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Merge branch 'wip/chergert/add-gbindinggroup' into 'main'
Add GBindingGroup and GSignalGroup See merge request GNOME/glib!2235
This commit is contained in:
Sebastian Dröge
commit
e15de9a83e
@ -81,9 +81,11 @@
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<xi:include href="xml/gparamspec.xml" />
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<xi:include href="xml/value_collection.xml" />
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<xi:include href="xml/signals.xml" />
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<xi:include href="xml/gsignalgroup.xml" />
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<xi:include href="xml/gclosure.xml" />
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<xi:include href="xml/value_arrays.xml" />
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<xi:include href="xml/gbinding.xml" />
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<xi:include href="xml/gbindinggroup.xml" />
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</reference>
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<reference label="III">
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<title>Tools Reference</title>
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@ -1006,3 +1006,43 @@ G_IS_BINDING
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g_binding_flags_get_type
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g_binding_get_type
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</SECTION>
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<SECTION>
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<FILE>gbindinggroup</FILE>
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GBindingGroup
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g_binding_group_new
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g_binding_group_dup_source
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g_binding_group_set_source
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g_binding_group_bind
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g_binding_group_bind_full
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g_binding_group_bind_with_closures
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<SUBSECTION Standard>
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G_TYPE_BINDING_GROUP
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G_TYPE_BINDING_GROUP_CLASS
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G_BINDING_GROUP
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G_IS_BINDING_GROUP
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<SUBSECTION Private>
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g_binding_group_get_type
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</SECTION>
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<SECTION>
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<FILE>gsignalgroup</FILE>
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GSignalGroup
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g_signal_group_block
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g_signal_group_connect
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g_signal_group_connect_after
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g_signal_group_connect_data
|
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g_signal_group_connect_object
|
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g_signal_group_connect_swapped
|
||||
g_signal_group_dup_target
|
||||
g_signal_group_get_type
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||||
g_signal_group_new
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g_signal_group_set_target
|
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g_signal_group_unblock
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<SUBSECTION Standard>
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G_IS_SIGNAL_GROUP
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G_SIGNAL_GROUP
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G_TYPE_SIGNAL_GROUP
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<SUBSECTION Private>
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g_signal_group_get_type
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</SECTION>
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@ -20,6 +20,7 @@
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#define __GLIB_GOBJECT_H_INSIDE__
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#include <gobject/gbinding.h>
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#include <gobject/gbindinggroup.h>
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#include <gobject/gboxed.h>
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#include <gobject/genums.h>
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#include <gobject/glib-enumtypes.h>
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@ -27,6 +28,7 @@
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#include <gobject/gparam.h>
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#include <gobject/gparamspecs.h>
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#include <gobject/gsignal.h>
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#include <gobject/gsignalgroup.h>
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#include <gobject/gsourceclosure.h>
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#include <gobject/gtype.h>
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#include <gobject/gtypemodule.h>
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679
gobject/gbindinggroup.c
Normal file
679
gobject/gbindinggroup.c
Normal file
@ -0,0 +1,679 @@
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/* GObject - GLib Type, Object, Parameter and Signal Library
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*
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* Copyright (C) 2015-2022 Christian Hergert <christian@hergert.me>
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* Copyright (C) 2015 Garrett Regier <garrettregier@gmail.com>
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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 2.1 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
|
||||
* 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 License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#include "config.h"
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#include "glib.h"
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#include "glibintl.h"
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#include "gbindinggroup.h"
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#include "gparamspecs.h"
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/**
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* SECTION:gbindinggroup
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* @Title: GBindingGroup
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* @Short_description: Binding multiple properties as a group
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* @include: glib-object.h
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*
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* The #GBindingGroup can be used to bind multiple properties
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* from an object collectively.
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*
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* Use the various methods to bind properties from a single source
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* object to multiple destination objects. Properties can be bound
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* bidirectionally and are connected when the source object is set
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* with g_binding_group_set_source().
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*
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* Since: 2.72
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*/
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#if 0
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# define DEBUG_BINDINGS
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#endif
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struct _GBindingGroup
|
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{
|
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GObject parent_instance;
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GMutex mutex;
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GObject *source; /* (owned weak) */
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GPtrArray *lazy_bindings; /* (owned) (element-type LazyBinding) */
|
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};
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typedef struct _GBindingGroupClass
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{
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GObjectClass parent_class;
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} GBindingGroupClass;
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typedef struct
|
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{
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GBindingGroup *group; /* (unowned) */
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const char *source_property; /* (interned) */
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const char *target_property; /* (interned) */
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GObject *target; /* (owned weak) */
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GBinding *binding; /* (unowned) */
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gpointer user_data;
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GDestroyNotify user_data_destroy;
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gpointer transform_to; /* (nullable) (owned) */
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gpointer transform_from; /* (nullable) (owned) */
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GBindingFlags binding_flags;
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guint using_closures : 1;
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} LazyBinding;
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G_DEFINE_TYPE (GBindingGroup, g_binding_group, G_TYPE_OBJECT)
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typedef enum
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{
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PROP_SOURCE = 1,
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N_PROPS
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} GBindingGroupProperty;
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static void lazy_binding_free (gpointer data);
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||||
static GParamSpec *properties[N_PROPS];
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static void
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g_binding_group_connect (GBindingGroup *self,
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LazyBinding *lazy_binding)
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{
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GBinding *binding;
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g_assert (G_IS_BINDING_GROUP (self));
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g_assert (self->source != NULL);
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g_assert (lazy_binding != NULL);
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g_assert (lazy_binding->binding == NULL);
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g_assert (lazy_binding->target != NULL);
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g_assert (lazy_binding->target_property != NULL);
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g_assert (lazy_binding->source_property != NULL);
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#ifdef DEBUG_BINDINGS
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{
|
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GFlagsClass *flags_class;
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g_autofree gchar *flags_str = NULL;
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||||
flags_class = g_type_class_ref (G_TYPE_BINDING_FLAGS);
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flags_str = g_flags_to_string (flags_class, lazy_binding->binding_flags);
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||||
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g_print ("Binding %s(%p):%s to %s(%p):%s (flags=%s)\n",
|
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G_OBJECT_TYPE_NAME (self->source),
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self->source,
|
||||
lazy_binding->source_property,
|
||||
G_OBJECT_TYPE_NAME (lazy_binding->target),
|
||||
lazy_binding->target,
|
||||
lazy_binding->target_property,
|
||||
flags_str);
|
||||
|
||||
g_type_class_unref (flags_class);
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||||
}
|
||||
#endif
|
||||
|
||||
if (!lazy_binding->using_closures)
|
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binding = g_object_bind_property_full (self->source,
|
||||
lazy_binding->source_property,
|
||||
lazy_binding->target,
|
||||
lazy_binding->target_property,
|
||||
lazy_binding->binding_flags,
|
||||
lazy_binding->transform_to,
|
||||
lazy_binding->transform_from,
|
||||
lazy_binding->user_data,
|
||||
NULL);
|
||||
else
|
||||
binding = g_object_bind_property_with_closures (self->source,
|
||||
lazy_binding->source_property,
|
||||
lazy_binding->target,
|
||||
lazy_binding->target_property,
|
||||
lazy_binding->binding_flags,
|
||||
lazy_binding->transform_to,
|
||||
lazy_binding->transform_from);
|
||||
|
||||
lazy_binding->binding = binding;
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_disconnect (LazyBinding *lazy_binding)
|
||||
{
|
||||
g_assert (lazy_binding != NULL);
|
||||
|
||||
if (lazy_binding->binding != NULL)
|
||||
{
|
||||
g_binding_unbind (lazy_binding->binding);
|
||||
lazy_binding->binding = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group__source_weak_notify (gpointer data,
|
||||
GObject *where_object_was)
|
||||
{
|
||||
GBindingGroup *self = data;
|
||||
guint i;
|
||||
|
||||
g_assert (G_IS_BINDING_GROUP (self));
|
||||
|
||||
g_mutex_lock (&self->mutex);
|
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|
||||
self->source = NULL;
|
||||
|
||||
for (i = 0; i < self->lazy_bindings->len; i++)
|
||||
{
|
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LazyBinding *lazy_binding = g_ptr_array_index (self->lazy_bindings, i);
|
||||
|
||||
lazy_binding->binding = NULL;
|
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}
|
||||
|
||||
g_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group__target_weak_notify (gpointer data,
|
||||
GObject *where_object_was)
|
||||
{
|
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GBindingGroup *self = data;
|
||||
LazyBinding *to_free = NULL;
|
||||
guint i;
|
||||
|
||||
g_assert (G_IS_BINDING_GROUP (self));
|
||||
|
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g_mutex_lock (&self->mutex);
|
||||
|
||||
for (i = 0; i < self->lazy_bindings->len; i++)
|
||||
{
|
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LazyBinding *lazy_binding = g_ptr_array_index (self->lazy_bindings, i);
|
||||
|
||||
if (lazy_binding->target == where_object_was)
|
||||
{
|
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lazy_binding->target = NULL;
|
||||
lazy_binding->binding = NULL;
|
||||
|
||||
to_free = g_ptr_array_steal_index_fast (self->lazy_bindings, i);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
g_mutex_unlock (&self->mutex);
|
||||
|
||||
if (to_free != NULL)
|
||||
lazy_binding_free (to_free);
|
||||
}
|
||||
|
||||
static void
|
||||
lazy_binding_free (gpointer data)
|
||||
{
|
||||
LazyBinding *lazy_binding = data;
|
||||
|
||||
if (lazy_binding->target != NULL)
|
||||
{
|
||||
g_object_weak_unref (lazy_binding->target,
|
||||
g_binding_group__target_weak_notify,
|
||||
lazy_binding->group);
|
||||
lazy_binding->target = NULL;
|
||||
}
|
||||
|
||||
g_binding_group_disconnect (lazy_binding);
|
||||
|
||||
lazy_binding->group = NULL;
|
||||
lazy_binding->source_property = NULL;
|
||||
lazy_binding->target_property = NULL;
|
||||
|
||||
if (lazy_binding->user_data_destroy)
|
||||
lazy_binding->user_data_destroy (lazy_binding->user_data);
|
||||
|
||||
if (lazy_binding->using_closures)
|
||||
{
|
||||
g_clear_pointer (&lazy_binding->transform_to, g_closure_unref);
|
||||
g_clear_pointer (&lazy_binding->transform_from, g_closure_unref);
|
||||
}
|
||||
|
||||
g_slice_free (LazyBinding, lazy_binding);
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_dispose (GObject *object)
|
||||
{
|
||||
GBindingGroup *self = (GBindingGroup *)object;
|
||||
LazyBinding **lazy_bindings = NULL;
|
||||
gsize len = 0;
|
||||
gsize i;
|
||||
|
||||
g_assert (G_IS_BINDING_GROUP (self));
|
||||
|
||||
g_mutex_lock (&self->mutex);
|
||||
|
||||
if (self->source != NULL)
|
||||
{
|
||||
g_object_weak_unref (self->source,
|
||||
g_binding_group__source_weak_notify,
|
||||
self);
|
||||
self->source = NULL;
|
||||
}
|
||||
|
||||
if (self->lazy_bindings->len > 0)
|
||||
lazy_bindings = (LazyBinding **)g_ptr_array_steal (self->lazy_bindings, &len);
|
||||
|
||||
g_mutex_unlock (&self->mutex);
|
||||
|
||||
/* Free bindings without holding self->mutex to avoid re-entrancy
|
||||
* from collateral damage through release of binding closure data,
|
||||
* GDataList, etc.
|
||||
*/
|
||||
for (i = 0; i < len; i++)
|
||||
lazy_binding_free (lazy_bindings[i]);
|
||||
g_free (lazy_bindings);
|
||||
|
||||
G_OBJECT_CLASS (g_binding_group_parent_class)->dispose (object);
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_finalize (GObject *object)
|
||||
{
|
||||
GBindingGroup *self = (GBindingGroup *)object;
|
||||
|
||||
g_assert (self->lazy_bindings != NULL);
|
||||
g_assert (self->lazy_bindings->len == 0);
|
||||
|
||||
g_clear_pointer (&self->lazy_bindings, g_ptr_array_unref);
|
||||
g_mutex_clear (&self->mutex);
|
||||
|
||||
G_OBJECT_CLASS (g_binding_group_parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_get_property (GObject *object,
|
||||
guint prop_id,
|
||||
GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
GBindingGroup *self = G_BINDING_GROUP (object);
|
||||
|
||||
switch ((GBindingGroupProperty) prop_id)
|
||||
{
|
||||
case PROP_SOURCE:
|
||||
g_value_take_object (value, g_binding_group_dup_source (self));
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_set_property (GObject *object,
|
||||
guint prop_id,
|
||||
const GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
GBindingGroup *self = G_BINDING_GROUP (object);
|
||||
|
||||
switch ((GBindingGroupProperty) prop_id)
|
||||
{
|
||||
case PROP_SOURCE:
|
||||
g_binding_group_set_source (self, g_value_get_object (value));
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_class_init (GBindingGroupClass *klass)
|
||||
{
|
||||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||||
|
||||
object_class->dispose = g_binding_group_dispose;
|
||||
object_class->finalize = g_binding_group_finalize;
|
||||
object_class->get_property = g_binding_group_get_property;
|
||||
object_class->set_property = g_binding_group_set_property;
|
||||
|
||||
/**
|
||||
* GBindingGroup:source: (nullable)
|
||||
*
|
||||
* The source object used for binding properties.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
properties[PROP_SOURCE] =
|
||||
g_param_spec_object ("source",
|
||||
"Source",
|
||||
"The source GObject used for binding properties.",
|
||||
G_TYPE_OBJECT,
|
||||
(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
g_object_class_install_properties (object_class, N_PROPS, properties);
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_init (GBindingGroup *self)
|
||||
{
|
||||
g_mutex_init (&self->mutex);
|
||||
self->lazy_bindings = g_ptr_array_new_with_free_func (lazy_binding_free);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_binding_group_new:
|
||||
*
|
||||
* Creates a new #GBindingGroup.
|
||||
*
|
||||
* Returns: (transfer full): a new #GBindingGroup
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
GBindingGroup *
|
||||
g_binding_group_new (void)
|
||||
{
|
||||
return g_object_new (G_TYPE_BINDING_GROUP, NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_binding_group_dup_source:
|
||||
* @self: the #GBindingGroup
|
||||
*
|
||||
* Gets the source object used for binding properties.
|
||||
*
|
||||
* Returns: (transfer none) (nullable) (type GObject): a #GObject or %NULL.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
gpointer
|
||||
g_binding_group_dup_source (GBindingGroup *self)
|
||||
{
|
||||
GObject *source;
|
||||
|
||||
g_return_val_if_fail (G_IS_BINDING_GROUP (self), NULL);
|
||||
|
||||
g_mutex_lock (&self->mutex);
|
||||
source = self->source ? g_object_ref (self->source) : NULL;
|
||||
g_mutex_unlock (&self->mutex);
|
||||
|
||||
return source;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
g_binding_group_check_source (GBindingGroup *self,
|
||||
gpointer source)
|
||||
{
|
||||
guint i;
|
||||
|
||||
g_assert (G_IS_BINDING_GROUP (self));
|
||||
g_assert (!source || G_IS_OBJECT (source));
|
||||
|
||||
for (i = 0; i < self->lazy_bindings->len; i++)
|
||||
{
|
||||
LazyBinding *lazy_binding = g_ptr_array_index (self->lazy_bindings, i);
|
||||
|
||||
g_return_val_if_fail (g_object_class_find_property (G_OBJECT_GET_CLASS (source),
|
||||
lazy_binding->source_property) != NULL,
|
||||
FALSE);
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_binding_group_set_source:
|
||||
* @self: the #GBindingGroup
|
||||
* @source: (type GObject) (nullable) (transfer none): the source #GObject,
|
||||
* or %NULL to clear it
|
||||
*
|
||||
* Sets @source as the source object used for creating property
|
||||
* bindings. If there is already a source object all bindings from it
|
||||
* will be removed.
|
||||
*
|
||||
* Note that all properties that have been bound must exist on @source.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_binding_group_set_source (GBindingGroup *self,
|
||||
gpointer source)
|
||||
{
|
||||
gboolean notify = FALSE;
|
||||
|
||||
g_return_if_fail (G_IS_BINDING_GROUP (self));
|
||||
g_return_if_fail (!source || G_IS_OBJECT (source));
|
||||
g_return_if_fail (source != (gpointer) self);
|
||||
|
||||
g_mutex_lock (&self->mutex);
|
||||
|
||||
if (source == (gpointer) self->source)
|
||||
goto unlock;
|
||||
|
||||
if (self->source != NULL)
|
||||
{
|
||||
guint i;
|
||||
|
||||
g_object_weak_unref (self->source,
|
||||
g_binding_group__source_weak_notify,
|
||||
self);
|
||||
self->source = NULL;
|
||||
|
||||
for (i = 0; i < self->lazy_bindings->len; i++)
|
||||
{
|
||||
LazyBinding *lazy_binding = g_ptr_array_index (self->lazy_bindings, i);
|
||||
|
||||
g_binding_group_disconnect (lazy_binding);
|
||||
}
|
||||
}
|
||||
|
||||
if (source != NULL && g_binding_group_check_source (self, source))
|
||||
{
|
||||
guint i;
|
||||
|
||||
self->source = source;
|
||||
g_object_weak_ref (self->source,
|
||||
g_binding_group__source_weak_notify,
|
||||
self);
|
||||
|
||||
for (i = 0; i < self->lazy_bindings->len; i++)
|
||||
{
|
||||
LazyBinding *lazy_binding;
|
||||
|
||||
lazy_binding = g_ptr_array_index (self->lazy_bindings, i);
|
||||
g_binding_group_connect (self, lazy_binding);
|
||||
}
|
||||
}
|
||||
|
||||
notify = TRUE;
|
||||
|
||||
unlock:
|
||||
g_mutex_unlock (&self->mutex);
|
||||
|
||||
if (notify)
|
||||
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SOURCE]);
|
||||
}
|
||||
|
||||
static void
|
||||
g_binding_group_bind_helper (GBindingGroup *self,
|
||||
const gchar *source_property,
|
||||
gpointer target,
|
||||
const gchar *target_property,
|
||||
GBindingFlags flags,
|
||||
gpointer transform_to,
|
||||
gpointer transform_from,
|
||||
gpointer user_data,
|
||||
GDestroyNotify user_data_destroy,
|
||||
gboolean using_closures)
|
||||
{
|
||||
LazyBinding *lazy_binding;
|
||||
|
||||
g_return_if_fail (G_IS_BINDING_GROUP (self));
|
||||
g_return_if_fail (source_property != NULL);
|
||||
g_return_if_fail (self->source == NULL ||
|
||||
g_object_class_find_property (G_OBJECT_GET_CLASS (self->source),
|
||||
source_property) != NULL);
|
||||
g_return_if_fail (G_IS_OBJECT (target));
|
||||
g_return_if_fail (target_property != NULL);
|
||||
g_return_if_fail (g_object_class_find_property (G_OBJECT_GET_CLASS (target),
|
||||
target_property) != NULL);
|
||||
g_return_if_fail (target != (gpointer) self ||
|
||||
strcmp (source_property, target_property) != 0);
|
||||
|
||||
g_mutex_lock (&self->mutex);
|
||||
|
||||
lazy_binding = g_slice_new0 (LazyBinding);
|
||||
lazy_binding->group = self;
|
||||
lazy_binding->source_property = g_intern_string (source_property);
|
||||
lazy_binding->target_property = g_intern_string (target_property);
|
||||
lazy_binding->target = target;
|
||||
lazy_binding->binding_flags = flags | G_BINDING_SYNC_CREATE;
|
||||
lazy_binding->user_data = user_data;
|
||||
lazy_binding->user_data_destroy = user_data_destroy;
|
||||
lazy_binding->transform_to = transform_to;
|
||||
lazy_binding->transform_from = transform_from;
|
||||
|
||||
if (using_closures)
|
||||
{
|
||||
lazy_binding->using_closures = TRUE;
|
||||
|
||||
if (transform_to != NULL)
|
||||
g_closure_sink (g_closure_ref (transform_to));
|
||||
|
||||
if (transform_from != NULL)
|
||||
g_closure_sink (g_closure_ref (transform_from));
|
||||
}
|
||||
|
||||
g_object_weak_ref (target,
|
||||
g_binding_group__target_weak_notify,
|
||||
self);
|
||||
|
||||
g_ptr_array_add (self->lazy_bindings, lazy_binding);
|
||||
|
||||
if (self->source != NULL)
|
||||
g_binding_group_connect (self, lazy_binding);
|
||||
|
||||
g_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_binding_group_bind:
|
||||
* @self: the #GBindingGroup
|
||||
* @source_property: the property on the source to bind
|
||||
* @target: (type GObject) (transfer none) (not nullable): the target #GObject
|
||||
* @target_property: the property on @target to bind
|
||||
* @flags: the flags used to create the #GBinding
|
||||
*
|
||||
* Creates a binding between @source_property on the source object
|
||||
* and @target_property on @target. Whenever the @source_property
|
||||
* is changed the @target_property is updated using the same value.
|
||||
* The binding flag %G_BINDING_SYNC_CREATE is automatically specified.
|
||||
*
|
||||
* See g_object_bind_property() for more information.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_binding_group_bind (GBindingGroup *self,
|
||||
const gchar *source_property,
|
||||
gpointer target,
|
||||
const gchar *target_property,
|
||||
GBindingFlags flags)
|
||||
{
|
||||
g_binding_group_bind_full (self, source_property,
|
||||
target, target_property,
|
||||
flags,
|
||||
NULL, NULL,
|
||||
NULL, NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_binding_group_bind_full:
|
||||
* @self: the #GBindingGroup
|
||||
* @source_property: the property on the source to bind
|
||||
* @target: (type GObject) (transfer none) (not nullable): the target #GObject
|
||||
* @target_property: the property on @target to bind
|
||||
* @flags: the flags used to create the #GBinding
|
||||
* @transform_to: (scope notified) (nullable): the transformation function
|
||||
* from the source object to the @target, or %NULL to use the default
|
||||
* @transform_from: (scope notified) (nullable): the transformation function
|
||||
* from the @target to the source object, or %NULL to use the default
|
||||
* @user_data: custom data to be passed to the transformation
|
||||
* functions, or %NULL
|
||||
* @user_data_destroy: function to be called when disposing the binding,
|
||||
* to free the resources used by the transformation functions
|
||||
*
|
||||
* Creates a binding between @source_property on the source object and
|
||||
* @target_property on @target, allowing you to set the transformation
|
||||
* functions to be used by the binding. The binding flag
|
||||
* %G_BINDING_SYNC_CREATE is automatically specified.
|
||||
*
|
||||
* See g_object_bind_property_full() for more information.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_binding_group_bind_full (GBindingGroup *self,
|
||||
const gchar *source_property,
|
||||
gpointer target,
|
||||
const gchar *target_property,
|
||||
GBindingFlags flags,
|
||||
GBindingTransformFunc transform_to,
|
||||
GBindingTransformFunc transform_from,
|
||||
gpointer user_data,
|
||||
GDestroyNotify user_data_destroy)
|
||||
{
|
||||
g_binding_group_bind_helper (self, source_property,
|
||||
target, target_property,
|
||||
flags,
|
||||
transform_to, transform_from,
|
||||
user_data, user_data_destroy,
|
||||
FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_binding_group_bind_with_closures: (rename-to g_binding_group_bind_full)
|
||||
* @self: the #GBindingGroup
|
||||
* @source_property: the property on the source to bind
|
||||
* @target: (type GObject) (transfer none) (not nullable): the target #GObject
|
||||
* @target_property: the property on @target to bind
|
||||
* @flags: the flags used to create the #GBinding
|
||||
* @transform_to: (nullable) (transfer none): a #GClosure wrapping the
|
||||
* transformation function from the source object to the @target,
|
||||
* or %NULL to use the default
|
||||
* @transform_from: (nullable) (transfer none): a #GClosure wrapping the
|
||||
* transformation function from the @target to the source object,
|
||||
* or %NULL to use the default
|
||||
*
|
||||
* Creates a binding between @source_property on the source object and
|
||||
* @target_property on @target, allowing you to set the transformation
|
||||
* functions to be used by the binding. The binding flag
|
||||
* %G_BINDING_SYNC_CREATE is automatically specified.
|
||||
*
|
||||
* This function is the language bindings friendly version of
|
||||
* g_binding_group_bind_property_full(), using #GClosures
|
||||
* instead of function pointers.
|
||||
*
|
||||
* See g_object_bind_property_with_closures() for more information.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_binding_group_bind_with_closures (GBindingGroup *self,
|
||||
const gchar *source_property,
|
||||
gpointer target,
|
||||
const gchar *target_property,
|
||||
GBindingFlags flags,
|
||||
GClosure *transform_to,
|
||||
GClosure *transform_from)
|
||||
{
|
||||
g_binding_group_bind_helper (self, source_property,
|
||||
target, target_property,
|
||||
flags,
|
||||
transform_to, transform_from,
|
||||
NULL, NULL,
|
||||
TRUE);
|
||||
}
|
||||
85
gobject/gbindinggroup.h
Normal file
85
gobject/gbindinggroup.h
Normal file
@ -0,0 +1,85 @@
|
||||
/* GObject - GLib Type, Object, Parameter and Signal Library
|
||||
*
|
||||
* Copyright (C) 2015-2022 Christian Hergert <christian@hergert.me>
|
||||
* Copyright (C) 2015 Garrett Regier <garrettregier@gmail.com>
|
||||
*
|
||||
* 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/>.
|
||||
*
|
||||
* SPDX-License-Identifier: LGPL-2.1-or-later
|
||||
*/
|
||||
|
||||
#ifndef __G_BINDING_GROUP_H__
|
||||
#define __G_BINDING_GROUP_H__
|
||||
|
||||
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
|
||||
#error "Only <glib-object.h> can be included directly."
|
||||
#endif
|
||||
|
||||
#include <glib.h>
|
||||
#include <gobject/gobject.h>
|
||||
#include <gobject/gbinding.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define G_BINDING_GROUP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_BINDING_GROUP, GBindingGroup))
|
||||
#define G_IS_BINDING_GROUP(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_BINDING_GROUP))
|
||||
#define G_TYPE_BINDING_GROUP (g_binding_group_get_type())
|
||||
|
||||
/**
|
||||
* GBindingGroup:
|
||||
*
|
||||
* GBindingGroup is an opaque structure whose members
|
||||
* cannot be accessed directly.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
typedef struct _GBindingGroup GBindingGroup;
|
||||
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
GType g_binding_group_get_type (void) G_GNUC_CONST;
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
GBindingGroup *g_binding_group_new (void);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
gpointer g_binding_group_dup_source (GBindingGroup *self);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_binding_group_set_source (GBindingGroup *self,
|
||||
gpointer source);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_binding_group_bind (GBindingGroup *self,
|
||||
const gchar *source_property,
|
||||
gpointer target,
|
||||
const gchar *target_property,
|
||||
GBindingFlags flags);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_binding_group_bind_full (GBindingGroup *self,
|
||||
const gchar *source_property,
|
||||
gpointer target,
|
||||
const gchar *target_property,
|
||||
GBindingFlags flags,
|
||||
GBindingTransformFunc transform_to,
|
||||
GBindingTransformFunc transform_from,
|
||||
gpointer user_data,
|
||||
GDestroyNotify user_data_destroy);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_binding_group_bind_with_closures (GBindingGroup *self,
|
||||
const gchar *source_property,
|
||||
gpointer target,
|
||||
const gchar *target_property,
|
||||
GBindingFlags flags,
|
||||
GClosure *transform_to,
|
||||
GClosure *transform_from);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __G_BINDING_GROUP_H__ */
|
||||
912
gobject/gsignalgroup.c
Normal file
912
gobject/gsignalgroup.c
Normal file
@ -0,0 +1,912 @@
|
||||
/* GObject - GLib Type, Object, Parameter and Signal Library
|
||||
*
|
||||
* Copyright (C) 2015-2022 Christian Hergert <christian@hergert.me>
|
||||
* Copyright (C) 2015 Garrett Regier <garrettregier@gmail.com>
|
||||
*
|
||||
* 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/>.
|
||||
*
|
||||
* SPDX-License-Identifier: LGPL-2.1-or-later
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
#include "glib.h"
|
||||
#include "glibintl.h"
|
||||
|
||||
#include "gparamspecs.h"
|
||||
#include "gsignalgroup.h"
|
||||
#include "gvaluetypes.h"
|
||||
|
||||
/**
|
||||
* SECTION:gsignalgroup
|
||||
* @Title: GSignalGroup
|
||||
* @Short_description: Manage a collection of signals on a GObject
|
||||
*
|
||||
* #GSignalGroup manages to simplify the process of connecting
|
||||
* many signals to a #GObject as a group. As such there is no API
|
||||
* to disconnect a signal from the group.
|
||||
*
|
||||
* In particular, this allows you to:
|
||||
*
|
||||
* - Change the target instance, which automatically causes disconnection
|
||||
* of the signals from the old instance and connecting to the new instance.
|
||||
* - Block and unblock signals as a group
|
||||
* - Ensuring that blocked state transfers across target instances.
|
||||
*
|
||||
* One place you might want to use such a structure is with #GtkTextView and
|
||||
* #GtkTextBuffer. Often times, you'll need to connect to many signals on
|
||||
* #GtkTextBuffer from a #GtkTextView subclass. This allows you to create a
|
||||
* signal group during instance construction, simply bind the
|
||||
* #GtkTextView:buffer property to #GSignalGroup:target and connect
|
||||
* all the signals you need. When the #GtkTextView:buffer property changes
|
||||
* all of the signals will be transitioned correctly.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
|
||||
struct _GSignalGroup
|
||||
{
|
||||
GObject parent_instance;
|
||||
|
||||
GWeakRef target_ref;
|
||||
GRecMutex mutex;
|
||||
GPtrArray *handlers;
|
||||
GType target_type;
|
||||
gssize block_count;
|
||||
|
||||
guint has_bound_at_least_once : 1;
|
||||
};
|
||||
|
||||
typedef struct _GSignalGroupClass
|
||||
{
|
||||
GObjectClass parent_class;
|
||||
|
||||
void (*bind) (GSignalGroup *self,
|
||||
GObject *target);
|
||||
} GSignalGroupClass;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
GSignalGroup *group;
|
||||
gulong handler_id;
|
||||
GClosure *closure;
|
||||
guint signal_id;
|
||||
GQuark signal_detail;
|
||||
guint connect_after : 1;
|
||||
} SignalHandler;
|
||||
|
||||
G_DEFINE_TYPE (GSignalGroup, g_signal_group, G_TYPE_OBJECT)
|
||||
|
||||
typedef enum
|
||||
{
|
||||
PROP_TARGET = 1,
|
||||
PROP_TARGET_TYPE,
|
||||
LAST_PROP
|
||||
} GSignalGroupProperty;
|
||||
|
||||
enum
|
||||
{
|
||||
BIND,
|
||||
UNBIND,
|
||||
LAST_SIGNAL
|
||||
};
|
||||
|
||||
static GParamSpec *properties[LAST_PROP];
|
||||
static guint signals[LAST_SIGNAL];
|
||||
|
||||
static void
|
||||
g_signal_group_set_target_type (GSignalGroup *self,
|
||||
GType target_type)
|
||||
{
|
||||
g_assert (G_IS_SIGNAL_GROUP (self));
|
||||
g_assert (g_type_is_a (target_type, G_TYPE_OBJECT));
|
||||
|
||||
self->target_type = target_type;
|
||||
|
||||
/* The class must be created at least once for the signals
|
||||
* to be registered, otherwise g_signal_parse_name() will fail
|
||||
*/
|
||||
if (G_TYPE_IS_INTERFACE (target_type))
|
||||
{
|
||||
if (g_type_default_interface_peek (target_type) == NULL)
|
||||
g_type_default_interface_unref (g_type_default_interface_ref (target_type));
|
||||
}
|
||||
else
|
||||
{
|
||||
if (g_type_class_peek (target_type) == NULL)
|
||||
g_type_class_unref (g_type_class_ref (target_type));
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_gc_handlers (GSignalGroup *self)
|
||||
{
|
||||
guint i;
|
||||
|
||||
g_assert (G_IS_SIGNAL_GROUP (self));
|
||||
|
||||
/*
|
||||
* Remove any handlers for which the closures have become invalid. We do
|
||||
* this cleanup lazily to avoid situations where we could have disposal
|
||||
* active on both the signal group and the peer object.
|
||||
*/
|
||||
|
||||
for (i = self->handlers->len; i > 0; i--)
|
||||
{
|
||||
const SignalHandler *handler = g_ptr_array_index (self->handlers, i - 1);
|
||||
|
||||
g_assert (handler != NULL);
|
||||
g_assert (handler->closure != NULL);
|
||||
|
||||
if (handler->closure->is_invalid)
|
||||
g_ptr_array_remove_index (self->handlers, i - 1);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group__target_weak_notify (gpointer data,
|
||||
GObject *where_object_was)
|
||||
{
|
||||
GSignalGroup *self = data;
|
||||
guint i;
|
||||
|
||||
g_assert (G_IS_SIGNAL_GROUP (self));
|
||||
g_assert (where_object_was != NULL);
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
|
||||
g_weak_ref_set (&self->target_ref, NULL);
|
||||
|
||||
for (i = 0; i < self->handlers->len; i++)
|
||||
{
|
||||
SignalHandler *handler = g_ptr_array_index (self->handlers, i);
|
||||
|
||||
handler->handler_id = 0;
|
||||
}
|
||||
|
||||
g_signal_emit (self, signals[UNBIND], 0);
|
||||
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TARGET]);
|
||||
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_bind_handler (GSignalGroup *self,
|
||||
SignalHandler *handler,
|
||||
GObject *target)
|
||||
{
|
||||
gssize i;
|
||||
|
||||
g_assert (self != NULL);
|
||||
g_assert (G_IS_OBJECT (target));
|
||||
g_assert (handler != NULL);
|
||||
g_assert (handler->signal_id != 0);
|
||||
g_assert (handler->closure != NULL);
|
||||
g_assert (handler->closure->is_invalid == 0);
|
||||
g_assert (handler->handler_id == 0);
|
||||
|
||||
handler->handler_id = g_signal_connect_closure_by_id (target,
|
||||
handler->signal_id,
|
||||
handler->signal_detail,
|
||||
handler->closure,
|
||||
handler->connect_after);
|
||||
|
||||
g_assert (handler->handler_id != 0);
|
||||
|
||||
for (i = 0; i < self->block_count; i++)
|
||||
g_signal_handler_block (target, handler->handler_id);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_bind (GSignalGroup *self,
|
||||
GObject *target)
|
||||
{
|
||||
GObject *hold;
|
||||
guint i;
|
||||
|
||||
g_assert (G_IS_SIGNAL_GROUP (self));
|
||||
g_assert (!target || G_IS_OBJECT (target));
|
||||
|
||||
if (target == NULL)
|
||||
return;
|
||||
|
||||
self->has_bound_at_least_once = TRUE;
|
||||
|
||||
hold = g_object_ref (target);
|
||||
|
||||
g_weak_ref_set (&self->target_ref, hold);
|
||||
g_object_weak_ref (hold, g_signal_group__target_weak_notify, self);
|
||||
|
||||
g_signal_group_gc_handlers (self);
|
||||
|
||||
for (i = 0; i < self->handlers->len; i++)
|
||||
{
|
||||
SignalHandler *handler = g_ptr_array_index (self->handlers, i);
|
||||
|
||||
g_signal_group_bind_handler (self, handler, hold);
|
||||
}
|
||||
|
||||
g_signal_emit (self, signals [BIND], 0, hold);
|
||||
|
||||
g_object_unref (hold);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_unbind (GSignalGroup *self)
|
||||
{
|
||||
GObject *target;
|
||||
guint i;
|
||||
|
||||
g_return_if_fail (G_IS_SIGNAL_GROUP (self));
|
||||
|
||||
target = g_weak_ref_get (&self->target_ref);
|
||||
|
||||
/*
|
||||
* Target may be NULL by this point, as we got notified of its destruction.
|
||||
* However, if we're early enough, we may get a full reference back and can
|
||||
* cleanly disconnect our connections.
|
||||
*/
|
||||
|
||||
if (target != NULL)
|
||||
{
|
||||
g_weak_ref_set (&self->target_ref, NULL);
|
||||
|
||||
/*
|
||||
* Let go of our weak reference now that we have a full reference
|
||||
* for the life of this function.
|
||||
*/
|
||||
g_object_weak_unref (target,
|
||||
g_signal_group__target_weak_notify,
|
||||
self);
|
||||
}
|
||||
|
||||
g_signal_group_gc_handlers (self);
|
||||
|
||||
for (i = 0; i < self->handlers->len; i++)
|
||||
{
|
||||
SignalHandler *handler;
|
||||
gulong handler_id;
|
||||
|
||||
handler = g_ptr_array_index (self->handlers, i);
|
||||
|
||||
g_assert (handler != NULL);
|
||||
g_assert (handler->signal_id != 0);
|
||||
g_assert (handler->closure != NULL);
|
||||
|
||||
handler_id = handler->handler_id;
|
||||
handler->handler_id = 0;
|
||||
|
||||
/*
|
||||
* If @target is NULL, we lost a race to cleanup the weak
|
||||
* instance and the signal connections have already been
|
||||
* finalized and therefore nothing to do.
|
||||
*/
|
||||
|
||||
if (target != NULL && handler_id != 0)
|
||||
g_signal_handler_disconnect (target, handler_id);
|
||||
}
|
||||
|
||||
g_signal_emit (self, signals [UNBIND], 0);
|
||||
|
||||
g_clear_object (&target);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
g_signal_group_check_target_type (GSignalGroup *self,
|
||||
gpointer target)
|
||||
{
|
||||
if ((target != NULL) &&
|
||||
!g_type_is_a (G_OBJECT_TYPE (target), self->target_type))
|
||||
{
|
||||
g_critical ("Failed to set GSignalGroup of target type %s "
|
||||
"using target %p of type %s",
|
||||
g_type_name (self->target_type),
|
||||
target, G_OBJECT_TYPE_NAME (target));
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_block:
|
||||
* @self: the #GSignalGroup
|
||||
*
|
||||
* Blocks all signal handlers managed by @self so they will not
|
||||
* be called during any signal emissions. Must be unblocked exactly
|
||||
* the same number of times it has been blocked to become active again.
|
||||
*
|
||||
* This blocked state will be kept across changes of the target instance.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_block (GSignalGroup *self)
|
||||
{
|
||||
GObject *target;
|
||||
guint i;
|
||||
|
||||
g_return_if_fail (G_IS_SIGNAL_GROUP (self));
|
||||
g_return_if_fail (self->block_count >= 0);
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
|
||||
self->block_count++;
|
||||
|
||||
target = g_weak_ref_get (&self->target_ref);
|
||||
|
||||
if (target == NULL)
|
||||
goto unlock;
|
||||
|
||||
for (i = 0; i < self->handlers->len; i++)
|
||||
{
|
||||
const SignalHandler *handler = g_ptr_array_index (self->handlers, i);
|
||||
|
||||
g_assert (handler != NULL);
|
||||
g_assert (handler->signal_id != 0);
|
||||
g_assert (handler->closure != NULL);
|
||||
g_assert (handler->handler_id != 0);
|
||||
|
||||
g_signal_handler_block (target, handler->handler_id);
|
||||
}
|
||||
|
||||
g_object_unref (target);
|
||||
|
||||
unlock:
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_unblock:
|
||||
* @self: the #GSignalGroup
|
||||
*
|
||||
* Unblocks all signal handlers managed by @self so they will be
|
||||
* called again during any signal emissions unless it is blocked
|
||||
* again. Must be unblocked exactly the same number of times it
|
||||
* has been blocked to become active again.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_unblock (GSignalGroup *self)
|
||||
{
|
||||
GObject *target;
|
||||
guint i;
|
||||
|
||||
g_return_if_fail (G_IS_SIGNAL_GROUP (self));
|
||||
g_return_if_fail (self->block_count > 0);
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
|
||||
self->block_count--;
|
||||
|
||||
target = g_weak_ref_get (&self->target_ref);
|
||||
if (target == NULL)
|
||||
goto unlock;
|
||||
|
||||
for (i = 0; i < self->handlers->len; i++)
|
||||
{
|
||||
const SignalHandler *handler = g_ptr_array_index (self->handlers, i);
|
||||
|
||||
g_assert (handler != NULL);
|
||||
g_assert (handler->signal_id != 0);
|
||||
g_assert (handler->closure != NULL);
|
||||
g_assert (handler->handler_id != 0);
|
||||
|
||||
g_signal_handler_unblock (target, handler->handler_id);
|
||||
}
|
||||
|
||||
g_object_unref (target);
|
||||
|
||||
unlock:
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_dup_target:
|
||||
* @self: the #GSignalGroup
|
||||
*
|
||||
* Gets the target instance used when connecting signals.
|
||||
*
|
||||
* Returns: (nullable) (transfer full) (type GObject): The target instance
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
gpointer
|
||||
g_signal_group_dup_target (GSignalGroup *self)
|
||||
{
|
||||
GObject *target;
|
||||
|
||||
g_return_val_if_fail (G_IS_SIGNAL_GROUP (self), NULL);
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
target = g_weak_ref_get (&self->target_ref);
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
|
||||
return target;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_set_target:
|
||||
* @self: the #GSignalGroup.
|
||||
* @target: (nullable) (type GObject) (transfer none): The target instance used
|
||||
* when connecting signals.
|
||||
*
|
||||
* Sets the target instance used when connecting signals. Any signal
|
||||
* that has been registered with g_signal_group_connect_object() or
|
||||
* similar functions will be connected to this object.
|
||||
*
|
||||
* If the target instance was previously set, signals will be
|
||||
* disconnected from that object prior to connecting to @target.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_set_target (GSignalGroup *self,
|
||||
gpointer target)
|
||||
{
|
||||
GObject *object;
|
||||
|
||||
g_return_if_fail (G_IS_SIGNAL_GROUP (self));
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
|
||||
object = g_weak_ref_get (&self->target_ref);
|
||||
|
||||
if (object == (GObject *)target)
|
||||
goto cleanup;
|
||||
|
||||
if (!g_signal_group_check_target_type (self, target))
|
||||
goto cleanup;
|
||||
|
||||
/* Only emit unbind if we've ever called bind */
|
||||
if (self->has_bound_at_least_once)
|
||||
g_signal_group_unbind (self);
|
||||
|
||||
g_signal_group_bind (self, target);
|
||||
|
||||
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TARGET]);
|
||||
|
||||
cleanup:
|
||||
g_clear_object (&object);
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
static void
|
||||
signal_handler_free (gpointer data)
|
||||
{
|
||||
SignalHandler *handler = data;
|
||||
|
||||
if (handler->closure != NULL)
|
||||
g_closure_invalidate (handler->closure);
|
||||
|
||||
handler->handler_id = 0;
|
||||
handler->signal_id = 0;
|
||||
handler->signal_detail = 0;
|
||||
g_clear_pointer (&handler->closure, g_closure_unref);
|
||||
g_slice_free (SignalHandler, handler);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_constructed (GObject *object)
|
||||
{
|
||||
GSignalGroup *self = (GSignalGroup *)object;
|
||||
GObject *target;
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
|
||||
target = g_weak_ref_get (&self->target_ref);
|
||||
if (!g_signal_group_check_target_type (self, target))
|
||||
g_signal_group_set_target (self, NULL);
|
||||
|
||||
G_OBJECT_CLASS (g_signal_group_parent_class)->constructed (object);
|
||||
|
||||
g_clear_object (&target);
|
||||
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_dispose (GObject *object)
|
||||
{
|
||||
GSignalGroup *self = (GSignalGroup *)object;
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
|
||||
g_signal_group_gc_handlers (self);
|
||||
|
||||
if (self->has_bound_at_least_once)
|
||||
g_signal_group_unbind (self);
|
||||
|
||||
g_clear_pointer (&self->handlers, g_ptr_array_unref);
|
||||
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
|
||||
G_OBJECT_CLASS (g_signal_group_parent_class)->dispose (object);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_finalize (GObject *object)
|
||||
{
|
||||
GSignalGroup *self = (GSignalGroup *)object;
|
||||
|
||||
g_weak_ref_clear (&self->target_ref);
|
||||
g_rec_mutex_clear (&self->mutex);
|
||||
|
||||
G_OBJECT_CLASS (g_signal_group_parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_get_property (GObject *object,
|
||||
guint prop_id,
|
||||
GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
GSignalGroup *self = G_SIGNAL_GROUP (object);
|
||||
|
||||
switch ((GSignalGroupProperty) prop_id)
|
||||
{
|
||||
case PROP_TARGET:
|
||||
g_value_take_object (value, g_signal_group_dup_target (self));
|
||||
break;
|
||||
|
||||
case PROP_TARGET_TYPE:
|
||||
g_value_set_gtype (value, self->target_type);
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_set_property (GObject *object,
|
||||
guint prop_id,
|
||||
const GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
GSignalGroup *self = G_SIGNAL_GROUP (object);
|
||||
|
||||
switch ((GSignalGroupProperty) prop_id)
|
||||
{
|
||||
case PROP_TARGET:
|
||||
g_signal_group_set_target (self, g_value_get_object (value));
|
||||
break;
|
||||
|
||||
case PROP_TARGET_TYPE:
|
||||
g_signal_group_set_target_type (self, g_value_get_gtype (value));
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_class_init (GSignalGroupClass *klass)
|
||||
{
|
||||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||||
|
||||
object_class->constructed = g_signal_group_constructed;
|
||||
object_class->dispose = g_signal_group_dispose;
|
||||
object_class->finalize = g_signal_group_finalize;
|
||||
object_class->get_property = g_signal_group_get_property;
|
||||
object_class->set_property = g_signal_group_set_property;
|
||||
|
||||
/**
|
||||
* GSignalGroup:target
|
||||
*
|
||||
* The target instance used when connecting signals.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
properties[PROP_TARGET] =
|
||||
g_param_spec_object ("target",
|
||||
"Target",
|
||||
"The target instance used when connecting signals.",
|
||||
G_TYPE_OBJECT,
|
||||
(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
/**
|
||||
* GSignalGroup:target-type
|
||||
*
|
||||
* The #GType of the target property.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
properties[PROP_TARGET_TYPE] =
|
||||
g_param_spec_gtype ("target-type",
|
||||
"Target Type",
|
||||
"The GType of the target property.",
|
||||
G_TYPE_OBJECT,
|
||||
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
g_object_class_install_properties (object_class, LAST_PROP, properties);
|
||||
|
||||
/**
|
||||
* GSignalGroup::bind:
|
||||
* @self: the #GSignalGroup
|
||||
* @instance: a #GObject containing the new value for #GSignalGroup:target
|
||||
*
|
||||
* This signal is emitted when #GSignalGroup:target is set to a new value
|
||||
* other than %NULL. It is similar to #GObject::notify on `target` except it
|
||||
* will not emit when #GSignalGroup:target is %NULL and also allows for
|
||||
* receiving the #GObject without a data-race.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
signals[BIND] =
|
||||
g_signal_new ("bind",
|
||||
G_TYPE_FROM_CLASS (klass),
|
||||
G_SIGNAL_RUN_LAST,
|
||||
0,
|
||||
NULL, NULL, NULL,
|
||||
G_TYPE_NONE,
|
||||
1,
|
||||
G_TYPE_OBJECT);
|
||||
|
||||
/**
|
||||
* GSignalGroup::unbind:
|
||||
* @self: a #GSignalGroup
|
||||
*
|
||||
* This signal is emitted when the target instance of @self is set to a
|
||||
* new #GObject.
|
||||
*
|
||||
* This signal will only be emitted if the previous target of @self is
|
||||
* non-%NULL.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
signals[UNBIND] =
|
||||
g_signal_new ("unbind",
|
||||
G_TYPE_FROM_CLASS (klass),
|
||||
G_SIGNAL_RUN_LAST,
|
||||
0,
|
||||
NULL, NULL, NULL,
|
||||
G_TYPE_NONE,
|
||||
0);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_init (GSignalGroup *self)
|
||||
{
|
||||
g_rec_mutex_init (&self->mutex);
|
||||
self->handlers = g_ptr_array_new_with_free_func (signal_handler_free);
|
||||
self->target_type = G_TYPE_OBJECT;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_new:
|
||||
* @target_type: the #GType of the target instance.
|
||||
*
|
||||
* Creates a new #GSignalGroup for target instances of @target_type.
|
||||
*
|
||||
* Returns: (transfer full): a new #GSignalGroup
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
GSignalGroup *
|
||||
g_signal_group_new (GType target_type)
|
||||
{
|
||||
g_return_val_if_fail (g_type_is_a (target_type, G_TYPE_OBJECT), NULL);
|
||||
|
||||
return g_object_new (G_TYPE_SIGNAL_GROUP,
|
||||
"target-type", target_type,
|
||||
NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
g_signal_group_connect_full (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data,
|
||||
GClosureNotify notify,
|
||||
GConnectFlags flags,
|
||||
gboolean is_object)
|
||||
{
|
||||
GObject *target;
|
||||
SignalHandler *handler;
|
||||
GClosure *closure;
|
||||
guint signal_id;
|
||||
GQuark signal_detail;
|
||||
|
||||
g_return_if_fail (G_IS_SIGNAL_GROUP (self));
|
||||
g_return_if_fail (detailed_signal != NULL);
|
||||
g_return_if_fail (g_signal_parse_name (detailed_signal, self->target_type,
|
||||
&signal_id, &signal_detail, TRUE) != 0);
|
||||
g_return_if_fail (c_handler != NULL);
|
||||
g_return_if_fail (!is_object || G_IS_OBJECT (data));
|
||||
|
||||
g_rec_mutex_lock (&self->mutex);
|
||||
|
||||
if (self->has_bound_at_least_once)
|
||||
{
|
||||
g_critical ("Cannot add signals after setting target");
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
return;
|
||||
}
|
||||
|
||||
if ((flags & G_CONNECT_SWAPPED) != 0)
|
||||
closure = g_cclosure_new_swap (c_handler, data, notify);
|
||||
else
|
||||
closure = g_cclosure_new (c_handler, data, notify);
|
||||
|
||||
handler = g_slice_new0 (SignalHandler);
|
||||
handler->group = self;
|
||||
handler->signal_id = signal_id;
|
||||
handler->signal_detail = signal_detail;
|
||||
handler->closure = g_closure_ref (closure);
|
||||
handler->connect_after = ((flags & G_CONNECT_AFTER) != 0);
|
||||
|
||||
g_closure_sink (closure);
|
||||
|
||||
if (is_object)
|
||||
{
|
||||
/* Set closure->is_invalid when data is disposed. We only track this to avoid
|
||||
* reconnecting in the future. However, we do a round of cleanup when ever we
|
||||
* connect a new object or the target changes to GC the old handlers.
|
||||
*/
|
||||
g_object_watch_closure (data, closure);
|
||||
}
|
||||
|
||||
g_ptr_array_add (self->handlers, handler);
|
||||
|
||||
target = g_weak_ref_get (&self->target_ref);
|
||||
|
||||
if (target != NULL)
|
||||
{
|
||||
g_signal_group_bind_handler (self, handler, target);
|
||||
g_object_unref (target);
|
||||
}
|
||||
|
||||
/* Lazily remove any old handlers on connect */
|
||||
g_signal_group_gc_handlers (self);
|
||||
|
||||
g_rec_mutex_unlock (&self->mutex);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_connect_object: (skip)
|
||||
* @self: a #GSignalGroup
|
||||
* @detailed_signal: a string of the form `signal-name` with optional `::signal-detail`
|
||||
* @c_handler: (scope notified): the #GCallback to connect
|
||||
* @object: (not nullable) (transfer none): the #GObject to pass as data to @c_handler calls
|
||||
* @flags: #GConnectFlags for the signal connection
|
||||
*
|
||||
* Connects @c_handler to the signal @detailed_signal on #GSignalGroup:target.
|
||||
*
|
||||
* Ensures that the @object stays alive during the call to @c_handler
|
||||
* by temporarily adding a reference count. When the @object is destroyed
|
||||
* the signal handler will automatically be removed.
|
||||
*
|
||||
* You cannot connect a signal handler after #GSignalGroup:target has been set.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_connect_object (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer object,
|
||||
GConnectFlags flags)
|
||||
{
|
||||
g_return_if_fail (G_IS_OBJECT (object));
|
||||
|
||||
g_signal_group_connect_full (self, detailed_signal, c_handler, object, NULL,
|
||||
flags, TRUE);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_connect_data:
|
||||
* @self: a #GSignalGroup
|
||||
* @detailed_signal: a string of the form "signal-name::detail"
|
||||
* @c_handler: (scope notified) (closure data) (destroy notify): the #GCallback to connect
|
||||
* @data: the data to pass to @c_handler calls
|
||||
* @notify: function to be called when disposing of @self
|
||||
* @flags: the flags used to create the signal connection
|
||||
*
|
||||
* Connects @c_handler to the signal @detailed_signal
|
||||
* on the target instance of @self.
|
||||
*
|
||||
* You cannot connect a signal handler after #GSignalGroup:target has been set.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_connect_data (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data,
|
||||
GClosureNotify notify,
|
||||
GConnectFlags flags)
|
||||
{
|
||||
g_signal_group_connect_full (self, detailed_signal, c_handler, data, notify,
|
||||
flags, FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_connect: (skip)
|
||||
* @self: a #GSignalGroup
|
||||
* @detailed_signal: a string of the form "signal-name::detail"
|
||||
* @c_handler: (scope notified): the #GCallback to connect
|
||||
* @data: the data to pass to @c_handler calls
|
||||
*
|
||||
* Connects @c_handler to the signal @detailed_signal
|
||||
* on the target instance of @self.
|
||||
*
|
||||
* You cannot connect a signal handler after #GSignalGroup:target has been set.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_connect (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data)
|
||||
{
|
||||
g_signal_group_connect_full (self, detailed_signal, c_handler, data, NULL,
|
||||
0, FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_connect_after: (skip)
|
||||
* @self: a #GSignalGroup
|
||||
* @detailed_signal: a string of the form "signal-name::detail"
|
||||
* @c_handler: (scope notified): the #GCallback to connect
|
||||
* @data: the data to pass to @c_handler calls
|
||||
*
|
||||
* Connects @c_handler to the signal @detailed_signal
|
||||
* on the target instance of @self.
|
||||
*
|
||||
* The @c_handler will be called after the default handler of the signal.
|
||||
*
|
||||
* You cannot connect a signal handler after #GSignalGroup:target has been set.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_connect_after (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data)
|
||||
{
|
||||
g_signal_group_connect_full (self, detailed_signal, c_handler,
|
||||
data, NULL, G_CONNECT_AFTER, FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_signal_group_connect_swapped:
|
||||
* @self: a #GSignalGroup
|
||||
* @detailed_signal: a string of the form "signal-name::detail"
|
||||
* @c_handler: (scope async): the #GCallback to connect
|
||||
* @data: the data to pass to @c_handler calls
|
||||
*
|
||||
* Connects @c_handler to the signal @detailed_signal
|
||||
* on the target instance of @self.
|
||||
*
|
||||
* The instance on which the signal is emitted and @data
|
||||
* will be swapped when calling @c_handler.
|
||||
*
|
||||
* You cannot connect a signal handler after #GSignalGroup:target has been set.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
void
|
||||
g_signal_group_connect_swapped (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data)
|
||||
{
|
||||
g_signal_group_connect_full (self, detailed_signal, c_handler, data, NULL,
|
||||
G_CONNECT_SWAPPED, FALSE);
|
||||
}
|
||||
93
gobject/gsignalgroup.h
Normal file
93
gobject/gsignalgroup.h
Normal file
@ -0,0 +1,93 @@
|
||||
/* GObject - GLib Type, Object, Parameter and Signal Library
|
||||
*
|
||||
* Copyright (C) 2015-2022 Christian Hergert <christian@hergert.me>
|
||||
* Copyright (C) 2015 Garrett Regier <garrettregier@gmail.com>
|
||||
*
|
||||
* 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/>.
|
||||
*
|
||||
* SPDX-License-Identifier: LGPL-2.1-or-later
|
||||
*/
|
||||
|
||||
#ifndef __G_SIGNAL_GROUP_H__
|
||||
#define __G_SIGNAL_GROUP_H__
|
||||
|
||||
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
|
||||
#error "Only <glib-object.h> can be included directly."
|
||||
#endif
|
||||
|
||||
#include <glib.h>
|
||||
#include <gobject/gobject.h>
|
||||
#include <gobject/gsignal.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define G_SIGNAL_GROUP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_SIGNAL_GROUP, GSignalGroup))
|
||||
#define G_IS_SIGNAL_GROUP(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_SIGNAL_GROUP))
|
||||
#define G_TYPE_SIGNAL_GROUP (g_signal_group_get_type())
|
||||
|
||||
/**
|
||||
* GSignalGroup:
|
||||
*
|
||||
* #GSignalGroup is an opaque structure whose members
|
||||
* cannot be accessed directly.
|
||||
*
|
||||
* Since: 2.72
|
||||
*/
|
||||
typedef struct _GSignalGroup GSignalGroup;
|
||||
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
GType g_signal_group_get_type (void) G_GNUC_CONST;
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
GSignalGroup *g_signal_group_new (GType target_type);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_set_target (GSignalGroup *self,
|
||||
gpointer target);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
gpointer g_signal_group_dup_target (GSignalGroup *self);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_block (GSignalGroup *self);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_unblock (GSignalGroup *self);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_connect_object (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer object,
|
||||
GConnectFlags flags);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_connect_data (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data,
|
||||
GClosureNotify notify,
|
||||
GConnectFlags flags);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_connect (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_connect_after (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data);
|
||||
GLIB_AVAILABLE_IN_2_72
|
||||
void g_signal_group_connect_swapped (GSignalGroup *self,
|
||||
const gchar *detailed_signal,
|
||||
GCallback c_handler,
|
||||
gpointer data);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __G_SIGNAL_GROUP_H__ */
|
||||
@ -2,6 +2,7 @@ gobject_install_headers = files(
|
||||
'gobject-autocleanups.h',
|
||||
'glib-types.h',
|
||||
'gbinding.h',
|
||||
'gbindinggroup.h',
|
||||
'gboxed.h',
|
||||
'gclosure.h',
|
||||
'genums.h',
|
||||
@ -10,6 +11,7 @@ gobject_install_headers = files(
|
||||
'gparam.h',
|
||||
'gparamspecs.h',
|
||||
'gsignal.h',
|
||||
'gsignalgroup.h',
|
||||
'gsourceclosure.h',
|
||||
'gtype.h',
|
||||
'gtypemodule.h',
|
||||
@ -25,6 +27,7 @@ install_headers(gobject_install_headers, subdir : 'glib-2.0/gobject')
|
||||
gobject_sources = files(
|
||||
'gatomicarray.c',
|
||||
'gbinding.c',
|
||||
'gbindinggroup.c',
|
||||
'gboxed.c',
|
||||
'gclosure.c',
|
||||
'genums.c',
|
||||
@ -33,6 +36,7 @@ gobject_sources = files(
|
||||
'gparam.c',
|
||||
'gparamspecs.c',
|
||||
'gsignal.c',
|
||||
'gsignalgroup.c',
|
||||
'gsourceclosure.c',
|
||||
'gtype.c',
|
||||
'gtypemodule.c',
|
||||
|
||||
694
gobject/tests/bindinggroup.c
Normal file
694
gobject/tests/bindinggroup.c
Normal file
@ -0,0 +1,694 @@
|
||||
/* GObject - GLib Type, Object, Parameter and Signal Library
|
||||
*
|
||||
* Copyright (C) 2015-2022 Christian Hergert <christian@hergert.me>
|
||||
* Copyright (C) 2015 Garrett Regier <garrettregier@gmail.com>
|
||||
*
|
||||
* 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/>.
|
||||
*
|
||||
* SPDX-License-Identifier: LGPL-2.1-or-later
|
||||
*/
|
||||
|
||||
#include <glib-object.h>
|
||||
|
||||
/* Copied from glib */
|
||||
typedef struct _BindingSource
|
||||
{
|
||||
GObject parent_instance;
|
||||
|
||||
gint foo;
|
||||
gint bar;
|
||||
gdouble value;
|
||||
gboolean toggle;
|
||||
} BindingSource;
|
||||
|
||||
typedef struct _BindingSourceClass
|
||||
{
|
||||
GObjectClass parent_class;
|
||||
} BindingSourceClass;
|
||||
|
||||
enum
|
||||
{
|
||||
PROP_SOURCE_FOO = 1,
|
||||
PROP_SOURCE_BAR,
|
||||
PROP_SOURCE_VALUE,
|
||||
PROP_SOURCE_TOGGLE
|
||||
};
|
||||
|
||||
static GType binding_source_get_type (void);
|
||||
G_DEFINE_TYPE (BindingSource, binding_source, G_TYPE_OBJECT);
|
||||
|
||||
static void
|
||||
binding_source_set_property (GObject *gobject,
|
||||
guint prop_id,
|
||||
const GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
BindingSource *source = (BindingSource *) gobject;
|
||||
|
||||
switch (prop_id)
|
||||
{
|
||||
case PROP_SOURCE_FOO:
|
||||
source->foo = g_value_get_int (value);
|
||||
break;
|
||||
|
||||
case PROP_SOURCE_BAR:
|
||||
source->bar = g_value_get_int (value);
|
||||
break;
|
||||
|
||||
case PROP_SOURCE_VALUE:
|
||||
source->value = g_value_get_double (value);
|
||||
break;
|
||||
|
||||
case PROP_SOURCE_TOGGLE:
|
||||
source->toggle = g_value_get_boolean (value);
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
binding_source_get_property (GObject *gobject,
|
||||
guint prop_id,
|
||||
GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
BindingSource *source = (BindingSource *) gobject;
|
||||
|
||||
switch (prop_id)
|
||||
{
|
||||
case PROP_SOURCE_FOO:
|
||||
g_value_set_int (value, source->foo);
|
||||
break;
|
||||
|
||||
case PROP_SOURCE_BAR:
|
||||
g_value_set_int (value, source->bar);
|
||||
break;
|
||||
|
||||
case PROP_SOURCE_VALUE:
|
||||
g_value_set_double (value, source->value);
|
||||
break;
|
||||
|
||||
case PROP_SOURCE_TOGGLE:
|
||||
g_value_set_boolean (value, source->toggle);
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
binding_source_class_init (BindingSourceClass *klass)
|
||||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
||||
|
||||
gobject_class->set_property = binding_source_set_property;
|
||||
gobject_class->get_property = binding_source_get_property;
|
||||
|
||||
g_object_class_install_property (gobject_class, PROP_SOURCE_FOO,
|
||||
g_param_spec_int ("foo", "Foo", "Foo",
|
||||
-1, 100,
|
||||
0,
|
||||
G_PARAM_READWRITE));
|
||||
g_object_class_install_property (gobject_class, PROP_SOURCE_BAR,
|
||||
g_param_spec_int ("bar", "Bar", "Bar",
|
||||
-1, 100,
|
||||
0,
|
||||
G_PARAM_READWRITE));
|
||||
g_object_class_install_property (gobject_class, PROP_SOURCE_VALUE,
|
||||
g_param_spec_double ("value", "Value", "Value",
|
||||
-100.0, 200.0,
|
||||
0.0,
|
||||
G_PARAM_READWRITE));
|
||||
g_object_class_install_property (gobject_class, PROP_SOURCE_TOGGLE,
|
||||
g_param_spec_boolean ("toggle", "Toggle", "Toggle",
|
||||
FALSE,
|
||||
G_PARAM_READWRITE));
|
||||
}
|
||||
|
||||
static void
|
||||
binding_source_init (BindingSource *self)
|
||||
{
|
||||
}
|
||||
|
||||
typedef struct _BindingTarget
|
||||
{
|
||||
GObject parent_instance;
|
||||
|
||||
gint bar;
|
||||
gdouble value;
|
||||
gboolean toggle;
|
||||
} BindingTarget;
|
||||
|
||||
typedef struct _BindingTargetClass
|
||||
{
|
||||
GObjectClass parent_class;
|
||||
} BindingTargetClass;
|
||||
|
||||
enum
|
||||
{
|
||||
PROP_TARGET_BAR = 1,
|
||||
PROP_TARGET_VALUE,
|
||||
PROP_TARGET_TOGGLE
|
||||
};
|
||||
|
||||
static GType binding_target_get_type (void);
|
||||
G_DEFINE_TYPE (BindingTarget, binding_target, G_TYPE_OBJECT);
|
||||
|
||||
static void
|
||||
binding_target_set_property (GObject *gobject,
|
||||
guint prop_id,
|
||||
const GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
BindingTarget *target = (BindingTarget *) gobject;
|
||||
|
||||
switch (prop_id)
|
||||
{
|
||||
case PROP_TARGET_BAR:
|
||||
target->bar = g_value_get_int (value);
|
||||
break;
|
||||
|
||||
case PROP_TARGET_VALUE:
|
||||
target->value = g_value_get_double (value);
|
||||
break;
|
||||
|
||||
case PROP_TARGET_TOGGLE:
|
||||
target->toggle = g_value_get_boolean (value);
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
binding_target_get_property (GObject *gobject,
|
||||
guint prop_id,
|
||||
GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
BindingTarget *target = (BindingTarget *) gobject;
|
||||
|
||||
switch (prop_id)
|
||||
{
|
||||
case PROP_TARGET_BAR:
|
||||
g_value_set_int (value, target->bar);
|
||||
break;
|
||||
|
||||
case PROP_TARGET_VALUE:
|
||||
g_value_set_double (value, target->value);
|
||||
break;
|
||||
|
||||
case PROP_TARGET_TOGGLE:
|
||||
g_value_set_boolean (value, target->toggle);
|
||||
break;
|
||||
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
binding_target_class_init (BindingTargetClass *klass)
|
||||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
||||
|
||||
gobject_class->set_property = binding_target_set_property;
|
||||
gobject_class->get_property = binding_target_get_property;
|
||||
|
||||
g_object_class_install_property (gobject_class, PROP_TARGET_BAR,
|
||||
g_param_spec_int ("bar", "Bar", "Bar",
|
||||
-1, 100,
|
||||
0,
|
||||
G_PARAM_READWRITE));
|
||||
g_object_class_install_property (gobject_class, PROP_TARGET_VALUE,
|
||||
g_param_spec_double ("value", "Value", "Value",
|
||||
-100.0, 200.0,
|
||||
0.0,
|
||||
G_PARAM_READWRITE));
|
||||
g_object_class_install_property (gobject_class, PROP_TARGET_TOGGLE,
|
||||
g_param_spec_boolean ("toggle", "Toggle", "Toggle",
|
||||
FALSE,
|
||||
G_PARAM_READWRITE));
|
||||
}
|
||||
|
||||
static void
|
||||
binding_target_init (BindingTarget *self)
|
||||
{
|
||||
}
|
||||
|
||||
static gboolean
|
||||
celsius_to_fahrenheit (GBinding *binding,
|
||||
const GValue *from_value,
|
||||
GValue *to_value,
|
||||
gpointer user_data G_GNUC_UNUSED)
|
||||
{
|
||||
gdouble celsius, fahrenheit;
|
||||
|
||||
g_assert_true (G_VALUE_HOLDS (from_value, G_TYPE_DOUBLE));
|
||||
g_assert_true (G_VALUE_HOLDS (to_value, G_TYPE_DOUBLE));
|
||||
|
||||
celsius = g_value_get_double (from_value);
|
||||
fahrenheit = (9 * celsius / 5) + 32.0;
|
||||
|
||||
if (g_test_verbose ())
|
||||
g_printerr ("Converting %.2fC to %.2fF\n", celsius, fahrenheit);
|
||||
|
||||
g_value_set_double (to_value, fahrenheit);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
fahrenheit_to_celsius (GBinding *binding,
|
||||
const GValue *from_value,
|
||||
GValue *to_value,
|
||||
gpointer user_data G_GNUC_UNUSED)
|
||||
{
|
||||
gdouble celsius, fahrenheit;
|
||||
|
||||
g_assert_true (G_VALUE_HOLDS (from_value, G_TYPE_DOUBLE));
|
||||
g_assert_true (G_VALUE_HOLDS (to_value, G_TYPE_DOUBLE));
|
||||
|
||||
fahrenheit = g_value_get_double (from_value);
|
||||
celsius = 5 * (fahrenheit - 32.0) / 9;
|
||||
|
||||
if (g_test_verbose ())
|
||||
g_printerr ("Converting %.2fF to %.2fC\n", fahrenheit, celsius);
|
||||
|
||||
g_value_set_double (to_value, celsius);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_invalid (void)
|
||||
{
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
|
||||
|
||||
/* Invalid Target Property */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*find_property*target_property*!=*NULL*");
|
||||
g_binding_group_bind (group, "value",
|
||||
target, "does-not-exist",
|
||||
G_BINDING_DEFAULT);
|
||||
g_test_assert_expected_messages ();
|
||||
|
||||
g_binding_group_set_source (group, NULL);
|
||||
|
||||
/* Invalid Source Property */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*find_property*source_property*!=*NULL*");
|
||||
g_binding_group_set_source (group, source);
|
||||
g_binding_group_bind (group, "does-not-exist",
|
||||
target, "value",
|
||||
G_BINDING_DEFAULT);
|
||||
g_test_assert_expected_messages ();
|
||||
|
||||
g_binding_group_set_source (group, NULL);
|
||||
|
||||
/* Invalid Source */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*find_property*->source_property*!=*NULL*");
|
||||
g_binding_group_bind (group, "does-not-exist",
|
||||
target, "value",
|
||||
G_BINDING_DEFAULT);
|
||||
g_binding_group_set_source (group, source);
|
||||
g_test_assert_expected_messages ();
|
||||
|
||||
g_object_unref (target);
|
||||
g_object_unref (source);
|
||||
g_object_unref (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_default (void)
|
||||
{
|
||||
gsize i, j;
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *targets[5];
|
||||
BindingSource *readback;
|
||||
|
||||
for (i = 0; i < G_N_ELEMENTS (targets); ++i)
|
||||
{
|
||||
targets[i] = g_object_new (binding_target_get_type (), NULL);
|
||||
g_binding_group_bind (group, "foo",
|
||||
targets[i], "bar",
|
||||
G_BINDING_DEFAULT);
|
||||
}
|
||||
|
||||
g_assert_null (g_binding_group_dup_source (group));
|
||||
g_binding_group_set_source (group, source);
|
||||
readback = g_binding_group_dup_source (group);
|
||||
g_assert_true (readback == source);
|
||||
g_object_unref (readback);
|
||||
|
||||
for (i = 0; i < 2; ++i)
|
||||
{
|
||||
g_object_set (source, "foo", 42, NULL);
|
||||
for (j = 0; j < G_N_ELEMENTS (targets); ++j)
|
||||
g_assert_cmpint (source->foo, ==, targets[j]->bar);
|
||||
|
||||
g_object_set (targets[0], "bar", 47, NULL);
|
||||
g_assert_cmpint (source->foo, !=, targets[0]->bar);
|
||||
|
||||
/* Check that we transition the source correctly */
|
||||
g_binding_group_set_source (group, NULL);
|
||||
g_assert_null (g_binding_group_dup_source (group));
|
||||
g_binding_group_set_source (group, source);
|
||||
readback = g_binding_group_dup_source (group);
|
||||
g_assert_true (readback == source);
|
||||
g_object_unref (readback);
|
||||
}
|
||||
|
||||
g_object_unref (group);
|
||||
|
||||
g_object_set (source, "foo", 0, NULL);
|
||||
for (i = 0; i < G_N_ELEMENTS (targets); ++i)
|
||||
g_assert_cmpint (source->foo, !=, targets[i]->bar);
|
||||
|
||||
g_object_unref (source);
|
||||
for (i = 0; i < G_N_ELEMENTS (targets); ++i)
|
||||
g_object_unref (targets[i]);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_bidirectional (void)
|
||||
{
|
||||
gsize i, j;
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *targets[5];
|
||||
BindingSource *readback;
|
||||
|
||||
for (i = 0; i < G_N_ELEMENTS (targets); ++i)
|
||||
{
|
||||
targets[i] = g_object_new (binding_target_get_type (), NULL);
|
||||
g_binding_group_bind (group, "value",
|
||||
targets[i], "value",
|
||||
G_BINDING_BIDIRECTIONAL);
|
||||
}
|
||||
|
||||
g_assert_null (g_binding_group_dup_source (group));
|
||||
g_binding_group_set_source (group, source);
|
||||
readback = g_binding_group_dup_source (group);
|
||||
g_assert_true (readback == source);
|
||||
g_object_unref (readback);
|
||||
|
||||
for (i = 0; i < 2; ++i)
|
||||
{
|
||||
g_object_set (source, "value", 42.0, NULL);
|
||||
for (j = 0; j < G_N_ELEMENTS (targets); ++j)
|
||||
g_assert_cmpfloat (source->value, ==, targets[j]->value);
|
||||
|
||||
g_object_set (targets[0], "value", 47.0, NULL);
|
||||
g_assert_cmpfloat (source->value, ==, targets[0]->value);
|
||||
|
||||
/* Check that we transition the source correctly */
|
||||
g_binding_group_set_source (group, NULL);
|
||||
g_assert_null (g_binding_group_dup_source (group));
|
||||
g_binding_group_set_source (group, source);
|
||||
readback = g_binding_group_dup_source (group);
|
||||
g_assert_true (readback == source);
|
||||
g_object_unref (readback);
|
||||
}
|
||||
|
||||
g_object_unref (group);
|
||||
|
||||
g_object_set (targets[0], "value", 0.0, NULL);
|
||||
g_assert_cmpfloat (source->value, !=, targets[0]->value);
|
||||
|
||||
g_object_unref (source);
|
||||
for (i = 0; i < G_N_ELEMENTS (targets); ++i)
|
||||
g_object_unref (targets[i]);
|
||||
}
|
||||
|
||||
static void
|
||||
transform_destroy_notify (gpointer data)
|
||||
{
|
||||
gboolean *transform_destroy_called = data;
|
||||
|
||||
*transform_destroy_called = TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_transform (void)
|
||||
{
|
||||
gboolean transform_destroy_called = FALSE;
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
|
||||
|
||||
g_binding_group_set_source (group, source);
|
||||
g_binding_group_bind_full (group, "value",
|
||||
target, "value",
|
||||
G_BINDING_BIDIRECTIONAL,
|
||||
celsius_to_fahrenheit,
|
||||
fahrenheit_to_celsius,
|
||||
&transform_destroy_called,
|
||||
transform_destroy_notify);
|
||||
|
||||
g_object_set (source, "value", 24.0, NULL);
|
||||
g_assert_cmpfloat (target->value, ==, ((9 * 24.0 / 5) + 32.0));
|
||||
|
||||
g_object_set (target, "value", 69.0, NULL);
|
||||
g_assert_cmpfloat (source->value, ==, (5 * (69.0 - 32.0) / 9));
|
||||
|
||||
/* The GDestroyNotify should only be called when the
|
||||
* set is freed, not when the various GBindings are freed
|
||||
*/
|
||||
g_binding_group_set_source (group, NULL);
|
||||
g_assert_false (transform_destroy_called);
|
||||
|
||||
g_object_unref (group);
|
||||
g_assert_true (transform_destroy_called);
|
||||
|
||||
g_object_unref (source);
|
||||
g_object_unref (target);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_transform_closures (void)
|
||||
{
|
||||
gboolean transform_destroy_called_1 = FALSE;
|
||||
gboolean transform_destroy_called_2 = FALSE;
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
|
||||
GClosure *c2f_closure, *f2c_closure;
|
||||
|
||||
c2f_closure = g_cclosure_new (G_CALLBACK (celsius_to_fahrenheit),
|
||||
&transform_destroy_called_1,
|
||||
(GClosureNotify) transform_destroy_notify);
|
||||
f2c_closure = g_cclosure_new (G_CALLBACK (fahrenheit_to_celsius),
|
||||
&transform_destroy_called_2,
|
||||
(GClosureNotify) transform_destroy_notify);
|
||||
|
||||
g_binding_group_set_source (group, source);
|
||||
g_binding_group_bind_with_closures (group, "value",
|
||||
target, "value",
|
||||
G_BINDING_BIDIRECTIONAL,
|
||||
c2f_closure,
|
||||
f2c_closure);
|
||||
|
||||
g_object_set (source, "value", 24.0, NULL);
|
||||
g_assert_cmpfloat (target->value, ==, ((9 * 24.0 / 5) + 32.0));
|
||||
|
||||
g_object_set (target, "value", 69.0, NULL);
|
||||
g_assert_cmpfloat (source->value, ==, (5 * (69.0 - 32.0) / 9));
|
||||
|
||||
/* The GClsoureNotify should only be called when the
|
||||
* set is freed, not when the various GBindings are freed
|
||||
*/
|
||||
g_binding_group_set_source (group, NULL);
|
||||
g_assert_false (transform_destroy_called_1);
|
||||
g_assert_false (transform_destroy_called_2);
|
||||
|
||||
g_object_unref (group);
|
||||
g_assert_true (transform_destroy_called_1);
|
||||
g_assert_true (transform_destroy_called_2);
|
||||
|
||||
g_object_unref (source);
|
||||
g_object_unref (target);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_same_object (void)
|
||||
{
|
||||
gsize i;
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (),
|
||||
"foo", 100,
|
||||
"bar", 50,
|
||||
NULL);
|
||||
|
||||
g_binding_group_set_source (group, source);
|
||||
g_binding_group_bind (group, "foo",
|
||||
source, "bar",
|
||||
G_BINDING_BIDIRECTIONAL);
|
||||
|
||||
for (i = 0; i < 2; ++i)
|
||||
{
|
||||
g_object_set (source, "foo", 10, NULL);
|
||||
g_assert_cmpint (source->foo, ==, 10);
|
||||
g_assert_cmpint (source->bar, ==, 10);
|
||||
|
||||
g_object_set (source, "bar", 30, NULL);
|
||||
g_assert_cmpint (source->foo, ==, 30);
|
||||
g_assert_cmpint (source->bar, ==, 30);
|
||||
|
||||
/* Check that it is possible both when initially
|
||||
* adding the binding and when changing the source
|
||||
*/
|
||||
g_binding_group_set_source (group, NULL);
|
||||
g_binding_group_set_source (group, source);
|
||||
}
|
||||
|
||||
g_object_unref (source);
|
||||
g_object_unref (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_weak_ref_source (void)
|
||||
{
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
|
||||
BindingSource *readback;
|
||||
|
||||
g_binding_group_set_source (group, source);
|
||||
g_binding_group_bind (group, "value",
|
||||
target, "value",
|
||||
G_BINDING_BIDIRECTIONAL);
|
||||
|
||||
g_object_add_weak_pointer (G_OBJECT (source), (gpointer)&source);
|
||||
readback = g_binding_group_dup_source (group);
|
||||
g_assert_true (readback == source);
|
||||
g_object_unref (readback);
|
||||
g_object_unref (source);
|
||||
g_assert_null (source);
|
||||
g_assert_null (g_binding_group_dup_source (group));
|
||||
|
||||
/* Hopefully this would explode if the binding was still alive */
|
||||
g_object_set (target, "value", 0.0, NULL);
|
||||
|
||||
g_object_unref (target);
|
||||
g_object_unref (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_weak_ref_target (void)
|
||||
{
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
|
||||
|
||||
g_binding_group_set_source (group, source);
|
||||
g_binding_group_bind (group, "value",
|
||||
target, "value",
|
||||
G_BINDING_BIDIRECTIONAL);
|
||||
|
||||
g_object_set (source, "value", 47.0, NULL);
|
||||
g_assert_cmpfloat (target->value, ==, 47.0);
|
||||
|
||||
g_object_add_weak_pointer (G_OBJECT (target), (gpointer)&target);
|
||||
g_object_unref (target);
|
||||
g_assert_null (target);
|
||||
|
||||
/* Hopefully this would explode if the binding was still alive */
|
||||
g_object_set (source, "value", 0.0, NULL);
|
||||
|
||||
g_object_unref (source);
|
||||
g_object_unref (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_properties (void)
|
||||
{
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
|
||||
BindingSource *other;
|
||||
|
||||
g_binding_group_set_source (group, source);
|
||||
g_binding_group_bind (group, "value",
|
||||
target, "value",
|
||||
G_BINDING_BIDIRECTIONAL);
|
||||
|
||||
g_object_get (group, "source", &other, NULL);
|
||||
g_assert_true (other == source);
|
||||
g_object_unref (other);
|
||||
|
||||
g_object_set (group, "source", NULL, NULL);
|
||||
g_object_get (group, "source", &other, NULL);
|
||||
g_assert_null (other);
|
||||
|
||||
g_object_add_weak_pointer (G_OBJECT (target), (gpointer)&target);
|
||||
g_object_unref (target);
|
||||
g_assert_null (target);
|
||||
|
||||
g_object_unref (source);
|
||||
g_object_unref (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_weak_notify_no_bindings (void)
|
||||
{
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
|
||||
g_binding_group_set_source (group, source);
|
||||
g_assert_finalize_object (source);
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_binding_group_empty_closures (void)
|
||||
{
|
||||
GBindingGroup *group = g_binding_group_new ();
|
||||
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
|
||||
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
|
||||
|
||||
g_binding_group_bind_full (group, "value", target, "value", 0,
|
||||
NULL, NULL, NULL, NULL);
|
||||
|
||||
g_assert_finalize_object (group);
|
||||
g_assert_finalize_object (target);
|
||||
g_assert_finalize_object (source);
|
||||
}
|
||||
|
||||
gint
|
||||
main (gint argc,
|
||||
gchar *argv[])
|
||||
{
|
||||
g_test_init (&argc, &argv, NULL);
|
||||
g_test_add_func ("/GObject/BindingGroup/invalid", test_binding_group_invalid);
|
||||
g_test_add_func ("/GObject/BindingGroup/default", test_binding_group_default);
|
||||
g_test_add_func ("/GObject/BindingGroup/bidirectional", test_binding_group_bidirectional);
|
||||
g_test_add_func ("/GObject/BindingGroup/transform", test_binding_group_transform);
|
||||
g_test_add_func ("/GObject/BindingGroup/transform-closures", test_binding_group_transform_closures);
|
||||
g_test_add_func ("/GObject/BindingGroup/same-object", test_binding_group_same_object);
|
||||
g_test_add_func ("/GObject/BindingGroup/weak-ref-source", test_binding_group_weak_ref_source);
|
||||
g_test_add_func ("/GObject/BindingGroup/weak-ref-target", test_binding_group_weak_ref_target);
|
||||
g_test_add_func ("/GObject/BindingGroup/properties", test_binding_group_properties);
|
||||
g_test_add_func ("/GObject/BindingGroup/weak-notify-no-bindings", test_binding_group_weak_notify_no_bindings);
|
||||
g_test_add_func ("/GObject/BindingGroup/empty-closures", test_binding_group_empty_closures);
|
||||
return g_test_run ();
|
||||
}
|
||||
@ -37,6 +37,7 @@ gobject_tests = {
|
||||
'threadtests' : {},
|
||||
'dynamictests' : {},
|
||||
'binding' : {},
|
||||
'bindinggroup' : {},
|
||||
'properties' : {},
|
||||
'reference' : {},
|
||||
'flags' : {},
|
||||
@ -53,6 +54,7 @@ gobject_tests = {
|
||||
'signals' : {
|
||||
'source' : ['signals.c', marshalers_h, marshalers_c],
|
||||
},
|
||||
'signalgroup' : {},
|
||||
'testing' : {},
|
||||
'type-flags' : {},
|
||||
}
|
||||
|
||||
650
gobject/tests/signalgroup.c
Normal file
650
gobject/tests/signalgroup.c
Normal file
@ -0,0 +1,650 @@
|
||||
/* GObject - GLib Type, Object, Parameter and Signal Library
|
||||
*
|
||||
* Copyright (C) 2015-2022 Christian Hergert <christian@hergert.me>
|
||||
* Copyright (C) 2015 Garrett Regier <garrettregier@gmail.com>
|
||||
*
|
||||
* 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/>.
|
||||
*
|
||||
* SPDX-License-Identifier: LGPL-2.1-or-later
|
||||
*/
|
||||
|
||||
#include <glib-object.h>
|
||||
|
||||
G_DECLARE_FINAL_TYPE (SignalTarget, signal_target, TEST, SIGNAL_TARGET, GObject)
|
||||
|
||||
struct _SignalTarget
|
||||
{
|
||||
GObject parent_instance;
|
||||
};
|
||||
|
||||
G_DEFINE_TYPE (SignalTarget, signal_target, G_TYPE_OBJECT)
|
||||
|
||||
static G_DEFINE_QUARK (detail, signal_detail);
|
||||
|
||||
enum {
|
||||
THE_SIGNAL,
|
||||
NEVER_EMITTED,
|
||||
LAST_SIGNAL
|
||||
};
|
||||
|
||||
static guint signals[LAST_SIGNAL];
|
||||
|
||||
static void
|
||||
signal_target_class_init (SignalTargetClass *klass)
|
||||
{
|
||||
signals[THE_SIGNAL] =
|
||||
g_signal_new ("the-signal",
|
||||
G_TYPE_FROM_CLASS (klass),
|
||||
G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
|
||||
0,
|
||||
NULL, NULL, NULL,
|
||||
G_TYPE_NONE,
|
||||
1,
|
||||
G_TYPE_OBJECT);
|
||||
|
||||
signals[NEVER_EMITTED] =
|
||||
g_signal_new ("never-emitted",
|
||||
G_TYPE_FROM_CLASS (klass),
|
||||
G_SIGNAL_RUN_LAST,
|
||||
0,
|
||||
NULL, NULL, NULL,
|
||||
G_TYPE_NONE,
|
||||
1,
|
||||
G_TYPE_OBJECT);
|
||||
}
|
||||
|
||||
static void
|
||||
signal_target_init (SignalTarget *self)
|
||||
{
|
||||
}
|
||||
|
||||
static gint global_signal_calls;
|
||||
static gint global_weak_notify_called;
|
||||
|
||||
static void
|
||||
connect_before_cb (SignalTarget *target,
|
||||
GSignalGroup *group,
|
||||
gint *signal_calls)
|
||||
{
|
||||
SignalTarget *readback;
|
||||
|
||||
g_assert_true (TEST_IS_SIGNAL_TARGET (target));
|
||||
g_assert_true (G_IS_SIGNAL_GROUP (group));
|
||||
g_assert_nonnull (signal_calls);
|
||||
g_assert_true (signal_calls == &global_signal_calls);
|
||||
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
|
||||
*signal_calls += 1;
|
||||
}
|
||||
|
||||
static void
|
||||
connect_after_cb (SignalTarget *target,
|
||||
GSignalGroup *group,
|
||||
gint *signal_calls)
|
||||
{
|
||||
SignalTarget *readback;
|
||||
|
||||
g_assert_true (TEST_IS_SIGNAL_TARGET (target));
|
||||
g_assert_true (G_IS_SIGNAL_GROUP (group));
|
||||
g_assert_nonnull (signal_calls);
|
||||
g_assert_true (signal_calls == &global_signal_calls);
|
||||
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
|
||||
g_assert_cmpint (*signal_calls, ==, 4);
|
||||
*signal_calls += 1;
|
||||
}
|
||||
|
||||
static void
|
||||
connect_swapped_cb (gint *signal_calls,
|
||||
GSignalGroup *group,
|
||||
SignalTarget *target)
|
||||
{
|
||||
SignalTarget *readback;
|
||||
|
||||
g_assert_true (signal_calls != NULL);
|
||||
g_assert_true (signal_calls == &global_signal_calls);
|
||||
g_assert_true (G_IS_SIGNAL_GROUP (group));
|
||||
g_assert_true (TEST_IS_SIGNAL_TARGET (target));
|
||||
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
|
||||
*signal_calls += 1;
|
||||
}
|
||||
|
||||
static void
|
||||
connect_object_cb (SignalTarget *target,
|
||||
GSignalGroup *group,
|
||||
GObject *object)
|
||||
{
|
||||
SignalTarget *readback;
|
||||
gint *signal_calls;
|
||||
|
||||
g_assert_true (TEST_IS_SIGNAL_TARGET (target));
|
||||
g_assert_true (G_IS_SIGNAL_GROUP (group));
|
||||
g_assert_true (G_IS_OBJECT (object));
|
||||
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
|
||||
signal_calls = g_object_get_data (object, "signal-calls");
|
||||
g_assert_nonnull (signal_calls);
|
||||
g_assert_true (signal_calls == &global_signal_calls);
|
||||
|
||||
*signal_calls += 1;
|
||||
}
|
||||
|
||||
static void
|
||||
connect_bad_detail_cb (SignalTarget *target,
|
||||
GSignalGroup *group,
|
||||
GObject *object)
|
||||
{
|
||||
g_error ("This detailed signal is never emitted!");
|
||||
}
|
||||
|
||||
static void
|
||||
connect_never_emitted_cb (SignalTarget *target,
|
||||
gboolean *weak_notify_called)
|
||||
{
|
||||
g_error ("This signal is never emitted!");
|
||||
}
|
||||
|
||||
static void
|
||||
connect_data_notify_cb (gboolean *weak_notify_called,
|
||||
GClosure *closure)
|
||||
{
|
||||
g_assert_nonnull (weak_notify_called);
|
||||
g_assert_true (weak_notify_called == &global_weak_notify_called);
|
||||
g_assert_nonnull (closure);
|
||||
|
||||
g_assert_false (*weak_notify_called);
|
||||
*weak_notify_called = TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
connect_data_weak_notify_cb (gboolean *weak_notify_called,
|
||||
GSignalGroup *group)
|
||||
{
|
||||
g_assert_nonnull (weak_notify_called);
|
||||
g_assert_true (weak_notify_called == &global_weak_notify_called);
|
||||
g_assert_true (G_IS_SIGNAL_GROUP (group));
|
||||
|
||||
g_assert_true (*weak_notify_called);
|
||||
}
|
||||
|
||||
static void
|
||||
connect_all_signals (GSignalGroup *group)
|
||||
{
|
||||
GObject *object;
|
||||
|
||||
/* Check that these are called in the right order */
|
||||
g_signal_group_connect (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (connect_before_cb),
|
||||
&global_signal_calls);
|
||||
g_signal_group_connect_after (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (connect_after_cb),
|
||||
&global_signal_calls);
|
||||
|
||||
/* Check that this is called with the arguments swapped */
|
||||
g_signal_group_connect_swapped (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (connect_swapped_cb),
|
||||
&global_signal_calls);
|
||||
|
||||
/* Check that this is called with the arguments swapped */
|
||||
object = g_object_new (G_TYPE_OBJECT, NULL);
|
||||
g_object_set_data (object, "signal-calls", &global_signal_calls);
|
||||
g_signal_group_connect_object (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (connect_object_cb),
|
||||
object,
|
||||
0);
|
||||
g_object_weak_ref (G_OBJECT (group),
|
||||
(GWeakNotify)g_object_unref,
|
||||
object);
|
||||
|
||||
/* Check that a detailed signal is handled correctly */
|
||||
g_signal_group_connect (group,
|
||||
"the-signal::detail",
|
||||
G_CALLBACK (connect_before_cb),
|
||||
&global_signal_calls);
|
||||
g_signal_group_connect (group,
|
||||
"the-signal::bad-detail",
|
||||
G_CALLBACK (connect_bad_detail_cb),
|
||||
NULL);
|
||||
|
||||
/* Check that the notify is called correctly */
|
||||
global_weak_notify_called = FALSE;
|
||||
g_signal_group_connect_data (group,
|
||||
"never-emitted",
|
||||
G_CALLBACK (connect_never_emitted_cb),
|
||||
&global_weak_notify_called,
|
||||
(GClosureNotify)connect_data_notify_cb,
|
||||
0);
|
||||
g_object_weak_ref (G_OBJECT (group),
|
||||
(GWeakNotify)connect_data_weak_notify_cb,
|
||||
&global_weak_notify_called);
|
||||
}
|
||||
|
||||
static void
|
||||
assert_signals (SignalTarget *target,
|
||||
GSignalGroup *group,
|
||||
gboolean success)
|
||||
{
|
||||
g_assert (TEST_IS_SIGNAL_TARGET (target));
|
||||
g_assert (group == NULL || G_IS_SIGNAL_GROUP (group));
|
||||
|
||||
global_signal_calls = 0;
|
||||
g_signal_emit (target, signals[THE_SIGNAL],
|
||||
signal_detail_quark (), group);
|
||||
g_assert_cmpint (global_signal_calls, ==, success ? 5 : 0);
|
||||
}
|
||||
|
||||
static void
|
||||
dummy_handler (void)
|
||||
{
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_invalid (void)
|
||||
{
|
||||
GObject *invalid_target = g_object_new (G_TYPE_OBJECT, NULL);
|
||||
SignalTarget *target = g_object_new (signal_target_get_type (), NULL);
|
||||
GSignalGroup *group = g_signal_group_new (signal_target_get_type ());
|
||||
|
||||
/* Invalid Target Type */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*g_type_is_a*G_TYPE_OBJECT*");
|
||||
g_signal_group_new (G_TYPE_DATE_TIME);
|
||||
g_test_assert_expected_messages ();
|
||||
|
||||
/* Invalid Target */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*Failed to set GSignalGroup of target type SignalTarget using target * of type GObject*");
|
||||
g_signal_group_set_target (group, invalid_target);
|
||||
g_assert_finalize_object (group);
|
||||
g_test_assert_expected_messages ();
|
||||
|
||||
/* Invalid Signal Name */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*g_signal_parse_name*");
|
||||
group = g_signal_group_new (signal_target_get_type ());
|
||||
g_signal_group_connect (group,
|
||||
"does-not-exist",
|
||||
G_CALLBACK (connect_before_cb),
|
||||
NULL);
|
||||
g_test_assert_expected_messages ();
|
||||
g_assert_finalize_object (group);
|
||||
|
||||
/* Invalid Callback */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*c_handler != NULL*");
|
||||
group = g_signal_group_new (signal_target_get_type ());
|
||||
g_signal_group_connect (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (NULL),
|
||||
NULL);
|
||||
g_test_assert_expected_messages ();
|
||||
g_assert_finalize_object (group);
|
||||
|
||||
/* Connecting after setting target */
|
||||
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
|
||||
"*Cannot add signals after setting target*");
|
||||
group = g_signal_group_new (signal_target_get_type ());
|
||||
g_signal_group_set_target (group, target);
|
||||
g_signal_group_connect (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (dummy_handler),
|
||||
NULL);
|
||||
g_test_assert_expected_messages ();
|
||||
g_assert_finalize_object (group);
|
||||
|
||||
g_assert_finalize_object (target);
|
||||
g_assert_finalize_object (invalid_target);
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_simple (void)
|
||||
{
|
||||
SignalTarget *target;
|
||||
GSignalGroup *group;
|
||||
SignalTarget *readback;
|
||||
|
||||
/* Set the target before connecting the signals */
|
||||
group = g_signal_group_new (signal_target_get_type ());
|
||||
target = g_object_new (signal_target_get_type (), NULL);
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
g_signal_group_set_target (group, target);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
g_assert_finalize_object (group);
|
||||
assert_signals (target, NULL, FALSE);
|
||||
g_assert_finalize_object (target);
|
||||
|
||||
group = g_signal_group_new (signal_target_get_type ());
|
||||
target = g_object_new (signal_target_get_type (), NULL);
|
||||
connect_all_signals (group);
|
||||
g_signal_group_set_target (group, target);
|
||||
assert_signals (target, group, TRUE);
|
||||
g_assert_finalize_object (target);
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_changing_target (void)
|
||||
{
|
||||
SignalTarget *target1, *target2;
|
||||
GSignalGroup *group = g_signal_group_new (signal_target_get_type ());
|
||||
SignalTarget *readback;
|
||||
|
||||
connect_all_signals (group);
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
|
||||
/* Set the target after connecting the signals */
|
||||
target1 = g_object_new (signal_target_get_type (), NULL);
|
||||
g_signal_group_set_target (group, target1);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target1);
|
||||
g_object_unref (readback);
|
||||
|
||||
assert_signals (target1, group, TRUE);
|
||||
|
||||
/* Set the same target */
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target1);
|
||||
g_object_unref (readback);
|
||||
g_signal_group_set_target (group, target1);
|
||||
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target1);
|
||||
g_object_unref (readback);
|
||||
|
||||
assert_signals (target1, group, TRUE);
|
||||
|
||||
/* Set a new target when the current target is non-NULL */
|
||||
target2 = g_object_new (signal_target_get_type (), NULL);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target1);
|
||||
g_object_unref (readback);
|
||||
|
||||
g_signal_group_set_target (group, target2);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target2);
|
||||
g_object_unref (readback);
|
||||
|
||||
assert_signals (target2, group, TRUE);
|
||||
|
||||
g_assert_finalize_object (target2);
|
||||
g_assert_finalize_object (target1);
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
static void
|
||||
assert_blocking (SignalTarget *target,
|
||||
GSignalGroup *group,
|
||||
gint count)
|
||||
{
|
||||
gint i;
|
||||
|
||||
assert_signals (target, group, TRUE);
|
||||
|
||||
/* Assert that multiple blocks are effective */
|
||||
for (i = 0; i < count; ++i)
|
||||
{
|
||||
g_signal_group_block (group);
|
||||
assert_signals (target, group, FALSE);
|
||||
}
|
||||
|
||||
/* Assert that the signal is not emitted after the first unblock */
|
||||
for (i = 0; i < count; ++i)
|
||||
{
|
||||
assert_signals (target, group, FALSE);
|
||||
g_signal_group_unblock (group);
|
||||
}
|
||||
|
||||
assert_signals (target, group, TRUE);
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_blocking (void)
|
||||
{
|
||||
SignalTarget *target1, *target2, *readback;
|
||||
GSignalGroup *group = g_signal_group_new (signal_target_get_type ());
|
||||
|
||||
/* Test blocking and unblocking null target */
|
||||
g_signal_group_block (group);
|
||||
g_signal_group_unblock (group);
|
||||
|
||||
connect_all_signals (group);
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
|
||||
target1 = g_object_new (signal_target_get_type (), NULL);
|
||||
g_signal_group_set_target (group, target1);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target1);
|
||||
g_object_unref (readback);
|
||||
|
||||
assert_blocking (target1, group, 1);
|
||||
assert_blocking (target1, group, 3);
|
||||
assert_blocking (target1, group, 15);
|
||||
|
||||
/* Assert that blocking transfers across changing the target */
|
||||
g_signal_group_block (group);
|
||||
g_signal_group_block (group);
|
||||
|
||||
/* Set a new target when the current target is non-NULL */
|
||||
target2 = g_object_new (signal_target_get_type (), NULL);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target1);
|
||||
g_object_unref (readback);
|
||||
g_signal_group_set_target (group, target2);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target2);
|
||||
g_object_unref (readback);
|
||||
|
||||
assert_signals (target2, group, FALSE);
|
||||
g_signal_group_unblock (group);
|
||||
assert_signals (target2, group, FALSE);
|
||||
g_signal_group_unblock (group);
|
||||
assert_signals (target2, group, TRUE);
|
||||
|
||||
g_assert_finalize_object (target2);
|
||||
g_assert_finalize_object (target1);
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_weak_ref_target (void)
|
||||
{
|
||||
SignalTarget *target = g_object_new (signal_target_get_type (), NULL);
|
||||
GSignalGroup *group = g_signal_group_new (signal_target_get_type ());
|
||||
SignalTarget *readback;
|
||||
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
g_signal_group_set_target (group, target);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
|
||||
g_assert_finalize_object (target);
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_connect_object (void)
|
||||
{
|
||||
GObject *object = g_object_new (G_TYPE_OBJECT, NULL);
|
||||
SignalTarget *target = g_object_new (signal_target_get_type (), NULL);
|
||||
GSignalGroup *group = g_signal_group_new (signal_target_get_type ());
|
||||
SignalTarget *readback;
|
||||
|
||||
/* We already do basic connect_object() tests in connect_signals(),
|
||||
* this is only needed to test the specifics of connect_object()
|
||||
*/
|
||||
g_signal_group_connect_object (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (connect_object_cb),
|
||||
object,
|
||||
0);
|
||||
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
g_signal_group_set_target (group, target);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
|
||||
g_assert_finalize_object (object);
|
||||
|
||||
/* This would cause a warning if the SignalGroup did not
|
||||
* have a weakref on the object as it would try to connect again
|
||||
*/
|
||||
g_signal_group_set_target (group, NULL);
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
g_signal_group_set_target (group, target);
|
||||
readback = g_signal_group_dup_target (group);
|
||||
g_assert_true (readback == target);
|
||||
g_object_unref (readback);
|
||||
|
||||
g_assert_finalize_object (group);
|
||||
g_assert_finalize_object (target);
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_signal_parsing (void)
|
||||
{
|
||||
g_test_trap_subprocess ("/GObject/SignalGroup/signal-parsing/subprocess", 0,
|
||||
G_TEST_SUBPROCESS_INHERIT_STDERR);
|
||||
g_test_trap_assert_passed ();
|
||||
g_test_trap_assert_stderr ("");
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_signal_parsing_subprocess (void)
|
||||
{
|
||||
GSignalGroup *group;
|
||||
|
||||
/* Check that the class has not been created and with it the
|
||||
* signals registered. This will cause g_signal_parse_name()
|
||||
* to fail unless GSignalGroup calls g_type_class_ref().
|
||||
*/
|
||||
g_assert_null (g_type_class_peek (signal_target_get_type ()));
|
||||
|
||||
group = g_signal_group_new (signal_target_get_type ());
|
||||
g_signal_group_connect (group,
|
||||
"the-signal",
|
||||
G_CALLBACK (connect_before_cb),
|
||||
NULL);
|
||||
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_properties (void)
|
||||
{
|
||||
GSignalGroup *group;
|
||||
SignalTarget *target, *other;
|
||||
GType gtype;
|
||||
|
||||
group = g_signal_group_new (signal_target_get_type ());
|
||||
g_object_get (group,
|
||||
"target", &target,
|
||||
"target-type", >ype,
|
||||
NULL);
|
||||
g_assert_cmpint (gtype, ==, signal_target_get_type ());
|
||||
g_assert_null (target);
|
||||
|
||||
target = g_object_new (signal_target_get_type (), NULL);
|
||||
g_object_set (group, "target", target, NULL);
|
||||
g_object_get (group, "target", &other, NULL);
|
||||
g_assert_true (target == other);
|
||||
g_object_unref (other);
|
||||
|
||||
g_assert_finalize_object (target);
|
||||
g_assert_null (g_signal_group_dup_target (group));
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
G_DECLARE_INTERFACE (SignalThing, signal_thing, SIGNAL, THING, GObject)
|
||||
|
||||
struct _SignalThingInterface
|
||||
{
|
||||
GTypeInterface iface;
|
||||
void (*changed) (SignalThing *thing);
|
||||
};
|
||||
|
||||
G_DEFINE_INTERFACE (SignalThing, signal_thing, G_TYPE_OBJECT)
|
||||
|
||||
static guint signal_thing_changed;
|
||||
|
||||
static void
|
||||
signal_thing_default_init (SignalThingInterface *iface)
|
||||
{
|
||||
signal_thing_changed =
|
||||
g_signal_new ("changed",
|
||||
G_TYPE_FROM_INTERFACE (iface),
|
||||
G_SIGNAL_RUN_LAST,
|
||||
G_STRUCT_OFFSET (SignalThingInterface, changed),
|
||||
NULL, NULL, NULL,
|
||||
G_TYPE_NONE, 0);
|
||||
}
|
||||
|
||||
G_GNUC_NORETURN static void
|
||||
thing_changed_cb (SignalThing *thing,
|
||||
gpointer user_data G_GNUC_UNUSED)
|
||||
{
|
||||
g_assert_not_reached ();
|
||||
}
|
||||
|
||||
static void
|
||||
test_signal_group_interface (void)
|
||||
{
|
||||
GSignalGroup *group;
|
||||
|
||||
group = g_signal_group_new (signal_thing_get_type ());
|
||||
g_signal_group_connect (group,
|
||||
"changed",
|
||||
G_CALLBACK (thing_changed_cb),
|
||||
NULL);
|
||||
g_assert_finalize_object (group);
|
||||
}
|
||||
|
||||
gint
|
||||
main (gint argc,
|
||||
gchar *argv[])
|
||||
{
|
||||
g_test_init (&argc, &argv, NULL);
|
||||
g_test_add_func ("/GObject/SignalGroup/invalid", test_signal_group_invalid);
|
||||
g_test_add_func ("/GObject/SignalGroup/simple", test_signal_group_simple);
|
||||
g_test_add_func ("/GObject/SignalGroup/changing-target", test_signal_group_changing_target);
|
||||
g_test_add_func ("/GObject/SignalGroup/blocking", test_signal_group_blocking);
|
||||
g_test_add_func ("/GObject/SignalGroup/weak-ref-target", test_signal_group_weak_ref_target);
|
||||
g_test_add_func ("/GObject/SignalGroup/connect-object", test_signal_group_connect_object);
|
||||
g_test_add_func ("/GObject/SignalGroup/signal-parsing", test_signal_group_signal_parsing);
|
||||
g_test_add_func ("/GObject/SignalGroup/signal-parsing/subprocess", test_signal_group_signal_parsing_subprocess);
|
||||
g_test_add_func ("/GObject/SignalGroup/properties", test_signal_group_properties);
|
||||
g_test_add_func ("/GObject/SignalGroup/interface", test_signal_group_interface);
|
||||
return g_test_run ();
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user