/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.myfaces.shared.config;
  
  import java.util.logging.Logger;
  
  import javax.faces.context.ExternalContext;
  import javax.servlet.ServletContext;
  
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFWebConfigParam;
  import org.apache.myfaces.shared.util.ClassUtils;
  import org.apache.myfaces.shared.util.WebConfigParamUtils;
  
  /**
   * Holds all configuration init parameters (from web.xml) that are independent
   * from the core implementation. The parameters in this class are available to
   * all shared, component and implementation classes.
   * See RuntimeConfig for configuration infos that come from the faces-config
   * files and are needed by the core implementation.
   *
   * MyfacesConfig is meant for components that implement some of the extended features
   * of MyFaces. Anyhow, using the MyFaces JSF implementation is no precondition for using
   * MyfacesConfig in custom components. Upon using another JSF implementation
   * (or omitting the extended init parameters) all config properties will simply have
   * their default values.
   *
   * @author Manfred Geiler (latest modification by $Author: lu4242 $)
   * @version $Revision: 1357499 $ $Date: 2012-07-05 03:55:28 -0500 (Thu, 05 Jul 2012) $
   */
  public class MyfacesConfig
  {
      //private static final Log log = LogFactory.getLog(MyfacesConfig.class);
      private static final Logger log = Logger.getLogger(MyfacesConfig.class.getName());
  
      private static final String APPLICATION_MAP_PARAM_NAME = MyfacesConfig.class.getName();
  
      /**
       * Set the virtual path used to serve resources using tomahawk addResource API. Note ExtensionsFilter should
       * be able to receive request on the prefix used here.
       */
      @JSFWebConfigParam(tags="tomahawk")
      public static final String  INIT_PARAM_RESOURCE_VIRTUAL_PATH = "org.apache.myfaces.RESOURCE_VIRTUAL_PATH";
      public static final String  INIT_PARAM_RESOURCE_VIRTUAL_PATH_DEFAULT = "/faces/myFacesExtensionResource";
  
      /**
       * If true, rendered HTML code will be formatted, so that it is "human readable".
       * i.e. additional line separators and whitespace will be written, that do not
       * influence the HTML code. Default: "true"
       */
      @JSFWebConfigParam(defaultValue="true", expectedValues="true, false, on, off, yes, no",since="1.1",
              ignoreUpperLowerCase=true, group="render")
      private static final String  INIT_PARAM_PRETTY_HTML = "org.apache.myfaces.PRETTY_HTML";
      private static final boolean INIT_PARAM_PRETTY_HTML_DEFAULT = true;
  
      /**
       * This parameter tells MyFaces if javascript code should be allowed in the rendered HTML output.
       * If javascript is allowed, command_link anchors will have javascript code 
       * that submits the corresponding form.
       * If javascript is not allowed, the state saving info and nested parameters ill be 
       * added as url parameters.
       * Default: "true"
       */
      @JSFWebConfigParam(defaultValue="true", expectedValues="true, false, on, off, yes, no",since="1.1",
              ignoreUpperLowerCase=true, group="render")
      private static final String  INIT_PARAM_ALLOW_JAVASCRIPT = "org.apache.myfaces.ALLOW_JAVASCRIPT";
      private static final boolean INIT_PARAM_ALLOW_JAVASCRIPT_DEFAULT = true;
  
      /**
       * Deprecated: tomahawk specific param to detect javascript, but it is no longer valid anymore.
       */
      @JSFWebConfigParam(defaultValue="false", expectedValues="true, false, on, off, yes, no",since="1.1",
              ignoreUpperLowerCase=true, deprecated=true, tags="tomahawk", group="render")
      private static final String  INIT_PARAM_DETECT_JAVASCRIPT = "org.apache.myfaces.DETECT_JAVASCRIPT";
      private static final boolean INIT_PARAM_DETECT_JAVASCRIPT_DEFAULT = false;
  
      /**
       * If true, a javascript function will be rendered that is able to restore the 
       * former vertical scroll on every request. Convenient feature if you have pages
       * with long lists and you do not want the browser page to always jump to the top
       * if you trigger a link or button action that stays on the same page.
       * Default: "false"
       */
      @JSFWebConfigParam(defaultValue="false", expectedValues="true, false, on, off, yes, no",since="1.1", 
             ignoreUpperLowerCase=true, tags="tomahawk")
     private static final String  INIT_PARAM_AUTO_SCROLL = "org.apache.myfaces.AUTO_SCROLL";
     private static final boolean INIT_PARAM_AUTO_SCROLL_DEFAULT = false;
 
     /**
      * Tomahawk specific: A class implementing the
      * org.apache.myfaces.shared.renderkit.html.util.AddResource
      * interface. It is responsible to
      * place scripts and css on the right position in your HTML document.
      * Default: "org.apache.myfaces.shared.renderkit.html.util.DefaultAddResource"
      * Follow the description on the MyFaces-Wiki-Performance page to enable
      * StreamingAddResource instead of DefaultAddResource if you want to
      * gain performance.
      */
     @JSFWebConfigParam(defaultValue="org.apache.myfaces. renderkit.html.util. DefaultAddResource",since="1.1",
             desc="Tomahawk specific: Indicate the class responsible to place scripts and css using " +
                  "tomahawk AddResource API", tags="tomahawk")
     private static final String INIT_PARAM_ADD_RESOURCE_CLASS = "org.apache.myfaces.ADD_RESOURCE_CLASS";
     private static final String INIT_PARAM_ADD_RESOURCE_CLASS_DEFAULT = 
         "org.apache.myfaces.renderkit.html.util.DefaultAddResource";
 
     /**
      * Tomahawk specific: A very common problem in configuring MyFaces-web-applications
      * is that the Extensions-Filter is not configured at all
      * or improperly configured. This parameter will check for a properly
      * configured Extensions-Filter if it is needed by the web-app.
      * In most cases this check will work just fine, there might be cases
      * where an internal forward will bypass the Extensions-Filter and the check
      * will not work. If this is the case, you can disable the check by setting
      * this parameter to false.
      * 
      * In tomahawk for JSF 2.0 since version 1.1.11, this param is set by default to false, otherwise is true.
      */
     @JSFWebConfigParam(defaultValue="for JSF 2.0 since 1.1.11 false, otherwise true", 
             expectedValues="true, false, on, off, yes, no",since="1.1", ignoreUpperLowerCase=true,
             desc="Tomahawk specific: This parameter will check for a properly configured Extensions-Filter if " +
                  "it is needed by the web-app.", tags="tomahawk")
     private static final String  INIT_CHECK_EXTENSIONS_FILTER = "org.apache.myfaces.CHECK_EXTENSIONS_FILTER";
     private static final boolean INIT_CHECK_EXTENSIONS_FILTER_DEFAULT = false;
 
     /**
      * Tomahawk specific: Interpret "readonly" property as "disable" for select components like t:selectOneRow.
      */
     @JSFWebConfigParam(defaultValue="true", expectedValues="true, false, on, off, yes, no",since="1.1", 
             ignoreUpperLowerCase=true, tags="tomahawk", group="render")
     private static final String INIT_READONLY_AS_DISABLED_FOR_SELECT = 
         "org.apache.myfaces.READONLY_AS_DISABLED_FOR_SELECTS";
     private static final boolean INIT_READONLY_AS_DISABLED_FOR_SELECT_DEFAULT = true;
 
     /**
      * Set the time in seconds that check for updates of web.xml and faces-config descriptors and 
      * refresh the configuration.
      * This param is valid only if project stage is not production. Set this param to 0 disable this feature.
      */
     @JSFWebConfigParam(defaultValue="2",since="1.1", classType="java.lang.Long")
     public static final String INIT_PARAM_CONFIG_REFRESH_PERIOD = "org.apache.myfaces.CONFIG_REFRESH_PERIOD";
     public static final long INIT_PARAM_CONFIG_REFRESH_PERIOD_DEFAULT = 2;
 
     /**
      * Set the view state using a javascript function instead a hidden input field.
      */
     @JSFWebConfigParam(defaultValue="false", expectedValues="true, false, on, off, yes, no",since="1.1", 
             ignoreUpperLowerCase=true, deprecated=true, group="state")
     private static final String  INIT_PARAM_VIEWSTATE_JAVASCRIPT = "org.apache.myfaces.VIEWSTATE_JAVASCRIPT";
     private static final boolean INIT_PARAM_VIEWSTATE_JAVASCRIPT_DEFAULT = false;
 
     /**
      * Define if the input field that should store the state (javax.faces.ViewState) should render 
      * id="javax.faces.ViewState".
      * 
      * JSF API 1.2 defines a "javax.faces.ViewState" client parameter, that must be rendered as both the "name"
      * and the "id" attribute of the hidden input that is rendered for the purpose of state saving
      * (see ResponseStateManager.VIEW_STATE_PARAM).
      * Actually this causes duplicate id attributes and thus invalid XHTML pages when multiple forms are rendered on
      * one page. With the org.apache.myfaces.RENDER_VIEWSTATE_ID context parameter you can tune this behaviour.
      * <br/>Set it to
      * <ul><li>true - to render JSF 1.2 compliant id attributes (that might cause invalid XHTML), or</li>
      * <li>false - to omit rendering of the id attribute (which is only needed for very special 
      * AJAX/Javascript components)</li></ul>
      * Default value is: true (for backwards compatibility and JSF 1.2 compliancy) 
      */
     @JSFWebConfigParam(defaultValue="true", expectedValues="true, false, on, off, yes, no",since="1.1", 
             ignoreUpperLowerCase=true, group="state")
     private static final String  INIT_PARAM_RENDER_VIEWSTATE_ID = "org.apache.myfaces.RENDER_VIEWSTATE_ID";
     private static final boolean INIT_PARAM_RENDER_VIEWSTATE_ID_DEFAULT = true;
 
     /**
      * Use "&amp;amp;" entity instead a plain "&amp;" character within HTML.
      * <p>W3C recommends to use the "&amp;amp;" entity instead of a plain "&amp;" character within HTML.
      * This also applies to attribute values and thus to the "href" attribute of &lt;a&gt; elements as well.
      * Even more, when XHTML is used as output the usage of plain "&amp;" characters is forbidden and would lead to
      * invalid XML code.
      * Therefore, since version 1.1.6 MyFaces renders the correct "&amp;amp;" entity for links.</p>
      * <p>The init parameter
      * org.apache.myfaces.STRICT_XHTML_LINKS makes it possible to restore the old behaviour and to make MyFaces
      * "bug compatible" to the Sun RI which renders plain "&amp;" chars in links as well.</p>
      * <p>
      * See: <a href="http://www.w3.org/TR/html401/charset.html#h-5.3.2">HTML 4.01 Specification</a>
      * See: <a href="http://issues.apache.org/jira/browse/MYFACES-1774">Jira: MYFACES-1774</a>
      * </p>
      */
     @JSFWebConfigParam(defaultValue="true", expectedValues="true, false, on, off, yes, no",since="1.1.6", 
             ignoreUpperLowerCase=true, group="render")
     private static final String  INIT_PARAM_STRICT_XHTML_LINKS = "org.apache.myfaces.STRICT_XHTML_LINKS";
     private static final boolean INIT_PARAM_STRICT_XHTML_LINKS_DEFAULT = true;
     
     /**
      * This param renders the clear javascript on button necessary only for
      * compatibility with hidden fields feature of myfaces. This is done 
      * because jsf ri does not render javascript on onclick method for button,
      * so myfaces should do this.
      */
     @JSFWebConfigParam(defaultValue="false", expectedValues="true, false, on, off, yes, no",since="1.2.3",
             ignoreUpperLowerCase=true, group="render")
     private static final String INIT_PARAM_RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON = 
         "org.apache.myfaces.RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON";
     private static final boolean INIT_PARAM_RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON_DEFAULT= false;
 
     /**
      * This param renders hidden fields at the end of h:form for link params when h:commandLink + f:param is used,
      * instead use javascript to create them. Set this param to true also enables 
      * org.apache.myfaces.RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON 
      * automatically to ensure consistency. This feature is required to support Windows Mobile 6, because in 
      * this environment, document.createElement() and form.appendChild() javascript methods are not supported.
      */
     @JSFWebConfigParam(defaultValue="false", expectedValues="true, false, on, off, yes, no",since="1.2.9",
             ignoreUpperLowerCase=true, group="render")
     private static final String INIT_PARAM_RENDER_HIDDEN_FIELDS_FOR_LINK_PARAMS = 
         "org.apache.myfaces.RENDER_HIDDEN_FIELDS_FOR_LINK_PARAMS";
     private static final boolean INIT_PARAM_RENDER_HIDDEN_FIELDS_FOR_LINK_PARAMS_DEFAULT= false;
     
     /**
      * Add a code that save the form before submit using a
      * link (call to window.external.AutoCompleteSaveForm(form) ). It's a bug on IE.
      */
     @JSFWebConfigParam(defaultValue="false", expectedValues="true, false, on, off, yes, no",since="1.1",
             ignoreUpperLowerCase=true, group="render")
     private static final String INIT_PARAM_SAVE_FORM_SUBMIT_LINK_IE = "org.apache.myfaces.SAVE_FORM_SUBMIT_LINK_IE";
     private static final boolean INIT_PARAM_SAVE_FORM_SUBMIT_LINK_IE_DEFAULT = false;
     
     /**
      * Define an alternate class name that will be used to initialize MyFaces, instead the default 
      * javax.faces.webapp.FacesServlet.
      * 
      * <p>This helps MyFaces to detect the mappings and other additional configuration used to setup the 
      * environment, and prevent abort initialization if no FacesServlet config is detected.
      * </p>
      */
     @JSFWebConfigParam(since="1.2.7")
     private static final String INIT_PARAM_DELEGATE_FACES_SERVLET = "org.apache.myfaces.DELEGATE_FACES_SERVLET";
 
     /**
      * Indicate if the facelet associated to the view should be reapplied when the view is refreshed.
      *  Default mode is "auto".
      * 
      * <p>This param is only valid when partial state saving is on.
      * If this is set as true, the tag-handlers are always reapplied before render view, like in facelets 1.1.x, 
      * allowing c:if work correctly to "toggle" components based on a value changed on invoke application phase. 
      * If the param is set as "auto", the implementation check if c:if, c:forEach, 
      * c:choose and ui:include with src=ELExpression is used on the page and if that so, mark the view
      * to be refreshed.</p> 
      */
     @JSFWebConfigParam(since="2.0", defaultValue="auto", expectedValues="true,false,auto", tags="performance", 
             ignoreUpperLowerCase=true, group="state")
     public final static String INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS = 
         "org.apache.myfaces.REFRESH_TRANSIENT_BUILD_ON_PSS"; 
     public final static String INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS_DEFAULT = "auto";
 
     /**
      * Enable or disable a special mode that enable full state for parent components containing c:if, c:forEach, 
      * c:choose and ui:include with src=ELExpression. By default is disabled(false).
      * 
      * <p>This param is only valid when partial state saving is on.
      * If this is set as true, parent components containing  c:if, c:forEach, 
      * c:choose and ui:include with src=ELExpression are marked to be restored fully, so state
      * is preserved between request.</p>
      */
     @JSFWebConfigParam(since="2.0", defaultValue="false", expectedValues="true, false, on, off, yes, no", 
             tags="performance", ignoreUpperLowerCase=true, group="state")
     public final static String INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS_PRESERVE_STATE = 
         "org.apache.myfaces.REFRESH_TRANSIENT_BUILD_ON_PSS_PRESERVE_STATE";
     public final static boolean INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS_PRESERVE_STATE_DEFAULT = false;
     
     /**
      * If set to <code>true</code>, tag library XML files and faces config XML files using schema 
      * will be validated during application start up
      */
     @JSFWebConfigParam(since="2.0", expectedValues="true, false, on, off, yes, no", ignoreUpperLowerCase=true)
     public final static String INIT_PARAM_VALIDATE_XML = "org.apache.myfaces.VALIDATE_XML";
     public final static boolean INIT_PARAM_VALIDATE_XML_DEFAULT = false;
     
     /**
      * Wrap content inside script with xml comment to prevent old browsers to display it. By default it is true. 
      */
     @JSFWebConfigParam(since="2.0.1", expectedValues="true, false, on, off, yes, no", defaultValue="true",
             ignoreUpperLowerCase=true, group="render")
     public final static String INIT_PARAM_WRAP_SCRIPT_CONTENT_WITH_XML_COMMENT_TAG = 
         "org.apache.myfaces.WRAP_SCRIPT_CONTENT_WITH_XML_COMMENT_TAG";
     public final static boolean INIT_PARAM_WRAP_SCRIPT_CONTENT_WITH_XML_COMMENT_TAG_DEFAULT = true;
     
     /**
      * If set true, render the form submit script inline, as in myfaces core 1.2 and earlier versions 
      */
     @JSFWebConfigParam(since="2.0.2", expectedValues="true, false, on, off, yes, no", defaultValue="false", 
             ignoreUpperLowerCase=true, group="render")
     public final static String INIT_PARAM_RENDER_FORM_SUBMIT_SCRIPT_INLINE = 
         "org.apache.myfaces.RENDER_FORM_SUBMIT_SCRIPT_INLINE";
     public final static boolean INIT_PARAM_RENDER_FORM_SUBMIT_SCRIPT_INLINE_DEFAULT = false;
     
     /**
      * Enable/disable DebugPhaseListener feature, with provide useful information about ValueHolder 
      * variables (submittedValue, localValue, value).
      * Note evaluate those getters for each component could cause some unwanted side effects when 
      * using "access" type scopes like on MyFaces CODI.
      * This param only has effect when project stage is Development.     
      */
     @JSFWebConfigParam(since="2.0.8")
     public final static String INIT_PARAM_DEBUG_PHASE_LISTENER = "org.apache.myfaces.DEBUG_PHASE_LISTENER";
     public final static boolean INIT_PARAM_DEBUG_PHASE_LISTENER_DEFAULT = false;
     
     /**
      * Detect if a target (usually head) should be update for the current view in an ajax render 
      * operation. This is activated if a css or js resource is added dynamically by effect of a refresh 
      * (c:if, ui:include src="#{...}" or a manipulation of the tree). This ensures ajax updates of content 
      * using ui:include will be consistent. Note this behavior is a myfaces specific extension, so to 
      * ensure strict compatibility with the spec, set this param to false (default false).
      */
     @JSFWebConfigParam(since="2.0.10", expectedValues="true, false", defaultValue="false")
     public final static String INIT_PARAM_STRICT_JSF_2_REFRESH_TARGET_AJAX = 
         "org.apache.myfaces.STRICT_JSF_2_REFRESH_TARGET_AJAX";
     public final static boolean INIT_PARAM_STRICT_JSF_2_REFRESH_TARGET_AJAX_DEFAULT = false;
     
     /**
      * Change default getType() behavior for composite component EL resolver, from return null 
      * (see JSF 2_0 spec section 5_6_2_2) to
      * use the metadata information added by composite:attribute, ensuring components working with 
      * chained EL expressions to find the
      * right type when a getType() is called over the source EL expression.
      * 
      * To ensure strict compatibility with the spec set this param to true (by default is false, 
      * so the change is enabled by default). 
      */
     @JSFWebConfigParam(since="2.0.10", expectedValues="true, false", defaultValue="false", group="EL")
     public final static String INIT_PARAM_STRICT_JSF_2_CC_EL_RESOLVER = 
         "org.apache.myfaces.STRICT_JSF_2_CC_EL_RESOLVER";
     public final static boolean INIT_PARAM_STRICT_JSF_2_CC_EL_RESOLVER_DEFAULT = false;
     
     /**
      * Define the default content type that the default ResponseWriter generates, when no match can be derived from
      * HTTP Accept Header.
      */
     @JSFWebConfigParam(since="2.0.11,2.1.5", expectedValues="text/html, application/xhtml+xml", 
             defaultValue="text/html", group="render")
     public final static String INIT_PARAM_DEFAULT_RESPONSE_WRITER_CONTENT_TYPE_MODE = 
         "org.apache.myfaces.DEFAULT_RESPONSE_WRITER_CONTENT_TYPE_MODE";
     public final static String INIT_PARAM_DEFAULT_RESPONSE_WRITER_CONTENT_TYPE_MODE_DEFAULT = "text/html";
 
     /**
      * Enable or disable a cache used to "remember" the generated facelets unique ids and reduce 
      * the impact on memory usage, only active if javax.faces.FACELETS_REFRESH_PERIOD is -1 (no refresh).
      */
     @JSFWebConfigParam(defaultValue = "false", since = "2.0.13, 2.1.7", expectedValues="true, false", 
             group="viewhandler", tags="performance",
             desc="Enable or disable a cache used to 'remember'  the generated facelets unique ids " + 
                  "and reduce the impact over memory usage.")
     public static final String INIT_PARAM_VIEW_UNIQUE_IDS_CACHE_ENABLED = 
         "org.apache.myfaces.VIEW_UNIQUE_IDS_CACHE_ENABLED";
     public static final boolean INIT_PARAM_VIEW_UNIQUE_IDS_CACHE_ENABLED_DEFAULT = false;
     
     /**
      * Set the size of the cache used to store strings generated using SectionUniqueIdCounter
      * for component ids. If this is set to 0, no cache is used. By default is set to 100.
      */
     @JSFWebConfigParam(defaultValue = "100", since = "2.0.13, 2.1.7",
             group="viewhandler", tags="performance")
     public static final String INIT_PARAM_COMPONENT_UNIQUE_IDS_CACHE_SIZE =
         "org.apache.myfaces.COMPONENT_UNIQUE_IDS_CACHE_SIZE";
     public static final int INIT_PARAM_COMPONENT_UNIQUE_IDS_CACHE_SIZE_DEFAULT = 100;
 
     /**
     * If set false, myfaces won't support JSP and javax.faces.el. JSP are deprecated in JSF 2.X, javax.faces.el in 
     * in JSF 1.2. Default value is true. 
     * 
     * If this property is set is false, JSF 1.1 VariableResolver and PropertyResolver config (replaced in JSF 1.2 by
     * ELResolver) and all related logic for JSP is skipped, making EL evaluation faster.  
     */
     @JSFWebConfigParam(since="2.0.13,2.1.7", expectedValues="true,false", defaultValue="true",
          desc="If set false, myfaces won't support JSP and javax.faces.el. JSP are deprecated in " +
          "JSF 2.X, javax.faces.el in in JSF 1.2. Default value is true.",
          group="EL", tags="performance ")
     public final static String INIT_PARAM_SUPPORT_JSP_AND_FACES_EL = "org.apache.myfaces.SUPPORT_JSP_AND_FACES_EL";
     public final static boolean INIT_PARAM_SUPPORT_JSP_AND_FACES_EL_DEFAULT = true;
     
     /**
      * When the application runs inside Google Application Engine container (GAE),
      * indicate which jar files should be scanned for files (faces-config, facelets taglib
      * or annotations). It accept simple wildcard patterns like myfavoritejsflib-*.jar or 
      * myfavoritejsflib-1.1.?.jar. By default, all the classpath is scanned for files 
      * annotations (so it adds an small delay on startup).
      */
     @JSFWebConfigParam(since = "2.1.8, 2.0.14", expectedValues="none, myfavoritejsflib-*.jar",
             tags="performance, GAE")
     public static final String INIT_PARAM_GAE_JSF_JAR_FILES = "org.apache.myfaces.GAE_JSF_JAR_FILES";
     public final static String INIT_PARAM_GAE_JSF_JAR_FILES_DEFAULT = null;
 
     /**
      * When the application runs inside Google Application Engine container (GAE),
      * indicate which jar files should be scanned for annotations. This param overrides
      * org.apache.myfaces.GAE_JSF_JAR_FILES behavior that tries to find faces-config.xml or
      * files ending with .faces-config.xml in /META-INF folder and if that so, try to
      * find JSF annotations in the whole jar file. It accept simple wildcard patterns 
      * like myfavoritejsflib-*.jar or myfavoritejsflib-1.1.?.jar.
      * By default, all the classpath is scanned for annotations (so it adds an small
      * delay on startup).
      */
     @JSFWebConfigParam(since = "2.1.8, 2.0.14", expectedValues="none, myfavoritejsflib-*.jar",
             tags="performance, GAE")
     public static final String INIT_PARAM_GAE_JSF_ANNOTATIONS_JAR_FILES = 
             "org.apache.myfaces.GAE_JSF_ANNOTATIONS_JAR_FILES";
     public final static String INIT_PARAM_GAE_JSF_ANNOTATIONS_JAR_FILES_DEFAULT = null;
 
     private boolean _prettyHtml;
     private boolean _detectJavascript;
     private boolean _allowJavascript;
     private boolean _autoScroll;
     private String _addResourceClass;
     private String _resourceVirtualPath;
     private boolean _checkExtensionsFilter;
     private boolean _readonlyAsDisabledForSelect;
     private long _configRefreshPeriod;
     private boolean _viewStateJavascript;
     private boolean _renderViewStateId;
     private boolean _strictXhtmlLinks;
     private boolean _renderClearJavascriptOnButton;
     private boolean renderHiddenFieldsForLinkParams;
     private boolean _saveFormSubmitLinkIE;
     private String _delegateFacesServlet;
     private boolean _refreshTransientBuildOnPSS;
     private boolean _refreshTransientBuildOnPSSAuto;
     private boolean refreshTransientBuildOnPSSPreserveState;
     private boolean _validateXML;
     private boolean _wrapScriptContentWithXmlCommentTag;
     private boolean _renderFormSubmitScriptInline;
     private boolean _debugPhaseListenerEnabled;
     private boolean _strictJsf2RefreshTargetAjax;
     private boolean _strictJsf2CCELResolver;
     private String _defaultResponseWriterContentTypeMode;
     private boolean _viewUniqueIdsCacheEnabled;
     private int _componentUniqueIdsCacheSize;
     private boolean _supportJSPAndFacesEL;
     private String _gaeJsfJarFiles;
     private String _gaeJsfAnnotationsJarFiles;
 
     private static final boolean TOMAHAWK_AVAILABLE;
     private static final boolean MYFACES_IMPL_AVAILABLE;
     private static final boolean RI_IMPL_AVAILABLE;
 
     static
     {
         boolean tomahawkAvailable;
         try
         {
             ClassUtils.classForName("org.apache.myfaces.webapp.filter.ExtensionsFilter");
             tomahawkAvailable = true;
         }
         catch (ClassNotFoundException e)
         {
             tomahawkAvailable = false;
         }
         TOMAHAWK_AVAILABLE = tomahawkAvailable;
     }
 
     static
     {
         boolean myfacesImplAvailable;
         try
         {
             ClassUtils.classForName("org.apache.myfaces.application.ApplicationImpl");
             myfacesImplAvailable = true;
         }
         catch (ClassNotFoundException e)
         {
             myfacesImplAvailable = false;
         }
         MYFACES_IMPL_AVAILABLE = myfacesImplAvailable;
     }
 
     static
     {
         boolean riImplAvailable;
         try
         {
             ClassUtils.classForName("com.sun.faces.application.ApplicationImpl");
             riImplAvailable = true;
         }
         catch (ClassNotFoundException e)
         {
             riImplAvailable = false;
         }
         RI_IMPL_AVAILABLE = riImplAvailable;
     }
 
     public static MyfacesConfig getCurrentInstance(ExternalContext extCtx)
     {
         MyfacesConfig myfacesConfig = (MyfacesConfig) extCtx
                 .getApplicationMap().get(APPLICATION_MAP_PARAM_NAME);
         if (myfacesConfig == null)
         {
 
             myfacesConfig = createAndInitializeMyFacesConfig(extCtx);
 
             extCtx.getApplicationMap().put(APPLICATION_MAP_PARAM_NAME, myfacesConfig);
 
         }
 
         return myfacesConfig;
     }
     
     public MyfacesConfig()
     {
         setPrettyHtml(INIT_PARAM_PRETTY_HTML_DEFAULT);
         setAllowJavascript(INIT_PARAM_ALLOW_JAVASCRIPT_DEFAULT);
         setRenderClearJavascriptOnButton(INIT_PARAM_RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON_DEFAULT);
         setRenderHiddenFieldsForLinkParams(INIT_PARAM_RENDER_HIDDEN_FIELDS_FOR_LINK_PARAMS_DEFAULT);
         setSaveFormSubmitLinkIE(INIT_PARAM_SAVE_FORM_SUBMIT_LINK_IE_DEFAULT);
         setReadonlyAsDisabledForSelect(INIT_READONLY_AS_DISABLED_FOR_SELECT_DEFAULT);
         setRenderViewStateId(INIT_PARAM_RENDER_VIEWSTATE_ID_DEFAULT);
         setStrictXhtmlLinks(INIT_PARAM_STRICT_XHTML_LINKS_DEFAULT);
         setConfigRefreshPeriod(INIT_PARAM_CONFIG_REFRESH_PERIOD_DEFAULT);        
         setViewStateJavascript(INIT_PARAM_VIEWSTATE_JAVASCRIPT_DEFAULT);        
         setRefreshTransientBuildOnPSS(true);
         setRefreshTransientBuildOnPSSAuto(true);
         setRefreshTransientBuildOnPSSPreserveState(INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS_PRESERVE_STATE_DEFAULT);
         setValidateXML(INIT_PARAM_VALIDATE_XML_DEFAULT);
         setWrapScriptContentWithXmlCommentTag(INIT_PARAM_WRAP_SCRIPT_CONTENT_WITH_XML_COMMENT_TAG_DEFAULT);
         setDetectJavascript(INIT_PARAM_DETECT_JAVASCRIPT_DEFAULT);
         setAutoScroll(INIT_PARAM_AUTO_SCROLL_DEFAULT);
         setAddResourceClass(INIT_PARAM_ADD_RESOURCE_CLASS_DEFAULT);
         setResourceVirtualPath(INIT_PARAM_RESOURCE_VIRTUAL_PATH_DEFAULT);
         //The default is true but we'll let it false because it depends if 
         //tomahawk is on classpath and no test environment is set
         setCheckExtensionsFilter(false);
         setRenderFormSubmitScriptInline(INIT_PARAM_RENDER_FORM_SUBMIT_SCRIPT_INLINE_DEFAULT);
         setDebugPhaseListenerEnabled(INIT_PARAM_DEBUG_PHASE_LISTENER_DEFAULT);
         setStrictJsf2RefreshTargetAjax(INIT_PARAM_STRICT_JSF_2_REFRESH_TARGET_AJAX_DEFAULT);
         setStrictJsf2CCELResolver(INIT_PARAM_STRICT_JSF_2_CC_EL_RESOLVER_DEFAULT);
         setDefaultResponseWriterContentTypeMode(INIT_PARAM_DEFAULT_RESPONSE_WRITER_CONTENT_TYPE_MODE_DEFAULT);
         setViewUniqueIdsCacheEnabled(INIT_PARAM_VIEW_UNIQUE_IDS_CACHE_ENABLED_DEFAULT);
         setComponentUniqueIdsCacheSize(INIT_PARAM_COMPONENT_UNIQUE_IDS_CACHE_SIZE_DEFAULT);
         setSupportJSPAndFacesEL(INIT_PARAM_SUPPORT_JSP_AND_FACES_EL_DEFAULT);
         setGaeJsfJarFiles(INIT_PARAM_GAE_JSF_JAR_FILES_DEFAULT);
         setGaeJsfAnnotationsJarFiles(INIT_PARAM_GAE_JSF_ANNOTATIONS_JAR_FILES_DEFAULT);
     }
 
     private static MyfacesConfig createAndInitializeMyFacesConfig(ExternalContext extCtx)
     {
         
         MyfacesConfig myfacesConfig = new MyfacesConfig();
 
         myfacesConfig.setPrettyHtml(getBooleanInitParameter(extCtx, INIT_PARAM_PRETTY_HTML,
                                                             INIT_PARAM_PRETTY_HTML_DEFAULT));
         myfacesConfig.setAllowJavascript(getBooleanInitParameter(extCtx, INIT_PARAM_ALLOW_JAVASCRIPT,
                                                                  INIT_PARAM_ALLOW_JAVASCRIPT_DEFAULT));
 
         myfacesConfig.setRenderClearJavascriptOnButton(getBooleanInitParameter(extCtx, 
                                                             INIT_PARAM_RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON,
                                                             INIT_PARAM_RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON_DEFAULT));
 
         myfacesConfig.setRenderHiddenFieldsForLinkParams(getBooleanInitParameter(extCtx, 
                 INIT_PARAM_RENDER_HIDDEN_FIELDS_FOR_LINK_PARAMS,
                 INIT_PARAM_RENDER_HIDDEN_FIELDS_FOR_LINK_PARAMS_DEFAULT));
 
         myfacesConfig.setSaveFormSubmitLinkIE(getBooleanInitParameter(extCtx, INIT_PARAM_SAVE_FORM_SUBMIT_LINK_IE,
                                                             INIT_PARAM_SAVE_FORM_SUBMIT_LINK_IE_DEFAULT));
         
         myfacesConfig.setReadonlyAsDisabledForSelect(getBooleanInitParameter(extCtx, 
                                                                  INIT_READONLY_AS_DISABLED_FOR_SELECT,
                                                                  INIT_READONLY_AS_DISABLED_FOR_SELECT_DEFAULT));
         myfacesConfig.setRenderViewStateId(getBooleanInitParameter(extCtx, INIT_PARAM_RENDER_VIEWSTATE_ID,
                                                                    INIT_PARAM_RENDER_VIEWSTATE_ID_DEFAULT));
         myfacesConfig.setStrictXhtmlLinks(getBooleanInitParameter(extCtx, INIT_PARAM_STRICT_XHTML_LINKS,
                                                                   INIT_PARAM_STRICT_XHTML_LINKS_DEFAULT));
         myfacesConfig.setRenderFormSubmitScriptInline(getBooleanInitParameter(extCtx,
                                                                   INIT_PARAM_RENDER_FORM_SUBMIT_SCRIPT_INLINE,
                                                                   INIT_PARAM_RENDER_FORM_SUBMIT_SCRIPT_INLINE_DEFAULT));
         
         myfacesConfig.setConfigRefreshPeriod(getLongInitParameter(extCtx, INIT_PARAM_CONFIG_REFRESH_PERIOD,
                 INIT_PARAM_CONFIG_REFRESH_PERIOD_DEFAULT));
 
         myfacesConfig.setViewStateJavascript(getBooleanInitParameter(extCtx, INIT_PARAM_VIEWSTATE_JAVASCRIPT,
                 INIT_PARAM_VIEWSTATE_JAVASCRIPT_DEFAULT));
 
         myfacesConfig.setDelegateFacesServlet(extCtx.getInitParameter(INIT_PARAM_DELEGATE_FACES_SERVLET));
         
         String refreshTransientBuildOnPSS = getStringInitParameter(extCtx, 
                 INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS, 
                 INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS_DEFAULT);
         
         if (refreshTransientBuildOnPSS == null)
         {
             myfacesConfig.setRefreshTransientBuildOnPSS(false);
             myfacesConfig.setRefreshTransientBuildOnPSSAuto(false);
         }
         else if ("auto".equalsIgnoreCase(refreshTransientBuildOnPSS))
         {
             myfacesConfig.setRefreshTransientBuildOnPSS(true);
             myfacesConfig.setRefreshTransientBuildOnPSSAuto(true);
         }
         else if (refreshTransientBuildOnPSS.equalsIgnoreCase("true") || 
                 refreshTransientBuildOnPSS.equalsIgnoreCase("on") || 
                 refreshTransientBuildOnPSS.equalsIgnoreCase("yes"))
         {
             myfacesConfig.setRefreshTransientBuildOnPSS(true);
             myfacesConfig.setRefreshTransientBuildOnPSSAuto(false);
         }
         else
         {
             myfacesConfig.setRefreshTransientBuildOnPSS(false);
             myfacesConfig.setRefreshTransientBuildOnPSSAuto(false);
         }
         
         myfacesConfig.setRefreshTransientBuildOnPSSPreserveState(getBooleanInitParameter(extCtx,
                 INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS_PRESERVE_STATE, 
                 INIT_PARAM_REFRESH_TRANSIENT_BUILD_ON_PSS_PRESERVE_STATE_DEFAULT));
         
         myfacesConfig.setValidateXML(getBooleanInitParameter(extCtx, INIT_PARAM_VALIDATE_XML, 
                 INIT_PARAM_VALIDATE_XML_DEFAULT));
         
         myfacesConfig.setWrapScriptContentWithXmlCommentTag(getBooleanInitParameter(extCtx, 
                 INIT_PARAM_WRAP_SCRIPT_CONTENT_WITH_XML_COMMENT_TAG, 
                 INIT_PARAM_WRAP_SCRIPT_CONTENT_WITH_XML_COMMENT_TAG_DEFAULT));
         
         myfacesConfig.setDebugPhaseListenerEnabled(getBooleanInitParameter(extCtx, INIT_PARAM_DEBUG_PHASE_LISTENER,
                 INIT_PARAM_DEBUG_PHASE_LISTENER_DEFAULT));
         
         myfacesConfig.setStrictJsf2RefreshTargetAjax(WebConfigParamUtils.getBooleanInitParameter(extCtx, 
                 INIT_PARAM_STRICT_JSF_2_REFRESH_TARGET_AJAX, INIT_PARAM_STRICT_JSF_2_REFRESH_TARGET_AJAX_DEFAULT));
         
         myfacesConfig.setStrictJsf2CCELResolver(WebConfigParamUtils.getBooleanInitParameter(extCtx, 
                 INIT_PARAM_STRICT_JSF_2_CC_EL_RESOLVER, INIT_PARAM_STRICT_JSF_2_CC_EL_RESOLVER_DEFAULT));
         
         myfacesConfig.setDefaultResponseWriterContentTypeMode(WebConfigParamUtils.getStringInitParameter(
                 extCtx, INIT_PARAM_DEFAULT_RESPONSE_WRITER_CONTENT_TYPE_MODE,
                 INIT_PARAM_DEFAULT_RESPONSE_WRITER_CONTENT_TYPE_MODE_DEFAULT));
 
         myfacesConfig.setViewUniqueIdsCacheEnabled(WebConfigParamUtils.getBooleanInitParameter(extCtx, 
                 INIT_PARAM_VIEW_UNIQUE_IDS_CACHE_ENABLED, INIT_PARAM_VIEW_UNIQUE_IDS_CACHE_ENABLED_DEFAULT));
         myfacesConfig.setComponentUniqueIdsCacheSize(
                 WebConfigParamUtils.getIntegerInitParameter(extCtx,
                 INIT_PARAM_COMPONENT_UNIQUE_IDS_CACHE_SIZE, 
                 INIT_PARAM_COMPONENT_UNIQUE_IDS_CACHE_SIZE_DEFAULT));
         myfacesConfig.setSupportJSPAndFacesEL(WebConfigParamUtils.getBooleanInitParameter(extCtx, 
                 INIT_PARAM_SUPPORT_JSP_AND_FACES_EL, INIT_PARAM_SUPPORT_JSP_AND_FACES_EL_DEFAULT));
         
         myfacesConfig.setGaeJsfJarFiles(WebConfigParamUtils.getStringInitParameter(extCtx, 
                 INIT_PARAM_GAE_JSF_JAR_FILES, INIT_PARAM_GAE_JSF_JAR_FILES_DEFAULT));
         myfacesConfig.setGaeJsfAnnotationsJarFiles(WebConfigParamUtils.getStringInitParameter(extCtx, 
                 INIT_PARAM_GAE_JSF_ANNOTATIONS_JAR_FILES, INIT_PARAM_GAE_JSF_ANNOTATIONS_JAR_FILES_DEFAULT));
         
         if (TOMAHAWK_AVAILABLE)
         {
             myfacesConfig.setDetectJavascript(getBooleanInitParameter(extCtx, INIT_PARAM_DETECT_JAVASCRIPT,
                     INIT_PARAM_DETECT_JAVASCRIPT_DEFAULT));
             myfacesConfig.setAutoScroll(getBooleanInitParameter(extCtx, INIT_PARAM_AUTO_SCROLL,
                     INIT_PARAM_AUTO_SCROLL_DEFAULT));
                         
             myfacesConfig.setAddResourceClass(getStringInitParameter(extCtx, INIT_PARAM_ADD_RESOURCE_CLASS,
                     INIT_PARAM_ADD_RESOURCE_CLASS_DEFAULT));
             myfacesConfig.setResourceVirtualPath(getStringInitParameter(extCtx, INIT_PARAM_RESOURCE_VIRTUAL_PATH,
                     INIT_PARAM_RESOURCE_VIRTUAL_PATH_DEFAULT));
 
             myfacesConfig.setCheckExtensionsFilter(getBooleanInitParameter(extCtx, INIT_CHECK_EXTENSIONS_FILTER,
                     INIT_CHECK_EXTENSIONS_FILTER_DEFAULT));
             /*
             if(RI_IMPL_AVAILABLE)
             {
                 if(log.isLoggable(Level.INFO))
                 {
                     log.info("Starting up Tomahawk on the RI-JSF-Implementation.");
                 }
             }
 
             if(MYFACES_IMPL_AVAILABLE)
             {
                 if(log.isLoggable(Level.INFO))
                 {
                     log.info("Starting up Tomahawk on the MyFaces-JSF-Implementation");
                 }
             }*/
         }
         /*
         else
         {
             if (log.isLoggable(Level.INFO))
             {
                 log.info("Tomahawk jar not available. Autoscrolling, DetectJavascript, "+
                 "AddResourceClass and CheckExtensionsFilter are disabled now.");
             }
         }*/
 
         /*
         if(RI_IMPL_AVAILABLE && MYFACES_IMPL_AVAILABLE)
         {
             log.severe("Both MyFaces and the RI are on your classpath. Please make sure to"+
             " use only one of the two JSF-implementations.");
         }*/
         return myfacesConfig;
     }
 
     private static boolean getBooleanInitParameter(ExternalContext externalContext,
                                                    String paramName,
                                                    boolean defaultValue)
     {
         String strValue = externalContext.getInitParameter(paramName);
         if (strValue == null)
         {
             //if (log.isLoggable(Level.INFO)) log.info("No context init parameter '" + 
             // paramName + "' found, using default value " + defaultValue);
             return defaultValue;
         }
         else if (strValue.equalsIgnoreCase("true") || strValue.equalsIgnoreCase("on") || 
                 strValue.equalsIgnoreCase("yes"))
         {
             return true;
         }
         else if (strValue.equalsIgnoreCase("false") || strValue.equalsIgnoreCase("off") || 
                 strValue.equalsIgnoreCase("no"))
         {
             return false;
         }
         else
         {
             //if (log.isLoggable(Level.WARNING)) log.warning("Wrong context init parameter '" + 
             //paramName + "' (='" + strValue + "'), using default value " + defaultValue);
             return defaultValue;
         }
     }
 
     private static String getStringInitParameter(ExternalContext externalContext,
                                                  String paramName,
                                                  String defaultValue)
     {
         String strValue = externalContext.getInitParameter(paramName);
         if (strValue == null)
         {
             //if (log.isLoggable(Level.INFO)) log.info("No context init parameter '" + paramName +
             //"' found, using default value " + defaultValue); //defaultValue==null should not be 
             //a problem here
             return defaultValue;
         }
         
         return strValue;
     }
 
     private static long getLongInitParameter(ExternalContext externalContext,
                                                   String paramName,
                                                   long defaultValue)
     {
        String strValue = externalContext.getInitParameter(paramName);
        if (strValue == null)
        {
            //if (log.isLoggable(Level.INFO)) log.info("No context init parameter '" +paramName +
            //"' found, using default value " +defaultValue);
            return defaultValue;
        }
        else
        {
            try
            {
                return Long.parseLong(strValue);
            }
            catch (NumberFormatException e)
            {
                //if (log.isLoggable(Level.WARNING)) log.warning("Wrong context init parameter '" +
                //paramName + "' (='" + strValue + "'), using default value " + defaultValue);
            }
            return defaultValue;
        }
     }
         
      private void setResourceVirtualPath( String resourceVirtualPath )
      {
          this._resourceVirtualPath = resourceVirtualPath;
     }
 
      public String getResourceVirtualPath()
      {
          return this._resourceVirtualPath;
      }
 
     public boolean isPrettyHtml()
     {
         return _prettyHtml;
     }
 
     private void setPrettyHtml(boolean prettyHtml)
     {
         _prettyHtml = prettyHtml;
     }
 
     public boolean isDetectJavascript()
     {
         return _detectJavascript;
     }
 
     private void setDetectJavascript(boolean detectJavascript)
     {
         _detectJavascript = detectJavascript;
     }
 
     private void setReadonlyAsDisabledForSelect(boolean readonlyAsDisabledForSelect)
     {
         _readonlyAsDisabledForSelect = readonlyAsDisabledForSelect;
     }
 
     public boolean isReadonlyAsDisabledForSelect()
     {
         return _readonlyAsDisabledForSelect;
     }
 
 
    public long getConfigRefreshPeriod()
    {
        return _configRefreshPeriod;
    }
 
    public void setConfigRefreshPeriod(long configRefreshPeriod)
    {
        _configRefreshPeriod = configRefreshPeriod;
    }
 
     /**
      * JSF API 1.2 defines a "javax.faces.ViewState" client parameter, that must be rendered as both the "name"
      * and the "id" attribute of the hidden input that is rendered for the purpose of state saving
      * (see ResponseStateManager.VIEW_STATE_PARAM).
      * Actually this causes duplicate id attributes and thus invalid XHTML pages when multiple forms are rendered on
      * one page. With the {@link #INIT_PARAM_RENDER_VIEWSTATE_ID} context parameter you can tune this behaviour.
      * <br/>Set it to
      * <ul><li>true - to render JSF 1.2 compliant id attributes (that might cause invalid XHTML), or</li>
      * <li>false - to omit rendering of the id attribute (which is only needed for very special AJAX/Javascript 
      * components)</li></ul>
      * Default value is: true (for backwards compatibility and JSF 1.2 compliancy) 
      * @return true, if the client state hidden input "javax.faces.ViewState" id attribute should be rendered
      */
     public boolean isRenderViewStateId()
     {
         return _renderViewStateId;
     }
 
     public void setRenderViewStateId(boolean renderViewStateId)
     {
         _renderViewStateId = renderViewStateId;
     }
 
     /**
      * <p>W3C recommends to use the "&amp;amp;" entity instead of a plain "&amp;" character within HTML.
      * This also applies to attribute values and thus to the "href" attribute of &lt;a&gt; elements as well.
      * Even more, when XHTML is used as output the usage of plain "&amp;" characters is forbidden and would lead to
      * invalid XML code.
      * Therefore, since version 1.1.6 MyFaces renders the correct "&amp;amp;" entity for links.</p>
      * <p>The init parameter
      * {@link #INIT_PARAM_STRICT_XHTML_LINKS} makes it possible to restore the old behaviour and to make MyFaces
      * "bug compatible" to the Sun RI which renders plain "&amp;" chars in links as well.</p>
      * @see <a href="http://www.w3.org/TR/html401/charset.html#h-5.3.2">HTML 4.01 Specification</a>
      * @see <a href="http://issues.apache.org/jira/browse/MYFACES-1774">Jira: MYFACES-1774</a>
      * @return true if ampersand characters ("&amp;") should be correctly rendered as "&amp;amp;" entities 
      *         within link urls (=default), false for old (XHTML incompatible) behaviour
      */
     public boolean isStrictXhtmlLinks()
     {
         return _strictXhtmlLinks;
     }
 
     public void setStrictXhtmlLinks(boolean strictXhtmlLinks)
     {
         _strictXhtmlLinks = strictXhtmlLinks;
     }
 
     public boolean isTomahawkAvailable()
     {
         return TOMAHAWK_AVAILABLE;
     }
 
     public boolean isMyfacesImplAvailable()
     {
         return MYFACES_IMPL_AVAILABLE;
     }
 
     public boolean isRiImplAvailable()
     {
         return RI_IMPL_AVAILABLE;
     }
 
     /**
      * Do not use this in renderers directly!
      * You should use {@link org.apache.myfaces.shared.renderkit.html.util.JavascriptUtils#isJavascriptAllowed}
      * to determine if javascript is allowed or not.
      */
     public boolean isAllowJavascript()
     {
         return _allowJavascript;
     }
 
     private void setAllowJavascript(boolean allowJavascript)
     {
         _allowJavascript = allowJavascript;
     }
 
     public boolean isAutoScroll()
     {
         return _autoScroll;
     }
 
     private void setAutoScroll(boolean autoScroll)
     {
         _autoScroll = autoScroll;
     }
 
     private void setAddResourceClass(String addResourceClass)
     {
         _addResourceClass = addResourceClass;
     }
 
     public String getAddResourceClass()
     {
         return _addResourceClass;
     }
 
     /**
      * ExtensionFilter needs access to AddResourceClass init param without having
      * an ExternalContext at hand.
      */
     public static String getAddResourceClassFromServletContext(ServletContext servletContext)
     {
         String addResourceClass = servletContext.getInitParameter(INIT_PARAM_ADD_RESOURCE_CLASS);
 
         return addResourceClass == null ? INIT_PARAM_ADD_RESOURCE_CLASS_DEFAULT : addResourceClass;
     }
 
     /**
      * Should the environment be checked so that the ExtensionsFilter will work properly. 
      */
     public boolean isCheckExtensionsFilter()
     {
         return _checkExtensionsFilter;
     }
 
     public void setCheckExtensionsFilter(boolean extensionsFilter)
     {
         _checkExtensionsFilter = extensionsFilter;
     }
 
     /**
      * 
      */
     public boolean isViewStateJavascript()
     {
         return _viewStateJavascript;
     }
 
     private void setViewStateJavascript(boolean viewStateJavascript)
     {
         _viewStateJavascript = viewStateJavascript;
     }
 
     public void setRenderClearJavascriptOnButton(
             boolean renderClearJavascriptOnButton)
     {
         _renderClearJavascriptOnButton = renderClearJavascriptOnButton;
     }
 
     /**
      * This param renders the clear javascript on button necessary only for
      * compatibility with hidden fields feature of myfaces. This is done 
      * because jsf ri does not render javascript on onclick method for button,
      * so myfaces should do this.
      * 
      * @return
      */
     public boolean isRenderClearJavascriptOnButton()
     {
         return _renderClearJavascriptOnButton;
     }
 
     public boolean isRenderHiddenFieldsForLinkParams()
     {
         return renderHiddenFieldsForLinkParams;
     }
 
     public void setRenderHiddenFieldsForLinkParams(
             boolean renderHiddenFieldsForLinkParams)
     {
         this.renderHiddenFieldsForLinkParams = renderHiddenFieldsForLinkParams;
     }
 
     public void setSaveFormSubmitLinkIE(boolean saveFormSubmitLinkIE)
     {
         _saveFormSubmitLinkIE = saveFormSubmitLinkIE;
     }
 
     /**
      * Add a code that save the form when submit a form using a
      * link. It's a bug on IE.
      * 
      * @return
      */
     public boolean isSaveFormSubmitLinkIE()
     {
         return _saveFormSubmitLinkIE;
     }
     
     public String getDelegateFacesServlet()
     {
         return _delegateFacesServlet;
     }
     
     public void setDelegateFacesServlet(String delegateFacesServlet)
     {
         _delegateFacesServlet = delegateFacesServlet;
     }
 
     public boolean isRefreshTransientBuildOnPSS()
     {
         return _refreshTransientBuildOnPSS;
     }
 
     public void setRefreshTransientBuildOnPSS(boolean refreshTransientBuildOnPSS)
     {
         this._refreshTransientBuildOnPSS = refreshTransientBuildOnPSS;
     }
 
     public boolean isRefreshTransientBuildOnPSSAuto()
     {
         return _refreshTransientBuildOnPSSAuto;
     }
 
     public void setRefreshTransientBuildOnPSSAuto(
             boolean refreshTransientBuildOnPSSAuto)
     {
         this._refreshTransientBuildOnPSSAuto = refreshTransientBuildOnPSSAuto;
     }
 
     public boolean isRefreshTransientBuildOnPSSPreserveState()
     {
         return refreshTransientBuildOnPSSPreserveState;
     }
 
     public void setRefreshTransientBuildOnPSSPreserveState(
             boolean refreshTransientBuildOnPSSPreserveState)
     {
         this.refreshTransientBuildOnPSSPreserveState = refreshTransientBuildOnPSSPreserveState;
     }
     
     public boolean isValidateXML()
     {
         return _validateXML;
     }
 
     public void setValidateXML(boolean validateXML)
     {
         _validateXML = validateXML;
     }
 
     public boolean isWrapScriptContentWithXmlCommentTag()
     {
         return _wrapScriptContentWithXmlCommentTag;
     }
 
     public void setWrapScriptContentWithXmlCommentTag(
             boolean wrapScriptContentWithXmlCommentTag)
     {
         this._wrapScriptContentWithXmlCommentTag = wrapScriptContentWithXmlCommentTag;
     }
 
     public boolean isRenderFormSubmitScriptInline()
     {
         return _renderFormSubmitScriptInline;
     }
 
     public void setRenderFormSubmitScriptInline(
             boolean renderFormSubmitScriptInline)
     {
         _renderFormSubmitScriptInline = renderFormSubmitScriptInline;
     }
 
     public boolean isDebugPhaseListenerEnabled()
     {
         return _debugPhaseListenerEnabled;
     }
 
     public void setDebugPhaseListenerEnabled(boolean debugPhaseListener)
     {
         this._debugPhaseListenerEnabled = debugPhaseListener;
     }
 
     public boolean isStrictJsf2RefreshTargetAjax()
     {
         return _strictJsf2RefreshTargetAjax;
     }
 
     public void setStrictJsf2RefreshTargetAjax(boolean strictJsf2RefreshTargetAjax)
     {
         this._strictJsf2RefreshTargetAjax = strictJsf2RefreshTargetAjax;
     }
 
     public boolean isStrictJsf2CCELResolver()
     {
         return _strictJsf2CCELResolver;
     }
 
     public void setStrictJsf2CCELResolver(boolean strictJsf2CCELResolver)
     {
         this._strictJsf2CCELResolver = strictJsf2CCELResolver;
     }
 
     public String getDefaultResponseWriterContentTypeMode()
     {
         return _defaultResponseWriterContentTypeMode;
     }
 
     public void setDefaultResponseWriterContentTypeMode(
             String defaultResponseWriterContentTypeMode)
     {
         this._defaultResponseWriterContentTypeMode = defaultResponseWriterContentTypeMode;
     }
 
     public boolean isViewUniqueIdsCacheEnabled()
     {
         return _viewUniqueIdsCacheEnabled;
     }
 
     public void setViewUniqueIdsCacheEnabled(boolean viewUniqueIdsCacheEnabled)
     {
         _viewUniqueIdsCacheEnabled = viewUniqueIdsCacheEnabled;
     }
 
     public boolean isSupportJSPAndFacesEL()
     {
         return _supportJSPAndFacesEL;
     }
 
     public void setSupportJSPAndFacesEL(
             boolean supportJSPANDFacesEL)
     {
         _supportJSPAndFacesEL = supportJSPANDFacesEL;
     }
 
     public int getComponentUniqueIdsCacheSize()
     {
         return _componentUniqueIdsCacheSize;
     }
 
     public void setComponentUniqueIdsCacheSize(int componentUniqueIdsCacheSize)
     {
         this._componentUniqueIdsCacheSize = componentUniqueIdsCacheSize;
     }
 
     public String getGaeJsfJarFiles()
     {
         return _gaeJsfJarFiles;
     }
 
     public void setGaeJsfJarFiles(String gaeJsfJarFiles)
     {
         this._gaeJsfJarFiles = gaeJsfJarFiles;
     }
 
     public String getGaeJsfAnnotationsJarFiles()
     {
         return _gaeJsfAnnotationsJarFiles;
     }
 
     public void setGaeJsfAnnotationsJarFiles(String gaeJsfAnnotationsJarFiles)
     {
         this._gaeJsfAnnotationsJarFiles = gaeJsfAnnotationsJarFiles;
     }
 
 }