New: Implement EndSessionDialog interface using org.gnome.Shell dbus …

…name

src/Makefile.am

@@ -33,6 +33,7 @@ manokwari_SOURCES = panel-item.vala \
     panel-desktop-data.vala \
     panel-calendar.vala \
     animated-property.vala \
+		panel-shell.vala \
 	$(NULL)
 
 manokwari_VALAFLAGS = \

src/main.vala

@@ -26,6 +26,9 @@ int main (string[] args) {
         }
     );
 
+    // Shell
+    var shell = new PanelShell();
+
     // Desktop
     var d = new PanelDesktop ();
     d.show ();

src/panel-shell.vala

@@ -0,0 +1,157 @@
+using Gtk;
+
+[DBus (name = "org.gnome.SessionManager.EndSessionDialog")]
+public class PanelEndSessionDialog: Object {
+    public signal void canceled();
+    public signal void confirmed_logout();
+    public signal void confirmed_reboot();
+    public signal void confirmed_shutdown();
+    public signal void closed();
+
+    private Label label = null;
+    private int countdown = 10;
+    private uint update_title_source = -1;
+    private string current_title;
+    private uint default_action = 0;
+    private Dialog dialog = null;
+    private bool action_called = false;
+
+    public PanelEndSessionDialog() {
+        label = new Label(null);
+        label.justify = Gtk.Justification.CENTER;
+    }
+
+    void start_update_title (string title)  {
+        countdown = 10;
+        current_title = title;
+        update_title();
+        update_title_source = GLib.Timeout.add_seconds(1, update_title); 
+    }
+
+    bool update_title() {
+        label.set_markup("<span font-weight='heavy' font_size='xx-large'>%d</span>\n".printf(countdown) + current_title);
+        if (countdown <= 0) {
+            countdown = 0;
+            launch_action(default_action);
+            if (dialog != null) {
+                dialog.destroy();
+            }
+            return false;
+        }
+        countdown = countdown - 1;
+        return true;
+    }
+
+    void show_dialog (uint type, string title, string button_text) {
+        default_action = type;
+        var d = new Dialog.with_buttons(_("Confirmation"), null, Gtk.DialogFlags.MODAL, null);
+        dialog = d;
+        d.fullscreen();
+        if (update_title_source >= 0) {
+            GLib.Source.remove(update_title_source);
+            update_title_source = -1;
+        }
+        var cancel_title = _("\nYou can prevent it by pressing <b>Cancel</b> button");
+        start_update_title(title + cancel_title);
+        (d.get_content_area() as Gtk.Box).pack_start(label, true, true);
+        label.show();
+        d.add_button(button_text, 1);
+        d.add_button(_("Cancel"), 2);
+        d.set_default_response(2);
+        d.response.connect((id) => {
+            GLib.Source.remove(update_title_source);
+            update_title_source = -1;
+            if (id == -4 || id == 2) { // closed or canceled
+                canceled();
+                if (id == 2) {
+                  d.destroy();
+                }
+            } else {
+                launch_action(type);
+                d.destroy();
+            }
+        });
+        d.key_press_event.connect ((e) => {
+            if (Gdk.keyval_name(e.keyval) == "Escape") {
+                canceled();
+                d.destroy();
+            }
+            return false;
+        });
+
+        d.run();
+    }
+
+    void launch_action(uint type) {
+        if (action_called == true) {
+            return;
+        }
+        action_called = true;
+        switch (type) {
+          case 3:
+          case 2:
+            confirmed_reboot();
+            break;
+          case 1:
+            confirmed_shutdown();
+            break;
+          case 0:
+          default:
+            confirmed_logout();
+            break;
+        }
+    }
+
+    public async void open (uint type, uint timestamp, uint waiting_time, ObjectPath[] inhibitors) {
+        var title = "";
+        var button_text = "";
+        switch(type) {
+          case 1: // shutdown
+              button_text = _("Shutdown Now");
+              title = _("This computer will go to a shutdown.");
+              break;
+          case 2: // restart
+              button_text = _("Restart Now");
+              title = _("This computer will be restarted.");
+              break;
+          case 3: // restart and install
+              button_text = _("Restart Now");
+              title = _("This computer will be restarted.");
+              break;
+          case 0: // logout
+          default: // fallthrough
+              button_text = _("Logout Now");
+              title = _("Your account will be logged-out.");
+              break;
+        }
+        show_dialog(type, title, button_text);
+    }
+
+    public void close () {
+    }
+}
+
+public class PanelShell : Object {
+    public PanelShell() {
+        Bus.own_name(
+            BusType.SESSION,
+            "org.gnome.Shell",
+            0,
+            () => {},
+            on_name_acquired,
+            () => {
+              stdout.printf ("Unable to claim Shell from gnome-session");
+            }
+        );
+    }
+
+    void on_name_acquired(DBusConnection conn, string name) {
+        try {
+            conn.register_object("/org/gnome/SessionManager/EndSessionDialog", new PanelEndSessionDialog());
+            stderr.printf("EndSessionDialog hooked\n");
+        } catch (IOError e) {
+            stderr.printf("Unable to hook EndSessionDialog\n");
+        }
+    }
+
+}