Themes/MaterialDesignTheme.ValidationErrorTemplate.xaml
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<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:converters="clr-namespace:MaterialDesignThemes.Wpf.Converters" xmlns:wpf="clr-namespace:MaterialDesignThemes.Wpf"> <ControlTemplate x:Key="MaterialDesignValidationErrorTemplate"> <ControlTemplate.Resources> <converters:ThicknessCloneConverter x:Key="FloatingHintValidationErrorTextMarginConverter" CloneEdges="Left" /> <converters:ThicknessCloneConverter x:Key="FilledValidationErrorTextMarginConverter" CloneEdges="Left" FixedBottom="2" FixedTop="2" /> <converters:ThicknessCloneConverter x:Key="OutlinedValidationErrorTextMarginConverter" CloneEdges="Left" FixedTop="2" /> <DataTemplate DataType="{x:Type ValidationError}"> <TextBlock MaxWidth="{Binding ElementName=Placeholder, Path=ActualWidth}" Margin="2" HorizontalAlignment="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.HorizontalAlignment)}" FontSize="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.FontSize)}" Foreground="{DynamicResource MaterialDesign.Brush.ValidationError}" Text="{Binding ErrorContent, Mode=OneTime}" TextWrapping="Wrap" UseLayoutRounding="false" /> </DataTemplate> </ControlTemplate.Resources> <StackPanel> <AdornedElementPlaceholder Name="Placeholder" /> <Border x:Name="DefaultErrorViewer" Margin="{Binding ElementName=Placeholder, Path=AdornedElement.Padding, Converter={StaticResource FloatingHintValidationErrorTextMarginConverter}}" Background="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.Background)}" Visibility="Collapsed"> <TextBlock MaxWidth="{Binding ElementName=Placeholder, Path=ActualWidth}" Margin="0,2" HorizontalAlignment="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.HorizontalAlignment)}" FontSize="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.FontSize)}" Foreground="{DynamicResource MaterialDesign.Brush.ValidationError}" Text="{Binding /ErrorContent, Mode=OneTime}" TextWrapping="Wrap" UseLayoutRounding="false" /> </Border> <wpf:PopupEx x:Name="ValidationPopup" AllowsTransparency="True" IsOpen="False" Placement="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.PopupPlacement)}" PlacementTarget="{Binding ElementName=Placeholder, Mode=OneWay}"> <Border x:Name="PopupBorder" Background="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.Background)}"> <TextBlock Margin="0,2" HorizontalAlignment="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.HorizontalAlignment)}" FontSize="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.FontSize)}" Foreground="{DynamicResource MaterialDesign.Brush.ValidationError}" Text="{Binding /ErrorContent, Mode=OneTime}" TextWrapping="Wrap" UseLayoutRounding="false" /> </Border> </wpf:PopupEx> </StackPanel> <ControlTemplate.Triggers> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.OnlyShowOnFocus)}" Value="False" /> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.UsePopup)}" Value="True" /> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.Suppress)}" Value="False" /> </MultiDataTrigger.Conditions> <MultiDataTrigger.Setters> <Setter TargetName="ValidationPopup" Property="IsOpen" Value="True" /> </MultiDataTrigger.Setters> </MultiDataTrigger> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.OnlyShowOnFocus)}" Value="False" /> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.UsePopup)}" Value="False" /> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.Suppress)}" Value="False" /> </MultiDataTrigger.Conditions> <MultiDataTrigger.Setters> <Setter TargetName="DefaultErrorViewer" Property="Visibility" Value="Visible" /> </MultiDataTrigger.Setters> </MultiDataTrigger> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.OnlyShowOnFocus)}" Value="True" /> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.UsePopup)}" Value="True" /> </MultiDataTrigger.Conditions> <MultiDataTrigger.Setters> <Setter TargetName="ValidationPopup" Property="IsOpen" Value="{Binding ElementName=Placeholder, Path=AdornedElement.IsKeyboardFocusWithin, Mode=OneWay}" /> </MultiDataTrigger.Setters> </MultiDataTrigger> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.OnlyShowOnFocus)}" Value="True" /> <Condition Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.UsePopup)}" Value="False" /> </MultiDataTrigger.Conditions> <MultiDataTrigger.Setters> <Setter TargetName="DefaultErrorViewer" Property="Visibility" Value="{Binding ElementName=Placeholder, Path=AdornedElement.IsKeyboardFocusWithin, Mode=OneWay, Converter={x:Static converters:BooleanToVisibilityConverter.CollapsedInstance}}" /> </MultiDataTrigger.Setters> </MultiDataTrigger> <DataTrigger Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:ValidationAssist.Background)}" Value="{x:Null}"> <Setter TargetName="DefaultErrorViewer" Property="Background" Value="{DynamicResource MaterialDesign.Brush.Background}" /> <Setter TargetName="PopupBorder" Property="Background" Value="{DynamicResource MaterialDesign.Brush.Background}" /> </DataTrigger> <DataTrigger Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:TextFieldAssist.HasOutlinedTextField)}" Value="True"> <Setter TargetName="DefaultErrorViewer" Property="Margin" Value="{Binding ElementName=Placeholder, Path=AdornedElement.Padding, Converter={StaticResource OutlinedValidationErrorTextMarginConverter}}" /> <Setter TargetName="ValidationPopup" Property="VerticalOffset" Value="2" /> </DataTrigger> <DataTrigger Binding="{Binding ElementName=Placeholder, Path=AdornedElement.(wpf:TextFieldAssist.HasFilledTextField)}" Value="True"> <Setter TargetName="DefaultErrorViewer" Property="Margin" Value="{Binding ElementName=Placeholder, Path=AdornedElement.Padding, Converter={StaticResource OutlinedValidationErrorTextMarginConverter}}" /> </DataTrigger> </ControlTemplate.Triggers> </ControlTemplate> </ResourceDictionary> |