DataBufferObserverSet

Kotlin |Java

public final class DataBufferObserverSet implements DataBufferObserver, DataBufferObserver.Observable

Utility class for managing a set of observers and distributing their notifications.

See also
`DataBufferObserver`

Summary

Public constructors
`DataBufferObserverSet()`

Public methods
`void`	`addObserver(DataBufferObserver observer)` Register the given observer for receiving change notifications.
`void`	`clear()` Clears the set of observers.
`boolean`	`hasObservers()` Returns true if this has any registered observers.
`void`	`onDataChanged()` Called when the overall data changes.
`void`	`onDataRangeChanged(int position, int count)` Called when a range of items changes.
`void`	`onDataRangeInserted(int position, int count)` Called when a range of items is inserted.
`void`	`onDataRangeMoved(int fromPosition, int toPosition, int count)` Called when a range of items is moved.
`void`	`onDataRangeRemoved(int position, int count)` Called when a range of items is removed.
`void`	`removeObserver(DataBufferObserver observer)` Unregister the given observer from receiving change notifications.

public DataBufferObserverSet()

public void addObserver(DataBufferObserver observer)

public void clear()

Clears the set of observers.

public boolean hasObservers()

Returns true if this has any registered observers.

public void onDataChanged()

Called when the overall data changes.

public void onDataRangeChanged(int position, int count)

Called when a range of items changes.

public void onDataRangeInserted(int position, int count)

Called when a range of items is inserted.

public void onDataRangeMoved(int fromPosition, int toPosition, int count)

Called when a range of items is moved.

public void onDataRangeRemoved(int position, int count)

Called when a range of items is removed.

public void removeObserver(DataBufferObserver observer)

Unregister the given observer from receiving change notifications.