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问题描述
我有以下Popup：
< Popup Name =popupBind
AllowsTransparency =True
Helpers：FocusHelper.IsFocused ={Binding RelativeSource = {RelativeSource Self}，
Path = IsOpen，
Mode = OneWay}
HorizontalOffset = - 30
IsOpen ={Binding IsBindingBegun，
Mode = TwoWay}
Placement =Bottom
PlacementTarget ={Binding ElementName = bindButton}
StaysOpen =False
>
Border Border ={DynamicResource {x：Static Styles：CommonStyles.ButtonsPanelBackgroundKey}}
BorderBrush =Black
BorderThickness =1
Padding =0 >
< StackPanel HorizontalAlignment =Stretch>
< StackPanel.Resources>
< TemplateSelectors：VersionRangeDataTemplateSelector x：Key =VersionRangeDataTemplateSelector/>
< Converters：RangeToVisibilityConverter x：Key =RangeToVisibilityConverter/>
< StackPanel Margin =5,5,5,2
HorizontalAlignment =Stretch
Orientation =Horizontal>
< StackPanel.Resources>
< Style TargetType =Button>
< Setter Property =MarginValue =5/>
< / style>
< Button Command ={Binding BindCommand}
>
< / Button>
< Button Command ={Binding BindCommand}
>
< / Button>
< Button Command ={Binding BindCommand}
>
< / Button>
< Button Command ={Binding BindCommand}
>
< / Button>
< / StackPanel>
< ItemsControl Margin =10,2,5,5
Focusable =False
Grid.IsSharedSizeScope =True
ItemTemplateSelector ={ StaticResource VersionRangeDataTemplateSelector}
ItemsSource ={Binding Path = VersionsVm.TempRanges}>
< ItemsControl.Resources>
< Style TargetType =CheckBox>
< Setter Property =VerticalAlignmentValue =Center/>
< Setter Property =PaddingValue =0/>
< / style>
< Style TargetType =TextBlock>
< Setter Property =FontSizeValue =14/>
< Setter Property =VerticalAlignmentValue =Center/>
< Setter Property =PaddingValue =2/>
< / style>
< DataTemplate x：Key =TwoDistinctVersionsRangeTemplateKey>
< Grid Margin =2,4HorizontalAlignment =Stretch>
< Grid.ColumnDefinitions>
< ColumnDefinition Width =AutoSharedSizeGroup =_ 1/>
< ColumnDefinition Width =AutoSharedSizeGroup =_ 2/>
< ColumnDefinition Width =AutoSharedSizeGroup =_ 3/>
< ColumnDefinition Width =AutoSharedSizeGroup =_ 4/>
< ColumnDefinition Width =AutoSharedSizeGroup =_ 5/>
< ColumnDefinition Width =AutoSharedSizeGroup =_ 6/>
< ColumnDefinition Width =AutoSharedSizeGroup =_ 7/>
< /Grid.ColumnDefinitions>
< CheckBox Grid.Column =0IsChecked ={Binding IncludeStartEdge，Mode = TwoWay，UpdateSourceTrigger = PropertyChanged}/>
< TextBlock Grid.Column =1Margin =2,0,5,0>
< TextBlock.Style>
< Style TargetType =TextBlock>
< Style.Triggers>
< DataTrigger Binding ={Binding IncludeStartEdge}Value =True>
< Setter Property =TextValue =[/>
< / DataTrigger>
< DataTrigger Binding ={Binding IncludeStartEdge}Value =False>
< Setter Property =TextValue =（/>
< / DataTrigger>
< /Style.Triggers>
< / style>
< /TextBlock.Style>
< / TextBlock>
< TextBlock Grid.Column =2
HorizontalAlignment =Left
text ={Binding FromVersionName}
TextAlignment =Left/>
< TextBlock Grid.Column =3
Width =10
保证金=5,0
HorizontalAlignment =Center
Text = -
TextAlignment =Center/>
TextBlock Grid.Column =4
HorizontalAlignment =Left
Text ={Binding ToVersionName}
TextAlignment =Left/> ;
< TextBlock Grid.Column =5Margin =5,0,2,0>
< TextBlock.Style>
< Style TargetType =TextBlock>
< Style.Triggers>
< DataTrigger Binding ={Binding IncludeEndEdge}Value =True>
< Setter Property =TextValue =]/>
< / DataTrigger>
< DataTrigger Binding ={Binding IncludeEndEdge}Value =False>
< Setter Property =TextValue =）/>
< / DataTrigger>
< / style>
< /TextBlock.Style>
< / TextBlock>
< CheckBox Grid.Column =6IsChecked ={Binding IncludeEndEdge，Mode = TwoWay，UpdateSourceTrigger = PropertyChanged}/>
< / Grid>
< / DataTemplate>
< DataTemplate x：Key =FixedVersionRangeTemplateKey>
< StackPanel>
TextBlock Margin =2,4
HorizontalAlignment =Left
VerticalAlignment =Center
Text ={Binding FromVersionName}
TextAlignment = 左/>
< StackPanel>
< StackPanel.Visibility>
< MultiBinding Converter ={StaticResource RangeToVisibilityConverter}>
< MultiBinding.Bindings>
< Binding />
< Binding RelativeSource ={RelativeSource Mode = FindAncestor，AncestorType = UserControl}/>
< / MultiBinding>
< RadioButton Command ={Binding RelativeSource = {RelativeSource Mode = FindAncestor，
AncestorType = UserControl}，
Path = DataContext.VersionsVm.ChangeTempRangeTypeCommand}
Content =& amp ; LT; />
< RadioButton Command ={Binding RelativeSource = {RelativeSource Mode = FindAncestor，
AncestorType = UserControl}，
Path = DataContext.VersionsVm.ChangeTempRangeTypeCommand}
Content =& amp ; lt; =/>
< RadioButton Command ={Binding RelativeSource = {RelativeSource Mode = FindAncestor，
AncestorType = UserControl}，
Path = DataContext.VersionsVm.ChangeTempRangeTypeCommand}
Content ==
IsChecked =True/>
< RadioButton Command ={Binding RelativeSource = {RelativeSource Mode = FindAncestor，
AncestorType = UserControl}，
Path = DataContext.VersionsVm.ChangeTempRangeTypeCommand}
Content =& amp ; gt; =/>
< RadioButton Command ={Binding RelativeSource = {RelativeSource Mode = FindAncestor，
AncestorType = UserControl}，
Path = DataContext.VersionsVm.ChangeTempRangeTypeCommand}
Content =& amp ; gt;中/>
< / StackPanel>
< / StackPanel>
< / DataTemplate>
< / ItemsControl>
< / StackPanel>
< / Border>
< / Popup>
我有一个很奇怪的问题。左或右聚焦离开弹出窗口，并转到父窗口。 Popus保持开放。
我不知道为什么会发生这种情况。但是我的键盘导航有问题。
我唯一可以怀疑的是Popup的父类是在WinForms的ElementHost中托管的UserControl。
我没有想法如何调试这个问题，所以我感谢任何有帮助的提示。
先谢谢你。
解决方案
在IsOpen上绑定可以覆盖StaysOpen行为。我看不到更多，但是如果这个IsOpen绑定持续从其来源的 True 值，将保持弹出打开，无论发生什么焦点。 p>
I have the following Popup:
<Popup Name="popupBind"
AllowsTransparency="True"
Helpers:FocusHelper.IsFocused="{Binding RelativeSource={RelativeSource Self},
Path=IsOpen,
Mode=OneWay}"
HorizontalOffset="-30"
IsOpen="{Binding IsBindingBegun,
Mode=TwoWay}"
Placement="Bottom"
PlacementTarget="{Binding ElementName=bindButton}"
StaysOpen="False"
>
<Border Background="{DynamicResource {x:Static Styles:CommonStyles.ButtonsPanelBackgroundKey}}"
BorderBrush="Black"
BorderThickness="1"
Padding="0">
<StackPanel HorizontalAlignment="Stretch">
<StackPanel.Resources>
<TemplateSelectors:VersionRangeDataTemplateSelector x:Key="VersionRangeDataTemplateSelector" />
<Converters:RangeToVisibilityConverter x:Key="RangeToVisibilityConverter" />
</StackPanel.Resources>
<StackPanel Margin="5,5,5,2"
HorizontalAlignment="Stretch"
Orientation="Horizontal">
<StackPanel.Resources>
<Style TargetType="Button">
<Setter Property="Margin" Value="5" />
</Style>
</StackPanel.Resources>
<Button Command="{Binding BindCommand}"
>
</Button>
<Button Command="{Binding BindCommand}"
>
</Button>
<Button Command="{Binding BindCommand}"
>
</Button>
<Button Command="{Binding BindCommand}"
>
</Button>
</StackPanel>
<ItemsControl Margin="10,2,5,5"
Focusable="False"
Grid.IsSharedSizeScope="True"
ItemTemplateSelector="{StaticResource VersionRangeDataTemplateSelector}"
ItemsSource="{Binding Path=VersionsVm.TempRanges}">
<ItemsControl.Resources>
<Style TargetType="CheckBox">
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="Padding" Value="0" />
</Style>
<Style TargetType="TextBlock">
<Setter Property="FontSize" Value="14" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="Padding" Value="2" />
</Style>
<DataTemplate x:Key="TwoDistinctVersionsRangeTemplateKey">
<Grid Margin="2,4" HorizontalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" SharedSizeGroup="_1" />
<ColumnDefinition Width="Auto" SharedSizeGroup="_2" />
<ColumnDefinition Width="Auto" SharedSizeGroup="_3" />
<ColumnDefinition Width="Auto" SharedSizeGroup="_4" />
<ColumnDefinition Width="Auto" SharedSizeGroup="_5" />
<ColumnDefinition Width="Auto" SharedSizeGroup="_6" />
<ColumnDefinition Width="Auto" SharedSizeGroup="_7" />
</Grid.ColumnDefinitions>
<CheckBox Grid.Column="0" IsChecked="{Binding IncludeStartEdge, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
<TextBlock Grid.Column="1" Margin="2,0,5,0">
<TextBlock.Style>
<Style TargetType="TextBlock">
<Style.Triggers>
<DataTrigger Binding="{Binding IncludeStartEdge}" Value="True">
<Setter Property="Text" Value="[" />
</DataTrigger>
<DataTrigger Binding="{Binding IncludeStartEdge}" Value="False">
<Setter Property="Text" Value="(" />
</DataTrigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
<TextBlock Grid.Column="2"
HorizontalAlignment="Left"
Text="{Binding FromVersionName}"
TextAlignment="Left" />
<TextBlock Grid.Column="3"
Width="10"
Margin="5,0"
HorizontalAlignment="Center"
Text="-"
TextAlignment="Center" />
<TextBlock Grid.Column="4"
HorizontalAlignment="Left"
Text="{Binding ToVersionName}"
TextAlignment="Left" />
<TextBlock Grid.Column="5" Margin="5,0,2,0">
<TextBlock.Style>
<Style TargetType="TextBlock">
<Style.Triggers>
<DataTrigger Binding="{Binding IncludeEndEdge}" Value="True">
<Setter Property="Text" Value="]" />
</DataTrigger>
<DataTrigger Binding="{Binding IncludeEndEdge}" Value="False">
<Setter Property="Text" Value=")" />
</DataTrigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
<CheckBox Grid.Column="6" IsChecked="{Binding IncludeEndEdge, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
</Grid>
</DataTemplate>
<DataTemplate x:Key="FixedVersionRangeTemplateKey">
<StackPanel>
<TextBlock Margin="2,4"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Text="{Binding FromVersionName}"
TextAlignment="Left" />
<StackPanel>
<StackPanel.Visibility>
<MultiBinding Converter="{StaticResource RangeToVisibilityConverter}">
<MultiBinding.Bindings>
<Binding />
<Binding RelativeSource="{RelativeSource Mode=FindAncestor, AncestorType=UserControl}" />
</MultiBinding.Bindings>
</MultiBinding>
</StackPanel.Visibility>
<RadioButton Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=UserControl},
Path=DataContext.VersionsVm.ChangeTempRangeTypeCommand}"
Content="<" />
<RadioButton Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=UserControl},
Path=DataContext.VersionsVm.ChangeTempRangeTypeCommand}"
Content="<=" />
<RadioButton Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=UserControl},
Path=DataContext.VersionsVm.ChangeTempRangeTypeCommand}"
Content="="
IsChecked="True" />
<RadioButton Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=UserControl},
Path=DataContext.VersionsVm.ChangeTempRangeTypeCommand}"
Content=">=" />
<RadioButton Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=UserControl},
Path=DataContext.VersionsVm.ChangeTempRangeTypeCommand}"
Content=">" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ItemsControl.Resources>
</ItemsControl>
</StackPanel>
</Border>
</Popup>
I have a very strange issue with it.
When I hit Tab, Left or Right focus leaves popup and goes to the parent window. Popus stays opened.
I do not know why this happens. But I've got broken keyboard navigation.
The only thing I can suspect to be the reason is that parent of Popup is UserControl hosted inside winforms ElementHost.
I have no idea how to debug this problem so I appreciate any helpful hints.
Thank you in advance.
解决方案
Having a Binding on IsOpen can override the StaysOpen behavior. I can't tell without seeing more but if that IsOpen binding is persisting a True value from its source that would keep the Popup open no matter what happens with the focus.
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