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javax.swing
Class DefaultBoundedRangeModel
java.lang.Object
javax.swing.DefaultBoundedRangeModel
-
All Implemented Interfaces:
-
Serializable
,
BoundedRangeModel
-
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. As of 1.4, support for long term storage of all JavaBeans
TM
has been added to the java.beans package. Please see
XMLEncoder
.
-
See Also:
-
BoundedRangeModel
Method Summary
|
void |
addChangeListener
(
ChangeListener
l)
Adds a ChangeListener. |
protected void |
fireStateChanged
()
Runs each ChangeListener's stateChanged method. |
ChangeListener
[] |
getChangeListeners
()
Returns an array of all the change listeners registered on this DefaultBoundedRangeModel. |
int |
getExtent
()
Returns the model's extent. |
|
getListeners
(
Class
<T> listenerType)
Returns an array of all the objects currently registered as FooListeners upon this model. |
int |
getMaximum
()
Returns the model's maximum. |
int |
getMinimum
()
Returns the model's minimum. |
int |
getValue
()
Returns 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. |
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.
DefaultBoundedRangeModel
public DefaultBoundedRangeModel()
-
Initializes all of the properties with default values. Those values are:
-
value = 0
-
extent = 0
-
minimum = 0
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maximum = 100
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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
min
<= value
<= value+extent
<= max
getValue
public int getValue()
-
Returns 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()
-
Returns 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()
-
Returns 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()
-
Returns 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
minimum
<= value
<= value+extent
<= maximum
-
-
Specified by:
-
setValue
in interface
BoundedRangeModel
-
-
Parameters:
-
n - the model's new value
-
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
minimum
<= value
<= value+extent
<= maximum
-
-
Specified by:
-
setExtent
in interface
BoundedRangeModel
-
-
Parameters:
-
n - the model's new extent
-
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
minimum
<= value
<= value+extent
<= maximum
-
-
Specified by:
-
setMinimum
in interface
BoundedRangeModel
-
-
Parameters:
-
n - the model's new minimum
-
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
minimum
<= value
<= value+extent
<= maximum
-
-
Specified by:
-
setMaximum
in interface
BoundedRangeModel
-
-
Parameters:
-
n - the model's new maximum
-
See Also:
-
BoundedRangeModel.setMaximum(int)
setValueIsAdjusting
public void setValueIsAdjusting(boolean b)
-
Sets the valueIsAdjusting property.
-
-
Specified by:
-
setValueIsAdjusting
in interface
BoundedRangeModel
-
-
Parameters:
-
b - true if the upcoming changes to the value property are part of a series
-
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
minimum
<= value
<= value+extent
<= maximum
At most, one ChangeEvent is generated.
-
-
Specified by:
-
setRangeProperties
in interface
BoundedRangeModel
-
-
Parameters:
-
newValue - an int giving the current value
-
newExtent - an int giving the amount by which the value can "jump"
-
newMin - an int giving the minimum value
-
newMax - an int giving the maximum value
-
adjusting - a boolean, true if a series of changes are in progress
-
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)
getChangeListeners
public ChangeListener[] getChangeListeners()
-
Returns an array of all the change listeners registered on this DefaultBoundedRangeModel.
-
-
-
Returns:
-
all of this model's ChangeListeners or an empty array if no change listeners are currently registered
-
Since:
-
1.4
-
See Also:
-
addChangeListener(javax.swing.event.ChangeListener)
,
removeChangeListener(javax.swing.event.ChangeListener)
fireStateChanged
protected void fireStateChanged()
-
Runs each ChangeListener's 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
-
-
Returns:
-
a string representation of the object.
getListeners
public <T extends EventListener> T[] getListeners(Class<T> listenerType)
-
Returns an array of all the objects currently registered as FooListeners upon this model. FooListeners are registered using the addFooListener method.
You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a DefaultBoundedRangeModel instance m for its change listeners with the following code:
ChangeListener[] cls = (ChangeListener[])(m.getListeners(ChangeListener.class));
If no such listeners exist, this method returns an empty array.
-
-
-
Parameters:
-
listenerType - the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener
-
Returns:
-
an array of all objects registered as FooListeners on this model, or an empty array if no such listeners have been added
-
Throws:
-
ClassCastException
- if listenerType doesn't specify a class or interface that implements java.util.EventListener
-
Since:
-
1.3
-
See Also:
-
getChangeListeners()