/* GObject - GLib Type, Object, Parameter and Signal Library * Copyright (C) 2001, 2003 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General * Public License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. */ #undef G_LOG_DOMAIN #define G_LOG_DOMAIN "TestAccumulator" #undef G_DISABLE_ASSERT #undef G_DISABLE_CHECKS #undef G_DISABLE_CAST_CHECKS #include #include #include "testmarshal.h" #include "testcommon.h" /* What this test tests is the behavior of signal accumulators * Two accumulators are tested: * * 1: A custom accumulator that appends the returned strings * 2: The standard g_signal_accumulator_true_handled that stops * emission on TRUE returns. */ /* * TestObject, a parent class for TestObject */ #define TEST_TYPE_OBJECT (test_object_get_type ()) typedef struct _TestObject TestObject; typedef struct _TestObjectClass TestObjectClass; struct _TestObject { GObject parent_instance; }; struct _TestObjectClass { GObjectClass parent_class; gchar* (*test_signal1) (TestObject *tobject, gint param); gboolean (*test_signal2) (TestObject *tobject, gint param); GVariant* (*test_signal3) (TestObject *tobject, gboolean *weak_ptr); }; static GType test_object_get_type (void); static gboolean test_signal1_accumulator (GSignalInvocationHint *ihint, GValue *return_accu, const GValue *handler_return, gpointer data) { const gchar *accu_string = g_value_get_string (return_accu); const gchar *new_string = g_value_get_string (handler_return); gchar *result_string; if (accu_string) result_string = g_strconcat (accu_string, new_string, NULL); else if (new_string) result_string = g_strdup (new_string); else result_string = NULL; g_value_set_string_take_ownership (return_accu, result_string); return TRUE; } gchar* test_object_signal1_callback_before (TestObject *tobject, gint param, gpointer data) { return g_strdup (""); } gchar* test_object_real_signal1 (TestObject *tobject, gint param) { return g_strdup (""); } gchar* test_object_signal1_callback_after (TestObject *tobject, gint param, gpointer data) { return g_strdup (""); } gboolean test_object_signal2_callback_before (TestObject *tobject, gint param) { switch (param) { case 1: return TRUE; case 2: return FALSE; case 3: return FALSE; case 4: return FALSE; } g_assert_not_reached (); return FALSE; } gboolean test_object_real_signal2 (TestObject *tobject, gint param) { switch (param) { case 1: g_assert_not_reached (); return FALSE; case 2: return TRUE; case 3: return FALSE; case 4: return FALSE; } g_assert_not_reached (); return FALSE; } gboolean test_object_signal2_callback_after (TestObject *tobject, gint param) { switch (param) { case 1: g_assert_not_reached (); return FALSE; case 2: g_assert_not_reached (); return FALSE; case 3: return TRUE; case 4: return FALSE; } g_assert_not_reached (); return FALSE; } static gboolean test_signal3_accumulator (GSignalInvocationHint *ihint, GValue *return_accu, const GValue *handler_return, gpointer data) { GVariant *variant; variant = g_value_get_variant (handler_return); g_assert (!g_variant_is_floating (variant)); g_value_set_variant (return_accu, variant); return variant == NULL; } /* To be notified when the variant is finalised, we construct * it from data with a custom GDestroyNotify. */ typedef struct { char *mem; gsize n; gboolean *weak_ptr; } VariantData; static void free_data (VariantData *data) { *(data->weak_ptr) = TRUE; g_free (data->mem); g_slice_free (VariantData, data); } static GVariant * test_object_real_signal3 (TestObject *tobject, gboolean *weak_ptr) { GVariant *variant; VariantData *data; variant = g_variant_ref_sink (g_variant_new_uint32 (42)); data = g_slice_new (VariantData); data->weak_ptr = weak_ptr; data->n = g_variant_get_size (variant); data->mem = g_malloc (data->n); g_variant_store (variant, data->mem); g_variant_unref (variant); variant = g_variant_new_from_data (G_VARIANT_TYPE ("u"), data->mem, data->n, TRUE, (GDestroyNotify) free_data, data); return g_variant_ref_sink (variant); } static void test_object_class_init (TestObjectClass *class) { class->test_signal1 = test_object_real_signal1; class->test_signal2 = test_object_real_signal2; class->test_signal3 = test_object_real_signal3; g_signal_new ("test-signal1", G_OBJECT_CLASS_TYPE (class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (TestObjectClass, test_signal1), test_signal1_accumulator, NULL, test_marshal_STRING__INT, G_TYPE_STRING, 1, G_TYPE_INT); g_signal_new ("test-signal2", G_OBJECT_CLASS_TYPE (class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (TestObjectClass, test_signal2), g_signal_accumulator_true_handled, NULL, test_marshal_BOOLEAN__INT, G_TYPE_BOOLEAN, 1, G_TYPE_INT); g_signal_new ("test-signal3", G_OBJECT_CLASS_TYPE (class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (TestObjectClass, test_signal3), test_signal3_accumulator, NULL, test_marshal_VARIANT__POINTER, G_TYPE_VARIANT, 1, G_TYPE_POINTER); } static DEFINE_TYPE(TestObject, test_object, test_object_class_init, NULL, NULL, G_TYPE_OBJECT) int main (int argc, char *argv[]) { TestObject *object; gchar *string_result; gboolean bool_result; gboolean variant_finalised; GVariant *variant_result; g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL); object = g_object_new (TEST_TYPE_OBJECT, NULL); g_signal_connect (object, "test-signal1", G_CALLBACK (test_object_signal1_callback_before), NULL); g_signal_connect_after (object, "test-signal1", G_CALLBACK (test_object_signal1_callback_after), NULL); g_signal_emit_by_name (object, "test-signal1", 0, &string_result); g_assert (strcmp (string_result, "") == 0); g_free (string_result); g_signal_connect (object, "test-signal2", G_CALLBACK (test_object_signal2_callback_before), NULL); g_signal_connect_after (object, "test-signal2", G_CALLBACK (test_object_signal2_callback_after), NULL); bool_result = FALSE; g_signal_emit_by_name (object, "test-signal2", 1, &bool_result); g_assert (bool_result == TRUE); bool_result = FALSE; g_signal_emit_by_name (object, "test-signal2", 2, &bool_result); g_assert (bool_result == TRUE); bool_result = FALSE; g_signal_emit_by_name (object, "test-signal2", 3, &bool_result); g_assert (bool_result == TRUE); bool_result = TRUE; g_signal_emit_by_name (object, "test-signal2", 4, &bool_result); g_assert (bool_result == FALSE); variant_finalised = FALSE; variant_result = NULL; g_signal_emit_by_name (object, "test-signal3", &variant_finalised, &variant_result); g_assert (variant_result != NULL); g_assert (!g_variant_is_floating (variant_result)); /* Test that variant_result had refcount 1 */ g_assert (!variant_finalised); g_variant_unref (variant_result); g_assert (variant_finalised); return 0; }