logic: Moved update check setting to preferences and enable automatic update check by default

src/lib_gui/qt/element/QtUpdateCheckerWidget.cpp

@@ -0,0 +1,94 @@
+#include "qt/element/QtUpdateCheckerWidget.h"
+
+#include <QDesktopServices>
+#include <QHBoxLayout>
+#include <QPushButton>
+#include <QUrl>
+
+#include "qt/network/QtUpdateChecker.h"
+#include "settings/ApplicationSettings.h"
+#include "utility/TimeStamp.h"
+
+QtUpdateCheckerWidget::QtUpdateCheckerWidget(QWidget* parent)
+	: QWidget(parent)
+{
+	ApplicationSettings* appSettings = ApplicationSettings::getInstance().get();
+
+	QHBoxLayout* layout = new QHBoxLayout(this);
+	layout->setContentsMargins(0, 0, 0, 0);
+	layout->setSpacing(0);
+
+	m_button = new QPushButton("check for new version");
+	m_button->setObjectName("updateButton");
+	m_button->setCursor(Qt::PointingHandCursor);
+	layout->addWidget(m_button);
+
+	if (appSettings->getAutomaticUpdateCheck())
+	{
+		if (QtUpdateChecker::needsAutomaticCheck())
+		{
+			checkUpdate(false);
+		}
+		else
+		{
+			QString url = QString::fromStdString(appSettings->getUpdateDownloadUrl());
+			if (!url.isEmpty())
+			{
+				setDownloadUrl(url);
+			}
+			else
+			{
+				m_button->setText("up-to-date");
+				m_button->setEnabled(false);
+			}
+		}
+	}
+	else
+	{
+		connect(m_button, &QPushButton::clicked, [this](){ checkUpdate(true); });
+	}
+}
+
+void QtUpdateCheckerWidget::checkUpdate(bool force)
+{
+	ApplicationSettings* appSettings = ApplicationSettings::getInstance().get();
+	appSettings->setUpdateDownloadUrl("");
+	appSettings->save();
+
+	m_button->setText("checking for update...");
+	m_button->setEnabled(false);
+
+	QtUpdateChecker::check(force,
+		[this, appSettings](QtUpdateChecker::Result result)
+		{
+			if (!result.success)
+			{
+				m_button->setText("update check failed");
+			}
+			else if (result.url.isEmpty())
+			{
+				m_button->setText("up-to-date");
+			}
+			else
+			{
+				setDownloadUrl(result.url);
+
+				appSettings->setUpdateDownloadUrl(result.url.toStdString());
+				appSettings->save();
+			}
+		}
+	);
+}
+
+void QtUpdateCheckerWidget::setDownloadUrl(QString url)
+{
+	m_button->setText("new version available");
+	m_button->disconnect();
+	connect(m_button, &QPushButton::clicked, this,
+		[url]()
+		{
+			QDesktopServices::openUrl(QUrl(url, QUrl::TolerantMode));
+		}
+	);
+	m_button->setEnabled(true);
+}