javax.swing.plaf.basic

Class BasicTextAreaUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.TextUI

javax.swing.plaf.basic.BasicTextUI

javax.swing.plaf.basic.BasicTextAreaUI

All Implemented Interfaces:

ViewFactory

Direct Known Subclasses:

SynthTextAreaUI

public class BasicTextAreaUI
extends BasicTextUI

Provides the look and feel for a plain text editor. In this implementation the default UI is extended to act as a simple view factory.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see XMLEncoder.

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.plaf.basic.BasicTextUI

BasicTextUI.BasicCaret, BasicTextUI.BasicHighlighter

Constructor Summary

Constructors

Constructor and Description
BasicTextAreaUI() Constructs a new BasicTextAreaUI object.

Method Summary

Modifier and Type	Method and Description
View	create(Element elem) Creates the view for an element.
static ComponentUI	createUI(JComponent ta) Creates a UI for a JTextArea.
int	getBaseline(JComponent c, int width, int height) Returns the baseline.
Component.BaselineResizeBehavior	getBaselineResizeBehavior(JComponent c) Returns an enum indicating how the baseline of the component changes as the size changes.
Dimension	getMinimumSize(JComponent c) The method is overridden to take into account caret width.
Dimension	getPreferredSize(JComponent c) The method is overridden to take into account caret width.
protected String	getPropertyPrefix() Fetches the name used as a key to look up properties through the UIManager.
protected void	installDefaults() Initializes component properties, such as font, foreground, background, caret color, selection color, selected text color, disabled text color, and border color.
protected void	propertyChange(PropertyChangeEvent evt) This method gets called when a bound property is changed on the associated JTextComponent.

Methods inherited from class javax.swing.plaf.basic.BasicTextUI

create, createCaret, createHighlighter, createKeymap, damageRange, damageRange, getComponent, getEditorKit, getKeymapName, getMaximumSize, getNextVisualPositionFrom, getRootView, getToolTipText, getVisibleEditorRect, installKeyboardActions, installListeners, installUI, modelChanged, modelToView, modelToView, paint, paintBackground, paintSafely, setView, uninstallDefaults, uninstallKeyboardActions, uninstallListeners, uninstallUI, update, viewToModel, viewToModel

Methods inherited from class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicTextAreaUI

public BasicTextAreaUI()

Constructs a new BasicTextAreaUI object.

Method Detail

createUI

public static ComponentUI createUI(JComponent ta)

Creates a UI for a JTextArea.

Parameters:

ta - a text area

Returns:

the UI

getPropertyPrefix

protected String getPropertyPrefix()

Fetches the name used as a key to look up properties through the UIManager. This is used as a prefix to all the standard text properties.

Specified by:

getPropertyPrefix in class BasicTextUI

Returns:

the name ("TextArea")

installDefaults

protected void installDefaults()

Description copied from class: BasicTextUI

Initializes component properties, such as font, foreground, background, caret color, selection color, selected text color, disabled text color, and border color. The font, foreground, and background properties are only set if their current value is either null or a UIResource, other properties are set if the current value is null.

Overrides:

installDefaults in class BasicTextUI

See Also:

BasicTextUI.uninstallDefaults(), BasicTextUI.installUI(javax.swing.JComponent)

propertyChange

protected void propertyChange(PropertyChangeEvent evt)

This method gets called when a bound property is changed on the associated JTextComponent. This is a hook which UI implementations may change to reflect how the UI displays bound properties of JTextComponent subclasses. This is implemented to rebuild the View when the WrapLine or the WrapStyleWord property changes.

Overrides:

propertyChange in class BasicTextUI

Parameters:

evt - the property change event

getPreferredSize

public Dimension getPreferredSize(JComponent c)

The method is overridden to take into account caret width.

Overrides:

getPreferredSize in class BasicTextUI

Throws:

IllegalArgumentException - if invalid value is passed

Parameters:

c - the editor component

Returns:

the preferred size

Since:

1.5

See Also:

JComponent.getPreferredSize(), LayoutManager.preferredLayoutSize(java.awt.Container)

getMinimumSize

public Dimension getMinimumSize(JComponent c)

The method is overridden to take into account caret width.

Overrides:

getMinimumSize in class BasicTextUI

Throws:

IllegalArgumentException - if invalid value is passed

Parameters:

c - the editor component

Returns:

the minimum size

Since:

1.5

See Also:

JComponent.getMinimumSize(), LayoutManager.minimumLayoutSize(java.awt.Container), ComponentUI.getPreferredSize(javax.swing.JComponent)

create

public View create(Element elem)

Creates the view for an element. Returns a WrappedPlainView or PlainView.

Specified by:

create in interface ViewFactory

Overrides:

create in class BasicTextUI

Parameters:

elem - the element

Returns:

the view

See Also:

View

getBaseline

public int getBaseline(JComponent c,
                       int width,
                       int height)

Returns the baseline.

Overrides:

getBaseline in class ComponentUI

Throws:

NullPointerException - if c is null

IllegalArgumentException - if width or height is < 0

Parameters:

c - JComponent baseline is being requested for

width - the width to get the baseline for

height - the height to get the baseline for

Returns:

baseline or a value < 0 indicating there is no reasonable baseline

Since:

1.6

See Also:

JComponent.getBaseline(int, int)

getBaselineResizeBehavior

public Component.BaselineResizeBehavior getBaselineResizeBehavior(JComponent c)

Returns an enum indicating how the baseline of the component changes as the size changes.

Overrides:

getBaselineResizeBehavior in class ComponentUI

Throws:

NullPointerException - if c is null

Parameters:

c - JComponent to return baseline resize behavior for

Returns:

an enum indicating how the baseline changes as the component size changes

Since:

1.6

See Also:

JComponent.getBaseline(int, int)