org.jdal.vaadin.data.BeanWrapperItem.java Source code

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Here is the source code for org.jdal.vaadin.data.BeanWrapperItem.java

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/*
 * Copyright 2009-2015 Jose Luis Martin
 *
 * 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 org.jdal.vaadin.data;

import java.beans.PropertyDescriptor;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.PropertyAccessorFactory;

import com.vaadin.data.Item;
import com.vaadin.data.Property;

/**
 * An adapter to use beans as {@link Item Items} delegating work to 
 * Spring {@link BeanWrapper}
 * 
 * @author Jose Luis Martin
 * @since 2.1
 */
public class BeanWrapperItem implements Item {

    private List<String> properties = new ArrayList<String>();
    private BeanWrapper beanWrapper;

    public BeanWrapperItem(Object bean) {
        this(bean, null);
    }

    public BeanWrapperItem(Object bean, List<String> properties) {
        this.beanWrapper = PropertyAccessorFactory.forBeanPropertyAccess(bean);

        if (properties == null) {
            for (PropertyDescriptor pd : BeanUtils.getPropertyDescriptors(bean.getClass()))
                this.properties.add(pd.getName());
        } else {
            this.properties = properties;
        }

    }

    @Override
    @SuppressWarnings("rawtypes")
    public Property getItemProperty(Object id) {
        return new BeanWrapperProperty(this.beanWrapper, (String) id);
    }

    @Override
    public Collection<?> getItemPropertyIds() {
        return this.properties;
    }

    @Override
    @SuppressWarnings("rawtypes")
    public boolean addItemProperty(Object id, Property property) throws UnsupportedOperationException {
        this.properties.add((String) id);

        return true;
    }

    @Override
    public boolean removeItemProperty(Object id) throws UnsupportedOperationException {
        return this.properties.remove((String) id);
    }

    public Object getBean() {
        return this.beanWrapper.getWrappedInstance();
    }

}