Android Open Source - RoboMVVM Scroll Event Arg

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License

The source code is released under:

Project RoboMVVM(https://github.com/debdattabasu/RoboMVVM) Copyright (c) 2014, Debdatta Basu All rights reserved. Redistribution and use in source and binary forms, with or without modification, are ...

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Java Source Code

/**
 * @project RoboMVVM//  w w w  .j  av a 2s .  c  om
 * @project RoboMVVM(https://github.com/debdattabasu/RoboMVVM)
 * @author Debdatta Basu
 *
 * @license 3-clause BSD license(http://opensource.org/licenses/BSD-3-Clause).
 *      Copyright (c) 2014, Debdatta Basu. All rights reserved.
 *
 *      Redistribution and use in source and binary forms, with or without modification, are permitted provided that
 *      the following conditions are met:
 *
 *          1. Redistributions of source code must retain the above copyright notice, this list of
 *             conditions and the following disclaimer.
 *
 *          2. Redistributions in binary form must reproduce the above copyright notice, this list of
 *             conditions and the following disclaimer in the documentation and/or other materials
 *             provided with the distribution.
 *
 *          3. Neither the name of the copyright holder nor the names of its contributors may be used
 *             to endorse or promote products derived from this software without specific prior
 *             written permission.
 *
 *      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 *      INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *      IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 *      OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 *      OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *      OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *      POSSIBILITY OF SUCH DAMAGE.
 */

package org.dbasu.robomvvm.componentadapter.listview;

import org.dbasu.robomvvm.componentmodel.EventArg;

/**
 * Raised by a {@link org.dbasu.robomvvm.componentadapter.listview.ListViewAdapter} to notify listeners of
 * a scroll.
 */
public class ScrollEventArg extends EventArg {

    private final int firstVisibleItem, visibleItemCount, totalItemCount;

    /**
     * Construct a ScrollEventArg
     * @param source
     *              The ListView that raises this event.
     * @param firstVisibleItem
     *              The index of the first visible cell.
     * @param visibleItemCount
     *              The number of visible cells.
     * @param totalItemCount
     *              The total number of cells in the list adapter.
     */
    public ScrollEventArg(ListViewAdapter source, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        super(source);
        this.firstVisibleItem = firstVisibleItem;
        this.visibleItemCount = visibleItemCount;
        this.totalItemCount = totalItemCount;
    }

    /**
     * Get the total number of cells in the list adapter.
     * @return
     *             The total number of cells in the list adapter.
     */
    public int getTotalItemCount() {
        return totalItemCount;
    }

    /**
     * Get the number of visible cells.
     * @return
     *              The number of visible cells.
     */
    public int getVisibleItemCount() {
        return visibleItemCount;
    }

    /**
     * Get the index of the first visible cell.
     * @return
     *              The index of the first visible cell. Ignore if visibleCount == 0.
     */
    public int getFirstVisibleItem() {
        return firstVisibleItem;
    }
}

Java Source Code List