flutter::WindowProcDelegateManager Class Reference

#include <window_proc_delegate_manager.h>

Public Member Functions
	WindowProcDelegateManager ()
	~WindowProcDelegateManager ()
void	RegisterTopLevelWindowProcDelegate (FlutterDesktopWindowProcCallback callback, void *user_data)
void	UnregisterTopLevelWindowProcDelegate (FlutterDesktopWindowProcCallback callback)
std::optional< LRESULT >	OnTopLevelWindowProc (HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam) const

Detailed Description

Definition at line 20 of file window_proc_delegate_manager.h.

Constructor & Destructor Documentation

WindowProcDelegateManager()

flutter::WindowProcDelegateManager::WindowProcDelegateManager ( )

explicitdefault

~WindowProcDelegateManager()

flutter::WindowProcDelegateManager::~WindowProcDelegateManager ( )

default

References callback, and user_data.

Member Function Documentation

OnTopLevelWindowProc()

std::optional< LRESULT > flutter::WindowProcDelegateManager::OnTopLevelWindowProc	(	HWND	hwnd,
		UINT	message,
		WPARAM	wparam,
		LPARAM	lparam
	)		const

Definition at line 37 of file window_proc_delegate_manager.cc.

                         {
  std::optional<LRESULT> result;
  for (const auto& delegate : delegates_) {
    LPARAM handler_result;
    // Stop as soon as any delegate indicates that it has handled the message.
    if (delegate.callback(hwnd, message, wparam, lparam, delegate.user_data,
                          &handler_result)) {
      result = handler_result;
      break;
    }
  }
  return result;
}

References message.

Referenced by flutter::HostWindow::HandleMessage().

RegisterTopLevelWindowProcDelegate()

void flutter::WindowProcDelegateManager::RegisterTopLevelWindowProcDelegate	(	FlutterDesktopWindowProcCallback	callback,
		void *	user_data
	)

Definition at line 16 of file window_proc_delegate_manager.cc.

                     {
  UnregisterTopLevelWindowProcDelegate(callback);
 
  delegates_.push_back(WindowProcDelegate{
      .callback = callback,
      .user_data = user_data,
  });
}

References callback, UnregisterTopLevelWindowProcDelegate(), and user_data.

Referenced by flutter::testing::TEST().

UnregisterTopLevelWindowProcDelegate()

void flutter::WindowProcDelegateManager::UnregisterTopLevelWindowProcDelegate

(

FlutterDesktopWindowProcCallback

callback

)

Definition at line 27 of file window_proc_delegate_manager.cc.

                                               {
  delegates_.erase(
      std::remove_if(delegates_.begin(), delegates_.end(),
                     [&callback](const WindowProcDelegate& delegate) {
                       return delegate.callback == callback;
                     }),
      delegates_.end());
}

References callback.

Referenced by RegisterTopLevelWindowProcDelegate().

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The documentation for this class was generated from the following files:

• shell/platform/windows/window_proc_delegate_manager.h
• shell/platform/windows/window_proc_delegate_manager.cc