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Add AP to control TabControl Headers behavior #3952

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Merged
merged 1 commit into from
Oct 26, 2025
Merged

Add AP to control TabControl Headers behavior #3952

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6 changes: 4 additions & 2 deletions src/MainDemo.Wpf/Domain/TabsViewModel.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,10 @@

namespace MaterialDesignDemo.Domain;

internal class TabsViewModel : ViewModelBase
internal partial class TabsViewModel : ObservableObject
{
public ObservableCollection<CustomTab> CustomTabs { get; }

public List<int> LongList { get; }
public CustomTab? SelectedTab { get; set; }

public string? VeryLongText { get; set; } = @"
Expand Down Expand Up @@ -47,6 +47,8 @@ public TabsViewModel()
CustomContent = "Custom content 3",
},
};

LongList = Enumerable.Range(1, 20).ToList();
}

}
Expand Down
82 changes: 82 additions & 0 deletions src/MainDemo.Wpf/Tabs.xaml
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Original file line number Diff line number Diff line change
Expand Up @@ -755,5 +755,87 @@
</materialDesign:Card>
</smtx:XamlDisplay>

<Border Width="720"
BorderBrush="{DynamicResource MaterialDesign.Brush.Primary}"
BorderThickness="1">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" MinWidth="50" />
<ColumnDefinition Width="2" />
<ColumnDefinition Width="*" MinWidth="50" />
</Grid.ColumnDefinitions>

<materialDesign:ColorZone Grid.ColumnSpan="2"
Padding="8"
Mode="PrimaryMid">
<TextBlock Text="materialDesign:TabAssist.HeaderBehavior=&quot;Scrolling&quot;" />
</materialDesign:ColorZone>

<materialDesign:ColorZone Grid.Column="2"
Padding="8"
Mode="PrimaryMid">
<TextBlock Text="materialDesign:TabAssist.HeaderBehavior=&quot;Wrapping&quot;" />
</materialDesign:ColorZone>

<smtx:XamlDisplay Grid.Row="1"
Grid.Column="0"
Margin="16"
UniqueKey="tabs_tabAssist_1">
<TabControl materialDesign:TabAssist.HeaderBehavior="Scrolling"
ItemsSource="{Binding LongList}"
Style="{StaticResource MaterialDesignTabControl}">
<TabControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ., StringFormat=Header {0}}" />
</StackPanel>
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<TextBlock Margin="10"
FontSize="18"
Text="{Binding ., StringFormat=Content {0}}" />
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</smtx:XamlDisplay>

<GridSplitter Grid.RowSpan="2"
Grid.Column="1"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch" />

<smtx:XamlDisplay Grid.Row="1"
Grid.Column="2"
Margin="16"
UniqueKey="tabs_tabAssist_2">
<TabControl materialDesign:TabAssist.HeaderBehavior="Wrapping"
ItemsSource="{Binding LongList}"
Style="{StaticResource MaterialDesignTabControl}">
<TabControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ., StringFormat=Header {0}}" />
</StackPanel>
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<TextBlock Margin="10"
FontSize="18"
Text="{Binding ., StringFormat=Content {0}}" />
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</smtx:XamlDisplay>

</Grid>
</Border>

</StackPanel>
</UserControl>
15 changes: 15 additions & 0 deletions src/MaterialDesignThemes.Wpf/TabAssist.cs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,10 @@
namespace MaterialDesignThemes.Wpf;

public enum TabControlHeaderBehavior
{
Scrolling,
Wrapping
}
public static class TabAssist
{
public static readonly DependencyProperty HasFilledTabProperty = DependencyProperty.RegisterAttached(
Expand Down Expand Up @@ -54,4 +59,14 @@ public static void SetTabHeaderCursor(DependencyObject obj, Cursor value)

public static readonly DependencyProperty TabHeaderCursorProperty =
DependencyProperty.RegisterAttached("TabHeaderCursor", typeof(Cursor), typeof(TabAssist), new PropertyMetadata(Cursors.Hand));

public static TabControlHeaderBehavior GetHeaderBehavior(DependencyObject obj)
=> (TabControlHeaderBehavior)obj.GetValue(HeaderBehaviorProperty);

public static void SetHeaderBehavior(DependencyObject obj, TabControlHeaderBehavior value)
=> obj.SetValue(HeaderBehaviorProperty, value);

public static readonly DependencyProperty HeaderBehaviorProperty =
DependencyProperty.RegisterAttached("HeaderBehavior", typeof(TabControlHeaderBehavior), typeof(TabAssist),
new PropertyMetadata(TabControlHeaderBehavior.Scrolling));
}
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