01: /*
02: * ============================================================================
03: * GNU Lesser General Public License
04: * ============================================================================
05: *
06: * JasperReports - Free Java report-generating library.
07: * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
08: *
09: * This library is free software; you can redistribute it and/or
10: * modify it under the terms of the GNU Lesser General Public
11: * License as published by the Free Software Foundation; either
12: * version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17: * Lesser General Public License for more details.
18: *
19: * You should have received a copy of the GNU Lesser General Public
20: * License along with this library; if not, write to the Free Software
21: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22: *
23: * JasperSoft Corporation
24: * 303 Second Street, Suite 450 North
25: * San Francisco, CA 94107
26: * http://www.jaspersoft.com
27: */
28: package net.sf.jasperreports.engine.export;
29:
30: import net.sf.jasperreports.engine.JRPrintHyperlink;
31:
32: /**
33: * An abstract factory of {@link JRHyperlinkProducer hyperlink producers}.
34: * <p>
35: * The factory is responsible for returning a hyperlink producer for a
36: * custom hyperlink type.
37: * </p>
38: *
39: * @author Lucian Chirita (lucianc@users.sourceforge.net)
40: * @version $Id: JRHyperlinkProducerFactory.java 1364 2006-08-31 15:13:20Z lucianc $
41: */
42: public abstract class JRHyperlinkProducerFactory {
43:
44: /**
45: * Returns the hyperlink producer associated with a specific hyperlink type.
46: *
47: * @param linkType the hyperlink type
48: * @return an associated hyperlink producer, or <code>null</code> when none associated
49: */
50: public abstract JRHyperlinkProducer getHandler(String linkType);
51:
52: /**
53: * Generates the String hyperlink for a hyperlink instance based on its
54: * type and on the associated hyperlink producer.
55: *
56: * @param hyperlink the hyperlink instance
57: * @return the genereated String hyperlink
58: * @see JRHyperlinkProducer#getHyperlink(JRPrintHyperlink)
59: */
60: public String produceHyperlink(JRPrintHyperlink hyperlink) {
61: String linkType = hyperlink.getLinkType();
62: String href = null;
63: if (linkType != null) {
64: JRHyperlinkProducer producer = getHandler(linkType);
65: if (producer != null) {
66: href = producer.getHyperlink(hyperlink);
67: }
68: }
69: return href;
70: }
71:
72: }
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