LibGUI: Implement very bad widget system :D

userspace/libraries/LibGUI/include/LibGUI/Widget/Grid.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <LibGUI/Widget/Widget.h>
+
+namespace LibGUI::Widget
+{
+
+	class Grid : public Widget
+	{
+	public:
+		static BAN::ErrorOr<BAN::RefPtr<Grid>> create(BAN::RefPtr<Widget> parent, uint32_t cols, uint32_t rows, uint32_t color = color_invisible, Rectangle geometry = {});
+
+		BAN::ErrorOr<void> set_widget_position(BAN::RefPtr<Widget> widget, uint32_t col, uint32_t col_span, uint32_t row, uint32_t row_span);
+
+	protected:
+		Grid(BAN::RefPtr<Widget> parent, Rectangle geometry, uint32_t cols, uint32_t rows)
+			: Widget(parent, geometry)
+			, m_cols(cols)
+			, m_rows(rows)
+		{ }
+
+		BAN::ErrorOr<void> update_geometry_impl() override;
+
+	private:
+		struct GridElement
+		{
+			BAN::RefPtr<Widget> widget;
+			uint32_t col;
+			uint32_t col_span;
+			uint32_t row;
+			uint32_t row_span;
+		};
+
+		Rectangle grid_element_area(const GridElement& element) const;
+
+	private:
+		const uint32_t m_cols;
+		const uint32_t m_rows;
+		BAN::Vector<GridElement> m_grid_elements;
+	};
+
+}