Package org.luwrain.controls

Class ListUtils.DoubleLevelTransition<E>

java.lang.Object

org.luwrain.controls.ListUtils.DefaultTransition

org.luwrain.controls.ListUtils.DoubleLevelTransition<E>

All Implemented Interfaces:

ListArea.Transition

Direct Known Subclasses:

WebSearchPopup.Transition

Enclosing class:

ListUtils

public abstract static class ListUtils.DoubleLevelTransition<E>
extends ListUtils.DefaultTransition

Nested Class Summary

Nested classes/interfaces inherited from interface org.luwrain.controls.ListArea.Transition

ListArea.Transition.State, ListArea.Transition.Type

Field Summary

Fields

Modifier and Type	Field	Description
protected final ListArea.Model<E>	model

Fields inherited from class org.luwrain.controls.ListUtils.DefaultTransition

PAGE_SIZE

Constructor Summary

Constructors

Constructor	Description
DoubleLevelTransition(ListArea.Model<E> model)

Method Summary

Modifier and Type	Method	Description
abstract boolean	isSectionItem(E item)
ListArea.Transition.State	transition(ListArea.Transition.Type type, ListArea.Transition.State fromState, int itemCount, boolean hasEmptyLineTop, boolean hasEmptyLineBottom)	Computes the new state after a navigation action.

Methods inherited from class java.lang.Object

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

Field Details

model

protected final ListArea.Model<E> model

Constructor Details

DoubleLevelTransition

public DoubleLevelTransition(ListArea.Model<E> model)

Method Details

isSectionItem

public abstract boolean isSectionItem(E item)

transition

public ListArea.Transition.State transition(ListArea.Transition.Type type,
 ListArea.Transition.State fromState,
 int itemCount,
 boolean hasEmptyLineTop,
 boolean hasEmptyLineBottom)

Description copied from interface: ListArea.Transition

Computes the new state after a navigation action.

Specified by:

transition in interface ListArea.Transition

Overrides:

transition in class ListUtils.DefaultTransition

Parameters:

type - the type of navigation action

fromState - the current state of the hot point

itemCount - the total number of items in the model

hasEmptyLineTop - whether the list has a top empty line

hasEmptyLineBottom - whether the list has a bottom empty line

Returns:

the new state after the transition; never null