/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Components project.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * 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.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) 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
** OWNER 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."
** $QT_END_LICENSE$
**
****************************************************************************/

import QtQuick 1.1
import "SectionScroller.js" as Sections
import "." 1.1

Item {
    id: root

    property ListView listView
    property bool platformInverted: false

    onListViewChanged: {
        if (listView && listView.model)
            internal.initDirtyObserver();
    }

    Connections {
        target: listView
        onModelChanged: {
            if (listView && listView.model)
                internal.initDirtyObserver();
        }
    }

    ScrollBar {
        id: scrollBar
        parent: listView
        flickableItem: listView
        privateSectionScroller: true
        platformInverted: root.platformInverted
        anchors {
            top: parent ? parent.top : undefined
            right: parent ? parent.right : undefined
        }
    }

    QtObject {
        id: internal

        function initDirtyObserver() {
            Sections.initSectionData(listView);
            function dirtyObserver() {
                if (!internal.modelDirty) {
                    internal.modelDirty = true;
                    dirtyTimer.running = true;
                }
            }

            if (listView.model.countChanged)
                listView.model.countChanged.connect(dirtyObserver);

            if (listView.model.itemsChanged)
                listView.model.itemsChanged.connect(dirtyObserver);

            if (listView.model.itemsInserted)
                listView.model.itemsInserted.connect(dirtyObserver);

            if (listView.model.itemsMoved)
                listView.model.itemsMoved.connect(dirtyObserver);

            if (listView.model.itemsRemoved)
                listView.model.itemsRemoved.connect(dirtyObserver);
        }
    }
}