pass ui handle in Plugin::on_ui_message

fyrox-impl/src/engine/mod.rs

@@ -2124,7 +2124,7 @@ impl Engine {
                     };
 
                     for plugin in self.plugins.iter_mut() {
-                        plugin.on_ui_message(&mut context, &message);
+                        plugin.on_ui_message(&mut context, &message, ui);
                     }
                 }
             }

fyrox-impl/src/plugin/mod.rs

@@ -42,6 +42,7 @@ use crate::{
 };
 use fyrox_core::define_as_any_trait;
 use fyrox_core::visitor::error::VisitError;
+use fyrox_ui::UserInterface;
 use std::{
     ops::{Deref, DerefMut},
     path::Path,
@@ -317,12 +318,14 @@ pub trait Plugin: PluginAsAny + Visit + Reflect {
     fn on_graphics_context_destroyed(&mut self, #[allow(unused_variables)] context: PluginContext) {
     }
 
-    /// The method will be called when there is any message from main user interface instance
-    /// of the engine.
+    /// The method will be called when there is any message from a user interface (UI) instance
+    /// of the engine. Use `ui_handle` parameter to find out from which UI the message has come
+    /// from.
     fn on_ui_message(
         &mut self,
         #[allow(unused_variables)] context: &mut PluginContext,
         #[allow(unused_variables)] message: &UiMessage,
+        #[allow(unused_variables)] ui_handle: Handle<UserInterface>,
     ) {
     }
 

template-core/src/lib.rs

@@ -159,7 +159,7 @@ dylib-engine = ["fyrox/dylib"]
 use fyrox::{
     core::pool::Handle, core::visitor::prelude::*, core::reflect::prelude::*,
     event::Event,
-    gui::message::UiMessage,
+    gui::{message::UiMessage, UserInterface},
     plugin::{Plugin, PluginContext, PluginRegistrationContext},
     scene::Scene,
 };
@@ -205,6 +205,7 @@ impl Plugin for Game {
         &mut self,
         _context: &mut PluginContext,
         _message: &UiMessage,
+        _ui_handle: Handle<UserInterface>
     ) {
         // Handle UI events here.
     }