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/*
* Copyright 1996 Jan Newmarch, University of Canberra.
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The author
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
package awtCommand;
import java.awt.*;
public class CList extends List {
protected Command selectCommand = null;
protected Command deselectCommand = null;
protected Command actionCommand = null;
/**
* Handles the event
*/
public boolean handleEvent(Event evt) {
switch (evt.id) {
case Event.LIST_SELECT:
return select(evt, evt.arg);
case Event.LIST_DESELECT:
return deselect(evt, evt.arg);
default:
return super.handleEvent(evt);
}
}
/*
* event handling methods
*/
/**
* Called if the Enter key is pressed.
* This results in a call to the actionCommand object
* with <code>what</code> set to the selected item.
*/
public boolean action(Event evt, Object what) {
if (actionCommand != null)
actionCommand.execute(this, evt, what);
return false;
}
/**
* Called if the mouse selects an item.
* This results in a call to the selectCommand object
* with <code>what</code> set to the selected index.
*/
public boolean select(Event evt, Object what) {
if (selectCommand != null)
selectCommand.execute(this, evt, what);
return false;
}
/**
* Called if the mouse deselects an item.
* This results in a call to the deselectCommand object
* with <code>what</code> set to the deselected index.
*/
public boolean deselect(Event evt, Object what) {
if (deselectCommand != null)
deselectCommand.execute(this, evt, what);
return false;
}
/**
* Sets the actionCommand.
*/
public void setActionCommand(Command action) {
actionCommand = action;
}
/**
* Sets the selectCommand.
*/
public void setSelectCommand(Command select) {
selectCommand = select;
}
/**
* Sets the deselectCommand.
*/
public void setDeselectCommand(Command deselect) {
deselectCommand = deselect;
}
}
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