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437 lines
14 KiB
C
437 lines
14 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 2001 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "TestObject"
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#include <glib-object.h>
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/* --- TestIface --- */
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#define TEST_TYPE_IFACE (test_iface_get_type ())
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#define TEST_IFACE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TEST_TYPE_IFACE, TestIface))
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#define TEST_IS_IFACE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TEST_TYPE_IFACE))
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#define TEST_IFACE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE, TestIfaceClass))
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typedef struct _TestIface TestIface;
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typedef struct _TestIfaceClass TestIfaceClass;
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struct _TestIfaceClass
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{
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GTypeInterface base_iface;
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void (*print_string) (TestIface *tiobj,
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const gchar *string);
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};
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static void iface_base_init (TestIfaceClass *iface);
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static void iface_base_finalize (TestIfaceClass *iface);
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static void print_foo (TestIface *tiobj,
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const gchar *string);
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static GType
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test_iface_get_type (void)
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{
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static GType test_iface_type = 0;
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if (!test_iface_type)
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{
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const GTypeInfo test_iface_info =
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{
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sizeof (TestIfaceClass),
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(GBaseInitFunc) iface_base_init, /* base_init */
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(GBaseFinalizeFunc) iface_base_finalize, /* base_finalize */
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};
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test_iface_type = g_type_register_static (G_TYPE_INTERFACE, "TestIface", &test_iface_info, 0);
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g_type_interface_add_prerequisite (test_iface_type, G_TYPE_OBJECT);
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}
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return test_iface_type;
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}
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static guint iface_base_init_count = 0;
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static void
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iface_base_init (TestIfaceClass *iface)
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{
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iface_base_init_count++;
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if (iface_base_init_count == 1)
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{
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/* add signals here */
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}
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}
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static void
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iface_base_finalize (TestIfaceClass *iface)
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{
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iface_base_init_count--;
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if (iface_base_init_count == 0)
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{
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/* destroy signals here */
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}
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}
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static void
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print_foo (TestIface *tiobj,
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const gchar *string)
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{
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if (!string)
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string = "<NULL>";
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g_print ("Iface-FOO: \"%s\" from %p\n", string, tiobj);
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}
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static void
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test_object_test_iface_init (gpointer giface,
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gpointer iface_data)
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{
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TestIfaceClass *iface = giface;
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g_assert (iface_data == GUINT_TO_POINTER (42));
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g_assert (G_TYPE_FROM_INTERFACE (iface) == TEST_TYPE_IFACE);
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/* assert iface_base_init() was already called */
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g_assert (iface_base_init_count > 0);
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/* initialize stuff */
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iface->print_string = print_foo;
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}
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static void
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iface_print_string (TestIface *tiobj,
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const gchar *string)
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{
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TestIfaceClass *iface;
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g_return_if_fail (TEST_IS_IFACE (tiobj));
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g_return_if_fail (G_IS_OBJECT (tiobj)); /* ensured through prerequisite */
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iface = TEST_IFACE_GET_CLASS (tiobj);
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g_object_ref (tiobj);
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iface->print_string (tiobj, string);
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g_object_unref (tiobj);
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}
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/* --- TestObject --- */
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#define TEST_TYPE_OBJECT (test_object_get_type ())
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#define TEST_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), TEST_TYPE_OBJECT, TestObject))
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#define TEST_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TEST_TYPE_OBJECT, TestObjectClass))
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#define TEST_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), TEST_TYPE_OBJECT))
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#define TEST_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TEST_TYPE_OBJECT))
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#define TEST_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TEST_TYPE_OBJECT, TestObjectClass))
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#define TEST_OBJECT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), TEST_TYPE_OBJECT, TestObjectPrivate))
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typedef struct _TestObject TestObject;
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typedef struct _TestObjectClass TestObjectClass;
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typedef struct _TestObjectPrivate TestObjectPrivate;
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struct _TestObject
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{
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GObject parent_instance;
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};
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struct _TestObjectClass
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{
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GObjectClass parent_class;
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gchar* (*test_signal) (TestObject *tobject,
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TestIface *iface_object,
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gpointer tdata);
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};
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struct _TestObjectPrivate
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{
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int dummy1;
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gdouble dummy2;
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};
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static void test_object_class_init (TestObjectClass *class);
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static void test_object_init (TestObject *tobject);
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static gboolean test_signal_accumulator (GSignalInvocationHint *ihint,
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GValue *return_accu,
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const GValue *handler_return,
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gpointer data);
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static gchar* test_object_test_signal (TestObject *tobject,
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TestIface *iface_object,
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gpointer tdata);
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static gint TestObject_private_offset;
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static inline gpointer
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test_object_get_instance_private (TestObject *self)
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{
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return (G_STRUCT_MEMBER_P (self, TestObject_private_offset));
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}
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static GType
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test_object_get_type (void)
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{
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static GType test_object_type = 0;
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if (!test_object_type)
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{
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const GTypeInfo test_object_info =
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{
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sizeof (TestObjectClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) test_object_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (TestObject),
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5, /* n_preallocs */
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(GInstanceInitFunc) test_object_init,
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};
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GInterfaceInfo iface_info = { test_object_test_iface_init, NULL, GUINT_TO_POINTER (42) };
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test_object_type = g_type_register_static (G_TYPE_OBJECT, "TestObject", &test_object_info, 0);
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g_type_add_interface_static (test_object_type, TEST_TYPE_IFACE, &iface_info);
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TestObject_private_offset =
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g_type_add_instance_private (test_object_type, sizeof (TestObjectPrivate));
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}
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return test_object_type;
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}
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static void
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test_object_class_init (TestObjectClass *class)
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{
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/* GObjectClass *gobject_class = G_OBJECT_CLASS (class); */
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g_type_class_adjust_private_offset (class, &TestObject_private_offset);
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class->test_signal = test_object_test_signal;
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g_signal_new ("test-signal",
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G_OBJECT_CLASS_TYPE (class),
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G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST | G_SIGNAL_RUN_CLEANUP,
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G_STRUCT_OFFSET (TestObjectClass, test_signal),
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test_signal_accumulator, NULL,
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g_cclosure_marshal_STRING__OBJECT_POINTER,
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G_TYPE_STRING, 2, TEST_TYPE_IFACE, G_TYPE_POINTER);
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}
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static void
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test_object_init (TestObject *tobject)
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{
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TestObjectPrivate *priv = test_object_get_instance_private (tobject);
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g_assert (priv);
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priv->dummy1 = 54321;
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}
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/* Check to see if private data initialization in the
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* instance init function works.
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*/
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static void
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test_object_check_private_init (TestObject *tobject)
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{
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TestObjectPrivate *priv = test_object_get_instance_private (tobject);
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g_print ("private data during initialization: %u == %u\n", priv->dummy1, 54321);
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g_assert (priv->dummy1 == 54321);
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}
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static gboolean
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test_signal_accumulator (GSignalInvocationHint *ihint,
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GValue *return_accu,
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const GValue *handler_return,
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gpointer data)
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{
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const gchar *accu_string = g_value_get_string (return_accu);
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const gchar *new_string = g_value_get_string (handler_return);
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gchar *result_string;
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if (accu_string)
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result_string = g_strconcat (accu_string, new_string, NULL);
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else if (new_string)
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result_string = g_strdup (new_string);
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else
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result_string = NULL;
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g_value_take_string (return_accu, result_string);
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return TRUE;
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}
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static gchar*
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test_object_test_signal (TestObject *tobject,
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TestIface *iface_object,
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gpointer tdata)
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{
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g_message ("::test_signal default_handler called");
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g_return_val_if_fail (TEST_IS_IFACE (iface_object), NULL);
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return g_strdup ("<default_handler>");
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}
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/* --- TestIface for DerivedObject --- */
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static void
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print_bar (TestIface *tiobj,
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const gchar *string)
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{
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TestIfaceClass *parent_iface;
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g_return_if_fail (TEST_IS_IFACE (tiobj));
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if (!string)
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string = "<NULL>";
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g_print ("Iface-BAR: \"%s\" from %p\n", string, tiobj);
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g_print ("chaining: ");
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parent_iface = g_type_interface_peek_parent (TEST_IFACE_GET_CLASS (tiobj));
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parent_iface->print_string (tiobj, string);
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g_assert (g_type_interface_peek_parent (parent_iface) == NULL);
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}
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static void
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derived_object_test_iface_init (gpointer giface,
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gpointer iface_data)
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{
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TestIfaceClass *iface = giface;
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g_assert (iface_data == GUINT_TO_POINTER (87));
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g_assert (G_TYPE_FROM_INTERFACE (iface) == TEST_TYPE_IFACE);
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/* assert test_object_test_iface_init() was already called */
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g_assert (iface->print_string == print_foo);
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/* override stuff */
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iface->print_string = print_bar;
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}
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/* --- DerivedObject --- */
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#define DERIVED_TYPE_OBJECT (derived_object_get_type ())
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#define DERIVED_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), DERIVED_TYPE_OBJECT, DerivedObject))
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#define DERIVED_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), DERIVED_TYPE_OBJECT, DerivedObjectClass))
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#define DERIVED_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), DERIVED_TYPE_OBJECT))
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#define DERIVED_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), DERIVED_TYPE_OBJECT))
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#define DERIVED_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), DERIVED_TYPE_OBJECT, DerivedObjectClass))
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#define DERIVED_OBJECT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DERIVED_TYPE_OBJECT, DerivedObjectPrivate))
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typedef struct _DerivedObject DerivedObject;
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typedef struct _TestObjectClass DerivedObjectClass;
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typedef struct _DerivedObjectPrivate DerivedObjectPrivate;
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struct _DerivedObject
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{
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TestObject parent_instance;
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int dummy1;
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int dummy2;
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};
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struct _DerivedObjectPrivate
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{
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char dummy;
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};
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static void derived_object_class_init (DerivedObjectClass *class);
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static void derived_object_init (DerivedObject *dobject);
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static gint DerivedObject_private_offset;
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static inline gpointer
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derived_object_get_instance_private (DerivedObject *self)
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{
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return (G_STRUCT_MEMBER_P (self, DerivedObject_private_offset));
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}
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static GType
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derived_object_get_type (void)
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{
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static GType derived_object_type = 0;
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if (!derived_object_type)
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{
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const GTypeInfo derived_object_info =
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{
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sizeof (DerivedObjectClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) derived_object_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (DerivedObject),
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5, /* n_preallocs */
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(GInstanceInitFunc) derived_object_init,
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};
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GInterfaceInfo iface_info = { derived_object_test_iface_init, NULL, GUINT_TO_POINTER (87) };
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derived_object_type = g_type_register_static (TEST_TYPE_OBJECT, "DerivedObject", &derived_object_info, 0);
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g_type_add_interface_static (derived_object_type, TEST_TYPE_IFACE, &iface_info);
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DerivedObject_private_offset =
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g_type_add_instance_private (derived_object_type, sizeof (DerivedObjectPrivate));
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}
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return derived_object_type;
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}
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static void
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derived_object_class_init (DerivedObjectClass *class)
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{
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g_type_class_adjust_private_offset (class, &DerivedObject_private_offset);
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}
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static void
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derived_object_init (DerivedObject *dobject)
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{
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TestObjectPrivate *test_priv;
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DerivedObjectPrivate *derived_priv;
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derived_priv = derived_object_get_instance_private (dobject);
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g_assert (derived_priv);
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test_priv = test_object_get_instance_private (TEST_OBJECT (dobject));
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g_assert (test_priv);
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}
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/* --- main --- */
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int
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main (int argc,
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char *argv[])
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{
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GTypeInfo info = { 0, };
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GTypeFundamentalInfo finfo = { 0, };
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GType type;
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TestObject *sigarg;
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DerivedObject *dobject;
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TestObjectPrivate *priv;
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gchar *string = NULL;
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g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) |
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G_LOG_LEVEL_WARNING |
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G_LOG_LEVEL_CRITICAL);
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/* test new fundamentals */
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g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST) == g_type_fundamental_next ());
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type = g_type_register_fundamental (g_type_fundamental_next (), "FooShadow1", &info, &finfo, 0);
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g_assert (type == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST));
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g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1) == g_type_fundamental_next ());
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type = g_type_register_fundamental (g_type_fundamental_next (), "FooShadow2", &info, &finfo, 0);
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g_assert (type == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1));
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g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 2) == g_type_fundamental_next ());
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g_assert (g_type_from_name ("FooShadow1") == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST));
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g_assert (g_type_from_name ("FooShadow2") == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1));
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/* to test past class initialization interface setups, create the class here */
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g_type_class_ref (TEST_TYPE_OBJECT);
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dobject = g_object_new (DERIVED_TYPE_OBJECT, NULL);
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test_object_check_private_init (TEST_OBJECT (dobject));
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sigarg = g_object_new (TEST_TYPE_OBJECT, NULL);
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g_print ("MAIN: emit test-signal:\n");
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g_signal_emit_by_name (dobject, "test-signal", sigarg, NULL, &string);
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g_message ("signal return: \"%s\"", string);
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g_assert_cmpstr (string, ==, "<default_handler><default_handler><default_handler>");
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g_free (string);
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g_print ("MAIN: call iface print-string on test and derived object:\n");
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iface_print_string (TEST_IFACE (sigarg), "iface-string-from-test-type");
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iface_print_string (TEST_IFACE (dobject), "iface-string-from-derived-type");
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priv = test_object_get_instance_private (TEST_OBJECT (dobject));
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g_print ("private data after initialization: %u == %u\n", priv->dummy1, 54321);
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g_assert (priv->dummy1 == 54321);
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g_object_unref (sigarg);
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g_object_unref (dobject);
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g_message ("%s done", argv[0]);
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return 0;
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}
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