Java 2 Platform SE v1.3.1: Class DefaultBoundedRangeModel

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Java^TM 2 Platform
Std. Ed. v1.3.1

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javax.swing
Class DefaultBoundedRangeModel

java.lang.Object
  |
  +--javax.swing.DefaultBoundedRangeModel

All Implemented Interfaces:: BoundedRangeModel, Serializable

public class DefaultBoundedRangeModel
extends Object
implements BoundedRangeModel, 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 applications running the same version of Swing. A future release of Swing will provide support for long term persistence.

See Also:: BoundedRangeModel, Serialized Form

Field Summary

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

protected EventListenerList listenerList
          The listeners waiting for model changes.

Constructor Summary

DefaultBoundedRangeModel()
          Initializes all of the properties with default values.

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

Method Summary

void addChangeListener(ChangeListener l)
          Adds a ChangeListener.

protected void fireStateChanged()
          Run each ChangeListeners stateChanged() method.

int getExtent()
          Return the model's extent.

EventListener[] getListeners(Class listenerType)
          Return an array of all the listeners of the given type that were added to this model.

int getMaximum()
          Return the model's maximum.

int getMinimum()
          Return the model's minimum.

int getValue()
          Return the model's current value.

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:

void setMaximum(int n)
          Sets the maximum to n after ensuring that n that the other three properties obey the model's constraints:

void setMinimum(int n)
          Sets the minimum to n after ensuring that n that the other three properties obey the model's constraints:

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:

void setValue(int n)
          Sets the current value of the model.

void setValueIsAdjusting(boolean b)
          Sets the valueIsAdjusting property.

String toString()
          Returns a string that displays all of the BoundedRangeModel properties.

Methods inherited from class java.lang.Object

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

The listeners waiting for model changes.

Constructor Detail

DefaultBoundedRangeModel

public DefaultBoundedRangeModel()

Initializes all of the properties with default values. Those values are:

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()

Return the model's current value.

Specified by:: getValue in interface BoundedRangeModel

Returns:: the model's current value
See Also:: setValue(int), BoundedRangeModel.getValue()

getExtent

public int getExtent()

Return the model's extent.

Specified by:: getExtent in interface BoundedRangeModel

Returns:: the model's extent
See Also:: setExtent(int), BoundedRangeModel.getExtent()

getMinimum

public int getMinimum()

Return the model's minimum.

Specified by:: getMinimum in interface BoundedRangeModel

Returns:: the model's minimum
See Also:: setMinimum(int), BoundedRangeModel.getMinimum()

getMaximum

public int getMaximum()

Return the model's maximum.

Specified by:: getMaximum in interface BoundedRangeModel

Returns:: the model's maximum
See Also:: setMaximum(int), BoundedRangeModel.getMaximum()

setValue

public void setValue(int n)

Sets the current value of the model. For a slider, that determines where the knob appears. Ensures that the new value, n falls within the model's constraints:

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

Specified by:: setValue in interface BoundedRangeModel

See Also:: BoundedRangeModel.setValue(int)

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:: BoundedRangeModel.setExtent(int)

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(), BoundedRangeModel.setMinimum(int)

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:: BoundedRangeModel.setMaximum(int)

setValueIsAdjusting

public void setValueIsAdjusting(boolean b)

Sets the valueIsAdjusting property.

Specified by:: setValueIsAdjusting in interface BoundedRangeModel

See Also:: getValueIsAdjusting(), setValue(int), BoundedRangeModel.setValueIsAdjusting(boolean)

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:: setValue(int), BoundedRangeModel.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:: BoundedRangeModel.setRangeProperties(int, int, int, int, boolean), setValue(int), setExtent(int), setMinimum(int), setMaximum(int), setValueIsAdjusting(boolean)

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(javax.swing.event.ChangeListener), BoundedRangeModel.addChangeListener(javax.swing.event.ChangeListener)

removeChangeListener

public void removeChangeListener(ChangeListener l)

Removes a ChangeListener.

Specified by:: removeChangeListener in interface BoundedRangeModel

Parameters:: l - the ChangeListener to remove
See Also:: addChangeListener(javax.swing.event.ChangeListener), BoundedRangeModel.removeChangeListener(javax.swing.event.ChangeListener)

fireStateChanged

protected void fireStateChanged()

Run each ChangeListeners stateChanged() method.

See Also:: setRangeProperties(int, int, int, int, boolean), EventListenerList

toString

public String toString()

Returns a string that displays all of the BoundedRangeModel properties.

Overrides:: toString in class Object

Following copied from class: java.lang.Object

Returns:: a string representation of the object.

getListeners

public EventListener[] getListeners(Class listenerType)

Return an array of all the listeners of the given type that were added to this model.

Since:: 1.3

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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javax.swing Class DefaultBoundedRangeModel

changeEvent

listenerList

DefaultBoundedRangeModel

DefaultBoundedRangeModel

getValue

getExtent

getMinimum

getMaximum

setValue

setExtent

setMinimum

setMaximum

setValueIsAdjusting

getValueIsAdjusting

setRangeProperties

addChangeListener

removeChangeListener

fireStateChanged

toString

getListeners

javax.swing
Class DefaultBoundedRangeModel