From d84f8f4fb35f7809ae16905d9e6058ede90dcd2b Mon Sep 17 00:00:00 2001
From: Thomas Nemer <thomas.nemer@fortytwo.fr>
Date: Tue, 11 Nov 2025 18:45:48 +0100
Subject: [PATCH] [#114.3] Add iwyu enforcement to intermediate examples

Add CXX_INCLUDE_WHAT_YOU_USE property to all 4 intermediate examples and fix the include issues identified by iwyu.

Changes:
- Add iwyu enforcement to CMakeLists.txt for all 4 intermediate examples
- Fix missing includes in example source files as reported by iwyu
- Ensure all intermediate examples build successfully with strict include checking

This ensures intermediate examples follow the same include hygiene standards as basic and advanced examples.

Closes #119
---
 .../intermediate/01_nested_panels/CMakeLists.txt |  1 +
 examples/intermediate/01_nested_panels/main.cpp  |  6 ++++++
 .../intermediate/02_responsive_ui/CMakeLists.txt |  1 +
 examples/intermediate/02_responsive_ui/main.cpp  |  4 ++++
 .../03_event_handling/CMakeLists.txt             |  1 +
 examples/intermediate/03_event_handling/main.cpp |  3 ++-
 .../04_dynamic_layout/CMakeLists.txt             |  1 +
 examples/intermediate/04_dynamic_layout/main.cpp | 16 +++++++++++++++-
 8 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/examples/intermediate/01_nested_panels/CMakeLists.txt b/examples/intermediate/01_nested_panels/CMakeLists.txt
index e8d6c85..c2baa48 100644
--- a/examples/intermediate/01_nested_panels/CMakeLists.txt
+++ b/examples/intermediate/01_nested_panels/CMakeLists.txt
@@ -30,4 +30,5 @@ add_dependencies(01_nested_panels format-example-sources)
 # Output to build/examples/intermediate/01_nested_panels/
 set_target_properties(01_nested_panels PROPERTIES
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/examples/intermediate/01_nested_panels"
+    CXX_INCLUDE_WHAT_YOU_USE "${IWYU_PATH};-Xiwyu;--error;-Xiwyu;--verbose=3"
 )
diff --git a/examples/intermediate/01_nested_panels/main.cpp b/examples/intermediate/01_nested_panels/main.cpp
index f54a014..21aea47 100644
--- a/examples/intermediate/01_nested_panels/main.cpp
+++ b/examples/intermediate/01_nested_panels/main.cpp
@@ -19,13 +19,19 @@
 #include <GLFW/glfw3.h>
 #include <bombfork/prong/components/button.h>
 #include <bombfork/prong/components/panel.h>
+#include <bombfork/prong/core/component.h>
 #include <bombfork/prong/core/component_builder.h>
+#include <bombfork/prong/core/component_traits.h>
 #include <bombfork/prong/core/scene.h>
 #include <bombfork/prong/layout/flex_layout.h>
 #include <bombfork/prong/layout/grid_layout.h>
 #include <bombfork/prong/layout/stack_layout.h>
 
+#include <functional>
 #include <iostream>
+#include <memory>
+#include <string>
+#include <utility>
 
 using namespace bombfork::prong;
 using namespace bombfork::prong::layout;
diff --git a/examples/intermediate/02_responsive_ui/CMakeLists.txt b/examples/intermediate/02_responsive_ui/CMakeLists.txt
index 335a8b6..05b9589 100644
--- a/examples/intermediate/02_responsive_ui/CMakeLists.txt
+++ b/examples/intermediate/02_responsive_ui/CMakeLists.txt
@@ -30,4 +30,5 @@ add_dependencies(02_responsive_ui format-example-sources)
 # Output to build/examples/intermediate/02_responsive_ui/
 set_target_properties(02_responsive_ui PROPERTIES
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/examples/intermediate/02_responsive_ui"
+    CXX_INCLUDE_WHAT_YOU_USE "${IWYU_PATH};-Xiwyu;--error;-Xiwyu;--verbose=3"
 )
diff --git a/examples/intermediate/02_responsive_ui/main.cpp b/examples/intermediate/02_responsive_ui/main.cpp
index a7c4ea6..124243a 100644
--- a/examples/intermediate/02_responsive_ui/main.cpp
+++ b/examples/intermediate/02_responsive_ui/main.cpp
@@ -15,12 +15,16 @@
 #include <GLFW/glfw3.h>
 #include <bombfork/prong/components/button.h>
 #include <bombfork/prong/components/panel.h>
+#include <bombfork/prong/core/component.h>
 #include <bombfork/prong/core/component_builder.h>
 #include <bombfork/prong/core/scene.h>
 #include <bombfork/prong/layout/flex_layout.h>
 #include <bombfork/prong/theming/color.h>
 
+#include <functional>
 #include <iostream>
+#include <memory>
+#include <utility>
 
 using namespace bombfork::prong;
 using namespace bombfork::prong::layout;
diff --git a/examples/intermediate/03_event_handling/CMakeLists.txt b/examples/intermediate/03_event_handling/CMakeLists.txt
index e628578..f6c2c98 100644
--- a/examples/intermediate/03_event_handling/CMakeLists.txt
+++ b/examples/intermediate/03_event_handling/CMakeLists.txt
@@ -30,4 +30,5 @@ add_dependencies(03_event_handling format-example-sources)
 # Output to build/examples/intermediate/03_event_handling/
 set_target_properties(03_event_handling PROPERTIES
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/examples/intermediate/03_event_handling"
+    CXX_INCLUDE_WHAT_YOU_USE "${IWYU_PATH};-Xiwyu;--error;-Xiwyu;--verbose=3"
 )
diff --git a/examples/intermediate/03_event_handling/main.cpp b/examples/intermediate/03_event_handling/main.cpp
index 391d574..202fad9 100644
--- a/examples/intermediate/03_event_handling/main.cpp
+++ b/examples/intermediate/03_event_handling/main.cpp
@@ -14,7 +14,6 @@
 #include "../../adapters/glfw_window_adapter.h"
 #include "../../adapters/simple_opengl_renderer.h"
 #include <GLFW/glfw3.h>
-#include <bombfork/prong/components/button.h>
 #include <bombfork/prong/components/panel.h>
 #include <bombfork/prong/core/component.h>
 #include <bombfork/prong/core/component_builder.h>
@@ -25,8 +24,10 @@
 #include <bombfork/prong/theming/color.h>
 
 #include <iostream>
+#include <memory>
 #include <sstream>
 #include <string>
+#include <utility>
 
 using namespace bombfork::prong;
 using namespace bombfork::prong::core;
diff --git a/examples/intermediate/04_dynamic_layout/CMakeLists.txt b/examples/intermediate/04_dynamic_layout/CMakeLists.txt
index b03b44a..14d0d00 100644
--- a/examples/intermediate/04_dynamic_layout/CMakeLists.txt
+++ b/examples/intermediate/04_dynamic_layout/CMakeLists.txt
@@ -30,4 +30,5 @@ add_dependencies(04_dynamic_layout format-example-sources)
 # Output to build/examples/intermediate/04_dynamic_layout/
 set_target_properties(04_dynamic_layout PROPERTIES
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/examples/intermediate/04_dynamic_layout"
+    CXX_INCLUDE_WHAT_YOU_USE "${IWYU_PATH};-Xiwyu;--error;-Xiwyu;--verbose=3"
 )
diff --git a/examples/intermediate/04_dynamic_layout/main.cpp b/examples/intermediate/04_dynamic_layout/main.cpp
index 6f41bea..781a8dd 100644
--- a/examples/intermediate/04_dynamic_layout/main.cpp
+++ b/examples/intermediate/04_dynamic_layout/main.cpp
@@ -17,21 +17,35 @@
 #include <GLFW/glfw3.h>
 #include <bombfork/prong/components/button.h>
 #include <bombfork/prong/components/panel.h>
+#include <bombfork/prong/core/component.h>
 #include <bombfork/prong/core/component_builder.h>
+#include <bombfork/prong/core/component_traits.h>
 #include <bombfork/prong/core/scene.h>
 #include <bombfork/prong/layout/flex_layout.h>
 #include <bombfork/prong/layout/grid_layout.h>
 #include <bombfork/prong/layout/stack_layout.h>
-#include <bombfork/prong/theming/color.h>
 
+#include <functional>
 #include <iostream>
+#include <memory>
 #include <random>
+#include <string>
+#include <utility>
+#include <vector>
 
 using namespace bombfork::prong;
 using namespace bombfork::prong::layout;
 using namespace bombfork::prong::theming;
 using namespace bombfork::prong::examples;
 
+namespace bombfork {
+namespace prong {
+namespace rendering {
+class IRenderer;
+}
+} // namespace prong
+} // namespace bombfork
+
 // Global state for dynamic manipulation
 Panel<>* g_contentPanel = nullptr;
 rendering::IRenderer* g_renderer = nullptr;