Delete items from graph when they are removed by the pipewire server.

src/view/graph_view.rs

@@ -205,6 +205,14 @@ impl GraphView {
         private.nodes.borrow_mut().insert(id, node);
     }
 
+    pub fn remove_node(&self, id: u32) {
+        let private = imp::GraphView::from_instance(self);
+        let mut nodes = private.nodes.borrow_mut();
+        if let Some(node) = nodes.remove(&id) {
+            node.unparent();
+        }
+    }
+
     pub fn add_port_to_node(&self, node_id: u32, port_id: u32, port: crate::view::port::Port) {
         let private = imp::GraphView::from_instance(self);
 
@@ -229,6 +237,14 @@ impl GraphView {
         self.queue_draw();
     }
 
+    pub fn remove_link(&self, id: u32) {
+        let private = imp::GraphView::from_instance(self);
+        let mut links = private.links.borrow_mut();
+        links.remove(&id);
+
+        self.queue_draw();
+    }
+
     pub fn set_dragged(&self, widget: Option<gtk::Widget>) {
         *imp::GraphView::from_instance(self).dragged.borrow_mut() = widget;
     }

src/view/node.rs

@@ -142,4 +142,16 @@ impl Node {
             .get(&id)
             .map(|port_rc| port_rc.clone())
     }
+
+    pub fn remove_port(&self, id: u32) {
+        let private = imp::Node::from_instance(self);
+        if let Some(port) = private.ports.borrow_mut().remove(&id) {
+            match port.direction {
+                Direction::Input => private.num_ports_in.set(private.num_ports_in.get() - 1),
+                Direction::Output => private.num_ports_in.set(private.num_ports_out.get() - 1),
+            }
+
+            port.widget.unparent();
+        }
+    }
 }