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/*
 * Copyright 2010 Lincoln Baxter, III
 * 
 * Licensed 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 com.ocpsoft.pretty.faces.config.mapping;

import java.util.ArrayList;
import java.util.List;

import com.ocpsoft.pretty.faces.el.Expressions;
import com.ocpsoft.pretty.faces.url.URL;
import com.ocpsoft.pretty.faces.url.URLPatternParser;

/**
 * @author Lincoln Baxter, III 
 */
public class UrlMapping
{
   private String id = "";
   private String parentId = "";
   private boolean outbound = true;
   private String viewId = "";
   private List actions = new ArrayList();
   private String pattern = "";
   private List queryParams = new ArrayList();
   private List pathValidators = new ArrayList();
   private boolean onPostback = true;
   private URLPatternParser parser = null;

   /**
    * Return whether or not this Mapping requires DynaView capabilities
    * 
    * @return True if using DynaView, false if not
    */
   public boolean isDynaView()
   {
      return Expressions.isEL(viewId);
   }

   /**
    * Get this patterns pattern parser instance.
    */
   public URLPatternParser getPatternParser()
   {
      if ((parser == null) && (pattern != null))
      {
         this.parser = new URLPatternParser(pattern);
      }
      return parser;
   }

   /**
    * Return a list of validators that belong to the given parameter.
    */
   public List getValidatorsForPathParam(final PathParameter param)
   {
      List result = new ArrayList();
      for (PathValidator pv : pathValidators)
      {
         if (pv.getIndex() == param.getPosition())
         {
            result.add(pv);
         }
      }
      return result;
   }

   /**
    * Test this mapping against a given URL.
    * 
    * @return True if this mapping matches the URL, false if not.
    */
   public boolean matches(final URL url)
   {
      return getPatternParser().matches(url);
   }

   /**
    * Get this mapping's ID (not prefixed with "pretty:")
    */
   public String getId()
   {
      return id;
   }

   /**
    * Set this mapping's ID (not prefixed with "pretty:")
    */
   public void setId(final String id)
   {
      this.id = id;
   }

   public String getViewId()
   {
      return viewId;
   }

   public void setViewId(final String viewId)
   {
      this.viewId = viewId;
   }

   public List getActions()
   {
      return actions;
   }

   public void setActions(final List actions)
   {
      this.actions = actions;
   }

   public void addAction(final UrlAction action)
   {
      actions.add(action);
   }

   public void addPathValidator(final PathValidator v)
   {
      pathValidators.add(v);
   }

   public List getPathValidators()
   {
      return pathValidators;
   }

   public void setPathValidators(final List pathValidators)
   {
      this.pathValidators = pathValidators;
   }

   public String getPattern()
   {
      return pattern;
   }

   public void setPattern(final String pattern)
   {
      this.pattern = pattern;
      // reset the parser so it gets recreated
      this.parser = null;
   }

   public boolean addQueryParam(final QueryParameter param)
   {
      return queryParams.add(param);
   }

   public List getQueryParams()
   {
      return queryParams;
   }

   public void setQueryParams(final List queryParams)
   {
      this.queryParams = queryParams;
   }

   @Override
   public int hashCode()
   {
      final int prime = 31;
      int result = 1;
      result = prime * result + (id == null ? 0 : id.hashCode());
      return result;
   }

   @Override
   public boolean equals(final Object obj)
   {
      if (this == obj)
      {
         return true;
      }
      if (obj == null)
      {
         return false;
      }
      if (!(obj instanceof UrlMapping))
      {
         return false;
      }
      UrlMapping other = (UrlMapping) obj;
      if (id == null)
      {
         if (other.id != null)
         {
            return false;
         }
      }
      else if (!id.equals(other.id))
      {
         return false;
      }
      return true;
   }

   @Override
   public String toString()
   {
      return "UrlMapping [ " + "id=" + id + ", pattern=" + pattern + ", parentId=" + parentId + ", viewId=" + viewId
               + ", actions=" + actions + ", outbound=" + outbound + ", parser=" + parser + ", pathValidators="
               + pathValidators + ", queryParams=" + queryParams + "]";
   }

   public boolean isOutbound()
   {
      return outbound;
   }

   public void setOutbound(final boolean outbound)
   {
      this.outbound = outbound;
   }

   public boolean isOnPostback()
   {
      return onPostback;
   }

   public void setOnPostback(final boolean onPostback)
   {
      this.onPostback = onPostback;
   }

   public String getParentId()
   {
      return parentId;
   }

   public void setParentId(final String parentId)
   {
      this.parentId = parentId;
   }

   public boolean hasParent()
   {
      return (parentId != null) && !"".equals(parentId.trim());
   }
}