updatescheckwidget.cpp

/*
 *  Copyright (c) 2020 Jeremy HU <jeremy-at-dust3d dot org>. All rights reserved. 
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:

 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.

 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 */
#include <QVBoxLayout>
#include <QProgressBar>
#include <QDesktopServices>
#include "updatescheckwidget.h"
#include "util.h"
#include "updateschecker.h"

#define CHECKING_WIDGET_INDEX           0
#define SHOWING_RESULT_WIDGET_INDEX     1

UpdatesCheckWidget::UpdatesCheckWidget()
{
    setWindowTitle(unifiedWindowTitle(tr("Check for Updates")));
    
    m_stackedWidget = new QStackedWidget;
    
    QVBoxLayout *mainLayout = new QVBoxLayout;
    mainLayout->addWidget(m_stackedWidget);
    
    QWidget *checkingWidget = new QWidget;
    QWidget *showingResultWidget = new QWidget;
    
    ////////// checking ///////////////////
    
    QLabel *busyLabel = new QLabel;
    busyLabel->setText(tr("Checking for updates..."));
    
    QProgressBar *busyBar = new QProgressBar;
    busyBar->setMaximum(0);
    busyBar->setMinimum(0);
    busyBar->setValue(0);
    
    QVBoxLayout *checkingLayout = new QVBoxLayout;
    checkingLayout->addWidget(busyLabel);
    checkingLayout->addWidget(busyBar);
    
    checkingWidget->setLayout(checkingLayout);
    
    ////////// showing result /////////////
    
    m_infoLabel = new QLabel;
    
    m_viewButton = new QPushButton(tr("View"));
    m_viewButton->hide();
    
    connect(m_viewButton, &QPushButton::clicked, this, &UpdatesCheckWidget::viewUpdates);
    
    QVBoxLayout *showingResultLayout = new QVBoxLayout;
    showingResultLayout->addWidget(m_infoLabel);
    showingResultLayout->addStretch();
    showingResultLayout->addWidget(m_viewButton);
    
    showingResultWidget->setLayout(showingResultLayout);
    
    m_stackedWidget->addWidget(checkingWidget);
    m_stackedWidget->addWidget(showingResultWidget);
    
    m_stackedWidget->setCurrentIndex(CHECKING_WIDGET_INDEX);
    
    setLayout(mainLayout);
}

UpdatesCheckWidget::~UpdatesCheckWidget()
{
    delete m_updatesChecker;
}

void UpdatesCheckWidget::viewUpdates()
{
    if (m_viewUrl.isEmpty())
        return;
    
    QDesktopServices::openUrl(QUrl(m_viewUrl));
}

void UpdatesCheckWidget::check()
{
    if (nullptr != m_updatesChecker)
        return;
    
    m_stackedWidget->setCurrentIndex(CHECKING_WIDGET_INDEX);
    
    m_viewUrl.clear();
    
    m_updatesChecker = new UpdatesChecker;
    connect(m_updatesChecker, &UpdatesChecker::finished, this, &UpdatesCheckWidget::checkFinished);
    m_updatesChecker->start();
}

void UpdatesCheckWidget::checkFinished()
{
    m_infoLabel->setText(m_updatesChecker->message());
    if (m_updatesChecker->hasError()) {
        m_viewButton->hide();
    } else {
        if (m_updatesChecker->isLatest()) {
            m_viewButton->hide();
        } else {
            m_viewUrl = m_updatesChecker->matchedUpdateItem().descriptionUrl;
            m_viewButton->show();
        }
    }
    m_stackedWidget->setCurrentIndex(SHOWING_RESULT_WIDGET_INDEX);
    
    m_updatesChecker->deleteLater();
    m_updatesChecker = nullptr;
}