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/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Qt Software Information ([email protected]) ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Nokia. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 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 the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at [email protected]. ** $QT_END_LICENSE$ ** ****************************************************************************/ #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 4.5.1 |