remove on_click from button and add it to the Widget class

src/Button.cpp

@@ -35,10 +35,4 @@ void Button::on_paint() {
     painter.fill();
 }
 
-void Button::on_activation_update(ActivationUpdateEvent &event) {
-    if (event.activation_status() == false) {
-        on_click();
-    }
-}
-
 }

src/Button.hpp

@@ -1,3 +1,5 @@
+#pragma once
+
 #include <string>
 #include <functional>
 #include "Widget.hpp"
@@ -5,8 +7,6 @@
 #include "pango/pango-font.h"
 #include "Window.hpp"
 
-#pragma once
-
 namespace Raven {
 
 class Button : public Widget {
@@ -15,18 +15,12 @@ public:
         : Widget(WidgetType::Button)
         , m_text(text) {}
 
-    std::function<void()> on_click { [](){} };
-
     void set_text(std::string text);
     std::string &text() { return m_text; }
 protected:
     void on_paint();
     void on_init();
-    void on_activation_update(ActivationUpdateEvent &event);
 private:
-    void update_color();
-    void recompute_text_size();
-
     std::string m_text;
 };
 

src/Widget.cpp

@@ -257,6 +257,10 @@ void Widget::handle_mouse_button_event(MouseButtonEvent &event) {
         auto activation_update_event = ActivationUpdateEvent(update_activation_to);
         on_activation_update(activation_update_event);
 
+        if (update_activation_to == false) {
+            on_click();
+        }
+
         if (m_style->update_background()) {
             repaint();
         }

src/Widget.hpp

@@ -44,6 +44,7 @@ public:
     virtual ~Widget() {};
 
     std::function<void(Event&)> on_event { [](Event&){} };
+    std::function<void()> on_click { [](){} };
 
     bool fit_text(std::string &text);