01: /**
02: * ===========================================
03: * JFreeReport : a free Java reporting library
04: * ===========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either 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, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * URLImageContainer.java
27: * ------------
28: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
29: */package org.jfree.report;
30:
31: import java.net.URL;
32:
33: /**
34: * An image container, that references a remote image. The image is not
35: * required to be loadable as long as this container returns all necessary
36: * information correctly.
37: * <p>
38: * Some output targets will not display anything, if the image is not loadable.
39: *
40: * @author Thomas Morgner
41: */
42: public interface URLImageContainer extends ImageContainer {
43: /**
44: * Returns the source URL, if available.
45: *
46: * @return the source URL of the image.
47: */
48: public URL getSourceURL();
49:
50: /**
51: * Returns the source URL as string. This could also be a relative URL
52: * which is not readable by the report processor, the source URL string
53: * is copied as is - without being interpreted by the output target.
54: *
55: * @return the source URL as string.
56: */
57: public String getSourceURLString();
58:
59: /**
60: * Defines, whether the given URLs are readable. If there is no java.net.URL
61: * sourceURL, then this method must return false.
62: *
63: * @return true, if the source URL is loadable, false otherwise.
64: */
65: public boolean isLoadable();
66: }
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