2393a40ccd
- Start in root folder so that large directories (/bin/, Windows) are easily reachable - Remove the line edit and navigate by double clicking instead since this is more in line with expectations - Use a QPlainTextEdit for logging - Make the log message more informative - Add icons Change-Id: Ia3cd7fc143efef80772923291f0b711913aa47be Reviewed-by: Paul Wicking <paul.wicking@qt.io>
143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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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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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** 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 The Qt Company Ltd nor the names of its
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** 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 <QGuiApplication>
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#include <QDir>
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#include <QPalette>
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static const int batchSize = 100;
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FileListModel::FileListModel(QObject *parent)
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: QAbstractListModel(parent)
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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 parent.isValid() ? 0 : 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 {};
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const int row = index.row();
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if (row >= fileList.size() || row < 0)
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return {};
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switch (role) {
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case Qt::DisplayRole:
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return fileList.at(row).fileName();
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case Qt::BackgroundRole: {
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const int batch = row / batchSize;
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const QPalette &palette = QGuiApplication::palette();
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return (batch % 2) != 0 ? palette.alternateBase() : palette.base();
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}
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case Qt::DecorationRole:
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return iconProvider.icon(fileList.at(row));
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}
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return {};
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}
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//![4]
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QFileInfo FileListModel::fileInfoAt(const QModelIndex &index) const
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{
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return fileList.at(index.row());
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}
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//![1]
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bool FileListModel::canFetchMore(const QModelIndex &parent) const
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{
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if (parent.isValid())
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return false;
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return (fileCount < fileList.size());
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}
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//![1]
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//![2]
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void FileListModel::fetchMore(const QModelIndex &parent)
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{
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if (parent.isValid())
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return;
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const int start = fileCount;
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const int remainder = int(fileList.size()) - start;
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const int itemsToFetch = qMin(batchSize, remainder);
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if (itemsToFetch <= 0)
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return;
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beginInsertRows(QModelIndex(), start, start + itemsToFetch - 1);
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fileCount += itemsToFetch;
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endInsertRows();
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emit numberPopulated(path, start, itemsToFetch, int(fileList.size()));
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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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this->path = path;
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fileList = dir.entryInfoList(QDir::NoDot | QDir::AllEntries, QDir::Name);
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fileCount = 0;
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endResetModel();
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}
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//![0]
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