Send notification on screenshot

src/ScreenshotManager.vala

@@ -23,6 +23,7 @@ namespace Gala {
     [DBus (name="org.gnome.Shell.Screenshot")]
     public class ScreenshotManager : Object {
         private WindowManager wm;
+        private NotificationsManager notifications_manager;
         private Settings desktop_settings;
 
         private string prev_font_regular;
@@ -31,8 +32,9 @@ namespace Gala {
         private uint conceal_timeout;
 
         [DBus (visible = false)]
-        public ScreenshotManager (WindowManager _wm) {
+        public ScreenshotManager (WindowManager _wm, NotificationsManager _notifications_manager) {
             wm = _wm;
+            notifications_manager = _notifications_manager;
         }
 
         construct {

src/WindowManager.vala

@@ -193,7 +193,7 @@ namespace Gala {
             unowned Meta.Display display = get_display ();
 
             notifications_manager = new NotificationsManager ();
-            screenshot_manager = new ScreenshotManager (this);
+            screenshot_manager = new ScreenshotManager (this, notifications_manager);
             DBus.init (this, notifications_manager, screenshot_manager);
 
             WindowListener.init (display);
@@ -2323,6 +2323,10 @@ namespace Gala {
                 bool success = false;
                 string filename_used = "";
                 yield screenshot_manager.screenshot_window (true, false, true, filename, out success, out filename_used);
+
+                if (success) {
+                    send_screenshot_notification (clipboard);
+                }
             } catch (Error e) {
                 // Ignore this error
             }
@@ -2337,6 +2341,10 @@ namespace Gala {
                 int x, y, w, h;
                 yield screenshot_manager.select_area (out x, out y, out w, out h);
                 yield screenshot_manager.screenshot_area (x, y, w, h, true, filename, out success, out filename_used);
+
+                if (success) {
+                    send_screenshot_notification (clipboard);
+                }
             } catch (Error e) {
                 // Ignore this error
             }
@@ -2348,9 +2356,23 @@ namespace Gala {
                 bool success = false;
                 string filename_used = "";
                 yield screenshot_manager.screenshot (false, true, filename, out success, out filename_used);
+
+                if (success) {
+                    send_screenshot_notification (clipboard);
+                }
             } catch (Error e) {
                 // Ignore this error
             }
         }
+
+        private void send_screenshot_notification (bool clipboard) {
+            notifications_manager.send.begin (
+                "ScreenshotManager",
+                "image-x-generic",
+                "Screenshot taken",
+                clipboard ? _("Screenshot is saved to clipboard") : _("Screenshot saved to screenshots folder"),
+                new GLib.HashTable<string, Variant> (null, null)
+            );
+        }
     }
 }