VideoPlayer error handler

src/video_player.rs

@@ -16,6 +16,7 @@ where
     video: &'a Video,
     on_end_of_stream: Option<Message>,
     on_new_frame: Option<Message>,
+    on_error: Option<Box<dyn Fn(&glib::Error) -> Message + 'a>>,
     _phantom: PhantomData<(Theme, Renderer)>,
 }
 
@@ -29,6 +30,7 @@ where
             video,
             on_end_of_stream: None,
             on_new_frame: None,
+            on_error: None,
             _phantom: Default::default(),
         }
     }
@@ -48,6 +50,16 @@ where
             ..self
         }
     }
+
+    pub fn on_error<F>(self, on_error: F) -> Self
+    where
+        F: 'a + Fn(&glib::Error) -> Message,
+    {
+        VideoPlayer {
+            on_error: Some(Box::new(on_error)),
+            ..self
+        }
+    }
 }
 
 impl<'a, Message, Theme, Renderer> Widget<Message, Theme, Renderer>
@@ -134,7 +146,13 @@ where
 
                 for msg in inner.bus.iter() {
                     match msg.view() {
-                        gst::MessageView::Error(err) => panic!("{:#?}", err),
+                        gst::MessageView::Error(err) => {
+                            if let Some(ref on_error) = self.on_error {
+                                shell.publish(on_error(&err.error()))
+                            } else {
+                                panic!("{:#?}", err)
+                            };
+                        }
                         gst::MessageView::Eos(_eos) => {
                             if let Some(on_end_of_stream) = self.on_end_of_stream.clone() {
                                 shell.publish(on_end_of_stream);