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Java Source Code / Java Documentation » Swing Library » wings3 » org.wings

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.wings .SButtonGroup

SButtonGroup

public class SButtonGroup implements SDelayedEventModel,Serializable(Code)

Used to create a multiple-exclusion scope for a set of buttons.

Creating a set of buttons with the same ButtonGroup object means that turning "on" one of those buttons turns off all other buttons in the group.

A SButtonGroup can be used with any set of objects that inherit from SAbstractButton , because they support the selected state.

Initially, all buttons in the group are unselected. Once any button is selected, one button is always selected in the group. There is no way to turn a button programmatically to "off", in order to clear the button group.

Details:The implementation of the button group is a bit tricky for the HTML generation. In HTML, groups of components are usually formed by giving them all the same name. The problem is, that any SComponent , especially the SAbstractButton , have globally unique names. So this implementation gives all buttons in the group the name of this SButtonGroup, and sets their value to their actual name. So a bit of dispatching is already done here.
author:
Armin Haaf
See Also: javax.swing.ButtonGroup

Field Summary
final public static String	SELECTION_CHANGED
final protected ArrayList	buttons
final protected ArrayList	delayedEvents all delayed events are stored here.
final protected EventListenerList	listenerList

Constructor Summary
public	SButtonGroup()

Method Summary
public void	add(SAbstractButton button) adds a button to the group.
public void	addActionListener(ActionListener listener) Adds an action listener to this group of buttons.
protected void	fireActionEvent(ActionEvent e) Fire an ActionEvent at each registered listener.
protected void	fireActionPerformed(String command) Fire an ActionEvent at each registered listener.
public void	fireDelayedFinalEvents()
public void	fireDelayedIntermediateEvents()
public ActionListener[]	getActionListeners() Returns an array of all the `ActionListener`s added to this group of buttons with addActionListener().
final public String	getComponentId() Return a jvm wide unique id.
public boolean	getDelayEvents()
public Enumeration	getElements() Gets all the buttons the group consists of.
public String	getLowLevelEventId() Gets the id of the component.
final public SAbstractButton	getSelection() Gets the button of the group that is selected.
public boolean	isSelected(SAbstractButton button) Returns the state of the button.
public Iterator	iterator()
public void	remove(SAbstractButton button) removes a button from the group.
public void	removeActionListener(ActionListener listener)
public void	removeAll() removes all buttons from the group.
public void	setDelayEvents(boolean b)
public void	setSelected(SAbstractButton b, boolean selected) Sets a button in the selected state.
protected void	setSelection(SAbstractButton button)

Field Detail

SELECTION_CHANGED
final public static String SELECTION_CHANGED(Code)

buttons
final protected ArrayList buttons(Code)

delayedEvents
final protected ArrayList delayedEvents(Code)
	all delayed events are stored here.

listenerList
final protected EventListenerList listenerList(Code)

Constructor Detail

SButtonGroup
public SButtonGroup()(Code)

Method Detail

add
public void add(SAbstractButton button)(Code)
	adds a button to the group. Parameters: button - the button that is to be added

addActionListener
public void addActionListener(ActionListener listener)(Code)
	Adds an action listener to this group of buttons. If one of the buttons contained in this group gets selected, an action event will occur. Parameters: listener -

fireActionEvent
protected void fireActionEvent(ActionEvent e)(Code)
	Fire an ActionEvent at each registered listener.

fireActionPerformed
protected void fireActionPerformed(String command)(Code)
	Fire an ActionEvent at each registered listener.

fireDelayedFinalEvents
public void fireDelayedFinalEvents()(Code)

fireDelayedIntermediateEvents
public void fireDelayedIntermediateEvents()(Code)

getActionListeners
public ActionListener[] getActionListeners()(Code)
	Returns an array of all the `ActionListener`s added to this group of buttons with addActionListener(). all of the `ActionListener`s added or an emptyarray if no listeners have been added

getComponentId
final public String getComponentId()(Code)
	Return a jvm wide unique id. an id

getDelayEvents
public boolean getDelayEvents()(Code)

getElements
public Enumeration getElements()(Code)
	Gets all the buttons the group consists of. an enumeration of the buttons of the group

getLowLevelEventId
public String getLowLevelEventId()(Code)
	Gets the id of the component. the component id

getSelection
final public SAbstractButton getSelection()(Code)
	Gets the button of the group that is selected. See Also: SButtonGroup.setSelection(SAbstractButton) the selected button

isSelected
public boolean isSelected(SAbstractButton button)(Code)
	Returns the state of the button. True if the button is selected, false if not. Parameters: button - the button. true if the button is selected, otherwise false.

iterator
public Iterator iterator()(Code)

remove
public void remove(SAbstractButton button)(Code)
	removes a button from the group. Parameters: button - the button that is to be removed

removeActionListener
public void removeActionListener(ActionListener listener)(Code)
	Removes the supplied Listener from the listener list

removeAll
public void removeAll()(Code)
	removes all buttons from the group.

setDelayEvents
public void setDelayEvents(boolean b)(Code)

setSelected
public void setSelected(SAbstractButton b, boolean selected)(Code)
	Sets a button in the selected state. There can be only one button selected at a time. Parameters: b - the button. Parameters: selected - true if this button is to be selected, otherwise false.

setSelection
protected void setSelection(SAbstractButton button)(Code)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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