Bi-directional global brightness updates

src/main/java/com/getpcpanel/mqtt/MqttDeviceColorService.java

@@ -101,7 +101,7 @@ public void buildSubscriptions(Device device, LightingConfig lighting) {
             var newBrightness = NumberUtils.toInt(payload, 100);
             lighting.setGlobalBrightness(newBrightness);
             andThen.run();
-            applicationEventPublisher.publishEvent(new HomePage.GlobalBrightnessChangedEvent(newBrightness));
+            applicationEventPublisher.publishEvent(new HomePage.GlobalBrightnessChangedEvent(this, device.getSerialNumber(), newBrightness));
         });
         subscribeToColors(lighting.getKnobConfigs(), topicHelper, dial, knobOverride, idx -> device.getLightingConfig().getKnobConfigs()[idx].getColor1());
         subscribeToColors(lighting.getSliderConfigs(), topicHelper, slider, sliderOverride, idx -> device.getLightingConfig().getSliderConfigs()[idx].getColor1());

src/main/java/com/getpcpanel/mqtt/MqttDeviceService.java

@@ -32,6 +32,7 @@
 import com.getpcpanel.profile.SingleKnobLightingConfig;
 import com.getpcpanel.profile.SingleSliderLabelLightingConfig;
 import com.getpcpanel.profile.SingleSliderLightingConfig;
+import com.getpcpanel.ui.HomePage.GlobalBrightnessChangedEvent;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.log4j.Log4j2;
@@ -116,6 +117,11 @@ public void buttonPress(ButtonClickEvent btn) {
         });
     }
 
+    @EventListener
+    public void globalBrightnessChange(GlobalBrightnessChangedEvent event) {
+        mqtt.send(mqttTopicHelper.valueTopic(event.serialNr(), brightness, 0), String.valueOf(event.brightness()), false);
+    }
+
     private void initialize(Device device) {
         if (initializedDevices.contains(device)) {
             return;

src/main/java/com/getpcpanel/ui/HomePage.java

@@ -4,6 +4,7 @@
 
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.event.EventListener;
 import org.springframework.stereotype.Component;
 
@@ -45,6 +46,7 @@ public class HomePage extends Application {
     private final SaveService saveService;
     private final DeviceScanner deviceScanner;
     private final DeviceHolder devices;
+    private final ApplicationEventPublisher applicationEventPublisher;
 
     @Value("${application.version}") private String version;
     @Value("${application.build}") private String build;
@@ -105,9 +107,11 @@ public void start(Stage stage) throws Exception {
         deviceScanner.init();
     }
 
-    @EventListener(GlobalBrightnessChangedEvent.class)
-    public void globalBrightnessChanged() {
-        globalBrightness.setValue(connectedDeviceList.getSelectionModel().getSelectedItem().getLightingConfig().getGlobalBrightness());
+    @EventListener
+    public void globalBrightnessChanged(GlobalBrightnessChangedEvent event) {
+        if (!event.isSource(this)) {
+            globalBrightness.setValue(connectedDeviceList.getSelectionModel().getSelectedItem().getLightingConfig().getGlobalBrightness());
+        }
     }
 
     private void addBrightnessListener() {
@@ -130,6 +134,7 @@ private void addBrightnessListener() {
             var light = device.getLightingConfig();
             light.setGlobalBrightness(newValue.byteValue());
             device.setLighting(light, false);
+            applicationEventPublisher.publishEvent(new GlobalBrightnessChangedEvent(this, serialNumber, newValue.intValue()));
         });
     }
 
@@ -251,6 +256,10 @@ public void onSaveEvent(SaveService.SaveEvent event) {
     public record ShowMainEvent() {
     }
 
-    public record GlobalBrightnessChangedEvent(int brightness) {
+    public record GlobalBrightnessChangedEvent(Object source, String serialNr, int brightness) {
+        public boolean isSource(Object other) {
+            //noinspection ObjectEquality
+            return source == other;
+        }
     }
 }