Feature: Added an action to collapse/expand the sidebar

src/Files.App/Actions/Show/ToggleSidebarAction.cs

@@ -0,0 +1,43 @@
+// Copyright (c) 2024 Files Community
+// Licensed under the MIT License. See the LICENSE.
+
+namespace Files.App.Actions
+{
+	internal sealed class ToggleSidebarAction : ObservableObject, IToggleAction
+	{
+		private readonly ISidebarViewModel SidebarViewModel = Ioc.Default.GetRequiredService<SidebarViewModel>();
+
+		public string Label
+			=> "ToggleSidebar".GetLocalizedResource();
+
+		public string Description
+			=> "ToggleSidebarDescription".GetLocalizedResource();
+
+		public HotKey HotKey
+			=> new(Keys.S, KeyModifiers.CtrlAlt);
+
+		public bool IsOn =>
+			SidebarViewModel.SidebarDisplayMode is SidebarDisplayMode.Expanded
+				? true
+				: false;
+
+		public ToggleSidebarAction()
+		{
+			SidebarViewModel.PropertyChanged += ViewModel_PropertyChanged;
+		}
+
+		public Task ExecuteAsync(object? parameter = null)
+		{
+			SidebarViewModel.SidebarDisplayMode = IsOn
+				? SidebarDisplayMode.Expanded
+				: SidebarDisplayMode.Compact;
+			return Task.CompletedTask;
+		}
+
+		private void ViewModel_PropertyChanged(object? sender, PropertyChangedEventArgs e)
+		{
+			if (e.PropertyName is nameof(SidebarViewModel.SidebarDisplayMode))
+				OnPropertyChanged(nameof(IsOn));
+		}
+	}
+}

src/Files.App/Data/Commands/Manager/CommandCodes.cs

@@ -26,6 +26,7 @@ public enum CommandCodes
 		ToggleDetailsPane,
 		ToggleInfoPane,
 		ToggleToolbar,
+		ToggleSidebar,
 
 		// File System
 		CopyItem,

src/Files.App/Data/Commands/Manager/CommandManager.cs

@@ -57,6 +57,7 @@ public IRichCommand this[HotKey hotKey]
 		public IRichCommand ToggleDetailsPane => commands[CommandCodes.ToggleDetailsPane];
 		public IRichCommand ToggleInfoPane => commands[CommandCodes.ToggleInfoPane];
 		public IRichCommand ToggleToolbar => commands[CommandCodes.ToggleToolbar];
+		public IRichCommand ToggleSidebar => commands[CommandCodes.ToggleSidebar];
 		public IRichCommand SelectAll => commands[CommandCodes.SelectAll];
 		public IRichCommand InvertSelection => commands[CommandCodes.InvertSelection];
 		public IRichCommand ClearSelection => commands[CommandCodes.ClearSelection];
@@ -253,6 +254,7 @@ public IEnumerator<IRichCommand> GetEnumerator() =>
 			[CommandCodes.ToggleDetailsPane] = new ToggleDetailsPaneAction(),
 			[CommandCodes.ToggleInfoPane] = new ToggleInfoPaneAction(),
 			[CommandCodes.ToggleToolbar] = new ToggleToolbarAction(),
+			[CommandCodes.ToggleSidebar] = new ToggleSidebarAction(),
 			[CommandCodes.SelectAll] = new SelectAllAction(),
 			[CommandCodes.InvertSelection] = new InvertSelectionAction(),
 			[CommandCodes.ClearSelection] = new ClearSelectionAction(),

src/Files.App/Data/Commands/Manager/ICommandManager.cs

@@ -31,6 +31,7 @@ public interface ICommandManager : IEnumerable<IRichCommand>
 		IRichCommand ToggleDetailsPane { get; }
 		IRichCommand ToggleInfoPane { get; }
 		IRichCommand ToggleToolbar { get; }
+		IRichCommand ToggleSidebar { get; }
 
 		IRichCommand CopyItem { get; }
 		IRichCommand CopyItemPath { get; }