WhisperWindow.xaml

<Controls:MetroWindow x:Class="BusinessCats.WhisperWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
        xmlns:local="clr-namespace:BusinessCats"
        mc:Ignorable="d"
        TitleCaps="False"
        WindowTransitionsEnabled="False"
        GlowBrush="{DynamicResource AccentColorBrush}"
        SnapsToDevicePixels="True"
        Title="Whispering" Height="420" Width="360" Icon="Resources/partycats.ico">
    <DockPanel>
        <Viewbox DockPanel.Dock="Top" Stretch="Uniform" Height="32" MinHeight="32">
            <TextBlock x:Name="textBlock" HorizontalAlignment="Center" TextWrapping="Wrap" VerticalAlignment="Top" FontSize="18.667" TextAlignment="Center"/>
        </Viewbox>
            <!--<TextBox x:Name="tbMessage" />-->
        <TextBox x:Name="tbMessage" DockPanel.Dock="Bottom" Margin="0, 4, 0, 0"
                         Controls:TextBoxHelper.Watermark="send a whisper..."
                         Controls:TextBoxHelper.ButtonContent="8"
                         Controls:TextBoxHelper.ButtonCommand="{Binding SendMessageCmd, Mode=OneWay }"
                         Style="{DynamicResource MetroButtonTextBox}">
            <TextBox.InputBindings>
                <KeyBinding Command="{Binding SendMessageCmd, Mode=OneWay }" Key="Enter" />
            </TextBox.InputBindings>
        </TextBox>

        <ListBox x:Name="lbWhispers" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
            <ListBox.ItemContainerStyle>
                <Style TargetType="ListBoxItem">
                    <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
                </Style>
            </ListBox.ItemContainerStyle>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock x:Name="message" Text="{Binding Path=Text}" TextWrapping="Wrap" ToolTip="{Binding Path=CipherText}"/>
                    <DataTemplate.Triggers>
                        <DataTrigger Binding="{Binding Path=IsSelf}" Value="True">
                            <Setter TargetName="message" Property="TextAlignment" Value="Right"/>
                            <Setter TargetName="message" Property="Foreground" Value="{DynamicResource GrayBrush2}"/>
                            <!--<Setter TargetName="message" Property="Background" Value="{DynamicResource GrayBrush10}"/>-->
                        </DataTrigger>
                    </DataTemplate.Triggers>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </DockPanel>
</Controls:MetroWindow>