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src/Artemis.UI.Shared/Plugins/LayerBrushes/BrushConfigurationViewModel.cs

@@ -1,12 +1,13 @@
-using Artemis.Core.LayerBrushes;
-using Stylet;
+using System;
+using System.Threading.Tasks;
+using Artemis.Core.LayerBrushes;
 
 namespace Artemis.UI.Shared.LayerBrushes
 {
     /// <summary>
     ///     Represents a view model for a brush configuration window
     /// </summary>
-    public abstract class BrushConfigurationViewModel : Screen
+    public abstract class BrushConfigurationViewModel : ActivatableViewModelBase
     {
         /// <summary>
         ///     Creates a new instance of the <see cref="BrushConfigurationViewModel" /> class
@@ -17,19 +18,40 @@ namespace Artemis.UI.Shared.LayerBrushes
             LayerBrush = layerBrush;
         }
 
-        /// <summary>
-        ///     Creates a new instance of the <see cref="BrushConfigurationViewModel" /> class with a validator
-        /// </summary>
-        /// <param name="layerBrush"></param>
-        /// <param name="validator"></param>
-        protected BrushConfigurationViewModel(BaseLayerBrush layerBrush, IModelValidator validator) : base(validator)
-        {
-            LayerBrush = layerBrush;
-        }
-
         /// <summary>
         ///     Gets the layer brush this view model is associated with
         /// </summary>
         public BaseLayerBrush LayerBrush { get; }
+
+        /// <summary>
+        ///     Closes the dialog
+        /// </summary>
+        public void RequestClose()
+        {
+            CloseRequested?.Invoke(this, EventArgs.Empty);
+        }
+
+        /// <summary>
+        ///     Called when the window wants to close, returning <see langword="false" /> will cause the window to stay open.
+        /// </summary>
+        /// <returns><see langword="true" /> if the window may close; otherwise <see langword="false" />.</returns>
+        public virtual bool CanClose()
+        {
+            return true;
+        }
+
+        /// <summary>
+        ///     Called when the window wants to close, returning <see langword="false" /> will cause the window to stay open.
+        /// </summary>
+        /// <returns>A task <see langword="true" /> if the window may close; otherwise <see langword="false" />.</returns>
+        public virtual Task<bool> CanCloseAsync()
+        {
+            return Task.FromResult(true);
+        }
+
+        /// <summary>
+        ///     Occurs when a close was requested
+        /// </summary>
+        public event EventHandler? CloseRequested;
     }
 }

src/Artemis.UI.Shared/Plugins/LayerBrushes/LayerBrushConfigurationDialog.cs

@@ -38,7 +38,7 @@ namespace Artemis.UI.Shared.LayerBrushes
         public int DialogHeight { get; set; } = 800;
 
         /// <summary>
-        ///     The type of view model the tab contains
+        ///     The type of view model the dialog contains
         /// </summary>
         public abstract Type Type { get; }
     }

src/Artemis.UI.Shared/Plugins/LayerEffects/EffectConfigurationViewModel.cs

@@ -1,35 +1,57 @@
-using Artemis.Core.LayerEffects;
-using Stylet;
+using System;
+using System.Threading.Tasks;
+using Artemis.Core.LayerEffects;
+using Avalonia.Threading;
 
-namespace Artemis.UI.Shared.LayerEffects
+namespace Artemis.UI.Shared.LayerEffects;
+
+/// <summary>
+///     Represents a view model for an effect configuration window
+/// </summary>
+public abstract class EffectConfigurationViewModel : ActivatableViewModelBase
 {
     /// <summary>
-    ///     Represents a view model for an effect configuration window
+    ///     Creates a new instance of the <see cref="EffectConfigurationViewModel" /> class
     /// </summary>
-    public abstract class EffectConfigurationViewModel : Screen
+    /// <param name="layerEffect"></param>
+    protected EffectConfigurationViewModel(BaseLayerEffect layerEffect)
     {
-        /// <summary>
-        ///     Creates a new instance of the <see cref="EffectConfigurationViewModel" /> class
-        /// </summary>
-        /// <param name="layerEffect"></param>
-        protected EffectConfigurationViewModel(BaseLayerEffect layerEffect)
-        {
-            LayerEffect = layerEffect;
-        }
-
-        /// <summary>
-        ///     Creates a new instance of the <see cref="EffectConfigurationViewModel" /> class with a validator
-        /// </summary>
-        /// <param name="layerEffect"></param>
-        /// <param name="validator"></param>
-        protected EffectConfigurationViewModel(BaseLayerEffect layerEffect, IModelValidator validator) : base(validator)
-        {
-            LayerEffect = layerEffect;
-        }
-
-        /// <summary>
-        ///     Gets the layer effect this view model is associated with
-        /// </summary>
-        public BaseLayerEffect LayerEffect { get; }
+        LayerEffect = layerEffect;
     }
+
+    /// <summary>
+    ///     Gets the layer effect this view model is associated with
+    /// </summary>
+    public BaseLayerEffect LayerEffect { get; }
+
+    /// <summary>
+    ///     Closes the dialog
+    /// </summary>
+    public void RequestClose()
+    {
+        CloseRequested?.Invoke(this, EventArgs.Empty);
+    }
+
+    /// <summary>
+    ///     Called when the window wants to close, returning <see langword="false" /> will cause the window to stay open.
+    /// </summary>
+    /// <returns><see langword="true" /> if the window may close; otherwise <see langword="false" />.</returns>
+    public virtual bool CanClose()
+    {
+        return true;
+    }
+
+    /// <summary>
+    ///     Called when the window wants to close, returning <see langword="false" /> will cause the window to stay open.
+    /// </summary>
+    /// <returns>A task <see langword="true" /> if the window may close; otherwise <see langword="false" />.</returns>
+    public virtual Task<bool> CanCloseAsync()
+    {
+        return Task.FromResult(true);
+    }
+
+    /// <summary>
+    ///     Occurs when a close was requested
+    /// </summary>
+    public event EventHandler? CloseRequested;
 }

src/Artemis.UI.Shared/Plugins/LayerEffects/LayerEffectConfigurationDialog.cs

@@ -39,7 +39,7 @@ namespace Artemis.UI.Shared.LayerEffects
         public int DialogHeight { get; set; } = 800;
 
         /// <summary>
-        ///     The type of view model the tab contains
+        ///     The type of view model the dialog contains
         /// </summary>
         public abstract Type Type { get; }
     }

src/Artemis.UI.Shared/Plugins/Modules/ModuleViewModel.cs

@@ -1,27 +0,0 @@
-using Artemis.Core.Modules;
-using Stylet;
-
-namespace Artemis.UI.Shared.Modules
-{
-    /// <summary>
-    ///     The base class for any view model that belongs to a module
-    /// </summary>
-    public abstract class ModuleViewModel : Screen, IModuleViewModel
-    {
-        /// <summary>
-        ///     The base class for any view model that belongs to a module
-        /// </summary>
-        /// <param name="module">The module this view model belongs to</param>
-        /// <param name="displayName">The name of the tab that's shown on the modules UI page</param>
-        protected ModuleViewModel(Module module, string displayName)
-        {
-            Module = module;
-            DisplayName = displayName.ToUpper();
-        }
-
-        /// <summary>
-        ///     Gets the module this view model belongs to
-        /// </summary>
-        public Module Module { get; }
-    }
-}

src/Artemis.UI.Shared/Plugins/PluginConfigurationDialog.cs

@@ -15,9 +15,7 @@ namespace Artemis.UI.Shared
     /// </summary>
     public abstract class PluginConfigurationDialog : IPluginConfigurationDialog
     {
-        /// <summary>
-        ///     The type of view model the tab contains
-        /// </summary>
+        /// <inheritdoc />
         public abstract Type Type { get; }
     }
 }

src/Artemis.UI.Shared/Plugins/PluginConfigurationViewModel.cs

@@ -1,12 +1,12 @@
-using Artemis.Core;
-using Stylet;
+using System;
+using Artemis.Core;
 
 namespace Artemis.UI.Shared
 {
     /// <summary>
     ///     Represents a view model for a plugin configuration window
     /// </summary>
-    public abstract class PluginConfigurationViewModel : Screen, IPluginConfigurationViewModel
+    public abstract class PluginConfigurationViewModel : ViewModelValidationBase, IPluginConfigurationViewModel
     {
         /// <summary>
         ///     Creates a new instance of the <see cref="PluginConfigurationViewModel" /> class
@@ -17,19 +17,30 @@ namespace Artemis.UI.Shared
             Plugin = plugin;
         }
 
-        /// <summary>
-        ///     Creates a new instance of the <see cref="PluginConfigurationViewModel" /> class with a validator
-        /// </summary>
-        /// <param name="plugin"></param>
-        /// <param name="validator"></param>
-        protected PluginConfigurationViewModel(Plugin plugin, IModelValidator validator) : base(validator)
-        {
-            Plugin = plugin;
-        }
-
         /// <summary>
         ///     Gets the plugin this configuration view model is associated with
         /// </summary>
         public Plugin Plugin { get; }
+
+        /// <summary>
+        ///     Closes the window hosting the view model
+        /// </summary>
+        public void Close()
+        {
+            CloseRequested?.Invoke(this, EventArgs.Empty);
+            OnCloseRequested();
+        }
+
+        /// <summary>
+        ///     Called when the the window hosting the view model should close
+        /// </summary>
+        public virtual void OnCloseRequested()
+        {
+        }
+
+        /// <summary>
+        ///     Occurs when the the window hosting the view model should close
+        /// </summary>
+        public event EventHandler? CloseRequested;
     }
 }

src/Artemis.UI.Shared/Plugins/ScriptingProviders/ScriptEditorViewModel.cs

@@ -1,12 +1,12 @@
 using Artemis.Core.ScriptingProviders;
-using Stylet;
+using ReactiveUI;
 
 namespace Artemis.UI.Shared.ScriptingProviders
 {
     /// <summary>
     ///     Represents a Stylet view model containing a script editor
     /// </summary>
-    public class ScriptEditorViewModel : Screen, IScriptEditorViewModel
+    public class ScriptEditorViewModel : ActivatableViewModelBase, IScriptEditorViewModel
     {
         private Script? _script;
 
@@ -42,7 +42,7 @@ namespace Artemis.UI.Shared.ScriptingProviders
         public Script? Script
         {
             get => _script;
-            internal set => SetAndNotify(ref _script, value);
+            internal set => RaiseAndSetIfChanged(ref _script, value);
         }
 
         /// <inheritdoc />