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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.components.grid;
-
- import java.util.Collections;
- import java.util.List;
-
- import com.vaadin.shared.ui.dnd.EffectAllowed;
- import com.vaadin.ui.Grid;
- import com.vaadin.ui.dnd.event.DragStartEvent;
-
- /**
- * Drag start event on an HTML5 drag source {@link Grid} row.
- *
- * @param <T>
- * The Grid bean type.
- * @author Vaadin Ltd.
- * @see GridDragSource#addGridDragStartListener(GridDragStartListener)
- * @since 8.1
- */
- public class GridDragStartEvent<T> extends DragStartEvent<Grid<T>> {
-
- private final List<T> draggedItems;
-
- /**
- * Creates a drag start event.
- *
- * @param source
- * The source grid where the rows are being dragged from.
- * @param effectAllowed
- * Allowed effect from {@code DataTransfer.effectAllowed} object.
- * @param draggedItems
- * Set of items being dragged.
- */
- public GridDragStartEvent(Grid<T> source, EffectAllowed effectAllowed,
- List<T> draggedItems) {
- super(source, effectAllowed);
-
- this.draggedItems = draggedItems;
- }
-
- /**
- * Get the dragged row items.
- * <p>
- * The ordering of the list is the following: first the item that the drag
- * started from, optionally followed by all the other selected rows in
- * first-to-last order on the client side.
- *
- * @return an unmodifiable list of items that are being dragged.
- */
- public List<T> getDraggedItems() {
- return Collections.unmodifiableList(draggedItems);
- }
- }
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