Remove duplicates

src/device.rs

@@ -141,7 +141,7 @@ impl Device {
                 .iter()
                 .map(|kind| {
                     (
-                        format!("{:?}", kind),
+                        code_to_string(kind),
                         match self.device.abs_info(kind) {
                             Some(abs_info) => Descriptor::Slider {
                                 min: abs_info.minimum,
@@ -165,7 +165,7 @@ impl Device {
                                 .iter()
                                 .map(|kind| {
                                     (
-                                        format!("{:?}", kind),
+                                        code_to_string(kind),
                                         match self.device.abs_info(kind) {
                                             Some(abs_info) => Descriptor::Slider {
                                                 min: abs_info.minimum,
@@ -182,7 +182,7 @@ impl Device {
                                 .iter()
                                 .map(|kind| {
                                     (
-                                        format!("{:?}", kind),
+                                        code_to_string(kind),
                                         match self.device.abs_info(kind) {
                                             Some(abs_info) => Descriptor::Slider {
                                                 min: abs_info.minimum,
@@ -197,7 +197,7 @@ impl Device {
                         EventType::EV_KEY => Some(
                             kinds
                                 .iter()
-                                .map(|kind| (format!("{:?}", kind), Descriptor::Button))
+                                .map(|kind| (code_to_string(kind), Descriptor::Button))
                                 .collect(),
                         ),
 

src/event_code_iters.rs

@@ -666,3 +666,16 @@ pub fn ev_reps() -> &'static [EventCode] {
 
     &EVENT_CODES
 }
+
+pub fn code_to_string(code: &EventCode) -> String {
+    match code {
+        EventCode::EV_KEY(key) => format!("{:?}", key),
+        EventCode::EV_REL(rel) => format!("{:?}", rel),
+        EventCode::EV_ABS(abs) => format!("{:?}", abs),
+        EventCode::EV_REP(rep) => format!("{:?}", rep),
+        EventCode::EV_FF(ff) => format!("{:?}", ff),
+        EventCode::EV_FF_STATUS(ffs) => format!("{:?}", ffs),
+
+        _ => panic!(),
+    }
+}

src/graph_editor_egui.rs

@@ -55,7 +55,24 @@ pub fn draw_graph_editor(
             node_finder_area = node_finder_area.current_pos(pos);
         }
         node_finder_area.show(ctx, |ui| {
-            if let Some(node_device) = node_finder.show(devices, virtual_device.is_none(), ui) {
+            // don't allow a nodes to be duplicated
+            let devs: Vec<&Device> = devices
+                .iter()
+                .filter(|device| {
+                    let mut allow = true;
+
+                    for (_node_id, node) in state.graph.nodes.iter() {
+                        if node.op_name == device.name() {
+                            allow = false;
+                            break;
+                        }
+                    }
+
+                    allow
+                })
+                .collect();
+
+            if let Some(node_device) = node_finder.show(&devs, virtual_device.is_none(), ui) {
                 let new_node = state.graph.add_node(node_device.to_descriptor());
                 state
                     .node_positions

src/node_finder.rs

@@ -41,7 +41,7 @@ impl NodeFinder {
     /// the next frame.
     pub fn show<'a>(
         &mut self,
-        devices: &'a [Device],
+        devices: &'a [&Device],
         allow_virt_dev: bool,
         ui: &mut Ui,
     ) -> Option<SelectedDevice<'a>> {