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package org.havi.ui.event;

/*
 * Copyright 2000-2003 by HAVi, Inc. Java is a trademark of Sun
 * Microsystems, Inc. All rights reserved.  
 */


import java.awt.AWTEvent;
import org.havi.ui.HAdjustmentValue;

/**
   An {@link org.havi.ui.event.HAdjustmentEvent HAdjustmentEvent} event is used to
   interact with a component implementing the {@link
   org.havi.ui.HAdjustmentValue HAdjustmentValue} interface as follows:

   


    An {@link org.havi.ui.event.HAdjustmentEvent HAdjustmentEvent} event may be sent
   from the HAVi system to the component to cause a change to the
   value or editable mode of the component as a result of user
   interaction. For example, this event may be generated by a virtual
   keyboard user interface on a platform which lacks suitable
   adjustment keys.

   
 An {@link org.havi.ui.event.HAdjustmentEvent HAdjustmentEvent} event is sent from
   the component to all registered {@link
   org.havi.ui.event.HAdjustmentListener HAdjustmentListeners} when a
   change to the value or editable mode of the component occurs.
   
   


   All interoperable HAVi components which expect to receive {@link
   org.havi.ui.event.HAdjustmentEvent HAdjustmentEvent} events should also implement the
   {@link org.havi.ui.HAdjustmentInputPreferred
   HAdjustmentInputPreferred} interface.

  

  The parameters to the constructors are as follows, in cases where
  parameters are not used, then the constructor should use the default
  values.
  
  
Default parameter values exposed in the constructors
  
  Parameter Description Default value 
  Set method Get method
  None.
  
  Default parameter values not exposed in the constructors
  
  Description Default value Set method
  Get method
  None.
  

*/

public class HAdjustmentEvent 
    extends java.awt.AWTEvent
{

    /**
     * The first integer id in the range of event ids supported by
     * the {@link org.havi.ui.event.HAdjustmentEvent
     * HAdjustmentEvent} class.  
     */
    public static final int ADJUST_FIRST = RESERVED_ID_MAX + 1;
    
    /**
     * The last integer id in the range of event ids supported by
     * the {@link org.havi.ui.event.HAdjustmentEvent
     * HAdjustmentEvent} class.  
     */
    public static final int ADJUST_LAST = ADJUST_FIRST + 5;
    
    /**
     * An adjustment event with this id indicates that the value of an
     * {@link org.havi.ui.HAdjustmentValue HAdjustmentValue} component
     * may be about to change. This event is sent when the user causes
     * the component to enter its editable mode. Note that it is a
     * platform specific implementation option for such components to
     * enter editable mode automatically e.g. when they receive input
     * focus. In such a case the order in which the {@link
     * org.havi.ui.event.HFocusEvent HFocusEvent} and {@link
     * org.havi.ui.event.HAdjustmentEvent HAdjustmentEvent} are sent
     * is platform specific.
     * 
     * @see HAdjustmentValue#getAdjustMode 
     */
    public static final int ADJUST_START_CHANGE = ADJUST_FIRST;

    /**
     * An adjustment event with this id is sent whenever the
     * value of an {@link org.havi.ui.HAdjustmentValue
     * HAdjustmentValue} component is decreased by one unit.
     * 
     * @see HAdjustmentValue#setUnitIncrement
     * @see HAdjustmentValue#getUnitIncrement
     */
    public static final int ADJUST_LESS = ADJUST_FIRST + 1;

    /**
     * An adjustment event with this id is sent whenever the
     * value of an {@link org.havi.ui.HAdjustmentValue
     * HAdjustmentValue} component is increased by one unit.
     * 
     * @see HAdjustmentValue#setUnitIncrement
     * @see HAdjustmentValue#getUnitIncrement
     */
    public static final int ADJUST_MORE = ADJUST_FIRST + 2;
    
    /**
     * An adjustment event with this id is sent whenever the
     * value of an {@link org.havi.ui.HAdjustmentValue
     * HAdjustmentValue} component is decreased by one block.
     * 
     * @see HAdjustmentValue#setBlockIncrement
     * @see HAdjustmentValue#getBlockIncrement
     */
    public static final int ADJUST_PAGE_LESS = ADJUST_FIRST + 3;

    /**
     * An adjustment change event with this id is sent whenever the
     * value of an {@link org.havi.ui.HAdjustmentValue
     * HAdjustmentValue} component is increased by one block.
     * 
     * @see HAdjustmentValue#setBlockIncrement
     * @see HAdjustmentValue#getBlockIncrement
     */
    public static final int ADJUST_PAGE_MORE = ADJUST_FIRST + 4;
    
    /**
     * An adjustment event with this id indicates that the value of an
     * {@link org.havi.ui.HAdjustmentValue HAdjustmentValue} component
     * has been finally set. This event is sent when the user causes
     * the component to leave its editable mode. Note that it is a
     * platform specific implementation option for such components to
     * leave editable mode automatically e.g. when they lose input
     * focus. In such a case the order in which the {@link
     * org.havi.ui.event.HFocusEvent HFocusEvent} and {@link
     * org.havi.ui.event.HAdjustmentEvent HAdjustmentEvent} are sent
     * is platform specific.
     * 
     * @see HAdjustmentValue#getAdjustMode 
     */
    public static final int ADJUST_END_CHANGE = ADJUST_FIRST + 5;

    /**
     * Constructs an {@link org.havi.ui.event.HAdjustmentEvent
     * HAdjustmentEvent}.
     * 
     * @param source The {@link org.havi.ui.HAdjustmentInputPreferred 
     * HAdjustmentInputPreferred} component whose value has been modified.
     * @param id The event id of the {@link
     * org.havi.ui.event.HAdjustmentEvent HAdjustmentEvent} generated
     * by the 
     * {@link org.havi.ui.HAdjustmentInputPreferred HAdjustmentInputPreferred}
     * component. This is the value that will be returned by the
     * event object's getID method.  
     */
    public HAdjustmentEvent(org.havi.ui.HAdjustmentInputPreferred source, int id)
    {
	super(source, id);
    }

}