SeedValue
seed_gtk_builder_connect_signals(SeedContext ctx,
SeedObject function,
SeedObject this_object,
gsize argument_count,
const SeedValue arguments[],
SeedException *exception)
{
builder_ud ud;
GtkBuilder *b;
CHECK_ARG_COUNT("GtkBuilder.connect_signals", 1);
if (!seed_value_is_object (ctx, arguments[0]))
{
seed_make_exception (ctx, exception, "TypeError",
"connect_signals expects one object as the first argument");
return seed_make_undefined (ctx);
}
b = GTK_BUILDER (seed_value_to_object (ctx, this_object, exception));
ud.ctx = ctx;
ud.obj = arguments[0];
if (argument_count == 2)
ud.user_data = arguments[1];
else
ud.user_data = NULL;
gtk_builder_connect_signals_full(b, seed_builder_connect_func, &ud);
return seed_make_undefined (ctx);
}
static gboolean
seed_ffi_set_signature (SeedContext ctx,
SeedObject this_object,
SeedString property_name,
SeedValue value,
SeedException *exception)
{
seed_ffi_function_priv *priv = seed_object_get_private (this_object);
if (priv->signature_obj)
{
seed_make_exception (ctx, exception, "FFIError",
"Can not reset signature of function once set");
return FALSE;
}
else if (!seed_value_is_object (ctx, value))
{
seed_make_exception (ctx, exception, "FFIError",
"Signature must be an object");
return FALSE;
}
else
{
if (!seed_ffi_build_signature (ctx, priv, (SeedObject) value, exception))
return FALSE;
}
return TRUE;
}
static void
seed_builder_connect_func (GtkBuilder *builder,
GObject *object,
const gchar *signal_name,
const gchar *handler_name,
GObject *connect_object,
GConnectFlags flags,
gpointer user_data)
{
SeedContext ctx;
SeedObject obj, func;
builder_ud *priv = (builder_ud *)user_data;
GClosure *closure;
ctx = priv->ctx;
obj = priv->obj;
func = seed_object_get_property (ctx, obj, handler_name);
if (!seed_value_is_object (ctx, func) || !seed_value_is_function (ctx, func))
return;
closure = seed_closure_new (ctx, func, priv->user_data,
"signal handler (GtkBuilder)");
if (connect_object != NULL)
g_object_watch_closure (connect_object, closure);
g_signal_connect_closure (object, signal_name, closure, FALSE);
}
static gboolean
seed_cairo_surface_set_fallback_resolution(SeedContext ctx,
SeedObject this_object,
SeedString property_name,
SeedValue value,
SeedException *exception)
{
cairo_surface_t *surf;
gdouble x, y;
SeedValue jsx, jsy;
CHECK_THIS_BOOL();
if (!seed_value_is_object (ctx, value))
{
seed_make_exception(ctx, exception, "ArgumentError", "Cairo.Surface.fallback_resolution must be an array [x,y]");
return FALSE;
}
jsx = seed_object_get_property_at_index (ctx, (SeedObject) value, 0, exception);
jsy = seed_object_get_property_at_index (ctx, (SeedObject) value, 1, exception);
surf = seed_object_to_cairo_surface (ctx, this_object, exception);
x = seed_value_to_double (ctx, jsx, exception);
y = seed_value_to_double (ctx, jsy, exception);
cairo_surface_set_fallback_resolution (surf, x, y);
return TRUE;
}
static SeedObject
find_js_property_by_path(SeedContext ctx,
SeedObject root_obj,
const gchar *path)
{
gchar **elements;
gint i;
SeedObject obj;
elements = g_strsplit(path, "/", -1);
obj = root_obj;
/* g_strsplit returns empty string for the first
* '/' so we start with elements[1]
*/
for (i = 1; elements[i] != NULL; ++i)
{
obj = seed_object_get_property(ctx, obj, elements[i]);
if (seed_value_is_undefined (ctx, obj) ||
!seed_value_is_object (ctx, obj))
{
obj = NULL;
break;
}
}
g_strfreev(elements);
return obj;
}
static DBusMessage *
build_reply_from_jsval(SeedContext ctx,
const char *signature,
const char *sender,
dbus_uint32_t serial,
SeedValue rval,
SeedException *exception)
{
DBusMessage *reply;
DBusMessageIter arg_iter;
DBusSignatureIter sig_iter;
gboolean marshalled = FALSE;
reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
dbus_message_set_destination(reply, sender);
dbus_message_set_reply_serial(reply, serial);
dbus_message_set_no_reply(reply, TRUE);
dbus_message_iter_init_append(reply, &arg_iter);
if (seed_value_is_undefined (ctx, rval) || g_str_equal(signature, ""))
{
/* We don't want to send anything in these cases so skip the
* marshalling altogether.
*/
return reply;
}
dbus_signature_iter_init(&sig_iter, signature);
if (signature_has_one_element(signature))
{
marshalled = seed_js_one_value_to_dbus(ctx, rval, &arg_iter, &sig_iter, exception);
}
else
{
if (!seed_value_is_object (ctx, rval))
{
g_warning("Signature has multiple items but return value is not an array");
return reply;
}
marshalled = seed_js_values_to_dbus(ctx, 0, rval, &arg_iter, &sig_iter, exception);
}
if (!marshalled) {
/* replace our planned reply with an error */
dbus_message_unref(reply);
if (!dbus_reply_from_exception_and_sender(ctx, sender, serial, &reply, exception))
g_warning ("conversion of dbus return value failed but no exception was set?");
}
return reply;
}
static gboolean
find_method(SeedContext ctx,
SeedObject obj,
const gchar *method_name,
SeedValue *method_value)
{
*method_value = seed_object_get_property (ctx, obj, method_name);
if (seed_value_is_undefined (ctx, *method_value) ||
!seed_value_is_object (ctx, *method_value))
return FALSE;
return TRUE;
}
static gboolean
dbus_reply_from_exception_and_sender(SeedContext ctx,
const gchar *sender,
dbus_uint32_t serial,
DBusMessage **reply_p,
SeedException *exception)
{
SeedValue name_val;
gchar *s;
const gchar *name = NULL;
*reply_p = NULL;
if (seed_value_is_undefined (ctx, *exception) ||
seed_value_is_null (ctx, *exception) ||
!seed_value_is_object (ctx, *exception))
return FALSE;
name_val = seed_object_get_property(ctx, *exception, "dbusErrorName");
name = seed_value_to_string (ctx, name_val, NULL);
s = seed_exception_to_string (ctx, *exception);
g_warning("JS exception we will send as dbus reply to %s: %s",
sender,
s);
*reply_p = dbus_message_new(DBUS_MESSAGE_TYPE_ERROR);
dbus_message_set_destination(*reply_p, sender);
dbus_message_set_reply_serial(*reply_p, serial);
dbus_message_set_no_reply(*reply_p, TRUE);
dbus_message_set_error_name(*reply_p, name ? name : DBUS_ERROR_FAILED);
if (s != NULL) {
DBusMessageIter iter;
dbus_message_iter_init_append(*reply_p, &iter);
if (!dbus_message_iter_append_basic(&iter,
DBUS_TYPE_STRING,
&s)) {
dbus_message_unref(*reply_p);
g_free(s);
return FALSE;
}
g_free(s);
}
return TRUE;
}
static gboolean
peas_plugin_loader_seed_provides_extension (PeasPluginLoader *loader,
PeasPluginInfo *info,
GType exten_type)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
SeedInfo *sinfo;
SeedValue extension;
sinfo = (SeedInfo *) g_hash_table_lookup (sloader->loaded_plugins, info);
extension = seed_object_get_property (sinfo->context,
sinfo->extensions,
g_type_name (exten_type));
return extension && seed_value_is_object (sinfo->context, extension);
}
static gboolean
peas_plugin_loader_seed_load (PeasPluginLoader *loader,
PeasPluginInfo *info)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
SeedContext context;
gchar *script;
SeedException exc = NULL;
SeedObject global, extensions;
SeedInfo *sinfo;
context = seed_context_create (seed->group, NULL);
seed_prepare_global_context (context);
script = get_script_for_plugin_info (info, context);
seed_simple_evaluate (context, script, &exc);
g_free (script);
if (exc)
{
gchar *exc_string = seed_exception_to_string (context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
seed_context_unref (context);
return FALSE;
}
global = seed_context_get_global_object (context);
extensions = seed_object_get_property (context, global, "extensions");
if (seed_value_is_object (context, extensions))
{
sinfo = (SeedInfo *) g_slice_new (SeedInfo);
sinfo->context = context;
sinfo->extensions = extensions;
seed_context_ref (context);
seed_value_protect (context, extensions);
g_hash_table_insert (sloader->loaded_plugins, info, sinfo);
}
seed_context_unref (context);
return TRUE;
}
gboolean
seed_value_to_cairo_matrix (SeedContext ctx,
SeedValue value,
cairo_matrix_t *matrix,
SeedException *exception)
{
if (!seed_value_is_object (ctx, value))
return FALSE;
matrix->xx = seed_value_to_double (ctx, seed_object_get_property_at_index (ctx, (SeedObject) value, 0, exception), exception);
matrix->yx = seed_value_to_double (ctx, seed_object_get_property_at_index (ctx, (SeedObject) value, 1, exception), exception);
matrix->xy = seed_value_to_double (ctx, seed_object_get_property_at_index (ctx, (SeedObject) value, 2, exception), exception);
matrix->yy = seed_value_to_double (ctx, seed_object_get_property_at_index (ctx, (SeedObject) value, 3, exception), exception);
matrix->x0 = seed_value_to_double (ctx, seed_object_get_property_at_index (ctx, (SeedObject) value, 4, exception), exception);
matrix->y0 = seed_value_to_double (ctx, seed_object_get_property_at_index (ctx, (SeedObject) value, 5, exception), exception);
return TRUE;
}
static gboolean
seed_ffi_build_signature (SeedContext ctx,
seed_ffi_function_priv *priv,
SeedObject sig,
SeedException *exception)
{
SeedObject arguments;
SeedValue ret_type_ref, length_ref;
guint length, i;
arguments = seed_object_get_property (ctx, sig, "arguments");
ret_type_ref = seed_object_get_property (ctx, sig, "returns");
if (!seed_value_is_object (ctx, arguments))
{
seed_make_exception (ctx, exception, "FFIError",
"Signature arguments member must be an array describing argument types");
return FALSE;
}
length_ref = seed_object_get_property (ctx, arguments, "length");
length = seed_value_to_uint (ctx, length_ref, exception);
priv->n_args = length;
priv->args = g_slice_alloc (length * sizeof (GType));
for (i = 0; i < length; i++)
{
SeedValue type = seed_object_get_property_at_index (ctx, arguments,
i, exception);
priv->args[i] = seed_value_to_int (ctx, type, exception);
}
priv->ret_val = seed_value_to_int (ctx, ret_type_ref, exception);
priv->signature_obj = sig;
seed_value_protect (ctx, sig);
return TRUE;
}
static gboolean
peas_plugin_loader_seed_load (PeasPluginLoader *loader,
PeasPluginInfo *info)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
gchar *filename;
gchar *content;
GError *error = NULL;
SeedContext context;
SeedScript *script;
SeedException exc = NULL;
SeedObject global, extensions;
SeedInfo *sinfo;
filename = get_script_filename_for_plugin_info (info);
g_debug ("Seed script filename is '%s'", filename);
if (!g_file_get_contents (filename, &content, NULL, &error))
{
g_warning ("Error: %s", error->message);
g_error_free (error);
g_free (filename);
return FALSE;
}
context = seed_context_create (seed->group, NULL);
seed_prepare_global_context (context);
script = seed_make_script (context, content, filename, 0);
seed_evaluate (context, script, NULL);
exc = seed_script_exception (script);
seed_script_destroy (script);
g_free (content);
g_free (filename);
if (exc)
{
gchar *exc_string = seed_exception_to_string (context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
seed_context_unref (context);
return FALSE;
}
global = seed_context_get_global_object (context);
extensions = seed_object_get_property (context, global, "extensions");
if (seed_value_is_object (context, extensions))
{
sinfo = (SeedInfo *) g_slice_new (SeedInfo);
sinfo->context = context;
sinfo->extensions = extensions;
seed_value_protect (context, extensions);
g_hash_table_insert (sloader->loaded_plugins, info, sinfo);
return TRUE;
}
else
{
g_warning ("extensions is not an object in plugin '%s'",
peas_plugin_info_get_module_name (info));
seed_context_unref (context);
return FALSE;
}
}
static PeasExtension *
peas_plugin_loader_seed_create_extension (PeasPluginLoader *loader,
PeasPluginInfo *info,
GType exten_type,
guint n_parameters,
GParameter *parameters)
{
PeasPluginLoaderSeed *sloader = PEAS_PLUGIN_LOADER_SEED (loader);
SeedInfo *sinfo;
SeedValue extension_ctor, extension;
guint i, j;
SeedValue value;
GValue gvalue = { 0 };
GArray *interfaces;
gchar **property_names;
sinfo = (SeedInfo *) g_hash_table_lookup (sloader->loaded_plugins, info);
/* FIXME: instantiate new object and pass the parameters */
extension_ctor = seed_object_get_property (sinfo->context,
sinfo->extensions,
g_type_name (exten_type));
if (!extension_ctor ||
seed_value_is_undefined (sinfo->context, extension_ctor) ||
seed_value_is_null (sinfo->context, extension_ctor))
return NULL;
if (!seed_value_is_object (sinfo->context, extension_ctor))
{
g_warning ("Extension '%s' in plugin '%s' is not a Seed object",
g_type_name (exten_type), peas_plugin_info_get_module_name (info));
return NULL;
}
/* Instantiate the ctor object into a new specific object. */
extension = JSObjectCallAsConstructor (sinfo->context, extension_ctor, 0, NULL, NULL);
if (extension == NULL)
{
#ifndef PEAS_DISABLE_DEPRECATED_FEATURES
gchar **property_names;
g_warning ("DEPRECATION WARNING: Extension '%s' in plugin '%s' is not a valid "
"constructor function. Support for extension initialization by array "
"copy will be dropped soon.",
g_type_name (exten_type), peas_plugin_info_get_module_name (info));
extension = seed_make_object (sinfo->context, NULL, NULL);
property_names = seed_object_copy_property_names (sinfo->context,
extension_ctor);
for (i = 0; property_names[i] != NULL; i++)
{
SeedValue value;
value = seed_object_get_property (sinfo->context,
extension_ctor,
property_names[i]);
seed_object_set_property (sinfo->context,
extension,
property_names[i],
value);
}
g_strfreev (property_names);
#else
g_warning ("Extension '%s' in plugin '%s' is not a valid constructor",
g_type_name (exten_type), peas_plugin_info_get_module_name (info));
return NULL;
#endif
}
/* Set the properties as well, cannot use
* g_object_set_property() because it may be construct-only
*/
for (i = 0; i < n_parameters; i++)
{
gchar *key;
/* We want to normalize the property names to have a '_' instead of the
* conventional '-', to make them accessible through this.property_name */
key = g_strdup (parameters[i].name);
for (j = 0; key[j] != '\0'; j++)
{
if (key[j] == '-')
key[j] = '_';
}
value = seed_value_from_gvalue (sinfo->context,
¶meters[i].value,
NULL);
seed_object_set_property (sinfo->context,
extension,
key,
value);
g_free (key);
}
/* Set the plugin info as an attribute of the instance */
g_value_init (&gvalue, PEAS_TYPE_PLUGIN_INFO);
g_value_set_boxed (&gvalue, info);
value = seed_value_from_gvalue (sinfo->context, &gvalue, NULL);
seed_object_set_property (sinfo->context, extension, "plugin_info", value);
g_value_unset (&gvalue);
/* Do not add exten_type as it will be added below */
interfaces = g_array_new (TRUE, FALSE, sizeof (GType));
property_names = seed_object_copy_property_names (sinfo->context,
sinfo->extensions);
for (i = 0; property_names[i] != NULL; ++i)
{
gchar *property_name = property_names[i];
SeedValue *prop_extension_ctor;
GType the_type;
prop_extension_ctor = seed_object_get_property (sinfo->context,
sinfo->extensions,
property_name);
if (prop_extension_ctor != extension_ctor)
continue;
if (!seed_value_is_object (sinfo->context, extension_ctor))
{
g_warning ("Extension '%s' in plugin '%s' is not a Seed object",
property_name, peas_plugin_info_get_module_name (info));
continue;
}
the_type = peas_gi_get_type_from_name (property_name);
if (the_type == G_TYPE_INVALID)
{
g_warning ("Could not find GType for '%s', "
"did you forget to import it?", property_name);
}
else
{
g_array_append_val (interfaces, the_type);
}
}
g_array_sort (interfaces, (GCompareFunc) prerequisites_sort);
g_strfreev (property_names);
return peas_extension_seed_new (exten_type,
(GType *) g_array_free (interfaces, FALSE),
sinfo->context, extension);
}
static gboolean
peas_extension_seed_call (PeasExtensionWrapper *exten,
const gchar *method_name,
GIArgument *args,
GIArgument *retval)
{
PeasExtensionSeed *sexten = PEAS_EXTENSION_SEED (exten);
GType exten_type;
SeedValue js_method;
GICallableInfo *func_info;
gint n_args, i;
SeedValue *js_in_args;
OutArg *out_args;
SeedValue js_ret, val;
SeedException exc = NULL;
gchar *exc_string;
gint n_in_args = 0;
gint n_out_args = 0;
GIArgument argument;
g_return_val_if_fail (sexten->js_context != NULL, FALSE);
g_return_val_if_fail (sexten->js_object != NULL, FALSE);
exten_type = peas_extension_wrapper_get_extension_type (exten);
/* Fetch the JS method we want to call */
js_method = seed_object_get_property (sexten->js_context,
sexten->js_object,
method_name);
if (seed_value_is_undefined (sexten->js_context, js_method))
{
g_warning ("Method '%s.%s' is not defined",
g_type_name (exten_type), method_name);
return FALSE;
}
/* We want to display an error if the method is defined but is not a function. */
if (!seed_value_is_function (sexten->js_context, js_method))
{
g_warning ("Method '%s.%s' is not a function",
g_type_name (exten_type), method_name);
return FALSE;
}
/* Prepare the arguments */
func_info = peas_gi_get_method_info (exten_type, method_name);
if (func_info == NULL)
return FALSE;
n_args = g_callable_info_get_n_args (func_info);
g_return_val_if_fail (n_args >= 0, FALSE);
js_in_args = g_newa (SeedValue, n_args);
out_args = g_newa (OutArg, n_args + 1);
/* We put the return value first in the out tuple, as it seems to be
* the common behaviour for GI-based bindings */
g_callable_info_load_return_type (func_info, &out_args[0].type_info);
if (g_type_info_get_tag (&out_args[0].type_info) != GI_TYPE_TAG_VOID)
out_args[n_out_args++].ptr = &retval->v_pointer;
/* Handle the other arguments */
for (i = 0; i < n_args && exc == NULL; i++)
{
GIArgInfo arg_info;
GIDirection direction;
g_callable_info_load_arg (func_info, i, &arg_info);
direction = g_arg_info_get_direction (&arg_info);
g_arg_info_load_type (&arg_info, &out_args[n_out_args].type_info);
if (direction == GI_DIRECTION_IN)
{
js_in_args[n_in_args++] = seed_value_from_gi_argument (sexten->js_context,
&args[i],
&out_args[n_out_args].type_info,
&exc);
}
if (direction == GI_DIRECTION_INOUT)
{
GIArgument arg;
peas_gi_pointer_to_argument (&out_args[n_out_args].type_info,
args[i].v_pointer, &arg);
js_in_args[n_in_args++] = seed_value_from_gi_argument (sexten->js_context,
&arg,
&out_args[n_out_args].type_info,
&exc);
}
if (direction == GI_DIRECTION_OUT || direction == GI_DIRECTION_INOUT)
out_args[n_out_args++].ptr = args[i].v_pointer;
}
if (exc != NULL)
goto cleanup;
js_ret = seed_object_call (sexten->js_context,
js_method,
sexten->js_object,
n_in_args,
js_in_args,
&exc);
if (exc != NULL)
goto cleanup;
if (n_out_args == 1)
{
if (seed_value_to_gi_argument (sexten->js_context, js_ret,
&out_args[0].type_info, &argument, &exc))
{
peas_gi_argument_to_pointer (&out_args[0].type_info,
&argument, out_args[0].ptr);
}
}
else if (n_out_args > 0 && seed_value_is_object (sexten->js_context, js_ret))
{
for (i = 0; i < n_out_args && exc == NULL; i++)
{
val = seed_object_get_property_at_index (sexten->js_context, js_ret,
i, exc);
if (exc == NULL &&
seed_value_to_gi_argument (sexten->js_context, val,
&out_args[i].type_info,
&argument, &exc))
{
peas_gi_argument_to_pointer (&out_args[i].type_info,
&argument, out_args[i].ptr);
}
}
}
cleanup:
g_base_info_unref ((GIBaseInfo *) func_info);
if (exc == NULL)
return TRUE;
exc_string = seed_exception_to_string (sexten->js_context, exc);
g_warning ("Seed Exception: %s", exc_string);
g_free (exc_string);
return FALSE;
}
static DBusMessage*
invoke_js_from_dbus(SeedContext ctx,
DBusMessage *method_call,
SeedObject this_obj,
SeedObject method_obj,
SeedException *exception)
{
DBusMessage *reply;
int argc;
SeedValue *argv;
SeedValue rval;
DBusMessageIter arg_iter;
GArray *values;
const char *signature;
reply = NULL;
dbus_message_iter_init(method_call, &arg_iter);
if (!seed_js_values_from_dbus(ctx, &arg_iter, &values, exception))
{
if (!dbus_reply_from_exception(ctx, method_call, &reply, exception))
g_warning("conversion of dbus method arg failed but no exception was set?");
return reply;
}
argc = values->len;
argv = (SeedValue *)values->data;
seed_js_add_dbus_props(ctx, method_call, argv[0], exception);
rval = seed_object_call (ctx, method_obj, NULL,
argc, argv, exception);
if (!seed_value_is_null (ctx, *exception) &&
seed_value_is_object (ctx, *exception))
{
g_warning("dbus method invocation failed");
if (!dbus_reply_from_exception(ctx, method_call, &reply, exception))
g_warning("dbus method invocation failed but no exception was set?");
goto out;
}
if (dbus_reply_from_exception(ctx, method_call, &reply, exception))
{
g_warning("Closure invocation succeeded but an exception was set?");
goto out;
}
if (!signature_from_method(ctx,
method_obj,
&signature, exception))
{
if (!dbus_reply_from_exception(ctx, method_call, &reply, exception))
g_warning("dbus method invocation failed but no exception was set?");
goto out;
}
reply = build_reply_from_jsval(ctx,
signature,
dbus_message_get_sender(method_call),
dbus_message_get_serial(method_call),
rval,
exception);
out:
g_array_free(values, TRUE);
if (reply)
g_warning ("Sending %s reply to dbus method %s",
dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_METHOD_RETURN ?
"normal" : "error",
dbus_message_get_member(method_call));
else
g_warning ("Failed to create reply to dbus method %s",
dbus_message_get_member(method_call));
return reply;
}
