GH-1053 explode launch task into many small steps, each a Task

1 files changed, 72 insertions, 0 deletions

diff --git a/logic/launch/steps/PreLaunchCommand.cpp b/logic/launch/steps/PreLaunchCommand.cpp
new file mode 100644
index 00000000..5d5862d8
--- /dev/null
+++ b/logic/launch/steps/PreLaunchCommand.cpp
@@ -0,0 +1,72 @@
+/* Copyright 2013-2015 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 "PreLaunchCommand.h"
+#include <launch/LaunchTask.h>
+
+PreLaunchCommand::PreLaunchCommand(LaunchTask *parent) : LaunchStep(parent)
+{
+	auto instance = m_parent->instance();
+	m_command = instance->getPreLaunchCommand();
+	m_process.setProcessEnvironment(instance->createEnvironment());
+	connect(&m_process, &LoggedProcess::log, this, &PreLaunchCommand::logLines);
+	connect(&m_process, &LoggedProcess::stateChanged, this, &PreLaunchCommand::on_state);
+}
+
+void PreLaunchCommand::executeTask()
+{
+	//FIXME: where to put this?
+	QString prelaunch_cmd = m_parent->substituteVariables(m_command);
+	emit logLine(tr("Running Pre-Launch command: %1").arg(prelaunch_cmd), MessageLevel::MultiMC);
+	m_process.start(prelaunch_cmd);
+}
+
+void PreLaunchCommand::on_state(LoggedProcess::State state)
+{
+	switch(state)
+	{
+		case LoggedProcess::Aborted:
+		case LoggedProcess::Crashed:
+		case LoggedProcess::FailedToStart:
+		{
+			QString error = tr("Pre-Launch command failed with code %1.\n\n").arg(m_process.exitCode());
+			emit logLine(error, MessageLevel::Fatal);
+			emitFailed(error);
+			return;
+		}
+		case LoggedProcess::Finished:
+		{
+			emit logLine(tr("Pre-Launch command ran successfully.\n\n"), MessageLevel::MultiMC);
+			emitSucceeded();
+		}
+		default:
+			break;
+	}
+}
+
+void PreLaunchCommand::setWorkingDirectory(const QString &wd)
+{
+	m_process.setWorkingDirectory(wd);
+}
+
+bool PreLaunchCommand::abort()
+{
+	auto state = m_process.state();
+	if (state == LoggedProcess::Running || state == LoggedProcess::Starting)
+	{
+		m_process.kill();
+	}
+	return true;
+}