brf.j2me.dynaworks.ui
Class RadioGroup

java.lang.Object
  |
  +--brf.j2me.dynaworks.ui.RadioGroup

public class RadioGroup

extends java.lang.Object

RadioGroups contain two or more radio buttons. Only one RadioButton can be selected at any time.

Version:

1.0

Author:

Bernd R. Fix

See Also:

RadioButton

Field Summary

private java.util.Vector	buttonList list of associated RadioButtons.
private RadioButton	selected index of active radio button.

Constructor Summary

RadioGroup()
constructor.

Method Summary

boolean	add(RadioButton button) add a radio button to the group.
RadioButton	buttonAt(int idx) get the radio button at a specific position in the list.
void	dispose() clean-up.
RadioButton	getSelected() get the currently active radio button.
ActionEvent	handleSelection(RadioButton button) handle the user-invoked selection of a radio button under control.
void	setSelected(RadioButton button) set the selected radio button.
int	size() get the number of radio buttons in this group.

Methods inherited from class java.lang.Object

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

Field Detail

buttonList

private java.util.Vector buttonList

list of associated RadioButtons.

selected

private RadioButton selected

index of active radio button.

Constructor Detail

RadioGroup

public RadioGroup()

constructor.

Method Detail

add

public boolean add(RadioButton button)

add a radio button to the group.

Parameters:

button - RadioButton - control to be added.

Returns:

boolean - successful operation?

See Also:

RadioButton

size

public int size()

get the number of radio buttons in this group.

Returns:

int - number of radio buttons?.

getSelected

public RadioButton getSelected()

get the currently active radio button.

Returns:

RadioButton - active radio button.

See Also:

RadioButton

setSelected

public void setSelected(RadioButton button)

set the selected radio button.

Parameters:

button - RadioButton - radio button to be activated.

See Also:

RadioButton

buttonAt

public RadioButton buttonAt(int idx)

get the radio button at a specific position in the list.

Parameters:

idx - int - index of requested radio button.

Returns:

RadioButton - requested radio button.

See Also:

RadioButton

handleSelection

public ActionEvent handleSelection(RadioButton button)

handle the user-invoked selection of a radio button under control.

Parameters:

button - RadioButton - radio button that is invoked by the user.

Returns:

ActionEvent - generated event based on action.

See Also:

RadioButton, ActionEvent

dispose

public void dispose()

clean-up. free all references to radio buttons.