ui: file clearing progress

* display some progress information when clearing files

src/lib/data/TaskShowStatusDialog.cpp

@@ -0,0 +1,36 @@
+#include "data/TaskShowStatusDialog.h"
+
+#include "component/view/DialogView.h"
+
+TaskShowStatusDialog::TaskShowStatusDialog(
+	const std::string& title,
+	const std::string& message,
+	DialogView* dialogView
+)
+	: m_title(title)
+	, m_message(message)
+	, m_dialogView(dialogView)
+{
+}
+
+TaskShowStatusDialog::~TaskShowStatusDialog()
+{
+}
+
+void TaskShowStatusDialog::doEnter(std::shared_ptr<Blackboard> blackboard)
+{
+}
+
+Task::TaskState TaskShowStatusDialog::doUpdate(std::shared_ptr<Blackboard> blackboard)
+{
+	m_dialogView->showStatusDialog(m_title, m_message);
+	return STATE_SUCCESS;
+}
+
+void TaskShowStatusDialog::doExit(std::shared_ptr<Blackboard> blackboard)
+{
+}
+
+void TaskShowStatusDialog::doReset(std::shared_ptr<Blackboard> blackboard)
+{
+}