/**

  * This file is part of the equanda project.

  *

  * The contents of this file are subject to the Mozilla Public License Version 1.1 (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.mozilla.org/MPL/

  *

  * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF

  * ANY KIND, either express or implied. See the License for the specific language governing rights and

  * limitations under the License.

  *

  * Alternatively, the contents of this file may be used under the terms of

  * either the GNU General Public License Version 2 or later (the "GPL"), or

  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),

  * in which case the provisions of the GPL or the LGPL are applicable instead

  * of those above. If you wish to allow use of your version of this file only

  * under the terms of either the GPL or the LGPL, and not to allow others to

  * use your version of this file under the terms of the MPL, indicate your

  * decision by deleting the provisions above and replace them with the notice

  * and other provisions required by the GPL or the LGPL. If you do not delete

  * the provisions above, a recipient may use your version of this file under

  * the terms of any one of the MPL, the GPL or the LGPL.

  */

 package org.equanda.tapestry5.components;

 import org.apache.tapestry5.ComponentResources;

 import org.apache.tapestry5.Link;

 import org.apache.tapestry5.annotations.BeginRender;

 import org.apache.tapestry5.annotations.CleanupRender;

 import org.apache.tapestry5.ioc.annotations.Inject;

 import org.apache.tapestry5.services.Environment;

 import java.util.ArrayList;

 import java.util.List;

 /**

  * FormSupport which can contain FormActionLink components and has special provisions for assuring

  * actions can maintain (server side) state inside loops.

  *

  * @author <a href="mailto:joachim@progs.be">Joachim Van der Auwera</a>

  */

 public class FormSupport

 {

     @Inject

     private ComponentResources resources;

     @Inject

     private Environment environment;    

     private String formActionLinkTarget;

     @BeginRender

     Object begin()

     {

         environment.push( FormSupport.class, this );

         return true;

     }

     @CleanupRender

     void cleanupRender()

     {

         environment.pop( FormSupport.class );

     }

     public String getFormActionLinkTarget()

     {

         return formActionLinkTarget;

     }

     public void setFormActionLinkTarget( String formActionLinkTarget )

     {

         this.formActionLinkTarget = formActionLinkTarget;

     }

     public boolean hasLinkTarget()

     {

         return formActionLinkTarget != null && !"".equals( formActionLinkTarget );

     }

     public Link getLinkTarget()

     {

         if ( hasLinkTarget() )

         {

             return new FormLink( formActionLinkTarget );

         }

         return null;

     }

     class FormLink

         implements Link

     {

         private String target;

         public FormLink( String target )

         {

             this.target = target;

         }

         public List<String> getParameterNames()

         {

             return new ArrayList<String>();

         }

         public String getParameterValue( String s )

         {

             return null;

         }

         public void addParameter( String s, String s1 ) {/*ignore*/}

         public String toURI() { return target; }

         public String toRedirectURI() { return target; }

         public String getAnchor()

         {

             return null;

         }

         public void setAnchor( String s ) {/*ignore*/}

         public String toAbsoluteURI() { return target;}

     }

 }