#include <stdlib.h>
#include <gstdio.h>
#include <glib-object.h>
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_0,
PROP_SOURCE_FOO,
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_0,
PROP_TARGET_BAR,
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 (G_VALUE_HOLDS (from_value, G_TYPE_DOUBLE));
g_assert (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 (G_VALUE_HOLDS (from_value, G_TYPE_DOUBLE));
g_assert (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
binding_default (void)
{
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
GBinding *binding;
binding = g_object_bind_property (source, "foo",
target, "bar",
G_BINDING_DEFAULT);
g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);
g_assert ((BindingSource *) g_binding_get_source (binding) == source);
g_assert ((BindingTarget *) g_binding_get_target (binding) == target);
g_assert_cmpstr (g_binding_get_source_property (binding), ==, "foo");
g_assert_cmpstr (g_binding_get_target_property (binding), ==, "bar");
g_assert_cmpint (g_binding_get_flags (binding), ==, G_BINDING_DEFAULT);
g_object_set (source, "foo", 42, NULL);
g_assert_cmpint (source->foo, ==, target->bar);
g_object_set (target, "bar", 47, NULL);
g_assert_cmpint (source->foo, !=, target->bar);
g_object_unref (binding);
g_object_set (source, "foo", 0, NULL);
g_assert_cmpint (source->foo, !=, target->bar);
g_object_unref (source);
g_object_unref (target);
g_assert (binding == NULL);
}
static void
binding_bidirectional (void)
{
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
GBinding *binding;
binding = g_object_bind_property (source, "foo",
target, "bar",
G_BINDING_BIDIRECTIONAL);
g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);
g_object_set (source, "foo", 42, NULL);
g_assert_cmpint (source->foo, ==, target->bar);
g_object_set (target, "bar", 47, NULL);
g_assert_cmpint (source->foo, ==, target->bar);
g_object_unref (binding);
g_object_set (source, "foo", 0, NULL);
g_assert_cmpint (source->foo, !=, target->bar);
g_object_unref (source);
g_object_unref (target);
g_assert (binding == NULL);
}
static void
data_free (gpointer data)
{
gboolean *b = data;
*b = TRUE;
}
static void
binding_transform_default (void)
{
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
GBinding *binding;
gpointer src, trg;
gchar *src_prop, *trg_prop;
GBindingFlags flags;
binding = g_object_bind_property (source, "foo",
target, "value",
G_BINDING_BIDIRECTIONAL);
g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);
g_object_get (binding,
"source", &src,
"source-property", &src_prop,
"target", &trg,
"target-property", &trg_prop,
"flags", &flags,
NULL);
g_assert (src == source);
g_assert (trg == target);
g_assert_cmpstr (src_prop, ==, "foo");
g_assert_cmpstr (trg_prop, ==, "value");
g_assert_cmpint (flags, ==, G_BINDING_BIDIRECTIONAL);
g_object_unref (src);
g_object_unref (trg);
g_free (src_prop);
g_free (trg_prop);
g_object_set (source, "foo", 24, NULL);
g_assert_cmpfloat (target->value, ==, 24.0);
g_object_set (target, "value", 69.0, NULL);
g_assert_cmpint (source->foo, ==, 69);
g_object_unref (target);
g_object_unref (source);
g_assert (binding == NULL);
}
static void
binding_transform (void)
{
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
GBinding *binding G_GNUC_UNUSED;
gboolean unused_data = FALSE;
binding = g_object_bind_property_full (source, "value",
target, "value",
G_BINDING_BIDIRECTIONAL,
celsius_to_fahrenheit,
fahrenheit_to_celsius,
&unused_data, data_free);
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));
g_object_unref (source);
g_object_unref (target);
g_assert (unused_data);
}
static void
binding_transform_closure (void)
{
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
GBinding *binding G_GNUC_UNUSED;
gboolean unused_data_1 = FALSE, unused_data_2 = FALSE;
GClosure *c2f_clos, *f2c_clos;
c2f_clos = g_cclosure_new (G_CALLBACK (celsius_to_fahrenheit), &unused_data_1, (GClosureNotify) data_free);
f2c_clos = g_cclosure_new (G_CALLBACK (fahrenheit_to_celsius), &unused_data_2, (GClosureNotify) data_free);
binding = g_object_bind_property_with_closures (source, "value",
target, "value",
G_BINDING_BIDIRECTIONAL,
c2f_clos,
f2c_clos);
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));
g_object_unref (source);
g_object_unref (target);
g_assert (unused_data_1);
g_assert (unused_data_2);
}
static void
binding_chain (void)
{
BindingSource *a = g_object_new (binding_source_get_type (), NULL);
BindingSource *b = g_object_new (binding_source_get_type (), NULL);
BindingSource *c = g_object_new (binding_source_get_type (), NULL);
GBinding *binding_1, *binding_2;
g_test_bug ("621782");
/* A -> B, B -> C */
binding_1 = g_object_bind_property (a, "foo", b, "foo", G_BINDING_BIDIRECTIONAL);
g_object_add_weak_pointer (G_OBJECT (binding_1), (gpointer *) &binding_1);
binding_2 = g_object_bind_property (b, "foo", c, "foo", G_BINDING_BIDIRECTIONAL);
g_object_add_weak_pointer (G_OBJECT (binding_2), (gpointer *) &binding_2);
/* verify the chain */
g_object_set (a, "foo", 42, NULL);
g_assert_cmpint (a->foo, ==, b->foo);
g_assert_cmpint (b->foo, ==, c->foo);
/* unbind A -> B and B -> C */
g_object_unref (binding_1);
g_assert (binding_1 == NULL);
g_object_unref (binding_2);
g_assert (binding_2 == NULL);
/* bind A -> C directly */
binding_2 = g_object_bind_property (a, "foo", c, "foo", G_BINDING_BIDIRECTIONAL);
/* verify the chain is broken */
g_object_set (a, "foo", 47, NULL);
g_assert_cmpint (a->foo, !=, b->foo);
g_assert_cmpint (a->foo, ==, c->foo);
g_object_unref (a);
g_object_unref (b);
g_object_unref (c);
}
static void
binding_sync_create (void)
{
BindingSource *source = g_object_new (binding_source_get_type (),
"foo", 42,
NULL);
BindingTarget *target = g_object_new (binding_target_get_type (),
"bar", 47,
NULL);
GBinding *binding;
binding = g_object_bind_property (source, "foo",
target, "bar",
G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
g_assert_cmpint (source->foo, ==, 42);
g_assert_cmpint (target->bar, ==, 42);
g_object_set (source, "foo", 47, NULL);
g_assert_cmpint (source->foo, ==, target->bar);
g_object_unref (binding);
g_object_set (target, "bar", 49, NULL);
binding = g_object_bind_property (source, "foo",
target, "bar",
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
g_assert_cmpint (source->foo, ==, 47);
g_assert_cmpint (target->bar, ==, 47);
g_object_unref (source);
g_object_unref (target);
}
static void
binding_invert_boolean (void)
{
BindingSource *source = g_object_new (binding_source_get_type (),
"toggle", TRUE,
NULL);
BindingTarget *target = g_object_new (binding_target_get_type (),
"toggle", FALSE,
NULL);
GBinding *binding;
binding = g_object_bind_property (source, "toggle",
target, "toggle",
G_BINDING_BIDIRECTIONAL | G_BINDING_INVERT_BOOLEAN);
g_assert (source->toggle);
g_assert (!target->toggle);
g_object_set (source, "toggle", FALSE, NULL);
g_assert (!source->toggle);
g_assert (target->toggle);
g_object_set (target, "toggle", FALSE, NULL);
g_assert (source->toggle);
g_assert (!target->toggle);
g_object_unref (binding);
g_object_unref (source);
g_object_unref (target);
}
static void
binding_same_object (void)
{
BindingSource *source = g_object_new (binding_source_get_type (),
"foo", 100,
"bar", 50,
NULL);
GBinding *binding;
binding = g_object_bind_property (source, "foo",
source, "bar",
G_BINDING_BIDIRECTIONAL);
g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);
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);
g_object_unref (source);
g_assert (binding == NULL);
}
static void
binding_unbind (void)
{
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
GBinding *binding;
binding = g_object_bind_property (source, "foo",
target, "bar",
G_BINDING_DEFAULT);
g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);
g_object_set (source, "foo", 42, NULL);
g_assert_cmpint (source->foo, ==, target->bar);
g_object_set (target, "bar", 47, NULL);
g_assert_cmpint (source->foo, !=, target->bar);
g_binding_unbind (binding);
g_assert (binding == NULL);
g_object_set (source, "foo", 0, NULL);
g_assert_cmpint (source->foo, !=, target->bar);
g_object_unref (source);
g_object_unref (target);
/* g_binding_unbind() has a special case for this */
source = g_object_new (binding_source_get_type (), NULL);
binding = g_object_bind_property (source, "foo",
source, "bar",
G_BINDING_DEFAULT);
g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);
g_binding_unbind (binding);
g_assert (binding == NULL);
g_object_unref (source);
}
static void
binding_fail (void)
{
BindingSource *source = g_object_new (binding_source_get_type (), NULL);
BindingTarget *target = g_object_new (binding_target_get_type (), NULL);
GBinding *binding;
/* double -> boolean is not supported */
binding = g_object_bind_property (source, "value",
target, "toggle",
G_BINDING_DEFAULT);
g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);
g_test_expect_message ("GLib-GObject", G_LOG_LEVEL_WARNING,
"*Unable to convert*double*boolean*");
g_object_set (source, "value", 1.0, NULL);
g_test_assert_expected_messages ();
g_object_unref (source);
g_object_unref (target);
g_assert (binding == NULL);
}
int
main (int argc, char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_bug_base ("http://bugzilla.gnome.org/");
g_test_add_func ("/binding/default", binding_default);
g_test_add_func ("/binding/bidirectional", binding_bidirectional);
g_test_add_func ("/binding/transform", binding_transform);
g_test_add_func ("/binding/transform-default", binding_transform_default);
g_test_add_func ("/binding/transform-closure", binding_transform_closure);
g_test_add_func ("/binding/chain", binding_chain);
g_test_add_func ("/binding/sync-create", binding_sync_create);
g_test_add_func ("/binding/invert-boolean", binding_invert_boolean);
g_test_add_func ("/binding/same-object", binding_same_object);
g_test_add_func ("/binding/unbind", binding_unbind);
g_test_add_func ("/binding/fail", binding_fail);
return g_test_run ();
}