diva.canvas.interactor

Interface SelectionModel

All Known Implementing Classes:

BasicSelectionModel

public interface SelectionModel

A model for graph selections. Listeners can add themselves to the model and are notified by SelectionEvents when the model is modified.

Version:

$Revision: 1.8 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu)

Field Summary

Fields

Modifier and Type	Field and Description
static int	MULTIPLE_SELECTION Allow multiple screen objects to be selected at once.
static int	SINGLE_SELECTION Allow only one screen object to be selected at a time.

Method Summary

Modifier and Type	Method and Description
void	addSelection(Object sel) Add an object to the selection.
void	addSelectionListener(SelectionListener l) Add a selection listener to this model.
void	addSelections(Object[] sel) Add an array of objects to the selection.
void	clearSelection() Clear the selection.
boolean	containsSelection(Object sel) Test if the selection contains the given object
Object	getFirstSelection() Return the first selection in the list.
Object	getLastSelection() Return the last selection in the list.
Iterator	getSelection() Return an iterator over the selected objects.
Object[]	getSelectionAsArray() Return the contents of the selection as an array.
int	getSelectionCount() Return the number of selected objects.
int	getSelectionMode() Return the mode of the selection, either SINGLE_SELECTION or MULTIPLE_SELECTION.
void	removeSelection(Object sel) Remove an object from the selection.
void	removeSelectionListener(SelectionListener l) Remove a listener from the list of listeners.
void	setSelectionMode(int mode) Set the selection mode, either SINGLE_SELECTION or MULTIPLE_SELECTION.

Field Detail

SINGLE_SELECTION

static final int SINGLE_SELECTION

Allow only one screen object to be selected at a time.

See Also:

Constant Field Values

MULTIPLE_SELECTION

static final int MULTIPLE_SELECTION

Allow multiple screen objects to be selected at once.

See Also:

Constant Field Values

Method Detail

addSelectionListener

void addSelectionListener(SelectionListener l)

Add a selection listener to this model.

addSelection

void addSelection(Object sel)

Add an object to the selection. The model should highlight the selection.

addSelections

void addSelections(Object[] sel)

Add an array of objects to the selection. the model should highlight the selected objects.

clearSelection

void clearSelection()

Clear the selection. The model should remove highlighting from the previously selected objects.

containsSelection

boolean containsSelection(Object sel)

Test if the selection contains the given object

getFirstSelection

Object getFirstSelection()

Return the first selection in the list.

getLastSelection

Object getLastSelection()

Return the last selection in the list.

getSelection

Iterator getSelection()

Return an iterator over the selected objects.

getSelectionAsArray

Object[] getSelectionAsArray()

Return the contents of the selection as an array. This method is typically used by clients that need to pass the selection contents to another object that does not know about selection models, and which needs to traverse the selection contents multiple times.

getSelectionCount

int getSelectionCount()

Return the number of selected objects.

getSelectionMode

int getSelectionMode()

Return the mode of the selection, either SINGLE_SELECTION or MULTIPLE_SELECTION.

removeSelectionListener

void removeSelectionListener(SelectionListener l)

Remove a listener from the list of listeners.

removeSelection

void removeSelection(Object sel)

Remove an object from the selection. The model should also remove highlighting from the objects.

setSelectionMode

void setSelectionMode(int mode)

Set the selection mode, either SINGLE_SELECTION or MULTIPLE_SELECTION.