ladybird/LibGUI/GMenuBar.cpp
Andreas Kling 57ff293a51 LibGUI: Implement nested event loops to support dialog boxes.
This patch adds a simple GMessageBox that can run in a nested event loop.
Here's how you use it:

    GMessageBox box("Message text here", "Message window title");
    int result = box.exec();

The next step is to make the WindowServer respect the modality flag of
these windows and prevent interaction with other windows in the same
process until the modal window has been closed.
2019-03-19 00:01:02 +01:00

61 lines
1.7 KiB
C++

#include <LibGUI/GMenuBar.h>
#include <LibGUI/GEventLoop.h>
GMenuBar::GMenuBar()
{
}
GMenuBar::~GMenuBar()
{
unrealize_menubar();
}
void GMenuBar::add_menu(OwnPtr<GMenu>&& menu)
{
m_menus.append(move(menu));
}
int GMenuBar::realize_menubar()
{
WSAPI_ClientMessage request;
request.type = WSAPI_ClientMessage::Type::CreateMenubar;
WSAPI_ServerMessage response = GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidCreateMenubar);
return response.menu.menubar_id;
}
void GMenuBar::unrealize_menubar()
{
if (!m_menubar_id)
return;
WSAPI_ClientMessage request;
request.type = WSAPI_ClientMessage::Type::DestroyMenubar;
request.menu.menubar_id = m_menubar_id;
GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidDestroyMenubar);
m_menubar_id = 0;
}
void GMenuBar::notify_added_to_application(Badge<GApplication>)
{
ASSERT(!m_menubar_id);
m_menubar_id = realize_menubar();
ASSERT(m_menubar_id > 0);
for (auto& menu : m_menus) {
ASSERT(menu);
int menu_id = menu->realize_menu();
ASSERT(menu_id > 0);
WSAPI_ClientMessage request;
request.type = WSAPI_ClientMessage::Type::AddMenuToMenubar;
request.menu.menubar_id = m_menubar_id;
request.menu.menu_id = menu_id;
GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidAddMenuToMenubar);
}
WSAPI_ClientMessage request;
request.type = WSAPI_ClientMessage::Type::SetApplicationMenubar;
request.menu.menubar_id = m_menubar_id;
GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidSetApplicationMenubar);
}
void GMenuBar::notify_removed_from_application(Badge<GApplication>)
{
unrealize_menubar();
}