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/* Copyright (C) 2010 The giomm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gio/gio.h>
#include <glibmm/error.h>
#include <glibmm/exceptionhandler.h>
#include <giomm/cancellable.h>
#include <giomm/slot_async.h>
namespace // anonymous
{
using AsyncInitable_init_async_vfunc_functype = void (*) (GAsyncInitable* self,
int io_priority, GCancellable* cancellable, GAsyncReadyCallback callback,
gpointer user_data);
using AsyncInitable_init_finish_vfunc_functype = gboolean (*) (GAsyncInitable* self,
GAsyncResult* res, GError** error);
AsyncInitable_init_async_vfunc_functype AsyncInitable_init_async_vfunc_funcptr;
AsyncInitable_init_finish_vfunc_functype AsyncInitable_init_finish_vfunc_funcptr;
extern "C"
{
static void
AsyncInitable_init_async_vfunc_c_callback(GAsyncInitable* self, int io_priority,
GCancellable* cancellable, GAsyncReadyCallback callback, gpointer user_data)
{
AsyncInitable_init_async_vfunc_funcptr(self, io_priority, cancellable, callback, user_data);
}
static gboolean
AsyncInitable_init_finish_vfunc_c_callback(GAsyncInitable* self,
GAsyncResult* res, GError** error)
{
return AsyncInitable_init_finish_vfunc_funcptr(self, res, error);
}
} // extern "C"
} // anonymous namespace
namespace Gio
{
void
AsyncInitable::init_async(
const SlotAsyncReady& slot, const Glib::RefPtr<Cancellable>& cancellable, int io_priority)
{
// Create a copy of the slot.
// A pointer to it will be passed through the callback's data parameter
// and deleted in the callback.
auto slot_copy = new SlotAsyncReady(slot);
g_async_initable_init_async(
gobj(), io_priority, Glib::unwrap(cancellable), &SignalProxy_async_callback, slot_copy);
}
void
AsyncInitable::init_async(const SlotAsyncReady& slot, int io_priority)
{
// Create a copy of the slot.
// A pointer to it will be passed through the callback's data parameter
// and deleted in the callback.
auto slot_copy = new SlotAsyncReady(slot);
g_async_initable_init_async(gobj(), io_priority, nullptr, &SignalProxy_async_callback, slot_copy);
}
void
AsyncInitable_Class::init_async_vfunc_callback(GAsyncInitable* self, int io_priority,
GCancellable* cancellable, GAsyncReadyCallback callback, gpointer user_data)
{
const auto obj_base =
static_cast<Glib::ObjectBase*>(Glib::ObjectBase::_get_current_wrapper((GObject*)self));
// Non-gtkmmproc-generated custom classes implicitly call the default
// Glib::ObjectBase constructor, which sets is_derived_. But gtkmmproc-
// generated classes can use this optimisation, which avoids the unnecessary
// parameter conversions if there is no possibility of the virtual function
// being overridden:
if (obj_base && obj_base->is_derived_())
{
const auto obj = dynamic_cast<CppObjectType* const>(obj_base);
if (obj) // This can be nullptr during destruction.
{
try // Trap C++ exceptions which would normally be lost because this is a C callback.
{
// Get the slot.
Gio::SlotAsyncReady* the_slot = static_cast<Gio::SlotAsyncReady*>(user_data);
// Call the virtual member method, which derived classes might override.
obj->init_async_vfunc(*the_slot, Glib::wrap(cancellable, true), io_priority);
return;
}
catch (...)
{
Glib::exception_handlers_invoke();
}
}
}
const auto base = static_cast<BaseClassType*>(
g_type_interface_peek_parent( // Get the parent interface of the interface (The original
// underlying C interface).
g_type_interface_peek(
G_OBJECT_GET_CLASS(self), CppObjectType::get_type()) // Get the interface.
));
// Call the original underlying C function:
if (base && base->init_async)
(*base->init_async)(self, io_priority, cancellable, callback, user_data);
}
void
Gio::AsyncInitable::init_async_vfunc(
const SlotAsyncReady& slot, const Glib::RefPtr<Cancellable>& cancellable, int io_priority)
{
const auto base = static_cast<BaseClassType*>(
g_type_interface_peek_parent( // Get the parent interface of the interface (The original
// underlying C interface).
g_type_interface_peek(
G_OBJECT_GET_CLASS(gobject_), CppObjectType::get_type()) // Get the interface.
));
if (base && base->init_async)
{
(*base->init_async)(gobj(), io_priority, const_cast<GCancellable*>(Glib::unwrap(cancellable)),
&SignalProxy_async_callback, const_cast<SlotAsyncReady*>(&slot));
}
}
gboolean
AsyncInitable_Class::init_finish_vfunc_callback(
GAsyncInitable* self, GAsyncResult* res, GError** error)
{
const auto obj_base =
static_cast<Glib::ObjectBase*>(Glib::ObjectBase::_get_current_wrapper((GObject*)self));
// Non-gtkmmproc-generated custom classes implicitly call the default
// Glib::ObjectBase constructor, which sets is_derived_. But gtkmmproc-
// generated classes can use this optimisation, which avoids the unnecessary
// parameter conversions if there is no possibility of the virtual function
// being overridden:
if (obj_base && obj_base->is_derived_())
{
const auto obj = dynamic_cast<CppObjectType* const>(obj_base);
if (obj) // This can be nullptr during destruction.
{
try // Trap C++ exceptions which would normally be lost because this is a C callback.
{
// Call the virtual member method, which derived classes might override.
return static_cast<int>(obj->init_finish_vfunc(Glib::wrap(res, true)));
}
catch (...)
{
Glib::exception_handlers_invoke();
}
}
}
const auto base = static_cast<BaseClassType*>(
g_type_interface_peek_parent( // Get the parent interface of the interface (The original
// underlying C interface).
g_type_interface_peek(
G_OBJECT_GET_CLASS(self), CppObjectType::get_type()) // Get the interface.
));
// Call the original underlying C function:
if (base && base->init_finish)
return (*base->init_finish)(self, res, error);
using RType = gboolean;
return RType();
}
bool
Gio::AsyncInitable::init_finish_vfunc(const Glib::RefPtr<AsyncResult>& res)
{
const auto base = static_cast<BaseClassType*>(
g_type_interface_peek_parent( // Get the parent interface of the interface (The original
// underlying C interface).
g_type_interface_peek(
G_OBJECT_GET_CLASS(gobject_), CppObjectType::get_type()) // Get the interface.
));
if (base && base->init_finish)
{
GError* gerror = nullptr;
bool const result = (*base->init_finish)(gobj(), Glib::unwrap(res), &gerror);
if (gerror)
::Glib::Error::throw_exception(gerror);
return result;
}
using RType = bool;
return RType();
}
} // namespace Gio
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