Interface IDataViewCollection

Provides a view over the already computed data from the ItemsSource.

Namespace: Telerik.XamarinForms.Common.Data
Assembly: Telerik.XamarinForms.Common.dll

Syntax

public interface IDataViewCollection : IEnumerable

Properties

IsDataReady

Gets a value indicating whether all the internal data operations are completed and the view may be properly accessed.

Declaration
bool IsDataReady { get; }
Property Value
System.Boolean

Items

Gets the top-level items within the view. These might be either IDataGroup instances or data items if no grouping is applied.

Declaration
IReadOnlyList<object> Items { get; }
Property Value
System.Collections.Generic.IReadOnlyList<System.Object>

Methods

CollapseAll()

Collapses all the groups.

Declaration
void CollapseAll()

CollapseGroup(IDataGroup)

Attempts to collapse the provided IDataGroup instance.

Declaration
void CollapseGroup(IDataGroup group)
Parameters
IDataGroup group

CollapseItem(Object)

Collapses the immediate groups that contains the specified item.

Declaration
void CollapseItem(object item)
Parameters
System.Object item

ExpandAll()

Expands all the groups.

Declaration
void ExpandAll()

ExpandGroup(IDataGroup)

Attempts to expand the provided IDataGroup instance.

Declaration
void ExpandGroup(IDataGroup group)
Parameters
IDataGroup group

ExpandItem(Object)

Expands the chain of groups where the specified item resides.

Declaration
void ExpandItem(object item)
Parameters
System.Object item

GetGroups(Predicate<IDataGroup>)

Enumerates all the present IDataGroup instances using depth-first approach.

Declaration
IEnumerable<IDataGroup> GetGroups(Predicate<IDataGroup> condition = null)
Parameters
System.Predicate<IDataGroup> condition

An optional condition that may be used to filter the results.
Returns
System.Collections.Generic.IEnumerable<IDataGroup>

GetIsExpanded(IDataGroup)

Determines whether the provided group is considered "Expanded" - that is to have its ChildItems available - within the UI.

Declaration
bool GetIsExpanded(IDataGroup group)
Parameters
IDataGroup group

Returns
System.Boolean

GetParentGroup(Object)

Gets the IDataGroup instance where the specified item resides. Will be null if no grouping is applied or the item does not belong to the ItemsSource.

Declaration
IDataGroup GetParentGroup(object item)
Parameters
System.Object item

The data item to search for.
Returns
IDataGroup