From 69901f35020c3ff45ae9ce8344fe89ded411f12b Mon Sep 17 00:00:00 2001
From: onyx-and-iris <code@onyxandiris.online>
Date: Fri, 14 Jul 2023 00:54:12 +0100
Subject: [PATCH] Events::Callbacks and Events::Tracker defined

---
 lib/voicemeeter/event.rb | 88 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 lib/voicemeeter/event.rb

diff --git a/lib/voicemeeter/event.rb b/lib/voicemeeter/event.rb
new file mode 100644
index 0000000..66942ea
--- /dev/null
+++ b/lib/voicemeeter/event.rb
@@ -0,0 +1,88 @@
+module Voicemeeter
+  module Events
+    module Callbacks
+      attr_reader :callbacks
+
+      def register(*args)
+        args.each { |callback| @callbacks.append callback }
+      end
+
+      def deregister(*args)
+        @callbacks.reject! { |c| args.include? c }
+      end
+
+      def on_event(event)
+        @callbacks.each do |callback|
+          if callback.respond_to? :on_update
+            callback.on_update { event.to_s[3..] }
+          else
+            callback.call if callback.name == event
+          end
+        end
+      end
+    end
+
+    class Tracker
+      attr_reader :pdirty, :mdirty, :midi, :ldirty
+
+      def initialize(pdirty: false, mdirty: false, midi: false, ldirty: false)
+        @pdirty = pdirty
+        @mdirty = mdirty
+        @midi = midi
+        @ldirty = ldirty
+      end
+
+      def to_s
+        "#{self.class.name.split("::").last}"
+      end
+
+      def info(msg = nil)
+        info_msg = msg ? ["#{msg} events."] : []
+        if any?
+          info_msg += ["Now listening for #{get.join(", ")} events"]
+        else
+          info_msg += ["Not listening for any events"]
+        end
+        logger.info(info_msg.join(" "))
+      end
+
+      def pdirty=(val)
+        @pdirty = val
+        info("pdirty #{val ? "added to" : "removed from"}")
+      end
+
+      def mdirty=(val)
+        @mdirty = val
+        info("mdirty #{val ? "added to" : "removed from"}")
+      end
+
+      def ldirty=(val)
+        @ldirty = val
+        info("ldirty #{val ? "added to" : "removed from"}")
+      end
+
+      def midi=(val)
+        @midi = val
+        info("midi #{val ? "added to" : "removed from"}")
+      end
+
+      def get
+        %w[pdirty mdirty midi ldirty].reject { |ev| !send("#{ev}") }
+      end
+
+      def any?
+        [pdirty, mdirty, midi, ldirty].any?
+      end
+
+      def add(events)
+        events = [events] if !events.respond_to? :each
+        events.each { |e| send("#{e}=", true) }
+      end
+
+      def remove(events)
+        events = [events] if !events.respond_to? :each
+        events.each { |e| send("#{e}=", false) }
+      end
+    end
+  end
+end