Module javafx.controls

Package javafx.scene.control.skin

Class TextAreaSkin

java.lang.Object

javafx.scene.control.SkinBase<T>

javafx.scene.control.skin.TextInputControlSkin<TextArea>

javafx.scene.control.skin.TextAreaSkin

All Implemented Interfaces:

Skin<T>

public class TextAreaSkin
extends TextInputControlSkin<TextArea>

Default skin implementation for the TextArea control.

Since:

9

See Also:

TextArea

Property Summary

Properties inherited from class javafx.scene.control.skin.TextInputControlSkin

forwardBias, highlightFill, highlightTextFill, promptTextFill, textFill

Nested Class Summary

Nested classes/interfaces inherited from class javafx.scene.control.skin.TextInputControlSkin

TextInputControlSkin.Direction, TextInputControlSkin.TextUnit

Constructor Summary

Constructors

Constructor	Description
TextAreaSkin(TextArea control)	Creates a new TextAreaSkin instance, installing the necessary child nodes into the Control children list, as well as the necessary input mappings for handling key, mouse, etc events.

Method Summary

Modifier and Type	Method	Description
protected void	addHighlight(List<? extends Node> nodes, int start)	Adds highlight for composed text from Input Method.
double	computeBaselineOffset(double topInset, double rightInset, double bottomInset, double leftInset)	Calculates the baseline offset based on the first managed child.
void	dispose()	Called by a Skinnable when the Skin is replaced on the Skinnable.
Bounds	getCaretBounds()
Rectangle2D	getCharacterBounds(int index)	Returns the bounds of the character at a given index.
HitInfo	getIndex(double x, double y)	Performs a hit test, mapping point to index in the content.
protected int	getInsertionPoint(double x, double y)	Returns the insertion point for a given location.
Point2D	getMenuPosition()	Returns the position to be used for a context menu, based on the location of the caret handle or selection handles.
protected PathElement[]	getRangeShape(int start, int end)
protected PathElement[]	getUnderlineShape(int start, int end)
protected void	invalidateMetrics()	Invalidates cached min and pref sizes for the TextInputControl.
protected void	layoutChildren(double contentX, double contentY, double contentWidth, double contentHeight)	Called during the layout pass of the scenegraph.
void	moveCaret(TextInputControlSkin.TextUnit unit, TextInputControlSkin.Direction dir, boolean select)	Moves the caret by one of the given text unit, in the given direction.
void	positionCaret(HitInfo hit, boolean select)	Moves the caret to the specified position.
protected Object	queryAccessibleAttribute(AccessibleAttribute attribute, Object... parameters)	This method is called by the assistive technology to request the value for an attribute.
protected void	removeHighlight(List<? extends Node> nodes)	Removes highlight for composed text from Input Method.
protected void	scrollCharacterToVisible(int index)	Ensures that the character at a given index is visible.
protected void	updateHighlightFill()	Called when highlightFill property changes.

Methods inherited from class java.lang.Object

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

Methods inherited from class javafx.scene.control.SkinBase

computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, computePrefHeight, computePrefWidth, consumeMouseEvents, getChildren, getNode, getSkinnable, layoutInArea, layoutInArea, layoutInArea, positionInArea, positionInArea, pseudoClassStateChanged, registerChangeListener, snappedBottomInset, snappedLeftInset, snappedRightInset, snappedTopInset, snapPosition, snapPositionX, snapPositionY, snapSize, snapSizeX, snapSizeY, snapSpace, snapSpaceX, snapSpaceY, unregisterChangeListeners

Methods inherited from class javafx.scene.control.skin.TextInputControlSkin

executeAccessibleAction, forwardBiasProperty, getClassCssMetaData, getCssMetaData, getHighlightFill, getHighlightTextFill, getPromptTextFill, getTextFill, handleInputMethodEvent, highlightFillProperty, highlightTextFillProperty, isForwardBias, maskText, promptTextFillProperty, setCaretAnimating, setForwardBias, setHighlightFill, setHighlightTextFill, setPromptTextFill, setTextFill, textFillProperty, updateHighlightTextFill, updateTextFill

Constructor Detail

TextAreaSkin

public TextAreaSkin(TextArea control)

Creates a new TextAreaSkin instance, installing the necessary child nodes into the Control children list, as well as the necessary input mappings for handling key, mouse, etc events.

Parameters:

control - The control that this skin should be installed onto.

Method Detail

invalidateMetrics

protected void invalidateMetrics()

Invalidates cached min and pref sizes for the TextInputControl.

Overrides:

invalidateMetrics in class TextInputControlSkin<TextArea>

layoutChildren

protected void layoutChildren(double contentX,
                              double contentY,
                              double contentWidth,
                              double contentHeight)

Called during the layout pass of the scenegraph.

Overrides:

layoutChildren in class SkinBase<TextArea>

Parameters:

contentX - the x position

contentY - the y position

contentWidth - the width

contentHeight - the height

updateHighlightFill

protected void updateHighlightFill()

Called when highlightFill property changes.

Overrides:

updateHighlightFill in class TextInputControlSkin<TextArea>

getIndex

public HitInfo getIndex(double x,
                        double y)

Performs a hit test, mapping point to index in the content.

Parameters:

x - the x coordinate of the point.

y - the y coordinate of the point.

Returns:

a HitInfo object describing the index and forward bias.

moveCaret

public void moveCaret(TextInputControlSkin.TextUnit unit,
                      TextInputControlSkin.Direction dir,
                      boolean select)

Moves the caret by one of the given text unit, in the given direction. Note that only certain combinations are valid, depending on the implementing subclass.

Specified by:

moveCaret in class TextInputControlSkin<TextArea>

Parameters:

unit - the unit of text to move by.

dir - the direction of movement.

select - whether to extends the selection to the new posititon.

getUnderlineShape

protected PathElement[] getUnderlineShape(int start,
                                          int end)

Specified by:

getUnderlineShape in class TextInputControlSkin<TextArea>

Parameters:

start - the start

end - the end

Returns:

the path elements describing the shape of the underline for the given range.

getRangeShape

protected PathElement[] getRangeShape(int start,
                                      int end)

Specified by:

getRangeShape in class TextInputControlSkin<TextArea>

Parameters:

start - the start

end - the end

Returns:

the path elements describing the bounding rectangles for the given range of text.

addHighlight

protected void addHighlight(List<? extends Node> nodes,
                            int start)

Adds highlight for composed text from Input Method.

Specified by:

addHighlight in class TextInputControlSkin<TextArea>

Parameters:

nodes - the list of nodes

start - the start

removeHighlight

protected void removeHighlight(List<? extends Node> nodes)

Removes highlight for composed text from Input Method.

Specified by:

removeHighlight in class TextInputControlSkin<TextArea>

Parameters:

nodes - the list of nodes

getMenuPosition

public Point2D getMenuPosition()

Returns the position to be used for a context menu, based on the location of the caret handle or selection handles. This is supported only on touch displays and does not use the location of the mouse.

Overrides:

getMenuPosition in class TextInputControlSkin<TextArea>

Returns:

the position to be used for this context menu

getCaretBounds

public Bounds getCaretBounds()

Returns:

the Bounds of the caret shape, relative to the TextArea.

queryAccessibleAttribute

protected Object queryAccessibleAttribute(AccessibleAttribute attribute,
                                          Object... parameters)

This method is called by the assistive technology to request the value for an attribute.

This method is commonly overridden by subclasses to implement attributes that are required for a specific role.
If a particular attribute is not handled, the superclass implementation must be called.

Overrides:

queryAccessibleAttribute in class SkinBase<TextArea>

Parameters:

attribute - the requested attribute

parameters - optional list of parameters

Returns:

the value for the requested attribute

See Also:

AccessibleAttribute, Node.queryAccessibleAttribute(javafx.scene.AccessibleAttribute, java.lang.Object...)

dispose

public void dispose()

Called by a Skinnable when the Skin is replaced on the Skinnable. This method allows a Skin to implement any logic necessary to clean up itself after the Skin is no longer needed. It may be used to release native resources. The methods Skin.getSkinnable() and Skin.getNode() should return null following a call to dispose. Calling dispose twice has no effect.

Specified by:

dispose in interface Skin<T extends TextInputControl>

Overrides:

dispose in class SkinBase<TextArea>

computeBaselineOffset

public double computeBaselineOffset(double topInset,
                                    double rightInset,
                                    double bottomInset,
                                    double leftInset)

Calculates the baseline offset based on the first managed child. If there is no such child, returns Node.getBaselineOffset().

Overrides:

computeBaselineOffset in class SkinBase<TextArea>

Parameters:

topInset - the pixel snapped top inset

rightInset - the pixel snapped right inset

bottomInset - the pixel snapped bottom inset

leftInset - the pixel snapped left inset

Returns:

baseline offset

getInsertionPoint

protected int getInsertionPoint(double x,
                                double y)

Returns the insertion point for a given location.

Overrides:

getInsertionPoint in class TextInputControlSkin<TextArea>

Parameters:

x - the x location

y - the y location

Returns:

the insertion point for a given location

positionCaret

public void positionCaret(HitInfo hit,
                          boolean select)

Moves the caret to the specified position.

Parameters:

hit - the new position and forward bias of the caret.

select - whether to extend selection to the new position.

getCharacterBounds

public Rectangle2D getCharacterBounds(int index)

Returns the bounds of the character at a given index.

Overrides:

getCharacterBounds in class TextInputControlSkin<TextArea>

Parameters:

index - the index

Returns:

the bounds of the character at a given index

scrollCharacterToVisible

protected void scrollCharacterToVisible(int index)

Ensures that the character at a given index is visible.

Overrides:

scrollCharacterToVisible in class TextInputControlSkin<TextArea>

Parameters:

index - the index