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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/server/wayland_server_controller.h"
#include <memory>
#include "base/atomic_sequence_num.h"
#include "base/command_line.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/memory/ptr_util.h"
#include "base/task/current_thread.h"
#include "components/exo/data_exchange_delegate.h"
#include "components/exo/display.h"
#include "components/exo/input_method_surface_manager.h"
#include "components/exo/notification_surface_manager.h"
#include "components/exo/security_delegate.h"
#include "components/exo/server/wayland_server_handle.h"
#include "components/exo/toast_surface_manager.h"
#include "components/exo/wayland/server.h"
#include "components/exo/wm_helper.h"
namespace exo {
namespace {
WaylandServerController* g_instance = nullptr;
} // namespace
// static
std::unique_ptr<WaylandServerController>
WaylandServerController::CreateIfNecessary(
std::unique_ptr<DataExchangeDelegate> data_exchange_delegate,
std::unique_ptr<SecurityDelegate> security_delegate,
std::unique_ptr<NotificationSurfaceManager> notification_surface_manager,
std::unique_ptr<InputMethodSurfaceManager> input_method_surface_manager,
std::unique_ptr<ToastSurfaceManager> toast_surface_manager) {
return std::make_unique<WaylandServerController>(
std::move(data_exchange_delegate), std::move(security_delegate),
std::move(notification_surface_manager),
std::move(input_method_surface_manager),
std::move(toast_surface_manager));
}
// static
WaylandServerController* WaylandServerController::Get() {
DCHECK(g_instance);
return g_instance;
}
WaylandServerController::~WaylandServerController() {
// TODO(crbug.com/40717074): Investigate if we can eliminate Shutdown
// methods.
display_->Shutdown();
wayland::Server::SetServerGetter(base::NullCallback());
DCHECK_EQ(g_instance, this);
g_instance = nullptr;
}
wayland::Server* WaylandServerController::GetServerForDisplay(
wl_display* display) {
if (default_server_ && default_server_->GetWaylandDisplay() == display) {
return default_server_.get();
}
for (const auto& pair : on_demand_servers_) {
if (pair.second->GetWaylandDisplay() == display) {
return pair.second.get();
}
}
return nullptr;
}
WaylandServerController::WaylandServerController(
std::unique_ptr<DataExchangeDelegate> data_exchange_delegate,
std::unique_ptr<SecurityDelegate> security_delegate,
std::unique_ptr<NotificationSurfaceManager> notification_surface_manager,
std::unique_ptr<InputMethodSurfaceManager> input_method_surface_manager,
std::unique_ptr<ToastSurfaceManager> toast_surface_manager)
: wm_helper_(std::make_unique<WMHelper>()),
display_(
std::make_unique<Display>(std::move(notification_surface_manager),
std::move(input_method_surface_manager),
std::move(toast_surface_manager),
std::move(data_exchange_delegate))) {
DCHECK(!g_instance);
g_instance = this;
default_server_ =
wayland::Server::Create(display_.get(), std::move(security_delegate));
default_server_->StartWithDefaultPath(base::BindOnce([](bool success) {
DCHECK(success) << "Failed to start the default wayland server.";
}));
wayland::Server::SetServerGetter(base::BindRepeating(
&WaylandServerController::GetServerForDisplay, base::Unretained(this)));
}
void WaylandServerController::ListenOnSocket(
std::unique_ptr<SecurityDelegate> security_delegate,
base::ScopedFD socket,
base::OnceCallback<void(std::unique_ptr<WaylandServerHandle>)> callback) {
std::unique_ptr<wayland::Server> server =
wayland::Server::Create(display_.get(), std::move(security_delegate));
auto* server_ptr = server.get();
auto start_callback = base::BindOnce(&WaylandServerController::OnSocketAdded,
weak_factory_.GetWeakPtr(),
std::move(server), std::move(callback));
server_ptr->StartWithFdAsync(std::move(socket), std::move(start_callback));
}
void WaylandServerController::OnSocketAdded(
std::unique_ptr<wayland::Server> server,
base::OnceCallback<void(std::unique_ptr<WaylandServerHandle>)> callback,
bool success) {
if (!success) {
std::move(callback).Run(nullptr);
return;
}
// WrapUnique() is needed since the constructor is private.
auto handle = base::WrapUnique(new WaylandServerHandle());
on_demand_servers_.emplace(handle.get(), std::move(server));
std::move(callback).Run(std::move(handle));
}
void WaylandServerController::CloseSocket(WaylandServerHandle* server) {
on_demand_servers_.erase(server);
}
} // namespace exo
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