qt5base-lts/examples/widgets/itemviews/fetchmore/window.cpp

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "filelistmodel.h"
#include "window.h"

#include <QtWidgets>

Window::Window(QWidget *parent)
    : QWidget(parent)
{
    FileListModel *model = new FileListModel(this);
    model->setDirPath(QLibraryInfo::location(QLibraryInfo::PrefixPath));

    QLabel *label = new QLabel(tr("&Directory:"));
    QLineEdit *lineEdit = new QLineEdit;
    label->setBuddy(lineEdit);

    QListView *view = new QListView;
    view->setModel(model);

    logViewer = new QTextBrowser;
    logViewer->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred));

    connect(lineEdit, &QLineEdit::textChanged,
            model, &FileListModel::setDirPath);
    connect(lineEdit, &QLineEdit::textChanged,
            logViewer, &QTextEdit::clear);
    connect(model, &FileListModel::numberPopulated,
            this, &Window::updateLog);

    QGridLayout *layout = new QGridLayout;
    layout->addWidget(label, 0, 0);
    layout->addWidget(lineEdit, 0, 1);
    layout->addWidget(view, 1, 0, 1, 2);
    layout->addWidget(logViewer, 2, 0, 1, 2);

    setLayout(layout);
    setWindowTitle(tr("Fetch More Example"));
}

void Window::updateLog(int number)
{
    logViewer->append(tr("%1 items added.").arg(number));
}