// Copyright 2006 Daniel Gredler

 //

 // 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 net.sf.beanform;

 import net.sf.beanform.prop.BeanProperty;

 import org.apache.hivemind.ApplicationRuntimeException;

 import org.apache.tapestry.IRequestCycle;

 import org.apache.tapestry.components.Block;

 import org.apache.tapestry.form.IFormComponent;

 /**

  * Superclass for low level BeanForm components which must be wrapped by

  * a {@link BeanFormRows} component.

  *

  * @see BeanFormLabel

  * @see BeanFormField

  *

  * @author Daniel Gredler

  */

 public abstract class BeanFormRowComponent extends BeanFormComponent {

     public Object getBean() {

         return this.getBeanFormRows().getBeanForm().getBeanSafely();

     }

     public BeanProperty getProperty() {

         return this.getBeanFormRows().getProperty();

     }

     public String getDisplayName() {

         String name = this.getProperty().getName();

         return this.getPage().getMessages().getMessage( name );

     }

     protected void addExtraBindings( IFormComponent field ) {

         this.getBeanFormRows().addExtraBindings( field );

     }

     private BeanFormRows getBeanFormRows() {

         IRequestCycle cycle = this.getPage().getRequestCycle();

         BeanFormRows rows = (BeanFormRows) cycle.getAttribute( BeanFormRows.BEAN_FORM_ROWS_ATTRIBUTE );

         if( rows == null ) throw new ApplicationRuntimeException( BeanFormMessages.noBeanFormRows( this ) );

         return rows;

     }

     public Block getCustomFieldBlock() {

         return this.getCustomFieldBlock( this.getProperty() );

     }

     public IFormComponent getCustomField() {

         return this.getCustomField( this.getProperty() );

     }

 }