App.xaml

<Application x:Class="OneColumnEncoder.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:OneColumnEncoder"
             xmlns:viewmodels="clr-namespace:OneColumnEncoder.ViewModels"
             xmlns:conv="clr-namespace:OneColumnEncoder.Converters">
    <Application.Resources>
        <ResourceDictionary>
            <!-- Theme colors - default to Light theme -->
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Views/Themes/Light.xaml" />
                <ResourceDictionary Source="Views/Themes/Generic.xaml" />
            </ResourceDictionary.MergedDictionaries>
            
            <!-- Converters -->
            <BooleanToVisibilityConverter x:Key="BoolToVisibility" />
            <conv:InvertBoolToVisibilityConverter x:Key="InvertBoolToVisibility" />
            <conv:SidebarWidthConverter x:Key="SidebarWidthConverter" />

            <!-- Fonts: resolved at runtime by AppFontProvider -->
            <FontFamily x:Key="UiFont">Segoe UI</FontFamily>
            <FontFamily x:Key="CodeFont">Consolas</FontFamily>
            
            <!-- TextBox global style for theme support -->
            <Style TargetType="TextBox">
                <Setter Property="Foreground"
                        Value="{DynamicResource GlobalPrimary}" />
                <Setter Property="Background"
                        Value="{DynamicResource Background}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource GlobalTertiary}" />
                <Setter Property="CaretBrush"
                        Value="{DynamicResource GlobalPrimary}" />
                <Setter Property="SelectionBrush"
                        Value="{DynamicResource BorderAzure}" />
            </Style>
            
            <!-- Buttons -->
            <Style x:Key="LinkButton"
                   TargetType="Button"
                   BasedOn="{StaticResource H3C}">
                <Setter Property="Background"
                        Value="Transparent" />
                <Setter Property="Foreground"
                        Value="{DynamicResource GlobalPrimary}" />
                <Setter Property="BorderThickness"
                        Value="0" />
                <Setter Property="VerticalAlignment"
                        Value="Center" />
                <Setter Property="HorizontalContentAlignment"
                        Value="Left" />
                <Setter Property="Margin"
                        Value="0 4.5 8 0" />
                <Setter Property="Cursor"
                        Value="Hand" />
                <!-- Modify border defaults -->
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="Button">
                            <Border Background="{TemplateBinding Background}"
                                    Margin="{TemplateBinding Margin}"
                                    Padding="{TemplateBinding Padding}"
                                    BorderThickness="0"
                                    CornerRadius="10">
                                <ContentPresenter VerticalAlignment="Center"
                                                  RecognizesAccessKey="True"
                                                  TextElement.Foreground="{TemplateBinding Foreground}" />
                            </Border>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Opacity"
                                Value="0.85" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource GlobalSecondary}" />
                    </Trigger>
                    <Trigger Property="IsFocused"
                             Value="True">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BorderGreen}" />
                    </Trigger>
                    <Trigger Property="IsCancel"
                             Value="True">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BorderRed}" />
                    </Trigger>
                </Style.Triggers>
            </Style>

            <Style x:Key="BaseButton"
                   TargetType="Button"
                   BasedOn="{StaticResource ControlDefaults}">
                <Setter Property="Width"
                        Value="Auto" />
                <Setter Property="Height"
                        Value="40" />
                <Setter Property="FontSize"
                        Value="13" />
                <!-- Border has its own defaults, using ControlTemplate to modify -->
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="Button">
                            <Border Background="{TemplateBinding Background}"
                                    Margin="{TemplateBinding Margin}"
                                    Padding="{TemplateBinding Padding}"
                                    BorderBrush="{TemplateBinding BorderBrush}"
                                    BorderThickness="{TemplateBinding BorderThickness}"
                                    CornerRadius="5">
                                <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                                  VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
                            </Border>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
                <Style.Triggers>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource ButtonDisabledForeground}" />
                        <Setter Property="Background"
                                Value="{DynamicResource ButtonDisabledBackground}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource ButtonDisabledBorder}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                    
                    <Trigger Property="IsCancel"
                             Value="True">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BorderRed}" />
                        <Setter Property="Background"
                                Value="{DynamicResource BackgroundRed}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource BorderRed}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                </Style.Triggers>
            </Style>

            <!-- Std Button -->
            <Style x:Key="PrimaryButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="{DynamicResource ButtonPrimary}" />
                <Setter Property="Foreground"
                        Value="{DynamicResource Background}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource ButtonPrimary}" />
                <Setter Property="BorderThickness"
                        Value="0" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Background"
                                Value="{DynamicResource Background}" />
                        <Setter Property="Foreground"
                                Value="{DynamicResource ButtonPrimary}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource ButtonPrimary}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource ButtonDisabledForeground}" />
                        <Setter Property="Background"
                                Value="{DynamicResource ButtonDisabledBackground}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource ButtonDisabledBorder}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            <Style x:Key="SecondaryButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="{DynamicResource GlobalSecondary}" />
                <Setter Property="Foreground"
                        Value="{DynamicResource Background}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource GlobalSecondary}" />
                <Setter Property="BorderThickness"
                        Value="0" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Background"
                                Value="{DynamicResource Background}" />
                        <Setter Property="Foreground"
                                Value="{DynamicResource GlobalSecondary}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource GlobalSecondary}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource ButtonDisabledForeground}" />
                        <Setter Property="Background"
                                Value="{DynamicResource ButtonDisabledBackground}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource ButtonDisabledBorder}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            <Style x:Key="TertiaryButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="{DynamicResource GlobalTertiary}" />
                <Setter Property="Foreground"
                        Value="{DynamicResource Background}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource GlobalTertiary}" />
                <Setter Property="BorderThickness"
                        Value="0" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Background"
                                Value="{DynamicResource Background}" />
                        <Setter Property="Foreground"
                                Value="{DynamicResource GlobalTertiary}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource GlobalTertiary}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource ButtonDisabledForeground}" />
                        <Setter Property="Background"
                                Value="{DynamicResource ButtonDisabledBackground}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource ButtonDisabledBorder}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            <Style x:Key="QuaternaryButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="{DynamicResource GlobalQuaternary}" />
                <Setter Property="Foreground"
                        Value="{DynamicResource Background}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource GlobalQuaternary}" />
                <Setter Property="BorderThickness"
                        Value="0" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Background"
                                Value="{DynamicResource Background}" />
                        <Setter Property="Foreground"
                                Value="{DynamicResource GlobalQuaternary}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource GlobalQuaternary}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource ButtonDisabledForeground}" />
                        <Setter Property="Background"
                                Value="{DynamicResource ButtonDisabledBackground}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource ButtonDisabledBorder}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            <Style x:Key="NormalButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="{DynamicResource Background}" />
                <Setter Property="Foreground"
                        Value="{DynamicResource ButtonPrimary}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource ButtonPrimary}" />
                <Setter Property="BorderThickness"
                        Value="1.5" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Background"
                                Value="{DynamicResource ButtonPrimary}" />
                        <Setter Property="Foreground"
                                Value="{DynamicResource Background}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource Background}" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource ButtonDisabledForeground}" />
                        <Setter Property="Background"
                                Value="{DynamicResource ButtonDisabledBackground}" />
                        <Setter Property="BorderBrush"
                                Value="{DynamicResource ButtonDisabledBorder}" />
                        <Setter Property="BorderThickness"
                                Value="1.5" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            <Style x:Key="TealButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="Transparent" />
                <Setter Property="Foreground"
                        Value="{DynamicResource BorderGreen}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource BorderGreen}" />
                <Setter Property="BorderThickness"
                        Value="1.5" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BackgroundGreen}" />
                        <Setter Property="Background"
                                Value="{DynamicResource BorderGreen}" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BackgroundGreen2}" />
                        <Setter Property="Background"
                                Value="Transparent" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            <Style x:Key="AzureButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="Transparent" />
                <Setter Property="Foreground"
                        Value="{DynamicResource BorderAzure}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource BorderAzure}" />
                <Setter Property="BorderThickness"
                        Value="1.5" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BackgroundAzure}" />
                        <Setter Property="Background"
                                Value="{DynamicResource BorderAzure}" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BackgroundAzure2}" />
                        <Setter Property="Background"
                                Value="Transparent" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            <Style x:Key="LavenderButton"
                   TargetType="Button"
                   BasedOn="{StaticResource BaseButton}">
                <Setter Property="Background"
                        Value="Transparent" />
                <Setter Property="Foreground"
                        Value="{DynamicResource BorderPurpleish}" />
                <Setter Property="BorderBrush"
                        Value="{DynamicResource BorderPurpleish}" />
                <Setter Property="BorderThickness"
                        Value="1.5" />
                <Style.Triggers>
                    <Trigger Property="IsMouseOver"
                             Value="True">
                        <Setter Property="Background"
                                Value="{DynamicResource BorderPurpleish}" />
                        <Setter Property="Foreground"
                                Value="{DynamicResource BackgroundLavender}" />
                    </Trigger>
                    <Trigger Property="IsEnabled"
                             Value="False">
                        <Setter Property="Foreground"
                                Value="{DynamicResource BorderThistle}" />
                        <Setter Property="Background"
                                Value="Transparent" />
                    </Trigger>
                </Style.Triggers>
            </Style>
            
            <!-- Dropdown Menu Combobox, not items in dropdown -->
            <Style x:Key="DropdownToggleButton"
                   TargetType="ToggleButton">
                <Setter Property="Background"
                        Value="{DynamicResource GlobalSecondary}" />
                <Setter Property="BorderBrush"
                        Value="Transparent" />
                <Setter Property="Foreground"
                        Value="{DynamicResource Background}" />
                <Setter Property="BorderThickness"
                        Value="1.5" />
                <Setter Property="HorizontalContentAlignment"
                        Value="Left" />
                <Setter Property="VerticalContentAlignment"
                        Value="Center" />
                <Setter Property="FontSize"
                        Value="12" />
                <Setter Property="Padding"
                        Value="9 0" />
                <Setter Property="MinHeight"
                        Value="22" />
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="ToggleButton">
                            <Border Background="{TemplateBinding Background}"
                                    BorderBrush="{TemplateBinding BorderBrush}"
                                    BorderThickness="{TemplateBinding BorderThickness}"
                                    Padding="{TemplateBinding Padding}"
                                    CornerRadius="5">
                                <Grid>
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="*" />
                                        <ColumnDefinition Width="Auto" />
                                    </Grid.ColumnDefinitions>
                                    <TextBlock Grid.Column="0"
                                               Text="{TemplateBinding Content}"
                                               Foreground="{TemplateBinding Foreground}"
                                               HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                               VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                               TextTrimming="CharacterEllipsis" />
                                    <TextBlock Grid.Column="1"
                                               Text="▼"
                                               FontSize="{TemplateBinding FontSize}"
                                               Margin="5 0 0 0"
                                               Foreground="{TemplateBinding Foreground}"
                                               VerticalAlignment="Center" />
                                </Grid>
                            </Border>
                            <ControlTemplate.Triggers>
                                <Trigger Property="IsMouseOver"
                                         Value="True">
                                    <Setter Property="Background"
                                            Value="{DynamicResource Background}" />
                                    <Setter Property="Foreground"
                                            Value="{DynamicResource GlobalSecondary}" />
                                    <Setter Property="BorderBrush"
                                            Value="{DynamicResource GlobalSecondary}" />
                                    <Setter Property="BorderThickness"
                                            Value="1.5" />
                                    <Setter Property="Padding"
                                            Value="9 0" />
                                </Trigger>
                                <Trigger Property="IsChecked"
                                         Value="True">
                                    <Setter Property="Opacity"
                                            Value="0.85" />
                                </Trigger>
                                <Trigger Property="IsEnabled"
                                         Value="False">
                                    <Setter Property="Foreground"
                                            Value="{DynamicResource ButtonDisabledForeground}" />
                                    <Setter Property="Background"
                                            Value="{DynamicResource ButtonDisabledBackground}" />
                                    <Setter Property="BorderBrush"
                                            Value="{DynamicResource ButtonDisabledBorder}" />
                                </Trigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>

            <!-- Dropdown menu container -->
            <Style x:Key="DropdownComboBoxItem"
                   TargetType="ComboBoxItem">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding IsSeparator}"
                                 Value="True">
                        <Setter Property="IsEnabled"
                                Value="False" />
                    </DataTrigger>
                </Style.Triggers>
                <Setter Property="Background"
                        Value="{DynamicResource Background}" />
                <Setter Property="Foreground"
                        Value="{DynamicResource GlobalPrimary}" />
                <Setter Property="Margin"
                        Value="0" />
                <Setter Property="Padding"
                        Value="20 8" />
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="ComboBoxItem">
                            <Border x:Name="Border"
                                    Padding="{TemplateBinding Padding}"
                                    Background="{TemplateBinding Background}"
                                    CornerRadius="10"
                                    ClipToBounds="True">
                                <ContentPresenter />
                            </Border>
                            <!-- Make separator unable to be selected or focused -->
                            <ControlTemplate.Triggers>
                                <Trigger Property="IsMouseOver"
                                         Value="True">
                                    <Setter Property="Foreground"
                                            Value="{DynamicResource Background}" />
                                    <Setter Property="Background"
                                            Value="{DynamicResource GlobalSecondary}" />
                                </Trigger>
                                <Trigger Property="IsEnabled"
                                         Value="False">
                                    <Setter Property="Background"
                                            Value="Transparent" />
                                    <Setter Property="Padding"
                                            Value="0" />
                                </Trigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>

            <!-- Final styling of dropdown menu, combining above styles -->
            <Style x:Key="RoundedDropdownMenu"
                   TargetType="ComboBox">
                <Setter Property="ItemsPanel">
                    <Setter.Value>
                        <ItemsPanelTemplate>
                            <VirtualizingStackPanel />
                        </ItemsPanelTemplate>
                    </Setter.Value>
                </Setter>
                <Setter Property="ItemContainerStyle"
                        Value="{StaticResource DropdownComboBoxItem}" />
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="ComboBox">
                            <Grid>
                                <ToggleButton Style="{StaticResource DropdownToggleButton}"
                                              IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
                                              Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=SelectedItem.Title}"
                                              ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}"
                                              Width="{TemplateBinding Width}"
                                              Height="{TemplateBinding Height}" />
                                <Popup x:Name="PART_Popup"
                                       AllowsTransparency="True"
                                       Focusable="False"
                                       IsOpen="{TemplateBinding IsDropDownOpen}"
                                       Placement="Bottom"
                                       PopupAnimation="Fade">
                                    <Border x:Name="DropDownBorder"
                                            Background="{DynamicResource Background}"
                                            CornerRadius="10"
                                            BorderThickness="2"
                                            BorderBrush="{DynamicResource GlobalSecondary}"
                                            ClipToBounds="True">
                                        <ScrollViewer ClipToBounds="True">
                                            <ItemsPresenter />
                                        </ScrollViewer>
                                    </Border>
                                </Popup>
                            </Grid>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </ResourceDictionary>
    </Application.Resources>
</Application>