// 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 java.util.List;

 import net.sf.beanform.prop.BeanProperty;

 import net.sf.beanform.validator.CachingValidatorFactory;

 import org.apache.hivemind.ApplicationRuntimeException;

 import org.apache.tapestry.IComponent;

 import org.apache.tapestry.form.IPropertySelectionModel;

 import org.apache.tapestry.form.validator.Validator;

 /**

  * A low level BeanForm component that renders fields for all the properties.

  * This component must be wrapped by a {@link BeanFormRows} component.

  *

  * @author Daniel Gredler

  */

 public abstract class BeanFormField extends BeanFormRowComponent {

     public final static String PROPERTYSELECTION_FIELD_ID = "propertySelection";

     public final static String TEXTFIELD_FIELD_ID = "textField";

     public final static String TEXTAREA_FIELD_ID = "textArea";

     public final static String CHECKBOX_FIELD_ID = "checkbox";

     public final static String DATEPICKER_FIELD_ID = "datePicker";

     public final static String UPLOAD_FIELD_ID = "upload";

     public final static String INSERT_FIELD_ID = "insert";

     final static String PROPERTYSELECTION_BLOCK_ID = "propertySelectionBlock";

     final static String CUSTOM_BLOCK_ID = "customBlock";

     final static String TEXTFIELD_BLOCK_ID = "textFieldBlock";

     final static String TEXTAREA_BLOCK_ID = "textAreaBlock";

     final static String CHECKBOX_BLOCK_ID = "checkboxBlock";

     final static String DATEPICKER_BLOCK_ID = "datePickerBlock";

     final static String UPLOAD_BLOCK_ID = "uploadBlock";

     final static String INSERT_BLOCK_ID = "insertBlock";

     public abstract CachingValidatorFactory getValidatorFactory();

     public IComponent getFieldBlock() {

         BeanProperty property = this.getProperty();

         if( this.hasPropertySelectionModel( property, true ) ) return this.getComponent( PROPERTYSELECTION_BLOCK_ID );

         else if( this.hasCustomField( property ) ) return this.getComponent( CUSTOM_BLOCK_ID );

         else if( property.usesTextField() ) return this.getComponent( TEXTFIELD_BLOCK_ID );

         else if( property.usesTextArea() ) return this.getComponent( TEXTAREA_BLOCK_ID );

         else if( property.usesCheckbox() ) return this.getComponent( CHECKBOX_BLOCK_ID );

         else if( property.usesDatePicker() ) return this.getComponent( DATEPICKER_BLOCK_ID );

         else if( property.usesUpload() ) return this.getComponent( UPLOAD_BLOCK_ID );

         else if( property.usesInsert() ) return this.getComponent( INSERT_BLOCK_ID );

         else {

             String msg = BeanFormMessages.cantFindFieldForProperty( property );

             throw new ApplicationRuntimeException( msg );

         }

     }

     public String getFieldId() {

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

         id = id.replace( '.', '_' );

         return id;

     }

     public Object getValue() {

         BeanProperty property = this.getProperty();

         if( property.isReadable() == false ) return null;

         property.setBean( this.getBean() );

         return property.getValue();

     }

     public void setValue( Object value ) {

         BeanProperty property = this.getProperty();

         property.setBean( this.getBean() );

         property.setValue( value );

     }

     public boolean getDisabled() {

         return ( this.getProperty().isWriteable() == false );

     }

     public List<Validator> getValidators() {

         BeanProperty property = this.getProperty();

         CachingValidatorFactory factory = this.getValidatorFactory();

         List<Validator> validators = factory.constructValidatorList( this, property );

         return validators;

     }

     public IPropertySelectionModel getPropertySelectionModel() {

         BeanProperty property = this.getProperty();

         return this.getPropertySelectionModel( property, true );

     }

 }