[Silabs] Window-app refactor (#27390)

* Window-app refactor.

* Fix WiFi build

* Restyled by whitespace

* Restyled by clang-format

* Fixed misspell in WindowManager.cpp

* Removed obsolete data model usage for Silabs Window App

---------

Co-authored-by: jepenven-silabs <jean-francois.penven@silabs.com>
Co-authored-by: Jean-Francois Penven <67962328+jepenven-silabs@users.noreply.github.com>
Co-authored-by: Restyled.io <commits@restyled.io>

examples/platform/silabs/SiWx917/BUILD.gn

@@ -247,16 +247,13 @@ source_set("siwx917-common") {
     "${wifi_sdk_dir}/ethernetif.cpp",
     "${wifi_sdk_dir}/lwip_netif.cpp",
     "${wifi_sdk_dir}/wfx_notify.cpp",
+    "BaseApplication.cpp",
     "SiWx917/rsi_if.c",
     "SiWx917/wfx_rsi_host.c",
     "init_ccpPlatform.cpp",
     "matter_config.cpp",
   ]
 
-  if (use_base_app) {
-    sources += [ "BaseApplication.cpp" ]
-  }
-
   if (chip_enable_pw_rpc || chip_build_libshell) {
     sources += [ "uart.cpp" ]
   }

examples/platform/silabs/args.gni

@@ -22,5 +22,4 @@ chip_system_project_config_include = "<CHIPProjectConfig.h>"
 
 declare_args() {
   app_data_model = ""
-  use_base_app = true
 }

examples/platform/silabs/efr32/BUILD.gn

@@ -280,14 +280,11 @@ source_set("efr32-common") {
     "${silabs_common_plat_dir}/heap_4_silabs.c",
     "${silabs_common_plat_dir}/silabs_utils.cpp",
     "${silabs_common_plat_dir}/syscalls_stubs.cpp",
+    "BaseApplication.cpp",
     "init_efrPlatform.cpp",
     "matter_config.cpp",
   ]
 
-  if (use_base_app) {
-    sources += [ "BaseApplication.cpp" ]
-  }
-
   if (chip_enable_pw_rpc || chip_build_libshell || enable_openthread_cli) {
     sources += [ "uart.cpp" ]
   }

examples/window-app/silabs/BUILD.gn

@@ -18,9 +18,17 @@ import("//build_overrides/efr32_sdk.gni")
 import("//build_overrides/pigweed.gni")
 
 import("${build_root}/config/defaults.gni")
+import("${efr32_sdk_build_root}/silabs_executable.gni")
+
+import("${chip_root}/examples/common/pigweed/pigweed_rpcs.gni")
 import("${chip_root}/src/platform/device.gni")
 import("${chip_root}/third_party/silabs/silabs_board.gni")
-import("${efr32_sdk_build_root}/silabs_executable.gni")
+
+if (chip_enable_pw_rpc) {
+  import("//build_overrides/pigweed.gni")
+  import("$dir_pw_build/target_types.gni")
+}
+
 assert(current_os == "freertos")
 
 project_dir = "${chip_root}/examples/window-app"
@@ -106,10 +114,10 @@ silabs_executable("window_app") {
   defines = []
 
   sources = [
-    "${project_dir}/common/src/WindowApp.cpp",
-    "${project_dir}/common/src/ZclCallbacks.cpp",
-    "src/WindowAppImpl.cpp",
-    "src/main.cpp",
+    "${examples_common_plat_dir}/main.cpp",
+    "src/AppTask.cpp",
+    "src/WindowManager.cpp",
+    "src/ZclCallbacks.cpp",
   ]
 
   if (!disable_lcd) {