ -132,9 +132,7 @@ class ListsActivity : BaseActivity(), Injectable, HasAndroidInjector {
                         else R.string.action_rename_list) { _, _ ->
                     onPickedDialogName(editText.text, list?.id)
                 }
-                .setNegativeButton(android.R.string.cancel) { d, _ ->
+                .setNegativeButton(android.R.string.cancel, null)
-                    d.dismiss()
-                }
                 .show()
 
         val positiveButton = dialog.getButton(Dialog.BUTTON_POSITIVE)
@@ -145,6 +143,16 @@ class ListsActivity : BaseActivity(), Injectable, HasAndroidInjector {
         editText.text?.let { editText.setSelection(it.length) }
     }
 
+    private fun showListDeleteDialog(list: MastoList) {
+        AlertDialog.Builder(this)
+                .setMessage(getString(R.string.dialog_delete_list_warning, list.title))
+                .setPositiveButton(R.string.action_delete){ _, _ ->
+                    viewModel.deleteList(list.id)
+                }
+                .setNegativeButton(android.R.string.cancel, null)
+                .show()
+    }
+
 
     private fun update(state: ListsViewModel.State) {
         adapter.submitList(state.lists)
@@ -201,7 +209,7 @@ class ListsActivity : BaseActivity(), Injectable, HasAndroidInjector {
                 when (item.itemId) {
                     R.id.list_edit -> openListSettings(list)
                     R.id.list_rename -> renameListDialog(list)
-                    R.id.list_delete -> viewModel.deleteList(list.id)
+                    R.id.list_delete -> showListDeleteDialog(list)
                     else -> return@setOnMenuItemClickListener false
                 }
                 true

app/src/main/res/values/strings.xml

@@ -596,6 +596,7 @@
     <string name="wellbeing_hide_stats_posts">Hide quantitative stats on posts</string>
     <string name="wellbeing_hide_stats_profile">Hide quantitative stats on profiles</string>
     <string name="error_upload_max_media_reached">You cannot upload more than %1$d media attachments.</string>
+    <string name="dialog_delete_list_warning">Do you really want to delete the list %s?</string>
 
     <string name="wellbeing_mode_notice">Some information that might affect your mental wellbeing will be hidden. This includes:\n\n
         - Favorite/Boost/Follow notifications\n