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
Namespace: Syncfusion.UI.Xaml.ScrollAxis
Assembly: Syncfusion.SfGrid.UWP.dll
Syntax
public class DistanceCounterSubset : Object, IDistanceCounterCollection, IDistancesHost, IDisposableConstructors
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 | Description |
|---|---|
| System.Int32 |
DefaultDistance
The default distance (row height or column width) an entity spans
Declaration
public double DefaultDistance { get; set; }Property Value
| Type | Description |
|---|---|
| System.Double |
Distances
Declaration
public IDistanceCounterCollection Distances { get; }Property Value
| Type | Description |
|---|---|
| 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 | Description |
|---|---|
| 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 | Description |
|---|---|
| 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 isDisposing)Parameters
| Type | Name | Description |
|---|---|---|
| System.Boolean | isDisposing |
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 | Description |
|---|---|
| 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 | Description |
|---|---|
| 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 |