JournalEntryUnifiedViewConverter Class
JournalEntryUnifiedViewConverter merges navigation back history and navigation forward history (as exposed by Frame or NavigationWindow) into a single, Windows Internet Explorer 7-style navigation menu.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
The JournalEntryUnifiedViewConverter type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | JournalEntryUnifiedViewConverter | Initializes a new instance of the JournalEntryUnifiedViewConverter class. |
| Name | Description | |
|---|---|---|
![]() | JournalEntryPosition | Gets or sets a value that specifies whether an entry is in back navigation history, forward navigation history, or is the current content of a navigator. |
| Name | Description | |
|---|---|---|
![]() | Convert | Merges two navigation history stacks. |
![]() | ConvertBack | Not implemented. |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() ![]() | GetJournalEntryPosition | Gets the JournalEntryPosition attached property for the specified element. |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | SetJournalEntryPosition | Sets the JournalEntryPositionProperty attached property of the specified element. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | JournalEntryPositionProperty | Identifies the JournalEntryPosition attached property. |
Both Frame and NavigationWindow display navigation chrome that supports history navigation using the following mechanisms:
A button for navigating back one piece of content at a time.
A button for navigating forward one piece of content at a time.
An Windows Internet Explorer 7-style drop-down list that shows:
A combined list of up to nine items in back navigation history and up to nine items in forward navigation history.
The position of the current piece of content with respect to both back and forward navigation history.
The navigation history is stored by both NavigationWindow and Frame in the following properties:
Back Navigation History: Frame::BackStack, NavigationWindow::BackStack.
Forward Navigation History: Frame::ForwardStack, NavigationWindow::ForwardStack.
To create the Windows Internet Explorer 7-style drop-down list, NavigationWindow and Frame use JournalEntryUnifiedViewConverter to merge their individual back navigation history and forward navigation history into a single list of navigation history entries. The resulting list contains up to nine entries from back navigation history and up to nine entries from forward navigation history, plus an entry for the current content.
If you create custom navigation UI, and need to provide an Windows Internet Explorer 7-style drop-down list, you can use JournalEntryUnifiedViewConverter to similar effect.
XAML Attribute Usage
This class is not typically used in XAML.
The following example shows how to construct a text-based navigation history menu. The menu uses JournalEntryUnifiedViewConverter to combine both the back and forward navigation histories of the hosted Frame navigator.
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:presentationFramework="clr-namespace:System.Windows.Navigation;assembly=presentationframework" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="JournalEntryUnifiedPositionConverterSnippets" > <Window.Resources> <presentationFramework:JournalEntryUnifiedViewConverter x:Key="JournalEntryUnifiedViewConverter" /> <!--MenuItem data template--> <DataTemplate x:Key="JournalEntryMenuItemTemplate"> <MenuItem VerticalContentAlignment="Center" Command="NavigationCommands.NavigateJournal" CommandTarget="{Binding ElementName=frame}" CommandParameter="{Binding RelativeSource={RelativeSource Self}}"> <MenuItem.Template> <ControlTemplate> <TextBlock> <TextBlock Text="{Binding (JournalEntryUnifiedViewConverter.JournalEntryPosition)}" FontWeight="Bold"></TextBlock> <LineBreak /> <TextBlock Text="{Binding Path=Name}" /> </TextBlock> </ControlTemplate> </MenuItem.Template> </MenuItem> </DataTemplate> </Window.Resources> <DockPanel> <!--Unified navigation history menu--> <Menu DockPanel.Dock="Top"> <MenuItem Header="Unified Navigation History" ItemTemplate="{DynamicResource JournalEntryMenuItemTemplate}"> <MenuItem.ItemsSource> <MultiBinding Converter="{StaticResource JournalEntryUnifiedViewConverter}"> <MultiBinding.Bindings> <Binding ElementName="frame" Path="BackStack"/> <Binding ElementName="frame" Path="ForwardStack" /> </MultiBinding.Bindings> </MultiBinding> </MenuItem.ItemsSource> </MenuItem> </Menu> <!--Navigator (Frame with its navigation chrome hidden--> <Frame Name="frame" NavigationUIVisibility="Hidden" Source="HomePage.xaml" /> </DockPanel> </Window>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
