diff --git a/juci/juci.cc b/juci/juci.cc
index cedf99d..5402b10 100644
--- a/juci/juci.cc
+++ b/juci/juci.cc
@@ -1,5 +1,4 @@
-#include "window.h"
-#include "logging.h"
+#include "juci.h"
 
 void init_logging() {
   add_common_attributes();
@@ -8,12 +7,43 @@ void init_logging() {
   INFO("Logging initalized");
 }
 
+int Juci::on_command_line(const Glib::RefPtr<Gio::ApplicationCommandLine> &cmd) {
+  Glib::set_prgname("juci");
+  Glib::OptionContext ctx("[PATH ...]");
+  Glib::OptionGroup gtk_group(gtk_get_option_group(true));
+  ctx.add_group(gtk_group);
+  int argc;
+  char **argv = cmd->get_arguments(argc);
+  ctx.parse(argc, argv);
+  if(argc>=2) {
+    for(size_t c=1;c<argc;c++) {
+      boost::filesystem::path p=boost::filesystem::canonical(argv[c]);
+      if(boost::filesystem::exists(p)) {
+        if(boost::filesystem::is_regular_file(p))
+          files.emplace_back(p.string());
+        else if(directory=="" && boost::filesystem::is_directory(p))
+          directory=p.string();
+      }
+    }
+  }
+  activate();
+  return 0;
+}
+
+void Juci::on_activate() {
+  window = std::unique_ptr<Window>(new Window());
+  add_window(*window);
+  window->show();
+  if(directory!="") {
+    //TODO: use the following instead, window->notebook_.open_directory(directory);
+    window->notebook_.project_path=directory;
+    window->notebook_.directories().open_folder(directory);
+  }
+  for(auto &f: files)
+    window->notebook_.OnOpenFile(f);
+}
+
 int main(int argc, char *argv[]) {
-  Glib::RefPtr<Gtk::Application> app = Gtk::Application::create(
-                                                                argc,
-                                                                argv,
-                                                                "no.sout.juci");
   init_logging();
-  Window window;
-  return app->run(window);
+  return Juci().run(argc, argv);
 }
diff --git a/juci/juci.h b/juci/juci.h
new file mode 100644
index 0000000..9d55502
--- /dev/null
+++ b/juci/juci.h
@@ -0,0 +1,15 @@
+#include "window.h"
+#include "logging.h"
+
+class Juci : public Gtk::Application {
+public:
+  Juci(): Gtk::Application("no.sout.juci", Gio::APPLICATION_HANDLES_COMMAND_LINE) {}
+  
+  int on_command_line(const Glib::RefPtr<Gio::ApplicationCommandLine> &cmd);
+  void on_activate();
+
+private:
+  std::unique_ptr<Window> window;
+  std::string directory;
+  std::vector<std::string> files;
+};