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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
* GObject introspection: Signal implementation
*
* Copyright (C) 2005 Matthias Clasen
* Copyright (C) 2008,2009 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib.h>
#include <girepository/girepository.h>
#include "gibaseinfo-private.h"
#include "girepository-private.h"
#include "gitypelib-internal.h"
#include "gisignalinfo.h"
/**
* GISignalInfo:
*
* `GISignalInfo` represents a signal.
*
* It’s a sub-struct of [class@GIRepository.CallableInfo] and contains a set of
* flags and a class closure.
*
* See [class@GIRepository.CallableInfo] for information on how to retrieve
* arguments and other metadata from the signal.
*
* Since: 2.80
*/
/**
* gi_signal_info_get_flags:
* @info: a #GISignalInfo
*
* Obtain the flags for this signal info.
*
* See [flags@GObject.SignalFlags] for more information about possible flag
* values.
*
* Returns: the flags
* Since: 2.80
*/
GSignalFlags
gi_signal_info_get_flags (GISignalInfo *info)
{
GSignalFlags flags;
GIRealInfo *rinfo = (GIRealInfo *)info;
SignalBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_SIGNAL_INFO (info), 0);
blob = (SignalBlob *)&rinfo->typelib->data[rinfo->offset];
flags = 0;
if (blob->run_first)
flags = flags | G_SIGNAL_RUN_FIRST;
if (blob->run_last)
flags = flags | G_SIGNAL_RUN_LAST;
if (blob->run_cleanup)
flags = flags | G_SIGNAL_RUN_CLEANUP;
if (blob->no_recurse)
flags = flags | G_SIGNAL_NO_RECURSE;
if (blob->detailed)
flags = flags | G_SIGNAL_DETAILED;
if (blob->action)
flags = flags | G_SIGNAL_ACTION;
if (blob->no_hooks)
flags = flags | G_SIGNAL_NO_HOOKS;
return flags;
}
/**
* gi_signal_info_get_class_closure:
* @info: a #GISignalInfo
*
* Obtain the class closure for this signal if one is set.
*
* The class closure is a virtual function on the type that the signal belongs
* to. If the signal lacks a closure, `NULL` will be returned.
*
* Returns: (transfer full) (nullable): the class closure, or `NULL` if none is
* set
* Since: 2.80
*/
GIVFuncInfo *
gi_signal_info_get_class_closure (GISignalInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
SignalBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_SIGNAL_INFO (info), 0);
blob = (SignalBlob *)&rinfo->typelib->data[rinfo->offset];
if (blob->has_class_closure)
return gi_interface_info_get_vfunc ((GIInterfaceInfo *)rinfo->container, blob->class_closure);
return NULL;
}
/**
* gi_signal_info_true_stops_emit:
* @info: a #GISignalInfo
*
* Obtain if the returning `TRUE` in the signal handler will stop the emission
* of the signal.
*
* Returns: `TRUE` if returning `TRUE` stops the signal emission
* Since: 2.80
*/
gboolean
gi_signal_info_true_stops_emit (GISignalInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
SignalBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_SIGNAL_INFO (info), 0);
blob = (SignalBlob *)&rinfo->typelib->data[rinfo->offset];
return blob->true_stops_emit;
}
void
gi_signal_info_class_init (gpointer g_class,
gpointer class_data)
{
GIBaseInfoClass *info_class = g_class;
info_class->info_type = GI_INFO_TYPE_SIGNAL;
}
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