Class DistanceCounterSubset

A collection of entities that is shared with a parent collection for which distances need to counted. The collection only is a subset for a specific range in the parent distance collection.

When you change the size of an element in this collection the change will also be reflected in the parent collection and vice versa.

Inheritance

System.Object

DistanceCounterSubset

Implements

IDistanceCounterCollection

IDistancesHost

System.IDisposable

Namespace: Syncfusion.UI.Xaml.Grids.ScrollAxis

Assembly: Syncfusion.GridCommon.WinUI.dll

Syntax

public class DistanceCounterSubset : Object, IDistanceCounterCollection, IDistancesHost, IDisposable

Constructors

DistanceCounterSubset(IDistanceCounterCollection)

Initializes a new instance of the DistanceCounterSubset class.

Declaration

public DistanceCounterSubset(IDistanceCounterCollection trackedParentCollection)

Parameters

Type	Name	Description
IDistanceCounterCollection	trackedParentCollection	The parent collection for which a subset is "tracked".

Properties

Count

The raw number of entities (lines, rows or columns).

Declaration

public int Count { get; set; }

Property Value

Type
System.Int32

DefaultDistance

The default distance (row height or column width) an entity spans

Declaration

public double DefaultDistance { get; set; }

Property Value

Type
System.Double

Distances

Declaration

public IDistanceCounterCollection Distances { get; }

Property Value

Type
IDistanceCounterCollection

End

Gets or sets the ending index of this collection in the parent collection.

Declaration

public int End { get; }

Property Value

Type	Description
System.Int32	The start.

Item[Int32]

Gets or sets the distance for an entity.

Declaration

public double this[int index] { get; set; }

Parameters

Type	Name	Description
System.Int32	index

Property Value

Type
System.Double

Start

Gets or sets the starting index of this collection in the parent collection.

Declaration

public int Start { get; set; }

Property Value

Type	Description
System.Int32	The start.

TotalDistance

The total distance all entities span (e.g. total height of all rows in grid)

Declaration

public double TotalDistance { get; }

Property Value

Type
System.Double

Methods

Clear()

Restores the distances in the parent collection for this subset to their default distance.

Declaration

public void Clear()

ConnectWithParent(ITreeTableCounterSource)

This method is not supported for DistanceCounterSubset.

Declaration

public void ConnectWithParent(ITreeTableCounterSource treeTableCounterSource)

Parameters

Type	Name	Description
ITreeTableCounterSource	treeTableCounterSource	The nested tree table visible counter source.

Dispose()

Declaration

public void Dispose()

Dispose(Boolean)

Declaration

protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing

GetAlignedScrollValue(Double)

Gets the aligned scroll value which is the starting point of the entity found at the given distance position.

Declaration

public double GetAlignedScrollValue(double point)

Parameters

Type	Name	Description
System.Double	point	The point.

Returns

Type	Description
System.Double	The starting point of the entity.

GetCumulatedDistanceAt(Int32)

Gets the cumulated count of previous distances for the entity at the specifiec index. (e.g. return pixel position for a row index).

Declaration

public double GetCumulatedDistanceAt(int index)

Parameters

Type	Name	Description
System.Int32	index	The entity index.

Returns

Type	Description
System.Double	The cumulated count of previous distances for the entity at the specifiec index.

GetNestedDistances(Int32)

Gets the nested entities at a given index. If the index does not hold a mested distances collection the method returns null.

Declaration

public IDistanceCounterCollection GetNestedDistances(int index)

Parameters

Type	Name	Description
System.Int32	index	The index.

Returns

Type	Description
IDistanceCounterCollection	The nested collection or null.

GetNextScrollValue(Double)

Gets the distance position of the next entity after a given point.

Declaration

public double GetNextScrollValue(double point)

Parameters

Type	Name	Description
System.Double	point	The point.

Returns

Type	Description
System.Double	The distance position.

GetNextVisibleIndex(Int32)

Skip subsequent entities for which the distance is 0.0 and return the next entity.

Declaration

public int GetNextVisibleIndex(int index)

Parameters

Type	Name	Description
System.Int32	index

Returns

Type
System.Int32

GetPreviousScrollValue(Double)

Gets the distance position of the entity preceeding a given point. If the point is in between entities the starting point of the matching entity is returned.

Declaration

public double GetPreviousScrollValue(double point)

Parameters

Type	Name	Description
System.Double	point	The point.

Returns

Type	Description
System.Double	The distance position.

GetPreviousVisibleIndex(Int32)

Skip previous entities for which the distance is 0.0 and return the next entity.

Declaration

public int GetPreviousVisibleIndex(int index)

Parameters

Type	Name	Description
System.Int32	index

Returns

Type
System.Int32

IndexOfCumulatedDistance(Double)

Gets the index of an entity in this collection for which the cumulated count of previous distances is greater or equal the specified cumulatedDistance. (e.g. return row index for pixel position).

Declaration

public int IndexOfCumulatedDistance(double cumulatedDistance)

Parameters

Type	Name	Description
System.Double	cumulatedDistance	The cumulated count of previous distances.

Returns

Type	Description
System.Int32	The entity index.

Insert(Int32, Int32)

Insert entities in the collection.

Declaration

public void Insert(int insertAt, int count)

Parameters

Type	Name	Description
System.Int32	insertAt	Insert position.
System.Int32	count	The number of entities to be inserted.

Remove(Int32, Int32)

Removes enities from the collection.

Declaration

public void Remove(int removeAt, int count)

Parameters

Type	Name	Description
System.Int32	removeAt	Index of the first entity to be removed.
System.Int32	count	The number of entities to be removed.

ResetRange(Int32, Int32)

Resets the range by restoring the default distance for all entries in the specified range.

Declaration

public void ResetRange(int from, int to)

Parameters

Type	Name	Description
System.Int32	from	From.
System.Int32	to	To.

SetNestedDistances(Int32, IDistanceCounterCollection)

Assigns a collection with nested entities to an item.

Declaration

public void SetNestedDistances(int index, IDistanceCounterCollection nestedCollection)

Parameters

Type	Name	Description
System.Int32	index	The index.
IDistanceCounterCollection	nestedCollection	The nested collection.

SetRange(Int32, Int32, Double)

Hides a specified range of entities (lines, rows or colums)

Declaration

public void SetRange(int from, int to, double distance)

Parameters

Type	Name	Description
System.Int32	from	The index for the first entity>
System.Int32	to	The raw index for the last entity
System.Double	distance

Implements

IDistanceCounterCollection

IDistancesHost

System.IDisposable