01: /*
02: * This file is part of the Echo Web Application Framework (hereinafter "Echo").
03: * Copyright (C) 2002-2005 NextApp, Inc.
04: *
05: * Version: MPL 1.1/GPL 2.0/LGPL 2.1
06: *
07: * The contents of this file are subject to the Mozilla Public License Version
08: * 1.1 (the "License"); you may not use this file except in compliance with
09: * the License. You may obtain a copy of the License at
10: * http://www.mozilla.org/MPL/
11: *
12: * Software distributed under the License is distributed on an "AS IS" basis,
13: * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14: * for the specific language governing rights and limitations under the
15: * License.
16: *
17: * Alternatively, the contents of this file may be used under the terms of
18: * either the GNU General Public License Version 2 or later (the "GPL"), or
19: * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20: * in which case the provisions of the GPL or the LGPL are applicable instead
21: * of those above. If you wish to allow use of your version of this file only
22: * under the terms of either the GPL or the LGPL, and not to allow others to
23: * use your version of this file under the terms of the MPL, indicate your
24: * decision by deleting the provisions above and replace them with the notice
25: * and other provisions required by the GPL or the LGPL. If you do not delete
26: * the provisions above, a recipient may use your version of this file under
27: * the terms of any one of the MPL, the GPL or the LGPL.
28: */
29:
30: package nextapp.echo2.webcontainer.image;
31:
32: import nextapp.echo2.app.AwtImageReference;
33: import nextapp.echo2.app.Component;
34: import nextapp.echo2.app.HttpImageReference;
35: import nextapp.echo2.app.ImageReference;
36: import nextapp.echo2.app.StreamImageReference;
37: import nextapp.echo2.webcontainer.RenderContext;
38:
39: /**
40: * Main application interface to application container image rendering API.
41: */
42: public class ImageTools {
43:
44: /**
45: * Retrieves the URI to render an image for a component.
46: *
47: * @param rc the relevant <code>RenderContext</code>
48: * @param irs the <code>ImageRenderSupport</code>-implementing
49: * <code>ComponentSynchronizePeer</code>.
50: * @param component the component for which the image is being rendered
51: * @param imageId the component-specific id of the image
52: * @return the URI
53: */
54: public static String getUri(RenderContext rc,
55: ImageRenderSupport irs, Component component, String imageId) {
56: ImageReference imageReference = irs
57: .getImage(component, imageId);
58: if (imageReference instanceof StreamImageReference) {
59: rc.getContainerInstance().getIdTable().register(
60: imageReference);
61: return StreamImageService.INSTANCE.createUri(rc
62: .getContainerInstance(), imageReference
63: .getRenderId());
64: } else if (imageReference instanceof HttpImageReference) {
65: return ((HttpImageReference) imageReference).getUri();
66: } else if (imageReference instanceof AwtImageReference) {
67: rc.getContainerInstance().getIdTable().register(
68: imageReference);
69: return AwtImageService.INSTANCE.createUri(rc
70: .getContainerInstance(), imageReference
71: .getRenderId());
72: } else {
73: throw new IllegalArgumentException(
74: "Unsupported image type.");
75: }
76: }
77: }
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