[Core/Win] CreateVariant

6 files changed, 198 insertions, 8 deletions

diff --git a/Xamarin.PropertyEditing/Properties/Resources.Designer.cs b/Xamarin.PropertyEditing/Properties/Resources.Designer.cs
index eb2c7f1..277ee1d 100644
--- a/Xamarin.PropertyEditing/Properties/Resources.Designer.cs
+++ b/Xamarin.PropertyEditing/Properties/Resources.Designer.cs
@@ -47,6 +47,9 @@ namespace Xamarin.PropertyEditing.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Alpha.
+        /// </summary>
         public static string Alpha {
             get {
                 return ResourceManager.GetString("Alpha", resourceCulture);
@@ -59,6 +62,24 @@ namespace Xamarin.PropertyEditing.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Introduce variation based on:.
+        /// </summary>
+        public static string AddVariationHelpText {
+            get {
+                return ResourceManager.GetString("AddVariationHelpText", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Add a Variation.
+        /// </summary>
+        public static string AddVariationTitle {
+            get {
+                return ResourceManager.GetString("AddVariationTitle", resourceCulture);
+            }
+        }
+        
         public static string Black {
             get {
                 return ResourceManager.GetString("Black", resourceCulture);
@@ -71,6 +92,24 @@ namespace Xamarin.PropertyEditing.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Any.
+        /// </summary>
+        public static string Any {
+            get {
+                return ResourceManager.GetString("Any", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Application.
+        /// </summary>
+        public static string Application {
+            get {
+                return ResourceManager.GetString("Application", resourceCulture);
+            }
+        }
+
         public static string Blue {
             get {
                 return ResourceManager.GetString("Blue", resourceCulture);
@@ -707,12 +746,6 @@ namespace Xamarin.PropertyEditing.Properties {
             }
         }
         
-        public static string Application {
-            get {
-                return ResourceManager.GetString("Application", resourceCulture);
-            }
-        }
-        
         public static string ApplyToAll {
             get {
                 return ResourceManager.GetString("ApplyToAll", resourceCulture);
diff --git a/Xamarin.PropertyEditing/Properties/Resources.resx b/Xamarin.PropertyEditing/Properties/Resources.resx
index 081dc7e..72000a5 100644
--- a/Xamarin.PropertyEditing/Properties/Resources.resx
+++ b/Xamarin.PropertyEditing/Properties/Resources.resx
@@ -554,4 +554,13 @@
   <data name="Shared" xml:space="preserve">
     <value>Shared</value>
   </data>
-</root>
\ No newline at end of file
+  <data name="AddVariationHelpText" xml:space="preserve">
+    <value>Introduce variation based on:</value>
+  </data>
+  <data name="AddVariationTitle" xml:space="preserve">
+    <value>Add a Variation</value>
+  </data>
+  <data name="Any" xml:space="preserve">
+    <value>Any</value>
+  </data>
+</root>
diff --git a/Xamarin.PropertyEditing/PropertyVariationSet.cs b/Xamarin.PropertyEditing/PropertyVariationSet.cs
index 2aa459d..4e6bfa0 100644
--- a/Xamarin.PropertyEditing/PropertyVariationSet.cs
+++ b/Xamarin.PropertyEditing/PropertyVariationSet.cs
@@ -7,6 +7,15 @@ namespace Xamarin.PropertyEditing
 	public class PropertyVariationSet
 		: IList<PropertyVariation>
 	{
+		public PropertyVariationSet (params PropertyVariation[] variations)
+		{
+			if (variations == null)
+				throw new ArgumentNullException (nameof(variations));
+
+			for (int i = 0; i < variations.Length; i++)
+				Add (variations[i]);
+		}
+
 		public int Count => this.variations.Count;
 		bool ICollection<PropertyVariation>.IsReadOnly => false;
 
diff --git a/Xamarin.PropertyEditing/ViewModels/CreateVariantEventArgs.cs b/Xamarin.PropertyEditing/ViewModels/CreateVariantEventArgs.cs
new file mode 100644
index 0000000..3506a4a
--- /dev/null
+++ b/Xamarin.PropertyEditing/ViewModels/CreateVariantEventArgs.cs
@@ -0,0 +1,14 @@
+using System;
+
+namespace Xamarin.PropertyEditing.ViewModels
+{
+	internal class CreateVariantEventArgs
+		:  EventArgs
+	{
+		public PropertyVariationSet Variant
+		{
+			get;
+			set;
+		}
+	}
+}
\ No newline at end of file
diff --git a/Xamarin.PropertyEditing/ViewModels/CreateVariantViewModel.cs b/Xamarin.PropertyEditing/ViewModels/CreateVariantViewModel.cs
new file mode 100644
index 0000000..53949c7
--- /dev/null
+++ b/Xamarin.PropertyEditing/ViewModels/CreateVariantViewModel.cs
@@ -0,0 +1,123 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Windows.Input;
+using Xamarin.PropertyEditing.Properties;
+
+namespace Xamarin.PropertyEditing.ViewModels
+{
+	internal class VariationViewModel
+		: NotifyingObject
+	{
+		public VariationViewModel (string category, IEnumerable<PropertyVariation> variations)
+		{
+			if (category == null)
+				throw new ArgumentNullException (nameof(category));
+			if (variations == null)
+				throw new ArgumentNullException (nameof (variations));
+
+			Name = category;
+			var vs = variations.ToList ();
+			vs.Insert (0, new PropertyVariation (category, Resources.Any));
+			Variations = vs;
+
+			this.selectedVariation = vs[0];
+		}
+
+		public string Name
+		{
+			get;
+		}
+
+		public IReadOnlyList<PropertyVariation> Variations
+		{
+			get;
+		}
+
+		public bool IsAnySelected => SelectedVariation == Variations[0];
+
+		public PropertyVariation SelectedVariation
+		{
+			get { return this.selectedVariation; }
+			set
+			{
+				if (this.selectedVariation == value)
+					return;
+
+				this.selectedVariation = value;
+				OnPropertyChanged();
+				OnPropertyChanged (nameof(IsAnySelected));
+			}
+		}
+
+		private PropertyVariation selectedVariation;
+	}
+
+	internal class CreateVariantViewModel
+		: NotifyingObject
+	{
+		public CreateVariantViewModel (IPropertyInfo property)
+		{
+			if (property == null)
+				throw new ArgumentNullException (nameof (property));
+
+			this.property = property;
+			VariationCategories = property.Variations
+				.GroupBy (v => v.Category)
+				.Select (g => new VariationViewModel (g.Key, g))
+				.ToList();
+
+			foreach (var vvm in VariationCategories) {
+				vvm.PropertyChanged += OnCategoryPropertyChanged;
+			}
+
+			CreateVariantCommand = new RelayCommand (OnCreateVariant, CanCreateVariant);
+		}
+
+		public IReadOnlyList<VariationViewModel> VariationCategories
+		{
+			get;
+		}
+
+		public ICommand CreateVariantCommand
+		{
+			get;
+		}
+
+		public PropertyVariationSet Variant
+		{
+			get { return this.variant; }
+			private set
+			{
+				if (this.variant == value)
+					return;
+
+				this.variant = value;
+				OnPropertyChanged();
+			}
+		}
+
+		private readonly IPropertyInfo property;
+		private PropertyVariationSet variant;
+
+		private void OnCategoryPropertyChanged (object sender, PropertyChangedEventArgs e)
+		{
+			if (e.PropertyName == nameof (VariationViewModel.SelectedVariation))
+				((RelayCommand)CreateVariantCommand).ChangeCanExecute ();
+		}
+
+		private void OnCreateVariant ()
+		{
+			Variant = new PropertyVariationSet (VariationCategories
+				.Where (vm => !vm.IsAnySelected)
+				.Select (vm => vm.SelectedVariation)
+				.ToArray ());
+		}
+
+		private bool CanCreateVariant ()
+		{
+			return !VariationCategories.All (vm => vm.IsAnySelected);
+		}
+	}
+}
diff --git a/Xamarin.PropertyEditing/Xamarin.PropertyEditing.csproj b/Xamarin.PropertyEditing/Xamarin.PropertyEditing.csproj
index 41b2f98..d17e0b7 100644
--- a/Xamarin.PropertyEditing/Xamarin.PropertyEditing.csproj
+++ b/Xamarin.PropertyEditing/Xamarin.PropertyEditing.csproj
@@ -129,6 +129,7 @@
     <Compile Include="ViewModels\CreateBindingViewModel.cs" />
     <Compile Include="ViewModels\CreateResourceRequestedEventArgs.cs" />
     <Compile Include="ViewModels\CreateResourceViewModel.cs" />
+    <Compile Include="ViewModels\CreateVariantViewModel.cs" />
     <Compile Include="ViewModels\MaterialColorScale.cs" />
     <Compile Include="ViewModels\MaterialDesignColorViewModel.cs" />
     <Compile Include="ViewModels\CombinablePropertyViewModel.cs" />
@@ -168,6 +169,7 @@
     <Compile Include="ViewModels\RatioViewModel.cs" />
     <Compile Include="Drawing\CommonRatio.cs" />
     <Compile Include="IReadOnlyOrderedDictionary.cs" />
+    <Compile Include="ViewModels\CreateVariantEventArgs.cs" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Themes\BaseThemeManager.cs" />
@@ -184,4 +186,4 @@
     </EmbeddedResource>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-</Project>
\ No newline at end of file
+</Project>