01: // ============================================================================
02: // $Id: GenericAction.java,v 1.4 2005/08/02 23:45:21 davidahall Exp $
03: // Copyright (c) 2004-2005 David A. Hall
04: // ============================================================================
05: // The contents of this file are subject to the Common Development and
06: // Distribution License (CDDL), Version 1.0 (the License); you may not use this
07: // file except in compliance with the License. You should have received a copy
08: // of the the License along with this file: if not, a copy of the License is
09: // available from Sun Microsystems, Inc.
10: //
11: // http://www.sun.com/cddl/cddl.html
12: //
13: // From time to time, the license steward (initially Sun Microsystems, Inc.) may
14: // publish revised and/or new versions of the License. You may not use,
15: // distribute, or otherwise make this file available under subsequent versions
16: // of the License.
17: //
18: // Alternatively, the contents of this file may be used under the terms of the
19: // GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which
20: // case the provisions of the LGPL are applicable instead of those above. If you
21: // wish to allow use of your version of this file only under the terms of the
22: // LGPL, and not to allow others to use your version of this file under the
23: // terms of the CDDL, indicate your decision by deleting the provisions above
24: // and replace them with the notice and other provisions required by the LGPL.
25: // If you do not delete the provisions above, a recipient may use your version
26: // of this file under the terms of either the CDDL or the LGPL.
27: //
28: // This library is distributed in the hope that it will be useful,
29: // but WITHOUT ANY WARRANTY; without even the implied warranty of
30: // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
31: // ============================================================================
32:
33: package net.sf.jga.swing;
34:
35: import java.awt.event.ActionEvent;
36: import javax.swing.AbstractAction;
37: import javax.swing.Icon;
38: import net.sf.jga.fn.UnaryFunctor;
39: import net.sf.jga.fn.adaptor.Identity;
40:
41: /**
42: * Action that invokes a functor given at construction.
43: * <p>
44: * Copyright © 2004-2005 David A. Hall
45: * @author <a href="mailto:davidahall@users.sf.net">David A. Hall</a>
46: */
47:
48: public class GenericAction extends AbstractAction {
49:
50: static final long serialVersionUID = 7439713855391597694L;
51:
52: // The functor to execute
53: private UnaryFunctor<ActionEvent, ?> _fn;
54:
55: /**
56: * Builds a GenericAction with the default label and no icon.
57: */
58: public GenericAction(UnaryFunctor<ActionEvent, ?> fn) {
59: super ();
60: setFunctor(fn);
61: }
62:
63: /**
64: * Builds a GenericAction with the given label and no icon.
65: */
66: public GenericAction(UnaryFunctor<ActionEvent, ?> fn, String name) {
67: super (name);
68: setFunctor(fn);
69: }
70:
71: /**
72: * Builds a GenericAction with the given label and no icon.
73: */
74: public GenericAction(UnaryFunctor<ActionEvent, ?> fn, String name,
75: Icon icon) {
76: super (name, icon);
77: setFunctor(fn);
78: }
79:
80: /**
81: * Sets the functor: if null, uses a rational default functor, otherwise uses
82: * the given functor.
83: */
84: private final void setFunctor(UnaryFunctor<ActionEvent, ?> fn) {
85: if (fn == null)
86: _fn = new Identity<ActionEvent>();
87: else
88: _fn = fn;
89: }
90:
91: /**
92: * Passes the action event to the functor given at construction. The
93: * result of the functor, if any, is discareded.
94: */
95: public void actionPerformed(ActionEvent e) {
96: _fn.fn(e);
97: }
98: }
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