package com.atlassian.plugin.servlet.filter;
   
   import com.atlassian.plugin.servlet.descriptors.ServletFilterModuleDescriptor;
   
   import javax.servlet.Filter;
   import javax.servlet.FilterConfig;
   import javax.servlet.ServletContext;
   import java.util.Collections;
   import java.util.Enumeration;
  
  /**
   * Instances of the PluginFilterConfig are passed to plugins {@link Filter} init() method. It provides
   * access to the init parameters defined in the plugin xml as well as the ServletContext shared by other filters and
   * servlets in the plugin.
   *
   * @since 2.1.0
   */
  public class PluginFilterConfig implements FilterConfig {
      private final ServletFilterModuleDescriptor descriptor;
      private final ServletContext servletContext;
  
      public PluginFilterConfig(ServletFilterModuleDescriptor descriptor, ServletContext servletContext) {
          this.descriptor = descriptor;
          this.servletContext = servletContext;
      }
  
      public String getFilterName() {
          return descriptor.getDisplayName();
      }
  
      public String getInitParameter(String name) {
          return descriptor.getInitParams().get(name);
      }
  
      public Enumeration<String> getInitParameterNames() {
          return Collections.enumeration(descriptor.getInitParams().keySet());
      }
  
      public ServletContext getServletContext() {
          return servletContext;
      }
  
  }