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/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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 com.vaadin.ui.declarative;
import java.io.Serializable;
import com.vaadin.ui.Component;
/**
* Delegate used by {@link DesignContext} to determine whether container data
* should be written out for a component.
*
* @see DesignContext#shouldWriteData(Component)
*
* @since 7.5.0
* @author Vaadin Ltd
*/
public interface ShouldWriteDataDelegate extends Serializable {
/**
* The default delegate implementation that assumes that all component data
* is provided by a data source connected to a back end system and that the
* data should thus not be written.
*/
public static final ShouldWriteDataDelegate DEFAULT = new ShouldWriteDataDelegate() {
@Override
public boolean shouldWriteData(Component component) {
return false;
}
};
/**
* Determines whether the container data of a component should be written
* out.
*
* @param component
* the component to check
* @return <code>true</code> if container data should be written out for the
* provided component; otherwise <code>false</code>.
*/
boolean shouldWriteData(Component component);
}
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