Class ScrollBar

java.lang.Object

javafx.scene.Node

javafx.scene.Parent

javafx.scene.layout.Region

javafx.scene.control.Control

javafx.scene.control.ScrollBar

All Implemented Interfaces:

Styleable, EventTarget, Skinnable

public class ScrollBar
extends Control

Either a horizontal or vertical bar with increment and decrement buttons and a "thumb" with which the user can interact. Typically not used alone but used for building up more complicated controls such as the ScrollPane and ListView.

ScrollBar sets focusTraversable to false.

This example creates a vertical ScrollBar:

 ScrollBar s1 = new ScrollBar();
 s1.setOrientation(Orientation.VERTICAL);

Since:

JavaFX 2.0

Property Summary

Properties

Type	Property	Description
final DoubleProperty	blockIncrement	The amount by which to adjust the scrollbar if the track of the bar is clicked.
final DoubleProperty	max	The maximum value represented by this ScrollBar.
final DoubleProperty	min	The minimum value represented by this ScrollBar.
final ObjectProperty<Orientation>	orientation	The orientation of the ScrollBar can either be HORIZONTAL or VERTICAL.
final DoubleProperty	unitIncrement	The amount by which to adjust the ScrollBar when the increment or decrement methods are called.
final DoubleProperty	value	The current value represented by this ScrollBar.
final DoubleProperty	visibleAmount	Visible amount of the scrollbar's range, typically represented by the size of the scroll bar's thumb.

Properties declared in class javafx.scene.control.Control

contextMenu, skin, tooltip

Properties declared in class javafx.scene.layout.Region

background, border, cacheShape, centerShape, height, insets, maxHeight, maxWidth, minHeight, minWidth, opaqueInsets, padding, prefHeight, prefWidth, scaleShape, shape, snapToPixel, width

Properties declared in class javafx.scene.Parent

needsLayout

Properties declared in class javafx.scene.Node

accessibleHelp, accessibleRoleDescription, accessibleRole, accessibleText, blendMode, boundsInLocal, boundsInParent, cacheHint, cache, clip, cursor, depthTest, disabled, disable, effectiveNodeOrientation, effect, eventDispatcher, focused, focusTraversable, focusVisible, focusWithin, hover, id, inputMethodRequests, layoutBounds, layoutX, layoutY, localToParentTransform, localToSceneTransform, managed, mouseTransparent, nodeOrientation, onContextMenuRequested, onDragDetected, onDragDone, onDragDropped, onDragEntered, onDragExited, onDragOver, onInputMethodTextChanged, onKeyPressed, onKeyReleased, onKeyTyped, onMouseClicked, onMouseDragEntered, onMouseDragExited, onMouseDragged, onMouseDragOver, onMouseDragReleased, onMouseEntered, onMouseExited, onMouseMoved, onMousePressed, onMouseReleased, onRotate, onRotationFinished, onRotationStarted, onScrollFinished, onScroll, onScrollStarted, onSwipeDown, onSwipeLeft, onSwipeRight, onSwipeUp, onTouchMoved, onTouchPressed, onTouchReleased, onTouchStationary, onZoomFinished, onZoom, onZoomStarted, opacity, parent, pickOnBounds, pressed, rotate, rotationAxis, scaleX, scaleY, scaleZ, scene, style, translateX, translateY, translateZ, viewOrder, visible

Field Summary

Fields declared in class javafx.scene.layout.Region

USE_COMPUTED_SIZE, USE_PREF_SIZE

Fields declared in class javafx.scene.Node

BASELINE_OFFSET_SAME_AS_HEIGHT

Constructor Summary

Constructors

Constructor	Description
ScrollBar()	Creates a new horizontal ScrollBar (ie getOrientation() == Orientation.HORIZONTAL).

Method Summary

Modifier and Type	Method	Description
void	adjustValue(double position)	Adjusts the value property by blockIncrement.
final DoubleProperty	blockIncrementProperty()	The amount by which to adjust the scrollbar if the track of the bar is clicked.
void	decrement()	Decrements the value of the ScrollBar by the unitIncrement
final double	getBlockIncrement()	Gets the value of the blockIncrement property.
static List<CssMetaData<? extends Styleable,?>>	getClassCssMetaData()	Gets the CssMetaData associated with this class, which may include the CssMetaData of its superclasses.
List<CssMetaData<? extends Styleable,?>>	getControlCssMetaData()	Gets the unmodifiable list of the control's CSS-styleable properties.
protected Boolean	getInitialFocusTraversable()	Returns the initial focus traversable state of this control, for use by the JavaFX CSS engine to correctly set its initial value.
final double	getMax()	Gets the value of the max property.
final double	getMin()	Gets the value of the min property.
final Orientation	getOrientation()	Gets the value of the orientation property.
final double	getUnitIncrement()	Gets the value of the unitIncrement property.
final double	getValue()	Gets the value of the value property.
final double	getVisibleAmount()	Gets the value of the visibleAmount property.
void	increment()	Increments the value of the ScrollBar by the unitIncrement
final DoubleProperty	maxProperty()	The maximum value represented by this ScrollBar.
final DoubleProperty	minProperty()	The minimum value represented by this ScrollBar.
final ObjectProperty<Orientation>	orientationProperty()	The orientation of the ScrollBar can either be HORIZONTAL or VERTICAL.
final void	setBlockIncrement(double value)	Sets the value of the blockIncrement property.
final void	setMax(double value)	Sets the value of the max property.
final void	setMin(double value)	Sets the value of the min property.
final void	setOrientation(Orientation value)	Sets the value of the orientation property.
final void	setUnitIncrement(double value)	Sets the value of the unitIncrement property.
final void	setValue(double value)	Sets the value of the value property.
final void	setVisibleAmount(double value)	Sets the value of the visibleAmount property.
final DoubleProperty	unitIncrementProperty()	The amount by which to adjust the ScrollBar when the increment or decrement methods are called.
final DoubleProperty	valueProperty()	The current value represented by this ScrollBar.
final DoubleProperty	visibleAmountProperty()	Visible amount of the scrollbar's range, typically represented by the size of the scroll bar's thumb.

Methods declared in class javafx.scene.control.Control

computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, contextMenuProperty, createDefaultSkin, getContextMenu, getCssMetaData, getSkin, getTooltip, isResizable, setContextMenu, setSkin, setTooltip, skinProperty, tooltipProperty

Methods declared in class javafx.scene.layout.Region

backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computePrefHeight, computePrefWidth, getBackground, getBorder, getHeight, getInsets, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getOpaqueInsets, getPadding, getPrefHeight, getPrefWidth, getShape, getUserAgentStylesheet, getWidth, heightProperty, insetsProperty, isCacheShape, isCenterShape, isScaleShape, isSnapToPixel, layoutInArea, layoutInArea, layoutInArea, layoutInArea, maxHeight, maxHeightProperty, maxWidth, maxWidthProperty, minHeight, minHeightProperty, minWidth, minWidthProperty, opaqueInsetsProperty, paddingProperty, positionInArea, positionInArea, prefHeight, prefHeightProperty, prefWidth, prefWidthProperty, resize, scaleShapeProperty, setBackground, setBorder, setCacheShape, setCenterShape, setHeight, setMaxHeight, setMaxSize, setMaxWidth, setMinHeight, setMinSize, setMinWidth, setOpaqueInsets, setPadding, setPrefHeight, setPrefSize, setPrefWidth, setScaleShape, setShape, setSnapToPixel, setWidth, shapeProperty, snappedBottomInset, snappedLeftInset, snappedRightInset, snappedTopInset, snapPosition, snapPositionX, snapPositionY, snapSize, snapSizeX, snapSizeY, snapSpace, snapSpaceX, snapSpaceY, snapToPixelProperty, widthProperty

Methods declared in class javafx.scene.Parent

getBaselineOffset, getChildren, getChildrenUnmodifiable, getManagedChildren, getStylesheets, isNeedsLayout, layout, layoutChildren, needsLayoutProperty, requestLayout, requestParentLayout, setNeedsLayout, updateBounds

Methods declared in class javafx.scene.Node

accessibleHelpProperty, accessibleRoleDescriptionProperty, accessibleRoleProperty, accessibleTextProperty, addEventFilter, addEventHandler, applyCss, autosize, blendModeProperty, boundsInLocalProperty, boundsInParentProperty, buildEventDispatchChain, cacheHintProperty, cacheProperty, clipProperty, computeAreaInScreen, contains, contains, cursorProperty, depthTestProperty, disabledProperty, disableProperty, effectiveNodeOrientationProperty, effectProperty, eventDispatcherProperty, executeAccessibleAction, fireEvent, focusedProperty, focusTraversableProperty, focusVisibleProperty, focusWithinProperty, getAccessibleHelp, getAccessibleRole, getAccessibleRoleDescription, getAccessibleText, getBlendMode, getBoundsInLocal, getBoundsInParent, getCacheHint, getClip, getContentBias, getCursor, getDepthTest, getEffect, getEffectiveNodeOrientation, getEventDispatcher, getId, getInitialCursor, getInputMethodRequests, getLayoutBounds, getLayoutX, getLayoutY, getLocalToParentTransform, getLocalToSceneTransform, getNodeOrientation, getOnContextMenuRequested, getOnDragDetected, getOnDragDone, getOnDragDropped, getOnDragEntered, getOnDragExited, getOnDragOver, getOnInputMethodTextChanged, getOnKeyPressed, getOnKeyReleased, getOnKeyTyped, getOnMouseClicked, getOnMouseDragEntered, getOnMouseDragExited, getOnMouseDragged, getOnMouseDragOver, getOnMouseDragReleased, getOnMouseEntered, getOnMouseExited, getOnMouseMoved, getOnMousePressed, getOnMouseReleased, getOnRotate, getOnRotationFinished, getOnRotationStarted, getOnScroll, getOnScrollFinished, getOnScrollStarted, getOnSwipeDown, getOnSwipeLeft, getOnSwipeRight, getOnSwipeUp, getOnTouchMoved, getOnTouchPressed, getOnTouchReleased, getOnTouchStationary, getOnZoom, getOnZoomFinished, getOnZoomStarted, getOpacity, getParent, getProperties, getPseudoClassStates, getRotate, getRotationAxis, getScaleX, getScaleY, getScaleZ, getScene, getStyle, getStyleableParent, getStyleClass, getTransforms, getTranslateX, getTranslateY, getTranslateZ, getTypeSelector, getUserData, getViewOrder, hasProperties, hoverProperty, idProperty, inputMethodRequestsProperty, intersects, intersects, isCache, isDisable, isDisabled, isFocused, isFocusTraversable, isFocusVisible, isFocusWithin, isHover, isManaged, isMouseTransparent, isPickOnBounds, isPressed, isVisible, layoutBoundsProperty, layoutXProperty, layoutYProperty, localToParent, localToParent, localToParent, localToParent, localToParent, localToParentTransformProperty, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToSceneTransformProperty, localToScreen, localToScreen, localToScreen, localToScreen, localToScreen, lookup, lookupAll, managedProperty, mouseTransparentProperty, nodeOrientationProperty, notifyAccessibleAttributeChanged, onContextMenuRequestedProperty, onDragDetectedProperty, onDragDoneProperty, onDragDroppedProperty, onDragEnteredProperty, onDragExitedProperty, onDragOverProperty, onInputMethodTextChangedProperty, onKeyPressedProperty, onKeyReleasedProperty, onKeyTypedProperty, onMouseClickedProperty, onMouseDragEnteredProperty, onMouseDragExitedProperty, onMouseDraggedProperty, onMouseDragOverProperty, onMouseDragReleasedProperty, onMouseEnteredProperty, onMouseExitedProperty, onMouseMovedProperty, onMousePressedProperty, onMouseReleasedProperty, onRotateProperty, onRotationFinishedProperty, onRotationStartedProperty, onScrollFinishedProperty, onScrollProperty, onScrollStartedProperty, onSwipeDownProperty, onSwipeLeftProperty, onSwipeRightProperty, onSwipeUpProperty, onTouchMovedProperty, onTouchPressedProperty, onTouchReleasedProperty, onTouchStationaryProperty, onZoomFinishedProperty, onZoomProperty, onZoomStartedProperty, opacityProperty, parentProperty, parentToLocal, parentToLocal, parentToLocal, parentToLocal, parentToLocal, pickOnBoundsProperty, pressedProperty, pseudoClassStateChanged, queryAccessibleAttribute, relocate, removeEventFilter, removeEventHandler, requestFocus, resizeRelocate, rotateProperty, rotationAxisProperty, scaleXProperty, scaleYProperty, scaleZProperty, sceneProperty, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, screenToLocal, screenToLocal, screenToLocal, setAccessibleHelp, setAccessibleRole, setAccessibleRoleDescription, setAccessibleText, setBlendMode, setCache, setCacheHint, setClip, setCursor, setDepthTest, setDisable, setDisabled, setEffect, setEventDispatcher, setEventHandler, setFocused, setFocusTraversable, setHover, setId, setInputMethodRequests, setLayoutX, setLayoutY, setManaged, setMouseTransparent, setNodeOrientation, setOnContextMenuRequested, setOnDragDetected, setOnDragDone, setOnDragDropped, setOnDragEntered, setOnDragExited, setOnDragOver, setOnInputMethodTextChanged, setOnKeyPressed, setOnKeyReleased, setOnKeyTyped, setOnMouseClicked, setOnMouseDragEntered, setOnMouseDragExited, setOnMouseDragged, setOnMouseDragOver, setOnMouseDragReleased, setOnMouseEntered, setOnMouseExited, setOnMouseMoved, setOnMousePressed, setOnMouseReleased, setOnRotate, setOnRotationFinished, setOnRotationStarted, setOnScroll, setOnScrollFinished, setOnScrollStarted, setOnSwipeDown, setOnSwipeLeft, setOnSwipeRight, setOnSwipeUp, setOnTouchMoved, setOnTouchPressed, setOnTouchReleased, setOnTouchStationary, setOnZoom, setOnZoomFinished, setOnZoomStarted, setOpacity, setPickOnBounds, setPressed, setRotate, setRotationAxis, setScaleX, setScaleY, setScaleZ, setStyle, setTranslateX, setTranslateY, setTranslateZ, setUserData, setViewOrder, setVisible, snapshot, snapshot, startDragAndDrop, startFullDrag, styleProperty, toBack, toFront, toString, translateXProperty, translateYProperty, translateZProperty, usesMirroring, viewOrderProperty, visibleProperty

Methods declared in class java.lang.Object

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

Methods declared in interface javafx.css.Styleable

getStyleableNode

Property Details

min

public final DoubleProperty minProperty

The minimum value represented by this ScrollBar. This should be a value less than or equal to max. Default value is 0.

See Also:

• getMin()
• setMin(double)
• minProperty()

max

public final DoubleProperty maxProperty

The maximum value represented by this ScrollBar. This should be a value greater than or equal to min. Default value is 100.

See Also:

• getMax()
• setMax(double)
• maxProperty()

value

public final DoubleProperty valueProperty

The current value represented by this ScrollBar. This value should be between min and max, inclusive.

See Also:

• getValue()
• setValue(double)
• valueProperty()

orientation

public final ObjectProperty<Orientation> orientationProperty

The orientation of the ScrollBar can either be HORIZONTAL or VERTICAL.

See Also:

• getOrientation()
• setOrientation(Orientation)
• orientationProperty()

unitIncrement

public final DoubleProperty unitIncrementProperty

The amount by which to adjust the ScrollBar when the increment or decrement methods are called.

See Also:

• getUnitIncrement()
• setUnitIncrement(double)
• unitIncrementProperty()

blockIncrement

public final DoubleProperty blockIncrementProperty

The amount by which to adjust the scrollbar if the track of the bar is clicked.

See Also:

• getBlockIncrement()
• setBlockIncrement(double)
• blockIncrementProperty()

visibleAmount

public final DoubleProperty visibleAmountProperty

Visible amount of the scrollbar's range, typically represented by the size of the scroll bar's thumb.

See Also:

• getVisibleAmount()
• setVisibleAmount(double)
• visibleAmountProperty()

Constructor Details

ScrollBar

public ScrollBar()

Creates a new horizontal ScrollBar (ie getOrientation() == Orientation.HORIZONTAL).

Method Details

setMin

public final void setMin(double value)

Sets the value of the min property.

Property description:

The minimum value represented by this ScrollBar. This should be a value less than or equal to max. Default value is 0.

Parameters:

value - the value for the min property

See Also:

• getMin()
• minProperty()

getMin

public final double getMin()

Gets the value of the min property.

Property description:

The minimum value represented by this ScrollBar. This should be a value less than or equal to max. Default value is 0.

Returns:

the value of the min property

See Also:

• setMin(double)
• minProperty()

minProperty

public final DoubleProperty minProperty()

The minimum value represented by this ScrollBar. This should be a value less than or equal to max. Default value is 0.

Returns:

the min property

See Also:

• getMin()
• setMin(double)

setMax

public final void setMax(double value)

Sets the value of the max property.

Property description:

The maximum value represented by this ScrollBar. This should be a value greater than or equal to min. Default value is 100.

Parameters:

value - the value for the max property

See Also:

• getMax()
• maxProperty()

getMax

public final double getMax()

Gets the value of the max property.

Property description:

The maximum value represented by this ScrollBar. This should be a value greater than or equal to min. Default value is 100.

Returns:

the value of the max property

See Also:

• setMax(double)
• maxProperty()

maxProperty

public final DoubleProperty maxProperty()

The maximum value represented by this ScrollBar. This should be a value greater than or equal to min. Default value is 100.

Returns:

the max property

See Also:

• getMax()
• setMax(double)

setValue

public final void setValue(double value)

Sets the value of the value property.

Property description:

The current value represented by this ScrollBar. This value should be between min and max, inclusive.

Parameters:

value - the value for the value property

See Also:

• getValue()
• valueProperty()

getValue

public final double getValue()

Gets the value of the value property.

Property description:

The current value represented by this ScrollBar. This value should be between min and max, inclusive.

Returns:

the value of the value property

See Also:

• setValue(double)
• valueProperty()

valueProperty

public final DoubleProperty valueProperty()

The current value represented by this ScrollBar. This value should be between min and max, inclusive.

Returns:

the value property

See Also:

• getValue()
• setValue(double)

setOrientation

public final void setOrientation(Orientation value)

Sets the value of the orientation property.

Property description:

The orientation of the ScrollBar can either be HORIZONTAL or VERTICAL.

Parameters:

value - the value for the orientation property

See Also:

• getOrientation()
• orientationProperty()

getOrientation

public final Orientation getOrientation()

Gets the value of the orientation property.

Property description:

The orientation of the ScrollBar can either be HORIZONTAL or VERTICAL.

Returns:

the value of the orientation property

See Also:

• setOrientation(Orientation)
• orientationProperty()

orientationProperty

public final ObjectProperty<Orientation> orientationProperty()

The orientation of the ScrollBar can either be HORIZONTAL or VERTICAL.

Returns:

the orientation property

See Also:

• getOrientation()
• setOrientation(Orientation)

setUnitIncrement

public final void setUnitIncrement(double value)

Sets the value of the unitIncrement property.

Property description:

The amount by which to adjust the ScrollBar when the increment or decrement methods are called.

Parameters:

value - the value for the unitIncrement property

See Also:

• getUnitIncrement()
• unitIncrementProperty()

getUnitIncrement

public final double getUnitIncrement()

Gets the value of the unitIncrement property.

Property description:

The amount by which to adjust the ScrollBar when the increment or decrement methods are called.

Returns:

the value of the unitIncrement property

See Also:

• setUnitIncrement(double)
• unitIncrementProperty()

unitIncrementProperty

public final DoubleProperty unitIncrementProperty()

The amount by which to adjust the ScrollBar when the increment or decrement methods are called.

Returns:

the unitIncrement property

See Also:

• getUnitIncrement()
• setUnitIncrement(double)

setBlockIncrement

public final void setBlockIncrement(double value)

Sets the value of the blockIncrement property.

Property description:

The amount by which to adjust the scrollbar if the track of the bar is clicked.

Parameters:

value - the value for the blockIncrement property

See Also:

• getBlockIncrement()
• blockIncrementProperty()

getBlockIncrement

public final double getBlockIncrement()

Gets the value of the blockIncrement property.

Property description:

The amount by which to adjust the scrollbar if the track of the bar is clicked.

Returns:

the value of the blockIncrement property

See Also:

• setBlockIncrement(double)
• blockIncrementProperty()

blockIncrementProperty

public final DoubleProperty blockIncrementProperty()

The amount by which to adjust the scrollbar if the track of the bar is clicked.

Returns:

the blockIncrement property

See Also:

• getBlockIncrement()
• setBlockIncrement(double)

setVisibleAmount

public final void setVisibleAmount(double value)

Sets the value of the visibleAmount property.

Property description:

Visible amount of the scrollbar's range, typically represented by the size of the scroll bar's thumb.

Parameters:

value - the value for the visibleAmount property

See Also:

• getVisibleAmount()
• visibleAmountProperty()

getVisibleAmount

public final double getVisibleAmount()

Gets the value of the visibleAmount property.

Property description:

Visible amount of the scrollbar's range, typically represented by the size of the scroll bar's thumb.

Returns:

the value of the visibleAmount property

See Also:

• setVisibleAmount(double)
• visibleAmountProperty()

visibleAmountProperty

public final DoubleProperty visibleAmountProperty()

Visible amount of the scrollbar's range, typically represented by the size of the scroll bar's thumb.

Returns:

the visibleAmount property

See Also:

• getVisibleAmount()
• setVisibleAmount(double)

adjustValue

public void adjustValue(double position)

Adjusts the value property by blockIncrement. The position is the fractional amount between the min and max. For example, it might be 50%. If #minProperty min were 0 and #maxProperty max were 100 and value were 25, then a position of .5 would indicate that we should increment value by blockIncrement. If value were 75, then a position of .5 would indicate that we should decrement value by blockIncrement. Note: This function is intended to be used by experts, primarily by those implementing new Skins or Behaviors. It is not common for developers or designers to access this function directly.

Parameters:

position - the position

increment

public void increment()

Increments the value of the ScrollBar by the unitIncrement

decrement

public void decrement()

Decrements the value of the ScrollBar by the unitIncrement

getClassCssMetaData

public static List<CssMetaData<? extends Styleable,?>> getClassCssMetaData()

Gets the CssMetaData associated with this class, which may include the CssMetaData of its superclasses.

Returns:

the CssMetaData

Since:

JavaFX 8.0

getControlCssMetaData

public List<CssMetaData<? extends Styleable,?>> getControlCssMetaData()

Gets the unmodifiable list of the control's CSS-styleable properties.

Overrides:

getControlCssMetaData in class Control

Returns:

the unmodifiable list of the control's CSS-styleable properties

Since:

JavaFX 8.0

getInitialFocusTraversable

protected Boolean getInitialFocusTraversable()

Returns the initial focus traversable state of this control, for use by the JavaFX CSS engine to correctly set its initial value. This method is overridden as by default UI controls have focus traversable set to true, but that is not appropriate for this control.

Overrides:

getInitialFocusTraversable in class Control

Returns:

the initial focus traversable state of this control

Since:

9