com.facebook.litho.sections

Class Change

java.lang.Object

com.facebook.litho.sections.Change

public final class Change
extends Object

A Change represent a single operation in a section's ChangeSet. A Change can be one of Insert, Update or Delete. When creating a Change an index at which the Change will be applied has to be specified. The index is local in the DiffSectionSpec coordinates. So to insert a new item represented by a given Component in any give ChangeSetSpec at the top, a change would have to be created with Change.insert(0, component);

Field Summary

Fields

Modifier and Type	Field and Description
static int	DELETE
static int	DELETE_RANGE
static int	INSERT
static int	INSERT_RANGE
static int	MOVE
static int	UPDATE
static int	UPDATE_RANGE

Constructor Summary

Constructors

Constructor and Description
Change(int ct, int index, int toIndex, int count, RenderInfo renderInfo, List<RenderInfo> renderInfos, List<?> prevData, List<?> nextData)

Method Summary

Modifier and Type	Method and Description
static String	changeTypeToString(int type)
int	getCount()
int	getIndex()
List<?>	getNextData()
List<?>	getPrevData()
RenderInfo	getRenderInfo()
List<RenderInfo>	getRenderInfos()
int	getToIndex()
int	getType()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSERT

public static final int INSERT

See Also:

Constant Field Values

INSERT_RANGE

public static final int INSERT_RANGE

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Constant Field Values

UPDATE

public static final int UPDATE

See Also:

Constant Field Values

UPDATE_RANGE

public static final int UPDATE_RANGE

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Constant Field Values

DELETE

public static final int DELETE

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Constant Field Values

DELETE_RANGE

public static final int DELETE_RANGE

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Constant Field Values

MOVE

public static final int MOVE

See Also:

Constant Field Values

Constructor Detail

Change

public Change(int ct,
              int index,
              int toIndex,
              int count,
              RenderInfo renderInfo,
              List<RenderInfo> renderInfos,
              List<?> prevData,
              List<?> nextData)

Method Detail

getType

public int getType()

Returns:

the type of this Change.

getIndex

public int getIndex()

Returns:

the index at which this change will be applied.

getToIndex

public int getToIndex()

Returns:

the index to which this change will move its item. This is only valid if type is MOVE.

getCount

public int getCount()

Returns:

the number of changes to be made. This is only valid if type is *_RANGE.

getRenderInfo

public RenderInfo getRenderInfo()

Returns:

the Component that will render this Change (if this Change is either an INSERT or an UPDATE).

getRenderInfos

public List<RenderInfo> getRenderInfos()

getPrevData

public List<?> getPrevData()

getNextData

public List<?> getNextData()

changeTypeToString

public static String changeTypeToString(int type)