
public final class SelectionHelper<T extends Object, P extends Position2D<P>>

Manages multi-element selection and click-selection.

Nested Classes
Modifier and Type	Class	Description
`public final class`	`SelectionHelper.SelectionBox`	Allows basic multi-element box selections.

Fields
Modifier and Type	Field	Description
`private Boolean`	`isBoxSelectionInProgress`
`private final Rectangle`	`rectangle`

Constructors
Constructor	Description
`SelectionHelper()`

Enum Constants
Enum Constant	Description

Modifier and Type	Method	Description
`final Boolean`	`getIsBoxSelectionInProgress()`	Returns whether a box selection is currently occurring.
`final Unit`	`setIsBoxSelectionInProgress(Boolean isBoxSelectionInProgress)`
`final Rectangle`	`getRectangle()`
`final SelectionHelper<T, P>`	`begin(Point point)`	Begins a new selection at the given point.
`final SelectionHelper<T, P>`	`update(Point point)`	Updates the selection with a new point.
`final Unit`	`close()`	Closes the selection.
`final Pair<Node<T>, P>`	`clickSelection(Map<Node<T>, P> nodes, Wormhole2D<P> wormhole)`	Retrieves the element selected by clicking.
`final Map<Node<T>, P>`	`boxSelection(Map<Node<T>, P> nodes, Wormhole2D<P> wormhole)`	Retrieves the elements selected by box selection, thus possibly empty.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

getIsBoxSelectionInProgress
```
 final Boolean getIsBoxSelectionInProgress()
```
Returns whether a box selection is currently occurring.

 final Unit setIsBoxSelectionInProgress(Boolean isBoxSelectionInProgress)

 final SelectionHelper<T, P> begin(Point point)

Begins a new selection at the given point.

 final SelectionHelper<T, P> update(Point point)

Updates the selection with a new point.

clickSelection
```
 final Pair<Node<T>, P> clickSelection(Map<Node<T>, P> nodes, Wormhole2D<P> wormhole)
```
Retrieves the element selected by clicking. If selection was not done by clicking, null.

 final Map<Node<T>, P> boxSelection(Map<Node<T>, P> nodes, Wormhole2D<P> wormhole)

Retrieves the elements selected by box selection, thus possibly empty.

Class SelectionHelper