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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.
*
* 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 <glib.h>
#include <girepository.h>
#include "girepository-private.h"
#include "gitypelib-internal.h"
/**
* SECTION:gisignalinfo
* @Short_description: Struct representing a signal
* @Title: GISignalInfo
*
* GISignalInfo represents a signal. It's a sub-struct of #GICallableInfo
* and contains a set of flags and a class closure.
*
* See #GICallableInfo for information on how to retreive arguments
* and other metadata from the signal.
*
* <refsect1 id="gi-gisignalinfo.struct-hierarchy" role="struct_hierarchy">
* <title role="struct_hierarchy.title">Struct hierarchy</title>
* <synopsis>
* <link linkend="gi-GIBaseInfo">GIBaseInfo</link>
* +----<link linkend="gi-GICallableInfo">GICallableInfo</link>
* +----<link linkend="gi-GIFunctionInfo">GIFunctionInfo</link>
* +----GISignalInfo
* +----<link linkend="gi-GIVFuncInfo">GIVFuncInfo</link>
* </synopsis>
* </refsect1>
*/
/**
* g_signal_info_get_flags:
* @info: a #GISignalInfo
*
* Obtain the flags for this signal info. See #GSignalFlags for
* more information about possible flag values.
*
* Returns: the flags
*/
GSignalFlags
g_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;
}
/**
* g_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): the class closure or %NULL
*/
GIVFuncInfo *
g_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 g_interface_info_get_vfunc ((GIInterfaceInfo *)rinfo->container, blob->class_closure);
return NULL;
}
/**
* g_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
*/
gboolean
g_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;
}
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