Class MindMapTreeLayout

Represents a class to arrange the nodes and connectors automatically in a mind-map tree structure.

Inheritance
System.Object
LayoutBase
TreeLayoutBase
MindMapTreeLayout
Implements
System.ComponentModel.INotifyPropertyChanged
Inherited Members
Namespace: Syncfusion.UI.Xaml.Diagram.Layout
Assembly: Syncfusion.SfDiagram.WPF.dll
Syntax
public class MindMapTreeLayout : TreeLayoutBase, ILayout, IInternalLayout, INotifyPropertyChanged
Examples

Below example shows how to create MindMapTreeLayout

public class MindmapDataItem
{
    public string Label { get; set; }
    public string ParentId { get; set; }
}

public class MindmapDataItems : ObservableCollection<MindmapDataItem>
{
}

Constructors

MindMapTreeLayout()

Initializes the new instance of the MindMapTreeLayout class.

Declaration
public MindMapTreeLayout()

Properties

LayoutRoot

Gets or sets the root node of the layout.

Declaration
public override object LayoutRoot { get; set; }
Property Value
Type
System.Object
Overrides

Orientation

Gets or sets a value that indicates the dimension by which child elements are layouted in the mind-map tree.

Declaration
public Orientation Orientation { get; set; }
Property Value
Type
System.Windows.Controls.Orientation
Examples

Below example shows how the mind-map tree orientation is assigned for MindMapTreeLayout

 
diagram.LayoutManager = new LayoutManager()
{
Layout = new MindMapTreeLayout()
{
Orientation = Orientation.Horizontal,
},
};

SplitMode

Gets or sets the criteria for arranging the mind map branches.

Declaration
public MindMapTreeMode SplitMode { get; set; }
Property Value
Type
MindMapTreeMode
Examples

Below example shows how to arrange the mind map branches for MindMapTreeLayout

 
diagram.LayoutManager = new LayoutManager()
{
Layout = new MindMapTreeLayout()
{
SplitMode = MindMapTreeMode.Area,
},
};

Methods

GetRootChildDirection(INode)

When overridden in a derived class, determines the direction for sub-branches.

Declaration
protected virtual RootChildDirection GetRootChildDirection(INode node)
Parameters
Type Name Description
INode node

Instance of INode
Returns
Type Description
RootChildDirection

Specifies the direction for the branches
Examples

Below example shows how to specify the direction for mind-map tree branches.

SfDiagram.LayoutManager = new LayoutManager()
{
Layout = new MindMapTreeLayout()
{
SplitMode = MindMapTreeMode.Custom,
},
};
public class SfMindMapTreeLayout : MindMapTreeLayout
{
protected override RootChildDirection GetRootChildDirection(INode node)
{
if (node.Content is MindmapDataItem)
{
return (node.Content as MindmapDataItem).Direction = RootChildDirection.Left; ;
}
return base.GetRootChildDirection(node);
}
}

InvalidateLayout()

Invalidates the arrange state (layout) for the element. After the invalidation, the element will have its layout updated, which will occur asynchronously unless subsequently forced by UpdateLayout().

Declaration
public override void InvalidateLayout()
Overrides

OnPropertyChanged(String)

Method to notify when property values are changed for MindMapTreeLayout class.

Declaration
protected override void OnPropertyChanged(string name)
Parameters
Type Name Description
System.String name
Overrides

UpdateLayout()

Method to update the currently arranged Nodes and Connectors.

Declaration
public override void UpdateLayout()
Overrides

UpdateLayout(Object)

Method to update the currently arranged Nodes and Connectors.

Declaration
public override void UpdateLayout(object fixedNode)
Parameters
Type Name Description
System.Object fixedNode

The node which is used as anchor to layout
Overrides

Implements

System.ComponentModel.INotifyPropertyChanged