1 files changed, 77 insertions, 0 deletions
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);
+}