add helper to recognize own event

library/cwm/examples/object_api.rb

@@ -1,3 +1,5 @@
+# Simple example to demonstrate object API for CWM
+
 require_relative "example_helper"
 
 require "cwm/widget"
@@ -21,14 +23,6 @@ def label
   def store(_widget, _event)
     @result = value
   end
-
-  def handle(widget, _event)
-    return if widget != widget_id
-
-    Yast::Builtins.y2milestone("int handle called")
-
-    nil
-  end
 end
 
 class GenerateButton < CWM::PushButtonWidget
@@ -41,8 +35,8 @@ def label
     _("Generate Lucky Number")
   end
 
-  def handle(widget, _event)
-    return if widget != widget_id
+  def handle(widget, event)
+    return unless my_event?(widget, event)
 
     Yast::Builtins.y2milestone("handle called")
     @lucky_number.value = rand(1000)

library/cwm/examples/object_api_enabling.rb

@@ -1,3 +1,5 @@
+# This example is here to demonstrate how can be widgets easily enabled/disabled from other widgets
+
 require_relative "example_helper"
 
 require "cwm/widget"
@@ -23,7 +25,7 @@ def store(_widget, _event)
   end
 
   def handle(widget, event)
-    return if widget != event["ID"]
+    return unless my_event?(widget, event)
 
     Yast::Builtins.y2milestone("int handle called")
 
@@ -47,7 +49,7 @@ def init(_widget)
   end
 
   def handle(widget, event)
-    return if widget != event["ID"]
+    return unless my_event?(widget, event)
 
     Yast::Builtins.y2milestone("enable handle called")
     @lucky_number.enable
@@ -73,7 +75,7 @@ def label
   end
 
   def handle(widget, event)
-    return if widget != event["ID"]
+    return unless my_event?(widget, event)
 
     Yast::Builtins.y2milestone("disable handle called")
     @lucky_number.disable

library/cwm/src/lib/cwm/widget.rb

@@ -77,6 +77,11 @@ def disable
 
   protected
 
+    # helper to check if event is invoked by this widget
+    def my_event?(widget, event)
+      return widget == event["ID"]
+    end
+
     # shortcut from Yast namespace to avoid including whole namespace
     # TODO: kill converts in CWM module, to avoid this workaround for funrefs
     def fun_ref(*args)