dd.ui
Class JBoolean

java.lang.Object
  javax.swing.DefaultButtonModel
      javax.swing.JToggleButton.ToggleButtonModel
          dd.ui.JBoolean

All Implemented Interfaces:

javax.swing.ButtonModel, java.awt.ItemSelectable, java.io.Serializable

public class JBoolean

extends javax.swing.JToggleButton.ToggleButtonModel

A bound boolean variable. You can use this class to easily deal with boolean variables within Swing interfaces. This "model" can be associated with as many swing components as necessary, but usually it is displayed in only one check box or radio button. GUI events will update this boolean value, and updating the boolean will update any radio buttons or check boxes that use this as a model.

You must set the "model" of the button before any use of the button.

Example usage (checkbox)

 JBoolean bold = new JBoolean();
 JCheckBox useBold = new JCheckBox("Bold Text");
 useBold.setModel(bold);
 bold.setState(true); // Also sets the checkbox
 bold.getState(); // returns the current state of the checkbox
 

Example usage (radio buttons)

 JBoolean size10, size12, size14;
 size10 = new JBoolean();
 size12 = new JBoolean();
 size14 = new JBoolean();
 JRadioButton use10, use12, use14;
 JButtonGroup bg = new ButtonGroup();
 use10 = new JRadioButton("10 point");
 use10.setModel(size10);
 bg.add(use10);
 use12 = new JRadioButton("12 point");
 use12.setModel(size12);
 bg.add(use12);
 use14 = new JRadioButton("14 point");
 use14.setModel(size14);
 bg.add(use10);

 size12.setState(true);
 size12.getState(); // will return "true"
 size10.getState(); // will return "false"
 size10.setState(true);
 size12.getState(); // will return "false"
 size10.getState(); // will return "true"
 

Author:

Eric Scharff

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.swing.DefaultButtonModel

actionCommand, ARMED, changeEvent, ENABLED, group, listenerList, mnemonic, PRESSED, ROLLOVER, SELECTED, stateMask

Constructor Summary

JBoolean()

Method Summary

boolean	getState() Returns the state of the boolean value.
void	setSelected(boolean state) Updates the state of the boolean value.
void	setState(boolean state) Updates the state of the boolean value.

Methods inherited from class javax.swing.JToggleButton.ToggleButtonModel

isSelected, setPressed

Methods inherited from class javax.swing.DefaultButtonModel

addActionListener, addChangeListener, addItemListener, fireActionPerformed, fireItemStateChanged, fireStateChanged, getActionCommand, getActionListeners, getChangeListeners, getGroup, getItemListeners, getListeners, getMnemonic, getSelectedObjects, isArmed, isEnabled, isPressed, isRollover, removeActionListener, removeChangeListener, removeItemListener, setActionCommand, setArmed, setEnabled, setGroup, setMnemonic, setRollover

Methods inherited from class java.lang.Object

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

Constructor Detail

JBoolean

public JBoolean()

Method Detail

getState

public boolean getState()

Returns the state of the boolean value. This state will always be in sync with the GUI representation (or multiple representations) of the boolean.

Returns:

true if the boolean is "checked" or "selected".

setState

public void setState(boolean state)

Updates the state of the boolean value. This state will be propagated to any GUI components that listen for the button. Setting this to true indicates that the boolean is "checked" or "selected".

Parameters:

state - true if the boolean is "selected"

setSelected

public void setSelected(boolean state)

Updates the state of the boolean value. This state will be propagated to any GUI components that listen for the button. Setting this to true indicates that the boolean is "checked" or "selected". This overrides the default behavior for Swing button models to properly store the new selected value.

Parameters:

state - true if the boolean is "selected"