From 69ac0bba94fd6b7de0888d35921a64e58ce7d99f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20H=C3=A4fele?= <haefele@xemio.net>
Date: Sun, 19 Nov 2023 18:35:09 +0100
Subject: [PATCH] Replace emoji:TextBlock with a default WPF textbox, so the
 user can select parts of the text and use it

---
 src/ChatPrisma/ChatPrisma.csproj              |  1 -
 src/ChatPrisma/Themes/TextBoxStyles.xaml      | 43 +++++++++++++++++++
 .../Views/OpenSource/OpenSourceViewModel.cs   |  1 -
 .../TextEnhancement/TextEnhancementView.xaml  | 21 ++++-----
 .../TextEnhancementView.xaml.cs               |  2 +-
 5 files changed, 55 insertions(+), 13 deletions(-)

diff --git a/src/ChatPrisma/ChatPrisma.csproj b/src/ChatPrisma/ChatPrisma.csproj
index 2e49fc3..9af1aea 100644
--- a/src/ChatPrisma/ChatPrisma.csproj
+++ b/src/ChatPrisma/ChatPrisma.csproj
@@ -15,7 +15,6 @@
         <PackageReference Include="Azure.AI.OpenAI" Version="1.0.0-beta.8" />
         <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
         <PackageReference Include="DevExpressMvvm" Version="22.1.3" />
-        <PackageReference Include="Emoji.Wpf" Version="0.3.4" />
         <PackageReference Include="GlobalKeyInterceptor" Version="1.0.0" />
         <PackageReference Include="Hardcodet.NotifyIcon.Wpf" Version="1.1.0" />
         <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0-rc.2.23479.6" />
diff --git a/src/ChatPrisma/Themes/TextBoxStyles.xaml b/src/ChatPrisma/Themes/TextBoxStyles.xaml
index 7561b2d..3a490e4 100644
--- a/src/ChatPrisma/Themes/TextBoxStyles.xaml
+++ b/src/ChatPrisma/Themes/TextBoxStyles.xaml
@@ -56,4 +56,47 @@
             </Setter.Value>
         </Setter>
     </Style>
+    
+    <Style x:Key="EmptyTextBox" TargetType="TextBox">
+        <Setter Property="Foreground" Value="White"/>
+        <Setter Property="CaretBrush" Value="White"/>
+        <Setter Property="Margin" Value="6, 7, 6, 7" />
+        <Setter Property="ContextMenu">
+            <Setter.Value>
+                <ContextMenu>
+                    <MenuItem Command="Cut">
+                        <MenuItem.Icon>
+                            <wpf:SymbolIcon Symbol="Cut" />
+                        </MenuItem.Icon>
+                    </MenuItem>
+                    <MenuItem Command="Copy">
+                        <MenuItem.Icon>
+                            <wpf:SymbolIcon Symbol="Copy" />
+                        </MenuItem.Icon>
+                    </MenuItem>
+                    <MenuItem Command="Paste">
+                        <MenuItem.Icon>
+                            <wpf:SymbolIcon Symbol="ClipboardPaste" />
+                        </MenuItem.Icon>
+                    </MenuItem>
+                </ContextMenu>
+            </Setter.Value>
+        </Setter>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="TextBox">
+                    <Grid Margin="{TemplateBinding Margin}">
+                        <TextBlock Text="{Binding Path=(themes:Attached.Placeholder), RelativeSource={RelativeSource TemplatedParent}}" 
+                                   Margin="2, 0, 0, 0" 
+                                   Foreground="Gray"
+                                   Visibility="{DXBinding '@p.Text != null and @p.Text.Length > 0 ? $Visibility.Collapsed : $Visibility.Visible'}" />
+                        
+                        <ScrollViewer x:Name="PART_ContentHost" 
+                                      VerticalScrollBarVisibility="{TemplateBinding VerticalScrollBarVisibility}"
+                                      HorizontalScrollBarVisibility="{TemplateBinding HorizontalScrollBarVisibility}"/>
+                    </Grid>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
 </ResourceDictionary>
\ No newline at end of file
diff --git a/src/ChatPrisma/Views/OpenSource/OpenSourceViewModel.cs b/src/ChatPrisma/Views/OpenSource/OpenSourceViewModel.cs
index e0c89d6..e1c1195 100644
--- a/src/ChatPrisma/Views/OpenSource/OpenSourceViewModel.cs
+++ b/src/ChatPrisma/Views/OpenSource/OpenSourceViewModel.cs
@@ -25,7 +25,6 @@ public partial class OpenSourceViewModel(IOptionsMonitor<ApplicationOptions> app
         new ThirdPartyLibrary("GlobalKeyInterceptor",                 new("https://github.com/arcanexhoax/GlobalKeyInterceptor"),                          "MIT",            new Uri("https://github.com/arcanexhoax/GlobalKeyInterceptor/blob/main/LICENSE")),
         new ThirdPartyLibrary("NLog",                                 new("https://nlog-project.org/"),                                                    "BSD 3-Clause",   new Uri("https://github.com/NLog/NLog/blob/dev/LICENSE.txt")),
         new ThirdPartyLibrary("Hardcodet WPF NotifyIcon",             new("https://github.com/hardcodet/wpf-notifyicon"),                                  "CPOL",           new Uri("https://github.com/hardcodet/wpf-notifyicon/blob/develop/LICENSE")),
-        new ThirdPartyLibrary("Emoji.Wpf",                            new("https://github.com/samhocevar/emoji.wpf"),                                      "WTFPL",          new Uri("https://github.com/samhocevar/emoji.wpf/blob/main/COPYING")),
         new ThirdPartyLibrary("DevExpress.Mvvm",                      new("https://github.com/DevExpress/DevExpress.Mvvm.Free"),                           "MIT",            new Uri("https://github.com/DevExpress/DevExpress.Mvvm.Free/blob/main/LICENSE")),
         new ThirdPartyLibrary("Nerdbank.GitVersioning",               new("https://github.com/dotnet/Nerdbank.GitVersioning"),                             "MIT",            new Uri("https://github.com/dotnet/Nerdbank.GitVersioning/blob/main/LICENSE")),
         new ThirdPartyLibrary("SingleInstanceCore",                   new("https://github.com/soheilkd/SingleInstanceCore"),                               "MIT",            new Uri("https://github.com/soheilkd/SingleInstanceCore/blob/master/LICENSE")),
diff --git a/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml b/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml
index 53ae526..c5ac985 100644
--- a/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml
+++ b/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml
@@ -2,7 +2,6 @@
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:local="clr-namespace:ChatPrisma.Views.TextEnhancement"
-             xmlns:emoji="clr-namespace:Emoji.Wpf;assembly=Emoji.Wpf"
              xmlns:themes="clr-namespace:ChatPrisma.Themes"
              xmlns:wpf="clr-namespace:FluentIcons.WPF;assembly=FluentIcons.WPF"
              
@@ -77,15 +76,17 @@
             <ScrollViewer x:Name="TextScrollViewer"
                           VerticalScrollBarVisibility="Auto"
                           Padding="0, -8, 0, -10"> <!-- Make the content stretch fully vertically inside the GroupBox (same values as GroupBox inner margin) -->
-                <emoji:TextBlock x:Name="TextTextBlock"
-                                 Text="{Binding CurrentText}"
-                                 FontSize="{Binding TextSize}"
-                                 TextWrapping="Wrap" 
-                                 SizeChanged="TextTextBlock_OnSizeChanged">
-                    <emoji:TextBlock.Margin>
-                        <Thickness>0, 8, 0, 10</Thickness> <!-- Give it some inner margin back (same values as GroupBox inner margin) -->
-                    </emoji:TextBlock.Margin>
-                </emoji:TextBlock>
+                <TextBox x:Name="TextTextBox"
+                         Style="{StaticResource EmptyTextBox}"
+                         Text="{Binding CurrentText}"
+                         FontSize="{Binding TextSize}"
+                         TextWrapping="Wrap"
+                         IsReadOnly="True"
+                         SizeChanged="TextTextBox_OnSizeChanged">
+                    <TextBox.Margin>
+                        <Thickness>0, 4, 0, 6</Thickness> <!-- Give it some inner margin back so it looks good -->
+                    </TextBox.Margin>
+                </TextBox>
             </ScrollViewer>
         </GroupBox>
         
diff --git a/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml.cs b/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml.cs
index 030ee2c..9bc001e 100644
--- a/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml.cs
+++ b/src/ChatPrisma/Views/TextEnhancement/TextEnhancementView.xaml.cs
@@ -86,7 +86,7 @@ private void ViewModelOnApplyInstructionCancelled(object? sender, EventArgs e)
         this.InstructionTextBox.Select(this.InstructionTextBox.Text.Length, 0);
     }
 
-    private void TextTextBlock_OnSizeChanged(object sender, SizeChangedEventArgs e)
+    private void TextTextBox_OnSizeChanged(object sender, SizeChangedEventArgs e)
     {
         // Keep the ScrollViewer scrolled to the bottom while the text is generating
         this.ScrollToBottom();