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Class com.sun.java.swing.DefaultBoundedRangeModel

java.lang.Object
  |
  +--com.sun.java.swing.DefaultBoundedRangeModel

public class DefaultBoundedRangeModel

extends java.lang.Object

implements BoundedRangeModel, java.io.Serializable

A generic implementation of BoundedRangeModel.

Warning: serialized objects of this class will not be compatible with future swing releases. The current serialization support is appropriate for short term storage or RMI between Swing1.0 applications. It will not be possible to load serialized Swing1.0 objects with future releases of Swing. The JDK1.2 release of Swing will be the compatibility baseline for the serialized form of Swing objects.

See Also:

BoundedRangeModel, Serialized Form

Field Summary

ChangeEvent	changeEvent Only one ChangeEvent is needed per model instance since the event's only (read-only) state is the source property.
EventListenerList	listenerList

Constructor Summary

DefaultBoundedRangeModel()
Initializes all of the properties as follows:

• value = 0
• extent = 0
• minimum = 0
• maximum = 100
• adjusting = false

DefaultBoundedRangeModel(int value, int extent, int min, int max)
Initializes value, extent, minimum and maximum.

Method Summary

void	addChangeListener(ChangeListener l) Adds a ChangeListener.
void	fireStateChanged() Run each ChangeListeners stateChanged() method.
int	getExtent()
int	getMaximum()
int	getMinimum()
int	getValue()
boolean	getValueIsAdjusting() Returns true if the value is in the process of changing as a result of actions being taken by the user.
void	removeChangeListener(ChangeListener l) Removes a ChangeListener.
void	setExtent(int n) Sets the extent to n after ensuring that n is greater than or equal to zero and falls within the model's constraints: minimum <= value <= value+extent <= maximum
void	setMaximum(int n) Sets the maximum to n after ensuring that n that the other three properties obey the model's constraints: minimum <= value <= value+extent <= maximum
void	setMinimum(int n) Sets the minimum to n after ensuring that n that the other three properties obey the model's constraints: minimum <= value <= value+extent <= maximum
void	setRangeProperties(int newValue, int newExtent, int newMin, int newMax, boolean adjusting) Sets all of the BoundedRangeModel properties after forcing the arguments to obey the usual constraints: minimum <= value <= value+extent <= maximum At most, one ChangeEvent is generated.
void	setValue(int n) Sets the value to n after ensuring that n falls within the model's constraints: minimum <= value <= value+extent <= maximum
void	setValueIsAdjusting(boolean b) Sets the valueIsAdjusting property.
java.lang.String	toString() Returns a string that displays all of the BoundedRangeModel properties.

Methods inherited from class java.lang.Object

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

Field Detail

changeEvent

protected transient ChangeEvent changeEvent

Only one ChangeEvent is needed per model instance since the event's only (read-only) state is the source property. The source of events generated here is always "this".

listenerList

protected EventListenerList listenerList

Constructor Detail

DefaultBoundedRangeModel

public DefaultBoundedRangeModel()

Initializes all of the properties as follows:

• value = 0
• extent = 0
• minimum = 0
• maximum = 100
• adjusting = false

DefaultBoundedRangeModel

public DefaultBoundedRangeModel(int value,
                                int extent,
                                int min,
                                int max)

Initializes value, extent, minimum and maximum. Adjusting is false. Throws an IllegalArgumentException if the following constraints aren't satisfied:

 min <= value <= value+extent <= max
 

Method Detail

getValue

public int getValue()

Description copied from interface:
Returns the model's current value. Note that the upper limit on the model's value is maximum - extent and the lower limit is minimum.

Specified by:

getValue in interface BoundedRangeModel

Returns:

the model's current value

See Also:

setValue, getValue

getExtent

public int getExtent()

Description copied from interface:
Returns the model's extent, the length of the inner range that begins at the model's value.

Specified by:

getExtent in interface BoundedRangeModel

Returns:

the model's extent

See Also:

setExtent, getExtent

getMinimum

public int getMinimum()

Description copied from interface:
Returns the minimum acceptable value.

Specified by:

getMinimum in interface BoundedRangeModel

Returns:

the model's minimum

See Also:

setMinimum, getMinimum

getMaximum

public int getMaximum()

Description copied from interface:
Returns the model's maximum. Note that the upper limit on the model's value is (maximum - extent).

Specified by:

getMaximum in interface BoundedRangeModel

Returns:

the model's maximum

See Also:

setMaximum, getMaximum

setValue

public void setValue(int n)

Sets the value to n after ensuring that n falls within the model's constraints:

 minimum <= value <= value+extent <= maximum
 

Specified by:

setValue in interface BoundedRangeModel

See Also:

setValue

setExtent

public void setExtent(int n)

Sets the extent to n after ensuring that n is greater than or equal to zero and falls within the model's constraints:

 minimum <= value <= value+extent <= maximum
 

Specified by:

setExtent in interface BoundedRangeModel

See Also:

getExtent, setExtent

setMinimum

public void setMinimum(int n)

Sets the minimum to n after ensuring that n that the other three properties obey the model's constraints:

 minimum <= value <= value+extent <= maximum
 

Specified by:

setMinimum in interface BoundedRangeModel

See Also:

getMinimum, setMinimum

setMaximum

public void setMaximum(int n)

Sets the maximum to n after ensuring that n that the other three properties obey the model's constraints:

 minimum <= value <= value+extent <= maximum
 

Specified by:

setMaximum in interface BoundedRangeModel

See Also:

getMaximum, setMaximum

setValueIsAdjusting

public void setValueIsAdjusting(boolean b)

Sets the valueIsAdjusting property.

Specified by:

setValueIsAdjusting in interface BoundedRangeModel

See Also:

getValueIsAdjusting, setValue, setValueIsAdjusting

getValueIsAdjusting

public boolean getValueIsAdjusting()

Returns true if the value is in the process of changing as a result of actions being taken by the user.

Specified by:

getValueIsAdjusting in interface BoundedRangeModel

Returns:

the value of the valueIsAdjusting property

See Also:

setValueIsAdjusting, setValue, getValueIsAdjusting

setRangeProperties

public void setRangeProperties(int newValue,
                               int newExtent,
                               int newMin,
                               int newMax,
                               boolean adjusting)

Sets all of the BoundedRangeModel properties after forcing the arguments to obey the usual constraints:

 minimum <= value <= value+extent <= maximum
 

At most, one ChangeEvent is generated.

Specified by:

setRangeProperties in interface BoundedRangeModel

See Also:

setRangeProperties, setValue, setExtent, setMinimum, setMaximum, setValueIsAdjusting

addChangeListener

public void addChangeListener(ChangeListener l)

Adds a ChangeListener. The change listeners are run each time any one of the Bounded Range model properties changes.

Specified by:

addChangeListener in interface BoundedRangeModel

Parameters:

l - the ChangeListener to add

See Also:

removeChangeListener, addChangeListener

removeChangeListener

public void removeChangeListener(ChangeListener l)

Removes a ChangeListener.

Specified by:

removeChangeListener in interface BoundedRangeModel

Parameters:

l - the ChangeListener to remove

See Also:

addChangeListener, removeChangeListener

fireStateChanged

protected void fireStateChanged()

Run each ChangeListeners stateChanged() method.

See Also:

setRangeProperties, EventListenerList

toString

public java.lang.String toString()

Returns a string that displays all of the BoundedRangeModel properties.

Overrides:

toString in class java.lang.Object