com.thoughtbot.expandablerecyclerview.models

Class ExpandableList

java.lang.Object

com.thoughtbot.expandablerecyclerview.models.ExpandableList

public class ExpandableList
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
boolean[]	expandedGroupIndexes
java.util.List<? extends ExpandableGroup>	groups

Constructor Summary

Constructors

Constructor and Description
ExpandableList(java.util.List<? extends ExpandableGroup> groups)

Method Summary

Modifier and Type	Method and Description
ExpandableGroup	getExpandableGroup(ExpandableListPosition listPosition) Translates either a group pos or a child pos to an ExpandableGroup.
int	getExpandableGroupItemCount(ExpandableListPosition listPosition)
int	getFlattenedChildIndex(ExpandableListPosition listPosition) Converts a child position to a flat list position.
int	getFlattenedChildIndex(int groupIndex, int childIndex) Converts the details of a child's position to a flat list position.
int	getFlattenedChildIndex(long packedPosition) Converts a child position to a flat list position.
int	getFlattenedFirstChildIndex(ExpandableListPosition listPosition)
int	getFlattenedFirstChildIndex(int groupIndex)
int	getFlattenedGroupIndex(ExpandableGroup group)
int	getFlattenedGroupIndex(ExpandableListPosition listPosition)
int	getFlattenedGroupIndex(int groupIndex)
ExpandableListPosition	getUnflattenedPosition(int flPos) Translates a flat list position (the raw position of an item (child or group) in the list) to either a) group pos if the specified flat list position corresponds to a group, or b) child pos if it corresponds to a child.
int	getVisibleItemCount()

Methods inherited from class java.lang.Object

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

Field Detail

groups

public java.util.List<? extends ExpandableGroup> groups

expandedGroupIndexes

public boolean[] expandedGroupIndexes

Constructor Detail

ExpandableList

public ExpandableList(java.util.List<? extends ExpandableGroup> groups)

Method Detail

getVisibleItemCount

public int getVisibleItemCount()

Returns:

the total number visible rows

getUnflattenedPosition

public ExpandableListPosition getUnflattenedPosition(int flPos)

Translates a flat list position (the raw position of an item (child or group) in the list) to either a) group pos if the specified flat list position corresponds to a group, or b) child pos if it corresponds to a child. Performs a binary search on the expanded groups list to find the flat list pos if it is an exp group, otherwise finds where the flat list pos fits in between the exp groups.

Parameters:

flPos - the flat list position to be translated

Returns:

the group position or child position of the specified flat list position encompassed in a ExpandableListPosition object that contains additional useful info for insertion, etc.

getFlattenedGroupIndex

public int getFlattenedGroupIndex(ExpandableListPosition listPosition)

Parameters:

listPosition - representing either a child or a group

Returns:

the index of a group within the getVisibleItemCount()

getFlattenedGroupIndex

public int getFlattenedGroupIndex(int groupIndex)

Parameters:

groupIndex - representing the index of a group within groups

Returns:

the index of a group within the getVisibleItemCount()

getFlattenedGroupIndex

public int getFlattenedGroupIndex(ExpandableGroup group)

Parameters:

group - an ExpandableGroup within groups

Returns:

the index of a group within the getVisibleItemCount() or 0 if the groups.indexOf cannot find the group

getFlattenedChildIndex

public int getFlattenedChildIndex(long packedPosition)

Converts a child position to a flat list position.

Parameters:

packedPosition - The child positions to be converted in it's packed position representation.

Returns:

The flat list position for the given child

getFlattenedChildIndex

public int getFlattenedChildIndex(ExpandableListPosition listPosition)

Converts a child position to a flat list position.

Parameters:

listPosition - The child positions to be converted in it's ExpandableListPosition representation.

Returns:

The flat list position for the given child

getFlattenedChildIndex

public int getFlattenedChildIndex(int groupIndex,
                                  int childIndex)

Converts the details of a child's position to a flat list position.

Parameters:

groupIndex - The index of a group within groups

childIndex - the index of a child within it's ExpandableGroup

Returns:

The flat list position for the given child

getFlattenedFirstChildIndex

public int getFlattenedFirstChildIndex(int groupIndex)

Parameters:

groupIndex - The index of a group within groups

Returns:

The flat list position for the first child in a group

getFlattenedFirstChildIndex

public int getFlattenedFirstChildIndex(ExpandableListPosition listPosition)

Parameters:

listPosition - The child positions to be converted in it's ExpandableListPosition representation.

Returns:

The flat list position for the first child in a group

getExpandableGroupItemCount

public int getExpandableGroupItemCount(ExpandableListPosition listPosition)

Parameters:

listPosition - An ExpandableListPosition representing either a child or group

Returns:

the total number of children within the group associated with the @param listPosition

getExpandableGroup

public ExpandableGroup getExpandableGroup(ExpandableListPosition listPosition)

Translates either a group pos or a child pos to an ExpandableGroup. If the ExpandableListPosition is a child position, it returns the ExpandableGroup it belongs to

Parameters:

listPosition - a ExpandableListPosition representing either a group position or child position

Returns:

the ExpandableGroup object that contains the listPosition