Add remote commands support

src/ruby/commands.rb

@@ -0,0 +1,29 @@
+def handle_command(command)
+  reply = {}
+
+  command_parts = command.split(" ")
+  command = command_parts[0]
+  args = command_parts[1..-1]
+
+  case command
+  when "get-ws"
+    monitor = args[0] ? $monitors[args[0].to_sym] : current_monitor
+    return reply if monitor.nil?
+    reply[:workspace] = monitor[:selected_workspace]
+    reply[:monitor] = $monitors.key(monitor)
+    reply[:count] = monitor[:workspaces].length
+  when "set-ws"
+    monitor = args[1] ? $monitors[args[1].to_sym] : current_monitor
+    return reply if monitor.nil?
+    select_workspace args[0].to_i, monitor
+    reply[:workspace] = monitor[:selected_workspace]
+    reply[:monitor] = $monitors.key(monitor)
+    reply[:count] = monitor[:workspaces].length
+  when "topped"
+    reply[:topped] = $topped_windows
+  when "stop"
+    exit 1
+  end
+
+  reply
+end