Class EmptyBorder 
All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class EmptyBorder

public class netscape.application.EmptyBorder
    extends netscape.application.Border
{
    /* Constructors
     */
    public EmptyBorder();

    /* Methods
     */
    public static Border emptyBorder();

    public int bottomMargin();
    public void decode(Decoder);
    public void drawInRect(Graphics, int, int, int, int);
    public int leftMargin();
    public int rightMargin();
    public int topMargin();
}
Border subclass with a zero margin border that draws nothing. EmptyBorders act as placeholders for classes that take Borders but do not want to check for null everywhere. As such, only implementors of classes with Borders usually deal with this class. A typical application removes a Border from an interface component by calling setBorder(null), which the component may note by setting its Border to an EmptyBorder instance.

Constructors

EmptyBorder

  public EmptyBorder()
Constructs an EmptyBorder.

Methods

emptyBorder

 
  public static Border emptyBorder()
Convenience method for retrieving the shared EmptyBorder.

leftMargin

 
  public int leftMargin()
Returns the EmptyBorder's left margin of 0 pixels.
Overrides:
leftMargin in class Border

rightMargin

 
  public int rightMargin()
Returns the EmptyBorder's right margin of 0 pixels.
Overrides:
rightMargin in class Border

topMargin

 
  public int topMargin()
Returns the EmptyBorder's top margin of 0 pixels.
Overrides:
topMargin in class Border

bottomMargin

 
  public int bottomMargin()
Returns the EmptyBorder's bottom margin of 0 pixels.
Overrides:
bottomMargin in class Border

drawInRect

 
  public void drawInRect(Graphics g,
                         int x,
                         int y,
                         int width,
                         int height)
Draws the EmptyBorder. This method does nothing.
Overrides:
drawInRect in class Border

decode

 
  public void decode(Decoder decoder) throws CodingException
Empty Borders store no additional state, but implement decode() to replace themselves with the shared EmptyBorder instance, provided they are not a subclass of EmptyBorder.
Overrides:
decode in class Border
See Also:
decode 
All Packages  Class Hierarchy  This Package  Previous  Next  Index