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SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
public abstract class AbstractButton extends JComponent implements ItemSelectable, SwingConstants
Defines common behaviors for buttons and menu items.
Buttons can be configured, and to some degree controlled, by
Action
s. Using an
Action
with a button has many benefits beyond directly
configuring a button. Refer to
Swing Components Supporting Action
for more
details, and you can find more information in How
to Use Actions, a section in The Java Tutorial.
For further information see How to Use Buttons, Check Boxes, and Radio Buttons, a section in The Java Tutorial.
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 JavaBeansTM
has been added to the java.beans
package.
Please see {@link java.beans.XMLEncoder}.
Nested Class Summary | |
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protected abstract class |
This class implements accessibility support for the AbstractButton class. |
protected class |
Extends ChangeListener to be serializable. |
Nested classes/interfaces inherited from class javax.swing.JComponent |
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JComponent.AccessibleJComponent |
Nested classes/interfaces inherited from class java.awt.Container |
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Container.AccessibleAWTContainer |
Nested classes/interfaces inherited from class java.awt.Component |
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Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy |
Field Summary | |
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protected ActionListener |
actionListener
The button model's ActionListener . |
static String |
BORDER_PAINTED_CHANGED_PROPERTY
Identifies a change to having the border drawn, or having it not drawn. |
protected transient ChangeEvent |
changeEvent
Only one ChangeEvent is needed per button
instance since the
event's only state is the source property. |
protected ChangeListener |
changeListener
The button model's changeListener . |
static String |
CONTENT_AREA_FILLED_CHANGED_PROPERTY
Identifies a change to having the button paint the content area. |
static String |
DISABLED_ICON_CHANGED_PROPERTY
Identifies a change to the icon used when the button has been disabled. |
static String |
DISABLED_SELECTED_ICON_CHANGED_PROPERTY
Identifies a change to the icon used when the button has been disabled and selected. |
static String |
FOCUS_PAINTED_CHANGED_PROPERTY
Identifies a change to having the border highlighted when focused, or not. |
static String |
HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY
Identifies a change in the button's horizontal alignment. |
static String |
HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY
Identifies a change in the button's horizontal text position. |
static String |
ICON_CHANGED_PROPERTY
Identifies a change to the icon that represents the button. |
protected ItemListener |
itemListener
The button model's ItemListener . |
static String |
MARGIN_CHANGED_PROPERTY
Identifies a change in the button's margins. |
static String |
MNEMONIC_CHANGED_PROPERTY
Identifies a change to the button's mnemonic. |
protected ButtonModel |
model
The data model that determines the button's state. |
static String |
MODEL_CHANGED_PROPERTY
Identifies a change in the button model. |
static String |
PRESSED_ICON_CHANGED_PROPERTY
Identifies a change to the icon used when the button has been pressed. |
static String |
ROLLOVER_ENABLED_CHANGED_PROPERTY
Identifies a change from rollover enabled to disabled or back to enabled. |
static String |
ROLLOVER_ICON_CHANGED_PROPERTY
Identifies a change to the icon used when the cursor is over the button. |
static String |
ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY
Identifies a change to the icon used when the cursor is over the button and it has been selected. |
static String |
SELECTED_ICON_CHANGED_PROPERTY
Identifies a change to the icon used when the button has been selected. |
static String |
TEXT_CHANGED_PROPERTY
Identifies a change in the button's text. |
static String |
VERTICAL_ALIGNMENT_CHANGED_PROPERTY
Identifies a change in the button's vertical alignment. |
static String |
VERTICAL_TEXT_POSITION_CHANGED_PROPERTY
Identifies a change in the button's vertical text position. |
Fields inherited from class javax.swing.JComponent |
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accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW |
Fields inherited from class java.awt.Component |
---|
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Constructor Summary | |
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Method Summary | |
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protected void |
actionPropertyChanged(Action action, String propertyName) Updates the button's state in response to property changes in the associated action. |
void |
Adds an ActionListener to the button.
|
void |
Adds a ChangeListener to the button.
|
protected void |
Adds the specified component to this container at the specified index, refer to java.awt.Container.addImpl for a complete description of this method. |
void |
Adds an ItemListener to the checkbox .
|
void |
check() |
protected int |
checkHorizontalKey(int key, String exception) Verify that the argument is a legal value for the and properties. |
protected int |
checkVerticalKey(int key, String exception) Verify that the argument is a legal value for the vertical properties. |
protected void |
Sets the properties on this button to match those in the specified Action .
|
protected ActionListener |
|
protected PropertyChangeListener |
Creates and returns a PropertyChangeListener that is
responsible for listening for changes from the specified
Action and updating the appropriate properties.
|
protected ChangeListener |
Subclasses that want to handle ChangeEvents differently
can override this to return another ChangeListener
implementation.
|
protected ItemListener |
|
void |
doClick() Programmatically perform a "click". |
void |
doClick(int pressTime) Programmatically perform a "click". |
protected void |
fireActionPerformed(ActionEvent event) Notifies all listeners that have registered interest for notification on this event type. |
protected void |
fireItemStateChanged(ItemEvent event) Notifies all listeners that have registered interest for notification on this event type. |
protected void |
Notifies all listeners that have registered interest for notification on this event type. |
Action |
Returns the currently set Action for this
ActionEvent source, or null
if no Action is set.
|
String |
Returns the action command for this button. |
ActionListener[] |
Returns an array of all the ActionListener s added
to this AbstractButton with addActionListener().
|
ChangeListener[] |
Returns an array of all the ChangeListener s added
to this AbstractButton with addChangeListener().
|
Icon |
Returns the icon used by the button when it's disabled. |
Icon |
Returns the icon used by the button when it's disabled and selected. |
int |
Returns the character, as an index, that the look and feel should provide decoration for as representing the mnemonic character. |
boolean |
Returns the value of the hideActionText property, which
determines whether the button displays text from the
Action .
|
int |
Returns the horizontal alignment of the icon and text. |
int |
Returns the horizontal position of the text relative to the icon. |
Icon |
getIcon() Returns the default icon. |
int |
Returns the amount of space between the text and the icon displayed in this button. |
ItemListener[] |
Returns an array of all the ItemListener s added
to this AbstractButton with addItemListener().
|
String |
getLabel() Returns the label text. |
Insets |
Returns the margin between the button's border and the label. |
int |
Returns the keyboard mnemonic from the the current model. |
ButtonModel |
getModel() Returns the model that this button represents. |
long |
Gets the amount of time (in milliseconds) required between mouse press events for the button to generate the corresponding action events. |
Icon |
Returns the pressed icon for the button. |
Icon |
Returns the rollover icon for the button. |
Icon |
Returns the rollover selection icon for the button. |
Icon |
Returns the selected icon for the button. |
Object[] |
Returns an array (length 1) containing the label or null if the button is not selected.
|
String |
getText() Returns the button's text. |
ButtonUI |
getUI() Returns the L&F object that renders this component. |
int |
Returns the vertical alignment of the text and icon. |
int |
Returns the vertical position of the text relative to the icon. |
boolean |
imageUpdate(Image img, int infoflags, int x, int y, int w, int h) This is overridden to return false if the current Icon 's
Image is not equal to the
passed in Image img .
|
protected void |
|
boolean |
Gets the borderPainted property.
|
boolean |
Gets the contentAreaFilled property.
|
boolean |
Gets the paintFocus property.
|
boolean |
Gets the rolloverEnabled property.
|
boolean |
Returns the state of the button. |
protected void |
Paint the button's border if BorderPainted
property is true and the button has a border.
|
protected String |
Returns a string representation of this AbstractButton .
|
void |
Removes an ActionListener from the button.
|
void |
Removes a ChangeListener from the button. |
void |
Removes an ItemListener from the button.
|
void |
Notifies this component that it no longer has a parent component. |
void |
Sets the Action .
|
void |
setActionCommand(String actionCommand) Sets the action command for this button. |
void |
setBorderPainted(boolean b) Sets the borderPainted property.
|
void |
setContentAreaFilled(boolean b) Sets the contentAreaFilled property.
|
void |
setDisabledIcon(Icon disabledIcon) Sets the disabled icon for the button. |
void |
setDisabledSelectedIcon(Icon disabledSelectedIcon) Sets the disabled selection icon for the button. |
void |
setDisplayedMnemonicIndex(int index) Provides a hint to the look and feel as to which character in the text should be decorated to represent the mnemonic. |
void |
setEnabled(boolean b) Enables (or disables) the button. |
void |
setFocusPainted(boolean b) Sets the paintFocus property, which must
be true for the focus state to be painted.
|
void |
setHideActionText(boolean hideActionText) Sets the hideActionText property, which determines
whether the button displays text from the Action .
|
void |
setHorizontalAlignment(int alignment) Sets the horizontal alignment of the icon and text. |
void |
setHorizontalTextPosition(int textPosition) Sets the horizontal position of the text relative to the icon. |
void |
Sets the button's default icon. |
void |
setIconTextGap(int iconTextGap) If both the icon and text properties are set, this property defines the space between them. |
void |
Sets the label text. |
void |
setLayout(LayoutManager mgr) Sets the layout manager for this container, refer to java.awt.Container.setLayout for a complete description of this method. |
void |
Sets space for margin between the button's border and the label. |
void |
setMnemonic(char mnemonic) This method is now obsolete, please use setMnemonic(int)
to set the mnemonic for a button.
|
void |
setMnemonic(int mnemonic) Sets the keyboard mnemonic on the current model. |
void |
setModel(ButtonModel newModel) Sets the model that this button represents. |
void |
setMultiClickThreshhold(long threshhold) Sets the amount of time (in milliseconds) required between mouse press events for the button to generate the corresponding action events. |
void |
setPressedIcon(Icon pressedIcon) Sets the pressed icon for the button. |
void |
setRolloverEnabled(boolean b) Sets the rolloverEnabled property, which
must be true for rollover effects to occur.
|
void |
setRolloverIcon(Icon rolloverIcon) Sets the rollover icon for the button. |
void |
setRolloverSelectedIcon(Icon rolloverSelectedIcon) Sets the rollover selected icon for the button. |
void |
setSelected(boolean b) Sets the state of the button. |
void |
setSelectedIcon(Icon selectedIcon) Sets the selected icon for the button. |
void |
Sets the button's text. |
void |
Sets the L&F object that renders this component. |
void |
setVerticalAlignment(int alignment) Sets the vertical alignment of the icon and text. |
void |
setVerticalTextPosition(int textPosition) Sets the vertical position of the text relative to the icon. |
void |
updateUI() Resets the UI property to a value from the current look and feel. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected ActionListener actionListener
ActionListener
.
public static final String BORDER_PAINTED_CHANGED_PROPERTY
protected transient ChangeEvent changeEvent
ChangeEvent
is needed per button
instance since the
event's only state is the source property. The source of events
generated is always "this".
protected ChangeListener changeListener
changeListener
.
public static final String CONTENT_AREA_FILLED_CHANGED_PROPERTY
public static final String DISABLED_ICON_CHANGED_PROPERTY
public static final String DISABLED_SELECTED_ICON_CHANGED_PROPERTY
public static final String FOCUS_PAINTED_CHANGED_PROPERTY
public static final String HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY
public static final String HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY
public static final String ICON_CHANGED_PROPERTY
protected ItemListener itemListener
ItemListener
.
public static final String MARGIN_CHANGED_PROPERTY
public static final String MNEMONIC_CHANGED_PROPERTY
protected ButtonModel model
public static final String MODEL_CHANGED_PROPERTY
public static final String PRESSED_ICON_CHANGED_PROPERTY
public static final String ROLLOVER_ENABLED_CHANGED_PROPERTY
public static final String ROLLOVER_ICON_CHANGED_PROPERTY
public static final String ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY
public static final String SELECTED_ICON_CHANGED_PROPERTY
public static final String TEXT_CHANGED_PROPERTY
public static final String VERTICAL_ALIGNMENT_CHANGED_PROPERTY
public static final String VERTICAL_TEXT_POSITION_CHANGED_PROPERTY
Constructor Detail |
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public AbstractButton()
Method Detail |
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protected void actionPropertyChanged(Action action, String propertyName)
Refer to the table at
Swing Components Supporting Action
for a list of
the properties this method sets.
action
- the Action
associated with this buttonpropertyName
- the name of the property that changedpublic void addActionListener(ActionListener l)
ActionListener
to the button.
l
- the ActionListener
to be addedpublic void addChangeListener(ChangeListener l)
ChangeListener
to the button.
l
- the listener to be addedprotected void addImpl(Component comp, Object constraints, int index)
addImpl
in class Container
comp
- the component to be addedconstraints
- an object expressing layout constraints
for this componentindex
- the position in the container's list at which to
insert the component, where -1
means append to the endpublic void addItemListener(ItemListener l)
ItemListener
to the checkbox
.
l
- the ItemListener
to be addedpublic void check()
protected int checkHorizontalKey(int key, String exception)
key
- the property value to checkexception
- the message to use in the
{@code IllegalArgumentException} that is thrown for an invalid
valueprotected int checkVerticalKey(int key, String exception)
key
- the property value to checkexception
- the message to use in the
{@code IllegalArgumentException} that is thrown for an invalid
valueprotected void configurePropertiesFromAction(Action a)
Action
. Refer to
Swing Components Supporting Action
for more
details as to which properties this sets.
a
- the Action
from which to get the properties,
or null
protected ActionListener createActionListener()
protected PropertyChangeListener createActionPropertyChangeListener(Action a)
PropertyChangeListener
that is
responsible for listening for changes from the specified
Action
and updating the appropriate properties.
Warning: If you subclass this do not create an anonymous
inner class. If you do the lifetime of the button will be tied to
that of the Action
.
a
- the button's actionprotected ChangeListener createChangeListener()
ChangeEvents
differently
can override this to return another ChangeListener
implementation.
ChangeListener
protected ItemListener createItemListener()
public void doClick()
public void doClick(int pressTime)
pressTime
milliseconds.
pressTime
- the time to "hold down" the button, in millisecondsprotected void fireActionPerformed(ActionEvent event)
event
parameter.
event
- the ActionEvent
objectprotected void fireItemStateChanged(ItemEvent event)
event
parameter.
event
- the ItemEvent
objectprotected void fireStateChanged()
public Action getAction()
Action
for this
ActionEvent
source, or null
if no Action
is set.
Action
for this ActionEvent
source, or null
public String getActionCommand()
public ActionListener[] getActionListeners()
ActionListener
s added
to this AbstractButton with addActionListener().
ActionListener
s added or an empty
array if no listeners have been addedpublic ChangeListener[] getChangeListeners()
ChangeListener
s added
to this AbstractButton with addChangeListener().
ChangeListener
s added or an empty
array if no listeners have been addedpublic Icon getDisabledIcon()
Some look and feels might not render the disabled Icon, in which case they will ignore this.
disabledIcon
propertypublic Icon getDisabledSelectedIcon()
getDisabledIcon()
otherwise.
Some look and feels might not render the disabled selected Icon, in which case they will ignore this.
disabledSelectedIcon
propertypublic int getDisplayedMnemonicIndex()
public boolean getHideActionText()
hideActionText
property, which
determines whether the button displays text from the
Action
. This is useful only if an Action
has been installed on the button.
true
if the button's text
property should not reflect that of the
Action
; the default is false
public int getHorizontalAlignment()
horizontalAlignment
property,
one of the following values:
public int getHorizontalTextPosition()
horizontalTextPosition
property,
one of the following values:
public Icon getIcon()
Icon
public int getIconTextGap()
public ItemListener[] getItemListeners()
ItemListener
s added
to this AbstractButton with addItemListener().
ItemListener
s added or an empty
array if no listeners have been addedpublic String getLabel()
String
containing the labelpublic Insets getMargin()
Insets
object specifying the margin
between the botton's border and the labelpublic int getMnemonic()
public ButtonModel getModel()
model
propertypublic long getMultiClickThreshhold()
public Icon getPressedIcon()
pressedIcon
propertypublic Icon getRolloverIcon()
rolloverIcon
propertypublic Icon getRolloverSelectedIcon()
rolloverSelectedIcon
propertypublic Icon getSelectedIcon()
selectedIcon
propertypublic Object[] getSelectedObjects()
null
if the button is not selected.
null
public String getText()
public ButtonUI getUI()
public int getVerticalAlignment()
verticalAlignment
property, one of the
following values:
public int getVerticalTextPosition()
verticalTextPosition
property,
one of the following values:
public boolean imageUpdate(Image img, int infoflags, int x, int y, int w, int h)
Icon
's
Image
is not equal to the
passed in Image
img
.
imageUpdate
in class Component
img
- the Image
to be comparedinfoflags
- flags used to repaint the button when the image
is updated and which determine how much is to be paintedx
- the x coordinatey
- the y coordinatew
- the widthh
- the heightprotected void init(String text, Icon icon)
text
icon
public boolean isBorderPainted()
borderPainted
property.
borderPainted
propertypublic boolean isContentAreaFilled()
contentAreaFilled
property.
contentAreaFilled
propertypublic boolean isFocusPainted()
paintFocus
property.
paintFocus
propertypublic boolean isRolloverEnabled()
rolloverEnabled
property.
rolloverEnabled
propertypublic boolean isSelected()
protected void paintBorder(Graphics g)
BorderPainted
property is true and the button has a border.
paintBorder
in class JComponent
g
- the Graphics
context in which to paintprotected String paramString()
AbstractButton
.
This method
is intended to be used only for debugging purposes, and the
content and format of the returned string may vary between
implementations. The returned string may be empty but may not
be null
.
Overriding paramString
to provide information about the
specific new aspects of the JFC components.
paramString
in class JComponent
AbstractButton
public void removeActionListener(ActionListener l)
ActionListener
from the button.
If the listener is the currently set Action
for the button, then the Action
is set to null
.
l
- the listener to be removedpublic void removeChangeListener(ChangeListener l)
l
- the listener to be removedpublic void removeItemListener(ItemListener l)
ItemListener
from the button.
l
- the ItemListener
to be removedpublic void removeNotify()
removeNotify
in class JComponent
public void setAction(Action a)
Action
.
The new Action
replaces any previously set
Action
but does not affect ActionListeners
independently added with addActionListener
.
If the Action
is already a registered
ActionListener
for the button, it is not re-registered.
Setting the Action
results in immediately changing
all the properties described in
Swing Components Supporting Action
.
Subsequently, the button's properties are automatically updated
as the Action
's properties change.
This method uses three other methods to set
and help track the Action
's property values.
It uses the configurePropertiesFromAction
method
to immediately change the button's properties.
To track changes in the Action
's property values,
this method registers the PropertyChangeListener
returned by createActionPropertyChangeListener
. The
default {@code PropertyChangeListener} invokes the
{@code actionPropertyChanged} method when a property in the
{@code Action} changes.
a
- the Action
for the AbstractButton
,
or null
public void setActionCommand(String actionCommand)
actionCommand
- the action command for this buttonpublic void setBorderPainted(boolean b)
borderPainted
property.
If true
and the button has a border,
the border is painted. The default value for the
borderPainted
property is true
.
b
- if true and border property is not null
,
the border is paintedpublic void setContentAreaFilled(boolean b)
contentAreaFilled
property.
If true
the button will paint the content
area. If you wish to have a transparent button, such as
an icon only button, for example, then you should set
this to false
. Do not call setOpaque(false)
.
The default value for the the contentAreaFilled
property is true
.
This function may cause the component's opaque property to change.
The exact behavior of calling this function varies on a component-by-component and L&F-by-L&F basis.
b
- if true, the content should be filled; if false
the content area is not filledpublic void setDisabledIcon(Icon disabledIcon)
disabledIcon
- the icon used as the disabled imagepublic void setDisabledSelectedIcon(Icon disabledSelectedIcon)
disabledSelectedIcon
- the icon used as the disabled
selection imagepublic void setDisplayedMnemonicIndex(int index) throws IllegalArgumentException
The value of this is updated as the properties relating to the
mnemonic change (such as the mnemonic itself, the text...).
You should only ever have to call this if
you do not wish the default character to be underlined. For example, if
the text was 'Save As', with a mnemonic of 'a', and you wanted the 'A'
to be decorated, as 'Save As', you would have to invoke
setDisplayedMnemonicIndex(5)
after invoking
setMnemonic(KeyEvent.VK_A)
.
index
- Index into the String to underlineIllegalArgumentException
- will be thrown if index
is >= length of the text, or < -1public void setEnabled(boolean b)
setEnabled
in class JComponent
b
- true to enable the button, otherwise falsepublic void setFocusPainted(boolean b)
paintFocus
property, which must
be true
for the focus state to be painted.
The default value for the paintFocus
property
is true
.
Some look and feels might not paint focus state;
they will ignore this property.
b
- if true
, the focus state should be paintedpublic void setHideActionText(boolean hideActionText)
hideActionText
property, which determines
whether the button displays text from the Action
.
This is useful only if an Action
has been
installed on the button.
hideActionText
- true
if the button's
text
property should not reflect
that of the Action
; the default is
false
public void setHorizontalAlignment(int alignment)
alignment
- the alignment value, one of the following values:
public void setHorizontalTextPosition(int textPosition)
textPosition
- one of the following values:
public void setIcon(Icon defaultIcon)
defaultIcon
- the icon used as the default imagepublic void setIconTextGap(int iconTextGap)
The default value of this property is 4 pixels.
This is a JavaBeans bound property.
iconTextGap
public void setLabel(String label)
label
- a String
containing the textpublic void setLayout(LayoutManager mgr)
setLayout
in class Container
mgr
- the specified layout managerpublic void setMargin(Insets m)
null
will cause the button to
use the default margin. The button's default Border
object will use this value to create the proper margin.
However, if a non-default border is set on the button,
it is that Border
object's responsibility to create the
appropriate margin space (else this property will
effectively be ignored).
m
- the space between the border and the labelpublic void setMnemonic(char mnemonic)
setMnemonic(int)
to set the mnemonic for a button. This method is only designed
to handle character values which fall between 'a' and 'z' or
'A' and 'Z'.
mnemonic
- a char specifying the mnemonic valuepublic void setMnemonic(int mnemonic)
A mnemonic must correspond to a single key on the keyboard
and should be specified using one of the VK_XXX
keycodes defined in java.awt.event.KeyEvent
.
Mnemonics are case-insensitive, therefore a key event
with the corresponding keycode would cause the button to be
activated whether or not the Shift modifier was pressed.
If the character defined by the mnemonic is found within the button's label string, the first occurrence of it will be underlined to indicate the mnemonic to the user.
mnemonic
- the key code which represents the mnemonicpublic void setModel(ButtonModel newModel)
newModel
- the new ButtonModel
public void setMultiClickThreshhold(long threshhold)
threshhold
- the amount of time required between mouse
press events to generate corresponding action eventspublic void setPressedIcon(Icon pressedIcon)
pressedIcon
- the icon used as the "pressed" imagepublic void setRolloverEnabled(boolean b)
rolloverEnabled
property, which
must be true
for rollover effects to occur.
The default value for the rolloverEnabled
property is false
.
Some look and feels might not implement rollover effects;
they will ignore this property.
b
- if true
, rollover effects should be paintedpublic void setRolloverIcon(Icon rolloverIcon)
rolloverIcon
- the icon used as the "rollover" imagepublic void setRolloverSelectedIcon(Icon rolloverSelectedIcon)
rolloverSelectedIcon
- the icon used as the
"selected rollover" imagepublic void setSelected(boolean b)
actionEvent
.
Call doClick
to perform a programatic action change.
b
- true if the button is selected, otherwise falsepublic void setSelectedIcon(Icon selectedIcon)
selectedIcon
- the icon used as the "selected" imagepublic void setText(String text)
text
- the string used to set the textpublic void setUI(ButtonUI ui)
ui
- the ButtonUI
L&F objectpublic void setVerticalAlignment(int alignment)
alignment
- one of the following values:
public void setVerticalTextPosition(int textPosition)
textPosition
- one of the following values:
public void updateUI()
AbstractButton
should override this to update the UI. For
example, JButton
might do the following:
setUI((ButtonUI)UIManager.getUI( "ButtonUI", "javax.swing.plaf.basic.BasicButtonUI", this));
updateUI
in class JComponent
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