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.partialupdate;
31:
32: import nextapp.echo2.app.Border;
33: import nextapp.echo2.app.update.ServerComponentUpdate;
34: import nextapp.echo2.webcontainer.ContainerInstance;
35: import nextapp.echo2.webcontainer.PartialUpdateParticipant;
36: import nextapp.echo2.webcontainer.RenderContext;
37: import nextapp.echo2.webcontainer.propertyrender.BorderRender;
38: import nextapp.echo2.webrender.servermessage.DomUpdate;
39:
40: /**
41: * A <code>PartialUpdateParticipant</code> to update a CSS border
42: * property.
43: */
44: public class BorderUpdate implements PartialUpdateParticipant {
45:
46: public static final String CSS_BORDER = "border";
47:
48: private String componentPropertyName;
49: private String cssAttributeName;
50: private String idSuffix;
51:
52: /**
53: * Creates a new <code>BorderUpdate</code>.
54: *
55: * @param componentPropertyName the name of the property of the component
56: * @param idSuffix the suffix to append to the root client-side identifier
57: * of the component (should be null in typical case of no suffix)
58: * @param cssAttributeName the name of the CSS attribute to update (see
59: * CSS constants provided in this class)
60: */
61: public BorderUpdate(String componentPropertyName, String idSuffix,
62: String cssAttributeName) {
63: super ();
64: this .componentPropertyName = componentPropertyName;
65: this .idSuffix = idSuffix;
66: this .cssAttributeName = cssAttributeName;
67: }
68:
69: /**
70: * @see nextapp.echo2.webcontainer.PartialUpdateParticipant#canRenderProperty(nextapp.echo2.webcontainer.RenderContext,
71: * nextapp.echo2.app.update.ServerComponentUpdate)
72: */
73: public boolean canRenderProperty(RenderContext rc,
74: ServerComponentUpdate update) {
75: return true;
76: }
77:
78: /**
79: * @see nextapp.echo2.webcontainer.PartialUpdateParticipant#renderProperty(
80: * nextapp.echo2.webcontainer.RenderContext, nextapp.echo2.app.update.ServerComponentUpdate)
81: */
82: public void renderProperty(RenderContext rc,
83: ServerComponentUpdate update) {
84: Border border = (Border) update.getParent().getRenderProperty(
85: componentPropertyName);
86: String elementId = idSuffix == null ? ContainerInstance
87: .getElementId(update.getParent()) : ContainerInstance
88: .getElementId(update.getParent())
89: + idSuffix;
90: if (border == null) {
91: DomUpdate.renderStyleUpdate(rc.getServerMessage(),
92: elementId, cssAttributeName, "");
93: } else {
94: DomUpdate.renderStyleUpdate(rc.getServerMessage(),
95: elementId, cssAttributeName, BorderRender
96: .renderCssAttributeValue(border));
97: }
98: }
99: }
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