Merge pull request #5 from 4lexKislitsyn/master

Added options to provider

Notepad.Extensions.Logging/IWindowFinder.cs

@@ -2,6 +2,6 @@
 {
     interface IWindowFinder
     {
-        WindowInfo FindNotepadWindow();
+        WindowInfo FindNotepadWindow(string windowName);
     }
 }

Notepad.Extensions.Logging/LoggingBuilderExtensions.cs

@@ -1,4 +1,9 @@
-using Notepad.Extensions.Logging;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using Microsoft.Extensions.Logging.Configuration;
+using Microsoft.Extensions.Options;
+using Notepad.Extensions.Logging;
+using System;
 
 namespace Microsoft.Extensions.Logging
 {
@@ -6,7 +11,21 @@ namespace Microsoft.Extensions.Logging
     {
         public static ILoggingBuilder AddNotepad(this ILoggingBuilder builder)
         {
-            builder.AddProvider(NotepadLoggerProvider.Instance);
+            builder.AddConfiguration();
+
+            builder.Services.TryAddEnumerable(ServiceDescriptor.Singleton<ILoggerProvider, NotepadLoggerProvider>());
+            LoggerProviderOptions.RegisterProviderOptions<NotepadLoggerOptions, NotepadLoggerProvider>(builder.Services);
+            return builder;
+        }
+
+        public static ILoggingBuilder AddNotepad(this ILoggingBuilder builder, Action<NotepadLoggerOptions> configure)
+        {
+            if (configure == null)
+            {
+                throw new ArgumentNullException(nameof(configure));
+            }
+            AddNotepad(builder);
+            builder.Services.Configure(configure);
             return builder;
         }
     }

Notepad.Extensions.Logging/Notepad.Extensions.Logging.csproj

@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Configuration" Version="3.1.4" />
     <PackageReference Include="Microsoft.Extensions.ObjectPool" Version="3.1.4" />
   </ItemGroup>
 

Notepad.Extensions.Logging/NotepadLogger.cs

@@ -11,16 +11,18 @@ namespace Notepad.Extensions.Logging
 {
     class NotepadLogger : ILogger
     {
-        public NotepadLogger(ObjectPool<StringBuilder> stringBuilderPool, IWindowFinder windowFinder, string categoryName)
+        public NotepadLogger(ObjectPool<StringBuilder> stringBuilderPool, IWindowFinder windowFinder, string categoryName, string windowName)
         {
             this.stringBuilderPool = stringBuilderPool ?? throw new ArgumentNullException(nameof(stringBuilderPool));
             this.windowFinder = windowFinder ?? throw new ArgumentNullException(nameof(windowFinder));
             this.categoryName = categoryName;
+            this.windowName = windowName;
         }
 
         readonly ObjectPool<StringBuilder> stringBuilderPool;
         readonly IWindowFinder windowFinder;
         readonly string categoryName;
+        readonly string windowName;
 
         public IDisposable BeginScope<TState>(TState state) => NullDisposable.Instance;
 
@@ -90,20 +92,17 @@ namespace Notepad.Extensions.Logging
 
         void WriteToNotepad(string message)
         {
-            var info = windowFinder.FindNotepadWindow();
+            var info = windowFinder.FindNotepadWindow(windowName);
             switch (info.Kind)
             {
                 case WindowKind.Notepad:
                     SendMessage(info.Handle, EM_REPLACESEL, (IntPtr)1, message);
                     break;
-
                 case WindowKind.NotepadPlusPlus:
-                {
                     WriteToNotepadPlusPlus(info.Handle, message);
                     break;
             }
         }
-        }
 
         unsafe static void WriteToNotepadPlusPlus(IntPtr hwnd, string message)
         {

Notepad.Extensions.Logging/NotepadLoggerOptions.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Microsoft.Extensions.Logging
+{
+    public class NotepadLoggerOptions
+    {
+        /// <summary>
+        /// Name of window to search.
+        /// </summary>
+        public string WindowName { get; set; }
+    }
+}

Notepad.Extensions.Logging/NotepadLoggerProvider.cs

@@ -1,9 +1,12 @@
-using System.Text;
+using System;
+using System.Text;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.ObjectPool;
+using Microsoft.Extensions.Options;
 
 namespace Notepad.Extensions.Logging
 {
+    [ProviderAlias("Notepad")]
     class NotepadLoggerProvider : ILoggerProvider
     {
         NotepadLoggerProvider()
@@ -13,15 +16,32 @@ namespace Notepad.Extensions.Logging
             windowFinder = new WindowFinder();
         }
 
-        public static ILoggerProvider Instance { get; } = new NotepadLoggerProvider();
+        public NotepadLoggerProvider(IOptionsMonitor<NotepadLoggerOptions> options) : this()
+        {
+            // Filter would be applied on LoggerFactory level
+            optionsReloadToken = options.OnChange(ReloadLoggerOptions);
+            ReloadLoggerOptions(options.CurrentValue);
+        }
 
+        public NotepadLoggerProvider(NotepadLoggerOptions options) : this()
+        {
+            this.options = options;
+        }
         readonly ObjectPool<StringBuilder> stringBuilderPool;
         readonly IWindowFinder windowFinder;
+        readonly IDisposable optionsReloadToken;
+        NotepadLoggerOptions options;
         
-        public ILogger CreateLogger(string categoryName) => new NotepadLogger(stringBuilderPool, windowFinder, categoryName);
+        public ILogger CreateLogger(string categoryName) => new NotepadLogger(stringBuilderPool, windowFinder, categoryName, options.WindowName);
 
         public void Dispose()
         {
+            optionsReloadToken?.Dispose();
+        }
+
+        void ReloadLoggerOptions(NotepadLoggerOptions options)
+        {
+            this.options = options;
         }
     }
 }

Notepad.Extensions.Logging/WindowEnumerationState.cs

@@ -16,11 +16,13 @@ namespace Notepad.Extensions.Logging
 
         public IntPtr Handle { get; private set; }
         public WindowKind WindowKind { get; private set; }
+        public string WindowName { get; internal set; }
 
         public void Reset()
         {
             Handle = default;
             WindowKind = default;
+            WindowName = default;
             sb.Clear();
         }
 
@@ -51,22 +53,38 @@ namespace Notepad.Extensions.Logging
 
         bool IsKnownNotepadWindow(string titleText)
         {
-            switch (titleText)
+            if (!string.IsNullOrWhiteSpace(WindowName))
             {
-                case "Untitled - Notepad":
-                    WindowKind = WindowKind.Notepad;
-                    Handle = NativeMethods.FindWindowEx(Handle, IntPtr.Zero, "EDIT", null);
-                    return true;
+                if (WindowName.Equals(titleText, StringComparison.Ordinal))
+                {
+                    WindowKind = titleText.EndsWith(" - Notepad++") ? WindowKind.NotepadPlusPlus : WindowKind.Notepad;
                 }
-
-            if (notepadPlusPlusRegex.IsMatch(titleText))
+            }
+            else if (titleText.Equals("Untitled - Notepad", StringComparison.Ordinal))
+            {
+                WindowKind = WindowKind.Notepad;
+            }
+            else if (notepadPlusPlusRegex.IsMatch(titleText))
             {
                 WindowKind = WindowKind.NotepadPlusPlus;
-                Handle = NativeMethods.FindWindowEx(Handle, IntPtr.Zero, "Scintilla", null);
-                return true;
             }
 
-            return false;
+            Handle = FindInnerWindow(WindowKind);
+
+            return WindowKind != default;
+        }
+
+        IntPtr FindInnerWindow(WindowKind windowKind)
+        {
+            switch (windowKind)
+            {
+                case WindowKind.Notepad:
+                    return NativeMethods.FindWindowEx(Handle, IntPtr.Zero, "EDIT", null);
+                case WindowKind.NotepadPlusPlus:
+                    return NativeMethods.FindWindowEx(Handle, IntPtr.Zero, "Scintilla", null);
+                default:
+                    return Handle;
+            }
         }
     }
 }

Notepad.Extensions.Logging/WindowFinder.cs

@@ -12,11 +12,12 @@ namespace Notepad.Extensions.Logging
 
         readonly ObjectPool<WindowEnumerationState> statePool;
 
-        public WindowInfo FindNotepadWindow()
+        public WindowInfo FindNotepadWindow(string windowName)
         {
             var stateObject = statePool.Get();
             try
             {
+                stateObject.WindowName = windowName;
                 NativeMethods.EnumWindows(enumWindowsDelegate, stateObject);
                 return new WindowInfo(stateObject.WindowKind, stateObject.Handle);
             }