javax.swing

Class JSlider

java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.JSlider

Implemented Interfaces:: Accessible, ImageObserver, MenuContainer, Serializable, SwingConstants

public class JSlider

extends JComponent

implements SwingConstants, Accessible, ImageObserver, MenuContainer, Serializable

A visual component that allows selection of a value within a range by adjusting a thumb in a track. The values for the minimum, maximum, extent and value are stored in a DefaultBoundedRangeModel.

A JSlider component has the following properties:

Property	Stored in	Bound?
extent	model	no
inverted	slider	yes
labelTable	slider	yes
majorTickSpacing	slider	yes
maximum	model	yes
minimum	model	yes
minorTickSpacing	slider	yes
model	slider	yes
orientation	slider	yes
paintLabels	slider	yes
paintTicks	slider	yes
snapToTicks	slider	yes
value	model	no
valueIsAdjusting	model	no

The various behavioural aspects of these properties follows:

When a non-bound property stored in the slider changes, the slider fires a ChangeEvent to its change listeners.
When a bound property stored in the slider changes, the slider fires a PropertyChangeEvent to its property change listeners.
If any of the model's properties change, it fires a ChangeEvent to its listeners, which include the slider.
If the slider receives a ChangeEvent from its model, it will propagate the event to its own change listeners, with the event's "source" property set to refer to the slider, rather than the model.

See Also:: Serialized Form

Nested Class Summary
`protected class`	`JSlider.AccessibleJSlider` Provides the accessibility features for the `JSlider` component.

Nested classes/interfaces inherited from class javax.swing.JComponent
`JComponent.AccessibleJComponent`

Nested classes/interfaces inherited from class java.awt.Container
`Container.AccessibleAWTContainer`

Nested classes/interfaces inherited from class java.awt.Component
`Component.AccessibleAWTComponent`, `Component.BltBufferStrategy`, `Component.FlipBufferStrategy`

Field Summary
`protected ChangeEvent`	`changeEvent` The change event that is passed to all listeners of this slider.
`protected ChangeListener`	`changeListener` The listener that monitors the slider's model and forwards events to the slider's listeners (see `createChangeListener()`).
`protected int`	`majorTickSpacing` The space/distance between major ticks.
`protected int`	`minorTickSpacing` The space/distance between minor ticks.
`protected int`	`orientation` The orientation (horizontal or vertical) of the slider.
`protected BoundedRangeModel`	`sliderModel` The model used to store the slider's range and current value.
`protected boolean`	`snapToTicks` Whether the slider snaps its values to ticks.

Fields inherited from class javax.swing.JComponent
`TOOL_TIP_TEXT_KEY`, `UNDEFINED_CONDITION`, `WHEN_ANCESTOR_OF_FOCUSED_COMPONENT`, `WHEN_FOCUSED`, `WHEN_IN_FOCUSED_WINDOW`, `accessibleContext`, `listenerList`, `ui`

Fields inherited from class java.awt.Component
`BOTTOM_ALIGNMENT`, `CENTER_ALIGNMENT`, `LEFT_ALIGNMENT`, `RIGHT_ALIGNMENT`, `TOP_ALIGNMENT`

Fields inherited from interface java.awt.image.ImageObserver
`ABORT`, `ALLBITS`, `ERROR`, `FRAMEBITS`, `HEIGHT`, `PROPERTIES`, `SOMEBITS`, `WIDTH`

Fields inherited from interface javax.swing.SwingConstants
`BOTTOM`, `CENTER`, `EAST`, `HORIZONTAL`, `LEADING`, `LEFT`, `NEXT`, `NORTH`, `NORTH_EAST`, `NORTH_WEST`, `PREVIOUS`, `RIGHT`, `SOUTH`, `SOUTH_EAST`, `SOUTH_WEST`, `TOP`, `TRAILING`, `VERTICAL`, `WEST`

Constructor Summary
`JSlider()` Creates a new horizontal `JSlider` instance with a minimum of 0, a maximum of 100, and a value of 50.
`JSlider(int orientation)` Creates a new `JSlider` instance with the given orientation and a minimum of 0, a maximum of 100, and a value of 50.
`JSlider(int minimum, int maximum)` Creates a new horizontal `JSlider` instance with the given maximum and minimum and a value that is halfway between the minimum and the maximum.
`JSlider(int minimum, int maximum, int value)` Creates a new horizontal `JSlider` instance with the given minimum, maximum, and value.
`JSlider(int orientation, int minimum, int maximum, int value)` Creates a new `JSlider` instance with the given orientation, minimum, maximum, and value.
`JSlider(BoundedRangeModel model)` Creates a new horizontal `JSlider` instance with the given model.

Method Summary
`void`	`addChangeListener(ChangeListener listener)` Registers a listener with the slider so that it will receive `ChangeEvent` notifications.
`protected ChangeListener`	`createChangeListener()` Creates a `ChangeListener` that is added to the slider's model and forwards change events generated by the model to the listeners that are registered with the `JSlider` (by calling the `fireStateChanged()` method).
`Hashtable<K,V>`	`createStandardLabels(int increment)` Creates a hashtable of `(Integer, JLabel)` pairs that can be used as a label table for this slider.
`Hashtable<K,V>`	`createStandardLabels(int increment, int start)` Creates a hashtable of `(Integer, JLabel)` pairs that can be used as a label table for this slider.
`protected void`	`fireStateChanged()` Sends a `ChangeEvent` to all registered listeners, with this slider as the source.
`AccessibleContext`	`getAccessibleContext()` Returns the object that provides accessibility features for this `JSlider` component.
`ChangeListener[]`	`getChangeListeners()` Returns an array containing all the `ChangeListener` instances registered with this slider.
`int`	`getExtent()` Returns the slider's extent value, obtained from the slider's model.
`boolean`	`getInverted()` Returns the flag that controls whether or not the value scale for the slider is inverted (the default value is `false`).
`Dictionary<K,V>`	`getLabelTable()` Returns the label table for the slider.
`int`	`getMajorTickSpacing()` Returns the distance between major tick marks along the slider's value scale.
`int`	`getMaximum()` Returns the slider's maximum value (obtained from the slider's model).
`int`	`getMinimum()` Returns the minimum value of the slider (from the slider's model).
`int`	`getMinorTickSpacing()` Returns the distance between minor tick marks along the slider's value scale.
`BoundedRangeModel`	`getModel()` Returns the slider's model, which stores the minimum, maximum and current values.
`int`	`getOrientation()` Returns the orientation of the slider, either `SwingConstants.HORIZONTAL` or `SwingConstants.VERTICAL`.
`boolean`	`getPaintLabels()` Returns the flag that controls whether or not labels are painted for the tick marks along the slider.
`boolean`	`getPaintTicks()` Returns the flag that controls whether or not tick marks are painted along the slider's value scale.
`boolean`	`getPaintTrack()` Returns the flag that controls whether or not the track is painted.
`boolean`	`getSnapToTicks()` Returns the flag that controls whether the slider thumb will snap to ticks.
`SliderUI`	`getUI()` Returns the slider's UI delegate.
`String`	`getUIClassID()` Returns the suffix (`"SliderUI"` in this case) used to determine the class name for a UI delegate that can provide the look and feel for a `JSlider`.
`int`	`getValue()` Returns the slider's value (from the slider's model).
`boolean`	`getValueIsAdjusting()` Returns the `valueIsAdjusting` flag from the slider's model.
`protected String`	`paramString()` Returns an implementation-dependent string describing the attributes of this `JSlider`.
`void`	`removeChangeListener(ChangeListener listener)` Removes a listener from this slider so that it will no longer receive `ChangeEvent` notifications from the slider.
`void`	`setExtent(int extent)` Sets the slider's extent value and sends a `ChangeEvent` to all registered listeners.
`void`	`setInverted(boolean inverted)` Sets the flag that controls whether or not the value scale for the slider is inverted and, if the new flag value is different to the old flag value, sends a `PropertyChangeEvent` to all registered listeners.
`void`	`setLabelTable(Dictionary<K,V> table)` Sets the table of labels for the slider and sends a `PropertyChangeEvent` (with the property name "labelTable") to all registered listeners.
`void`	`setMajorTickSpacing(int spacing)` Sets the distance between major tick marks along the slider's value scale, and sends a `PropertyChangeEvent` (with the property name "majorTickSpacing") to all registered listeners.
`void`	`setMaximum(int maximum)` Sets the maximum value of the slider and fires a `PropertyChangeEvent` (with the property name "maximum") to all registered listeners.
`void`	`setMinimum(int minimum)` Sets the minimum value of the slider and fires a `PropertyChangeEvent` (with the property name "minimum") to all registered listeners.
`void`	`setMinorTickSpacing(int spacing)` Sets the distance between minor tick marks along the slider's value scale, and sends a `PropertyChangeEvent` (with the property name "minorTickSpacing") to all registered listeners.
`void`	`setModel(BoundedRangeModel model)` Sets the slider's model and sends a `PropertyChangeEvent` (with the property name "model") to all registered listeners.
`void`	`setOrientation(int orientation)` Sets the orientation for the slider and sends a `PropertyChangeEvent` (with the property name "orientation") to all registered listeners.
`void`	`setPaintLabels(boolean paint)` Sets the flag that controls whether or not labels are painted for the tick marks along the slider and sends a `PropertyChangeEvent` (with the property name "paintLabels") to all registered listeners.
`void`	`setPaintTicks(boolean paint)` Sets the flag that controls whether or not tick marks are painted along the slider's value scale, and sends a `PropertyChangeEvent` (with the property name "paintTicks") to all registered listeners.
`void`	`setPaintTrack(boolean paint)` Sets the flag that controls whether or not the track is painted, and sends a `PropertyChangeEvent` (for the "paintTrack" property) to all registered listeners.
`void`	`setSnapToTicks(boolean snap)` Sets the flag that controls whether the slider thumb will snap to ticks and sends a `PropertyChangeEvent` (with the property name 'snapToTicks') to all registered listeners.
`void`	`setUI(SliderUI ui)` Sets the slider's UI delegate.
`void`	`setValue(int value)` Sets the slider's value and sends a `ChangeEvent` to all registered listeners.
`void`	`setValueIsAdjusting(boolean adjusting)` Sets the `valueIsAdjusting` flag in the slider's model, and sends a `ChangeEvent` to all registered listeners.
`protected void`	`updateLabelUIs()` Resets the UI delegates for the labels in the `labelTable` to the default for the current look and feel.
`void`	`updateUI()` Sets this slider's UI delegate to the default (obtained from the `UIManager`) for the current look and feel.

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, extends EventListener> T[] getListeners, firePropertyChange, firePropertyChange, fireVetoableChange, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setNextFocusableComponent, setOpaque, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update, updateUI

add, add, add, add, add, addContainerListener, addImpl, addNotify, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, extends EventListener> T[] getListeners, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponentZOrder, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setComponentZOrder, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusDownCycle, update, validate, validateTree

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, extends EventListener> T[] getListeners, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFocusable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paint, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFocusable, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, update, validate

Methods inherited from class java.lang.Object
`clone`, `equals`, `extends Object> getClass`, `finalize`, `hashCode`, `notify`, `notifyAll`, `toString`, `wait`, `wait`, `wait`

changeEvent

protected ChangeEvent changeEvent

The change event that is passed to all listeners of this slider.

changeListener

protected ChangeListener changeListener

The listener that monitors the slider's model and forwards events to the slider's listeners (see createChangeListener()).

majorTickSpacing

protected int majorTickSpacing

The space/distance between major ticks.

minorTickSpacing

protected int minorTickSpacing

The space/distance between minor ticks.

orientation

protected int orientation

The orientation (horizontal or vertical) of the slider.

sliderModel

protected BoundedRangeModel sliderModel

The model used to store the slider's range and current value.

snapToTicks

protected boolean snapToTicks

Whether the slider snaps its values to ticks.

JSlider

public JSlider()

Creates a new horizontal JSlider instance with a minimum of 0, a maximum of 100, and a value of 50.

JSlider

public JSlider(int orientation)

Creates a new JSlider instance with the given orientation and a minimum of 0, a maximum of 100, and a value of 50.
Parameters:
orientation - The orientation of the slider (SwingConstants.HORIZONTAL or SwingConstants.VERTICAL).
Throws:
IllegalArgumentException - if orientation is not one of the specified values.

JSlider

public JSlider(int minimum,
               int maximum)

Creates a new horizontal JSlider instance with the given maximum and minimum and a value that is halfway between the minimum and the maximum.
Parameters:
minimum - The minimum value.
maximum - The maximum value.
Throws:
IllegalArgumentException - if minimum is greater than maximum.

JSlider

public JSlider(int minimum,
               int maximum,
               int value)

Creates a new horizontal JSlider instance with the given minimum, maximum, and value.
Parameters:
minimum - The minimum value.
maximum - The maximum value.
value - The initial value.
Throws:
IllegalArgumentException - if value is not in the specified range.
IllegalArgumentException - if minimum is greater than maximum.

JSlider

public JSlider(int orientation,
               int minimum,
               int maximum,
               int value)

Creates a new JSlider instance with the given orientation, minimum, maximum, and value.
Parameters:
orientation - The orientation of the slider (SwingConstants.HORIZONTAL or SwingConstants.VERTICAL).
minimum - The minimum value of the JSlider.
maximum - The maximum value of the JSlider.
value - The initial value of the JSlider.
Throws:
IllegalArgumentException - if orientation is not one of the specified values.
IllegalArgumentException - if value is not in the specified range.
IllegalArgumentException - if minimum is greater than maximum.

JSlider

public JSlider(BoundedRangeModel model)

Creates a new horizontal JSlider instance with the given model.
Parameters:
model - The model (null not permitted).
Throws:
NullPointerException - if model is null.

addChangeListener

public void addChangeListener(ChangeListener listener)

Registers a listener with the slider so that it will receive ChangeEvent notifications. Note that change events generated by the slider's model will be forwarded automatically to the slider's listeners.
Parameters:
listener - the listener to register.
See Also:
removeChangeListener(ChangeListener)

createChangeListener

protected ChangeListener createChangeListener()

Creates a ChangeListener that is added to the slider's model and forwards change events generated by the model to the listeners that are registered with the JSlider (by calling the fireStateChanged() method).
Returns:
A new listener.

createStandardLabels

public Hashtable<K,V> createStandardLabels(int increment)

Creates a hashtable of (Integer, JLabel) pairs that can be used as a label table for this slider. The labels will start from the slider's minimum and increase by the increment. Each label will have a text string indicating its integer value.
Parameters:
increment - The increment between labels (must be > 0).
Returns:
A hashtable containing the labels.
Throws:
IllegalArgumentException - if increment is not greater than zero.

createStandardLabels

public Hashtable<K,V> createStandardLabels(int increment,
                                      int start)

Creates a hashtable of (Integer, JLabel) pairs that can be used as a label table for this slider. The labels will start from the given start value and increase by the increment. Each label will have a text string indicating its integer value.
Parameters:
increment - The increment between labels (must be > 0).
start - The value to start from.
Returns:
A hashtable with the labels and their keys.
Throws:
IllegalArgumentException - if increment is not greater than zero, or start is not within the range of the model.

fireStateChanged

protected void fireStateChanged()

Sends a ChangeEvent to all registered listeners, with this slider as the source.

getAccessibleContext

public AccessibleContext getAccessibleContext()

Returns the object that provides accessibility features for this JSlider component.
Specified by:
getAccessibleContext in interface Accessible
Overrides:
getAccessibleContext in interface JComponent
Returns:
The accessible context (an instance of JSlider.AccessibleJSlider).

getChangeListeners

public ChangeListener[] getChangeListeners()

Returns an array containing all the ChangeListener instances registered with this slider. If no listeners are registered, this method returns an empty array.
Returns:
An array array containing all the ChangeListener instances registered with this slider (possibly empty, but never null).

getExtent

public int getExtent()

Returns the slider's extent value, obtained from the slider's model.
Returns:
The extent value.
See Also:
setExtent(int)

getInverted

public boolean getInverted()

Returns the flag that controls whether or not the value scale for the slider is inverted (the default value is false).
Returns:
The flag that controls whether or not the value scale for the slider is inverted.
See Also:
setInverted(boolean)

getLabelTable

public Dictionary<K,V> getLabelTable()

Returns the label table for the slider.
Returns:
The label table for the slider (possibly null).
See Also:
setLabelTable(Dictionary)

getMajorTickSpacing

public int getMajorTickSpacing()

Returns the distance between major tick marks along the slider's value scale.
Returns:
The amount of units between each major tick mark.
See Also:
setMajorTickSpacing(int)

getMaximum

public int getMaximum()

Returns the slider's maximum value (obtained from the slider's model).
Returns:
The maximum value of the slider.
See Also:
setMaximum(int)

getMinimum

public int getMinimum()

Returns the minimum value of the slider (from the slider's model).
Returns:
The minimum value of the slider.
See Also:
setMinimum(int)

getMinorTickSpacing

public int getMinorTickSpacing()

Returns the distance between minor tick marks along the slider's value scale.
Returns:
The distance between minor tick marks along the slider's value scale.
See Also:
setMinorTickSpacing(int)

getModel

public BoundedRangeModel getModel()

Returns the slider's model, which stores the minimum, maximum and current values.
Returns:
The slider's model.
See Also:
setModel(BoundedRangeModel)

getOrientation

public int getOrientation()

Returns the orientation of the slider, either SwingConstants.HORIZONTAL or SwingConstants.VERTICAL.
Returns:
The orientation of the slider.
See Also:
setOrientation(int)

getPaintLabels

public boolean getPaintLabels()

Returns the flag that controls whether or not labels are painted for the tick marks along the slider.
Returns:
Whether labels will be painted.
See Also:
setPaintLabels(boolean)

getPaintTicks

public boolean getPaintTicks()

Returns the flag that controls whether or not tick marks are painted along the slider's value scale.
Returns:
true if tick marks should be painted, and false if tick marks should not be painted.
See Also:
setPaintTicks(boolean)

getPaintTrack

public boolean getPaintTrack()

Returns the flag that controls whether or not the track is painted.
Returns:
Whether the track will be painted.
See Also:
setPaintTrack(boolean)

getSnapToTicks

public boolean getSnapToTicks()

Returns the flag that controls whether the slider thumb will snap to ticks. Sliders that snap to ticks will automatically move the thumb to the nearest tick mark.
Returns:
true if the slider thumb automatically.
See Also:
setSnapToTicks(boolean)

getUI

public SliderUI getUI()

Returns the slider's UI delegate.
Returns:
The slider's UI delegate.

getUIClassID

public String getUIClassID()

Returns the suffix ("SliderUI" in this case) used to determine the class name for a UI delegate that can provide the look and feel for a JSlider.
Overrides:
getUIClassID in interface JComponent
Returns:
"SliderUI".

getValue

public int getValue()

Returns the slider's value (from the slider's model).
Returns:
The value of the slider.
See Also:
setValue(int)

getValueIsAdjusting

public boolean getValueIsAdjusting()

Returns the valueIsAdjusting flag from the slider's model.
Returns:
The valueIsAdjusting flag from the slider's model.
See Also:
setValueIsAdjusting(boolean)

paramString

protected String paramString()

Returns an implementation-dependent string describing the attributes of this JSlider.
Overrides:
paramString in interface JComponent
Returns:
A string describing the attributes of this JSlider (never null).

removeChangeListener

public void removeChangeListener(ChangeListener listener)

Removes a listener from this slider so that it will no longer receive ChangeEvent notifications from the slider.
Parameters:
listener - The listener to remove.
See Also:
addChangeListener(ChangeListener)

setExtent

public void setExtent(int extent)

Sets the slider's extent value and sends a ChangeEvent to all registered listeners. Note that the model will fire a change event to all of its registered listeners first (with the model as the event source) and then the slider will fire another change event to all of its registered listeners (this time with the slider as the event source).
Parameters:
extent - The extent value for this slider.
See Also:
getExtent()

setInverted

public void setInverted(boolean inverted)

Sets the flag that controls whether or not the value scale for the slider is inverted and, if the new flag value is different to the old flag value, sends a PropertyChangeEvent to all registered listeners. Typically, a horizontal slider will display a scale that increases from left to right, but this is reversed if the 'inverted' flag is set to true. Similarly, a vertical slider will display a scale that increases from bottom to top, and this is reversed if the 'inverted' flag is set to true.
Parameters:
inverted - the new flag value.
See Also:
getInverted()

setLabelTable

public void setLabelTable(Dictionary<K,V> table)

Sets the table of labels for the slider and sends a PropertyChangeEvent (with the property name "labelTable") to all registered listeners.
Parameters:
table - the table of labels (null permitted).
See Also:
getLabelTable()

setMajorTickSpacing

public void setMajorTickSpacing(int spacing)

Sets the distance between major tick marks along the slider's value scale, and sends a PropertyChangeEvent (with the property name "majorTickSpacing") to all registered listeners.
Parameters:
spacing - the distance between major tick marks.
See Also:
getMajorTickSpacing()

setMaximum

public void setMaximum(int maximum)

Sets the maximum value of the slider and fires a PropertyChangeEvent (with the property name "maximum") to all registered listeners. Note that:

the maximum value is stored in the slider's model (see getModel());
in addition to the property change event, the slider also fires a ChangeEvent.

Parameters:
maximum - The maximum value of the slider.
See Also:
getMaximum()

setMinimum

public void setMinimum(int minimum)

Sets the minimum value of the slider and fires a PropertyChangeEvent (with the property name "minimum") to all registered listeners. Note that:

the minimum value is stored in the slider's model (see getModel());
in addition to the property change event, the slider also fires a ChangeEvent.

Parameters:
minimum - The minimum value of the slider.
See Also:
getMinimum()

setMinorTickSpacing

public void setMinorTickSpacing(int spacing)

Sets the distance between minor tick marks along the slider's value scale, and sends a PropertyChangeEvent (with the property name "minorTickSpacing") to all registered listeners.
Parameters:
spacing - the distance between minor tick marks.
See Also:
getMinorTickSpacing()

setModel

public void setModel(BoundedRangeModel model)

Sets the slider's model and sends a PropertyChangeEvent (with the property name "model") to all registered listeners. The change listener that the slider registered with the original model is removed and added to the new model (this ensures that ChangeEvent notifications generated by the model are automatically forwarded to listeners that are registered with the slider).
Parameters:
model - The model to use with the slider.
See Also:
getModel()

setOrientation

public void setOrientation(int orientation)

Sets the orientation for the slider and sends a PropertyChangeEvent (with the property name "orientation") to all registered listeners.
Parameters:
orientation - the orientation (one of SwingConstants.HORIZONTAL or SwingConstants.VERTICAL).
Throws:
IllegalArgumentException - if orientation is not one of the permitted values.
See Also:
getOrientation()

setPaintLabels

public void setPaintLabels(boolean paint)

Sets the flag that controls whether or not labels are painted for the tick marks along the slider and sends a PropertyChangeEvent (with the property name "paintLabels") to all registered listeners.
Parameters:
paint - Whether labels will be painted.
See Also:
getPaintLabels()

setPaintTicks

public void setPaintTicks(boolean paint)

Sets the flag that controls whether or not tick marks are painted along the slider's value scale, and sends a PropertyChangeEvent (with the property name "paintTicks") to all registered listeners. In addition to setting this property to true, one or both of the minor tick spacing and major tick spacing attributes must be set to a value greater than 0 in order for ticks to be painted.
Parameters:
paint - Whether ticks will be painted.
See Also:
getPaintTicks()

setPaintTrack

public void setPaintTrack(boolean paint)

Sets the flag that controls whether or not the track is painted, and sends a PropertyChangeEvent (for the "paintTrack" property) to all registered listeners.
Parameters:
paint - Whether the track will be painted.
See Also:
getPaintTrack()

setSnapToTicks

public void setSnapToTicks(boolean snap)

Sets the flag that controls whether the slider thumb will snap to ticks and sends a PropertyChangeEvent (with the property name 'snapToTicks') to all registered listeners. Sliders that snap to ticks will automatically move the thumb to the nearest tick mark.
Parameters:
snap - the new flag value.
See Also:
getSnapToTicks()

setUI

public void setUI(SliderUI ui)

Sets the slider's UI delegate.
Parameters:
ui - the UI delegate.

setValue

public void setValue(int value)

Sets the slider's value and sends a ChangeEvent to all registered listeners. Note that the model will fire a change event to all of its registered listeners first (with the model as the event source) and then the slider will fire another change event to all of its registered listeners (this time with the slider as the event source).
Parameters:
value - the new value.
See Also:
getValue()

setValueIsAdjusting

public void setValueIsAdjusting(boolean adjusting)

Sets the valueIsAdjusting flag in the slider's model, and sends a ChangeEvent to all registered listeners.
Parameters:
adjusting - the new flag value.
See Also:
getValueIsAdjusting()

updateLabelUIs

protected void updateLabelUIs()

Resets the UI delegates for the labels in the labelTable to the default for the current look and feel.

updateUI

public void updateUI()

Sets this slider's UI delegate to the default (obtained from the UIManager) for the current look and feel.
Overrides:
updateUI in interface JComponent

JSlider.java -- Copyright (C) 2002, 2004, 2005, 2006, Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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javax.swing

Class JSlider

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JComponent

Nested classes/interfaces inherited from class java.awt.Container

Nested classes/interfaces inherited from class java.awt.Component

Field Summary

Fields inherited from class javax.swing.JComponent

Fields inherited from class java.awt.Component

Fields inherited from interface java.awt.image.ImageObserver

Fields inherited from interface javax.swing.SwingConstants

Constructor Summary

Method Summary

Methods inherited from class javax.swing.JComponent

Methods inherited from class java.awt.Container

Methods inherited from class java.awt.Component

Methods inherited from class java.lang.Object

Field Details

changeEvent

changeListener

majorTickSpacing

minorTickSpacing

orientation

sliderModel

snapToTicks

Constructor Details

JSlider

JSlider

JSlider

JSlider

JSlider

JSlider

Method Details

addChangeListener

createChangeListener

createStandardLabels

createStandardLabels

fireStateChanged

getAccessibleContext

getChangeListeners

getExtent

getInverted

getLabelTable

getMajorTickSpacing

getMaximum

getMinimum

getMinorTickSpacing

getModel

getOrientation

getPaintLabels

getPaintTicks

getPaintTrack

getSnapToTicks

getUI

getUIClassID

getValue

getValueIsAdjusting

paramString

removeChangeListener

setExtent

setInverted

setLabelTable

setMajorTickSpacing

setMaximum

setMinimum

setMinorTickSpacing

setModel

setOrientation

setPaintLabels

setPaintTicks

setPaintTrack

setSnapToTicks

setUI

setValue

setValueIsAdjusting

updateLabelUIs

updateUI