/**

  * 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.controls;

 import java.beans.PropertyChangeEvent;

 import net.sf.echobinding.BoundControl;

 import net.sf.echobinding.binding.BindingContext;

 import net.sf.echobinding.validation.DefaultValidationHandler;

 import net.sf.echobinding.validation.ValidationHandler;

 import nextapp.echo2.app.ImageReference;

 import nextapp.echo2.app.event.ActionEvent;

 import nextapp.echo2.app.event.ActionListener;

 /**

  * @author Philipp Mpalampanis 

  *

  */

 public class CheckBox extends nextapp.echo2.app.CheckBox implements

                 BoundControl, ActionListener {

         private static final long serialVersionUID = 192196546013312251L;

         /**

          * 

          */

         public CheckBox() {

                 super();

         }

         /**

          * @param text

          */

         public CheckBox(String text) {

                 super(text);

         }

         /**

          * @param icon

          */

         public CheckBox(ImageReference icon) {

                 super(icon);

         }

         /**

          * @param text

          * @param icon

          */

         public CheckBox(String text, ImageReference icon) {

                 super(text, icon);

         }

         private String _id;

         private BindingContext _ctx;

         private ValidationHandler _validationHandler;

         /**

          * Creates a data bound check box.

          * 

          * @param adapterId

          * @param context

          */

         public CheckBox(String adapterId, BindingContext context ) {

                 _id = adapterId;

                 setBindingConext(context);

                 addActionListener(this);

                 setActionCommand( adapterId );

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#setBindingConext(echobinding.BindingContext)

          */

         public void setBindingConext(BindingContext context) {

                 if(context == null)        return;

                 if( _ctx != null) _ctx.removeControl(this);

                 context.registerControl( _id, this);

                 _ctx = context;

                 update();

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#setBindingId(java.lang.String)

          */

         public void setAdapterId(String bindingId) {

                 _id = bindingId;

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#loadValues()

          */

         public void update() {

                 Boolean checked = (Boolean) _ctx.getValue(_id);

                 setSelected(checked);        

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#saveValues()

          */

         public void save() {

                 if(!isDirty())

                         return;

                 validateInput();

                 if(isValid())

                         _ctx.setValue(_id, isSelected());

         }

         /* (non-Javadoc)

          * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)

          */

         public void propertyChange(PropertyChangeEvent event) {

                 update();        // reload values

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#isValid()

          */

         public boolean isValid() {

                 return _ctx.validate(_id, isSelected()).isValid();

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#validateInput()

          */

         public void validateInput() {

                 initValidationHandler();

                 if(isValid())

                         _validationHandler.markValid(this);

                 else

                         _validationHandler.markInvalid(this);

         }

         private void initValidationHandler() {

                 if( _validationHandler == null ) {

                         _validationHandler = _ctx.getValidationHandler(_id);

                         if( _validationHandler == null )

                                 _validationHandler = new DefaultValidationHandler(this);

                 }

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#isDirty()

          */

         public boolean isDirty() {

                 return _ctx.isDirty(_id, isSelected() );

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#getValue()

          */

         public Object getValue() {

                 return new Boolean(isSelected());

         }

         /* (non-Javadoc)

          * @see nextapp.echo2.app.event.ActionListener#actionPerformed(nextapp.echo2.app.event.ActionEvent)

          */

         public void actionPerformed(ActionEvent arg0) {

                 firePropertyChange( ACTION_LISTENERS_CHANGED_PROPERTY, !isSelected(), isSelected() );

         }

         /* (non-Javadoc)

          * @see echobinding.BoundControl#setValue(java.lang.Object)

          */

         public void setValue(Object value) {

                 if(value==null) return;

                 setSelected( (Boolean) value );

         }

 }