Walleby/Bitvault.Avalonia/LockerNavigationView.axaml

<NavigationViewItem
    x:Class="Bitvault.Avalonia.LockerNavigationView"
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:vm="using:Bitvault"
    x:Name="NavigationViewItem"
    x:DataType="vm:LockerNavigationViewModel"
    Content="{Binding Name}"
    IsExpanded="{Binding Expanded}"
    MenuItemsSource="{Binding}"
    NavigationViewItemExtension.IsItemClickEnabled="True"
    SelectsOnInvoked="True">
    <Interaction.Behaviors>
        <DataTriggerBehavior Binding="{Binding Opened}" Value="False">
            <ConditionAction>
                <ConditionAction.Condition>
                    <ConditionalExpression ForwardChaining="And">
                        <ComparisonCondition LeftOperand="{Binding $parent[NavigationViewItem].IsSelected}" RightOperand="True" />
                    </ConditionalExpression>
                </ConditionAction.Condition>
                <NavigateAction Region="Main" Route="OpenLocker">
                    <Parameter Key="Name" Value="{Binding Name}" />
                </NavigateAction>
                <ChangePropertyAction
                    PropertyName="SelectsOnInvoked"
                    TargetObject="{Binding #NavigationViewItem}"
                    Value="True" />
            </ConditionAction>
        </DataTriggerBehavior>
        <DataTriggerBehavior Binding="{Binding Opened}" Value="True">
            <ConditionAction>
                <ConditionAction.Condition>
                    <ConditionalExpression ForwardChaining="And">
                        <ComparisonCondition LeftOperand="{Binding $parent[NavigationViewItem].IsSelected}" RightOperand="True" />
                    </ConditionalExpression>
                </ConditionAction.Condition>
                <ChangePropertyAction
                    PropertyName="SelectsOnInvoked"
                    TargetObject="{Binding #NavigationViewItem}"
                    Value="False" />
                <InvokeNavigationViewItemAction />
            </ConditionAction>
        </DataTriggerBehavior>
        <AttachedBehaviour>
            <ConditionAction>
                <ConditionAction.Condition>
                    <ConditionalExpression ForwardChaining="And">
                        <ComparisonCondition LeftOperand="{Binding Opened}" RightOperand="False" />
                    </ConditionalExpression>
                </ConditionAction.Condition>
                <NavigateAction Region="Main" Route="OpenLocker">
                    <Parameter Key="Name" Value="{Binding Name}" />
                </NavigateAction>
            </ConditionAction>
            <ConditionAction>
                <ConditionAction.Condition>
                    <ConditionalExpression ForwardChaining="And">
                        <ComparisonCondition LeftOperand="{Binding Opened}" RightOperand="True" />
                        <ComparisonCondition LeftOperand="{Binding Activated}" RightOperand="False" />
                    </ConditionalExpression>
                </ConditionAction.Condition>
                <NavigateAction Region="Main" Route="Locker" />
                <InvokeNavigationViewItemAction />
            </ConditionAction>
        </AttachedBehaviour>
        <AttachedEventTriggerBehaviour RoutedEvent="{x:Static NavigationViewItemExtension.ItemClickEvent}">
            <ConditionAction>
                <ConditionAction.Condition>
                    <ConditionalExpression ForwardChaining="And">
                        <ComparisonCondition LeftOperand="{Binding Opened}" RightOperand="False" />
                    </ConditionalExpression>
                </ConditionAction.Condition>
                <NavigateAction Region="Main" Route="OpenLocker">
                    <Parameter Key="Name" Value="{Binding Name}" />
                </NavigateAction>
            </ConditionAction>
            <ConditionAction>
                <ConditionAction.Condition>
                    <ConditionalExpression ForwardChaining="And">
                        <ComparisonCondition LeftOperand="{Binding Opened}" RightOperand="True" />
                        <ComparisonCondition LeftOperand="{Binding Activated}" RightOperand="False" />
                    </ConditionalExpression>
                </ConditionAction.Condition>
                <NavigateAction Region="Main" Route="Locker" />
                <InvokeNavigationViewItemAction />
            </ConditionAction>
        </AttachedEventTriggerBehaviour>
    </Interaction.Behaviors>
    <NavigationViewItem.IconSource>
        <PathIconSource Data="M512,757.76C525.653,757.76 537.6,752.64 547.84,742.4C558.08,732.16 563.2,720.213 563.2,706.56C563.2,692.907 558.08,680.96 547.84,670.72C537.6,660.48 525.653,655.36 512,655.36C498.347,655.36 486.4,660.48 476.16,670.72C465.92,680.96 460.8,692.907 460.8,706.56C460.8,720.213 465.92,732.16 476.16,742.4C486.4,752.64 498.347,757.76 512,757.76ZM307.2,399.36L358.4,399.36L358.4,348.16C358.4,305.835 373.419,269.653 403.456,239.616C433.493,209.579 469.675,194.56 512,194.56C554.325,194.56 590.507,209.579 620.544,239.616C650.581,269.653 665.6,305.835 665.6,348.16L665.6,399.36L716.8,399.36C759.125,399.36 795.307,414.379 825.344,444.416C855.381,474.453 870.4,510.635 870.4,552.96L870.4,860.16C870.4,902.485 855.381,938.667 825.344,968.704C795.307,998.741 759.125,1013.76 716.8,1013.76L307.2,1013.76C264.875,1013.76 228.693,998.741 198.656,968.704C168.619,938.667 153.6,902.485 153.6,860.16L153.6,552.96C153.6,510.635 168.619,474.453 198.656,444.416C228.693,414.379 264.875,399.36 307.2,399.36ZM512,245.76C483.328,245.76 459.093,255.659 439.296,275.456C419.499,295.253 409.6,319.488 409.6,348.16L409.6,399.36L614.4,399.36L614.4,348.16C614.4,319.488 604.501,295.253 584.704,275.456C564.907,255.659 540.672,245.76 512,245.76ZM819.2,552.96C819.2,524.288 809.301,500.053 789.504,480.256C769.707,460.459 745.472,450.56 716.8,450.56L307.2,450.56C278.528,450.56 254.293,460.459 234.496,480.256C214.699,500.053 204.8,524.288 204.8,552.96L204.8,860.16C204.8,888.832 214.699,913.067 234.496,932.864C254.293,952.661 278.528,962.56 307.2,962.56L716.8,962.56C745.472,962.56 769.707,952.661 789.504,932.864C809.301,913.067 819.2,888.832 819.2,860.16Z" />
    </NavigationViewItem.IconSource>
</NavigationViewItem>