Glib::Dispatcher: Add const versions of emit() and operator()()

and deprecate the non-const versions.
Fixes #103

3 files changed, 30 insertions, 1 deletions

diff --git a/examples/thread/dispatcher2.cc b/examples/thread/dispatcher2.cc
index 98011617..46b5c3d1 100644
--- a/examples/thread/dispatcher2.cc
+++ b/examples/thread/dispatcher2.cc
@@ -47,7 +47,7 @@ public:
 private:
   unsigned int time_;
   Glib::Dispatcher signal_increment_;
-  Glib::Dispatcher* signal_finished_ptr_;
+  const Glib::Dispatcher* signal_finished_ptr_;
 
   std::mutex startup_mutex_;
   std::condition_variable startup_cond_;
diff --git a/glib/glibmm/dispatcher.cc b/glib/glibmm/dispatcher.cc
index 083f948e..dd7dff8d 100644
--- a/glib/glibmm/dispatcher.cc
+++ b/glib/glibmm/dispatcher.cc
@@ -498,6 +498,7 @@ Dispatcher::~Dispatcher() noexcept
   DispatchNotifier::unreference_instance(impl_->notifier_, impl_);
 }
 
+#ifndef GLIBMM_DISABLE_DEPRECATED
 void
 Dispatcher::emit()
 {
@@ -509,6 +510,19 @@ Dispatcher::operator()()
 {
   impl_->notifier_->send_notification(impl_);
 }
+#endif // GLIBMM_DISABLE_DEPRECATED
+
+void
+Dispatcher::emit() const
+{
+  impl_->notifier_->send_notification(impl_);
+}
+
+void
+Dispatcher::operator()() const
+{
+  impl_->notifier_->send_notification(impl_);
+}
 
 sigc::connection
 Dispatcher::connect(const sigc::slot<void()>& slot)
diff --git a/glib/glibmm/dispatcher.h b/glib/glibmm/dispatcher.h
index 83bd24e9..b27da57b 100644
--- a/glib/glibmm/dispatcher.h
+++ b/glib/glibmm/dispatcher.h
@@ -80,8 +80,23 @@ public:
   explicit Dispatcher(const Glib::RefPtr<MainContext>& context);
   ~Dispatcher() noexcept;
 
+#ifndef GLIBMM_DISABLE_DEPRECATED
+  /** Same as the const version.
+   * @deprecated 2.76: Use the const version instead.
+   */
   void emit();
+  /** Same as the const version.
+   * @deprecated 2.76: Use the const version instead.
+   */
   void operator()();
+#endif // GLIBMM_DISABLE_DEPRECATED
+
+  /** @newin{2,76}
+   */
+  void emit() const;
+  /** @newin{2,76}
+   */
+  void operator()() const;
 
   sigc::connection connect(const sigc::slot<void()>& slot);
   /** @newin{2,48}