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;
31:
32: import nextapp.echo2.app.Command;
33:
34: /**
35: * A stateless peer object used to render the given type of
36: * <code>nextapp.echo2.app.Command</code> to the client.
37: * <p>
38: * A <strong>single</strong> instance of a given
39: * <code>CommandSynchronizePeer</code> will be created to synchronize the state
40: * of <strong>ALL</strong> instances of a particular class of
41: * <code>Command</code>. Thus, it is not possible to
42: * store information about a command's state in this object.
43: */
44: public interface CommandSynchronizePeer {
45:
46: /**
47: * Renders a directive to execute the command on the client.
48: *
49: * @param rc the relevant <code>RenderContext</code>
50: * @param command the <code>Command</code> to execute
51: */
52: public void render(RenderContext rc, Command command);
53: }
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