1 //----------------------------------------------------------------------
2 //
3 // PerfectJPattern: "Design patterns are good but components are better!"
4 // Example.java Copyright (c) 2009 Giovanni Azua Garcia
5 // bravegag@hotmail.com
6 //
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License
9 // as published by the Free Software Foundation; either version 3
10 // of the License, or (at your option) any later version.
11 //
12 // This program is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
16 //
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, see <http://www.gnu.org/licenses/>.
19 //
20 //----------------------------------------------------------------------
21 package org.perfectjpattern.core.structural.decorator;
22
23 /**
24 * Startup Main for the Decorator Pattern Example code
25 *
26 * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a>
27 * @version $Revision: 1.0 $Date: Apr 5, 2008 10:11:17 PM $
28 */
29 //CHECKSTYLE:OFF
30 public final
31 class Example
32 // CHECKSTYLE:ON
33 {
34 //------------------------------------------------------------------------
35 // public
36 //------------------------------------------------------------------------
37 public static void
38 main(String[] anArguments)
39 {
40 //---------------------------------------------------------------
41 // Create TextView decorated by Scroll and Border decorators
42 //---------------------------------------------------------------
43 IVisualComponent myTextView = new TextView();
44 ScrollDecorator myScrollableView = new ScrollDecorator(
45 new BorderDecorator(myTextView).getComponent());
46
47 //---------------------------------------------------------------
48 // get reference to the Decorator instance
49 //---------------------------------------------------------------
50 IScrollableComponent myScrollableDecorator = myScrollableView.
51 getComponent();
52
53 assert myScrollableDecorator.equals(myTextView) :
54 "Identity problems? I thought not!";
55
56 //---------------------------------------------------------------
57 // either call additional method ...
58 //---------------------------------------------------------------
59 myScrollableDecorator.scrollTo();
60
61 //---------------------------------------------------------------
62 // or call [optionally decorated] component methods
63 //---------------------------------------------------------------
64 myScrollableDecorator.draw();
65 myScrollableDecorator.focus();
66 myScrollableDecorator.hide();
67 }
68 }