118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "filelistmodel.h"
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#include <QApplication>
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#include <QBrush>
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#include <QDir>
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#include <QPalette>
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FileListModel::FileListModel(QObject *parent)
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: QAbstractListModel(parent)
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{
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}
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//![4]
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int FileListModel::rowCount(const QModelIndex & /* parent */) const
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{
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return fileCount;
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}
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QVariant FileListModel::data(const QModelIndex &index, int role) const
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{
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if (!index.isValid())
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return QVariant();
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if (index.row() >= fileList.size() || index.row() < 0)
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return QVariant();
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if (role == Qt::DisplayRole) {
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return fileList.at(index.row());
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} else if (role == Qt::BackgroundRole) {
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int batch = (index.row() / 100) % 2;
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if (batch == 0)
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return qApp->palette().base();
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else
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return qApp->palette().alternateBase();
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}
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return QVariant();
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}
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//![4]
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//![1]
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bool FileListModel::canFetchMore(const QModelIndex & /* index */) const
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{
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if (fileCount < fileList.size())
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return true;
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else
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return false;
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}
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//![1]
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//![2]
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void FileListModel::fetchMore(const QModelIndex & /* index */)
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{
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int remainder = fileList.size() - fileCount;
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int itemsToFetch = qMin(100, remainder);
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beginInsertRows(QModelIndex(), fileCount, fileCount+itemsToFetch-1);
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fileCount += itemsToFetch;
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endInsertRows();
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emit numberPopulated(itemsToFetch);
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}
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//![2]
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//![0]
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void FileListModel::setDirPath(const QString &path)
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{
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QDir dir(path);
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beginResetModel();
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fileList = dir.entryList();
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fileCount = 0;
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endResetModel();
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}
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//![0]
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