Feature: Display banner when all sections are hidden on the sidebar

Author: yaira2

src/Files.App/Strings/en-US/Resources.resw

@@ -3508,7 +3508,7 @@
   <data name="StatusCenter_GitCloneInProgress_SubHeader" xml:space="preserve">
     <value>Cloning {0} from "{1}" to "{2}"</value>
     <comment>Shown in a StatusCenter card.</comment>
-  </data>	
+  </data>
   <data name="StatusCenter_InstallFontCanceled_Header" xml:space="preserve">
     <value>Canceled installing {0} fonts</value>
     <comment>Shown in a StatusCenter card.</comment>
@@ -3540,7 +3540,7 @@
   <data name="StatusCenter_InstallFontInProgress_SubHeader" xml:space="preserve">
     <value>Installing {0} font(s) from "{1}"</value>
     <comment>Shown in a StatusCenter card.</comment>
-  </data>	
+  </data>
   <data name="StatusCenter_CopyCanceled_Header" xml:space="preserve">
     <value>Canceled copying {0} item(s) to "{1}"</value>
     <comment>Shown in a StatusCenter card.</comment>
@@ -4193,4 +4193,10 @@
   <data name="EnableOmnibar" xml:space="preserve">
     <value>Enable Omnibar</value>
   </data>
+  <data name="SectionsHidden" xml:space="preserve">
+    <value>Sections hidden</value>
+  </data>  
+  <data name="SectionsHiddenMessage" xml:space="preserve">
+    <value>You can add the sections back by right-clicking the sidebar area and selecting the sections you want to add.</value>
+  </data>
 </root>

src/Files.App/ViewModels/UserControls/SidebarViewModel.cs

@@ -59,6 +59,7 @@ public SidebarDisplayMode SidebarDisplayMode
 				if (SetProperty(ref sidebarDisplayMode, value))
 				{
 					OnPropertyChanged(nameof(IsSidebarCompactSize));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					IsSidebarOpen = sidebarDisplayMode == SidebarDisplayMode.Expanded;
 					UpdateTabControlMargin();
 				}
@@ -134,6 +135,16 @@ public bool IsSidebarOpen
 			}
 		}
 
+		public bool AreSectionsHidden =>
+			!ShowPinnedFoldersSection &&
+			!ShowLibrarySection &&
+			!ShowDrivesSection &&
+			!ShowCloudDrivesSection &&
+			!ShowNetworkSection &&
+			(!ShowWslSection || WSLDistroManager.Distros.Any() == false) &&
+			!ShowFileTagsSection &&
+			SidebarDisplayMode is not SidebarDisplayMode.Compact;
+
 		public bool ShowPinnedFoldersSection
 		{
 			get => UserSettingsService.GeneralSettingsService.ShowPinnedSection;
@@ -635,30 +646,37 @@ private async void UserSettingsService_OnSettingChangedEvent(object sender, Sett
 				case nameof(UserSettingsService.GeneralSettingsService.ShowPinnedSection):
 					await UpdateSectionVisibilityAsync(SectionType.Pinned, ShowPinnedFoldersSection);
 					OnPropertyChanged(nameof(ShowPinnedFoldersSection));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					break;
 				case nameof(UserSettingsService.GeneralSettingsService.ShowLibrarySection):
 					await UpdateSectionVisibilityAsync(SectionType.Library, ShowLibrarySection);
 					OnPropertyChanged(nameof(ShowLibrarySection));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					break;
 				case nameof(UserSettingsService.GeneralSettingsService.ShowCloudDrivesSection):
 					await UpdateSectionVisibilityAsync(SectionType.CloudDrives, ShowCloudDrivesSection);
 					OnPropertyChanged(nameof(ShowCloudDrivesSection));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					break;
 				case nameof(UserSettingsService.GeneralSettingsService.ShowDrivesSection):
 					await UpdateSectionVisibilityAsync(SectionType.Drives, ShowDrivesSection);
 					OnPropertyChanged(nameof(ShowDrivesSection));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					break;
 				case nameof(UserSettingsService.GeneralSettingsService.ShowNetworkSection):
 					await UpdateSectionVisibilityAsync(SectionType.Network, ShowNetworkSection);
 					OnPropertyChanged(nameof(ShowNetworkSection));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					break;
 				case nameof(UserSettingsService.GeneralSettingsService.ShowWslSection):
 					await UpdateSectionVisibilityAsync(SectionType.WSL, ShowWslSection);
 					OnPropertyChanged(nameof(ShowWslSection));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					break;
 				case nameof(UserSettingsService.GeneralSettingsService.ShowFileTagsSection):
 					await UpdateSectionVisibilityAsync(SectionType.FileTag, ShowFileTagsSection);
 					OnPropertyChanged(nameof(ShowFileTagsSection));
+					OnPropertyChanged(nameof(AreSectionsHidden));
 					break;
 			}
 		}

src/Files.App/Views/MainPage.xaml

@@ -261,6 +261,12 @@
 
 			<controls:SidebarView.Footer>
 				<StackPanel Padding="4" Spacing="4">
+					<InfoBar
+						Title="{helpers:ResourceString Name=SectionsHidden}"
+						IsClosable="False"
+						IsOpen="{x:Bind SidebarAdaptiveViewModel.AreSectionsHidden, Mode=OneWay}"
+						Message="{helpers:ResourceString Name=SectionsHiddenMessage}" />
+
 					<Border
 						Height="1"
 						HorizontalAlignment="Stretch"