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/*
* Copyright 2000-2022 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.components.grid;
import java.io.Serializable;
import java.util.Collection;
import com.vaadin.data.provider.DataProvider;
import com.vaadin.shared.ui.dnd.DropEffect;
/**
* A handler for target grid data provider updater for {@link GridRowDragger}.
*
* Used to handle updates to the target grid's {@link DataProvider} after a
* drop.
*
* @author Vaadin Ltd
* @since 8.2
*
* @param <T>
* the bean type
*/
@FunctionalInterface
public interface TargetDataProviderUpdater<T> extends Serializable {
/**
* Called when items have been dropped on the target Grid.
*
* @param dropEffect
* the reported drop effect from the drop event
* @param dataProvider
* the target grid data provider
* @param index
* the target index, {@link Integer#MAX_VALUE} is used for
* dropping things always to the end of the grid without having
* to fetch the size of the data provider
* @param items
* items to be added.
*/
public void onDrop(DropEffect dropEffect, DataProvider<T, ?> dataProvider,
int index, Collection<T> items);
}
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