Clean up MiscSettings and DisplaySettings

ILSpy/App.xaml.cs

@@ -58,9 +58,8 @@ namespace ICSharpCode.ILSpy
 		public App()
 		{
 			var cmdArgs = Environment.GetCommandLineArgs().Skip(1);
-			var allowMultipleInstance = MiscSettingsInstance.Current.LoadMiscSettings().AllowMultipleInstances;
 			App.CommandLineArguments = new CommandLineArguments(cmdArgs);
-			if ((App.CommandLineArguments.SingleInstance ?? true) && (!allowMultipleInstance)) {
+			if ((App.CommandLineArguments.SingleInstance ?? true) && !MiscSettingsPanel.CurrentMiscSettings.AllowMultipleInstances) {
 				cmdArgs = cmdArgs.Select(FullyQualifyPath);
 				string message = string.Join(Environment.NewLine, cmdArgs);
 				if (SendToPreviousInstance("ILSpy:\r\n" + message, !App.CommandLineArguments.NoActivate)) {

ILSpy/ILSpy.csproj

@@ -152,7 +152,6 @@
       <SubType>Code</SubType>
     </Compile>
     <Compile Include="Options\MiscSettings.cs" />
-    <Compile Include="Options\MiscSettingsLoader.cs" />
     <Compile Include="Options\MiscSettingsPanel.xaml.cs">
       <DependentUpon>MiscSettingsPanel.xaml</DependentUpon>
     </Compile>

ILSpy/Options/DisplaySettings.cs

@@ -17,6 +17,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System.ComponentModel;
+using System.Runtime.CompilerServices;
 using System.Windows.Media;
 
 namespace ICSharpCode.ILSpy.Options
@@ -35,12 +36,10 @@ namespace ICSharpCode.ILSpy.Options
 		
 		protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
 		{
-			if (PropertyChanged != null) {
-				PropertyChanged(this, e);
-			}
+			PropertyChanged?.Invoke(this, e);
 		}
 		
-		protected void OnPropertyChanged(string propertyName)
+		protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
 		{
 			OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
 		}
@@ -53,7 +52,7 @@ namespace ICSharpCode.ILSpy.Options
 			set {
 				if (selectedFont != value) {
 					selectedFont = value;
-					OnPropertyChanged("SelectedFont");
+					OnPropertyChanged();
 				}
 			}
 		}
@@ -65,7 +64,7 @@ namespace ICSharpCode.ILSpy.Options
 			set {
 				if (selectedFontSize != value) {
 					selectedFontSize = value;
-					OnPropertyChanged("SelectedFontSize");
+					OnPropertyChanged();
 				}
 			}
 		}
@@ -77,7 +76,7 @@ namespace ICSharpCode.ILSpy.Options
 			set {
 				if (showLineNumbers != value) {
 					showLineNumbers = value;
-					OnPropertyChanged("ShowLineNumbers");
+					OnPropertyChanged();
 				}
 			}
 		}
@@ -90,7 +89,7 @@ namespace ICSharpCode.ILSpy.Options
 			set {
 				if (showMetadataTokens != value) {
 					showMetadataTokens = value;
-					OnPropertyChanged("ShowMetadataTokens");
+					OnPropertyChanged();
 				}
 			}
 		}
@@ -104,18 +103,9 @@ namespace ICSharpCode.ILSpy.Options
 			{
 				if (enableWordWrap != value) {
 					enableWordWrap = value;
-					OnPropertyChanged("EnableWordWrap");
-				}
+					OnPropertyChanged();
 				}
 			}
-
-		public void CopyValues(DisplaySettings s)
-		{
-			this.SelectedFont = s.selectedFont;
-			this.SelectedFontSize = s.selectedFontSize;
-			this.ShowLineNumbers = s.showLineNumbers;
-			this.ShowMetadataTokens = s.showMetadataTokens;
-			this.EnableWordWrap = s.enableWordWrap;
 		}
 	}
 }

ILSpy/Options/DisplaySettingsPanel.xaml.cs

@@ -87,16 +87,16 @@ namespace ICSharpCode.ILSpy.Options
 		
 		static FontFamily[] FontLoader()
 		{
-			return Fonts.SystemFontFamilies
-				.Where(ff => !IsSymbolFont(ff))
-				.OrderBy(ff => ff.Source)
-				.ToArray();
+			return (from ff in Fonts.SystemFontFamilies
+					where !IsSymbolFont(ff)
+					orderby ff.Source
+					select ff).ToArray();
 		}
 		
 		public static DisplaySettings LoadDisplaySettings(ILSpySettings settings)
 		{
 			XElement e = settings["DisplaySettings"];
-			DisplaySettings s = new DisplaySettings();
+			var s = new DisplaySettings();
 			s.SelectedFont = new FontFamily((string)e.Attribute("Font") ?? "Consolas");
 			s.SelectedFontSize = (double?)e.Attribute("FontSize") ?? 10.0 * 4 / 3;
 			s.ShowLineNumbers = (bool?)e.Attribute("ShowLineNumbers") ?? false;
@@ -108,11 +108,9 @@ namespace ICSharpCode.ILSpy.Options
 		
 		public void Save(XElement root)
 		{
-			DisplaySettings s = (DisplaySettings)this.DataContext;
+			var s = (DisplaySettings)this.DataContext;
 			
-			currentDisplaySettings.CopyValues(s);
-			
-			XElement section = new XElement("DisplaySettings");
+			var section = new XElement("DisplaySettings");
 			section.SetAttributeValue("Font", s.SelectedFont.Source);
 			section.SetAttributeValue("FontSize", s.SelectedFontSize);
 			section.SetAttributeValue("ShowLineNumbers", s.ShowLineNumbers);
@@ -124,6 +122,8 @@ namespace ICSharpCode.ILSpy.Options
 				existingElement.ReplaceWith(section);
 			else
 				root.Add(section);
+
+			currentDisplaySettings = null; // invalidate cached settings
 		}
 	}
 	

ILSpy/Options/MiscSettings.cs

@@ -1,26 +1,40 @@
-using System.ComponentModel;
+// Copyright (c) 2017 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
 
 namespace ICSharpCode.ILSpy.Options
 {
 	public class MiscSettings : INotifyPropertyChanged
 	{
-		bool allowMultipleInstances = false;
+		bool allowMultipleInstances;
 
 		/// <summary>
-		/// Decompile anonymous methods/lambdas.
+		/// Allow multiple instances.
 		/// </summary>
 		public bool AllowMultipleInstances
 		{
-			get
-			{
-				return allowMultipleInstances;
-			}
-			set
-			{
-				if (allowMultipleInstances != value)
-				{
+			get { return allowMultipleInstances; }
+			set {
+				if (allowMultipleInstances != value) {
 					allowMultipleInstances = value;
-					OnPropertyChanged("AllowMultipleInstance");
+					OnPropertyChanged();
 				}
 			}
 		}
@@ -34,7 +48,7 @@ namespace ICSharpCode.ILSpy.Options
 			PropertyChanged?.Invoke(this, e);
 		}
 
-		protected void OnPropertyChanged(string propertyName)
+		protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
 		{
 			OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
 		}

ILSpy/Options/MiscSettingsLoader.cs

@@ -1,47 +0,0 @@
-using System.Xml.Linq;
-
-namespace ICSharpCode.ILSpy.Options
-{
-	public interface IMiscSettingsLoader
-	{
-		MiscSettings LoadMiscSettings();
-		MiscSettings LoadMiscSettings(ILSpySettings settings);
-	}
-
-	public class MiscSettingsLoader : IMiscSettingsLoader
-	{
-		private ILSpySettings settings;
-
-		public MiscSettingsLoader()
-		{
-			settings = ILSpySettings.Load();
-		}
-
-		public MiscSettings LoadMiscSettings()
-		{
-			return LoadMiscSettings(settings);
-		}
-
-		public MiscSettings LoadMiscSettings(ILSpySettings settings)
-		{
-			XElement e = settings["MiscSettings"];
-			MiscSettings s = new MiscSettings();
-			s.AllowMultipleInstances = (bool?)e.Attribute("allowMultipleInstance") ?? s.AllowMultipleInstances;
-			return s;
-		}
-	}
-
-	public static class MiscSettingsInstance
-	{
-		private static MiscSettingsLoader current;
-
-		public static MiscSettingsLoader Current
-		{
-			get
-			{
-				current = current ?? new MiscSettingsLoader();
-				return current;
-			}
-		}
-	}
-}

ILSpy/Options/MiscSettingsPanel.xaml.cs

@@ -1,4 +1,22 @@
-using System.Windows.Controls;
+// Copyright (c) 2017 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System.Windows.Controls;
 using System.Xml.Linq;
 
 namespace ICSharpCode.ILSpy.Options
@@ -16,20 +34,39 @@ namespace ICSharpCode.ILSpy.Options
 
 		public void Load(ILSpySettings settings)
 		{
-			this.DataContext = MiscSettingsInstance.Current.LoadMiscSettings(settings);
+			this.DataContext = LoadMiscSettings(settings);
+		}
+
+		static MiscSettings currentMiscSettings;
+
+		public static MiscSettings CurrentMiscSettings {
+			get {
+				return currentMiscSettings ?? (currentMiscSettings = LoadMiscSettings(ILSpySettings.Load()));
+			}
+		}
+
+		public static MiscSettings LoadMiscSettings(ILSpySettings settings)
+		{
+			XElement e = settings["MiscSettings"];
+			var s = new MiscSettings();
+			s.AllowMultipleInstances = (bool?)e.Attribute("AllowMultipleInstances") ?? false;
+			return s;
 		}
 
 		public void Save(XElement root)
 		{
-			MiscSettings s = (MiscSettings)this.DataContext;
-			XElement section = new XElement("MiscSettings");
-			section.SetAttributeValue("allowMultipleInstance", s.AllowMultipleInstances);
+			var s = (MiscSettings)this.DataContext;
+
+			var section = new XElement("MiscSettings");
+			section.SetAttributeValue("AllowMultipleInstances", s.AllowMultipleInstances);
 
 			XElement existingElement = root.Element("MiscSettings");
 			if (existingElement != null)
 				existingElement.ReplaceWith(section);
 			else
 				root.Add(section);
+
+			currentMiscSettings = null; // invalidate cached settings
 		}
 	}
 }