Initial FTB support. Allows "tracking" of FTB instances.

11 files changed, 465 insertions, 67 deletions

diff --git a/logic/InstanceFactory.cpp b/logic/InstanceFactory.cpp
index 66b271d0..31a287dd 100644
--- a/logic/InstanceFactory.cpp
+++ b/logic/InstanceFactory.cpp
@@ -20,7 +20,9 @@
 
 #include "BaseInstance.h"
 #include "LegacyInstance.h"
+#include "LegacyFTBInstance.h"
 #include "OneSixInstance.h"
+#include "OneSixFTBInstance.h"
 #include "NostalgiaInstance.h"
 #include "BaseVersion.h"
 #include "MinecraftVersion.h"
@@ -60,6 +62,14 @@ InstanceFactory::InstLoadError InstanceFactory::loadInstance(BaseInstance *&inst
 	{
 		inst = new NostalgiaInstance(instDir, m_settings, this);
 	}
+	else if (inst_type == "LegacyFTB")
+	{
+		inst = new LegacyFTBInstance(instDir, m_settings, this);
+	}
+	else if (inst_type == "OneSixFTB")
+	{
+		inst = new OneSixFTBInstance(instDir, m_settings, this);
+	}
 	else
 	{
 		return InstanceFactory::UnknownLoadError;
@@ -69,7 +79,8 @@ InstanceFactory::InstLoadError InstanceFactory::loadInstance(BaseInstance *&inst
 
 InstanceFactory::InstCreateError InstanceFactory::createInstance(BaseInstance *&inst,
 																 BaseVersionPtr version,
-																 const QString &instDir)
+																 const QString &instDir,
+																 const InstType type)
 {
 	QDir rootDir(instDir);
 
@@ -85,32 +96,63 @@ InstanceFactory::InstCreateError InstanceFactory::createInstance(BaseInstance *&
 	auto m_settings = new INISettingsObject(PathCombine(instDir, "instance.cfg"));
 	m_settings->registerSetting(new Setting("InstanceType", "Legacy"));
 
-	switch (mcVer->type)
+	if (type == NormalInst)
 	{
-	case MinecraftVersion::Legacy:
-		m_settings->set("InstanceType", "Legacy");
-		inst = new LegacyInstance(instDir, m_settings, this);
-		inst->setIntendedVersionId(version->descriptor());
-		inst->setShouldUseCustomBaseJar(false);
-		break;
-	case MinecraftVersion::OneSix:
-		m_settings->set("InstanceType", "OneSix");
-		inst = new OneSixInstance(instDir, m_settings, this);
-		inst->setIntendedVersionId(version->descriptor());
-		inst->setShouldUseCustomBaseJar(false);
-		break;
-	case MinecraftVersion::Nostalgia:
-		m_settings->set("InstanceType", "Nostalgia");
-		inst = new NostalgiaInstance(instDir, m_settings, this);
-		inst->setIntendedVersionId(version->descriptor());
-		inst->setShouldUseCustomBaseJar(false);
-		break;
-	default:
+		switch (mcVer->type)
+		{
+		case MinecraftVersion::Legacy:
+			m_settings->set("InstanceType", "Legacy");
+			inst = new LegacyInstance(instDir, m_settings, this);
+			inst->setIntendedVersionId(version->descriptor());
+			inst->setShouldUseCustomBaseJar(false);
+			break;
+		case MinecraftVersion::OneSix:
+			m_settings->set("InstanceType", "OneSix");
+			inst = new OneSixInstance(instDir, m_settings, this);
+			inst->setIntendedVersionId(version->descriptor());
+			inst->setShouldUseCustomBaseJar(false);
+			break;
+		case MinecraftVersion::Nostalgia:
+			m_settings->set("InstanceType", "Nostalgia");
+			inst = new NostalgiaInstance(instDir, m_settings, this);
+			inst->setIntendedVersionId(version->descriptor());
+			inst->setShouldUseCustomBaseJar(false);
+			break;
+		default:
+		{
+			delete m_settings;
+			return InstanceFactory::NoSuchVersion;
+		}
+		}
+	}
+	else if (type == FTBInstance)
+	{
+		switch (mcVer->type)
+		{
+		case MinecraftVersion::Legacy:
+			m_settings->set("InstanceType", "LegacyFTB");
+			inst = new LegacyFTBInstance(instDir, m_settings, this);
+			inst->setIntendedVersionId(version->descriptor());
+			inst->setShouldUseCustomBaseJar(false);
+			break;
+		case MinecraftVersion::OneSix:
+			m_settings->set("InstanceType", "OneSixFTB");
+			inst = new OneSixFTBInstance(instDir, m_settings, this);
+			inst->setIntendedVersionId(version->descriptor());
+			inst->setShouldUseCustomBaseJar(false);
+			break;
+		default:
+		{
+			delete m_settings;
+			return InstanceFactory::NoSuchVersion;
+		}
+		}
+	}
+	else
 	{
 		delete m_settings;
 		return InstanceFactory::NoSuchVersion;
 	}
-	}
 
 	// FIXME: really, how do you even know?
 	return InstanceFactory::NoCreateError;
diff --git a/logic/InstanceFactory.h b/logic/InstanceFactory.h
index 01e5af7e..5ff4c7ec 100644
--- a/logic/InstanceFactory.h
+++ b/logic/InstanceFactory.h
@@ -55,18 +55,25 @@ public:
 		CantCreateDir
 	};
 
+	enum InstType
+	{
+		NormalInst,
+		FTBInstance
+	};
+
 	/*!
 	 * \brief Creates a stub instance
 	 *
 	 * \param inst Pointer to store the created instance in.
-	 * \param inst Game version to use for the instance
+	 * \param version Game version to use for the instance
 	 * \param instDir The new instance's directory.
+	 * \param type The type of instance to create
 	 * \return An InstCreateError error code.
 	 * - InstExists if the given instance directory is already an instance.
 	 * - CantCreateDir if the given instance directory cannot be created.
 	 */
 	InstCreateError createInstance(BaseInstance *&inst, BaseVersionPtr version,
-								   const QString &instDir);
+								   const QString &instDir, const InstType type = NormalInst);
 
 	/*!
 	 * \brief Creates a copy of an existing instance with a new name
diff --git a/logic/LegacyFTBInstance.cpp b/logic/LegacyFTBInstance.cpp
new file mode 100644
index 00000000..84d5a900
--- /dev/null
+++ b/logic/LegacyFTBInstance.cpp
@@ -0,0 +1,16 @@
+#include "LegacyFTBInstance.h"
+
+LegacyFTBInstance::LegacyFTBInstance(const QString &rootDir, SettingsObject *settings, QObject *parent) :
+	LegacyInstance(rootDir, settings, parent)
+{
+}
+
+QString LegacyFTBInstance::getStatusbarDescription()
+{
+	return "Legacy FTB: " + intendedVersionId();
+}
+
+bool LegacyFTBInstance::menuActionEnabled(QString action_name) const
+{
+	return false;
+}
diff --git a/logic/LegacyFTBInstance.h b/logic/LegacyFTBInstance.h
new file mode 100644
index 00000000..2ae72797
--- /dev/null
+++ b/logic/LegacyFTBInstance.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#include "LegacyInstance.h"
+
+class LegacyFTBInstance : public LegacyInstance
+{
+	Q_OBJECT
+public:
+	explicit LegacyFTBInstance(const QString &rootDir, SettingsObject *settings,
+							   QObject *parent = 0);
+	virtual QString getStatusbarDescription();
+	virtual bool menuActionEnabled(QString action_name) const;
+};
diff --git a/logic/OneSixFTBInstance.cpp b/logic/OneSixFTBInstance.cpp
new file mode 100644
index 00000000..567004b9
--- /dev/null
+++ b/logic/OneSixFTBInstance.cpp
@@ -0,0 +1,111 @@
+#include "OneSixFTBInstance.h"
+
+#include "OneSixVersion.h"
+#include "OneSixLibrary.h"
+#include "tasks/SequentialTask.h"
+#include "ForgeInstaller.h"
+#include "lists/ForgeVersionList.h"
+#include "MultiMC.h"
+
+class OneSixFTBInstanceForge : public Task
+{
+	Q_OBJECT
+public:
+	explicit OneSixFTBInstanceForge(const QString &version, OneSixFTBInstance *inst, QObject *parent = 0) :
+		Task(parent), instance(inst), version("Forge " + version)
+	{
+	}
+
+	void executeTask()
+	{
+		for (int i = 0; i < MMC->forgelist()->count(); ++i)
+		{
+			if (MMC->forgelist()->at(i)->name() == version)
+			{
+				forgeVersion = std::dynamic_pointer_cast<ForgeVersion>(MMC->forgelist()->at(i));
+				break;
+			}
+		}
+		if (!forgeVersion)
+			return;
+		entry = MMC->metacache()->resolveEntry("minecraftforge", forgeVersion->filename);
+		if (entry->stale)
+		{
+			setStatus(tr("Downloading Forge..."));
+			fjob = new NetJob("Forge download");
+			fjob->addNetAction(CacheDownload::make(forgeVersion->installer_url, entry));
+			connect(fjob, &NetJob::failed, [this](){emitFailed(m_failReason);});
+			connect(fjob, &NetJob::succeeded, this, &OneSixFTBInstanceForge::installForge);
+			connect(fjob, &NetJob::progress, [this](qint64 c, qint64 total){ setProgress(100 * c / total); });
+			fjob->start();
+		}
+		else
+		{
+			installForge();
+		}
+	}
+
+private
+slots:
+	void installForge()
+	{
+		setStatus(tr("Installing Forge..."));
+		QString forgePath = entry->getFullPath();
+		ForgeInstaller forge(forgePath, forgeVersion->universal_url);
+		if (!instance->reloadFullVersion())
+		{
+			emitFailed(tr("Couldn't load the version config"));
+			return;
+		}
+		if (!forge.apply(instance->getFullVersion()))
+		{
+			emitFailed(tr("Couldn't install Forge"));
+			return;
+		}
+		emitSucceeded();
+	}
+
+private:
+	OneSixFTBInstance *instance;
+	QString version;
+	ForgeVersionPtr forgeVersion;
+	MetaEntryPtr entry;
+	NetJob *fjob;
+};
+
+OneSixFTBInstance::OneSixFTBInstance(const QString &rootDir, SettingsObject *settings, QObject *parent) :
+	OneSixInstance(rootDir, settings, parent)
+{
+	QFile f(QDir(minecraftRoot()).absoluteFilePath("pack.json"));
+	if (f.open(QFile::ReadOnly))
+	{
+		QString data = QString::fromUtf8(f.readAll());
+		QRegularExpressionMatch match = QRegularExpression("net.minecraftforge:minecraftforge:[\\.\\d]*").match(data);
+		m_forge.reset(new OneSixLibrary(match.captured()));
+		m_forge->finalize();
+	}
+}
+
+QString OneSixFTBInstance::getStatusbarDescription()
+{
+	return "OneSix FTB: " + intendedVersionId();
+}
+bool OneSixFTBInstance::menuActionEnabled(QString action_name) const
+{
+	return false;
+}
+
+std::shared_ptr<Task> OneSixFTBInstance::doUpdate(bool only_prepare)
+{
+	std::shared_ptr<SequentialTask> task;
+	task.reset(new SequentialTask(this));
+	if (!MMC->forgelist()->isLoaded())
+	{
+		task->addTask(std::shared_ptr<Task>(MMC->forgelist()->getLoadTask()));
+	}
+	task->addTask(OneSixInstance::doUpdate(only_prepare));
+	task->addTask(std::shared_ptr<Task>(new OneSixFTBInstanceForge(m_forge->version(), this, this)));
+	return task;
+}
+
+#include "OneSixFTBInstance.moc"
diff --git a/logic/OneSixFTBInstance.h b/logic/OneSixFTBInstance.h
new file mode 100644
index 00000000..7600090c
--- /dev/null
+++ b/logic/OneSixFTBInstance.h
@@ -0,0 +1,20 @@
+#pragma once
+
+#include "OneSixInstance.h"
+
+class OneSixLibrary;
+
+class OneSixFTBInstance : public OneSixInstance
+{
+	Q_OBJECT
+public:
+	explicit OneSixFTBInstance(const QString &rootDir, SettingsObject *settings,
+							QObject *parent = 0);
+	virtual QString getStatusbarDescription();
+	virtual bool menuActionEnabled(QString action_name) const;
+
+	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) override;
+
+private:
+	std::shared_ptr<OneSixLibrary> m_forge;
+};
diff --git a/logic/lists/ForgeVersionList.cpp b/logic/lists/ForgeVersionList.cpp
index b5e421af..d6d353da 100644
--- a/logic/lists/ForgeVersionList.cpp
+++ b/logic/lists/ForgeVersionList.cpp
@@ -159,6 +159,7 @@ ForgeListLoadTask::ForgeListLoadTask(ForgeVersionList *vlist) : Task()
 
 void ForgeListLoadTask::executeTask()
 {
+	setStatus(tr("Fetching Forge version list"));
 	auto job = new NetJob("Version index");
 	// we do not care if the version is stale or not.
 	auto forgeListEntry = MMC->metacache()->resolveEntry("minecraftforge", "list.json");
diff --git a/logic/lists/InstanceList.cpp b/logic/lists/InstanceList.cpp
index 15fd10ba..539413d8 100644
--- a/logic/lists/InstanceList.cpp
+++ b/logic/lists/InstanceList.cpp
@@ -22,11 +22,14 @@
 #include <QJsonDocument>
 #include <QJsonObject>
 #include <QJsonArray>
+#include <QXmlStreamReader>
+#include <QRegularExpression>
 #include <pathutils.h>
 
 #include "MultiMC.h"
 #include "logic/lists/InstanceList.h"
 #include "logic/lists/IconList.h"
+#include "logic/lists/MinecraftVersionList.h"
 #include "logic/BaseInstance.h"
 #include "logic/InstanceFactory.h"
 #include "logger/QsLog.h"
@@ -42,6 +45,8 @@ InstanceList::InstanceList(const QString &instDir, QObject *parent)
 	{
 		QDir::current().mkpath(m_instDir);
 	}
+
+	connect(MMC->minecraftlist().get(), &MinecraftVersionList::modelReset, this, &InstanceList::loadList);
 }
 
 InstanceList::~InstanceList()
@@ -285,57 +290,87 @@ InstanceList::InstListError InstanceList::loadList()
 	beginResetModel();
 
 	m_instances.clear();
-	QDir dir(m_instDir);
-	QDirIterator iter(m_instDir, QDir::Dirs | QDir::NoDot | QDir::NoDotDot | QDir::Readable,
-					  QDirIterator::FollowSymlinks);
-	while (iter.hasNext())
+
 	{
-		QString subDir = iter.next();
-		if (!QFileInfo(PathCombine(subDir, "instance.cfg")).exists())
-			continue;
+		QDirIterator iter(m_instDir, QDir::Dirs | QDir::NoDot | QDir::NoDotDot | QDir::Readable,
+						  QDirIterator::FollowSymlinks);
+		while (iter.hasNext())
+		{
+			QString subDir = iter.next();
+			if (!QFileInfo(PathCombine(subDir, "instance.cfg")).exists())
+				continue;
 
-		BaseInstance *instPtr = NULL;
-		auto &loader = InstanceFactory::get();
-		auto error = loader.loadInstance(instPtr, subDir);
+			BaseInstance *instPtr = NULL;
+			auto error = InstanceFactory::get().loadInstance(instPtr, subDir);
+			continueProcessInstance(instPtr, error, subDir, groupMap);
+		}
+	}
 
-		if (error != InstanceFactory::NoLoadError && error != InstanceFactory::NotAnInstance)
+	if (MMC->settings()->get("TrackFTBInstances").toBool() && MMC->minecraftlist()->isLoaded())
+	{
+		QDir dir = QDir(MMC->settings()->get("FTBLauncherRoot").toString());
+		QDir dataDir = QDir(MMC->settings()->get("FTBRoot").toString());
+		if (!dir.exists())
 		{
-			QString errorMsg = QString("Failed to load instance %1: ")
-								   .arg(QFileInfo(subDir).baseName())
-								   .toUtf8();
-
-			switch (error)
-			{
-			default:
-				errorMsg += QString("Unknown instance loader error %1").arg(error);
-				break;
-			}
-			QLOG_ERROR() << errorMsg.toUtf8();
+			QLOG_INFO() << "The FTB launcher directory specified does not exist. Please check your settings.";
 		}
-		else if (!instPtr)
+		else if (!dataDir.exists())
 		{
-			QLOG_ERROR() << QString("Error loading instance %1. Instance loader returned null.")
-								.arg(QFileInfo(subDir).baseName())
-								.toUtf8();
+			QLOG_INFO() << "The FTB directory specified does not exist. Please check your settings";
 		}
 		else
 		{
-			std::shared_ptr<BaseInstance> inst(instPtr);
-			auto iter = groupMap.find(inst->id());
-			if (iter != groupMap.end())
+			dir.cd("ModPacks");
+			QFile f(dir.absoluteFilePath("modpacks.xml"));
+			if (f.open(QFile::ReadOnly))
 			{
-				inst->setGroupInitial((*iter));
+				QXmlStreamReader reader(&f);
+				while (!reader.atEnd())
+				{
+					switch (reader.readNext())
+					{
+					case QXmlStreamReader::StartElement:
+					{
+						if (reader.name() == "modpack")
+						{
+							QXmlStreamAttributes attrs = reader.attributes();
+							const QDir instanceDir = QDir(dataDir.absoluteFilePath(attrs.value("dir").toString()));
+							if (instanceDir.exists())
+							{
+								const QString name = attrs.value("name").toString();
+								const QString iconKey = attrs.value("logo").toString().remove(QRegularExpression("\\..*"));
+								const QString mcVersion = attrs.value("mcVersion").toString();
+								const QString notes = attrs.value("description").toString();
+								QLOG_DEBUG() << dir.absoluteFilePath(attrs.value("logo").toString());
+								MMC->icons()->addIcon(iconKey, iconKey, dir.absoluteFilePath(attrs.value("dir").toString() + QDir::separator() + attrs.value("logo").toString()), true);
+
+								BaseInstance *instPtr = NULL;
+								auto error = InstanceFactory::get().createInstance(instPtr, MMC->minecraftlist()->findVersion(mcVersion), instanceDir.absolutePath(), InstanceFactory::FTBInstance);
+								if (instPtr && error == InstanceFactory::NoCreateError)
+								{
+									instPtr->setGroupInitial("FTB");
+									instPtr->setName(name);
+									instPtr->setIconKey(iconKey);
+									instPtr->setIntendedVersionId(mcVersion);
+									instPtr->setNotes(notes);
+								}
+								continueProcessInstance(instPtr, error, instanceDir, groupMap);
+							}
+						}
+						break;
+					}
+					case QXmlStreamReader::EndElement:
+						break;
+					case QXmlStreamReader::Characters:
+						break;
+					default:
+						break;
+					}
+				}
 			}
-			QLOG_INFO() << "Loaded instance " << inst->name();
-			inst->setParent(this);
-			m_instances.append(inst);
-			connect(instPtr, SIGNAL(propertiesChanged(BaseInstance *)), this,
-					SLOT(propertiesChanged(BaseInstance *)));
-			connect(instPtr, SIGNAL(groupChanged()), this, SLOT(groupChanged()));
-			connect(instPtr, SIGNAL(nuked(BaseInstance *)), this,
-					SLOT(instanceNuked(BaseInstance *)));
 		}
 	}
+
 	endResetModel();
 	emit dataIsInvalid();
 	return NoError;
@@ -409,6 +444,46 @@ int InstanceList::getInstIndex(BaseInstance *inst) const
 	return -1;
 }
 
+void InstanceList::continueProcessInstance(BaseInstance *instPtr, const int error, const QDir &dir, QMap<QString, QString> &groupMap)
+{
+	if (error != InstanceFactory::NoLoadError && error != InstanceFactory::NotAnInstance)
+	{
+		QString errorMsg = QString("Failed to load instance %1: ")
+				.arg(QFileInfo(dir.absolutePath()).baseName())
+				.toUtf8();
+
+		switch (error)
+		{
+		default:
+			errorMsg += QString("Unknown instance loader error %1").arg(error);
+			break;
+		}
+		QLOG_ERROR() << errorMsg.toUtf8();
+	}
+	else if (!instPtr)
+	{
+		QLOG_ERROR() << QString("Error loading instance %1. Instance loader returned null.")
+						.arg(QFileInfo(dir.absolutePath()).baseName())
+						.toUtf8();
+	}
+	else
+	{
+		auto iter = groupMap.find(instPtr->id());
+		if (iter != groupMap.end())
+		{
+			instPtr->setGroupInitial((*iter));
+		}
+		QLOG_INFO() << "Loaded instance " << instPtr->name();
+		instPtr->setParent(this);
+		m_instances.append(std::shared_ptr<BaseInstance>(instPtr));
+		connect(instPtr, SIGNAL(propertiesChanged(BaseInstance *)), this,
+				SLOT(propertiesChanged(BaseInstance *)));
+		connect(instPtr, SIGNAL(groupChanged()), this, SLOT(groupChanged()));
+		connect(instPtr, SIGNAL(nuked(BaseInstance *)), this,
+				SLOT(instanceNuked(BaseInstance *)));
+	}
+}
+
 void InstanceList::instanceNuked(BaseInstance *inst)
 {
 	int i = getInstIndex(inst);
diff --git a/logic/lists/InstanceList.h b/logic/lists/InstanceList.h
index f23b7763..b3ee6cfe 100644
--- a/logic/lists/InstanceList.h
+++ b/logic/lists/InstanceList.h
@@ -25,6 +25,8 @@
 
 class BaseInstance;
 
+class QDir;
+
 class InstanceList : public QAbstractListModel
 {
 	Q_OBJECT
@@ -66,11 +68,6 @@ public:
 	}
 
 	/*!
-	 * \brief Loads the instance list. Triggers notifications.
-	 */
-	InstListError loadList();
-
-	/*!
 	 * \brief Get the instance at index
 	 */
 	InstancePtr at(int i) const
@@ -108,6 +105,11 @@ public
 slots:
 	void on_InstFolderChanged(const Setting &setting, QVariant value);
 
+	/*!
+	 * \brief Loads the instance list. Triggers notifications.
+	 */
+	InstListError loadList();
+
 private
 slots:
 	void propertiesChanged(BaseInstance *inst);
@@ -117,6 +119,8 @@ slots:
 private:
 	int getInstIndex(BaseInstance *inst) const;
 
+	void continueProcessInstance(BaseInstance *instPtr, const int error, const QDir &dir, QMap<QString, QString> &groupMap);
+
 protected:
 	QString m_instDir;
 	QList<InstancePtr> m_instances;
diff --git a/logic/tasks/SequentialTask.cpp b/logic/tasks/SequentialTask.cpp
new file mode 100644
index 00000000..63025eee
--- /dev/null
+++ b/logic/tasks/SequentialTask.cpp
@@ -0,0 +1,77 @@
+#include "SequentialTask.h"
+
+SequentialTask::SequentialTask(QObject *parent) :
+	Task(parent), m_currentIndex(-1)
+{
+
+}
+
+QString SequentialTask::getStatus() const
+{
+	if (m_queue.isEmpty() || m_currentIndex >= m_queue.size())
+	{
+		return QString();
+	}
+	return m_queue.at(m_currentIndex)->getStatus();
+}
+
+void SequentialTask::getProgress(qint64 &current, qint64 &total)
+{
+	current = 0;
+	total = 0;
+	for (int i = 0; i < m_queue.size(); ++i)
+	{
+		qint64 subCurrent, subTotal;
+		m_queue.at(i)->getProgress(subCurrent, subTotal);
+		current += subCurrent;
+		total += subTotal;
+	}
+}
+
+void SequentialTask::addTask(std::shared_ptr<Task> task)
+{
+	m_queue.append(task);
+}
+
+void SequentialTask::executeTask()
+{
+	m_currentIndex = -1;
+	startNext();
+}
+
+void SequentialTask::startNext()
+{
+	if (m_currentIndex != -1)
+	{
+		std::shared_ptr<Task> previous = m_queue[m_currentIndex];
+		disconnect(previous.get(), 0, this, 0);
+	}
+	m_currentIndex++;
+	if (m_queue.isEmpty() || m_currentIndex >= m_queue.size())
+	{
+		emitSucceeded();
+		return;
+	}
+	std::shared_ptr<Task> next = m_queue[m_currentIndex];
+	connect(next.get(), SIGNAL(failed(QString)), this, SLOT(subTaskFailed(QString)));
+	connect(next.get(), SIGNAL(status(QString)), this, SLOT(subTaskStatus(QString)));
+	connect(next.get(), SIGNAL(progress(qint64,qint64)), this, SLOT(subTaskProgress()));
+	connect(next.get(), SIGNAL(succeeded()), this, SLOT(startNext()));
+	next->start();
+	emit status(getStatus());
+}
+
+void SequentialTask::subTaskFailed(const QString &msg)
+{
+	emitFailed(msg);
+}
+void SequentialTask::subTaskStatus(const QString &msg)
+{
+	setStatus(msg);
+}
+void SequentialTask::subTaskProgress()
+{
+	qint64 current, total;
+	getProgress(current, total);
+	setProgress(100 * current / total);
+}
diff --git a/logic/tasks/SequentialTask.h b/logic/tasks/SequentialTask.h
new file mode 100644
index 00000000..7f046928
--- /dev/null
+++ b/logic/tasks/SequentialTask.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "Task.h"
+
+#include <QQueue>
+#include <memory>
+
+class SequentialTask : public Task
+{
+	Q_OBJECT
+public:
+	explicit SequentialTask(QObject *parent = 0);
+
+	virtual QString getStatus() const;
+	virtual void getProgress(qint64 &current, qint64 &total);
+
+	void addTask(std::shared_ptr<Task> task);
+
+protected:
+	void executeTask();
+
+private
+slots:
+	void startNext();
+	void subTaskFailed(const QString &msg);
+	void subTaskStatus(const QString &msg);
+	void subTaskProgress();
+
+private:
+	QQueue<std::shared_ptr<Task> > m_queue;
+	int m_currentIndex;
+};