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#include "window_manager.hpp"
#include "cru/platform/win/win_application.hpp"
#include "cru/platform/win/win_native_window.hpp"
#include <assert.h>
namespace cru::platform::win {
LRESULT __stdcall GeneralWndProc(HWND hWnd, UINT Msg, WPARAM wParam,
LPARAM lParam) {
auto window = WinApplication::GetInstance()->GetWindowManager()->FromHandle(hWnd);
LRESULT result;
if (window != nullptr &&
window->HandleNativeWindowMessage(hWnd, Msg, wParam, lParam, &result))
return result;
return DefWindowProc(hWnd, Msg, wParam, lParam);
}
WindowManager::WindowManager(WinApplication* application) {
application_ = application;
general_window_class_ = std::make_shared<WindowClass>(
L"CruUIWindowClass", GeneralWndProc,
application->GetInstanceHandle());
}
void WindowManager::RegisterWindow(HWND hwnd, WinNativeWindow* window) {
assert(window_map_.count(hwnd) == 0); // The hwnd is already in the map.
window_map_.emplace(hwnd, window);
}
void WindowManager::UnregisterWindow(HWND hwnd) {
const auto find_result = window_map_.find(hwnd);
assert(find_result != window_map_.end()); // The hwnd is not in the map.
window_map_.erase(find_result);
if (window_map_.empty()) application_->Quit(0);
}
WinNativeWindow* WindowManager::FromHandle(HWND hwnd) {
const auto find_result = window_map_.find(hwnd);
if (find_result == window_map_.end())
return nullptr;
else
return find_result->second;
}
std::vector<WinNativeWindow*> WindowManager::GetAllWindows() const {
std::vector<WinNativeWindow*> windows;
for (auto [key, value] : window_map_) windows.push_back(value);
return windows;
}
}
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