Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

git-subtree-dir: meshmc
git-subtree-mainline: 934382c8a1ce738589dee9ee0f14e1cec812770e
git-subtree-split: fad6a1066616b69d7f5fef01178efdf014c59537

1 files changed, 96 insertions, 0 deletions

diff --git a/meshmc/launcher/launch/steps/Update.cpp b/meshmc/launcher/launch/steps/Update.cpp
new file mode 100644
index 0000000000..f1efc8db51
--- /dev/null
+++ b/meshmc/launcher/launch/steps/Update.cpp
@@ -0,0 +1,96 @@
+/* SPDX-FileCopyrightText: 2026 Project Tick
+ * SPDX-FileContributor: Project Tick
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *   MeshMC - A Custom Launcher for Minecraft
+ *   Copyright (C) 2026 Project Tick
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ *  This file incorporates work covered by the following copyright and
+ *  permission notice:
+ *
+ * Copyright 2013-2021 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Update.h"
+#include <launch/LaunchTask.h>
+
+void Update::executeTask()
+{
+	if (m_aborted) {
+		emitFailed(tr("Task aborted."));
+		return;
+	}
+	m_updateTask.reset(m_parent->instance()->createUpdateTask(m_mode));
+	if (m_updateTask) {
+		connect(m_updateTask.get(), SIGNAL(finished()), this,
+				SLOT(updateFinished()));
+		connect(m_updateTask.get(), &Task::progress, this, &Task::setProgress);
+		connect(m_updateTask.get(), &Task::status, this, &Task::setStatus);
+		emit progressReportingRequest();
+		return;
+	}
+	emitSucceeded();
+}
+
+void Update::proceed()
+{
+	m_updateTask->start();
+}
+
+void Update::updateFinished()
+{
+	if (m_updateTask->wasSuccessful()) {
+		emitSucceeded();
+		m_updateTask.reset();
+	} else {
+		QString reason = tr("Instance update failed because: %1\n\n")
+							 .arg(m_updateTask->failReason());
+		emit logLine(reason, MessageLevel::Fatal);
+		emitFailed(reason);
+		m_updateTask.reset();
+	}
+}
+
+bool Update::canAbort() const
+{
+	if (m_updateTask) {
+		return m_updateTask->canAbort();
+	}
+	return true;
+}
+
+bool Update::abort()
+{
+	m_aborted = true;
+	if (m_updateTask) {
+		if (m_updateTask->canAbort()) {
+			return m_updateTask->abort();
+		}
+	}
+	return true;
+}