/*
 * 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.shared.*;

/**
 * Logical event fired when the number of rows changes.
 */
public class RowCountChangeEvent extends AbstractEvent {
    /**
     * Event Key for {@link RowCountChangeEvent}.
     */
    public static final Type<RowCountChangeEvent, RowCountChangeHandler> TYPE = new Type<RowCountChangeEvent, RowCountChangeHandler>() {
        @Override
        protected void fire( RowCountChangeHandler handler, RowCountChangeEvent event ) {
            handler.onRowCountChange( event );
        }
    };

    /**
     * The new row count.
     */
    private int newRowCount;

    /**
     * The previous row count.
     */
    private int oldRowCount;

    /**
     * Construct a new {@link RowCountChangeEvent}.
     *
     * @param oldRowCount the previous page
     * @param newRowCount the page that was requested
     */
    public RowCountChangeEvent( int oldRowCount, int newRowCount ) {
        this.oldRowCount = oldRowCount;
        this.newRowCount = newRowCount;
    }

    /**
     * @return the new row count
     */
    public int getNewRowCount() {
        return newRowCount;
    }

    /**
     * @return the old row count
     */
    public int getOldRowCount() {
        return oldRowCount;
    }

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