KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > nextapp > echo2 > webcontainer > propertyrender > LayoutDirectionRender


1 /*
2  * This file is part of the Echo Web Application Framework (hereinafter "Echo").
3  * Copyright (C) 2002-2005 NextApp, Inc.
4  *
5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6  *
7  * The contents of this file are subject to the Mozilla Public License Version
8  * 1.1 (the "License"); you may not use this file except in compliance with
9  * 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.propertyrender;
31
32 import java.util.Locale JavaDoc;
33
34 import nextapp.echo2.app.LayoutDirection;
35 import nextapp.echo2.webrender.output.CssStyle;
36
37 /**
38  * Utility class for rendering
39  * <code>nextapp.echo2.app.LayoutDirection</code> properties.
40  */
41 public class LayoutDirectionRender {
42
43     /**
44      * Renders a CSS attribute value representation of a
45      * <code>LayoutDirection</code>.
46      *
47      * @param layoutDirection the <code>LayoutDirection</code> to render
48      * @return a CSS attribute value representation
49      */
50     public static String JavaDoc renderCssAttributeValue(LayoutDirection layoutDirection) {
51         return layoutDirection.isLeftToRight() ? "ltr" : "rtl";
52     }
53     
54     /**
55      * Renders the layout direction of a component to the given CSS style,
56      * based on the provided <code>LayoutDirection</code> and
57      * <code>Locale</code> property values. Null property values are ignored.
58      * <p>
59      * The provided <code>locale</code> and <code>layoutDirection</code>
60      * properties should represent the specific settings of a single
61      * <code>Component</code>, NOT those derived recursively from within its
62      * hierarchy. Using the recursively retrieved versions will result in
63      * direction information being rendered in cases where it is unnecessary.
64      *
65      * @param cssStyle the target <code>CssStyle</code>
66      * @param layoutDirection the <code>LayoutDirection</code>
67      * @param locale the <code>Locale</code>
68      */
69     public static void renderToStyle(CssStyle cssStyle, LayoutDirection layoutDirection, Locale JavaDoc locale) {
70         if (layoutDirection == null) {
71             if (locale == null) {
72                 return;
73             }
74             layoutDirection = LayoutDirection.forLocale(locale);
75         }
76         cssStyle.setAttribute("direction", renderCssAttributeValue(layoutDirection));
77     }
78     
79     /** Non-instantiable class. */
80     private LayoutDirectionRender() { }
81 }
82
Popular Tags