Class LineSizeCollection
A collection that manages lines with varying height and hidden state. It has properties for header and footer lines, total line count, default size of a line and also lets you add nested collections.
Implements
Namespace: Syncfusion.UI.Xaml.Grids.ScrollAxis
Assembly: Syncfusion.GridCommon.WinUI.dll
Syntax
public class LineSizeCollection : Object, IPaddedEditableLineSizeHost, IEditableLineSizeHost, ILineSizeHost, IDistancesHost, INestedDistancesHost, IDisposable
Constructors
LineSizeCollection()
Declaration
public LineSizeCollection()
Fields
Empty
Returns an empty collection.
Declaration
public static readonly LineSizeCollection Empty
Field Value
Type |
---|
LineSizeCollection |
Properties
DefaultLineSize
Gets or sets the default size of lines.
Declaration
public double DefaultLineSize { get; set; }
Property Value
Type | Description |
---|---|
System.Double | The default size of lines. |
Distances
Gets or sets the distances.
Declaration
public virtual IDistanceCounterCollection Distances { get; }
Property Value
Type | Description |
---|---|
IDistanceCounterCollection | The distances. |
FooterLineCount
Gets or sets the footer line count.
Declaration
public int FooterLineCount { get; set; }
Property Value
Type | Description |
---|---|
System.Int32 | The footer line count. |
HeaderLineCount
Gets or sets the header line count.
Declaration
public int HeaderLineCount { get; set; }
Property Value
Type | Description |
---|---|
System.Int32 | The header line count. |
Item[Int32]
Gets or sets the line size at the specified index.
Declaration
public double this[int index] { get; set; }
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | index |
Property Value
Type |
---|
System.Double |
LineCount
Gets or sets the line count.
Declaration
public int LineCount { get; set; }
Property Value
Type | Description |
---|---|
System.Int32 | The line count. |
PaddingDistance
Declaration
public double PaddingDistance { get; set; }
Property Value
Type |
---|
System.Double |
SupportsInsertRemove
Gets whether the host supports inserting and removing lines.
Declaration
public bool SupportsInsertRemove { get; }
Property Value
Type |
---|
System.Boolean |
SupportsNestedLines
Gets whether the host supports nesting.
Declaration
public bool SupportsNestedLines { get; }
Property Value
Type |
---|
System.Boolean |
TotalExtent
Gets the total extent which is the total of all line sizes. Note: This propert only works if the DistanceCollection has been setup for pixel scrolling; otherwise it returns double.NaN.
Declaration
public virtual double TotalExtent { get; }
Property Value
Type | Description |
---|---|
System.Double | The total extent or double.NaN. |
Methods
add_DefaultLineSizeChanged(DefaultLineSizeChangedEventHandler)
Declaration
public virtual void add_DefaultLineSizeChanged(DefaultLineSizeChangedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
DefaultLineSizeChangedEventHandler | value |
add_LineHiddenChanged(HiddenRangeChangedEventHandler)
Declaration
public virtual void add_LineHiddenChanged(HiddenRangeChangedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
HiddenRangeChangedEventHandler | value |
add_LinesInserted(LinesInsertedEventHandler)
Declaration
public virtual void add_LinesInserted(LinesInsertedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
LinesInsertedEventHandler | value |
add_LineSizeChanged(RangeChangedEventHandler)
Declaration
public virtual void add_LineSizeChanged(RangeChangedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
RangeChangedEventHandler | value |
add_LinesRemoved(LinesRemovedEventHandler)
Declaration
public virtual void add_LinesRemoved(LinesRemovedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
LinesRemovedEventHandler | value |
CreateMoveLines()
Creates the object which holds temporary state when moving lines.
Declaration
public IEditableLineSizeHost CreateMoveLines()
Returns
Type |
---|
IEditableLineSizeHost |
DeferRefresh()
Declaration
public IDisposable DeferRefresh()
Returns
Type |
---|
System.IDisposable |
Dispose()
Declaration
public void Dispose()
Dispose(Boolean)
Declaration
protected virtual void Dispose(bool disposing)
Parameters
Type | Name | Description |
---|---|---|
System.Boolean | disposing |
GetDefaultLineSize()
Returns the default line size.
Declaration
public virtual double GetDefaultLineSize()
Returns
Type |
---|
System.Double |
GetDistances(Int32)
Gets the nested distances if a line contains a nested lines collection; null otherwise.
Declaration
public IDistanceCounterCollection GetDistances(int line)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | line | The line. |
Returns
Type |
---|
IDistanceCounterCollection |
GetFooterLineCount()
Gets the footer line count.
Declaration
public virtual int GetFooterLineCount()
Returns
Type |
---|
System.Int32 |
GetHeaderLineCount()
Gets the header line count.
Declaration
public virtual int GetHeaderLineCount()
Returns
Type |
---|
System.Int32 |
GetHidden(Int32, out Int32)
Gets the hidden state for a line.
Declaration
public virtual bool GetHidden(int index, out int repeatValueCount)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | index | The index. |
System.Int32 | repeatValueCount | The number of subsequent lines with same state. |
Returns
Type |
---|
System.Boolean |
GetLineCount()
Returns the line count.
Declaration
public virtual int GetLineCount()
Returns
Type |
---|
System.Int32 |
GetNestedLines(Int32)
Gets the nested lines.
Declaration
public IEditableLineSizeHost GetNestedLines(int index)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | index | The index. |
Returns
Type |
---|
IEditableLineSizeHost |
GetSize(Int32, out Int32)
Gets the size.
Declaration
public virtual double GetSize(int index, out int repeatValueCount)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | index | The index. |
System.Int32 | repeatValueCount | The number of subsequent values with same size. |
Returns
Type |
---|
System.Double |
InitializeScrollAxis(ScrollAxisBase)
Initializes the scroll axis.
Declaration
public virtual void InitializeScrollAxis(ScrollAxisBase scrollAxis)
Parameters
Type | Name | Description |
---|---|---|
ScrollAxisBase | scrollAxis | The scroll axis. |
InsertLines(Int32, Int32)
Inserts lines in the collection and raises the LinesInserted event.
Declaration
public void InsertLines(int insertAtLine, int count)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | insertAtLine | The index of the first line to insert. |
System.Int32 | count | The count. |
InsertLines(Int32, Int32, IEditableLineSizeHost)
Inserts lines in the collection and raises the LinesInserted event.
Declaration
public void InsertLines(int insertAtLine, int count, IEditableLineSizeHost movelines)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | insertAtLine | The index of the first line to insert. |
System.Int32 | count | The count. |
IEditableLineSizeHost | movelines | A container with saved state from a preceeding call when lines should be moved. When it is null empty lines with default size are inserted. |
remove_DefaultLineSizeChanged(DefaultLineSizeChangedEventHandler)
Declaration
public virtual void remove_DefaultLineSizeChanged(DefaultLineSizeChangedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
DefaultLineSizeChangedEventHandler | value |
remove_LineHiddenChanged(HiddenRangeChangedEventHandler)
Declaration
public virtual void remove_LineHiddenChanged(HiddenRangeChangedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
HiddenRangeChangedEventHandler | value |
remove_LinesInserted(LinesInsertedEventHandler)
Declaration
public virtual void remove_LinesInserted(LinesInsertedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
LinesInsertedEventHandler | value |
remove_LineSizeChanged(RangeChangedEventHandler)
Declaration
public virtual void remove_LineSizeChanged(RangeChangedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
RangeChangedEventHandler | value |
remove_LinesRemoved(LinesRemovedEventHandler)
Declaration
public virtual void remove_LinesRemoved(LinesRemovedEventHandler value)
Parameters
Type | Name | Description |
---|---|---|
LinesRemovedEventHandler | value |
RemoveLines(Int32, Int32)
Removes lines from the collection and raises the LinesRemoved event.
Declaration
public void RemoveLines(int removeAtLine, int count)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | removeAtLine | The index of the first line to be removed. |
System.Int32 | count | The count. |
RemoveLines(Int32, Int32, IEditableLineSizeHost)
Removes lines from the collection and raises the LinesRemoved event.
Declaration
public void RemoveLines(int removeAtLine, int count, IEditableLineSizeHost movelines)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | removeAtLine | The index of the first line to be removed. |
System.Int32 | count | The count. |
IEditableLineSizeHost | movelines | A container to save state for a subsequent call when lines should be moved. |
ResetHiddenState()
Declaration
public void ResetHiddenState()
ResetNestedLines()
Reset the line to become a normal (not nested) line with default line size.
Declaration
public void ResetNestedLines()
ResetNestedLines(Int32)
Reset the line to become a normal (not nested) line with default line size.
Declaration
public void ResetNestedLines(int index)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | index | The index. |
ResumeUpdates()
Declaration
public void ResumeUpdates()
SetHidden(Int32, Int32, Boolean)
Sets the hidden state for a range of lines.
Declaration
public void SetHidden(int from, int to, bool hide)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | from | From. |
System.Int32 | to | To. |
System.Boolean | hide | if set to |
SetHiddenInterval(Int32, Int32, Boolean[])
Initialize the collection with a pattern of hidden lines.
Declaration
public void SetHiddenInterval(int start, int lineCount, bool[] values)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | start | The index of the first line where the pattern should be started to be applied. |
System.Int32 | lineCount | The pattern is applied up to until the lineCount given. The last initialized line is at index lineCount-1. |
System.Boolean[] | values | The pattern that is applied repeatedly. |
SetHiddenIntervalWithState(Int32, Int32, Boolean[])
Declaration
public void SetHiddenIntervalWithState(int start, int lineCount, bool[] values)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | start | |
System.Int32 | lineCount | |
System.Boolean[] | values |
SetHiddenState(Boolean[])
Set the hidden state all at once in one operation. Use this method if you want to change the hidden state of many rows at once since this will be much faster instead of individually setting rows hidden.
Declaration
public void SetHiddenState(bool[] values)
Parameters
Type | Name | Description |
---|---|---|
System.Boolean[] | values | The new hidden state for rows. |
SetNestedLines(Int32, IEditableLineSizeHost)
Sets the nested lines.
Declaration
public void SetNestedLines(int index, IEditableLineSizeHost nestedLines)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | index | The index. |
IEditableLineSizeHost | nestedLines | The nested lines. If parameter is null the line will be converted to a normal (not nested) line with default line size. |
SetRange(Int32, Int32, Double)
Sets the line size for a range.
Declaration
public void SetRange(int from, int to, double size)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | from | From. |
System.Int32 | to | To. |
System.Double | size | The size. |
SuspendUpdates()
Declaration
public void SuspendUpdates()
Events
DefaultLineSizeChanged
Occurs when the default line size changed.
Declaration
public virtual event DefaultLineSizeChangedEventHandler DefaultLineSizeChanged
Event Type
Type |
---|
DefaultLineSizeChangedEventHandler |
FooterLineCountChanged
Occurs when the footer line count was changed.
Declaration
public virtual event EventHandler FooterLineCountChanged
Event Type
Type |
---|
System.EventHandler |
HeaderLineCountChanged
Occurs when the header line count was changed.
Declaration
public virtual event EventHandler HeaderLineCountChanged
Event Type
Type |
---|
System.EventHandler |
LineCountChanged
Occurs when the line count was changed.
Declaration
public virtual event EventHandler LineCountChanged
Event Type
Type |
---|
System.EventHandler |
LineHiddenChanged
Occurs when a lines hidden state changed.
Declaration
public virtual event HiddenRangeChangedEventHandler LineHiddenChanged
Event Type
Type |
---|
HiddenRangeChangedEventHandler |
LinesInserted
Occurs when lines were inserted.
Declaration
public virtual event LinesInsertedEventHandler LinesInserted
Event Type
Type |
---|
LinesInsertedEventHandler |
LineSizeChanged
Occurs when a lines size was changed.
Declaration
public virtual event RangeChangedEventHandler LineSizeChanged
Event Type
Type |
---|
RangeChangedEventHandler |
LinesRemoved
Occurs when lines were removed.
Declaration
public virtual event LinesRemovedEventHandler LinesRemoved
Event Type
Type |
---|
LinesRemovedEventHandler |