Class EmptyBorder

java.lang.Object

vaadinx.swing.border.AbstractBorder

vaadinx.swing.border.EmptyBorder

All Implemented Interfaces:

Serializable, Border

Direct Known Subclasses:

MatteBorder

public class EmptyBorder
extends AbstractBorder

Port of EmptyBorder. Invisible border that only adds insets — in CSS terms, pure padding.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected int	bottom
protected int	left
protected int	right
protected int	top

Constructor Summary

Constructors

Constructor	Description
EmptyBorder(int top, int left, int bottom, int right)
EmptyBorder(Insets borderInsets)

Method Summary

Modifier and Type	Method	Description
void	applyCss(com.vaadin.flow.dom.Element element)	Write this border's CSS onto the target element.
Insets	getBorderInsets(Component c)
Insets	getBorderInsets(Component c, Insets target)	Fill-the-arg variant of getBorderInsets — concrete borders override when they want to avoid the Insets allocation.
boolean	isBorderOpaque()

Methods inherited from class AbstractBorder

clearBorderCss, paintBorder

Methods inherited from class Object

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

Field Details

left

protected int left

right

protected int right

top

protected int top

bottom

protected int bottom

Constructor Details

EmptyBorder

public EmptyBorder(int top,
 int left,
 int bottom,
 int right)

EmptyBorder

public EmptyBorder(Insets borderInsets)

Method Details

getBorderInsets

public Insets getBorderInsets(Component c)

Specified by:

getBorderInsets in interface Border

Overrides:

getBorderInsets in class AbstractBorder

getBorderInsets

public Insets getBorderInsets(Component c,
 Insets target)

Description copied from class: AbstractBorder

Fill-the-arg variant of getBorderInsets — concrete borders override when they want to avoid the Insets allocation. Default reads AbstractBorder.getBorderInsets(vaadinx.awt.Component) and copies.

Overrides:

getBorderInsets in class AbstractBorder

isBorderOpaque

public boolean isBorderOpaque()

Specified by:

isBorderOpaque in interface Border

Overrides:

isBorderOpaque in class AbstractBorder

applyCss

public void applyCss(com.vaadin.flow.dom.Element element)

Description copied from class: AbstractBorder

Write this border's CSS onto the target element. Called by JComponent.setBorder(Border). Concrete border classes override to emit the CSS that represents them (padding for EmptyBorder, border for LineBorder, per-side for MatteBorder, …). The base implementation clears any previously-installed border CSS via AbstractBorder.clearBorderCss(Element) and writes nothing, which is the honest behaviour for a user-authored custom AbstractBorder that didn't override this hook.

Typical override: clearBorderCss(e); set("border", …);. Always clear first so a previous border's keys don't linger.

Overrides:

applyCss in class AbstractBorder