/*
 * Cantata
 *
 * Copyright (c) 2011 Craig Drummond <craig.p.drummond@gmail.com>
 *
 * ----
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "treeview.h"
#include <QtGui/QMouseEvent>

TreeView::TreeView(QWidget *parent)
        : QTreeView(parent)
{
    setDragEnabled(true);
    setContextMenuPolicy(Qt::NoContextMenu);
}

TreeView::~TreeView()
{
}

void TreeView::setPageDefaults()
{
    sortByColumn(0, Qt::AscendingOrder);
    setHeaderHidden(true);
    setDragDropMode(QAbstractItemView::DragOnly);
    setSelectionMode(QAbstractItemView::ExtendedSelection);
    setAllColumnsShowFocus(true);
    setAlternatingRowColors(true);
    setSelectionBehavior(QAbstractItemView::SelectRows);
    setSortingEnabled(true);
}

void TreeView::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
{
    QTreeView::selectionChanged(selected, deselected);
    bool haveSelection=selectedIndexes().count();

    setContextMenuPolicy(haveSelection ? Qt::ActionsContextMenu : Qt::NoContextMenu);
    emit itemsSelected(haveSelection);
}

bool TreeView::haveSelectedItems() const
{
    return selectedIndexes().count()>0;
}

bool TreeView::haveUnSelectedItems() const
{
    return selectedIndexes().count()!=model()->rowCount();
}

void TreeView::mouseReleaseEvent(QMouseEvent *event)
{
    if (Qt::NoModifier==event->modifiers()) {
        QTreeView::mouseReleaseEvent(event);
    }
}