/**

  * Copyright (C) 2006 Philipp Mpalampanis

  *

  * License: MPL 1.1/GPL 2.0/LGPL 2.1

  *

  * 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 net.sf.echobinding.validation;

 import net.sf.echobinding.BoundControl;

 import nextapp.echo2.app.*;

 /**

  * The default validation handler. Draws a red border line around invalid bound controls.

  * 

  */

 public class DefaultValidationHandler implements ValidationHandler {

         private static Border INVALID_BORDER = new Border(1, Color.RED, Border.STYLE_SOLID );

         private Border _originalBorder;

         /**

          * 

          */

         public DefaultValidationHandler(Component widget) {

                 super();

                 if ( ! ( widget instanceof BoundControl ) ) 

                         throw new RuntimeException("Not a bound control. Unsupported control type.: "+widget.getClass() );

                 _originalBorder = ((BoundControl) widget).getBorder();

         }

         /* (non-Javadoc)

          * @see echobinding.datacontrol.ValidationReporter#markInvalid(nextapp.echo2.app.Component)

          */

         public void markInvalid(Component widget) {

                 if (widget instanceof BoundControl) {

                         BoundControl control = ((BoundControl) widget);

                         setBorder( control, INVALID_BORDER );

                 }

         }

         /* (non-Javadoc)

          * @see echobinding.datacontrol.ValidationReporter#markValid(nextapp.echo2.app.Component)

          */

         public void markValid(Component widget) {

                 if (widget instanceof BoundControl) {

                         BoundControl control = ((BoundControl) widget);

                         setBorder( control, _originalBorder );

                 }

         }

         /**

          * @param widget 

          * @param border The border to set

          * @return

          */

         private void setBorder(BoundControl widget, Border border) {

                 Border currentBorder = widget.getBorder();

                 if( border == null ) {

                         if( currentBorder == null ) 

                                 return;

                 }

                 else if( currentBorder != null && _originalBorder.equals( currentBorder) ) {

                         return;

                 }

                 widget.setBorder( border );

         }

 }