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gtk2/gtk/gtkbuilder.c
Johan Dahlin 099ec157ca Print out the name of the right object in the warning (#451314, Philip 
2007-06-27  Johan Dahlin  <jdahlin@async.com.br>

    * gtk/gtkbuilder.c (apply_delayed_properties): 
    Print out the name of the right object in the warning
    (#451314, Philip Withnall)


svn path=/trunk/; revision=18270
2007-06-27 23:46:54 +00:00

1340 lines
36 KiB
C
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/* GTK - The GIMP Toolkit
* Copyright (C) 1998-2002 James Henstridge <james@daa.com.au>
* Copyright (C) 2006-2007 Async Open Source,
* Johan Dahlin <jdahlin@async.com.br>,
* Henrique Romano <henrique@async.com.br>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#include <config.h>
#include <ctype.h> /* tolower, toupper */
#include <errno.h> /* errno */
#include <stdlib.h> /* strtol, strtoul */
#include <string.h> /* strlen */
#include "gtkbuilder.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtktypebuiltins.h"
#include "gtkalias.h"
static void gtk_builder_class_init (GtkBuilderClass *klass);
static void gtk_builder_init (GtkBuilder *builder);
static void gtk_builder_finalize (GObject *object);
static void gtk_builder_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_builder_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static GType gtk_builder_real_get_type_from_name (GtkBuilder *builder,
const char *type_name);
static gint _gtk_builder_enum_from_string (GType type, const char *string);
enum {
PROP_0,
PROP_TRANSLATION_DOMAIN,
};
struct _GtkBuilderPrivate
{
gchar *domain;
GHashTable *objects;
GHashTable *delayed_properties;
GSList *signals;
gchar *current_toplevel;
};
G_DEFINE_TYPE (GtkBuilder, gtk_builder, G_TYPE_OBJECT)
static void
gtk_builder_class_init (GtkBuilderClass *klass)
{
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = gtk_builder_finalize;
gobject_class->set_property = gtk_builder_set_property;
gobject_class->get_property = gtk_builder_get_property;
klass->get_type_from_name = gtk_builder_real_get_type_from_name;
g_object_class_install_property (gobject_class,
PROP_TRANSLATION_DOMAIN,
g_param_spec_string ("translation-domain",
P_("Translation Domain"),
P_("The translation domain used by gettext"),
NULL,
GTK_PARAM_READWRITE));
g_type_class_add_private (gobject_class, sizeof (GtkBuilderPrivate));
}
static void
gtk_builder_init (GtkBuilder *builder)
{
builder->priv = G_TYPE_INSTANCE_GET_PRIVATE (builder, GTK_TYPE_BUILDER,
GtkBuilderPrivate);
builder->priv->domain = NULL;
builder->priv->objects = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
builder->priv->delayed_properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free, NULL);
}
/*
* GObject virtual methods
*/
static void
gtk_builder_finalize (GObject *object)
{
GtkBuilder *builder = GTK_BUILDER (object);
g_free (builder->priv->domain);
g_free (builder->priv->current_toplevel);
g_hash_table_destroy (builder->priv->delayed_properties);
builder->priv->delayed_properties = NULL;
g_slist_foreach (builder->priv->signals, (GFunc)_free_signal_info, NULL);
g_slist_free (builder->priv->signals);
g_hash_table_destroy (builder->priv->objects);
}
static void
gtk_builder_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkBuilder *builder = GTK_BUILDER (object);
switch (prop_id)
{
case PROP_TRANSLATION_DOMAIN:
gtk_builder_set_translation_domain (builder, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_builder_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkBuilder *builder = GTK_BUILDER (object);
switch (prop_id)
{
case PROP_TRANSLATION_DOMAIN:
g_value_set_string (value, builder->priv->domain);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/*
* Try to map a type name to a _get_type function
* and call it, eg:
*
* GtkWindow -> gtk_window_get_type
* GtkHBox -> gtk_hbox_get_type
* GtkUIManager -> gtk_ui_manager_get_type
*
*/
static GType
_gtk_builder_resolve_type_lazily (const gchar *name)
{
static GModule *module = NULL;
GTypeGetFunc func;
GString *symbol_name = g_string_new ("");
char c, *symbol;
int i;
GType gtype = G_TYPE_INVALID;
if (!module)
module = g_module_open (NULL, 0);
for (i = 0; name[i] != '\0'; i++)
{
c = name[i];
/* skip if uppercase, first or previous is uppercase */
if ((c == toupper (c) &&
i > 0 && name[i-1] != toupper (name[i-1])) ||
(i > 2 && name[i] == toupper (name[i]) &&
name[i-1] == toupper (name[i-1]) &&
name[i-2] == toupper (name[i-2])))
g_string_append_c (symbol_name, '_');
g_string_append_c (symbol_name, tolower (c));
}
g_string_append (symbol_name, "_get_type");
symbol = g_string_free (symbol_name, FALSE);
if (g_module_symbol (module, symbol, (gpointer)&func))
gtype = func ();
g_free (symbol);
return gtype;
}
/*
* GtkBuilder virtual methods
*/
static GType
gtk_builder_real_get_type_from_name (GtkBuilder *builder, const char *type_name)
{
GType gtype;
gtype = g_type_from_name (type_name);
if (gtype != G_TYPE_INVALID)
return gtype;
return _gtk_builder_resolve_type_lazily (type_name);
}
typedef struct
{
gchar *object;
gchar *name;
gchar *value;
} DelayedProperty;
static void
gtk_builder_get_parameters (GtkBuilder *builder,
GType object_type,
const gchar *object_name,
GSList *properties,
GArray **parameters,
GArray **construct_parameters)
{
GSList *l;
GParamSpec *pspec;
GObjectClass *oclass;
DelayedProperty *property;
GError *error = NULL;
oclass = g_type_class_ref (object_type);
g_assert (oclass != NULL);
*parameters = g_array_new (FALSE, FALSE, sizeof (GParameter));
*construct_parameters = g_array_new (FALSE, FALSE, sizeof (GParameter));
for (l = properties; l; l = l->next)
{
PropertyInfo *prop = (PropertyInfo*)l->data;
GParameter parameter = { NULL };
pspec = g_object_class_find_property (G_OBJECT_CLASS (oclass),
prop->name);
if (!pspec)
{
g_warning ("Unknown property: %s.%s\n",
g_type_name (object_type), prop->name);
continue;
}
parameter.name = prop->name;
if (G_IS_PARAM_SPEC_OBJECT (pspec))
{
if (pspec->flags & G_PARAM_CONSTRUCT_ONLY)
{
GObject *object;
object = gtk_builder_get_object (builder, prop->data);
if (!object)
{
g_warning ("failed to get constuct only property %s of %s "
"with value `%s'",
prop->name, object_name, prop->data);
continue;
}
g_value_init (&parameter.value, G_OBJECT_TYPE (object));
g_value_set_object (&parameter.value, g_object_ref (object));
}
else
{
GSList *delayed_properties;
delayed_properties = g_hash_table_lookup (builder->priv->delayed_properties,
builder->priv->current_toplevel);
property = g_slice_new (DelayedProperty);
property->object = g_strdup (object_name);
property->name = g_strdup (prop->name);
property->value = g_strdup (prop->data);
delayed_properties = g_slist_prepend (delayed_properties, property);
g_hash_table_insert (builder->priv->delayed_properties,
g_strdup (builder->priv->current_toplevel),
delayed_properties);
continue;
}
}
else if (!gtk_builder_value_from_string (builder, pspec,
prop->data, &parameter.value, &error))
{
g_warning ("failed to set property %s.%s to %s: %s",
g_type_name (object_type), prop->name, prop->data,
error->message);
g_error_free (error);
error = NULL;
continue;
}
if (pspec->flags & G_PARAM_CONSTRUCT_ONLY)
g_array_append_val (*construct_parameters, parameter);
else
g_array_append_val (*parameters, parameter);
}
g_type_class_unref (oclass);
}
static GObject *
gtk_builder_get_internal_child (GtkBuilder *builder,
ObjectInfo *info,
const gchar *childname)
{
GObject *obj = NULL;
while (!obj)
{
if (!info->parent)
break;
info = (ObjectInfo*)((ChildInfo*)info->parent)->parent;
if (!info)
break;
GTK_NOTE (BUILDER,
g_print ("Trying to get internal child %s from %s\n",
childname,
gtk_buildable_get_name (GTK_BUILDABLE (info->object))));
if (GTK_IS_BUILDABLE (info->object))
obj = gtk_buildable_get_internal_child (GTK_BUILDABLE (info->object),
builder,
childname);
};
if (!obj)
g_error ("Unknown internal child: %s\n", childname);
return obj;
}
GObject *
_gtk_builder_construct (GtkBuilder *builder,
ObjectInfo *info)
{
GArray *parameters, *construct_parameters;
GType object_type;
GObject *obj;
int i;
GtkBuildableIface *iface;
gboolean custom_set_property;
GtkBuildable *buildable;
g_assert (info->class_name != NULL);
object_type = gtk_builder_get_type_from_name (builder, info->class_name);
if (object_type == G_TYPE_INVALID)
g_error ("Invalid type: %s", info->class_name);
gtk_builder_get_parameters (builder, object_type,
info->id,
info->properties,
&parameters,
&construct_parameters);
if (info->constructor)
{
GObject *constructor;
constructor = gtk_builder_get_object (builder, info->constructor);
if (constructor == NULL)
g_error ("Unknown constructor for %s: %s\n", info->id,
info->constructor);
obj = gtk_buildable_construct_child (GTK_BUILDABLE (constructor),
builder,
info->id);
g_assert (obj != NULL);
if (construct_parameters->len)
g_warning ("Can't pass in construct-only parameters to %s", info->id);
}
else if (info->parent && ((ChildInfo*)info->parent)->internal_child != NULL)
{
gchar *childname = ((ChildInfo*)info->parent)->internal_child;
obj = gtk_builder_get_internal_child (builder, info, childname);
if (construct_parameters->len)
g_warning ("Can't pass in construct-only parameters to %s", childname);
}
else
{
obj = g_object_newv (object_type,
construct_parameters->len,
(GParameter *)construct_parameters->data);
GTK_NOTE (BUILDER,
g_print ("created %s of type %s\n", info->id, info->class_name));
for (i = 0; i < construct_parameters->len; i++)
{
GParameter *param = &g_array_index (construct_parameters,
GParameter, i);
g_value_unset (&param->value);
}
}
g_array_free (construct_parameters, TRUE);
custom_set_property = FALSE;
buildable = NULL;
iface = NULL;
if (GTK_IS_BUILDABLE (obj))
{
buildable = GTK_BUILDABLE (obj);
iface = GTK_BUILDABLE_GET_IFACE (obj);
if (iface->set_buildable_property)
custom_set_property = TRUE;
}
for (i = 0; i < parameters->len; i++)
{
GParameter *param = &g_array_index (parameters, GParameter, i);
if (custom_set_property)
iface->set_buildable_property (buildable, builder, param->name, &param->value);
else
g_object_set_property (obj, param->name, &param->value);
#if G_ENABLE_DEBUG
if (gtk_debug_flags & GTK_DEBUG_BUILDER)
{
gchar *str = g_strdup_value_contents ((const GValue*)&param->value);
g_print ("set %s: %s = %s\n", info->id, param->name, str);
g_free (str);
}
#endif
g_value_unset (&param->value);
}
g_array_free (parameters, TRUE);
if (GTK_IS_BUILDABLE (obj))
gtk_buildable_set_name (buildable, info->id);
else
g_object_set_data_full (obj,
"gtk-builder-name",
g_strdup (info->id),
g_free);
if (!info->parent)
{
g_free (builder->priv->current_toplevel);
builder->priv->current_toplevel = g_strdup (info->id);
}
g_hash_table_insert (builder->priv->objects, g_strdup (info->id), obj);
builder->priv->signals = g_slist_concat (builder->priv->signals,
g_slist_copy (info->signals));
return obj;
}
void
_gtk_builder_add (GtkBuilder *builder,
ChildInfo *child_info)
{
GObject *object;
GObject *parent;
/* Internal children are already added
* Also prevent us from being called twice.
*/
if (!child_info ||
child_info->internal_child ||
child_info->added)
return;
object = child_info->object;
if (!object)
return;
if (!child_info->parent)
{
g_warning ("%s: Not adding, No parent\n",
gtk_buildable_get_name (GTK_BUILDABLE (object)));
return;
}
g_assert (object != NULL);
parent = ((ObjectInfo*)child_info->parent)->object;
g_assert (GTK_IS_BUILDABLE (parent));
GTK_NOTE (BUILDER,
g_print ("adding %s to %s\n",
gtk_buildable_get_name (GTK_BUILDABLE (object)),
gtk_buildable_get_name (GTK_BUILDABLE (parent))));
gtk_buildable_add_child (GTK_BUILDABLE (parent), builder, object,
child_info->type);
child_info->added = TRUE;
}
static void
apply_delayed_properties (const gchar *window_name,
GSList *props,
GtkBuilder *builder)
{
GSList *l;
DelayedProperty *property;
GObject *object;
GType object_type;
GObjectClass *oclass;
GParamSpec *pspec;
g_assert (props != NULL);
props = g_slist_reverse (props);
for (l = props; l; l = l->next)
{
property = (DelayedProperty*)l->data;
object = g_hash_table_lookup (builder->priv->objects, property->object);
g_assert (object != NULL);
object_type = G_OBJECT_TYPE (object);
g_assert (object_type != G_TYPE_INVALID);
oclass = g_type_class_ref (object_type);
g_assert (oclass != NULL);
pspec = g_object_class_find_property (G_OBJECT_CLASS (oclass),
property->name);
if (!pspec)
g_warning ("Unknown property: %s.%s\n", g_type_name (object_type),
property->name);
else
{
GObject *obj;
obj = g_hash_table_lookup (builder->priv->objects, property->value);
if (!obj)
g_warning ("No object called: %s\n", property->value);
else
g_object_set (object, property->name, obj, NULL);
}
g_free (property->value);
g_free (property->object);
g_free (property->name);
g_slice_free (DelayedProperty, property);
g_type_class_unref (oclass);
}
g_slist_free (props);
}
void
_gtk_builder_finish (GtkBuilder *builder)
{
if (builder->priv->delayed_properties)
g_hash_table_foreach (builder->priv->delayed_properties,
(GHFunc)apply_delayed_properties, builder);
}
/**
* gtk_builder_new:
*
* Creates a new builder object.
*
* Return value: a new builder object.
*
* Since: 2.12
**/
GtkBuilder *
gtk_builder_new (void)
{
return g_object_new (GTK_TYPE_BUILDER, NULL);
}
/**
* gtk_builder_add_from_file:
* @builder: a #GtkBuilder
* @filename: the name of the file to parse
* @error: return location for an error
*
* Parses a string containing a <link linkend="BUILDER-UI">GtkBuilder UI definition</link> and
* merges it with the current contents of @builder.
*
* Returns: A positive value on success, 0 if an error occurred
*
* Since: 2.12
**/
guint
gtk_builder_add_from_file (GtkBuilder *builder,
const gchar *filename,
GError **error)
{
char *buffer;
gsize length;
GError *tmp_error;
g_return_val_if_fail (GTK_IS_BUILDER (builder), 0);
g_return_val_if_fail (filename != NULL, 0);
tmp_error = NULL;
if (!g_file_get_contents (filename, &buffer, &length, &tmp_error))
{
g_propagate_error (error, tmp_error);
return 0;
}
_gtk_builder_parser_parse_buffer (builder, filename,
buffer, length,
&tmp_error);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
g_free (buffer);
return 1;
}
/**
* gtk_builder_add_from_string:
* @builder: a #GtkBuilder
* @buffer: the string to parse
* @length: the length of @buffer (may be -1 if @buffer is nul-terminated)
* @error: return location for an error
*
* Parses a file containing a <link linkend="BUILDER-UI">GtkBuilder UI definition</link> and
* merges it with the current contents of @builder.
*
* Returns: A positive value on success, 0 if an error occurred
*
* Since: 2.12
**/
guint
gtk_builder_add_from_string (GtkBuilder *builder,
const gchar *buffer,
gsize length,
GError **error)
{
GError *tmp_error;
g_return_val_if_fail (GTK_IS_BUILDER (builder), 0);
g_return_val_if_fail (buffer != NULL, 0);
tmp_error = NULL;
_gtk_builder_parser_parse_buffer (builder, "<input>",
buffer, length,
&tmp_error);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
return 1;
}
/**
* gtk_builder_get_object:
* @builder: a #GtkBuilder
* @name: name of object to get
*
* Gets the object named @name.
*
* Return value: the object named @name or %NULL if it could not be
* found in the object tree
*
* Since: 2.12
**/
GObject *
gtk_builder_get_object (GtkBuilder *builder,
const gchar *name)
{
g_return_val_if_fail (GTK_IS_BUILDER (builder), NULL);
g_return_val_if_fail (name != NULL, NULL);
return g_hash_table_lookup (builder->priv->objects, name);
}
static void
object_add_to_list (gchar *object_id,
GObject *object,
GSList **list)
{
*list = g_slist_prepend (*list, object);
}
/**
* gtk_builder_get_objects:
* @builder: a #GtkBuilder
*
* Gets all objects that have been constructed by @builder.
*
* Return value: a newly-allocated #GSList containing all the objects
* constructed by the #GtkBuilder instance
*
* Since: 2.12
**/
GSList *
gtk_builder_get_objects (GtkBuilder *builder)
{
GSList *objects = NULL;
g_return_val_if_fail (GTK_IS_BUILDER (builder), NULL);
g_hash_table_foreach (builder->priv->objects, (GHFunc)object_add_to_list, &objects);
return g_slist_reverse (objects);
}
/**
* gtk_builder_set_translation_domain:
* @builder: a #GtkBuilder
* @domain: the translation domain or %NULL
*
* Sets the translation domain and uses dgettext() for translating the
* property values marked as translatable from an interface description.
* You can also pass in %NULL to this method to use gettext() instead of
* dgettext().
*
* Since: 2.12
**/
void
gtk_builder_set_translation_domain (GtkBuilder *builder,
const gchar *domain)
{
gchar *new_domain;
g_return_if_fail (GTK_IS_BUILDER (builder));
new_domain = g_strdup (domain);
g_free (builder->priv->domain);
builder->priv->domain = new_domain;
g_object_notify (G_OBJECT (builder), "translation-domain");
}
/**
* gtk_builder_get_translation_domain:
* @builder: a #GtkBuilder
*
* Gets the translation domain.
*
* Return value: the translation domain. This string is owned
* by the builder object and must not be modified or freed.
*
* Since: 2.12
**/
const gchar *
gtk_builder_get_translation_domain (GtkBuilder *builder)
{
g_return_val_if_fail (GTK_IS_BUILDER (builder), NULL);
return builder->priv->domain;
}
typedef struct {
GModule *module;
gpointer data;
} connect_args;
static void
gtk_builder_connect_signals_default (GtkBuilder *builder,
GObject *object,
const gchar *signal_name,
const gchar *handler_name,
GObject *connect_object,
GConnectFlags flags,
gpointer user_data)
{
GCallback func;
connect_args *args = (connect_args*)user_data;
if (!g_module_symbol (args->module, handler_name, (gpointer)&func))
{
g_warning ("could not find signal handler '%s'", handler_name);
return;
}
if (connect_object)
g_signal_connect_object (object, signal_name, func, connect_object, flags);
else
g_signal_connect_data (object, signal_name, func, args->data, NULL, flags);
}
/**
* gtk_builder_connect_signals:
* @builder: a #GtkBuilder
* @user_data: a pointer to a structure sent in as user data to all signals
*
* This method is a simpler variation of gtk_builder_connect_signals_full().
* It uses #GModule's introspective features (by opening the module %NULL) to
* look at the application's symbol table. From here it tries to match
* the signal handler names given in the interface description with
* symbols in the application and connects the signals.
*
* Note that this function will not work correctly if #GModule is not
* supported on the platform.
*
* Since: 2.12
**/
void
gtk_builder_connect_signals (GtkBuilder *builder,
gpointer user_data)
{
connect_args *args;
g_return_if_fail (GTK_IS_BUILDER (builder));
if (!g_module_supported ())
g_error ("gtk_builder_connect_signals requires working GModule");
args = g_slice_new0 (connect_args);
args->module = g_module_open (NULL, G_MODULE_BIND_LAZY);
args->data = user_data;
gtk_builder_connect_signals_full (builder,
gtk_builder_connect_signals_default,
args);
g_module_close (args->module);
g_slice_free (connect_args, args);
}
/**
* GtkBuilderConnectFunc:
* @builder: a #GtkBuilder
* @object: a GObject subclass to connect a signal to
* @signal_name: name of the signal
* @handler_name: name of the handler
* @connect_object: GObject, if non-%NULL, use g_signal_connect_object.
* @flags: #GConnectFlags to use
* @user_data: user data
*
* This is the signature of a function used to connect signals. It is used
* by the gtk_builder_connect_signals() and gtk_builder_connect_signals_full()
* methods. It is mainly intended for interpreted language bindings, but
* could be useful where the programmer wants more control over the signal
* connection process.
*
* Since: 2.12
*/
/**
* gtk_builder_connect_signals_full:
* @builder: a #GtkBuilder
* @func: the function used to connect the signals.
* @user_data: arbitrary data that will be passed to the connection function.
*
* This function can be thought of the interpreted language binding
* version of gtk_builder_signal_autoconnect(), except that it does not
* require gmodule to function correctly.
*
* Since: 2.12
*/
void
gtk_builder_connect_signals_full (GtkBuilder *builder,
GtkBuilderConnectFunc func,
gpointer user_data)
{
GSList *l;
GObject *object;
GObject *connect_object;
g_return_if_fail (GTK_IS_BUILDER (builder));
g_return_if_fail (func != NULL);
if (!builder->priv->signals)
return;
builder->priv->signals = g_slist_reverse (builder->priv->signals);
for (l = builder->priv->signals; l; l = l->next)
{
SignalInfo *signal = (SignalInfo*)l->data;
g_assert (signal != NULL);
g_assert (signal->name != NULL);
object = g_hash_table_lookup (builder->priv->objects,
signal->object_name);
g_assert (object != NULL);
connect_object = NULL;
if (signal->connect_object_name)
{
connect_object = g_hash_table_lookup (builder->priv->objects,
signal->connect_object_name);
if (!connect_object)
g_warning ("could not lookup object %s on signal %s of object %s",
signal->connect_object_name, signal->name,
signal->object_name);
}
func (builder, object, signal->name, signal->handler,
connect_object, signal->flags, user_data);
}
g_slist_foreach (builder->priv->signals, (GFunc)_free_signal_info, NULL);
g_slist_free (builder->priv->signals);
builder->priv->signals = NULL;
}
/**
* gtk_builder_value_from_string
* @builder: a #GtkBuilder
* @pspec: the GParamSpec for the property
* @string: the string representation of the value.
* @value: the GValue to store the result in.
* @error: return location for an error
*
* This function demarshals a value from a string. This function
* calls g_value_init() on the @value argument, so it need not be
* initialised beforehand.
*
* This function can handle char, uchar, boolean, int, uint, long,
* ulong, enum, flags, float, double, string, GdkColor and
* GtkAdjustment type values. Support for GtkWidget type values is
* still to come.
*
* Returns: %TRUE on success.
*
* Since: 2.12
*/
gboolean
gtk_builder_value_from_string (GtkBuilder *builder,
GParamSpec *pspec,
const gchar *string,
GValue *value,
GError **error)
{
/*
* GParamSpecUnichar has the internal type G_TYPE_UINT,
* so we cannot handle this in the switch, do it separately
*/
if (G_IS_PARAM_SPEC_UNICHAR (pspec))
{
gunichar c;
g_value_init (value, G_TYPE_UINT);
c = g_utf8_get_char_validated (string, strlen (string));
if (c > 0)
g_value_set_uint (value, c);
return TRUE;
}
return gtk_builder_value_from_string_type (builder,
G_PARAM_SPEC_VALUE_TYPE (pspec),
string, value, error);
}
/**
* gtk_builder_value_from_string_type
* @builder: a #GtkBuilder
* @type: the GType of the value
* @string: the string representation of the value.
* @value: the GValue to store the result in.
* @error: return location for an error
*
* Like gtk_builder_value_from_string(), but takes a #GType instead of #GParamSpec.
*
* Returns: %TRUE on success.
*
* Since: 2.12
*/
gboolean
gtk_builder_value_from_string_type (GtkBuilder *builder,
GType type,
const gchar *string,
GValue *value,
GError **error)
{
gboolean ret = TRUE;
g_return_val_if_fail (type != G_TYPE_INVALID, FALSE);
g_return_val_if_fail (string != NULL, FALSE);
g_value_init (value, type);
switch (G_TYPE_FUNDAMENTAL (type))
{
case G_TYPE_CHAR:
g_value_set_char (value, string[0]);
break;
case G_TYPE_UCHAR:
g_value_set_uchar (value, (guchar)string[0]);
break;
case G_TYPE_BOOLEAN:
{
gboolean b;
switch (g_ascii_tolower (string[0]))
{
case 't':
case 'y':
b = TRUE;
break;
case 'f':
case 'n':
b = FALSE;
break;
default:
{
gchar *endptr;
errno = 0;
b = strtol (string, &endptr, 0);
if (errno || endptr == string)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"could not parse int `%s'",
string);
ret = FALSE;
break;
}
}
break;
}
g_value_set_boolean (value, b);
break;
}
case G_TYPE_INT:
case G_TYPE_LONG:
{
long l;
gchar *endptr;
errno = 0;
l = strtol (string, &endptr, 0);
if (errno || endptr == string)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"could not parse long `%s'",
string);
ret = FALSE;
break;
}
if (G_VALUE_HOLDS_INT (value))
g_value_set_int (value, l);
else
g_value_set_long (value, l);
break;
}
case G_TYPE_UINT:
case G_TYPE_ULONG:
{
gulong ul;
gchar *endptr;
errno = 0;
ul = strtoul (string, &endptr, 0);
if (errno || endptr == string)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"could not parse ulong `%s'",
string);
ret = FALSE;
break;
}
if (G_VALUE_HOLDS_UINT (value))
g_value_set_uint (value, ul);
else
g_value_set_ulong (value, ul);
break;
}
case G_TYPE_ENUM:
g_value_set_enum (value, _gtk_builder_enum_from_string (type, string));
break;
case G_TYPE_FLAGS:
g_value_set_flags (value, _gtk_builder_flags_from_string (type, string));
break;
case G_TYPE_FLOAT:
case G_TYPE_DOUBLE:
{
double d;
gchar *endptr;
errno = 0;
d = g_ascii_strtod (string, &endptr);
if (errno || endptr == string)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"could not parse double `%s'",
string);
ret = FALSE;
break;
}
if (G_VALUE_HOLDS_FLOAT (value))
g_value_set_float (value, d);
else
g_value_set_double (value, d);
break;
}
case G_TYPE_STRING:
g_value_set_string (value, string);
break;
case G_TYPE_BOXED:
if (G_VALUE_HOLDS (value, GDK_TYPE_COLOR))
{
GdkColor colour = { 0, };
if (gdk_color_parse (string, &colour) &&
gdk_colormap_alloc_color (gtk_widget_get_default_colormap (),
&colour, FALSE, TRUE))
g_value_set_boxed (value, &colour);
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"could not parse color `%s'",
string);
ret = FALSE;
}
}
else if (G_VALUE_HOLDS (value, G_TYPE_STRV))
{
char **vector = g_strsplit (string, "\n", 0);
g_value_take_boxed (value, vector);
}
else
ret = FALSE;
break;
case G_TYPE_OBJECT:
#if 0
if (G_VALUE_HOLDS (value, GDK_TYPE_PIXBUF))
{
gchar *filename;
GError *tmp_error = NULL;
GdkPixbuf *pixbuf;
filename = gtk_xml_relative_file (xml, string);
pixbuf = gdk_pixbuf_new_from_file (filename, &tmp_error);
if (pixbuf)
{
g_value_set_object (value, pixbuf);
g_object_unref (G_OBJECT (pixbuf));
}
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"could not load image `%s'",
tmp_error->message);
g_error_free (tmp_error);
ret = FALSE;
}
g_free (filename);
}
else
#endif
ret = FALSE;
break;
default:
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"unsupported GType `%s'",
g_type_name (type));
ret = FALSE;
break;
}
return ret;
}
static gint
_gtk_builder_enum_from_string (GType type, const char *string)
{
GEnumClass *eclass;
GEnumValue *ev;
gchar *endptr;
gint ret = 0;
g_return_val_if_fail (G_TYPE_IS_ENUM (type), 0);
g_return_val_if_fail (string != NULL, 0);
ret = strtoul (string, &endptr, 0);
if (endptr != string) /* parsed a number */
return ret;
eclass = g_type_class_ref (type);
ev = g_enum_get_value_by_name (eclass, string);
if (!ev)
ev = g_enum_get_value_by_nick (eclass, string);
if (ev)
ret = ev->value;
g_type_class_unref (eclass);
return ret;
}
guint
_gtk_builder_flags_from_string (GType type, const char *string)
{
GFlagsClass *fclass;
gchar *endptr, *prevptr;
guint i, j, ret;
char *flagstr;
GFlagsValue *fv;
const char *flag;
gunichar ch;
gboolean eos;
g_return_val_if_fail (G_TYPE_IS_FLAGS (type), 0);
g_return_val_if_fail (string != 0, 0);
ret = strtoul (string, &endptr, 0);
if (endptr != string) /* parsed a number */
return ret;
fclass = g_type_class_ref (type);
flagstr = g_strdup (string);
for (ret = i = j = 0; ; i++)
{
eos = flagstr[i] == '\0';
if (!eos && flagstr[i] != '|')
continue;
flag = &flagstr[j];
endptr = &flagstr[i];
if (!eos)
{
flagstr[i++] = '\0';
j = i;
}
/* trim spaces */
for (;;)
{
ch = g_utf8_get_char (flag);
if (!g_unichar_isspace (ch))
break;
flag = g_utf8_next_char (flag);
}
while (endptr > flag)
{
prevptr = g_utf8_prev_char (endptr);
ch = g_utf8_get_char (prevptr);
if (!g_unichar_isspace (ch))
break;
endptr = prevptr;
}
if (endptr > flag)
{
*endptr = '\0';
fv = g_flags_get_value_by_name (fclass, flag);
if (!fv)
fv = g_flags_get_value_by_nick (fclass, flag);
if (fv)
ret |= fv->value;
else
g_warning ("Unknown flag: '%s'", flag);
}
if (eos)
break;
}
g_free (flagstr);
g_type_class_unref (fclass);
return ret;
}
/**
* gtk_builder_get_type_from_name:
* @builder: a #GtkBuilder
* @type_name: Type name to lookup
*
* This method is used to lookup a type. It can be implemented in a
* subclass to override the #GType of an object created by the builder.
*
* Returns: the #GType found for @type_name or #G_TYPE_INVALID if no
* type was found
*
* Since 2.12
*/
GType
gtk_builder_get_type_from_name (GtkBuilder *builder, const gchar *type_name)
{
g_return_val_if_fail (GTK_IS_BUILDER (builder), G_TYPE_INVALID);
g_return_val_if_fail (type_name != NULL, G_TYPE_INVALID);
return GTK_BUILDER_GET_CLASS (builder)->get_type_from_name (builder, type_name);
}
/**
* gtk_builder_error_quark:
*
* Registers an error quark for #GtkBuilder if necessary.
*
* Return value: The error quark used for #GtkBuilder errors.
*
* Since: 2.12
**/
GQuark
gtk_builder_error_quark (void)
{
return g_quark_from_static_string ("gtk-builder-error-quark");
}
#define __GTK_BUILDER_C__
#include "gtkaliasdef.c"
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