001: /*
002: *
003: *
004: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006: *
007: * This program is free software; you can redistribute it and/or
008: * modify it under the terms of the GNU General Public License version
009: * 2 only, as published by the Free Software Foundation.
010: *
011: * This program is distributed in the hope that it will be useful, but
012: * WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014: * General Public License version 2 for more details (a copy is
015: * included at /legal/license.txt).
016: *
017: * You should have received a copy of the GNU General Public License
018: * version 2 along with this work; if not, write to the Free Software
019: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020: * 02110-1301 USA
021: *
022: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023: * Clara, CA 95054 or visit www.sun.com if you need additional
024: * information or have any questions.
025: */
026:
027: package com.sun.perseus.model;
028:
029: /**
030: * <code>ConditionalProcessing</code> is a helper class which handles the
031: * conditional processing decisions for Perseus classes.
032: *
033: * @version $Id: ConditionalProcessing.java,v 1.3 2006/06/29 10:47:30 ln156897 Exp $
034: */
035: public final class ConditionalProcessing {
036: /**
037: * Required Features for SVG Tiny
038: */
039: public static final String[] SUPPORTED_FEATURES = {
040: "http://www.w3.org/TR/SVG11/feature#CoreAttribute",
041: "http://www.w3.org/TR/SVG11/feature#BasicStructure",
042: "http://www.w3.org/TR/SVG11/feature#BasicPaintAttribute",
043: "http://www.w3.org/TR/SVG11/feature#BasicGraphicsAttribute",
044: "http://www.w3.org/TR/SVG11/feature#Hyperlinking",
045: "http://www.w3.org/TR/SVG11/feature#XlinkAttribute",
046: "http://www.w3.org/TR/SVG11/feature#ConditionalProcessing",
047: "http://www.w3.org/TR/SVG11/feature#Shape",
048: "http://www.w3.org/TR/SVG11/feature#Image",
049: "http://www.w3.org/TR/SVG11/feature#BasicText",
050: "http://www.w3.org/TR/SVG11/feature#BasicFont",
051: "http://www.w3.org/TR/SVGMobile/Tiny/feature#base",
052: /*
053: "http://www.w3.org/TR/SVG11/feature#Animation",
054: "http://www.w3.org/TR/SVG11/feature#Extensibility",
055: */
056: "http://www.w3.org/TR/SVGMobile/Tiny/feature#interactivity",
057: /*
058: "http://www.w3.org/TR/SVGMobile/Tiny/feature#all"
059: */
060: };
061:
062: /**
063: * The user language
064: * <!> IMPL NOTE : Make this configurable, at least at Perseus
065: * load time.
066: */
067: public static final String USER_LANGUAGE = "en";
068:
069: /**
070: * Disallow instanciation
071: */
072: private ConditionalProcessing() {
073: }
074:
075: /**
076: * The list of supported features:
077: * http://www.w3.org/TR/SVG11/feature#CoreAttribute
078: * http://www.w3.org/TR/SVG11/feature#BasicStructure
079: * http://www.w3.org/TR/SVG11/feature#BasicPaintAttribute
080: * http://www.w3.org/TR/SVG11/feature#BasicGraphicsAttribute
081: * http://www.w3.org/TR/SVG11/feature#XlinkAttribute
082: * http://www.w3.org/TR/SVG11/feature#ConditionalProcessing
083: * http://www.w3.org/TR/SVG11/feature#Shape
084: * http://www.w3.org/TR/SVG11/feature#Image
085: * http://www.w3.org/TR/SVG11/feature#BasicText
086: * http://www.w3.org/TR/SVG11/feature#BasicFont
087: * http://www.w3.org/TR/SVGMobile/Tiny/feature#base
088: *
089: * The list of unsupported features:
090: * http://www.w3.org/TR/SVG11/feature#Hyperlinking
091: * http://www.w3.org/TR/SVG11/feature#Animation
092: * http://www.w3.org/TR/SVG11/feature#Extensibility
093: * http://www.w3.org/TR/SVGMobile/Tiny/feature#interactivity
094: * http://www.w3.org/TR/SVGMobile/Tiny/feature#all
095: *
096: * @param requiredFeatures the set of features to check
097: * @return true if all the features in the input array are supported.
098: */
099: public static boolean checkFeatures(final String[] requiredFeatures) {
100: for (int i = 0; i < requiredFeatures.length; i++) {
101: // Check that the feature is supported
102: if (!isFeatureSupported(requiredFeatures[i])) {
103: return false;
104: }
105: }
106: return true;
107: }
108:
109: /**
110: * @param requiredFeature the feature to check
111: * @return true if the input feature is supported, i.e. if it is one
112: * of the supported features
113: * @see #SUPPORTED_FEATURES
114: */
115: public static boolean isFeatureSupported(
116: final String requiredFeature) {
117: for (int i = 0; i < SUPPORTED_FEATURES.length; i++) {
118: if (requiredFeature == SUPPORTED_FEATURES[i]) {
119: return true;
120: }
121: }
122: return false;
123: }
124:
125: /**
126: * There are currently no supported extensions in Perseus
127: *
128: * @param requiredExtensions the array of required extensions to test
129: * @return false
130: */
131: public static boolean checkExtensions(
132: final String[] requiredExtensions) {
133: return false;
134: }
135:
136: /**
137: * The user language preference is controlled by this class
138: *
139: * @param systemLanguage the set of languages to check
140: * @return true if the user language matches one of the systemLanguage
141: * item.s
142: */
143: public static boolean checkLanguage(final String[] systemLanguage) {
144: for (int i = 0; i < systemLanguage.length; i++) {
145: if (USER_LANGUAGE == systemLanguage[i]) {
146: return true;
147: }
148: }
149: return false;
150: }
151: }
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