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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.v7.event;
-
- import java.io.Serializable;
- import java.util.Collection;
- import java.util.Collections;
- import java.util.EventObject;
- import java.util.LinkedHashSet;
- import java.util.Set;
-
- /**
- * An event that specifies what in a selection has changed, and where the
- * selection took place.
- *
- * @since 7.4
- * @author Vaadin Ltd
- */
- @Deprecated
- public class SelectionEvent extends EventObject {
-
- private LinkedHashSet<Object> oldSelection;
- private LinkedHashSet<Object> newSelection;
-
- public SelectionEvent(Object source, Collection<Object> oldSelection,
- Collection<Object> newSelection) {
- super(source);
- this.oldSelection = new LinkedHashSet<Object>(oldSelection);
- this.newSelection = new LinkedHashSet<Object>(newSelection);
- }
-
- /**
- * A {@link Collection} of all the itemIds that became selected.
- * <p>
- * <em>Note:</em> this excludes all itemIds that might have been previously
- * selected.
- *
- * @return a Collection of the itemIds that became selected
- */
- public Set<Object> getAdded() {
- return setDifference(newSelection, oldSelection);
- }
-
- /**
- * A {@link Collection} of all the itemIds that became deselected.
- * <p>
- * <em>Note:</em> this excludes all itemIds that might have been previously
- * deselected.
- *
- * @return a Collection of the itemIds that became deselected
- */
- public Set<Object> getRemoved() {
- return setDifference(oldSelection, newSelection);
- }
-
- /**
- * Slightly optimized set difference that can return the original set or a
- * modified one.
- *
- * @param set1
- * original set
- * @param set2
- * the set to subtract
- * @return the difference set
- */
- private static <T> Set<T> setDifference(Set<T> set1, Set<T> set2) {
- if (set2.isEmpty()) {
- return set1;
- } else {
- LinkedHashSet<T> set = new LinkedHashSet<T>(set1);
- set.removeAll(set2);
- return set;
- }
- }
-
- /**
- * A {@link Collection} of all the itemIds that are currently selected.
- *
- * @return a Collection of the itemIds that are currently selected
- */
- public Set<Object> getSelected() {
- return Collections.unmodifiableSet(newSelection);
- }
-
- /**
- * The listener interface for receiving {@link SelectionEvent
- * SelectionEvents}.
- */
- @Deprecated
- public interface SelectionListener extends Serializable {
- /**
- * Notifies the listener that the selection state has changed.
- *
- * @param event
- * the selection change event
- */
- void select(SelectionEvent event);
- }
-
- /**
- * The interface for adding and removing listeners for {@link SelectionEvent
- * SelectionEvents}.
- */
- @Deprecated
- public interface SelectionNotifier extends Serializable {
- /**
- * Registers a new selection listener
- *
- * @param listener
- * the listener to register
- */
- void addSelectionListener(SelectionListener listener);
-
- /**
- * Removes a previously registered selection change listener
- *
- * @param listener
- * the listener to remove
- */
- void removeSelectionListener(SelectionListener listener);
- }
- }
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