Open directories from the command line

src/gui.rs

@@ -1,16 +1,17 @@
 use crate::config;
-use gtk::{prelude::*, ResponseType};
+use gtk::{gio::ApplicationFlags, glib, prelude::*, ResponseType};
 use std::rc::Rc;
 mod treemap_widget;
 use treemap_widget::TreeMapWidget;
 
 pub fn initiate_ui() {
-    let application = gtk::Application::new(Some(config::APP_NAME), Default::default());
-    application.connect_activate(build_ui);
+    let application = gtk::Application::new(Some(config::APP_NAME), ApplicationFlags::HANDLES_OPEN);
+    application.connect_open(build_ui);
+    application.connect_activate(|app| build_ui(app, &[], ""));
     application.run();
 }
 
-fn build_ui(application: &gtk::Application) {
+fn build_ui(application: &gtk::Application, arg_dirs: &[gtk::gio::File], _: &str) {
     let window = gtk::ApplicationWindow::new(application);
 
     window.set_title(Some(config::APP_TITLE));
@@ -34,21 +35,25 @@ fn build_ui(application: &gtk::Application) {
         Some("Cancel"),
     );
 
-    file_chooser.connect_response(move |d: &gtk::FileChooserNative, response: ResponseType| {
+    file_chooser.connect_response(glib::clone!(@weak treemap_widget => move |d: &gtk::FileChooserNative, response: ResponseType| {
         if response == ResponseType::Accept {
             let directory = d.file().expect("Couldn't get directory");
             let path = directory.path().expect("Couldn't get path");
-            treemap_widget.start_scan(&path.display().to_string());
+            treemap_widget.start_scan(path.to_str().unwrap());
             println!("{}", path.display());
         }
 
         d.hide();
-    });
+    }));
 
     let open_button = gtk::Button::new();
     open_button.set_icon_name("document-open");
     headerbar.pack_start(&open_button);
     open_button.connect_clicked(move |_| file_chooser.show());
 
+    if let Some(dir) = arg_dirs.get(0) {
+        treemap_widget.start_scan(dir.path().expect("Couldn't get path").to_str().unwrap());
+    }
+
     window.show();
 }

src/gui/treemap_widget/imp.rs

@@ -148,7 +148,7 @@ impl ObjectImpl for TreeMapWidget {
 
     fn constructed(&self) {
         self.parent_constructed();
-        self.scan_complete_flag.replace(false);
+        self.scan_complete_flag.replace(true);
         let obj = self.obj();
         obj.set_width_request(100);
         obj.set_height_request(100);