/*

  Wotonomy: OpenStep design patterns for pure Java applications.

  Copyright (C) 2000 Blacksmith, Inc.

  This library is free software; you can redistribute it and/or

  modify it under the terms of the GNU Lesser General Public

  License as published by the Free Software Foundation; either

  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,

  but WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public

  License along with this library; if not, see http://www.gnu.org

  */

 package net.wotonomy.web;

 import net.wotonomy.foundation.NSArray;

 import net.wotonomy.foundation.NSDictionary;

 /** 

 * Implements a FORM element with dynamic bindings.

 * @author michael@mpowers.net

 * @author $Author: cgruber $

 * @version $Revision: 905 $

 */

 public class WOForm extends WODynamicElement {

     public WOForm() {

         super();

     }

     public WOForm(String n, NSDictionary m, WOElement t) {

         super(n, m, t);

     }

     public String href(WOContext c) {

         return (String)valueForProperty("href", c.component());

     }

     public String directActionName(WOContext c) {

         return (String)valueForProperty("directAction", c.component());

     }

     public String directActionClass(WOContext c) {

         return (String)valueForProperty("actionClass", c.component());

     }

     public boolean multipleSubmit(WOContext c) {

         return booleanForProperty("multipleSubmit", c.component());

     }

     public void takeValuesFromRequest (

             WORequest aRequest, WOContext aContext)

     {

         if ( rootElement != null )

         {

             rootElement.takeValuesFromRequest( aRequest, aContext );

         }

     }

     public void appendToResponse(WOResponse r, WOContext c) {

         //Append the opening tag

         r.appendContentString("<FORM");

         String link = href(c);

         //Append the href, if present

         if (link != null) {

             r.appendContentString(" HREF=\"");

             r.appendContentString(link);

             r.appendContentString("\"");

             link = null;

         } else {

             link = directActionName(c);

         }

         //otherwise, append Direct Action

         if (link != null) {

             r.appendContentString(" HREF=\"");

             if (directActionClass(c) != null)

                 link = directActionClass(c) + "/" + link;

             r.appendContentString(c.directActionURLForActionNamed(link, urlFields(c.component())));

             r.appendContentString("\"");

             link = null;

 //        } else if (associations.objectForKey("action") != null) {

         } else {

             //finally, append action

             r.appendContentString(" action=\"");

             r.appendContentString(c.componentActionURL());

             r.appendContentString("\"");

         } //else

 // now defaulting to action if not specified(?): WOBuilder does generate WOForms without any bindings(!)        

 //            throw new IllegalArgumentException("You must use one of directActionName, action, or href.");

         //Append any additional properties

         link = additionalHTMLProperties(c.component(), new NSArray(new Object[]{

             "href", "action", "directActionName", "actionClass", "multipleSubmit" }));

         if (link.length() > 0)

             r.appendContentString(link);

         r.appendContentString(">");

         //Notify that we're inside a form now

         c.setInForm(true);

         //Append the inner template

         rootElement.appendToResponse(r, c);

         //Close the tag

         r.appendContentString("</FORM>");

 //        c.deleteLastElementIDComponent();

         c.setInForm(false);

     }

     public WOActionResults invokeAction(WORequest r, WOContext c) {

         //We only process the request if it's not a multipleSubmit (otherwise we leave it to the buttons)

         if (!multipleSubmit(c) 

             && c.elementID().equals(c.senderID()) 

             && associations.objectForKey("action") != null ) {

             return (WOActionResults)valueForProperty("action", c.component());

         }

         WOActionResults res = rootElement.invokeAction(r, c);

         return res;

     }

 }