feat: use EventEmitter for events

examples/repl/cmdline.rs

@@ -86,7 +86,7 @@ async fn reset_tables(context: &Context, bits: i32) {
         println!("(8) Rest but server config reset.");
     }
 
-    context.call_cb(Event::MsgsChanged {
+    context.emit_event(Event::MsgsChanged {
         chat_id: ChatId::new(0),
         msg_id: MsgId::new(0),
     });
@@ -157,7 +157,7 @@ async fn poke_spec(context: &Context, spec: Option<&str>) -> bool {
     }
     println!("Import: {} items read from \"{}\".", read_cnt, &real_spec);
     if read_cnt > 0 {
-        context.call_cb(Event::MsgsChanged {
+        context.emit_event(Event::MsgsChanged {
             chat_id: ChatId::new(0),
             msg_id: MsgId::new(0),
         });
@@ -1030,7 +1030,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
         //     ensure!(!arg1.is_empty(), "Argument <id> missing.");
         //     let event = arg1.parse()?;
         //     let event = Event::from_u32(event).ok_or(format_err!("Event::from_u32({})", event))?;
-        //     let r = context.call_cb(event, 0 as libc::uintptr_t, 0 as libc::uintptr_t);
+        //     let r = context.emit_event(event, 0 as libc::uintptr_t, 0 as libc::uintptr_t);
         //     println!(
         //         "Sending event {:?}({}), received value {}.",
         //         event, event as usize, r as libc::c_int,

examples/repl/main.rs

@@ -275,10 +275,10 @@ async fn start(args: Vec<String>) -> Result<(), Error> {
     }
     let context = Context::new("CLI".into(), Path::new(&args[1]).to_path_buf()).await?;
 
-    let ctx = context.clone();
+    let events = context.get_event_emitter();
     async_std::task::spawn(async move {
         loop {
-            if let Ok(event) = ctx.get_next_event() {
+            if let Some(event) = events.recv().await {
                 receive_event(event);
             }
         }

examples/simple.rs

@@ -38,10 +38,10 @@ async fn main() {
     let duration = time::Duration::from_millis(4000);
     println!("info: {:#?}", info);
 
-    let ctx1 = ctx.clone();
+    let events = ctx.get_event_emitter();
     async_std::task::spawn(async move {
         loop {
-            if let Ok(event) = ctx1.get_next_event() {
+            if let Some(event) = events.recv().await {
                 cb(event);
             }
         }