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Class com.bulletproof.gui.Scrollbar

java.lang.Object
   |
   +----com.bulletproof.gui.Component
           |
           +----com.bulletproof.gui.Scrollbar

public class Scrollbar

extends Component

HORIZONTAL

The horizontal Scrollbar variable.

VERTICAL

The vertical Scrollbar variable.

Scrollbar()

Constructs a new vertical Scrollbar.

Scrollbar(int)

Constructs a new Scrollbar with the specified orientation.

Scrollbar(int, int, int, int, int)

Constructs a new Scrollbar with the specified orientation, value, page size, and minumum and maximum values.

addAdjustmentListener(AdjustmentListener)

getMaximum()

Returns the maximum value of this Scrollbar.

getMinimum()

Returns the minimum value of this Scrollbar.

getMinimumSize()

Gets the minimum size of this component.

getOrientation()

Returns the orientation of this Scrollbar.

getValue()

Returns the current value of this Scrollbar.

getVisible()

Returns the visible amount of this Scrollbar.

paint(Graphics)

Paints the component.

processMouseEvent(MouseEvent)

Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects.

removeAdjustmentListener(AdjustmentListener)

setBlockIncrement(int)

Sets the block increment for this scrollbar.

setMaximum(int)

Sets the maximum value for this Scrollbar.

setMinimum(int)

Sets the minimum value for this Scrollbar.

setUnitIncrement(int)

Sets the unit increment for this scrollbar.

setValue(int)

Sets the value of this Scrollbar to the specified value.

setValues(int, int, int, int)

Sets the values for this Scrollbar.

setVisible(int)

Sets the visible amount of this Scrollbar, which is the range of values represented by the width of the scroll bar's bubble.

update(Graphics)

Updates the component.

 public static final int HORIZONTAL

The horizontal Scrollbar variable.

 public static final int VERTICAL

The vertical Scrollbar variable.

 public Scrollbar()

Constructs a new vertical Scrollbar.

 public Scrollbar(int orientation)

Constructs a new Scrollbar with the specified orientation.

Parameters:

orientation - either Scrollbar.HORIZONTAL or Scrollbar.VERTICAL

Throws: IllegalArgumentException

When an illegal scrollbar orientation is given.

 public Scrollbar(int orientation,
                  int value,
                  int visible,
                  int minimum,
                  int maximum)

Constructs a new Scrollbar with the specified orientation, value, page size, and minumum and maximum values.

Parameters:

orientation - either Scrollbar.HORIZONTAL or Scrollbar.VERTICAL

value - the scrollbar's value

visible - the size of the visible portion of the scrollable area. The scrollbar will use this value when paging up or down by a page.

minimum - the minimum value of the scrollbar

maximum - the maximum value of the scrollbar

 public void addAdjustmentListener(AdjustmentListener al)

 public int getValue()

Returns the current value of this Scrollbar.

 public void setValue(int newValue)

Sets the value of this Scrollbar to the specified value.

Parameters:

value - the new value of the Scrollbar. If this value is below the current minimum or above the current maximum minus the visible amount, it becomes the new one of those values, respectively.

 public int getOrientation()

Returns the orientation of this Scrollbar.

 public int getMinimum()

Returns the minimum value of this Scrollbar.

 public void setMinimum(int newMinimum)

Sets the minimum value for this Scrollbar.

Parameters:

minimum - the minimum value of the scrollbar

 public int getMaximum()

Returns the maximum value of this Scrollbar.

 public void setMaximum(int newMaximum)

Sets the maximum value for this Scrollbar.

Parameters:

maximum - the maximum value of the scrollbar

 public int getVisible()

Returns the visible amount of this Scrollbar.

 public void setVisible(int newAmount)

Sets the visible amount of this Scrollbar, which is the range of values represented by the width of the scroll bar's bubble.

Parameters:

visible - the amount visible per page

 public void setUnitIncrement(int v)

Sets the unit increment for this scrollbar. This is the value that will be added (subtracted) when the user hits the unit down (up) gadgets.

 public void setBlockIncrement(int v)

Sets the block increment for this scrollbar. This is the value that will be added (subtracted) when the user hits the block down (up) gadgets.

 public void setValues(int value,
                       int visible,
                       int minimum,
                       int maximum)

Sets the values for this Scrollbar. This method enforces the following constraints:

• The maximum must be greater than the minimum
• The value must be greater than or equal to the minumum and less than or equal to the maximum minus the visible amount
• The visible amount must be greater than 1 and less than or equal to the difference between the maximum and minimum values.

Values which do not meet these criteria are quietly coerced to the appropriate boundary value.

Parameters:

value - is the position in the current window.

visible - is the amount visible per page

minimum - is the minimum value of the scrollbar

maximum - is the maximum value of the scrollbar

 public void update(Graphics g)

Updates the component.

Overrides:

update in class Component

 public void paint(Graphics g)

Paints the component.

Overrides:

paint in class Component

 public void processMouseEvent(MouseEvent me)

Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects.

Overrides:

processMouseEvent in class Component

 public void removeAdjustmentListener(AdjustmentListener al)

 public Dimension getMinimumSize()

Gets the minimum size of this component.

Overrides:

getMinimumSize in class Component

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