Allow deleting presets in full view

Signed-off-by: Daniel Lo Nigro <git@d.sb>

src/WebCamControl.Core/IPresets.cs

@@ -30,5 +30,10 @@ public interface IPresets
 	/// </summary>
 	/// <param name="index">Preset index to overwrite. If <c>null</c>, a new preset will be saved.</param>
 	public void SaveCurrent(ICamera camera, string name, int? index);
+
+	/// <summary>
+	/// Deletes the preset at the specified index.
+	/// </summary>
+	public void Delete(PresetConfig preset);
 }
 

src/WebCamControl.Core/Presets.cs

@@ -67,4 +67,14 @@ public void SaveCurrent(ICamera camera, string name, int? index)
 		_configManager.Save();
 		OnChange?.Invoke(this, EventArgs.Empty);
 	}
+
+	/// <summary>
+	/// Deletes the preset at the specified index.
+	/// </summary>
+	public void Delete(PresetConfig preset)
+	{
+		PresetConfigs.Remove(preset);
+		_configManager.Save();
+		OnChange?.Invoke(this, EventArgs.Empty);
+	}
 }

src/WebCamControl.Gtk/FullWindow.blp

@@ -43,6 +43,16 @@ Adw.ApplicationWindow full_window {
             }
           };
         }
+        Adw.ViewStackPage {
+          name: "presets";
+          title: _("Presets");
+          child: ListBox _presetsList {
+            styles [
+              "boxed-list",
+              "settings-page",
+            ]
+          };
+        }
       }
     };
   }

src/WebCamControl.Gtk/FullWindow.cs

@@ -1,8 +1,6 @@
 using Adw;
 using Gtk;
 using WebCamControl.Core;
-using WebCamControl.Core.Linux;
-using WebCamControl.Gtk.Extensions;
 using WebCamControl.Gtk.Widgets;
 
 namespace WebCamControl.Gtk;
@@ -13,26 +11,31 @@ namespace WebCamControl.Gtk;
 public class FullWindow : Adw.Window
 {
 	private readonly ICamera _camera;
+	private readonly IPresets _presets;
 
 #pragma warning disable CS0649 // Field is never assigned to, and will always have its default value
 	[Connect] private readonly ListBox _controls = default!;
 	[Connect] private readonly ActionRow _exampleRow = default!;
+	[Connect] private readonly ListBox _presetsList = default!;
 #pragma warning restore CS0649 // Field is never assigned to, and will always have its default value
 
 	public FullWindow(
 		Adw.Application app,
-		ICamera camera
-	) : this(new Builder("FullWindow.ui"), camera)
+		ICamera camera,
+		IPresets presets
+	) : this(new Builder("FullWindow.ui"), camera, presets)
 	{
 		Application = app;
 	}
 
 	private FullWindow(
 		Builder builder,
-		ICamera camera
+		ICamera camera,
+		IPresets presets
 	) : base(builder.GetPointer("full_window"), false)
 	{
 		_camera = camera;
+		_presets = presets;
 		builder.Connect(this);
 		// TODO: Configure proper icon
 
@@ -57,5 +60,19 @@ private void InitializeWidgets()
 		{
 			_controls.Append(control!);
 		}
+
+		InitializePresets();
+		_presets.OnChange += (_, _) => InitializePresets();
+	}
+
+	private void InitializePresets()
+	{
+		_presetsList.RemoveAll();
+		foreach (var preset in _presets.PresetConfigs)
+		{
+			var row = new PresetRow(preset);
+			row.OnDelete += (_, _) => _presets.Delete(preset);
+			_presetsList.Append(row);
+		}
 	}
 }

src/WebCamControl.Gtk/Widgets/PresetRow.cs

@@ -0,0 +1,70 @@
+using Adw;
+using Gtk;
+using WebCamControl.Core.Configuration;
+using MessageDialog = Adw.MessageDialog;
+
+namespace WebCamControl.Gtk.Widgets;
+
+/// <summary>
+/// A row representing a saved preset.
+/// </summary>
+public class PresetRow : ExpanderRow
+{
+	private readonly PresetConfig _preset;
+	public event EventHandler? OnDelete; 
+
+	public PresetRow(PresetConfig preset)
+		: this(Adw.Internal.ExpanderRow.New(), false, preset)
+	{
+
+	}
+	private PresetRow(IntPtr ptr, bool ownedRef, PresetConfig preset)
+		: base(ptr, ownedRef)
+	{
+		_preset = preset;
+		Title = preset.Name;
+
+		if (preset.Tilt != null)
+		{
+			var tilt = ActionRow.New();
+			tilt.Title = $"Tilt: {Math.Round((decimal)preset.Tilt.Value, decimals: 2)}";
+			AddRow(tilt);
+		}
+		if (preset.Pan != null)
+		{
+			var pan = ActionRow.New();
+			pan.Title = $"Pan: {Math.Round((decimal)preset.Pan.Value, decimals: 2)}";
+			AddRow(pan);
+		}
+
+		var deleteButton = Button.New();
+		deleteButton.TooltipText = $"Delete {preset.Name}";
+		deleteButton.IconName = "user-trash-symbolic";
+		deleteButton.CssClasses = ["flat", "image-button"];
+		deleteButton.OnClicked += (_, _) => ConfirmDelete();
+		AddSuffix(deleteButton);
+	}
+
+	private void ConfirmDelete()
+	{
+		const string deleteButtonId = "delete";
+		const string cancelButtonId = "cancel";
+
+		var dialog = new MessageDialog();
+		dialog.SetParent(this);
+		dialog.Body = $"Are you sure you want to delete preset '{_preset.Name}'?";
+		dialog.AddResponse(cancelButtonId, "Cancel");
+		dialog.AddResponse(deleteButtonId, "Delete");
+		dialog.SetResponseAppearance(deleteButtonId, ResponseAppearance.Destructive);
+		dialog.SetDefaultResponse(cancelButtonId);
+		dialog.SetCloseResponse(cancelButtonId);
+		dialog.OnResponse += (_, args) =>
+		{
+			if (args.Response == deleteButtonId)
+			{
+				OnDelete?.Invoke(this, EventArgs.Empty);
+			}
+		};
+		dialog.Present();
+	}
+}