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- /*
- * Copyright 2000-2016 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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