1 files changed, 55 insertions, 0 deletions
diff --git a/api/logic/tasks/SequentialTask.cpp b/api/logic/tasks/SequentialTask.cpp
new file mode 100644
index 00000000..ac0e7820
--- /dev/null
+++ b/api/logic/tasks/SequentialTask.cpp
@@ -0,0 +1,55 @@
+#include "SequentialTask.h"
+
+SequentialTask::SequentialTask(QObject *parent) : Task(parent), m_currentIndex(-1)
+{
+}
+
+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(qint64, qint64)));
+	connect(next.get(), SIGNAL(succeeded()), this, SLOT(startNext()));
+	next->start();
+}
+
+void SequentialTask::subTaskFailed(const QString &msg)
+{
+	emitFailed(msg);
+}
+void SequentialTask::subTaskStatus(const QString &msg)
+{
+	setStatus(msg);
+}
+void SequentialTask::subTaskProgress(qint64 current, qint64 total)
+{
+	if(total == 0)
+	{
+		setProgress(0, 100);
+		return;
+	}
+	setProgress(current, total);
+}