[android] Add a new alert dialog when we remove the last list

Signed-off-by: Jean-Baptiste <jeanbaptiste.charron@outlook.fr>

android/app/src/main/java/app/organicmaps/bookmarks/BookmarkCategoriesFragment.java

@@ -197,10 +197,8 @@ public class BookmarkCategoriesFragment extends BaseMwmRecyclerFragment<Bookmark
                                         () -> onShareActionSelected(mSelectedCategory, KmlFileType.Text)));
       items.add(new MenuBottomSheetItem(R.string.export_file_gpx, R.drawable.ic_file_gpx,
                                         () -> onShareActionSelected(mSelectedCategory, KmlFileType.Gpx)));
-      // Disallow deleting the last category
-      if (getAdapter().getBookmarkCategories().size() > 1)
-        items.add(new MenuBottomSheetItem(R.string.delete, R.drawable.ic_delete,
-                                          () -> onDeleteActionSelected(mSelectedCategory)));
+      items.add(new MenuBottomSheetItem(R.string.delete, R.drawable.ic_delete,
+                                        () -> onDeleteActionSelected(mSelectedCategory)));
     }
     return items;
   }
@@ -297,8 +295,19 @@ public class BookmarkCategoriesFragment extends BaseMwmRecyclerFragment<Bookmark
 
   private void onDeleteActionSelected(@NonNull BookmarkCategory category)
   {
-    BookmarkManager.INSTANCE.deleteCategory(category.getId());
-    getAdapter().notifyDataSetChanged();
+    // Disallow deleting the last category
+    if ((getAdapter().getBookmarkCategories().size() > 1))
+    {
+        BookmarkManager.INSTANCE.deleteCategory(category.getId());
+        getAdapter().notifyDataSetChanged();
+    }
+    else
+    {
+        new MaterialAlertDialogBuilder(requireActivity())
+                .setMessage(R.string.unable_to_delete_list)
+                .setPositiveButton(android.R.string.ok, (dialog, which) -> dialog.dismiss())
+                .show();
+    }
   }
 
   private void onSettingsActionSelected(@NonNull BookmarkCategory category)

android/app/src/main/java/app/organicmaps/settings/BaseXmlSettingsFragment.java

@@ -6,10 +6,12 @@ import android.view.View;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.XmlRes;
+import androidx.core.content.ContextCompat;
 import androidx.core.view.ViewCompat;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
 import androidx.recyclerview.widget.RecyclerView;
+import app.organicmaps.R;
 import app.organicmaps.util.Utils;
 import app.organicmaps.util.WindowInsetUtils.ScrollableContentInsetsListener;
 
@@ -42,6 +44,7 @@ abstract class BaseXmlSettingsFragment extends PreferenceFragmentCompat
   public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState)
   {
     super.onViewCreated(view, savedInstanceState);
+    view.setBackgroundColor(ContextCompat.getColor(requireContext(), R.color.bg_cards));
     RecyclerView recyclerView = getListView();
     ViewCompat.setOnApplyWindowInsetsListener(recyclerView, new ScrollableContentInsetsListener(recyclerView));
   }

android/app/src/main/res/layout-land/about.xml

@@ -5,7 +5,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?appBackground"
+    android:background="?cardBackground"
     android:clipToPadding="false"
     android:fadeScrollbars="false"
     android:fillViewport="true">

android/app/src/main/res/layout-land/fragment_osm_login.xml

@@ -13,7 +13,7 @@
     android:id="@+id/scrollView"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?appBackground"
+    android:background="?cardBackground"
     android:fadeScrollbars="false"
     android:fillViewport="true"
     android:clipToPadding="false">

android/app/src/main/res/layout-w1020dp/activity_settings.xml

@@ -3,8 +3,7 @@
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
-  android:orientation="vertical"
-  android:background="?appBackground">
+  android:orientation="vertical">
 
   <include
     layout="@layout/toolbar_extended"/>
@@ -18,8 +17,7 @@
       android:id="@+id/fragment_container"
       style="@style/MwmWidget.FrameLayout.Elevation"
       android:layout_width="match_parent"
-      android:layout_height="match_parent"
-      android:background="?appBackground"/>
+      android:layout_height="match_parent"/>
   </com.google.android.material.card.MaterialCardView>
 
 </FrameLayout>

android/app/src/main/res/layout/about.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?appBackground"
+    android:background="?cardBackground"
     android:clipToPadding="false"
     android:fadeScrollbars="false"
     android:fillViewport="true">

android/app/src/main/res/layout/activity_download_resources.xml

@@ -5,7 +5,7 @@
   xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
-  android:background="?appBackground">
+  android:background="?cardBackground">
   <androidx.constraintlayout.widget.ConstraintLayout
     android:layout_width="match_parent"
     android:layout_height="match_parent"

android/app/src/main/res/layout/activity_map_placeholder.xml

@@ -4,7 +4,7 @@
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   xmlns:app="http://schemas.android.com/apk/res-auto"
-  android:background="?appBackground"
+  android:background="?cardBackground"
   android:gravity="center"
   android:orientation="vertical">
 

android/app/src/main/res/layout/activity_request_permissions.xml

@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?appBackground"
+    android:background="?cardBackground"
     android:gravity="center"
     android:orientation="vertical">
 

android/app/src/main/res/layout/activity_settings.xml

@@ -3,8 +3,7 @@
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
-  android:orientation="vertical"
-  android:background="?appBackground">
+  android:orientation="vertical">
 
   <include
     layout="@layout/toolbar_default"/>

android/app/src/main/res/layout/fragment_driving_options.xml

@@ -2,7 +2,7 @@
 <LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
-  android:background="?appBackground"
+  android:background="?cardBackground"
   android:orientation="vertical"
   android:layout_width="match_parent"
   android:layout_height="match_parent">

android/app/src/main/res/layout/fragment_osm_login.xml

@@ -13,7 +13,7 @@
     android:id="@+id/scrollView"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?appBackground"
+    android:background="?cardBackground"
     android:fadeScrollbars="false"
     android:fillViewport="true"
     android:clipToPadding="false">

android/app/src/main/res/layout/fragment_osm_profile.xml

@@ -6,7 +6,7 @@
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical"
-  android:background="?appBackground">
+  android:background="?cardBackground">
   <com.google.android.material.appbar.MaterialToolbar
     android:id="@+id/toolbar"
     style="@style/MwmWidget.ToolbarStyle"

android/app/src/main/res/layout/fragment_prefs_storage.xml

@@ -5,7 +5,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:background="?appBackground">
+    android:background="?cardBackground">
 
   <com.google.android.material.textview.MaterialTextView
       android:id="@+id/header"

android/app/src/main/res/layout/place_page_map_too_old.xml

@@ -9,7 +9,7 @@ android:layout_marginHorizontal="@dimen/margin_base"
 android:layout_marginTop="@dimen/margin_half"
 app:strokeWidth="1dp"
 app:strokeColor="@color/base_accent"
-app:cardBackgroundColor="?cardBackground">
+app:cardBackgroundColor="@color/bg_cards">
 
 <LinearLayout
   android:layout_width="match_parent"

android/app/src/main/res/values-night/themes.xml

@@ -150,8 +150,6 @@
     <item name="colorSurfaceContainer">@color/md_theme_surfaceContainer</item>
     <item name="colorSurfaceContainerHigh">@color/md_theme_surfaceContainerHigh</item>
     <item name="colorSurfaceContainerHighest">@color/md_theme_surfaceContainerHighest</item>
-
-    <item name="appBackground">?android:attr/colorBackground</item>
   </style>
 
   <style name="MwmTheme" parent="MwmTheme.Base"/>

android/app/src/main/res/values/colors.xml

@@ -64,7 +64,6 @@
   <color name="bg_cards">@android:color/white</color>
   <color name="bg_panel">@color/bg_window</color>
   <color name="bg_primary_dark">#37653F</color> <!-- secondary dark -->
-  <color name="bg_app">@android:color/white</color>
 
   <color name="bg_dialog_translucent">#BB000000</color>
   <color name="bg_text_translucent">#99FFFFFF</color>

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

@@ -974,4 +974,5 @@
     <string name="download_resources_custom_url_hint">https://cdn-fi-1.comaps.app/</string>
     <string name="download_resources_custom_url_summary_none">Not set</string>
     <string name="download_resources_custom_url_error_scheme">Please enter a full URL starting with https:// and ending with /</string>
+    <string name="unable_to_delete_list">The last list cannot be deleted. Create a new list to remove it</string>
 </resources>

android/app/src/main/res/values/themes-attrs.xml

@@ -6,7 +6,6 @@
     <attr name="textDialogTheme" format="reference" />
     <attr name="windowBackgroundForced" format="reference|color" />
     <attr name="cardBackground" format="reference" />
-    <attr name="appBackground" format="reference|color" />
     <attr name="clickableBackground" format="reference" />
     <attr name="statusBar" format="color" />
     <attr name="secondary" format="color" />

android/app/src/main/res/values/themes.xml

@@ -158,8 +158,6 @@
     <item name="colorSurfaceContainerHigh">@color/md_theme_surfaceContainerHigh</item>
     <item name="colorSurfaceContainerHighest">@color/md_theme_surfaceContainerHighest</item>
 
-    <item name="appBackground">@color/bg_app</item>
-
   </style>
 
   <style name="MwmTheme" parent="MwmTheme.Base"/>

data/countries_meta.txt

@@ -1,10 +1,4 @@
 {
-"World": {
- "languages": ["int_name", "en", "default"]
-},
-"WorldCoasts": {
- "languages": ["int_name", "en", "default"]
-},
 "Abkhazia": {
  "languages": ["ab", "ru"]
 },