UnitConverter.xaml

<UserControl x:Class="CalculatorApp.UnitConverter"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:automation="using:CalculatorApp.ViewModel.Common.Automation"
             xmlns:common="using:CalculatorApp.Common"
             xmlns:contract7NotPresent="http://schemas.microsoft.com/winfx/2006/xaml/presentation?IsApiContractNotPresent(Windows.Foundation.UniversalApiContract,7)"
             xmlns:contract7Present="http://schemas.microsoft.com/winfx/2006/xaml/presentation?IsApiContractPresent(Windows.Foundation.UniversalApiContract,7)"
             xmlns:controls="using:CalculatorApp.Controls"
             xmlns:converters="using:CalculatorApp.Converters"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:local="using:CalculatorApp"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:muxc="using:Microsoft.UI.Xaml.Controls"
             xmlns:triggers="using:CalculatorApp.Views.StateTriggers"
             xmlns:vm="using:CalculatorApp.ViewModel"
             d:DesignHeight="658"
             d:DesignWidth="830"
             DataContextChanged="OnDataContextChanged"
             FlowDirection="LeftToRight"
             Loaded="OnLoaded"
             mc:Ignorable="d">

    <UserControl.Resources>
        <common:VisibilityNegationConverter x:Name="VisibilityNegationConverter"/>
        <common:AlwaysSelectedCollectionViewConverter x:Name="AlwaysSelectedConverter"/>
        <common:ValidSelectedItemConverter x:Name="ValidSelectedItemConverter"/>
        <converters:BooleanToVisibilityConverter x:Name="BooleanToVisibilityConverter"/>
        <converters:BooleanToVisibilityNegationConverter x:Name="BooleanToVisibilityNegationConverter"/>
        <automation:NarratorNotifier x:Name="NarratorNotifier" Announcement="{x:Bind Model.Announcement, Mode=OneWay}"/>

        <DataTemplate x:Key="UnitTemplate" x:DataType="vm:Unit">
            <TextBlock Style="{ThemeResource BodyTextBlockStyle}"
                       AutomationProperties.Name="{x:Bind AccessibleName}"
                       Text="{x:Bind Name}"
                       TextWrapping="NoWrap"/>
        </DataTemplate>

        <!-- Native bindings can't be use with this template, it will launch an exception when ComboxBox.SelectedItem == null -->
        <!-- if you switch between modes when no currencies are available for example) -->
        <DataTemplate x:Key="SelectedUnitTemplate">
            <TextBlock Style="{ThemeResource BodyTextBlockStyle}"
                       FontWeight="Normal"
                       AutomationProperties.Name="{Binding AccessibleName, Mode=OneTime, FallbackValue=''}"
                       Text="{Binding Name, Mode=OneTime, FallbackValue=''}"
                       TextWrapping="NoWrap"/>
        </DataTemplate>

        <Style x:Key="ComboStyle" TargetType="ComboBox">
            <Setter Property="Margin" Value="12,0,0,0"/>
            <Setter Property="Padding" Value="4,0,0,0"/>
            <Setter Property="MinHeight" Value="32"/>
            <Setter Property="Foreground" Value="{ThemeResource SystemControlForegroundBaseHighBrush}"/>
            <Setter Property="Background" Value="{ThemeResource SystemControlBackgroundTransparentBrush}"/>
            <Setter Property="BorderBrush" Value="{ThemeResource SystemControlForegroundBaseMediumLowBrush}"/>
            <Setter Property="BorderThickness" Value="{ThemeResource ControlBorderThemeThickness}"/>
            <Setter Property="TabNavigation" Value="Once"/>
            <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/>
            <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
            <Setter Property="ScrollViewer.HorizontalScrollMode" Value="Disabled"/>
            <Setter Property="ScrollViewer.VerticalScrollMode" Value="Auto"/>
            <Setter Property="ScrollViewer.IsVerticalRailEnabled" Value="True"/>
            <Setter Property="ScrollViewer.IsDeferredScrollingEnabled" Value="False"/>
            <Setter Property="ScrollViewer.BringIntoViewOnFocusChange" Value="True"/>
            <Setter Property="HorizontalContentAlignment" Value="Left"/>
            <Setter Property="HorizontalAlignment" Value="Stretch"/>
            <Setter Property="VerticalAlignment" Value="Top"/>
            <Setter Property="VerticalContentAlignment" Value="Center"/>
            <Setter Property="IsTextScaleFactorEnabled" Value="True"/>
            <Setter Property="UseSystemFocusVisuals" Value="True"/>
            <Setter Property="FocusVisualMargin" Value="-3"/>
            <Setter Property="ItemsPanel">
                <Setter.Value>
                    <ItemsPanelTemplate>
                        <CarouselPanel/>
                    </ItemsPanelTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ComboBox">
                        <Grid>
                            <VisualStateManager.VisualStateGroups>
                                <VisualStateGroup x:Name="CommonStates">
                                    <VisualState x:Name="Normal"/>
                                    <VisualState x:Name="PointerOver">
                                        <VisualState.Setters>
                                            <Setter Target="BackgroundElement.Background" Value="{ThemeResource SystemControlHighlightTransparentBrush}"/>
                                            <Setter Target="SelectedContentPresenter.Foreground" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}"/>
                                            <Setter Target="DropDownGlyph.Foreground" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                    <VisualState x:Name="Pressed">
                                        <VisualState.Setters>
                                            <Setter Target="BackgroundElement.Background" Value="{ThemeResource SystemControlHighlightTransparentBrush}"/>
                                            <Setter Target="SelectedContentPresenter.Foreground" Value="{ThemeResource SystemControlHighlightAltBaseMediumBrush}"/>
                                            <Setter Target="DropDownGlyph.Foreground" Value="{ThemeResource SystemControlHighlightAltBaseMediumBrush}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                    <VisualState x:Name="Disabled"/>
                                </VisualStateGroup>
                                <VisualStateGroup x:Name="DropDownStates">
                                    <VisualState x:Name="Opened">
                                        <Storyboard>
                                            <SplitOpenThemeAnimation ClosedTargetName="SelectedContentPresenter"
                                                                     OffsetFromCenter="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.DropDownOffset}"
                                                                     OpenedLength="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.DropDownOpenedHeight}"
                                                                     OpenedTargetName="PopupBorder"/>
                                        </Storyboard>
                                    </VisualState>
                                    <VisualState x:Name="Closed">
                                        <Storyboard>
                                            <SplitCloseThemeAnimation ClosedTargetName="SelectedContentPresenter"
                                                                      OffsetFromCenter="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.DropDownOffset}"
                                                                      OpenedLength="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.DropDownOpenedHeight}"
                                                                      OpenedTargetName="PopupBorder"/>
                                        </Storyboard>
                                    </VisualState>
                                </VisualStateGroup>
                            </VisualStateManager.VisualStateGroups>
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="Auto"/>
                                    <ColumnDefinition Width="*"/>
                                </Grid.ColumnDefinitions>
                                <Border x:Name="BackgroundElement"
                                        Grid.ColumnSpan="2"
                                        Background="{TemplateBinding Background}"
                                        BorderBrush="{TemplateBinding BorderBrush}"
                                        BorderThickness="{TemplateBinding BorderThickness}"
                                        contract7Present:CornerRadius="{TemplateBinding CornerRadius}"/>
                                <!--
                                    This first ContentPresenter must be named "ContentPresenter" because
                                    XAML expects it in the template and has dependencies. It is not used
                                    because we want to style the selected item differently than the items
                                    list but XAML forces the same style.  Do not remove
                                    this element.
                                -->
                                <ContentPresenter x:Name="ContentPresenter" Opacity="0"/>
                                <ContentPresenter x:Name="SelectedContentPresenter"
                                                  Margin="{TemplateBinding Padding}"
                                                  HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                                  VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                                  AutomationProperties.AccessibilityView="Raw"
                                                  Content="{TemplateBinding SelectedItem}"
                                                  ContentTemplate="{StaticResource SelectedUnitTemplate}"
                                                  FlowDirection="{TemplateBinding FlowDirection}"/>
                                <TextBlock x:Name="DropDownGlyph"
                                           Grid.Column="1"
                                           Margin="8,3,12,0"
                                           HorizontalAlignment="Left"
                                           VerticalAlignment="Center"
                                           Foreground="{ThemeResource SystemControlForegroundBaseHighBrush}"
                                           FontFamily="{StaticResource CalculatorFontFamily}"
                                           FontSize="12"
                                           AutomationProperties.AccessibilityView="Raw"
                                           IsHitTestVisible="False"
                                           Text="&#xE70D;"/>
                                <Popup x:Name="Popup">
                                    <Border x:Name="PopupBorder"
                                            Margin="0,-0.5,0,-1"
                                            Padding="{ThemeResource ComboBoxDropdownBorderPadding}"
                                            HorizontalAlignment="Stretch"
                                            Background="{ThemeResource ComboBoxDropDownBackground}"
                                            BorderBrush="{ThemeResource ComboBoxDropDownBorderBrush}"
                                            BorderThickness="{ThemeResource ComboBoxDropdownBorderThickness}"
                                            contract7Present:BackgroundSizing="InnerBorderEdge"
                                            CornerRadius="{ThemeResource OverlayCornerRadius}">
                                        <ScrollViewer x:Name="ScrollViewer"
                                                      MinWidth="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.DropDownContentMinWidth}"
                                                      Foreground="{ThemeResource SystemControlForegroundBaseHighBrush}"
                                                      AutomationProperties.AccessibilityView="Raw"
                                                      BringIntoViewOnFocusChange="{TemplateBinding ScrollViewer.BringIntoViewOnFocusChange}"
                                                      HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
                                                      HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}"
                                                      IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}"
                                                      IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}"
                                                      IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}"
                                                      VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}"
                                                      VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}"
                                                      VerticalSnapPointsAlignment="Near"
                                                      VerticalSnapPointsType="OptionalSingle"
                                                      ZoomMode="Disabled">
                                            <ItemsPresenter/>
                                        </ScrollViewer>
                                    </Border>
                                </Popup>
                            </Grid>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <contract7NotPresent:Style x:Key="ConditionalComboStyle"
                                   BasedOn="{StaticResource ComboStyle}"
                                   TargetType="ComboBox"/>
        <contract7Present:Style x:Key="ConditionalComboStyle"
                                BasedOn="{StaticResource ComboStyle}"
                                TargetType="ComboBox">
            <Setter Property="CornerRadius" Value="{ThemeResource ControlCornerRadius}"/>
        </contract7Present:Style>

        <Style x:Key="ValueBaseStyle"
               BasedOn="{StaticResource ConditionalCalculationResultStyle}"
               TargetType="controls:CalculationResult">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="Foreground" Value="{ThemeResource SystemControlForegroundBaseHighBrush}"/>
            <Setter Property="HorizontalContentAlignment" Value="Left"/>
            <Setter Property="VerticalContentAlignment" Value="Bottom"/>
            <Setter Property="Margin" Value="4,0,0,0"/>
            <Setter Property="FontWeight" Value="Light"/>
            <Setter Property="MinFontSize" Value="{ThemeResource BodyFontSize}"/>
        </Style>
        <Style x:Key="ValueLargeStyle"
               BasedOn="{StaticResource ValueBaseStyle}"
               TargetType="controls:CalculationResult">
            <Setter Property="MaxFontSize" Value="46"/>
            <Setter Property="DisplayMargin" Value="0,0,0,12"/>
        </Style>
        <Style x:Key="ValueMediumStyle"
               BasedOn="{StaticResource ValueBaseStyle}"
               TargetType="controls:CalculationResult">
            <Setter Property="MaxFontSize" Value="40"/>
            <Setter Property="DisplayMargin" Value="0,0,0,4"/>
        </Style>
        <Style x:Key="CurrencySymbolBaseStyle" TargetType="TextBlock">
            <Setter Property="FontWeight" Value="Light"/>
            <Setter Property="HorizontalAlignment" Value="Left"/>
            <Setter Property="VerticalAlignment" Value="Bottom"/>
            <Setter Property="Foreground" Value="{ThemeResource SystemControlPageTextBaseHighBrush}"/>
        </Style>
        <Style x:Key="CurrencySymbolLargeStyle"
               BasedOn="{StaticResource CurrencySymbolBaseStyle}"
               TargetType="TextBlock">
            <Setter Property="FontSize" Value="32"/>
            <Setter Property="Margin" Value="0,0,0,17"/>
        </Style>
        <Style x:Key="CurrencySymbolMediumStyle"
               BasedOn="{StaticResource CurrencySymbolBaseStyle}"
               TargetType="TextBlock">
            <Setter Property="FontSize" Value="20"/>
            <Setter Property="Margin" Value="0,0,0,8"/>
        </Style>
        <Style x:Key="CurrencySymbolSmallStyle"
               BasedOn="{StaticResource CurrencySymbolBaseStyle}"
               TargetType="TextBlock">
            <Setter Property="FontSize" Value="17"/>
            <Setter Property="Margin" Value="0,0,0,7"/>
        </Style>

        <Style x:Key="ValueContainerStyle" TargetType="Grid">
            <Setter Property="AutomationProperties.AccessibilityView" Value="Raw"/>
        </Style>

        <Storyboard x:Name="AnimationStory">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetName="ConverterNumPad" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleX)">
                <EasingDoubleKeyFrame KeyTime="0" Value="0.92">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <ExponentialEase EasingMode="EaseOut" Exponent="5"/>
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
                <EasingDoubleKeyFrame KeyTime="0:0:0.367" Value="1">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <ExponentialEase EasingMode="EaseOut" Exponent="5"/>
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetName="ConverterNumPad" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleY)">
                <EasingDoubleKeyFrame KeyTime="0" Value="0.92">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <ExponentialEase EasingMode="EaseOut" Exponent="5"/>
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
                <EasingDoubleKeyFrame KeyTime="0:0:0.367" Value="1">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <ExponentialEase EasingMode="EaseOut" Exponent="5"/>
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>

        <MenuFlyout x:Key="CalculationResultContextMenu">
            <MenuFlyoutItem x:Name="CopyMenuItem"
                            x:Uid="CopyMenuItem"
                            Click="OnCopyMenuItemClicked"
                            Icon="Copy"/>
            <MenuFlyoutItem x:Name="PasteMenuItem"
                            x:Uid="PasteMenuItem"
                            Click="OnPasteMenuItemClicked"
                            Icon="Paste"/>
        </MenuFlyout>
    </UserControl.Resources>

    <Grid x:Name="UnitConverterRootGrid"
          HorizontalAlignment="Stretch"
          AutomationProperties.LandmarkType="Main">
        <Grid.RowDefinitions>
            <RowDefinition x:Name="RowTopNav" Height="{StaticResource HamburgerHeightGridLength}"/>
            <RowDefinition x:Name="RowDisplay1"
                           Height="56*"
                           MinHeight="56"/>
            <RowDefinition x:Name="RowUnit1"
                           Height="32*"
                           MinHeight="32"/>
            <RowDefinition x:Name="RowDisplay2"
                           Height="56*"
                           MinHeight="56"/>
            <RowDefinition x:Name="RowUnit2"
                           Height="32*"
                           MinHeight="32"/>
            <RowDefinition x:Name="RowDltrUnits"
                           Height="Auto"
                           MinHeight="48"/>
            <RowDefinition x:Name="RowNumPad" Height="272*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition x:Name="GutterLeft" Width="0"/>
            <ColumnDefinition x:Name="ColumnLeft" Width="1*"/>
            <ColumnDefinition x:Name="ColumnRight" Width="0"/>
            <ColumnDefinition x:Name="GutterRight" Width="0"/>
        </Grid.ColumnDefinitions>
        <!-- End ConverterNumPad -->

        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="Layout">
                <VisualState x:Name="PortraitLayout"/>
                <VisualState x:Name="LandscapeLayout">
                    <VisualState.StateTriggers>
                        <triggers:AspectRatioTrigger ActiveIfEqual="True"
                                                     NumeratorAspect="Width"
                                                     Source="{x:Bind}"
                                                     Threshold="1"/>
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="GutterLeft.Width" Value="0"/>
                        <Setter Target="GutterRight.Width" Value="0"/>
                        <Setter Target="ColumnLeft.Width" Value="1*"/>
                        <Setter Target="ColumnRight.Width" Value="1*"/>
                        <Setter Target="RowDisplay1.Height" Value="4*"/>
                        <Setter Target="RowUnit1.Height" Value="2*"/>
                        <Setter Target="RowDisplay2.Height" Value="4*"/>
                        <Setter Target="RowUnit2.Height" Value="2*"/>
                        <Setter Target="RowDltrUnits.Height" Value="2*"/>
                        <Setter Target="CurrencyLoadingGrid.(Grid.ColumnSpan)" Value="2"/>
                        <Setter Target="ConverterNumPad.(Grid.Row)" Value="1"/>
                        <Setter Target="ConverterNumPad.(Grid.RowSpan)" Value="5"/>
                        <Setter Target="ConverterNumPad.(Grid.Column)" Value="2"/>
                        <Setter Target="ConverterNumPad.(Grid.ColumnSpan)" Value="2"/>
                        <Setter Target="SupplementaryResults.VerticalAlignment" Value="Top"/>
                        <Setter Target="RowNumPad.MinHeight" Value="0"/>
                        <Setter Target="RowNumPad.Height" Value="0"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="Sizing" CurrentStateChanged="OnVisualStateChanged">
                <VisualState x:Name="Wide">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowHeight="768" MinWindowWidth="1280"/>
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="Value1.Style" Value="{ThemeResource ValueLargeStyle}"/>
                        <Setter Target="Value2.Style" Value="{ThemeResource ValueLargeStyle}"/>
                        <Setter Target="CurrencySymbol1Block.Style" Value="{ThemeResource CurrencySymbolLargeStyle}"/>
                        <Setter Target="CurrencySymbol2Block.Style" Value="{ThemeResource CurrencySymbolLargeStyle}"/>
                        <Setter Target="Units1.Height" Value="44"/>
                        <Setter Target="Units2.Height" Value="44"/>
                        <Setter Target="ConverterNegateButton.FontSize" Value="24"/>
                        <Setter Target="ClearEntryButtonPos0.FontSize" Value="24"/>
                        <Setter Target="BackSpaceButtonSmall.FontSize" Value="24"/>
                        <Setter Target="NumberPad.ButtonStyle" Value="{StaticResource NumericButtonStyle46}"/>
                    </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="Wide640">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowHeight="0" MinWindowWidth="640"/>
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="Value1.Style" Value="{ThemeResource ValueLargeStyle}"/>
                        <Setter Target="Value2.Style" Value="{ThemeResource ValueLargeStyle}"/>
                        <Setter Target="CurrencySymbol1Block.Style" Value="{ThemeResource CurrencySymbolLargeStyle}"/>
                        <Setter Target="CurrencySymbol2Block.Style" Value="{ThemeResource CurrencySymbolLargeStyle}"/>
                        <Setter Target="Units1.Height" Value="44"/>
                        <Setter Target="Units2.Height" Value="44"/>
                        <Setter Target="ConverterNegateButton.FontSize" Value="{StaticResource CalcStandardOperatorCaptionSize}"/>
                        <Setter Target="ClearEntryButtonPos0.FontSize" Value="{StaticResource CalcStandardOperatorCaptionSize}"/>
                        <Setter Target="BackSpaceButtonSmall.FontSize" Value="{StaticResource CalcStandardOperatorCaptionSize}"/>
                        <Setter Target="NumberPad.ButtonStyle" Value="{StaticResource NumericButtonStyle28}"/>
                    </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="MinSizeLayout">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowHeight="{StaticResource AppMinWindowHeight}" MinWindowWidth="{StaticResource AppMinWindowWidth}"/>
                    </VisualState.StateTriggers>
                </VisualState>
                <VisualState x:Name="DefaultLayout">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowHeight="0" MinWindowWidth="0"/>
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="ClearEntryButtonPos0.Margin" Value="1"/>
                        <Setter Target="BackSpaceButtonSmall.Margin" Value="1"/>
                        <Setter Target="ConverterNegateButton.Margin" Value="1"/>

                        <Setter Target="NumberPad.ButtonStyle" Value="{StaticResource NumericButtonStyle18}"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="CurrencyTimestampStates">
                <VisualState x:Name="DefaultTimestamp">
                    <VisualState.Setters>
                        <Setter Target="CurrencyTimestampTextBlock.Foreground" Value="{ThemeResource SystemControlPageTextBaseHighBrush}"/>
                        <Setter Target="CurrencyTimestampTextBlock.FontWeight" Value="Normal"/>
                    </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="WeekOldTimestamp">
                    <VisualState.Setters>
                        <Setter Target="CurrencyTimestampTextBlock.Foreground" Value="{ThemeResource AppControlPageTextRedColorBrush}"/>
                        <Setter Target="CurrencyTimestampTextBlock.FontWeight" Value="SemiBold"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="CurrencySecondaryStatusStates">
                <VisualState x:Name="ChargesMayApplyCurrencyStatus">
                    <VisualState.Setters>
                        <Setter Target="CurrencySecondaryStatus.Foreground" Value="{ThemeResource AppControlPageTextBaseHighColorBrush}"/>
                    </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="FailedCurrencyStatus">
                    <VisualState.Setters>
                        <Setter Target="CurrencySecondaryStatus.Foreground" Value="{ThemeResource AppControlPageTextRedColorBrush}"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="CurrencySymbolStates">
                <VisualState x:Name="CurrencySymbolLeftState"/>
                <VisualState x:Name="CurrencySymbolRightState">
                    <VisualState.Setters>
                        <Setter Target="CurrencySymbol1Block.Padding" Value="0,0,12,0"/>
                        <Setter Target="CurrencySymbol2Block.Padding" Value="0,0,12,0"/>
                        <Setter Target="CurrencySymbol1Block.(Grid.Column)" Value="2"/>
                        <Setter Target="CurrencySymbol2Block.(Grid.Column)" Value="2"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="UnitLoadedStates">
                <VisualStateGroup.Transitions>
                    <VisualTransition From="UnitNotLoadedState" To="UnitLoadedState">
                        <Storyboard>
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Units1" Storyboard.TargetProperty="Visibility">
                                <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Visible"/>
                            </ObjectAnimationUsingKeyFrames>
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Value1Container" Storyboard.TargetProperty="Visibility">
                                <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Visible"/>
                            </ObjectAnimationUsingKeyFrames>
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Units2" Storyboard.TargetProperty="Visibility">
                                <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Visible"/>
                            </ObjectAnimationUsingKeyFrames>
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Value2Container" Storyboard.TargetProperty="Visibility">
                                <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="Visible"/>
                            </ObjectAnimationUsingKeyFrames>
                            <DoubleAnimation Duration="0:0:1"
                                             From="0"
                                             Storyboard.TargetName="CurrencyRatioEqualityBlock"
                                             Storyboard.TargetProperty="Opacity"
                                             To="1"/>
                            <DoubleAnimation Duration="0:0:1"
                                             From="0"
                                             Storyboard.TargetName="CurrencyTimestampTextBlock"
                                             Storyboard.TargetProperty="Opacity"
                                             To="1"/>
                            <DoubleAnimation Duration="0:0:1"
                                             From="0"
                                             Storyboard.TargetName="Units1"
                                             Storyboard.TargetProperty="Opacity"
                                             To="1"/>
                            <DoubleAnimation Duration="0:0:1"
                                             From="0"
                                             Storyboard.TargetName="Value1Container"
                                             Storyboard.TargetProperty="Opacity"
                                             To="1"/>
                            <DoubleAnimation Duration="0:0:1"
                                             From="0"
                                             Storyboard.TargetName="Units2"
                                             Storyboard.TargetProperty="Opacity"
                                             To="1"/>
                            <DoubleAnimation Duration="0:0:1"
                                             From="0"
                                             Storyboard.TargetName="Value2Container"
                                             Storyboard.TargetProperty="Opacity"
                                             To="1"/>
                        </Storyboard>
                    </VisualTransition>
                </VisualStateGroup.Transitions>
                <VisualState x:Name="UnitNotLoadedState">
                    <VisualState.Setters>
                        <Setter Target="CurrencyRatioEqualityBlock.Opacity" Value="0"/>
                        <Setter Target="CurrencyTimestampTextBlock.Opacity" Value="0"/>
                        <Setter Target="CurrencyLoadingGrid.Visibility" Value="Visible"/>
                        <Setter Target="Units1.Visibility" Value="Collapsed"/>
                        <Setter Target="Value1Container.Visibility" Value="Collapsed"/>
                        <Setter Target="Units2.Visibility" Value="Collapsed"/>
                        <Setter Target="Value2Container.Visibility" Value="Collapsed"/>
                        <Setter Target="NumberPad.IsEnabled" Value="False"/>
                        <Setter Target="ClearEntryButtonPos0.IsEnabled" Value="False"/>
                        <Setter Target="BackSpaceButtonSmall.IsEnabled" Value="False"/>
                    </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="UnitLoadedState"/>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>

        <Grid x:Name="CurrencyLoadingGrid"
              Grid.Row="1"
              Grid.RowSpan="5"
              Grid.Column="0"
              Grid.ColumnSpan="4">
            <Grid.RowDefinitions>
                <RowDefinition Height="10*"/>
                <RowDefinition Height="7*"/>
                <RowDefinition Height="10*"/>
            </Grid.RowDefinitions>
            <muxc:ProgressRing x:Name="CurrencyLoadingProgressRing"
                               Grid.Row="1"
                               Grid.Column="1"
                               MaxWidth="140"
                               MaxHeight="140"
                               HorizontalAlignment="Stretch"
                               VerticalAlignment="Stretch"
                               IsActive="False"/>
        </Grid>

        <Grid x:Name="Value1Container"
              Grid.Row="1"
              Grid.Column="1"
              HorizontalAlignment="{x:Bind FlowDirectionHorizontalAlignment}"
              Style="{ThemeResource ValueContainerStyle}">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <TextBlock x:Name="CurrencySymbol1Block"
                       Grid.Column="0"
                       Padding="16,0,0,0"
                       Style="{ThemeResource CurrencySymbolMediumStyle}"
                       AutomationProperties.AccessibilityView="Raw"
                       Text="{x:Bind Model.CurrencySymbol1, Mode=OneWay}"
                       Visibility="{x:Bind Model.CurrencySymbolVisibility, Mode=OneWay}"/>
            <controls:CalculationResult x:Name="Value1"
                                        Grid.Column="1"
                                        Style="{ThemeResource ValueMediumStyle}"
                                        AutomationProperties.AutomationId="Value1"
                                        AutomationProperties.Name="{x:Bind Model.Value1AutomationName, Mode=OneWay}"
                                        ContextCanceled="OnContextCanceled"
                                        ContextRequested="OnContextRequested"
                                        DisplayValue="{x:Bind Model.Value1, Mode=OneWay}"
                                        FlowDirection="{x:Bind LayoutDirection}"
                                        IsActive="{Binding Value1Active, Mode=TwoWay}"
                                        KeyDown="OnValueKeyDown"
                                        Selected="OnValueSelected"
                                        TabIndex="1"/>
        </Grid>

        <ComboBox x:Name="Units1"
                  Grid.Row="2"
                  Grid.Column="1"
                  HorizontalAlignment="{x:Bind FlowDirectionHorizontalAlignment}"
                  Style="{ThemeResource ConditionalComboStyle}"
                  AutomationProperties.AutomationId="Units1"
                  AutomationProperties.Name="{x:Bind Model.Unit1AutomationName, Mode=OneWay}"
                  DropDownClosed="UpdateDropDownState"
                  DropDownOpened="UpdateDropDownState"
                  FlowDirection="{x:Bind LayoutDirection}"
                  IsEnabledChanged="Units1_IsEnabledChanged"
                  ItemTemplate="{StaticResource UnitTemplate}"
                  ItemsSource="{Binding Units, Converter={StaticResource AlwaysSelectedConverter}}"
                  SelectedItem="{Binding Unit1, Mode=TwoWay, Converter={StaticResource ValidSelectedItemConverter}}"
                  TabIndex="2"
                  IsEnabled="{Binding IsDropDownEnabled}"/>

        <Grid x:Name="Value2Container"
              Grid.Row="3"
              Grid.Column="1"
              HorizontalAlignment="{x:Bind FlowDirectionHorizontalAlignment}"
              Style="{ThemeResource ValueContainerStyle}">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <TextBlock x:Name="CurrencySymbol2Block"
                       Grid.Column="0"
                       Padding="16,0,0,0"
                       Style="{ThemeResource CurrencySymbolMediumStyle}"
                       AutomationProperties.AccessibilityView="Raw"
                       Text="{x:Bind Model.CurrencySymbol2, Mode=OneWay}"
                       Visibility="{x:Bind Model.CurrencySymbolVisibility, Mode=OneWay}"/>
            <controls:CalculationResult x:Name="Value2"
                                        Grid.Column="1"
                                        Style="{ThemeResource ValueMediumStyle}"
                                        AutomationProperties.AutomationId="Value2"
                                        AutomationProperties.LiveSetting="Polite"
                                        AutomationProperties.Name="{x:Bind Model.Value2AutomationName, Mode=OneWay}"
                                        ContextCanceled="OnContextCanceled"
                                        ContextRequested="OnContextRequested"
                                        DisplayValue="{x:Bind Model.Value2, Mode=OneWay}"
                                        FlowDirection="{x:Bind LayoutDirection}"
                                        IsActive="{Binding Value2Active, Mode=TwoWay}"
                                        KeyDown="OnValueKeyDown"
                                        Selected="OnValueSelected"
                                        TabIndex="3"/>
        </Grid>

        <ComboBox x:Name="Units2"
                  Grid.Row="4"
                  Grid.Column="1"
                  HorizontalAlignment="{x:Bind FlowDirectionHorizontalAlignment}"
                  Style="{ThemeResource ConditionalComboStyle}"
                  AutomationProperties.AutomationId="Units2"
                  AutomationProperties.Name="{x:Bind Model.Unit2AutomationName, Mode=OneWay}"
                  DropDownClosed="UpdateDropDownState"
                  DropDownOpened="UpdateDropDownState"
                  FlowDirection="{x:Bind LayoutDirection}"
                  ItemTemplate="{StaticResource UnitTemplate}"
                  ItemsSource="{Binding Units, Converter={StaticResource AlwaysSelectedConverter}}"
                  SelectedItem="{Binding Unit2, Mode=TwoWay, Converter={StaticResource ValidSelectedItemConverter}}"
                  TabIndex="4"
                  IsEnabled="{Binding IsDropDownEnabled}"/>

        <StackPanel x:Name="SupplementaryResultsPanelInGrid"
                    Grid.Row="5"
                    Grid.Column="1"
                    MinHeight="48"
                    Padding="0,0,6,0"
                    HorizontalAlignment="{x:Bind FlowDirectionHorizontalAlignment}"
                    VerticalAlignment="Top"
                    FlowDirection="{x:Bind LayoutDirection}"
                    SizeChanged="SupplementaryResultsPanelInGrid_SizeChanged">
            <local:SupplementaryResults x:Name="SupplementaryResults"
                                        HorizontalAlignment="Left"
                                        VerticalAlignment="Center"
                                        Results="{x:Bind Model.SupplementaryResults, Mode=OneWay}"
                                        Visibility="{x:Bind Model.SupplementaryVisibility, Mode=OneWay}"/>
            <StackPanel Visibility="{x:Bind Model.IsCurrencyCurrentCategory, Mode=OneWay, Converter={StaticResource BooleanToVisibilityConverter}}">
                <!-- Currency Ratio Equality -->
                <TextBlock x:Name="CurrencyRatioEqualityBlock"
                           Margin="16,0,0,0"
                           Style="{ThemeResource CaptionTextBlockStyle}"
                           Foreground="{ThemeResource SystemControlPageTextBaseMediumBrush}"
                           AutomationProperties.Name="{x:Bind Model.CurrencyRatioEqualityAutomationName, Mode=OneWay}"
                           Text="{x:Bind Model.CurrencyRatioEquality, Mode=OneWay}"/>

                <!-- Currency Timestamp -->
                <TextBlock x:Name="CurrencyTimestampTextBlock"
                           Margin="16,0,0,0"
                           Style="{ThemeResource CaptionTextBlockStyle}"
                           Foreground="{ThemeResource SystemControlPageTextBaseMediumBrush}"
                           Text="{x:Bind Model.CurrencyTimestamp, Mode=OneWay}"/>

                <!-- Currency Refresh button and additional status text -->
                <ContentControl x:Name="CurrencyRefreshBlockControl"
                                IsTabStop="False"
                                TabIndex="5"
                                Visibility="Collapsed">
                    <StackPanel Orientation="Horizontal">
                        <HyperlinkButton x:Name="CurrencyRefreshBlock"
                                         x:Uid="RefreshButtonText"
                                         Margin="16,4,0,0"
                                         Padding="0"
                                         Foreground="{ThemeResource AccentTextFillColorPrimaryBrush}"
                                         BorderThickness="0"
                                         Click="CurrencyRefreshButton_Click">
                            <HyperlinkButton.Resources>
                                <ResourceDictionary>
                                    <StaticResource x:Key="HyperlinkButtonBackgroundPointerOver" ResourceKey="SubtleFillColorTransparentBrush"/>
                                    <StaticResource x:Key="HyperlinkButtonBackgroundPressed" ResourceKey="SubtleFillColorTransparentBrush"/>
                                </ResourceDictionary>
                            </HyperlinkButton.Resources>
                        </HyperlinkButton>
                        <TextBlock Margin="3,6,0,0" Style="{ThemeResource CaptionTextBlockStyle}">
                            <Run x:Name="CurrencySecondaryStatus"
                                 Text=""/>
                        </TextBlock>
                    </StackPanel>
                </ContentControl>

                <!-- Offline TextBlock -->
                <ContentControl x:Name="OfflineBlock"
                                Margin="16,4,0,0"
                                IsTabStop="False"
                                TabIndex="5"
                                Visibility="Collapsed">
                    <TextBlock Style="{ThemeResource CaptionTextBlockStyle}"
                               Foreground="{ThemeResource SystemControlPageTextBaseHighBrush}"
                               AutomationProperties.AccessibilityView="Raw">
                        <Run x:Name="OfflineRunBeforeLink"/>
                        <Hyperlink NavigateUri="ms-settings:network-status">
                            <Run x:Name="OfflineRunLink"/>
                        </Hyperlink>
                        <Run x:Name="OfflineRunAfterLink"/>
                    </TextBlock>
                </ContentControl>
            </StackPanel>
        </StackPanel>

        <Grid x:Name="ConverterNumPad"
              Grid.Row="6"
              Grid.Column="1"
              Margin="3,0,3,3"
              FlowDirection="LeftToRight"
              RenderTransformOrigin="0.5,0.5"
              XYFocusKeyboardNavigation="Enabled">
            <Grid.RenderTransform>
                <CompositeTransform/>
            </Grid.RenderTransform>
            <Grid.RowDefinitions>
                <RowDefinition Height="1*"/>
                <RowDefinition Height="1*"/>
                <RowDefinition Height="1*"/>
                <RowDefinition Height="1*"/>
                <RowDefinition Height="1*"/>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="1*"/>
                <ColumnDefinition Width="1*"/>
                <ColumnDefinition Width="1*"/>
            </Grid.ColumnDefinitions>
            <Grid x:Uid="DisplayControls"
                  Grid.Row="0"
                  Grid.Column="1"
                  Grid.ColumnSpan="2"
                  AutomationProperties.HeadingLevel="Level1">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                </Grid.ColumnDefinitions>
                <controls:CalculatorButton x:Name="ClearEntryButtonPos0"
                                           x:Uid="clearEntryButton"
                                           HorizontalAlignment="Stretch"
                                           Style="{StaticResource OperatorButtonStyle}"
                                           FontSize="14"
                                           ButtonId="Clear"
                                           Content="CE"
                                           TabIndex="7"/>
                <controls:CalculatorButton x:Name="BackSpaceButtonSmall"
                                           x:Uid="backSpaceButton"
                                           Grid.Column="1"
                                           Style="{StaticResource SymbolOperatorButtonStyle}"
                                           FontSize="14"
                                           ButtonId="Backspace"
                                           Content="&#xE94F;"
                                           TabIndex="8"/>
            </Grid>

            <local:NumberPad x:Name="NumberPad"
                             x:Uid="NumberPad"
                             Grid.Row="1"
                             Grid.RowSpan="4"
                             Grid.Column="0"
                             Grid.ColumnSpan="3"
                             VerticalAlignment="Stretch"
                             AutomationProperties.HeadingLevel="Level1"
                             ButtonStyle="{StaticResource NumericButtonStyle18}"
                             TabIndex="10"
                             TabNavigation="Local"/>
            <controls:CalculatorButton x:Name="ConverterNegateButton"
                                       x:Uid="converterNegateButton"
                                       Grid.Row="4"
                                       Grid.Column="0"
                                       Style="{StaticResource SymbolOperatorKeypadButtonStyle}"
                                       FontSize="16"
                                       ButtonId="Negate"
                                       Content="&#xF898;"
                                       TabIndex="6"
                                       Visibility="{x:Bind Model.CurrentCategory.NegateVisibility, Mode=OneWay}"/>
        </Grid>
        <!-- End ConverterNumPad -->
    </Grid>
</UserControl>