com.google.gwt.gen2.table.event.client.RowSelectionEvent.java Source code

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Here is the source code for com.google.gwt.gen2.table.event.client.RowSelectionEvent.java

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/*
 * Copyright 2008 Google Inc.
 * 
 * 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.google.gwt.gen2.table.event.client;

import com.google.gwt.gen2.event.logical.shared.SelectionEvent;
import com.google.gwt.gen2.table.event.client.TableEvent.Row;

import java.util.Set;
import java.util.TreeSet;

/**
 * Logical event fired when a cell is highlighted.
 */
public class RowSelectionEvent extends SelectionEvent<Set<Row>> {
    /**
     * Event Key for {@link RowSelectionEvent}.
     */
    public static final Type<RowSelectionEvent, RowSelectionHandler> TYPE = new Type<RowSelectionEvent, RowSelectionHandler>() {
        @Override
        protected void fire(RowSelectionHandler handler, RowSelectionEvent event) {
            handler.onRowSelection(event);
        }
    };

    /**
     * Construct a new {@link RowSelectionEvent}.
     * 
     * @param oldList the set of rows that were previously selected
     * @param newList the set of rows that are now selected
     */
    public RowSelectionEvent(Set<Row> oldList, Set<Row> newList) {
        super(oldList, newList);
    }

    /**
     * @return the newly deselected rows
     */
    public Set<Row> getDeselectedRows() {
        Set<Row> deselected = new TreeSet<Row>();
        Set<Row> oldList = getOldValue();
        Set<Row> newList = getNewValue();
        for (Row row : oldList) {
            if (!newList.contains(row)) {
                deselected.add(row);
            }
        }
        return deselected;
    }

    /**
     * @return the newly selected rows
     */
    public Set<Row> getSelectedRows() {
        Set<Row> selected = new TreeSet<Row>();
        Set<Row> oldList = getOldValue();
        Set<Row> newList = getNewValue();
        for (Row row : newList) {
            if (!oldList.contains(row)) {
                selected.add(row);
            }
        }
        return selected;
    }

    @Override
    protected Type getType() {
        return TYPE;
    }
}