refactor(core): move event JS API to a core plugin

.changes/move-event.md

@@ -0,0 +1,8 @@
+---
+"api": patch
+"tauri": patch
+"tauri-runtime": patch
+"tauri-runtime-wry": patch
+---
+
+Moved the `event` JS APIs to a plugin.

core/tauri-runtime-wry/src/lib.rs

@@ -12,7 +12,7 @@ use tauri_runtime::{
   webview::{WebviewIpcHandler, WindowBuilder, WindowBuilderBase},
   window::{
     dpi::{LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, Position, Size},
-    CursorIcon, DetachedWindow, FileDropEvent, JsEventListenerKey, PendingWindow, WindowEvent,
+    CursorIcon, DetachedWindow, FileDropEvent, PendingWindow, WindowEvent,
   },
   DeviceEventFilter, Dispatch, Error, EventLoopProxy, ExitRequestedEventAction, Icon, Result,
   RunEvent, RunIteration, Runtime, RuntimeHandle, UserAttentionType, UserEvent,
@@ -90,7 +90,7 @@ use std::{
   cell::RefCell,
   collections::{
     hash_map::Entry::{Occupied, Vacant},
-    HashMap, HashSet,
+    HashMap,
   },
   fmt,
   ops::Deref,
@@ -206,7 +206,6 @@ impl<T: UserEvent> Context<T> {
     let label = pending.label.clone();
     let current_url = pending.current_url.clone();
     let menu_ids = pending.menu_ids.clone();
-    let js_event_listeners = pending.js_event_listeners.clone();
     let context = self.clone();
     let window_id = rand::random();
 
@@ -229,7 +228,6 @@ impl<T: UserEvent> Context<T> {
       current_url,
       dispatcher,
       menu_ids,
-      js_event_listeners,
     })
   }
 }
@@ -1944,7 +1942,6 @@ impl<T: UserEvent> Runtime<T> for Wry<T> {
     let label = pending.label.clone();
     let current_url = pending.current_url.clone();
     let menu_ids = pending.menu_ids.clone();
-    let js_event_listeners = pending.js_event_listeners.clone();
     let window_id = rand::random();
 
     let webview = create_webview(
@@ -1972,7 +1969,6 @@ impl<T: UserEvent> Runtime<T> for Wry<T> {
       current_url,
       dispatcher,
       menu_ids,
-      js_event_listeners,
     })
   }
 
@@ -2942,7 +2938,6 @@ fn create_webview<T: UserEvent>(
     label,
     current_url,
     menu_ids,
-    js_event_listeners,
     #[cfg(target_os = "android")]
     on_webview_created,
     ..
@@ -3028,7 +3023,6 @@ fn create_webview<T: UserEvent>(
       label.clone(),
       current_url,
       menu_ids,
-      js_event_listeners,
       handler,
     ));
   }
@@ -3152,7 +3146,6 @@ fn create_ipc_handler<T: UserEvent>(
   label: String,
   current_url: Arc<Mutex<Url>>,
   menu_ids: Arc<Mutex<HashMap<MenuHash, MenuId>>>,
-  js_event_listeners: Arc<Mutex<HashMap<JsEventListenerKey, HashSet<u64>>>>,
   handler: WebviewIpcHandler<T, Wry<T>>,
 ) -> Box<IpcHandler> {
   Box::new(move |window, request| {
@@ -3166,7 +3159,6 @@ fn create_ipc_handler<T: UserEvent>(
         },
         label: label.clone(),
         menu_ids: menu_ids.clone(),
-        js_event_listeners: js_event_listeners.clone(),
       },
       request,
     );

core/tauri-runtime/src/window.rs

@@ -15,7 +15,7 @@ use tauri_utils::{config::WindowConfig, Theme};
 use url::Url;
 
 use std::{
-  collections::{HashMap, HashSet},
+  collections::HashMap,
   hash::{Hash, Hasher},
   path::PathBuf,
   sync::{mpsc::Sender, Arc, Mutex},
@@ -230,9 +230,6 @@ pub struct PendingWindow<T: UserEvent, R: Runtime<T>> {
   /// Maps runtime id to a string menu id.
   pub menu_ids: Arc<Mutex<HashMap<MenuHash, MenuId>>>,
 
-  /// A HashMap mapping JS event names with associated listener ids.
-  pub js_event_listeners: Arc<Mutex<HashMap<JsEventListenerKey, HashSet<u64>>>>,
-
   /// A handler to decide if incoming url is allowed to navigate.
   pub navigation_handler: Option<Box<dyn Fn(Url) -> bool + Send>>,
 
@@ -280,7 +277,6 @@ impl<T: UserEvent, R: Runtime<T>> PendingWindow<T, R> {
         label,
         ipc_handler: None,
         menu_ids: Arc::new(Mutex::new(menu_ids)),
-        js_event_listeners: Default::default(),
         navigation_handler: Default::default(),
         current_url: Arc::new(Mutex::new("tauri://localhost".parse().unwrap())),
         #[cfg(target_os = "android")]
@@ -312,7 +308,6 @@ impl<T: UserEvent, R: Runtime<T>> PendingWindow<T, R> {
         label,
         ipc_handler: None,
         menu_ids: Arc::new(Mutex::new(menu_ids)),
-        js_event_listeners: Default::default(),
         navigation_handler: Default::default(),
         current_url: Arc::new(Mutex::new("tauri://localhost".parse().unwrap())),
         #[cfg(target_os = "android")]
@@ -356,15 +351,6 @@ impl<T: UserEvent, R: Runtime<T>> PendingWindow<T, R> {
   }
 }
 
-/// Key for a JS event listener.
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
-pub struct JsEventListenerKey {
-  /// The associated window label.
-  pub window_label: Option<String>,
-  /// The event name.
-  pub event: String,
-}
-
 /// A webview window that is not yet managed by Tauri.
 #[derive(Debug)]
 pub struct DetachedWindow<T: UserEvent, R: Runtime<T>> {
@@ -379,9 +365,6 @@ pub struct DetachedWindow<T: UserEvent, R: Runtime<T>> {
 
   /// Maps runtime id to a string menu id.
   pub menu_ids: Arc<Mutex<HashMap<MenuHash, MenuId>>>,
-
-  /// A HashMap mapping JS event names with associated listener ids.
-  pub js_event_listeners: Arc<Mutex<HashMap<JsEventListenerKey, HashSet<u64>>>>,
 }
 
 impl<T: UserEvent, R: Runtime<T>> Clone for DetachedWindow<T, R> {
@@ -391,7 +374,6 @@ impl<T: UserEvent, R: Runtime<T>> Clone for DetachedWindow<T, R> {
       label: self.label.clone(),
       dispatcher: self.dispatcher.clone(),
       menu_ids: self.menu_ids.clone(),
-      js_event_listeners: self.js_event_listeners.clone(),
     }
   }
 }

core/tauri/src/api/ipc.rs

@@ -67,7 +67,7 @@ impl<'de, R: Runtime> CommandArg<'de, R> for Channel<R> {
 }
 
 /// The `Callback` type is the return value of the `transformCallback` JavaScript function.
-#[derive(Debug, Clone, Copy, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash, Serialize, Deserialize)]
 pub struct CallbackFn(pub usize);
 
 /// The information about this is quite limited. On Chrome/Edge and Firefox, [the maximum string size is approximately 1 GB](https://stackoverflow.com/a/34958490).

core/tauri/src/app.rs

@@ -612,6 +612,7 @@ shared_app_impl!(AppHandle<R>);
 impl<R: Runtime> App<R> {
   fn register_core_plugins(&self) -> crate::Result<()> {
     self.handle.plugin(crate::path::init())?;
+    self.handle.plugin(crate::event::init())?;
     Ok(())
   }
 

core/tauri/src/endpoints.rs

@@ -12,7 +12,6 @@ use serde_json::Value as JsonValue;
 
 use std::sync::Arc;
 
-mod event;
 mod window;
 
 /// The context passed to the invoke handler.
@@ -50,7 +49,6 @@ impl<T: Serialize> From<T> for InvokeResponse {
 #[serde(tag = "module", content = "message")]
 enum Module {
   Window(Box<window::Cmd>),
-  Event(event::Cmd),
 }
 
 impl Module {
@@ -74,12 +72,6 @@ impl Module {
           .and_then(|r| r.json)
           .map_err(InvokeError::from_anyhow)
       }),
-      Self::Event(cmd) => resolver.respond_async(async move {
-        cmd
-          .run(context)
-          .and_then(|r| r.json)
-          .map_err(InvokeError::from_anyhow)
-      }),
     }
   }
 }