add client info to events on request

assets/js/watchers.js

@@ -81,8 +81,9 @@ const reviveMixin = {
 
 const eventMixin = {
   methods: {
-    handle_event: function (event_data, event_handler) {
+    handle_event: function (event_data, event_handler, mode) {
       console.debug('event: ' + JSON.stringify(event_data) + ":" + event_handler)
+      if (mode=='addclient') { event_data._addclient = true}
       Genie.WebChannels.sendMessageTo(window.CHANNEL, 'events', {
           'event': {
               'name': event_handler,

src/Elements.jl

@@ -359,6 +359,7 @@ Sometimes preprocessing of the events is necessary, e.g. to add or skip informat
 ```
 """
 macro on(arg, expr, preprocess = nothing)
+  preprocess isa QuoteNode && preprocess == :(:addclient) && (preprocess = "event._addclient = true")
   kw = Symbol("v-on:", arg isa String ? arg : arg isa QuoteNode ? arg.value : arg.head == :vect ? join(lstrip.(string.(arg.args), ':'), '.') :
     throw("Value '$arg' for `arg` not supported. `arg` should be of type Symbol, String, or Vector{Union{String, Symbol}}"))
 
@@ -370,7 +371,7 @@ macro on(arg, expr, preprocess = nothing)
           :(replace("""function(event) {
               const preprocess = (event) => { """ * replace($preprocess, '"' => "\\\"") * """; return event }
               handle_event(preprocess(event), '$($(esc(expr)))')
-          }'""", '\n' => ';'))
+          }""", '\n' => ';'))
       end
   else
       esc_expr(expr)

src/Stipple.jl

@@ -525,6 +525,13 @@ function init(::Type{M};
       # form handler parameter & call event notifier
       handler = Symbol(get(event, "name", nothing))
       event_info = get(event, "event", nothing)
+
+      # add client id if requested
+      if event_info isa Dict && get(event_info, "_addclient", false)
+        client = transport == Genie.WebChannels ? Genie.WebChannels.id(Genie.Requests.wsclient()) : Genie.Requests.wtclient()
+        push!(event_info, "_client" => client)
+      end
+
       isempty(methods(notify, (M, Val{handler}))) || notify(model, Val(handler))
       isempty(methods(notify, (M, Val{handler}, Any))) || notify(model, Val(handler), event_info)
       LAST_ACTIVITY[Symbol(channel)] = now()