export: made progress on headless export

Still incomplete and unusable, but less so than before.

app/cli/clitask/clitaskdialog.cpp

@@ -23,9 +23,15 @@
 OLIVE_NAMESPACE_ENTER
 
 CLITaskDialog::CLITaskDialog(Task *task, QObject* parent) :
-  CLIProgressDialog(task->GetTitle(), parent)
+  CLIProgressDialog(task->GetTitle(), parent),
+  task_(task)
 {
-  // FIXME: Still developing this, don't try to use
+  connect(task_, &Task::ProgressChanged, this, &CLITaskDialog::SetProgress);
+}
+
+bool CLITaskDialog::Run()
+{
+  return task_->Start();
 }
 
 OLIVE_NAMESPACE_EXIT

app/cli/clitask/clitaskdialog.h

@@ -28,9 +28,15 @@ OLIVE_NAMESPACE_ENTER
 
 class CLITaskDialog : public CLIProgressDialog
 {
+  Q_OBJECT
 public:
   CLITaskDialog(Task *task, QObject* parent = nullptr);
 
+  bool Run();
+
+private:
+  Task* task_;
+
 };
 
 OLIVE_NAMESPACE_EXIT