com.facebook.rendercore

Class Host

java.lang.Object

ViewGroup

com.facebook.rendercore.Host

Direct Known Subclasses:

ComponentHost

public abstract class Host
extends ViewGroup

Constructor Summary

Constructors

Constructor and Description
Host(Context context, AttributeSet attrs)

Method Summary

Modifier and Type	Method and Description
abstract MountItem	getMountItemAt(int index)
abstract int	getMountItemCount()
abstract void	mount(int index, MountItem mountItem) Mounts the given MountItem with unique index.
abstract void	moveItem(MountItem item, int oldIndex, int newIndex) Moves the MountItem associated to oldIndex in the newIndex position.
abstract void	unmount(int index, MountItem mountItem) Unmounts the given MountItem with unique index.
abstract void	unmount(MountItem mountItem) Unmounts the given MountItem

Methods inherited from class java.lang.Object

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

Constructor Detail

Host

public Host(Context context,
            AttributeSet attrs)

Method Detail

mount

public abstract void mount(int index,
                           MountItem mountItem)

Mounts the given MountItem with unique index.

Parameters:

index - index of the MountItem. Guaranteed to be the same index as is passed for the corresponding unmount(index, mountItem) call.

mountItem - item to be mounted into the host.

unmount

public abstract void unmount(MountItem mountItem)

Unmounts the given MountItem

Parameters:

mountItem - item to be unmounted from the host.

unmount

public abstract void unmount(int index,
                             MountItem mountItem)

Unmounts the given MountItem with unique index.

Parameters:

index - index of the MountItem. Guaranteed to be the same index as was passed for the corresponding mount(index, mountItem) call.

mountItem - item to be unmounted from the host.

getMountItemCount

public abstract int getMountItemCount()

Returns:

number of MountItems that are currently mounted in the host.

getMountItemAt

public abstract MountItem getMountItemAt(int index)

Returns:

the MountItem that was mounted with the given index.

moveItem

public abstract void moveItem(MountItem item,
                              int oldIndex,
                              int newIndex)

Moves the MountItem associated to oldIndex in the newIndex position. This happens when a RootHostView needs to re-arrange the internal order of its items. If an item is already present in newIndex the item is guaranteed to be either unmounted or moved to a different index by subsequent calls to either unmount(int, MountItem) or moveItem(MountItem, int, int).

Parameters:

item - The item that has been moved.

oldIndex - The current index of the MountItem.

newIndex - The new index of the MountItem.