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147 lines
4.0 KiB
C
147 lines
4.0 KiB
C
/* GObject introspection: Signal implementation
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*
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* Copyright (C) 2005 Matthias Clasen
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* Copyright (C) 2008,2009 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <glib.h>
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#include <girepository.h>
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#include "girepository-private.h"
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#include "gitypelib-internal.h"
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/**
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* SECTION:gisignalinfo
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* @Short_description: Struct representing a signal
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* @Title: GISignalInfo
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*
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* GISignalInfo represents a signal. It's a sub-struct of #GICallableInfo
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* and contains a set of flags and a class closure.
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*
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* See #GICallableInfo for information on how to retreive arguments
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* and other metadata from the signal.
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*
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* <refsect1 id="gi-gisignalinfo.struct-hierarchy" role="struct_hierarchy">
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* <title role="struct_hierarchy.title">Struct hierarchy</title>
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* <synopsis>
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* <link linkend="gi-GIBaseInfo">GIBaseInfo</link>
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* +----<link linkend="gi-GICallableInfo">GICallableInfo</link>
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* +----<link linkend="gi-GIFunctionInfo">GIFunctionInfo</link>
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* +----GISignalInfo
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* +----<link linkend="gi-GIVFuncInfo">GIVFuncInfo</link>
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* </synopsis>
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* </refsect1>
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*/
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/**
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* g_signal_info_get_flags:
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* @info: a #GISignalInfo
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*
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* Obtain the flags for this signal info. See #GSignalFlags for
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* more information about possible flag values.
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*
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* Returns: the flags
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*/
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GSignalFlags
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g_signal_info_get_flags (GISignalInfo *info)
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{
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GSignalFlags flags;
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GIRealInfo *rinfo = (GIRealInfo *)info;
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SignalBlob *blob;
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g_return_val_if_fail (info != NULL, 0);
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g_return_val_if_fail (GI_IS_SIGNAL_INFO (info), 0);
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blob = (SignalBlob *)&rinfo->typelib->data[rinfo->offset];
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flags = 0;
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if (blob->run_first)
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flags = flags | G_SIGNAL_RUN_FIRST;
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if (blob->run_last)
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flags = flags | G_SIGNAL_RUN_LAST;
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if (blob->run_cleanup)
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flags = flags | G_SIGNAL_RUN_CLEANUP;
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if (blob->no_recurse)
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flags = flags | G_SIGNAL_NO_RECURSE;
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if (blob->detailed)
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flags = flags | G_SIGNAL_DETAILED;
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if (blob->action)
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flags = flags | G_SIGNAL_ACTION;
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if (blob->no_hooks)
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flags = flags | G_SIGNAL_NO_HOOKS;
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return flags;
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}
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/**
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* g_signal_info_get_class_closure:
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* @info: a #GISignalInfo
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*
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* Obtain the class closure for this signal if one is set. The class
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* closure is a virtual function on the type that the signal belongs to.
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* If the signal lacks a closure %NULL will be returned.
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*
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* Returns: the class closure or %NULL
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*/
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GIVFuncInfo *
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g_signal_info_get_class_closure (GISignalInfo *info)
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{
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GIRealInfo *rinfo = (GIRealInfo *)info;
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SignalBlob *blob;
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g_return_val_if_fail (info != NULL, 0);
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g_return_val_if_fail (GI_IS_SIGNAL_INFO (info), 0);
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blob = (SignalBlob *)&rinfo->typelib->data[rinfo->offset];
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if (blob->has_class_closure)
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return g_interface_info_get_vfunc ((GIInterfaceInfo *)rinfo->container, blob->class_closure);
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return NULL;
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}
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/**
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* g_signal_info_true_stops_emit:
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* @info: a #GISignalInfo
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*
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* Obtain if the returning true in the signal handler will
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* stop the emission of the signal.
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*
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* Returns: %TRUE if returning true stops the signal emission
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*/
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gboolean
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g_signal_info_true_stops_emit (GISignalInfo *info)
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{
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GIRealInfo *rinfo = (GIRealInfo *)info;
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SignalBlob *blob;
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g_return_val_if_fail (info != NULL, 0);
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g_return_val_if_fail (GI_IS_SIGNAL_INFO (info), 0);
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blob = (SignalBlob *)&rinfo->typelib->data[rinfo->offset];
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return blob->true_stops_emit;
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}
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