LibWeb: Add Page abstraction between PageView and main Frame

* A PageView is a view onto a Page object.
* A Page always has a main Frame (root of Frame tree.)
* Page has a PageClient. PageView is a PageClient.

The goal here is to allow building another kind of view onto
a Page while keeping the rest of LibWeb intact.

1 files changed, 2 insertions, 2 deletions

diff --git a/Libraries/LibWeb/Layout/LayoutWidget.cpp b/Libraries/LibWeb/Layout/LayoutWidget.cpp
index e8f68bf4b2..852a36d218 100644
--- a/Libraries/LibWeb/Layout/LayoutWidget.cpp
+++ b/Libraries/LibWeb/Layout/LayoutWidget.cpp
@@ -60,8 +60,8 @@ void LayoutWidget::did_set_rect()
 void LayoutWidget::update_widget()
 {
     auto adjusted_widget_position = rect().location().to_int_point();
-    if (auto* page_view = document().frame()->page_view())
-        adjusted_widget_position.move_by(-page_view->horizontal_scrollbar().value(), -page_view->vertical_scrollbar().value());
+    auto& page_view = static_cast<const PageView&>(document().frame()->page().client());
+    adjusted_widget_position.move_by(-page_view.horizontal_scrollbar().value(), -page_view.vertical_scrollbar().value());
     widget().move_to(adjusted_widget_position);
 }