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Xceed Toolkit Plus for WPF v5.0 Documentation
Xceed.Wpf.AvalonDock Assembly / Xceed.Wpf.AvalonDock.Controls Namespace / LayoutItem Class
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In This Topic
    LayoutItem Class
    In This Topic
    Base class of LayoutAnchorableItem and LayoutDocumentItem.
    Syntax
    'Declaration
 
<StyleTypedPropertyAttribute(Property="FocusVisualStyle", StyleTargetType=System.Windows.Controls.Control)>
<XmlLangPropertyAttribute("Language")>
<UsableDuringInitializationAttribute(True)>
<RuntimeNamePropertyAttribute("Name")>
<UidPropertyAttribute("Uid")>
<TypeDescriptionProviderAttribute(MS.Internal.ComponentModel.DependencyObjectProvider)>
<NameScopePropertyAttribute("NameScope", System.Windows.NameScope)>
Public MustInherit Class LayoutItem 
   Inherits System.Windows.FrameworkElement
    'Usage
 
Dim instance As LayoutItem
    [StyleTypedProperty(Property="FocusVisualStyle", StyleTargetType=System.Windows.Controls.Control)]
[XmlLangProperty("Language")]
[UsableDuringInitialization(true)]
[RuntimeNameProperty("Name")]
[UidProperty("Uid")]
[TypeDescriptionProvider(MS.Internal.ComponentModel.DependencyObjectProvider)]
[NameScopeProperty("NameScope", System.Windows.NameScope)]
public abstract class LayoutItem : System.Windows.FrameworkElement
    Remarks
    AvalonDock adheres to an MVVM design.

    The Model is represented by the classes contained in the Xceed.Wpf.AvalonDock.Layout namespace. The classes in this namespace are the layout elements in a layout model (for example LayoutAnchorable/LayoutDocument, LayoutAnchorablePane/LayoutDocumentPane, LayoutAnchorablePaneGroup/LayoutDocumentPaneGroup, etc.) that are used directly in XAML within a DockingManager to describe how the layout is composed.

    The View is represented by the classes contained in the Xceed.Wpf.AvalonDock.Controls namespace; these classes are a set of stylizable controls that show the user controls. The names of the view controls typically end with "Control" (for example, LayoutAnchorableControl is the view control, whereas LayoutAnchorable is the model element).

    The DockingManager uses various classes (such as the LayoutItem and its derived classes) to perform the role of the ViewModel, preparing the model to be consumed by the view.

    There is one and only one logical tree, which has the DockingManager as its root. Even if a control is placed in a different window (i.e., autohidden windows or floating windows), it always belong to the same logical tree below the DockingManager.

    The LayoutContent-derived elements in the layout contained in the Layout property of class DockingManager are associated with the corresponding LayoutItem-derived objects when the layout changes.

    Example
     
    Inheritance Hierarchy

    System.Object
       System.Windows.Threading.DispatcherObject
          System.Windows.DependencyObject
             System.Windows.Media.Visual
                System.Windows.UIElement
                   System.Windows.FrameworkElement
                      Xceed.Wpf.AvalonDock.Controls.LayoutItem
                         Xceed.Wpf.AvalonDock.Controls.LayoutAnchorableItem
                         Xceed.Wpf.AvalonDock.Controls.LayoutDocumentItem

    Requirements

    Target Platforms: Windows 11, Windows 10, 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

    See Also

    Reference

    LayoutItem Members
    Xceed.Wpf.AvalonDock.Controls Namespace

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