Implement text/html processor

src/Markdowser/GlobalSuppressions.cs

@@ -7,5 +7,4 @@ using System.Diagnostics.CodeAnalysis;
 
 [assembly: SuppressMessage("Minor Code Smell", "S1075:URIs should not be hardcoded", Justification = "<Pending>")]
 [assembly: SuppressMessage("Minor Code Smell", "CS0067:The event 'ChangeThemeCommand.CanExecuteChanged' is never used", Justification = "<Pending>", Scope = "member", Target = "~N:Markdowser.Commands")]
-[assembly: SuppressMessage("Performance", "CA1822:Mark members as static", Justification = "<Pending>")]
-[assembly: SuppressMessage("Minor Code Smell", "S3267:Loops should be simplified with \"LINQ\" expressions", Justification = "<Pending>", Scope = "member", Target = "~M:Markdowser.Processing.ContentProcessorManager.ProcessContent(System.Net.HttpWebResponse,System.IProgress{Markdowser.Processing.ProcessingProgress})~Markdowser.ViewModels.ContentViewModelBase")]
+[assembly: SuppressMessage("Performance", "CA1822:Mark members as static", Justification = "<Pending>")]

src/Markdowser/Markdowser.csproj

@@ -39,7 +39,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Folder Include="Processing\Processors\" />
-    <Folder Include="Views\Content\" />
+    <Compile Update="Views\Content\MarkdownContentView.axaml.cs">
+      <DependentUpon>MarkdownContentView.axaml</DependentUpon>
+    </Compile>
   </ItemGroup>
 </Project>

src/Markdowser/Processing/ContentProcessorManager.cs

@@ -2,7 +2,7 @@
 
 using System;
 using System.Collections.Generic;
-using System.Net;
+using System.Net.Http;
 using System.Threading.Tasks;
 
 namespace Markdowser.Processing;
@@ -16,9 +16,9 @@ internal class ContentProcessorManager
         processors.Add(processor);
     }
 
-    public Task<ContentViewModelBase> ProcessContent(HttpWebResponse response, IProgress<ProcessingProgress> progress)
+    public Task<ContentViewModelBase> ProcessContent(HttpResponseMessage httpResponseMessage, IProgress<ProcessingProgress> progress)
     {
-        IContentProcessor? processor = processors.Find(processor => processor.CanProcess(response)) ?? throw new InvalidOperationException("No processor found for the given response.");
-        return processor.Process(response, progress);
+        IContentProcessor? processor = processors.Find(processor => processor.CanProcess(httpResponseMessage.Content.Headers)) ?? throw new InvalidOperationException($"No processor found for content type {httpResponseMessage.Content.Headers.ContentType}");
+        return processor.Process(httpResponseMessage, progress);
     }
 }

src/Markdowser/Processing/IContentProcessor.cs

@@ -1,14 +1,15 @@
 using Markdowser.ViewModels;
 
 using System;
-using System.Net;
+using System.Net.Http;
+using System.Net.Http.Headers;
 using System.Threading.Tasks;
 
 namespace Markdowser.Processing;
 
 internal interface IContentProcessor
 {
-    bool CanProcess(HttpWebResponse response);
+    bool CanProcess(HttpContentHeaders httpContentHeaders);
 
-    Task<ContentViewModelBase> Process(HttpWebResponse response, IProgress<ProcessingProgress> progress);
+    Task<ContentViewModelBase> Process(HttpResponseMessage httpResponseMessage, IProgress<ProcessingProgress> progress);
 }

src/Markdowser/Processing/ProcessingProgress.cs

@@ -1,9 +1,10 @@
 namespace Markdowser.Processing;
 
-public readonly struct ProcessingProgress(int current, int total)
+public readonly struct ProcessingProgress(long current, long total, string? message = null)
 {
-    public int Current { get; } = current;
-    public int Total { get; } = total;
+    public long Current { get; } = current;
+    public long Total { get; } = total;
+    public string? Message { get; } = message;
 
-    public double Percentage => (double)Current / Total * 100;
+    public int Percentage => (int)((double)Total / Current * 100);
 }

src/Markdowser/Processing/Processors/HtmlProcessor.cs

@@ -0,0 +1,94 @@
+using HtmlAgilityPack;
+
+using Markdowser.ViewModels;
+using Markdowser.ViewModels.Content;
+
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace Markdowser.Processing.Processors;
+
+internal partial class HtmlProcessor : IContentProcessor
+{
+    private readonly ReverseMarkdown.Converter markdownConverter = new();
+
+    public HtmlProcessor()
+    {
+        markdownConverter.Config.UnknownTags = ReverseMarkdown.Config.UnknownTagsOption.Bypass;
+        markdownConverter.Config.SuppressDivNewlines = false;
+        markdownConverter.Config.SmartHrefHandling = false;
+    }
+
+    public bool CanProcess(HttpContentHeaders httpContentHeaders)
+    {
+        return httpContentHeaders.ContentType?.MediaType == "text/html";
+    }
+
+    public async Task<ContentViewModelBase> Process(HttpResponseMessage httpResponseMessage, IProgress<ProcessingProgress> progress)
+    {
+        StringBuilder html = new();
+        StringBuilder finalMarkdown = new();
+
+        long length = httpResponseMessage.Content.Headers.ContentLength ?? 0;
+
+        using Stream contentStream = await httpResponseMessage.Content.ReadAsStreamAsync();
+        using StreamReader streamReader = new(contentStream);
+
+        while (!streamReader.EndOfStream)
+        {
+            _ = html.AppendLine(await streamReader.ReadLineAsync());
+
+            progress.Report(new ProcessingProgress(length, contentStream.Position));
+        }
+
+        HtmlDocument htmlDoc = new HtmlDocument();
+        htmlDoc.LoadHtml(html.ToString());
+        string title = htmlDoc.DocumentNode.SelectSingleNode("html/head/title")?.InnerText?.Trim() ?? httpResponseMessage.RequestMessage?.RequestUri?.ToString() ?? "Untitled";
+
+        Debug.WriteLine("Converting HTML to markdown...");
+
+        string markdown = markdownConverter.Convert(html.ToString());
+
+        Debug.WriteLine("Processing markdown...");
+
+        int currentLine = 0;
+
+        string[] lines = markdown.Split('\n');
+
+        foreach (string line in lines)
+        {
+            progress.Report(new ProcessingProgress(lines.Length, currentLine));
+            currentLine++;
+
+            string trimmedLine = line.Trim();
+
+            if (trimmedLine.All(c => c == '#'))
+            {
+                _ = finalMarkdown.Append(trimmedLine);
+                continue;
+            }
+            else if (MarkdownImage().IsMatch(trimmedLine))
+            {
+                _ = finalMarkdown.AppendLine()
+                .Append(trimmedLine)
+                .AppendLine()
+                .AppendLine();
+                continue;
+            }
+
+            _ = finalMarkdown.AppendLine(trimmedLine);
+        }
+
+        return new MarkdownContentViewModel(title, finalMarkdown.ToString());
+    }
+
+    [GeneratedRegex("!\\[(.*?)\\]\\((.*?)\\)")]
+    private static partial Regex MarkdownImage();
+}

src/Markdowser/Utilities/HttpPathResolver.cs

@@ -1,7 +1,13 @@
-using Avalonia.Platform;
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Controls.Notifications;
+using Avalonia.Platform;
+using Avalonia.Threading;
 
 using Markdown.Avalonia.Utils;
+
 using Markdowser.Models;
+
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -36,10 +42,22 @@ public class HttpPathResolver : IPathResolver
 
         Debug.WriteLine($"Resolving image: {relativeOrAbsolutePath}");
 
-        HttpResponseMessage httpResponseMessage = await httpClient.GetAsync(relativeOrAbsolutePath)!;
+        HttpResponseMessage httpResponseMessage;
+
+        try
+        {
+            httpResponseMessage = await httpClient.GetAsync(relativeOrAbsolutePath)!;
+        }
+        catch (Exception ex)
+        {
+            // error with inluding url and message
+            ShowError($"Failed to fetch image: {ex.Message}\n{relativeOrAbsolutePath} - ");
+            return GetLogo();
+        }
 
         if (!httpResponseMessage.IsSuccessStatusCode)
         {
+            ShowError($"Failed to fetch image: {httpResponseMessage.ReasonPhrase}\n{relativeOrAbsolutePath}");
             return GetLogo();
         }
 
@@ -55,4 +73,12 @@ public class HttpPathResolver : IPathResolver
 
         return AssetLoader.Open(new Uri("avares://Markdowser/Assets/Markdowser-Light-Transparent.png"))!;
     }
+
+    private static void ShowError(string message)
+    {
+        if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop && desktop.MainWindow?.DataContext is ViewModels.MainWindowViewModel vm)
+        {
+            Dispatcher.UIThread.Post(() => vm.WindowNotificationManager.Show(new Notification("Error", message, NotificationType.Error)));
+        }
+    }
 }

src/Markdowser/ViewLocator.cs

@@ -6,20 +6,22 @@ using Markdowser.ViewModels;
 using System;
 
 namespace Markdowser;
+
 public class ViewLocator : IDataTemplate
 {
-
     public Control? Build(object? data)
     {
         if (data is null)
+        {
             return null;
+        }
 
-        var name = data.GetType().FullName!.Replace("ViewModel", "View", StringComparison.Ordinal);
-        var type = Type.GetType(name);
+        string name = data.GetType().FullName!.Replace("ViewModel", "View", StringComparison.Ordinal);
+        Type? type = Type.GetType(name);
 
         if (type != null)
         {
-            var control = (Control)Activator.CreateInstance(type)!;
+            Control control = (Control)Activator.CreateInstance(type)!;
             control.DataContext = data;
             return control;
         }
@@ -29,6 +31,6 @@ public class ViewLocator : IDataTemplate
 
     public bool Match(object? data)
     {
-        return data is ViewModelBase;
+        return data is ViewModelBase or ContentViewModelBase;
     }
-}
+}

src/Markdowser/ViewModels/MainWindowViewModel.cs

@@ -1,10 +1,12 @@
 using Avalonia.Controls;
+using Avalonia.Controls.Notifications;
 using Avalonia.Threading;
 
-using HtmlAgilityPack;
-
 using Markdowser.Models;
+using Markdowser.Processing;
+using Markdowser.Processing.Processors;
 using Markdowser.Utilities;
+using Markdowser.ViewModels.Content;
 
 using ReactiveUI;
 
@@ -12,12 +14,9 @@ using System;
 using System.Collections.ObjectModel;
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
-using System.IO;
-using System.Linq;
 using System.Net.Http;
 using System.Reflection;
 using System.Text;
-using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Windows.Input;
 
@@ -26,10 +25,9 @@ namespace Markdowser.ViewModels;
 public partial class MainWindowViewModel : ViewModelBase
 {
     private readonly HttpClient httpClient = new(new HttpClientHandler() { AllowAutoRedirect = true });
-    private readonly ReverseMarkdown.Converter markdownConverter = new();
+    private readonly ContentProcessorManager contentProcessorManager = new();
 
-    private readonly StringBuilder html = new();
-    private StringBuilder? content;
+    private ContentViewModelBase content;
     private TabItem currentTab = null!;
     private bool showSidePanel;
     private bool isBusy;
@@ -54,9 +52,9 @@ public partial class MainWindowViewModel : ViewModelBase
         }
     }
 
-    public StringBuilder Content
+    public ContentViewModelBase Content
     {
-        get => content ?? DefaultContent;
+        get => content;
         set => this.RaiseAndSetIfChanged(ref content, value);
     }
 
@@ -89,8 +87,8 @@ public partial class MainWindowViewModel : ViewModelBase
     }
 
     public SettingsViewModel SettingsViewModel => new SettingsViewModel();
-    public RawHtmlViewModel RawHtmlViewModel => new RawHtmlViewModel(html);
-    public RawMarkdownViewModel RawMarkdownViewModel => new RawMarkdownViewModel(() => Content);
+    public RawHtmlViewModel RawHtmlViewModel => new RawHtmlViewModel(new());
+    public RawMarkdownViewModel RawMarkdownViewModel => new RawMarkdownViewModel(() => new());
     public bool CloseTabEnabled => Tabs.Count > 1;
     public bool BackEnabled => GlobalState.BackHistory.Count > 0;
     public bool ForwardEnabled => GlobalState.ForwardHistory.Count > 0;
@@ -145,21 +143,21 @@ public partial class MainWindowViewModel : ViewModelBase
         this.RaisePropertyChanged(nameof(CloseTabEnabled));
     });
 
-    private StringBuilder DefaultContent => new StringBuilder()
+    private MarkdownContentViewModel DefaultContent => new("New Tab", new StringBuilder()
         .AppendLine($"![Logo](avares://Markdowser/Assets/Markdowser-{(Settings.Current.DarkMode ? "Dark" : "Light")}-Transparent.png)")
         .AppendLine()
         .AppendLine($"{nameof(Markdowser)} {Assembly.GetExecutingAssembly().GetName().Version?.ToString()}\n")
         .AppendLine("A markdown web browser.\n")
-        .AppendLine("[GitHub](https://github.me.stone-red.net/Markdowser)");
+        .AppendLine("[GitHub](https://github.me.stone-red.net/Markdowser)").ToString());
 
     public MainWindowViewModel()
     {
         httpClient.DefaultRequestHeaders.UserAgent.ParseAdd($"{nameof(Markdowser)}/{Assembly.GetExecutingAssembly().GetName().Version?.ToString()}");
         httpClient.Timeout = TimeSpan.FromSeconds(10);
 
-        markdownConverter.Config.UnknownTags = ReverseMarkdown.Config.UnknownTagsOption.Bypass;
-        markdownConverter.Config.SuppressDivNewlines = false;
-        markdownConverter.Config.SmartHrefHandling = false;
+        content = DefaultContent;
+
+        contentProcessorManager.RegisterProcessor(new HtmlProcessor());
 
         GlobalState.UrlChanged += (sender, url) =>
         {
@@ -188,16 +186,11 @@ public partial class MainWindowViewModel : ViewModelBase
         return Uri.TryCreate(uriString, UriKind.Absolute, out uri) && (uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps);
     }
 
-    [GeneratedRegex("!\\[(.*?)\\]\\((.*?)\\)")]
-    private static partial Regex MarkdownImage();
-
     private void FetchUrl()
     {
         if (string.IsNullOrWhiteSpace(Url))
         {
-            content = null;
-            _ = html.Clear();
-            ContentChanged();
+            Content = DefaultContent;
             Debug.WriteLine("URL is empty.");
             CurrentTab.Header = "New Tab";
             return;
@@ -205,14 +198,17 @@ public partial class MainWindowViewModel : ViewModelBase
 
         if (!IsValidHttpUri(Url, out _))
         {
-            // Search with duckduckgo
-            Url = $"https://duckduckgo.com/html/?kd=-1&k1=-1&q={Uri.EscapeDataString(Url)}";
+            if (Url.StartsWith("//"))
+            {
+                Url = $"https:{Url}";
+            }
+            else
+            {
+                // Search with duckduckgo
+                Url = $"https://duckduckgo.com/html/?kd=-1&k1=-1&q={Uri.EscapeDataString(Url)}";
+            }
         }
 
-        content ??= new StringBuilder();
-        _ = content.Clear();
-        _ = html.Clear();
-
         IsBusy = true;
         Progress = 0;
 
@@ -224,103 +220,65 @@ public partial class MainWindowViewModel : ViewModelBase
             {
                 HttpResponseMessage httpResponseMessage = await httpClient.GetAsync(Url);
 
-                Url = httpResponseMessage.RequestMessage?.RequestUri?.ToString() ?? Url;
+                string? newUrl = httpResponseMessage.RequestMessage?.RequestUri?.ToString();
+
+                if (newUrl is not null && newUrl != Url)
+                {
+                    string oldUrl = Url;
+                    Dispatcher.UIThread.Post(() => WindowNotificationManager.Show(new Notification("Redirected", $"Redirected from\n{oldUrl}\nto\n{newUrl}", NotificationType.Warning)));
+                    Url = newUrl;
+                }
 
                 if (!httpResponseMessage.IsSuccessStatusCode)
                 {
                     IsBusy = false;
-                    _ = content.AppendLine($"# {(int)httpResponseMessage.StatusCode} {httpResponseMessage.StatusCode}");
-                    _ = content.AppendLine($"Failed to fetch URL: {httpResponseMessage.ReasonPhrase}");
-                    ContentChanged();
+
+                    StringBuilder errorMessage = new();
+
+                    _ = errorMessage.AppendLine($"# {(int)httpResponseMessage.StatusCode} {httpResponseMessage.StatusCode}");
+                    _ = errorMessage.AppendLine($"Failed to fetch URL: {httpResponseMessage.ReasonPhrase}");
+
+                    Content = new MarkdownContentViewModel("Error", errorMessage.ToString());
                     return;
                 }
 
-                long length = httpResponseMessage.Content.Headers.ContentLength ?? 0;
+                Content = await contentProcessorManager.ProcessContent(httpResponseMessage, new Progress<ProcessingProgress>(p => Progress = p.Percentage));
 
-                using Stream contentStream = await httpResponseMessage.Content.ReadAsStreamAsync();
-                using StreamReader streamReader = new(contentStream);
-
-                while (!streamReader.EndOfStream)
-                {
-                    _ = html.AppendLine(await streamReader.ReadLineAsync());
-                    Progress = (int)((double)contentStream.Position / length * 100);
-                }
-
-                HtmlDocument htmlDoc = new HtmlDocument();
-                htmlDoc.LoadHtml(html.ToString());
-                string title = htmlDoc.DocumentNode.SelectSingleNode("html/head/title")?.InnerText ?? Url;
-
-                Dispatcher.UIThread.Post(() =>
-                {
-                    CurrentTab.Header = title?.Trim() ?? Url;
-                });
+                Dispatcher.UIThread.Post(() => CurrentTab.Header = Content.Title);
             }
             catch (HttpRequestException e)
             {
-                IsBusy = false;
+                StringBuilder errorMessage = new();
 
                 if (e.StatusCode is not null)
                 {
-                    _ = content.AppendLine($"# {(int)e.StatusCode} {e.StatusCode}");
+                    _ = errorMessage.AppendLine($"# {(int)e.StatusCode} {e.StatusCode}");
+                    Dispatcher.UIThread.Post(() => CurrentTab.Header = $"Error: {(int)e.StatusCode} {e.StatusCode}");
+                }
+                else
+                {
+                    Dispatcher.UIThread.Post(() => CurrentTab.Header = $"Error: {e.GetType().Name}");
                 }
 
-                _ = content.AppendLine($"# {e.HttpRequestError}");
-                _ = content.AppendLine($"Failed to fetch URL: {e.Message}");
-                ContentChanged();
+                _ = errorMessage.AppendLine($"# {e.HttpRequestError}");
+                _ = errorMessage.AppendLine($"Failed to fetch URL: {e.Message}");
+
+                Content = new MarkdownContentViewModel("Error", errorMessage.ToString());
             }
             catch (Exception e)
             {
-                IsBusy = false;
-                _ = content.AppendLine($"# {e.GetType().Name}");
-                _ = content.AppendLine($"Failed to fetch URL: {e.Message}");
-                ContentChanged();
+                StringBuilder errorMessage = new();
+
+                _ = errorMessage.AppendLine($"# {e.GetType().Name}");
+                _ = errorMessage.AppendLine($"Failed to fetch URL: {e.Message}");
+
+                Content = new MarkdownContentViewModel("Error", errorMessage.ToString());
+                Dispatcher.UIThread.Post(() => CurrentTab.Header = $"Error: {e.GetType().Name}");
             }
-
-            Progress = 0;
-
-            Debug.WriteLine("Converting HTML to markdown...");
-
-            string markdown = markdownConverter.Convert(html.ToString());
-
-            Debug.WriteLine("Processing markdown...");
-
-            int currentLine = 0;
-
-            string[] lines = markdown.Split('\n');
-            foreach (string line in lines)
+            finally
             {
-                Progress = (int)((double)currentLine / lines.Length * 100);
-                currentLine++;
-
-                string trimmedLine = line.Trim();
-
-                if (trimmedLine.All(c => c == '#'))
-                {
-                    _ = Content.Append(trimmedLine);
-                    continue;
-                }
-                else if (MarkdownImage().IsMatch(trimmedLine))
-                {
-                    _ = content.AppendLine()
-                    .Append(trimmedLine)
-                    .AppendLine()
-                    .AppendLine();
-                    continue;
-                }
-
-                _ = content.AppendLine(trimmedLine);
+                IsBusy = false;
             }
-
-            ContentChanged();
-
-            IsBusy = false;
         });
     }
-
-    private void ContentChanged()
-    {
-        this.RaisePropertyChanged(nameof(Content));
-        this.RaisePropertyChanged(nameof(RawHtmlViewModel));
-        this.RaisePropertyChanged(nameof(RawMarkdownViewModel));
-    }
 }

src/Markdowser/ViewModels/ViewModelBase.cs

@@ -1,4 +1,5 @@
 using Avalonia.Controls;
+using Avalonia.Controls.Notifications;
 using Avalonia.Platform;
 
 using Markdowser.Models;
@@ -11,7 +12,19 @@ namespace Markdowser.ViewModels;
 
 public class ViewModelBase : ReactiveObject
 {
+    private WindowNotificationManager? windowNotificationManager;
     public string Title => $"{nameof(Markdowser)} - {Assembly.GetExecutingAssembly().GetName().Version?.ToString()}";
 
     public WindowIcon Icon => Settings.Current.DarkMode ? new WindowIcon(AssetLoader.Open(new("avares://Markdowser/Assets/Markdowser-Dark-Transparent.ico"))) : new WindowIcon(AssetLoader.Open(new("avares://Markdowser/Assets/Markdowser-Light-Transparent.ico")));
+
+    public WindowNotificationManager WindowNotificationManager => windowNotificationManager!;
+
+    protected internal void InitializeWindowNotificationManager(Window window)
+    {
+        TopLevel? topLevel = TopLevel.GetTopLevel(window);
+        windowNotificationManager = new WindowNotificationManager(topLevel)
+        {
+            Position = NotificationPosition.TopRight
+        };
+    }
 }

src/Markdowser/Views/Content/MarkdownContentView.axaml

@@ -0,0 +1,71 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:Markdowser.ViewModels"
+             xmlns:cmd="using:Markdowser.Commands"
+             xmlns:utils="using:Markdowser.Utilities"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             xmlns:md="https://github.com/whistyun/Markdown.Avalonia"
+             xmlns:ctxt="clr-namespace:ColorTextBlock.Avalonia;assembly=ColorTextBlock.Avalonia"
+             x:DataType="vm:Content.MarkdownContentViewModel"
+             x:Class="Markdowser.Views.Content.MarkdownContentView">
+
+    <UserControl.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary>
+                    <utils:HttpPathResolver x:Key="HttpPathResolver" />
+                    <cmd:HyperlinkCommand x:Key="HyperlinkCommand" />
+                    <cmd:ChangeThemeCommand x:Key="ChangeThemeCommand" />
+                    <cmd:HomeCommand x:Key="HomeCommand" />
+                </ResourceDictionary>
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </UserControl.Resources>
+
+    <Grid>
+        <md:MarkdownScrollViewer Margin="10 0 10 10" Markdown="{Binding Markdown}">
+            <md:MarkdownScrollViewer.Styles>
+                <Style Selector="ctxt|CTextBlock">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
+                </Style>
+                <Style Selector="ctxt|CTextBlock.Heading1">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
+                </Style>
+                <Style Selector="ctxt|CTextBlock.Heading2">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
+                </Style>
+                <Style Selector="ctxt|CTextBlock.Heading3">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
+                </Style>
+                <Style Selector="ctxt|CTextBlock.Heading4">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
+                </Style>
+                <Style Selector="ctxt|CTextBlock.Heading5">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
+                </Style>
+                <Style Selector="ctxt|CTextBlock.Heading6">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
+                </Style>
+                <Style Selector="ctxt|CHyperlink">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorLink}" />
+                </Style>
+                <Style Selector="ctxt|CHyperlink:pointerover">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorLinkPointerover}" />
+                </Style>
+                <Style Selector="ctxt|CHyperlink:pressed">
+                    <Setter Property="Foreground" Value="{DynamicResource SemiColorLinkVisited}" />
+                </Style>
+                <Style Selector="ctxt|CImage">
+                    <Setter Property="FittingWhenProtrude" Value="True" />
+                    <Setter Property="LayoutWidth" Value="500" />
+                    <Setter Property="SaveAspectRatio" Value="True" />
+                </Style>
+            </md:MarkdownScrollViewer.Styles>
+            <md:MarkdownScrollViewer.Plugins>
+                <md:MdAvPlugins PathResolver="{StaticResource HttpPathResolver}" HyperlinkCommand="{StaticResource HyperlinkCommand}" />
+            </md:MarkdownScrollViewer.Plugins>
+        </md:MarkdownScrollViewer>
+    </Grid>
+</UserControl>

src/Markdowser/Views/Content/MarkdownContentView.axaml.cs

@@ -0,0 +1,11 @@
+using Avalonia.Controls;
+
+namespace Markdowser.Views.Content;
+
+public partial class MarkdownContentView : UserControl
+{
+    public MarkdownContentView()
+    {
+        InitializeComponent();
+    }
+}

src/Markdowser/Views/MainWindow.axaml

@@ -5,14 +5,13 @@
         xmlns:utils="using:Markdowser.Utilities"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:md="https://github.com/whistyun/Markdown.Avalonia"
-        xmlns:ctxt="clr-namespace:ColorTextBlock.Avalonia;assembly=ColorTextBlock.Avalonia"
         xmlns:i="https://github.com/projektanker/icons.avalonia"
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
         x:Class="Markdowser.Views.MainWindow"
         x:DataType="vm:MainWindowViewModel"
         Icon="{Binding Icon}"
-        Title="{Binding Title}">
+        Title="{Binding Title}"
+        Loaded="Window_Loaded">
 
     <Design.DataContext>
         <!-- This only sets the DataContext for the previewer in an IDE,
@@ -24,8 +23,6 @@
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
                 <ResourceDictionary>
-                    <utils:HttpPathResolver x:Key="HttpPathResolver" />
-                    <cmd:HyperlinkCommand x:Key="HyperlinkCommand" />
                     <cmd:ChangeThemeCommand x:Key="ChangeThemeCommand" />
                     <cmd:HomeCommand x:Key="HomeCommand" />
                 </ResourceDictionary>
@@ -33,6 +30,17 @@
         </ResourceDictionary>
     </Window.Resources>
 
+    <Window.KeyBindings>
+        <KeyBinding Gesture="Ctrl+R" Command="{Binding Browse}" />
+        <KeyBinding Gesture="Alt+Home" Command="{StaticResource HomeCommand}" />
+        <KeyBinding Gesture="Alt+H" Command="{StaticResource HomeCommand}" />
+        <KeyBinding Gesture="Alt+Left" Command="{Binding Back}" />
+        <KeyBinding Gesture="Alt+Right" Command="{Binding Forward}" />
+        <KeyBinding Gesture="Ctrl+T" Command="{Binding NewTab}" />
+        <KeyBinding Gesture="Ctrl+W" Command="{Binding CloseTab}" />
+        <KeyBinding Gesture="Alt+S" Command="{Binding ShowSidePanel}" />
+    </Window.KeyBindings>
+
     <Grid RowDefinitions="Auto, *, Auto">
         <Grid Grid.Row="0" ColumnDefinitions="*, Auto, Auto">
             <TabControl Grid.Column="0" Theme="{DynamicResource ScrollTabControl}" SelectedItem="{Binding CurrentTab, Mode=TwoWay}" ItemsSource="{Binding Tabs}" />
@@ -47,48 +55,8 @@
                 <ColumnDefinition Width="*" utils:ColumnDefinition.IsVisible="{Binding ShowSidePanel}" />
             </Grid.ColumnDefinitions>
 
-            <md:MarkdownScrollViewer Margin="10 0 10 10" IsEnabled="{Binding !IsBusy}" Markdown="{Binding Content}">
-                <md:MarkdownScrollViewer.Styles>
-                    <Style Selector="ctxt|CTextBlock">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
-                    </Style>
-                    <Style Selector="ctxt|CTextBlock.Heading1">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
-                    </Style>
-                    <Style Selector="ctxt|CTextBlock.Heading2">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
-                    </Style>
-                    <Style Selector="ctxt|CTextBlock.Heading3">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
-                    </Style>
-                    <Style Selector="ctxt|CTextBlock.Heading4">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
-                    </Style>
-                    <Style Selector="ctxt|CTextBlock.Heading5">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
-                    </Style>
-                    <Style Selector="ctxt|CTextBlock.Heading6">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorText0}" />
-                    </Style>
-                    <Style Selector="ctxt|CHyperlink">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorLink}" />
-                    </Style>
-                    <Style Selector="ctxt|CHyperlink:pointerover">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorLinkPointerover}" />
-                    </Style>
-                    <Style Selector="ctxt|CHyperlink:pressed">
-                        <Setter Property="Foreground" Value="{DynamicResource SemiColorLinkVisited}" />
-                    </Style>
-                    <Style Selector="ctxt|CImage">
-                        <Setter Property="FittingWhenProtrude" Value="True" />
-                        <Setter Property="LayoutWidth" Value="500" />
-                        <Setter Property="SaveAspectRatio" Value="True" />
-                    </Style>
-                </md:MarkdownScrollViewer.Styles>
-                <md:MarkdownScrollViewer.Plugins>
-                    <md:MdAvPlugins PathResolver="{StaticResource HttpPathResolver}" HyperlinkCommand="{StaticResource HyperlinkCommand}" />
-                </md:MarkdownScrollViewer.Plugins>
-            </md:MarkdownScrollViewer>
+            <ContentControl IsEnabled="{Binding !IsBusy}" Margin="0 10 0 0" Content="{Binding Content}" />
+
             <GridSplitter Grid.Column="1" IsVisible="{Binding ShowSidePanel}" Background="{DynamicResource SemiColorTertiary}" ResizeDirection="Columns" />
             <TabControl  Grid.Column="2" IsVisible="{Binding ShowSidePanel}" Margin="10">
                 <TabItem Header="Settings">

src/Markdowser/Views/MainWindow.axaml.cs

@@ -8,4 +8,12 @@ public partial class MainWindow : Window
     {
         InitializeComponent();
     }
+
+    private void Window_Loaded(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        if (DataContext is ViewModels.MainWindowViewModel vm)
+        {
+            vm.InitializeWindowNotificationManager(this);
+        }
+    }
 }