Everywhere: Replace Model::update() with Model::invalidate()

Most of the models were just calling did_update anyway, which is
pointless since it can be unified to the base Model class. Instead, code
calling update() will now call invalidate(), which functions identically
and is more obvious in what it does.

Additionally, a default implementation is provided, which removes the
need to add empty implementations of update() for each model subclass.

Co-Authored-By: Ali Mohammad Pur <ali.mpfard@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/Userland/Demos/WidgetGallery/GalleryModels.h b/Userland/Demos/WidgetGallery/GalleryModels.h
index 038a26b9cb..85069ab3bc 100644
--- a/Userland/Demos/WidgetGallery/GalleryModels.h
+++ b/Userland/Demos/WidgetGallery/GalleryModels.h
@@ -51,7 +51,7 @@ public:
         }
         return {};
     }
-    virtual void update() override
+    virtual void update()
     {
         m_cursors.clear();
 
@@ -131,7 +131,7 @@ public:
         }
         return {};
     }
-    virtual void update() override
+    virtual void update()
     {
         m_icon_sets.clear();