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Java > Open Source Codes > org > apache > myfaces > config > MyfacesConfig


1 package org.apache.myfaces.config;
2
3 /**
4  * @author Manfred Geiler (latest modification by $Author: matze $)
5  * @version $Revision: 1.2 $ $Date: 2004/10/13 11:51:01 $
6  */
7
8 import org.apache.commons.logging.Log;
9 import org.apache.commons.logging.LogFactory;
10
11 import javax.faces.context.ExternalContext;
12
13 /**
14  * Holds all configuration init parameters (from web.xml) that are independent
15  * from the core implementation. The parameters in this class are available to
16  * all shared, component and implementation classes.
17  * See RuntimeConfig for configuration infos that come from the faces-config
18  * files and are needed by the core implementation.
19  */
20 public class MyfacesConfig
21 {
22     private static final Log log = LogFactory.getLog(MyfacesConfig.class);
23
24     private static final String JavaDoc APPLICATION_MAP_PARAM_NAME = MyfacesConfig.class.getName();
25
26     private static final String JavaDoc INIT_PARAM_PRETTY_HTML = "org.apache.myfaces.PRETTY_HTML";
27     private static final boolean INIT_PARAM_PRETTY_HTML_DEFAULT = true;
28
29     private static final String JavaDoc INIT_PARAM_ALLOW_JAVASCRIPT = "org.apache.myfaces.ALLOW_JAVASCRIPT";
30     private static final boolean INIT_PARAM_ALLOW_JAVASCRIPT_DEFAULT = true;
31
32     private static final String JavaDoc INIT_PARAM_DETECT_JAVASCRIPT = "org.apache.myfaces.DETECT_JAVASCRIPT";
33     private static final boolean INIT_PARAM_DETECT_JAVASCRIPT_DEFAULT = false;
34
35     private static final String JavaDoc INIT_PARAM_AUTO_SCROLL = "org.apache.myfaces.AUTO_SCROLL";
36     private static final boolean INIT_PARAM_AUTO_SCROLL_DEFAULT = false;
37
38     private boolean _prettyHtml;
39     private boolean _detectJavascript;
40     private boolean _allowJavascript;
41     private boolean _autoScroll;
42
43     public static MyfacesConfig getCurrentInstance(ExternalContext extCtx)
44     {
45         MyfacesConfig myfacesConfig = (MyfacesConfig)extCtx
46                                         .getApplicationMap().get(APPLICATION_MAP_PARAM_NAME);
47         if (myfacesConfig != null) return myfacesConfig;
48
49         myfacesConfig = new MyfacesConfig();
50         extCtx.getApplicationMap().put(APPLICATION_MAP_PARAM_NAME, myfacesConfig);
51
52         myfacesConfig.setPrettyHtml(getBooleanInitParameter(extCtx, INIT_PARAM_PRETTY_HTML,
53                                                                     INIT_PARAM_PRETTY_HTML_DEFAULT));
54         myfacesConfig.setAllowJavascript(getBooleanInitParameter(extCtx, INIT_PARAM_ALLOW_JAVASCRIPT,
55                                                                          INIT_PARAM_ALLOW_JAVASCRIPT_DEFAULT));
56         myfacesConfig.setDetectJavascript(getBooleanInitParameter(extCtx, INIT_PARAM_DETECT_JAVASCRIPT,
57                                                                           INIT_PARAM_DETECT_JAVASCRIPT_DEFAULT));
58         myfacesConfig.setAutoScroll(getBooleanInitParameter(extCtx, INIT_PARAM_AUTO_SCROLL,
59                                                                     INIT_PARAM_AUTO_SCROLL_DEFAULT));
60         return myfacesConfig;
61     }
62
63     private static boolean getBooleanInitParameter(ExternalContext externalContext,
64                                                    String JavaDoc paramName,
65                                                    boolean defaultValue)
66     {
67         String JavaDoc strValue = externalContext.getInitParameter(paramName);
68         if (strValue == null)
69         {
70             if (log.isInfoEnabled()) log.info("No context init parameter '" + paramName + "' found, using default value " + defaultValue);
71             return defaultValue;
72         }
73         else if (strValue.equalsIgnoreCase("true") || strValue.equalsIgnoreCase("on") || strValue.equalsIgnoreCase("yes"))
74         {
75             return true;
76         }
77         else if (strValue.equalsIgnoreCase("false") || strValue.equalsIgnoreCase("off") || strValue.equalsIgnoreCase("no"))
78         {
79             return false;
80         }
81         else
82         {
83             if (log.isWarnEnabled()) log.warn("Wrong context init parameter '" + paramName + "' (='" + strValue + "'), using default value " + defaultValue);
84             return defaultValue;
85         }
86     }
87
88     public boolean isPrettyHtml()
89     {
90         return _prettyHtml;
91     }
92
93     public void setPrettyHtml(boolean prettyHtml)
94     {
95         _prettyHtml = prettyHtml;
96     }
97
98     public boolean isDetectJavascript()
99     {
100         return _detectJavascript;
101     }
102
103     public void setDetectJavascript(boolean detectJavascript)
104     {
105         _detectJavascript = detectJavascript;
106     }
107
108     /**
109      * Do not use this in renderers directly!
110      * You should use {@link org.apache.myfaces.renderkit.html.util.JavascriptUtils#isJavascriptAllowed}
111      * to determine if javascript is allowed or not.
112      */
113     public boolean isAllowJavascript()
114     {
115         return _allowJavascript;
116     }
117
118     public void setAllowJavascript(boolean allowJavascript)
119     {
120         _allowJavascript = allowJavascript;
121     }
122
123     public boolean isAutoScroll()
124     {
125         return _autoScroll;
126     }
127
128     public void setAutoScroll(boolean autoScroll)
129     {
130         _autoScroll = autoScroll;
131     }
132 }
133
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