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/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Qt Software Information (qt-info@nokia.com) ** ** This file is part of the example classes of the Qt Toolkit. ** ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the either Technology Preview License Agreement or the ** Beta Release License Agreement. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License versions 2.0 or 3.0 as published by the Free ** Software Foundation and appearing in the file LICENSE.GPL included in ** the packaging of this file. Please review the following information ** to ensure GNU General Public Licensing requirements will be met: ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special ** exception, Nokia gives you certain additional rights. These rights ** are described in the Nokia Qt GPL Exception version 1.3, included in ** the file GPL_EXCEPTION.txt in this package. ** ** Qt for Windows(R) Licensees ** As a special exception, Nokia, as the sole copyright holder for Qt ** Designer, grants users of the Qt/Eclipse Integration plug-in the ** right for the Qt/Eclipse Integration to link to functionality ** provided by Qt Designer and its related libraries. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at qt-sales@nokia.com. ** ****************************************************************************/ #include "filelistmodel.h" #include <QApplication> #include <QPalette> #include <QBrush> #include <QDir> FileListModel::FileListModel(QObject *parent) : QAbstractListModel(parent) { } int FileListModel::rowCount(const QModelIndex & /* parent */) const { return fileCount; } QVariant FileListModel::data(const QModelIndex &index, int role) const { if (!index.isValid()) return QVariant(); if (index.row() >= fileList.size() || index.row() < 0) return QVariant(); if (role == Qt::DisplayRole) return fileList.at(index.row()); else if (role == Qt::BackgroundRole) { int batch = (index.row() / 100) % 2; if (batch == 0) return qApp->palette().base(); else return qApp->palette().alternateBase(); } return QVariant(); } bool FileListModel::canFetchMore(const QModelIndex & /* index */) const { if (fileCount < fileList.size()) return true; else return false; } void FileListModel::fetchMore(const QModelIndex & /* index */) { int remainder = fileList.size() - fileCount; int itemsToFetch = qMin(100, remainder); beginInsertRows(QModelIndex(), fileCount, fileCount+itemsToFetch); fileCount += itemsToFetch; endInsertRows(); emit numberPopulated(itemsToFetch); } void FileListModel::setDirPath(const QString &path) { QDir dir(path); fileList = dir.entryList(); fileCount = 0; reset(); }
Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) | Trademarks | Qt 4.5.0-rc1 |