Java™ Platform
Standard Ed. 6

java.awt
Class ScrollPaneAdjustable

java.lang.Object
  extended by java.awt.ScrollPaneAdjustable
All Implemented Interfaces:
Adjustable, Serializable

public class ScrollPaneAdjustable
extends Object
implements Adjustable, Serializable

This class represents the state of a horizontal or vertical scrollbar of a ScrollPane. Objects of this class are returned by ScrollPane methods.

Since:
1.4
See Also:
Serialized Form

Field Summary
 
Fields inherited from interface java.awt.Adjustable
HORIZONTAL, NO_ORIENTATION, VERTICAL
 
Method Summary
 void addAdjustmentListener(AdjustmentListener l)
          Adds the specified adjustment listener to receive adjustment events from this ScrollPaneAdjustable.
 AdjustmentListener[] getAdjustmentListeners()
          Returns an array of all the adjustment listeners registered on this ScrollPaneAdjustable.
 int getBlockIncrement()
          Gets the block value increment for the adjustable object.
 int getMaximum()
          Gets the maximum value of the adjustable object.
 int getMinimum()
          Gets the minimum value of the adjustable object.
 int getOrientation()
          Returns the orientation of this scrollbar.
 int getUnitIncrement()
          Gets the unit value increment for the adjustable object.
 int getValue()
          Gets the current value of the adjustable object.
 boolean getValueIsAdjusting()
          Returns true if the value is in the process of changing as a result of actions being taken by the user.
 int getVisibleAmount()
          Gets the length of the proportional indicator.
 String paramString()
          Returns a string representing the state of this scrollbar.
 void removeAdjustmentListener(AdjustmentListener l)
          Removes the specified adjustment listener so that it no longer receives adjustment events from this ScrollPaneAdjustable.
 void setBlockIncrement(int b)
          Sets the block value increment for the adjustable object.
 void setMaximum(int max)
          This method should NOT be called by user code.
 void setMinimum(int min)
          This method should NOT be called by user code.
 void setUnitIncrement(int u)
          Sets the unit value increment for the adjustable object.
 void setValue(int v)
          Sets the value of this scrollbar to the specified value.
 void setValueIsAdjusting(boolean b)
          Sets the valueIsAdjusting property.
 void setVisibleAmount(int v)
          This method should NOT be called by user code.
 String toString()
          Returns a string representation of this scrollbar and its values.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Method Detail

getOrientation

public int getOrientation()
Returns the orientation of this scrollbar.

Specified by:
getOrientation in interface Adjustable
Returns:
the orientation of this scrollbar, either Adjustable.HORIZONTAL or Adjustable.VERTICAL

setMinimum

public void setMinimum(int min)
This method should NOT be called by user code. This method is public for this class to properly implement Adjustable interface.

Specified by:
setMinimum in interface Adjustable
Parameters:
min - the minimum value
Throws:
AWTError - Always throws an error when called.

getMinimum

public int getMinimum()
Description copied from interface: Adjustable
Gets the minimum value of the adjustable object.

Specified by:
getMinimum in interface Adjustable
Returns:
the minimum value of the adjustable object

setMaximum

public void setMaximum(int max)
This method should NOT be called by user code. This method is public for this class to properly implement Adjustable interface.

Specified by:
setMaximum in interface Adjustable
Parameters:
max - the maximum value
Throws:
AWTError - Always throws an error when called.

getMaximum

public int getMaximum()
Description copied from interface: Adjustable
Gets the maximum value of the adjustable object.

Specified by:
getMaximum in interface Adjustable
Returns:
the maximum value of the adjustable object

setUnitIncrement

public void setUnitIncrement(int u)
Description copied from interface: Adjustable
Sets the unit value increment for the adjustable object.

Specified by:
setUnitIncrement in interface Adjustable
Parameters:
u - the unit increment

getUnitIncrement

public int getUnitIncrement()
Description copied from interface: Adjustable
Gets the unit value increment for the adjustable object.

Specified by:
getUnitIncrement in interface Adjustable
Returns:
the unit value increment for the adjustable object

setBlockIncrement

public void setBlockIncrement(int b)
Description copied from interface: Adjustable
Sets the block value increment for the adjustable object.

Specified by:
setBlockIncrement in interface Adjustable
Parameters:
b - the block increment

getBlockIncrement

public int getBlockIncrement()
Description copied from interface: Adjustable
Gets the block value increment for the adjustable object.

Specified by:
getBlockIncrement in interface Adjustable
Returns:
the block value increment for the adjustable object

setVisibleAmount

public void setVisibleAmount(int v)
This method should NOT be called by user code. This method is public for this class to properly implement Adjustable interface.

Specified by:
setVisibleAmount in interface Adjustable
Parameters:
v - the length of the indicator
Throws:
AWTError - Always throws an error when called.

getVisibleAmount

public int getVisibleAmount()
Description copied from interface: Adjustable
Gets the length of the proportional indicator.

Specified by:
getVisibleAmount in interface Adjustable
Returns:
the length of the proportional indicator

setValueIsAdjusting

public void setValueIsAdjusting(boolean b)
Sets the valueIsAdjusting property.

Parameters:
b - new adjustment-in-progress status
Since:
1.4
See Also:
getValueIsAdjusting()

getValueIsAdjusting

public boolean getValueIsAdjusting()
Returns true if the value is in the process of changing as a result of actions being taken by the user.

Returns:
the value of the valueIsAdjusting property
See Also:
setValueIsAdjusting(boolean)

setValue

public void setValue(int v)
Sets the value of this scrollbar to the specified value.

If the value supplied is less than the current minimum or greater than the current maximum, then one of those values is substituted, as appropriate.

Specified by:
setValue in interface Adjustable
Parameters:
v - the new value of the scrollbar

getValue

public int getValue()
Description copied from interface: Adjustable
Gets the current value of the adjustable object.

Specified by:
getValue in interface Adjustable
Returns:
the current value of the adjustable object

addAdjustmentListener

public void addAdjustmentListener(AdjustmentListener l)
Adds the specified adjustment listener to receive adjustment events from this ScrollPaneAdjustable. If l is null, no exception is thrown and no action is performed.

Refer to AWT Threading Issues for details on AWT's threading model.

Specified by:
addAdjustmentListener in interface Adjustable
Parameters:
l - the adjustment listener.
See Also:
removeAdjustmentListener(java.awt.event.AdjustmentListener), getAdjustmentListeners(), AdjustmentListener, AdjustmentEvent

removeAdjustmentListener

public void removeAdjustmentListener(AdjustmentListener l)
Removes the specified adjustment listener so that it no longer receives adjustment events from this ScrollPaneAdjustable. If l is null, no exception is thrown and no action is performed.

Refer to AWT Threading Issues for details on AWT's threading model.

Specified by:
removeAdjustmentListener in interface Adjustable
Parameters:
l - the adjustment listener.
Since:
JDK1.1
See Also:
addAdjustmentListener(java.awt.event.AdjustmentListener), getAdjustmentListeners(), AdjustmentListener, AdjustmentEvent

getAdjustmentListeners

public AdjustmentListener[] getAdjustmentListeners()
Returns an array of all the adjustment listeners registered on this ScrollPaneAdjustable.

Returns:
all of this ScrollPaneAdjustable's AdjustmentListeners or an empty array if no adjustment listeners are currently registered
Since:
1.4
See Also:
addAdjustmentListener(java.awt.event.AdjustmentListener), removeAdjustmentListener(java.awt.event.AdjustmentListener), AdjustmentListener, AdjustmentEvent

toString

public String toString()
Returns a string representation of this scrollbar and its values.

Overrides:
toString in class Object
Returns:
a string representation of this scrollbar.

paramString

public String paramString()
Returns a string representing the state of this scrollbar. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Returns:
the parameter string of this scrollbar.

Java™ Platform
Standard Ed. 6

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