adds Events::Client.on method

allows registering blocks to be called back later

examples, readme updated

minor bump

README.md

@@ -67,7 +67,7 @@ For a full list of requests refer to [Requests](https://github.com/obsproject/ob
 
 ### Events
 
-Register `on_` callback methods. Method names should match the api event but snake cased.
+Register blocks with the Event client using the `on` method. The event data will be passed to the block.
 
 example:
 
@@ -75,23 +75,14 @@ example:
 class Observer
     def initialize
         @e_client = OBSWS::Events::Client.new(host: "localhost", port: 4455, password: "strongpassword")
-        # register callback methods with the Event client
-        @e_client.register(
-          [
-            method(:on_current_program_scene_changed),
-            method(:on_input_mute_state_changed)
-          ]
-        )
+        # register blocks on event types.
+        @e_client.on(:current_program_scene_changed) do |data|
+          ...
+        end
+        @e_client.on(:input_mute_state_changed) do |data|
+          ...
+        end
     end
-
-    # define "on_" event methods.
-    def on_current_program_scene_changed(data)
-        ...
-    end
-    def on_input_mute_state_changed(data)
-        ...
-    end
-    ...
 end
 ```
 

examples/events/main.rb

@@ -1,19 +1,28 @@
 require_relative "../../lib/obsws"
 require "yaml"
 
-
 class Main
   def initialize(**kwargs)
     @r_client = OBSWS::Requests::Client.new(**kwargs)
     @e_client = OBSWS::Events::Client.new(**kwargs)
-    @e_client.add_observer(self)
+
+    @e_client.on(:current_program_scene_changed) do |data|
+      puts "Switched to scene #{data.scene_name}"
+    end
+    @e_client.on(:scene_created) do |data|
+      puts "scene #{data.scene_name} has been created"
+    end
+    @e_client.on(:input_mute_state_changed) do |data|
+      puts "#{data.input_name} mute toggled"
+    end
+    @e_client.on(:exit_started) do
+      puts "OBS closing!"
+      @r_client.close
+      @e_client.close
+      @running = false
+    end
 
     puts infostring
-    @running = true
-  end
-
-  def run
-    sleep(0.1) while @running
   end
 
   def infostring
@@ -24,23 +33,9 @@ class Main
     ].join(" ")
   end
 
-  def on_current_program_scene_changed(data)
-    puts "Switched to scene #{data.scene_name}"
-  end
-
-  def on_scene_created(data)
-    puts "scene #{data.scene_name} has been created"
-  end
-
-  def on_input_mute_state_changed(data)
-    puts "#{data.input_name} mute toggled"
-  end
-
-  def on_exit_started
-    puts "OBS closing!"
-    @r_client.close
-    @e_client.close
-    @running = false
+  def run
+    @running = true
+    sleep(0.1) while @running
   end
 end
 

examples/levels/main.rb

@@ -13,36 +13,29 @@ class Main
   def initialize(**kwargs)
     subs = OBSWS::Events::SUBS::LOW_VOLUME | OBSWS::Events::SUBS::INPUTVOLUMEMETERS
     @e_client = OBSWS::Events::Client.new(subs:, **kwargs)
-    @e_client.register(
-      [
-        method(:on_input_mute_state_changed),
-        method(:on_input_volume_meters)
-      ]
-    )
+
+    @e_client.on(:input_mute_state_changed) do |data|
+      if data.input_name == DEVICE
+        puts "#{DEVICE} mute toggled"
+      end
+    end
+    @e_client.on(:input_volume_meters) do |data|
+      fget = ->(x) { (x > 0) ? (20 * Math.log(x, 10)).round(1) : -200.0 }
+
+      data.inputs.each do |d|
+        name = d[:inputName]
+        if name == DEVICE && !d[:inputLevelsMul].empty?
+          left, right = d[:inputLevelsMul]
+          puts "#{name} [L: #{fget.call(left[LevelTypes::POSTFADER])}, R: #{fget.call(right[LevelTypes::POSTFADER])}]"
+        end
+      end
+    end
   end
 
   def run
     puts "press <Enter> to quit"
     loop { break if gets.chomp.empty? }
   end
-
-  def on_input_mute_state_changed(data)
-    if data.input_name == DEVICE
-      puts "#{DEVICE} mute toggled"
-    end
-  end
-
-  def on_input_volume_meters(data)
-    fget = ->(x) { (x > 0) ? (20 * Math.log(x, 10)).round(1) : -200.0 }
-
-    data.inputs.each do |d|
-      name = d[:inputName]
-      if name == DEVICE && !d[:inputLevelsMul].empty?
-        left, right = d[:inputLevelsMul]
-        puts "#{name} [L: #{fget.call(left[LevelTypes::POSTFADER])}, R: #{fget.call(right[LevelTypes::POSTFADER])}]"
-      end
-    end
-  end
 end
 
 def conn_from_yaml

lib/obsws/event.rb

@@ -28,43 +28,35 @@ module OBSWS
       ALL = LOW_VOLUME | HIGH_VOLUME
     end
 
-    module Callbacks
+    module EventDirector
       include Util::String
 
       def observers
-        @observers ||= []
+        @observers ||= {}
       end
 
-      def add_observer(observer)
-        observer = [observer] unless observer.respond_to? :each
-        observer.each { |o| observers << o unless observers.include? o }
+      def on(event, method = nil, &block)
+        (observers[event] ||= []) << (block || method)
       end
 
-      def remove_observer(observer)
-        observer = [observer] unless observer.respond_to? :each
-        observers.reject! { |o| observer.include? o }
+      def register(cbs)
+        cbs = [cbs] unless cbs.respond_to? :each
+        cbs.each { |cb| on(cb.name[3..].to_sym, cb) }
       end
 
-      private def notify_observers(event, data)
-        observers.each do |o|
-          if o.is_a? Method
-            if o.name.to_s == "on_#{snakecase(event)}"
-              data.empty? ? o.call : o.call(data)
-            end
-          elsif o.respond_to? "on_#{snakecase(event)}"
-            data.empty? ? o.send("on_#{snakecase(event)}") : o.send("on_#{snakecase(event)}", data)
-          end
-        end
+      def deregister(cbs)
+        cbs = [cbs] unless cbs.respond_to? :each
+        cbs.each { |cb| observers[cb.name[3..].to_sym]&.reject! { |o| cbs.include? o } }
       end
 
-      alias_method :callbacks, :observers
-      alias_method :register, :add_observer
-      alias_method :deregister, :remove_observer
+      def fire(event, data)
+        observers[snakecase(event).to_sym]&.each { |block| data.empty? ? block.call : block.call(data) }
+      end
     end
 
     class Client
       include Logging
-      include Callbacks
+      include EventDirector
       include Mixin::TearDown
       include Mixin::OPCodes
 
@@ -87,7 +79,7 @@ module OBSWS
             logger.debug("received: #{data}")
             event = data[:eventType]
             data = data.fetch(:eventData, {})
-            notify_observers(event, Mixin::Data.new(data, data.keys))
+            fire(event, Mixin::Data.new(data, data.keys))
           end
         }
       end

lib/obsws/version.rb

@@ -7,11 +7,11 @@ module OBSWS
     end
 
     def minor
-      5
+      6
     end
 
     def patch
-      8
+      0
     end
 
     def to_a