Use spaces to match Ooui

Ooui.Forms/Ooui.Forms.csproj

@@ -4,6 +4,13 @@
     <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType></DebugType>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Xamarin.Forms" Version="2.4.0.38779" />
   </ItemGroup>

Ooui.Forms/Renderers/ViewRenderer.cs

@@ -103,7 +103,7 @@ namespace Ooui.Forms.Renderers
 			if (Element == null || Control == null)
 				return;
 
-			var uiControl = Control as Ooui.Element;
+			var uiControl = Control as Ooui.FormControl;
 			if (uiControl == null)
 				return;
 			uiControl.IsDisabled = !Element.IsEnabled;

Ooui.Forms/ResourcesProvider.cs

@@ -19,8 +19,9 @@ namespace Ooui.Forms
 		{
 			readonly ConcurrentDictionary<string, object> values =
 				new ConcurrentDictionary<string, object> ();
-
+#pragma warning disable 67
 			public event EventHandler<ResourcesChangedEventArgs> ValuesChanged;
+#pragma warning restore 67
 
 			public bool TryGetValue (string key, out object value)
 			{

Ooui.Forms/VisualElementTracker.cs

@@ -144,10 +144,11 @@ namespace Ooui.Forms
                 float newY = visualParent == null ? y : Math.Max (0, (float)(visualParent.Height - y - view.Height));
                 var target = new Rectangle (x, newY, width, height);
 
+                uiview.Style.Position = "absolute";
                 uiview.Style.Left = x;
                 uiview.Style.Top = newY;
-				uiview.Style.Width = width;
-				uiview.Style.Height = height;
+                uiview.Style.Right = x + width;
+                uiview.Style.Bottom = newY + height;
             }
             else if (width <= 0 || height <= 0) {
                 return;

Ooui.sln

@@ -79,6 +79,7 @@ Global
 		$1.FileWidth = 128
 		$1.NoTabsAfterNonTabs = True
 		$1.scope = text/x-csharp
+		$1.TabsToSpaces = True
 		$0.CSharpFormattingPolicy = $2
 		$2.scope = text/x-csharp
 		$2.NewLinesForBracesInProperties = False

Ooui/Element.cs

@@ -25,12 +25,6 @@ namespace Ooui
             set => SetProperty (ref hidden, value, "hidden");
         }
 
-		bool disabled = false;
-		public bool IsDisabled {
-			get => disabled;
-			set => SetProperty (ref disabled, value, "disabled");
-		}
-
         public event TargetEventHandler Clicked {
             add => AddEventListener ("click", value);
             remove => RemoveEventListener ("click", value);

Ooui/Style.cs

@@ -272,6 +272,11 @@ namespace Ooui
             }
         }
 
+        public Value Position {
+            get => this["position"];
+            set => this["position"] = value;
+        }
+
         public Value Right {
             get => this["right"];
             set => this["right"] = value;
@@ -307,8 +312,7 @@ namespace Ooui
             set => this["width"] = value;
         }
 
-        public Value this [string propertyName]
-        {
+        public Value this[string propertyName] {
             get {
                 lock (properties) {
                     Value p;