Class BasicTextAreaUI

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.

Constructors

BasicTextAreaUI

public BasicTextAreaUI()

Constructs a new BasicTextAreaUI object.

Methods

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

Parameters:

c - the editor component

Returns:

the preferred size

Throws:

IllegalArgumentException - if invalid value is passed

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

Parameters:

c - the editor component

Returns:

the minimum size

Throws:

IllegalArgumentException - if invalid value is passed

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

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

Throws:

NullPointerException - if c is null

IllegalArgumentException - if width or height is < 0

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

Parameters:

c - JComponent to return baseline resize behavior for

Returns:

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

Throws:

NullPointerException - if c is null

Since:

1.6

See Also:

JComponent.getBaseline(int, int)