SelectionTracker.SelectionObserver
abstract class SelectionTracker.SelectionObserver<K>
Observer class providing access to information about Selection state changes.
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<K> |
Selection key type. @see |
Summary
Public constructors |
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Public functions |
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Unit |
onItemStateChanged(key: K, selected: Boolean)Called when the state of an item has been changed. |
Unit |
Called immediately after completion of any set of changes, excluding those resulting in calls to |
Unit |
Called when the underlying data set has changed. |
Unit |
Called immediately after selection is restored. |
Public constructors
Public functions
onItemStateChanged
fun onItemStateChanged(key: K, selected: Boolean): Unit
Called when the state of an item has been changed.
onSelectionChanged
fun onSelectionChanged(): Unit
Called immediately after completion of any set of changes, excluding those resulting in calls to onSelectionRefresh and onSelectionRestored.
onSelectionRefresh
fun onSelectionRefresh(): Unit
Called when the underlying data set has changed. After this method is called SelectionTracker will traverse the existing selection, calling onItemStateChanged for each selected item, and deselecting any items that cannot be selected given the updated data-set (and after consulting SelectionPredicate).
onSelectionRestored
fun onSelectionRestored(): Unit
Called immediately after selection is restored. onItemStateChanged will *not* be called for individual items in the selection.