remove CustomValidationPopup and use PopupEx

Author: punker76

MaterialDesignThemes.Wpf/CustomValidationPopup.cs

@@ -222,7 +222,6 @@
     <Compile Include="Converters\ShadowConverter.cs" />
     <Compile Include="Converters\SizeToRectConverter.cs" />
     <Compile Include="CustomPopupPlacementCallbackHelper.cs" />
-    <Compile Include="CustomValidationPopup.cs" />
     <Compile Include="DataGridAssist.cs" />
     <Compile Include="DateTimeEx.cs" />
     <Compile Include="DialogClosingEventArgs.cs" />

MaterialDesignThemes.Wpf/MaterialDesignThemes.Wpf.csproj

@@ -1,6 +1,7 @@
 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-                    xmlns:wpf="clr-namespace:MaterialDesignThemes.Wpf">
+                    xmlns:wpf="clr-namespace:MaterialDesignThemes.Wpf"
+                    xmlns:controlz="clr-namespace:Controlz">
     <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
 
     <ControlTemplate x:Key="MaterialDesignValidationErrorTemplate">
@@ -23,14 +24,15 @@
                 <ContentPresenter Content="{Binding CurrentItem}" />
             </Border>
 
-            <wpf:CustomValidationPopup x:Name="ValidationPopup"
-                                       IsOpen="False"
-                                       Placement="Bottom" PlacementTarget="{Binding ElementName=Placeholder}"
-                                       AllowsTransparency="True">
+            <controlz:PopupEx x:Name="ValidationPopup"
+                              IsOpen="False"
+                              Placement="Bottom"
+                              PlacementTarget="{Binding ElementName=Placeholder, Mode=OneWay}"
+                              AllowsTransparency="True">
                 <Border Background="{DynamicResource MaterialDesignPaper}">
                     <ContentPresenter Content="{Binding CurrentItem}" />
                 </Border>
-            </wpf:CustomValidationPopup>
+            </controlz:PopupEx>
         </StackPanel>
         <ControlTemplate.Triggers>
             <MultiDataTrigger>