Interface IGroupService

Defines the grouping service.

Namespace: Telerik.Windows.Diagrams.Core
Assembly: Telerik.WinControls.RadDiagram.dll

Syntax

public interface IGroupService
Remarks

Note that this service can be customized and plugged into the ServiceLocator.

Properties

Groups

Gets the groups.

Declaration
IEnumerable<IGroup> Groups { get; }
Property Value
System.Collections.Generic.IEnumerable<IGroup>

RootGroups

Gets the root groups.

Declaration
IEnumerable<IGroup> RootGroups { get; }
Property Value
System.Collections.Generic.IEnumerable<IGroup>

SelectedGroups

Gets the selected groups.

Declaration
IEnumerable<IGroup> SelectedGroups { get; }
Property Value
System.Collections.Generic.IEnumerable<IGroup>

Methods

ChangeGroup(IGroupable, IGroup, IGroup, Boolean)

Changes the group of an item.

Declaration
void ChangeGroup(IGroupable item, IGroup oldGroup, IGroup newGroup, bool isInternalChanging)
Parameters
IGroupable item

The item.
IGroup oldGroup

The old group.
IGroup newGroup

The new group.
System.Boolean isInternalChanging

The is internal changing.

DiagramItemsChanged(NotifyCollectionChangedEventArgs)

Clears the empty groups on DiagramItemsChanged.

Declaration
void DiagramItemsChanged(NotifyCollectionChangedEventArgs e)
Parameters
System.Collections.Specialized.NotifyCollectionChangedEventArgs e

The System.Collections.Specialized.NotifyCollectionChangedEventArgs instance containing the event data.

GetItemSiblings(IDiagramItem, Boolean)

Gets the siblings of the item.

Declaration
IEnumerable<IDiagramItem> GetItemSiblings(IDiagramItem item, bool addToSelection)
Parameters
IDiagramItem item

The item.
System.Boolean addToSelection

The add to selection.
Returns
System.Collections.Generic.IEnumerable<IDiagramItem>

Group(String, IGroupable[])

Groups the specified items.

Declaration
IGroup Group(string name = null, params IGroupable[] items)
Parameters
System.String name

The group name.
IGroupable[] items

The items.
Returns
IGroup

Group(IGroup, IGroupable[])

Groups the specified items in the provided group.

Declaration
IGroup Group(IGroup hostGroup, params IGroupable[] items)
Parameters
IGroup hostGroup

The group hosting the new items.
IGroupable[] items

The items.
Returns
IGroup

OnItemParentGroupChanged(Object, PropertyEventArgs<IGroup>)

Called when item parent group changes.

Declaration
void OnItemParentGroupChanged(object sender, PropertyEventArgs<IGroup> e)
Parameters
System.Object sender

The sender.
PropertyEventArgs<IGroup> e

The instance containing the event data.

Ungroup(IGroup)

Ungroups the specified group.

Declaration
void Ungroup(IGroup group)
Parameters
IGroup group

The group.

Ungroup(IGroup[])

Ungroups the specified groups.

Declaration
void Ungroup(IGroup[] groups)
Parameters
IGroup[] groups

The groups.

Events

GroupsChanged

Occurs when groups have changed.

Declaration
event NotifyCollectionChangedEventHandler GroupsChanged
Event Type
System.Collections.Specialized.NotifyCollectionChangedEventHandler

Extension Methods