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‎src/Files.App.Controls/BreadcrumbBar/BreadcrumbBar.Properties.cs‎

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// Copyright (c) Files Community
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// Licensed under the MIT License.
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using CommunityToolkit.WinUI;
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using Microsoft.UI;
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using Microsoft.UI.Xaml;
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using Microsoft.UI.Xaml.Controls;
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using Microsoft.UI.Xaml.Input;
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using Microsoft.UI.Xaml.Markup;
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using Microsoft.UI.Xaml.Media;
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using Microsoft.UI.Xaml.Shapes;
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namespace Files.App.Controls
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{
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public sealed partial class BreadcrumbBar : Control
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{
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[GeneratedDependencyProperty]
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public partial object? ItemsSource { get; set; }
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[GeneratedDependencyProperty]
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public partial object? ItemTemplate { get; set; }
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partial void OnItemsSourceChanged(object? newValue)
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{
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}
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partial void OnItemTemplateChanged(object? newValue)
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{
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}
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}
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}

‎src/Files.App.Controls/BreadcrumbBar/BreadcrumbBar.cs‎

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// Copyright (c) Files Community
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// Licensed under the MIT License.
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using CommunityToolkit.WinUI;
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using Microsoft.UI;
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using Microsoft.UI.Xaml;
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using Microsoft.UI.Xaml.Controls;
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using Microsoft.UI.Xaml.Input;
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using Microsoft.UI.Xaml.Markup;
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using Microsoft.UI.Xaml.Media;
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using Microsoft.UI.Xaml.Shapes;
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using System;
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using Windows.Foundation;
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namespace Files.App.Controls
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{
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// Template parts
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[TemplatePart(Name = "PART_ItemsRepeater", Type = typeof(ItemsRepeater))]
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public sealed partial class BreadcrumbBar : Control
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{
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// Constants
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private const string _itemsRepeaterName = "PART_RootItemsRepeater";
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// Fields
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private ItemsRepeater _itemsRepeater = null!;
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private BreadcrumbBarLayout _itemsRepeaterLayout = null!;
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// Events
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/// <summary>
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/// Occurs when an item is clicked in this <see cref="BreadcrumbBar"/> instance.
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/// </summary>
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public event TypedEventHandler<BreadcrumbBar, BreadcrumbBarItemClickedEventArgs>? ItemClicked;
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// Constructor
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public BreadcrumbBar()
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{
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DefaultStyleKey = typeof(BreadcrumbBar);
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_itemsRepeaterLayout = new(this);
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}
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// Methods
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protected override void OnApplyTemplate()
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{
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base.OnApplyTemplate();
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_itemsRepeater = GetTemplateChild(_itemsRepeaterName) as ItemsRepeater
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?? throw new MissingFieldException($"Could not find {_itemsRepeaterName} in the given {nameof(BreadcrumbBar)}'s style.");
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//_itemsRepeater.Layout = _itemsRepeaterLayout;
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_itemsRepeater.ElementPrepared += ItemsRepeater_ElementPrepared;
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}
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internal void RaiseItemClickedEvent(BreadcrumbBarItem item)
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{
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var index = _itemsRepeater.GetElementIndex(item);
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var eventArgs = new BreadcrumbBarItemClickedEventArgs(item, index);
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ItemClicked?.Invoke(this, eventArgs);
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}
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// Event methods
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private void ItemsRepeater_ElementPrepared(ItemsRepeater sender, ItemsRepeaterElementPreparedEventArgs args)
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{
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if (args.Element is not BreadcrumbBarItem item)
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return;
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item.SetOwner(this);
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}
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}
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}

‎src/Files.App.Controls/BreadcrumbBar/BreadcrumbBar.xaml‎

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<!-- Copyright (c) Files Community. Licensed under the MIT License. -->
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<ResourceDictionary
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:animatedvisuals="using:Microsoft.UI.Xaml.Controls.AnimatedVisuals"
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xmlns:local="using:Files.App.Controls">
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<x:Double x:Key="BreadcrumbBarItemHeight">32</x:Double>
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<Style BasedOn="{StaticResource DefaultBreadcrumbBarStyle}" TargetType="local:BreadcrumbBar" />
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<Style BasedOn="{StaticResource DefaultBreadcrumbBarItemStyle}" TargetType="local:BreadcrumbBarItem" />
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<Style x:Key="DefaultBreadcrumbBarStyle" TargetType="local:BreadcrumbBar">
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<Setter Property="AutomationProperties.LandmarkType" Value="Navigation" />
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<Setter Property="IsTabStop" Value="False" />
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<Setter Property="Template">
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<Setter.Value>
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<ControlTemplate TargetType="local:BreadcrumbBar">
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<ItemsRepeater
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x:Name="PART_RootItemsRepeater"
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ItemTemplate="{Binding ItemTemplate, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}"
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ItemsSource="{Binding ItemsSource, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}">
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<ItemsRepeater.Layout>
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<StackLayout Orientation="Horizontal" />
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</ItemsRepeater.Layout>
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</ItemsRepeater>
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</ControlTemplate>
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</Setter.Value>
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</Setter>
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</Style>
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<Style x:Key="DefaultBreadcrumbBarItemStyle" TargetType="local:BreadcrumbBarItem">
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<Setter Property="Background" Value="{ThemeResource BreadcrumbBarBackgroundBrush}" />
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<Setter Property="BorderBrush" Value="{ThemeResource BreadcrumbBarBorderBrush}" />
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<Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}" />
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<Setter Property="FontSize" Value="{ThemeResource BreadcrumbBarItemThemeFontSize}" />
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<Setter Property="FontWeight" Value="{ThemeResource BreadcrumbBarItemFontWeight}" />
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<Setter Property="Foreground" Value="{ThemeResource BreadcrumbBarForegroundBrush}" />
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<Setter Property="Height" Value="{ThemeResource BreadcrumbBarItemHeight}" />
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<Setter Property="HorizontalAlignment" Value="Stretch" />
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<Setter Property="HorizontalContentAlignment" Value="Stretch" />
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<Setter Property="IsTabStop" Value="True" />
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<Setter Property="UseSystemFocusVisuals" Value="{StaticResource UseSystemFocusVisuals}" />
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<Setter Property="VerticalAlignment" Value="Stretch" />
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<Setter Property="VerticalContentAlignment" Value="Stretch" />
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<Setter Property="CornerRadius" Value="2" />
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<Setter Property="Template">
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<Setter.Value>
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<ControlTemplate TargetType="local:BreadcrumbBarItem">
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<Grid x:Name="PART_LayoutRoot" ColumnSpacing="2">
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<Grid.ColumnDefinitions>
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<ColumnDefinition x:Name="PART_ContentColumn" Width="Auto" />
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<ColumnDefinition x:Name="PART_ChevronColumn" Width="Auto" />
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</Grid.ColumnDefinitions>
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<!-- Clickable Area -->
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<Border
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x:Name="PART_ItemButton"
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Background="Transparent"
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CornerRadius="{TemplateBinding CornerRadius}">
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<Border.BackgroundTransition>
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<BrushTransition Duration="0:0:0.083" />
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</Border.BackgroundTransition>
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<ContentPresenter
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x:Name="PART_ItemContentPresenter"
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Margin="8,0"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"
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Content="{TemplateBinding Content}"
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ContentTemplate="{TemplateBinding ContentTemplate}" />
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</Border>
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<!-- Chevron -->
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<Border
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x:Name="PART_ChevronButton"
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Grid.Column="1"
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Background="Transparent"
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CornerRadius="{TemplateBinding CornerRadius}">
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<Border.BackgroundTransition>
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<BrushTransition Duration="0:0:0.083" />
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</Border.BackgroundTransition>
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<FlyoutBase.AttachedFlyout>
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<MenuFlyout
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x:Name="PART_ChevronDropDownMenuFlyout"
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Placement="Bottom"
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ScrollViewer.VerticalScrollBarVisibility="Auto"
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ScrollViewer.VerticalScrollMode="Auto">
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<MenuFlyout.MenuFlyoutPresenterStyle>
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<Style TargetType="MenuFlyoutPresenter">
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<Setter Property="MaxHeight" Value="400" />
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<!-- Workaround for https://github.com/files-community/Files/issues/13078 -->
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<Setter Target="HighContrastAdjustment" Value="None" />
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</Style>
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</MenuFlyout.MenuFlyoutPresenterStyle>
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</MenuFlyout>
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</FlyoutBase.AttachedFlyout>
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<AnimatedIcon
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x:Name="PART_ChevronAnimatedIcon"
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Width="12"
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Height="12"
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Margin="4,0"
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HorizontalAlignment="Center"
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VerticalAlignment="Center"
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AnimatedIcon.State="NormalOff"
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MirroredWhenRightToLeft="True"
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RenderTransformOrigin="0.5, 0.5">
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<AnimatedIcon.FallbackIconSource>
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<FontIconSource
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x:Name="ChevronAnimatedIconFallbackFontIcon"
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FontSize="12"
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Glyph="&#xE76C;"
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IsTextScaleFactorEnabled="False" />
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</AnimatedIcon.FallbackIconSource>
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<animatedvisuals:AnimatedChevronRightDownSmallVisualSource />
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</AnimatedIcon>
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</Border>
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<VisualStateManager.VisualStateGroups>
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<VisualStateGroup x:Name="PointerStates">
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<VisualState x:Name="PointerNormal" />
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<VisualState x:Name="PointerOverItem">
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<VisualState.Setters>
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<Setter Target="PART_ItemButton.Background" Value="{ThemeResource ControlFillColorSecondaryBrush}" />
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<Setter Target="PART_ChevronButton.Background" Value="{ThemeResource ControlFillColorSecondaryBrush}" />
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</VisualState.Setters>
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</VisualState>
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<VisualState x:Name="PointerOverChevron">
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<VisualState.Setters>
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<Setter Target="PART_ChevronButton.Background" Value="{ThemeResource ControlFillColorSecondaryBrush}" />
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</VisualState.Setters>
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</VisualState>
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<VisualState x:Name="PointerPressedOnItem">
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<VisualState.Setters>
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<Setter Target="PART_ItemButton.Background" Value="{ThemeResource ControlFillColorTertiaryBrush}" />
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<Setter Target="PART_ChevronButton.Background" Value="{ThemeResource ControlFillColorTertiaryBrush}" />
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</VisualState.Setters>
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</VisualState>
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<VisualState x:Name="PointerPressedOnChevron">
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<VisualState.Setters>
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<Setter Target="PART_ChevronButton.Background" Value="{ThemeResource ControlFillColorTertiaryBrush}" />
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</VisualState.Setters>
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</VisualState>
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</VisualStateGroup>
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<VisualStateGroup x:Name="ItemTypeStates">
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<VisualState x:Name="DefaultItemType" />
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<VisualState x:Name="LastItemType">
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<VisualState.Setters>
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<Setter Target="PART_ItemButton.Visibility" Value="Collapsed" />
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</VisualState.Setters>
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</VisualState>
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</VisualStateGroup>
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<VisualStateGroup x:Name="ChevronStates">
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<VisualState x:Name="ChevronNormalOff" />
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<VisualState x:Name="ChevronNormalOn">
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<VisualState.Setters>
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<Setter Target="PART_ChevronAnimatedIcon.(AnimatedIcon.State)" Value="NormalOn" />
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</VisualState.Setters>
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</VisualState>
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</VisualStateGroup>
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</VisualStateManager.VisualStateGroups>
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</Grid>
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</ControlTemplate>
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</Setter.Value>
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</Setter>
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</Style>
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<Style x:Key="DefaultBreadcrumbEllipsisFlyoutStyle" TargetType="FlyoutPresenter">
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<Setter Property="Background" Value="{ThemeResource BreadcrumbBarEllipsisFlyoutPresenterBackground}" />
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<Setter Property="BorderBrush" Value="{ThemeResource BreadcrumbBarEllipsisFlyoutPresenterBorderBrush}" />
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<Setter Property="BorderThickness" Value="{ThemeResource BreadcrumbBarEllipsisFlyoutPresenterBorderThemeThickness}" />
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<Setter Property="Padding" Value="0,2" />
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<Setter Property="ScrollViewer.HorizontalScrollMode" Value="Disabled" />
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<Setter Property="ScrollViewer.VerticalScrollMode" Value="Auto" />
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<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
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<Setter Property="ScrollViewer.IsHorizontalRailEnabled" Value="False" />
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<Setter Property="ScrollViewer.IsVerticalRailEnabled" Value="False" />
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<Setter Property="ScrollViewer.ZoomMode" Value="Disabled" />
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<Setter Property="MaxWidth" Value="{ThemeResource FlyoutThemeMaxWidth}" />
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<Setter Property="MinHeight" Value="40" />
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<Setter Property="CornerRadius" Value="{ThemeResource OverlayCornerRadius}" />
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<Setter Property="Template">
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<Setter.Value>
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<ControlTemplate TargetType="FlyoutPresenter">
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<Grid
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Background="{TemplateBinding Background}"
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BackgroundSizing="InnerBorderEdge"
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CornerRadius="{TemplateBinding CornerRadius}">
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<ScrollViewer
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x:Name="FlyoutPresenterScrollViewer"
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Margin="{TemplateBinding Padding}"
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AutomationProperties.AccessibilityView="Raw"
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Content="{TemplateBinding Content}"
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HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
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HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}"
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IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}"
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IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}"
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VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}"
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VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}"
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ZoomMode="{TemplateBinding ScrollViewer.ZoomMode}" />
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<Border
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x:Name="FlyoutPresenterBorder"
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BorderBrush="{TemplateBinding BorderBrush}"
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BorderThickness="{TemplateBinding BorderThickness}"
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CornerRadius="{TemplateBinding CornerRadius}" />
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</Grid>
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</ControlTemplate>
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</Setter.Value>
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</Setter>
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</Style>
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</ResourceDictionary>

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