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gtk2/gtk/gtkbuilder.c
Matthias Clasen df455db2e3 GtkBuilder: Make IDs optional 
One requirement of .ui files is that each object must have an ID,
even if it is never referred to or directly loaded from the code.
This makes editing .ui files much more onerous than it has to be,
due to the frequent need to invent new IDs, while avoiding
clashes.

This commit makes IDs optional in the XML. They only need to
be provided for objects which are referred to or explictly loaded
from the code. Since GtkBuilder needs IDs for its own internal
accounting, we create IDs of the form ___object_N___ if not
specified in the XML.

https://bugzilla.gnome.org/show_bug.cgi?id=712553
2013-11-18 06:00:02 -05:00

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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, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:gtkbuilder
* @Short_description: Build an interface from an XML UI definition
* @Title: GtkBuilder
*
* A GtkBuilder is an auxiliary object that reads textual descriptions
* of a user interface and instantiates the described objects. To create
* a GtkBuilder from a user interface description, call
* gtk_builder_new_from_file(), gtk_builder_new_from_resource() or
* gtk_builder_new_from_string().
*
* In the (unusual) case that you want to add user interface
* descriptions from multiple sources to the same GtkBuilder you can
* call gtk_builder_new() to get an empty builder and populate it by
* (multiple) calls to gtk_builder_add_from_file(),
* gtk_builder_add_from_resource() or gtk_builder_add_from_string().
*
* A GtkBuilder holds a reference to all objects that it has constructed
* and drops these references when it is finalized. This finalization can
* cause the destruction of non-widget objects or widgets which are not
* contained in a toplevel window. For toplevel windows constructed by a
* builder, it is the responsibility of the user to call gtk_widget_destroy()
* to get rid of them and all the widgets they contain.
*
* The functions gtk_builder_get_object() and gtk_builder_get_objects()
* can be used to access the widgets in the interface by the names assigned
* to them inside the UI description. Toplevel windows returned by these
* functions will stay around until the user explicitly destroys them
* with gtk_widget_destroy(). Other widgets will either be part of a
* larger hierarchy constructed by the builder (in which case you should
* not have to worry about their lifecycle), or without a parent, in which
* case they have to be added to some container to make use of them.
* Non-widget objects need to be reffed with g_object_ref() to keep them
* beyond the lifespan of the builder.
*
* The function gtk_builder_connect_signals() and variants thereof can be
* used to connect handlers to the named signals in the description.
*
* <refsect2 id="BUILDER-UI">
* <title>GtkBuilder UI Definitions</title>
* <para>
* GtkBuilder parses textual descriptions of user interfaces which are specified
* in an XML format which can be roughly described by the RELAX NG schema below.
* We refer to these descriptions as <firstterm>GtkBuilder UI definitions</firstterm>
* or just <firstterm>UI definitions</firstterm> if the context is clear. Do not
* confuse GtkBuilder UI Definitions with
* <link linkend="XML-UI">GtkUIManager UI Definitions</link>, which are more
* limited in scope. It is common to use <filename>.ui</filename> as the filename extension for files containing GtkBuilder UI definitions.
* </para>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gtk/gtkbuilder.rnc">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* <para>
* The toplevel element is &lt;interface&gt;. It optionally takes a "domain"
* attribute, which will make the builder look for translated strings using
* dgettext() in the domain specified. This can also be done by calling
* gtk_builder_set_translation_domain() on the builder. Objects are described by
* &lt;object&gt; elements, which can contain &lt;property&gt; elements to set
* properties, &lt;signal&gt; elements which connect signals to handlers, and
* &lt;child&gt; elements, which describe child objects (most often widgets
* inside a container, but also e.g. actions in an action group, or columns in a
* tree model). A &lt;child&gt; element contains an &lt;object&gt; element which
* describes the child object. The target toolkit version(s) are described by
* &lt;requires&gt; elements, the "lib" attribute specifies the widget library
* in question (currently the only supported value is "gtk+") and the "version"
* attribute specifies the target version in the form
* "&lt;major&gt;.&lt;minor&gt;". The builder will error out if the version
* requirements are not met.
*
* Typically, the specific kind of object represented by an &lt;object&gt;
* element is specified by the "class" attribute. If the type has not been
* loaded yet, GTK+ tries to find the <function>_get_type()</function> from the
* class name by applying heuristics. This works in most cases, but if
* necessary, it is possible to specify the name of the
* <function>_get_type()</function> explictly with the "type-func" attribute.
* As a special case, GtkBuilder allows to use an object that has been
* constructed by a #GtkUIManager in another part of the UI definition by
* specifying the id of the #GtkUIManager in the "constructor" attribute and the
* name of the object in the "id" attribute.
*
* Objects may be given a name with the "id" attribute, which allows the
* application to retrieve them from the builder with gtk_builder_get_object().
* An id is also necessary to use the object as property value in other parts of
* the UI definition. GTK+ reserves ids starting and ending with ___ (3 underscores)
* for its own purposes.
* </para>
* <para>
* Setting properties of objects is pretty straightforward with the
* &lt;property&gt; element: the "name" attribute specifies the name of the
* property, and the content of the element specifies the value. If the
* "translatable" attribute is set to a true value, GTK+ uses gettext() (or
* dgettext() if the builder has a translation domain set) to find a translation
* for the value. This happens before the value is parsed, so it can be used for
* properties of any type, but it is probably most useful for string properties.
* It is also possible to specify a context to disambiguate short strings, and
* comments which may help the translators.
*
* GtkBuilder can parse textual representations for the most common property
* types: characters, strings, integers, floating-point numbers, booleans
* (strings like "TRUE", "t", "yes", "y", "1" are interpreted as %TRUE, strings
* like "FALSE, "f", "no", "n", "0" are interpreted as %FALSE), enumerations
* (can be specified by their name, nick or integer value), flags (can be
* specified by their name, nick, integer value, optionally combined with "|",
* e.g. "GTK_VISIBLE|GTK_REALIZED") and colors (in a format understood by
* gdk_color_parse()). Pixbufs can be specified as a filename of an image file to load.
* Objects can be referred to by their name and by default refer to objects declared
* in the local xml fragment and objects exposed via gtk_builder_expose_object().
*
* In general, GtkBuilder allows forward references to objects &mdash declared
* in the local xml; an object doesn't have to be constructed before it can be referred to.
* The exception to this rule is that an object has to be constructed before
* it can be used as the value of a construct-only property.
*
* Signal handlers are set up with the &lt;signal&gt; element. The "name"
* attribute specifies the name of the signal, and the "handler" attribute
* specifies the function to connect to the signal. By default, GTK+ tries to
* find the handler using g_module_symbol(), but this can be changed by passing
* a custom #GtkBuilderConnectFunc to gtk_builder_connect_signals_full(). The
* remaining attributes, "after", "swapped" and "object", have the same meaning
* as the corresponding parameters of the g_signal_connect_object() or
* g_signal_connect_data() functions. A "last_modification_time" attribute
* is also allowed, but it does not have a meaning to the builder.
*
* Sometimes it is necessary to refer to widgets which have implicitly been
* constructed by GTK+ as part of a composite widget, to set properties on them
* or to add further children (e.g. the @vbox of a #GtkDialog). This can be
* achieved by setting the "internal-child" propery of the &lt;child&gt; element
* to a true value. Note that GtkBuilder still requires an &lt;object&gt;
* element for the internal child, even if it has already been constructed.
*
* A number of widgets have different places where a child can be added (e.g.
* tabs vs. page content in notebooks). This can be reflected in a UI definition
* by specifying the "type" attribute on a &lt;child&gt;. The possible values
* for the "type" attribute are described in the sections describing the
* widget-specific portions of UI definitions.
* </para>
* <example>
* <title>A GtkBuilder UI Definition</title>
* <programlisting><![CDATA[
* <interface>
* <object class="GtkDialog" id="dialog1">
* <child internal-child="vbox">
* <object class="GtkVBox" id="vbox1">
* <property name="border-width">10</property>
* <child internal-child="action_area">
* <object class="GtkHButtonBox" id="hbuttonbox1">
* <property name="border-width">20</property>
* <child>
* <object class="GtkButton" id="ok_button">
* <property name="label">gtk-ok</property>
* <property name="use-stock">TRUE</property>
* <signal name="clicked" handler="ok_button_clicked"/>
* </object>
* </child>
* </object>
* </child>
* </object>
* </child>
* </object>
* </interface>
* ]]></programlisting>
* </example>
* <para>
* Beyond this general structure, several object classes define their own XML
* DTD fragments for filling in the ANY placeholders in the DTD above. Note that
* a custom element in a &lt;child&gt; element gets parsed by the custom tag
* handler of the parent object, while a custom element in an &lt;object&gt;
* element gets parsed by the custom tag handler of the object.
*
* These XML fragments are explained in the documentation of the respective
* objects, see
* <link linkend="GtkWidget-BUILDER-UI">GtkWidget</link>,
* <link linkend="GtkLabel-BUILDER-UI">GtkLabel</link>,
* <link linkend="GtkWindow-BUILDER-UI">GtkWindow</link>,
* <link linkend="GtkContainer-BUILDER-UI">GtkContainer</link>,
* <link linkend="GtkDialog-BUILDER-UI">GtkDialog</link>,
* <link linkend="GtkCellLayout-BUILDER-UI">GtkCellLayout</link>,
* <link linkend="GtkColorSelectionDialog-BUILDER-UI">GtkColorSelectionDialog</link>,
* <link linkend="GtkFontSelectionDialog-BUILDER-UI">GtkFontSelectionDialog</link>,
* <link linkend="GtkExpander-BUILDER-UI">GtkExpander</link>,
* <link linkend="GtkFrame-BUILDER-UI">GtkFrame</link>,
* <link linkend="GtkListStore-BUILDER-UI">GtkListStore</link>,
* <link linkend="GtkTreeStore-BUILDER-UI">GtkTreeStore</link>,
* <link linkend="GtkNotebook-BUILDER-UI">GtkNotebook</link>,
* <link linkend="GtkSizeGroup-BUILDER-UI">GtkSizeGroup</link>,
* <link linkend="GtkTreeView-BUILDER-UI">GtkTreeView</link>,
* <link linkend="GtkUIManager-BUILDER-UI">GtkUIManager</link>,
* <link linkend="GtkActionGroup-BUILDER-UI">GtkActionGroup</link>.
* <link linkend="GtkMenuItem-BUILDER-UI">GtkMenuItem</link>,
* <link linkend="GtkMenuToolButton-BUILDER-UI">GtkMenuToolButton</link>,
* <link linkend="GtkAssistant-BUILDER-UI">GtkAssistant</link>,
* <link linkend="GtkScale-BUILDER-UI">GtkScale</link>,
* <link linkend="GtkComboBoxText-BUILDER-UI">GtkComboBoxText</link>,
* <link linkend="GtkRecentFilter-BUILDER-UI">GtkRecentFilter</link>,
* <link linkend="GtkFileFilter-BUILDER-UI">GtkFileFilter</link>,
* <link linkend="GtkTextTagTable-BUILDER-UI">GtkTextTagTable</link>.
* </para>
* <para>
* Additionally, since 3.10 a special &lt;template&gt; tag has been added to the format
* allowing one to <link linkend="GtkWidget-BUILDER-TEMPLATES">define a widget class's components</link>.
* </para>
* </refsect2>
* <refsect2>
* <title>Embedding other XML</title>
* <para>
* Apart from the language for UI descriptions that has been explained
* in the previous section, GtkBuilder can also parse XML fragments
* of <link linkend="gio-GMenu-Markup">GMenu markup</link>. The resulting
* #GMenu object and its named submenus are available via
* gtk_builder_get_object() like other constructed objects.
* </para>
* </refsect2>
*/
#include "config.h"
#include <errno.h> /* errno */
#include <stdlib.h>
#include <string.h> /* strlen */
#include "gtkbuilder.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtkdebug.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtktypebuiltins.h"
#include "gtkwindow.h"
#include "gtkicontheme.h"
#include "gtktestutils.h"
#include "deprecated/gtkstock.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 gchar *type_name);
enum {
PROP_0,
PROP_TRANSLATION_DOMAIN,
};
struct _GtkBuilderPrivate
{
gchar *domain;
GHashTable *objects;
GHashTable *callbacks;
GSList *delayed_properties;
GSList *signals;
gchar *filename;
gchar *resource_prefix;
GType template_type;
GtkApplication *application;
};
G_DEFINE_TYPE_WITH_PRIVATE (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;
/**
* GtkBuilder:translation-domain:
*
* The translation domain used when translating property values that
* have been marked as translatable in interface descriptions.
* If the translation domain is %NULL, #GtkBuilder uses gettext(),
* otherwise g_dgettext().
*
* Since: 2.12
*/
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));
}
static void
gtk_builder_init (GtkBuilder *builder)
{
builder->priv = gtk_builder_get_instance_private (builder);
builder->priv->domain = NULL;
builder->priv->objects = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, g_object_unref);
}
/*
* GObject virtual methods
*/
static void
gtk_builder_finalize (GObject *object)
{
GtkBuilderPrivate *priv = GTK_BUILDER (object)->priv;
g_free (priv->domain);
g_free (priv->filename);
g_free (priv->resource_prefix);
g_hash_table_destroy (priv->objects);
if (priv->callbacks)
g_hash_table_destroy (priv->callbacks);
g_slist_foreach (priv->signals, (GFunc) _free_signal_info, NULL);
g_slist_free (priv->signals);
G_OBJECT_CLASS (gtk_builder_parent_class)->finalize (object);
}
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 == g_ascii_toupper (c) &&
i > 0 && name[i-1] != g_ascii_toupper (name[i-1])) ||
(i > 2 && name[i] == g_ascii_toupper (name[i]) &&
name[i-1] == g_ascii_toupper (name[i-1]) &&
name[i-2] == g_ascii_toupper (name[i-2])))
g_string_append_c (symbol_name, '_');
g_string_append_c (symbol_name, g_ascii_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 gchar *type_name)
{
GType gtype;
gtype = g_type_from_name (type_name);
if (gtype != G_TYPE_INVALID)
return gtype;
gtype = _gtk_builder_resolve_type_lazily (type_name);
if (gtype != G_TYPE_INVALID)
return gtype;
gtk_test_register_all_types ();
return g_type_from_name (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,
GParamFlags filter_flags,
GArray **parameters,
GArray **filtered_parameters)
{
GSList *l;
GParamSpec *pspec;
GObjectClass *oclass;
DelayedProperty *property;
GError *error = NULL;
oclass = g_type_class_ref (object_type);
g_assert (oclass != NULL);
if (parameters)
*parameters = g_array_new (FALSE, FALSE, sizeof (GParameter));
if (filtered_parameters)
*filtered_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",
g_type_name (object_type), prop->name);
continue;
}
parameter.name = prop->name;
if (G_IS_PARAM_SPEC_OBJECT (pspec) &&
(G_PARAM_SPEC_VALUE_TYPE (pspec) != GDK_TYPE_PIXBUF))
{
GObject *object = gtk_builder_get_object (builder, prop->data);
if (object)
{
g_value_init (&parameter.value, G_OBJECT_TYPE (object));
g_value_set_object (&parameter.value, object);
}
else
{
if (pspec->flags & G_PARAM_CONSTRUCT_ONLY)
{
g_warning ("Failed to get construct only property "
"%s of %s with value `%s'",
prop->name, object_name, prop->data);
continue;
}
/* Delay setting property */
property = g_slice_new (DelayedProperty);
property->object = g_strdup (object_name);
property->name = g_strdup (prop->name);
property->value = g_strdup (prop->data);
builder->priv->delayed_properties =
g_slist_prepend (builder->priv->delayed_properties, property);
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 & filter_flags)
{
if (filtered_parameters)
g_array_append_val (*filtered_parameters, parameter);
}
else
{
if (parameters)
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,
GError **error)
{
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_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Unknown internal child: %s", childname);
}
return obj;
}
static inline void
object_set_name (GObject *object, const gchar *name)
{
if (GTK_IS_BUILDABLE (object))
gtk_buildable_set_name (GTK_BUILDABLE (object), name);
else
g_object_set_data_full (object, "gtk-builder-name", g_strdup (name), g_free);
}
void
_gtk_builder_add_object (GtkBuilder *builder,
const gchar *id,
GObject *object)
{
object_set_name (object, id);
g_hash_table_insert (builder->priv->objects, g_strdup (id), g_object_ref (object));
}
GObject *
_gtk_builder_construct (GtkBuilder *builder,
ObjectInfo *info,
GError **error)
{
GArray *parameters, *construct_parameters;
GType object_type;
GObject *obj;
int i;
GtkBuildableIface *iface;
gboolean custom_set_property;
GtkBuildable *buildable;
GParamFlags param_filter_flags;
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_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Invalid object type `%s'",
info->class_name);
return NULL;
}
else if (builder->priv->template_type != 0 &&
g_type_is_a (object_type, builder->priv->template_type))
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_OBJECT_TYPE_REFUSED,
"Refused to build object of type `%s' because it "
"conforms to the template type `%s', avoiding infinite recursion.",
info->class_name, g_type_name (builder->priv->template_type));
return NULL;
}
/* If there is a manual constructor (like UIManager), or if this is a
* reference to an internal child, then we filter out construct-only
* and warn that they cannot be set.
*
* Otherwise if we are calling g_object_newv(), we want to pass
* both G_PARAM_CONSTRUCT and G_PARAM_CONSTRUCT_ONLY to the
* object's constructor.
*
* Passing all construct properties to g_object_newv() slightly
* improves performance as the construct properties will only be set once.
*/
if (info->constructor ||
(info->parent && ((ChildInfo*)info->parent)->internal_child != NULL))
param_filter_flags = G_PARAM_CONSTRUCT_ONLY;
else
param_filter_flags = G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY;
gtk_builder_get_parameters (builder, object_type,
info->id,
info->properties,
param_filter_flags,
&parameters,
&construct_parameters);
if (info->constructor)
{
GObject *constructor;
constructor = gtk_builder_get_object (builder, info->constructor);
if (constructor == NULL)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Unknown object constructor for %s: %s",
info->id,
info->constructor);
g_array_free (parameters, TRUE);
g_array_free (construct_parameters, TRUE);
return NULL;
}
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, error);
if (!obj)
{
g_array_free (parameters, TRUE);
g_array_free (construct_parameters, TRUE);
return NULL;
}
if (construct_parameters->len)
g_warning ("Can't pass in construct-only parameters to %s", childname);
g_object_ref (obj);
}
else
{
obj = g_object_newv (object_type,
construct_parameters->len,
(GParameter *)construct_parameters->data);
/* No matter what, make sure we have a reference.
*
* If it's an initially unowned object, sink it.
* If it's not initially unowned then we have the reference already.
*
* In the case that this is a window it will be sunk already and
* this is effectively a call to g_object_ref(). That's what
* we want.
*/
if (G_IS_INITIALLY_UNOWNED (obj))
g_object_ref_sink (obj);
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_get_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);
/* put it in the hash table. */
_gtk_builder_add_object (builder, info->id, obj);
/* we already own a reference to obj. */
g_object_unref (obj);
return obj;
}
void
_gtk_builder_apply_properties (GtkBuilder *builder,
ObjectInfo *info,
GError **error)
{
GArray *parameters;
GType object_type;
GtkBuildableIface *iface;
GtkBuildable *buildable;
gboolean custom_set_property;
gint i;
g_assert (info->object != NULL);
g_assert (info->class_name != NULL);
object_type = gtk_builder_get_type_from_name (builder, info->class_name);
/* Fetch all properties that are not construct-only */
gtk_builder_get_parameters (builder, object_type,
info->id,
info->properties,
G_PARAM_CONSTRUCT_ONLY,
&parameters, NULL);
custom_set_property = FALSE;
buildable = NULL;
iface = NULL;
if (GTK_IS_BUILDABLE (info->object))
{
buildable = GTK_BUILDABLE (info->object);
iface = GTK_BUILDABLE_GET_IFACE (info->object);
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 (info->object, param->name, &param->value);
#if G_ENABLE_DEBUG
if (gtk_get_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);
}
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",
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;
}
void
_gtk_builder_add_signals (GtkBuilder *builder,
GSList *signals)
{
builder->priv->signals = g_slist_concat (builder->priv->signals,
g_slist_copy (signals));
}
static void
gtk_builder_apply_delayed_properties (GtkBuilder *builder)
{
GSList *l, *props;
DelayedProperty *property;
GObject *object;
GType object_type;
GObjectClass *oclass;
GParamSpec *pspec;
/* take the list over from the builder->priv.
*
* g_slist_reverse does not copy the list, so the list now
* belongs to us (and we free it at the end of this function).
*/
props = g_slist_reverse (builder->priv->delayed_properties);
builder->priv->delayed_properties = NULL;
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", 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", 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)
{
gtk_builder_apply_delayed_properties (builder);
}
/**
* gtk_builder_new:
*
* Creates a new empty builder object.
*
* This function is only useful if you intend to make multiple calls to
* gtk_builder_add_from_file(), gtk_builder_add_from_resource() or
* gtk_builder_add_from_string() in order to merge multiple UI
* descriptions into a single builder.
*
* Most users will probably want to use gtk_builder_new_from_file(),
* gtk_builder_new_from_resource() or gtk_builder_new_from_string().
*
* Return value: a new (empty) #GtkBuilder 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: (allow-none): return location for an error, or %NULL
*
* Parses a file containing a <link linkend="BUILDER-UI">GtkBuilder
* UI definition</link> and merges it with the current contents of @builder.
*
* Most users will probably want to use gtk_builder_new_from_file().
*
* Upon errors 0 will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR, #G_MARKUP_ERROR or #G_FILE_ERROR
* domain.
*
* It's not really reasonable to attempt to handle failures of this
* call. You should not use this function with untrusted files (ie:
* files that are not part of your application). Broken #GtkBuilder
* files can easily crash your program, and it's possible that memory
* was leaked leading up to the reported failure. The only reasonable
* thing to do when an error is detected is to call g_error().
*
* 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)
{
gchar *buffer;
gsize length;
GError *tmp_error;
g_return_val_if_fail (GTK_IS_BUILDER (builder), 0);
g_return_val_if_fail (filename != NULL, 0);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
tmp_error = NULL;
if (!g_file_get_contents (filename, &buffer, &length, &tmp_error))
{
g_propagate_error (error, tmp_error);
return 0;
}
g_free (builder->priv->filename);
g_free (builder->priv->resource_prefix);
builder->priv->filename = g_strdup (filename);
builder->priv->resource_prefix = NULL;
_gtk_builder_parser_parse_buffer (builder, filename,
buffer, length,
NULL,
&tmp_error);
g_free (buffer);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
return 1;
}
/**
* gtk_builder_add_objects_from_file:
* @builder: a #GtkBuilder
* @filename: the name of the file to parse
* @object_ids: (array zero-terminated=1) (element-type utf8): nul-terminated array of objects to build
* @error: (allow-none): return location for an error, or %NULL
*
* Parses a file containing a <link linkend="BUILDER-UI">GtkBuilder
* UI definition</link> building only the requested objects and merges
* them with the current contents of @builder.
*
* Upon errors 0 will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR, #G_MARKUP_ERROR or #G_FILE_ERROR
* domain.
*
* <note><para>
* If you are adding an object that depends on an object that is not
* its child (for instance a #GtkTreeView that depends on its
* #GtkTreeModel), you have to explicitely list all of them in @object_ids.
* </para></note>
*
* Returns: A positive value on success, 0 if an error occurred
*
* Since: 2.14
**/
guint
gtk_builder_add_objects_from_file (GtkBuilder *builder,
const gchar *filename,
gchar **object_ids,
GError **error)
{
gchar *buffer;
gsize length;
GError *tmp_error;
g_return_val_if_fail (GTK_IS_BUILDER (builder), 0);
g_return_val_if_fail (filename != NULL, 0);
g_return_val_if_fail (object_ids != NULL && object_ids[0] != NULL, 0);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
tmp_error = NULL;
if (!g_file_get_contents (filename, &buffer, &length, &tmp_error))
{
g_propagate_error (error, tmp_error);
return 0;
}
g_free (builder->priv->filename);
g_free (builder->priv->resource_prefix);
builder->priv->filename = g_strdup (filename);
builder->priv->resource_prefix = NULL;
_gtk_builder_parser_parse_buffer (builder, filename,
buffer, length,
object_ids,
&tmp_error);
g_free (buffer);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
return 1;
}
/* Main private entry point for building composite container
* components from template XML
*/
guint
_gtk_builder_extend_with_template (GtkBuilder *builder,
GtkWidget *widget,
GType template_type,
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 (GTK_IS_WIDGET (widget), 0);
g_return_val_if_fail (g_type_name (template_type) != NULL, 0);
g_return_val_if_fail (g_type_is_a (G_OBJECT_TYPE (widget), template_type), 0);
g_return_val_if_fail (buffer && buffer[0], 0);
tmp_error = NULL;
g_free (builder->priv->filename);
g_free (builder->priv->resource_prefix);
builder->priv->filename = g_strdup (".");
builder->priv->resource_prefix = NULL;
builder->priv->template_type = template_type;
gtk_builder_expose_object (builder, g_type_name (template_type), G_OBJECT (widget));
_gtk_builder_parser_parse_buffer (builder, "<input>",
buffer, length,
NULL,
&tmp_error);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
return 1;
}
/**
* gtk_builder_add_from_resource:
* @builder: a #GtkBuilder
* @resource_path: the path of the resource file to parse
* @error: (allow-none): return location for an error, or %NULL
*
* Parses a resource file containing a <link linkend="BUILDER-UI">GtkBuilder
* UI definition</link> and merges it with the current contents of @builder.
*
* Most users will probably want to use gtk_builder_new_from_resource().
*
* Upon errors 0 will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR, #G_MARKUP_ERROR or #G_RESOURCE_ERROR
* domain.
*
* It's not really reasonable to attempt to handle failures of this
* call. The only reasonable thing to do when an error is detected is
* to call g_error().
*
* Returns: A positive value on success, 0 if an error occurred
*
* Since: 3.4
**/
guint
gtk_builder_add_from_resource (GtkBuilder *builder,
const gchar *resource_path,
GError **error)
{
GError *tmp_error;
GBytes *data;
char *filename_for_errors;
char *slash;
g_return_val_if_fail (GTK_IS_BUILDER (builder), 0);
g_return_val_if_fail (resource_path != NULL, 0);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
tmp_error = NULL;
data = g_resources_lookup_data (resource_path, 0, &tmp_error);
if (data == NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
g_free (builder->priv->filename);
g_free (builder->priv->resource_prefix);
builder->priv->filename = g_strdup (".");
slash = strrchr (resource_path, '/');
if (slash != NULL)
builder->priv->resource_prefix =
g_strndup (resource_path, slash - resource_path + 1);
else
builder->priv->resource_prefix =
g_strdup ("/");
filename_for_errors = g_strconcat ("<resource>", resource_path, NULL);
_gtk_builder_parser_parse_buffer (builder, filename_for_errors,
g_bytes_get_data (data, NULL), g_bytes_get_size (data),
NULL,
&tmp_error);
g_free (filename_for_errors);
g_bytes_unref (data);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
return 1;
}
/**
* gtk_builder_add_objects_from_resource:
* @builder: a #GtkBuilder
* @resource_path: the path of the resource file to parse
* @object_ids: (array zero-terminated=1) (element-type utf8): nul-terminated array of objects to build
* @error: (allow-none): return location for an error, or %NULL
*
* Parses a resource file containing a <link linkend="BUILDER-UI">GtkBuilder
* UI definition</link> building only the requested objects and merges
* them with the current contents of @builder.
*
* Upon errors 0 will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR, #G_MARKUP_ERROR or #G_RESOURCE_ERROR
* domain.
*
* <note><para>
* If you are adding an object that depends on an object that is not
* its child (for instance a #GtkTreeView that depends on its
* #GtkTreeModel), you have to explicitely list all of them in @object_ids.
* </para></note>
*
* Returns: A positive value on success, 0 if an error occurred
*
* Since: 3.4
**/
guint
gtk_builder_add_objects_from_resource (GtkBuilder *builder,
const gchar *resource_path,
gchar **object_ids,
GError **error)
{
GError *tmp_error;
GBytes *data;
char *filename_for_errors;
char *slash;
g_return_val_if_fail (GTK_IS_BUILDER (builder), 0);
g_return_val_if_fail (resource_path != NULL, 0);
g_return_val_if_fail (object_ids != NULL && object_ids[0] != NULL, 0);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
tmp_error = NULL;
data = g_resources_lookup_data (resource_path, 0, &tmp_error);
if (data == NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
g_free (builder->priv->filename);
g_free (builder->priv->resource_prefix);
builder->priv->filename = g_strdup (".");
slash = strrchr (resource_path, '/');
if (slash != NULL)
builder->priv->resource_prefix =
g_strndup (resource_path, slash - resource_path + 1);
else
builder->priv->resource_prefix =
g_strdup ("/");
filename_for_errors = g_strconcat ("<resource>", resource_path, NULL);
_gtk_builder_parser_parse_buffer (builder, filename_for_errors,
g_bytes_get_data (data, NULL), g_bytes_get_size (data),
object_ids,
&tmp_error);
g_free (filename_for_errors);
g_bytes_unref (data);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
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: (allow-none): return location for an error, or %NULL
*
* Parses a string containing a <link linkend="BUILDER-UI">GtkBuilder
* UI definition</link> and merges it with the current contents of @builder.
*
* Most users will probably want to use gtk_builder_new_from_string().
*
* Upon errors 0 will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR or #G_MARKUP_ERROR domain.
*
* It's not really reasonable to attempt to handle failures of this
* call. The only reasonable thing to do when an error is detected is
* to call g_error().
*
* 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);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
tmp_error = NULL;
g_free (builder->priv->filename);
g_free (builder->priv->resource_prefix);
builder->priv->filename = g_strdup (".");
builder->priv->resource_prefix = NULL;
_gtk_builder_parser_parse_buffer (builder, "<input>",
buffer, length,
NULL,
&tmp_error);
if (tmp_error != NULL)
{
g_propagate_error (error, tmp_error);
return 0;
}
return 1;
}
/**
* gtk_builder_add_objects_from_string:
* @builder: a #GtkBuilder
* @buffer: the string to parse
* @length: the length of @buffer (may be -1 if @buffer is nul-terminated)
* @object_ids: (array zero-terminated=1) (element-type utf8): nul-terminated array of objects to build
* @error: (allow-none): return location for an error, or %NULL
*
* Parses a string containing a <link linkend="BUILDER-UI">GtkBuilder
* UI definition</link> building only the requested objects and merges
* them with the current contents of @builder.
*
* Upon errors 0 will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR or #G_MARKUP_ERROR domain.
*
* <note><para>
* If you are adding an object that depends on an object that is not
* its child (for instance a #GtkTreeView that depends on its
* #GtkTreeModel), you have to explicitely list all of them in @object_ids.
* </para></note>
*
* Returns: A positive value on success, 0 if an error occurred
*
* Since: 2.14
**/
guint
gtk_builder_add_objects_from_string (GtkBuilder *builder,
const gchar *buffer,
gsize length,
gchar **object_ids,
GError **error)
{
GError *tmp_error;
g_return_val_if_fail (GTK_IS_BUILDER (builder), 0);
g_return_val_if_fail (buffer != NULL, 0);
g_return_val_if_fail (object_ids != NULL && object_ids[0] != NULL, 0);
g_return_val_if_fail (error == NULL || *error == NULL, 0);
tmp_error = NULL;
g_free (builder->priv->filename);
g_free (builder->priv->resource_prefix);
builder->priv->filename = g_strdup (".");
builder->priv->resource_prefix = NULL;
_gtk_builder_parser_parse_buffer (builder, "<input>",
buffer, length,
object_ids,
&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. Note that this function does not
* increment the reference count of the returned object.
*
* Return value: (transfer none): 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. Note that
* this function does not increment the reference counts of the returned
* objects.
*
* Return value: (element-type GObject) (transfer container): a newly-allocated #GSList containing all the objects
* constructed by the #GtkBuilder instance. It should be freed by
* g_slist_free()
*
* 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: (allow-none): the translation domain or %NULL
*
* Sets the translation domain of @builder.
* See #GtkBuilder:translation-domain.
*
* 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 of @builder.
*
* 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;
}
/**
* gtk_builder_expose_object:
* @builder: a #GtkBuilder
* @name: the name of the object exposed to the builder
* @object: the object to expose
*
* Add @object to the @builder object pool so it can be referenced just like any
* other object built by builder.
*
* Since: 3.8
**/
void
gtk_builder_expose_object (GtkBuilder *builder,
const gchar *name,
GObject *object)
{
g_return_if_fail (GTK_IS_BUILDER (builder));
g_return_if_fail (name && name[0]);
g_return_if_fail (gtk_builder_get_object (builder, name) == NULL);
object_set_name (object, name);
g_hash_table_insert (builder->priv->objects,
g_strdup (name),
g_object_ref (object));
}
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;
func = gtk_builder_lookup_callback_symbol (builder, handler_name);
if (!func)
{
/* Only error out for missing GModule support if we've not
* found the symbols explicitly added with gtk_builder_add_callback_symbol()
*/
if (args->module == NULL)
g_error ("gtk_builder_connect_signals() requires working GModule");
if (!g_module_symbol (args->module, handler_name, (gpointer)&func))
{
g_warning ("Could not find signal handler '%s'. Did you compile with -rdynamic?", 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 symbols explicitly added to @builder with prior calls to
* gtk_builder_add_callback_symbol(). In the case that symbols are not
* explicitly added; 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 can only be called once, subsequent calls will do nothing.
*
* Note that unless gtk_builder_add_callback_symbol() is called for
* all signal callbacks which are referenced by the loaded XML, this
* function will require that #GModule be supported on the platform.
*
* If you rely on #GModule support to lookup callbacks in the symbol table,
* the following details should be noted:
*
* When compiling applications for Windows, you must declare signal callbacks
* with #G_MODULE_EXPORT, or they will not be put in the symbol table.
* On Linux and Unices, this is not necessary; applications should instead
* be compiled with the -Wl,--export-dynamic CFLAGS, and linked against
* gmodule-export-2.0.
*
* Since: 2.12
**/
void
gtk_builder_connect_signals (GtkBuilder *builder,
gpointer user_data)
{
connect_args *args;
g_return_if_fail (GTK_IS_BUILDER (builder));
args = g_slice_new0 (connect_args);
args->data = user_data;
if (g_module_supported ())
args->module = g_module_open (NULL, G_MODULE_BIND_LAZY);
gtk_builder_connect_signals_full (builder,
gtk_builder_connect_signals_default,
args);
if (args->module)
g_module_close (args->module);
g_slice_free (connect_args, args);
}
/**
* GtkBuilderConnectFunc:
* @builder: a #GtkBuilder
* @object: object to connect a signal to
* @signal_name: name of the signal
* @handler_name: name of the handler
* @connect_object: a #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. Note that this function can only be called once,
* subsequent calls will do nothing.
*
* Since: 2.12
*/
/**
* gtk_builder_connect_signals_full:
* @builder: a #GtkBuilder
* @func: (scope call): 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_connect_signals(), 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: (out): the #GValue to store the result in
* @error: (allow-none): return location for an error, or %NULL
*
* 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, #GdkRGBA and
* #GtkAdjustment type values. Support for #GtkWidget type values is
* still to come.
*
* Upon errors %FALSE will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR domain.
*
* Returns: %TRUE on success
*
* Since: 2.12
*/
gboolean
gtk_builder_value_from_string (GtkBuilder *builder,
GParamSpec *pspec,
const gchar *string,
GValue *value,
GError **error)
{
g_return_val_if_fail (GTK_IS_BUILDER (builder), FALSE);
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
g_return_val_if_fail (string != NULL, FALSE);
g_return_val_if_fail (value != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
/*
* 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;
}
/*
* GParamSpecVariant can specify a GVariantType which can help with
* parsing, so we need to take care of that here.
*/
if (G_IS_PARAM_SPEC_VARIANT (pspec))
{
GParamSpecVariant *variant_pspec = G_PARAM_SPEC_VARIANT (pspec);
const GVariantType *type;
GVariant *variant;
g_value_init (value, G_TYPE_VARIANT);
/* The GVariant parser doesn't deal with indefinite types */
if (g_variant_type_is_definite (variant_pspec->type))
type = variant_pspec->type;
else
type = NULL;
variant = g_variant_parse (type, string, NULL, NULL, error);
if (variant == NULL)
return FALSE;
g_value_take_variant (value, variant);
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: (out): the #GValue to store the result in
* @error: (allow-none): return location for an error, or %NULL
*
* Like gtk_builder_value_from_string(), this function demarshals
* a value from a string, but takes a #GType instead of #GParamSpec.
* This function calls g_value_init() on the @value argument, so it
* need not be initialised beforehand.
*
* Upon errors %FALSE will be returned and @error will be assigned a
* #GError from the #GTK_BUILDER_ERROR domain.
*
* 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_return_val_if_fail (error == NULL || *error == NULL, FALSE);
g_value_init (value, type);
switch (G_TYPE_FUNDAMENTAL (type))
{
case G_TYPE_CHAR:
g_value_set_schar (value, string[0]);
break;
case G_TYPE_UCHAR:
g_value_set_uchar (value, (guchar)string[0]);
break;
case G_TYPE_BOOLEAN:
{
gboolean b;
if (!_gtk_builder_boolean_from_string (string, &b, error))
{
ret = FALSE;
break;
}
g_value_set_boolean (value, b);
break;
}
case G_TYPE_INT:
case G_TYPE_LONG:
{
long l;
gchar *endptr = NULL;
errno = 0;
l = g_ascii_strtoll (string, &endptr, 0);
if (errno || endptr == string)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Could not parse integer `%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 = NULL;
errno = 0;
ul = g_ascii_strtoull (string, &endptr, 0);
if (errno || endptr == string)
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Could not parse unsigned integer `%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:
{
gint enum_value;
if (!_gtk_builder_enum_from_string (type, string, &enum_value, error))
{
ret = FALSE;
break;
}
g_value_set_enum (value, enum_value);
break;
}
case G_TYPE_FLAGS:
{
guint flags_value;
if (!_gtk_builder_flags_from_string (type, string, &flags_value, error))
{
ret = FALSE;
break;
}
g_value_set_flags (value, flags_value);
break;
}
case G_TYPE_FLOAT:
case G_TYPE_DOUBLE:
{
gdouble d;
gchar *endptr = NULL;
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_VARIANT:
{
GVariant *variant;
variant = g_variant_parse (NULL, string, NULL, NULL, error);
if (value != NULL)
g_value_take_variant (value, variant);
else
ret = FALSE;
}
break;
case G_TYPE_BOXED:
if (G_VALUE_HOLDS (value, GDK_TYPE_COLOR))
{
GdkColor color = { 0, };
if (gdk_color_parse (string, &color))
g_value_set_boxed (value, &color);
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, GDK_TYPE_RGBA))
{
GdkRGBA rgba = { 0 };
if (gdk_rgba_parse (&rgba, string))
g_value_set_boxed (value, &rgba);
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Could not parse RGBA color '%s'",
string);
ret = FALSE;
}
}
else if (G_VALUE_HOLDS (value, G_TYPE_STRV))
{
gchar **vector = g_strsplit (string, "\n", 0);
g_value_take_boxed (value, vector);
}
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Could not parse '%s' as a %s",
string, G_VALUE_TYPE_NAME (value));
ret = FALSE;
}
break;
case G_TYPE_OBJECT:
if (G_VALUE_HOLDS (value, GDK_TYPE_PIXBUF))
{
gchar *filename;
GError *tmp_error = NULL;
GdkPixbuf *pixbuf = NULL;
if (gtk_builder_get_object (builder, string))
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Could not load image '%s': "
" '%s' is already used as object id",
string, string);
return FALSE;
}
filename = _gtk_builder_get_resource_path (builder, string);
if (filename != NULL)
{
GInputStream *stream = g_resources_open_stream (filename, 0, &tmp_error);
if (stream != NULL)
{
pixbuf = gdk_pixbuf_new_from_stream (stream, NULL, &tmp_error);
g_object_unref (stream);
}
}
else
{
filename = _gtk_builder_get_absolute_filename (builder, string);
pixbuf = gdk_pixbuf_new_from_file (filename, &tmp_error);
}
if (pixbuf == NULL)
{
GtkIconTheme *theme;
g_warning ("Could not load image '%s': %s",
string, tmp_error->message);
g_error_free (tmp_error);
/* fall back to a missing image */
theme = gtk_icon_theme_get_default ();
pixbuf = gtk_icon_theme_load_icon (theme,
"image-missing",
16,
GTK_ICON_LOOKUP_USE_BUILTIN,
NULL);
}
if (pixbuf)
{
g_value_set_object (value, pixbuf);
g_object_unref (G_OBJECT (pixbuf));
}
g_free (filename);
ret = TRUE;
}
else
ret = FALSE;
break;
default:
ret = FALSE;
break;
}
/* Catch unassigned error for object types as well as any unsupported types.
* While parsing GtkBuilder; object types are deserialized
* without calling gtk_builder_value_from_string_type().
*/
if (!ret && error && *error == NULL)
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Unsupported GType `%s'", g_type_name (type));
return ret;
}
gboolean
_gtk_builder_enum_from_string (GType type,
const gchar *string,
gint *enum_value,
GError **error)
{
GEnumClass *eclass;
GEnumValue *ev;
gchar *endptr;
gint value;
gboolean ret;
g_return_val_if_fail (G_TYPE_IS_ENUM (type), FALSE);
g_return_val_if_fail (string != NULL, FALSE);
ret = TRUE;
endptr = NULL;
errno = 0;
value = g_ascii_strtoull (string, &endptr, 0);
if (errno == 0 && endptr != string) /* parsed a number */
*enum_value = value;
else
{
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)
*enum_value = ev->value;
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Could not parse enum: `%s'",
string);
ret = FALSE;
}
g_type_class_unref (eclass);
}
return ret;
}
gboolean
_gtk_builder_flags_from_string (GType type,
const gchar *string,
guint *flags_value,
GError **error)
{
GFlagsClass *fclass;
gchar *endptr, *prevptr;
guint i, j, value;
gchar *flagstr;
GFlagsValue *fv;
const gchar *flag;
gunichar ch;
gboolean eos, ret;
g_return_val_if_fail (G_TYPE_IS_FLAGS (type), FALSE);
g_return_val_if_fail (string != 0, FALSE);
ret = TRUE;
endptr = NULL;
errno = 0;
value = g_ascii_strtoull (string, &endptr, 0);
if (errno == 0 && endptr != string) /* parsed a number */
*flags_value = value;
else
{
fclass = g_type_class_ref (type);
flagstr = g_strdup (string);
for (value = 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)
value |= fv->value;
else
{
g_set_error (error,
GTK_BUILDER_ERROR,
GTK_BUILDER_ERROR_INVALID_VALUE,
"Unknown flag: `%s'",
flag);
ret = FALSE;
break;
}
}
if (eos)
{
*flags_value = value;
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
*
* Looks up a type by name, using the virtual function that
* #GtkBuilder has for that purpose. This is mainly used when
* implementing the #GtkBuildable interface on a type.
*
* 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);
}
GQuark
gtk_builder_error_quark (void)
{
return g_quark_from_static_string ("gtk-builder-error-quark");
}
gchar *
_gtk_builder_get_resource_path (GtkBuilder *builder, const gchar *string)
{
if (g_str_has_prefix (string, "resource:///"))
return g_uri_unescape_string (string + 11, "/");
if (g_path_is_absolute (string) ||
builder->priv->resource_prefix == NULL)
return NULL;
return g_build_path ("/", builder->priv->resource_prefix, string, NULL);
}
gchar *
_gtk_builder_get_absolute_filename (GtkBuilder *builder, const gchar *string)
{
gchar *filename;
gchar *dirname = NULL;
if (g_path_is_absolute (string))
return g_strdup (string);
if (builder->priv->filename &&
strcmp (builder->priv->filename, ".") != 0)
{
dirname = g_path_get_dirname (builder->priv->filename);
if (strcmp (dirname, ".") == 0)
{
g_free (dirname);
dirname = g_get_current_dir ();
}
}
else
dirname = g_get_current_dir ();
filename = g_build_filename (dirname, string, NULL);
g_free (dirname);
return filename;
}
GType
_gtk_builder_get_template_type (GtkBuilder *builder)
{
return builder->priv->template_type;
}
/**
* gtk_builder_add_callback_symbol:
* @builder: a #GtkBuilder
* @callback_name: The name of the callback, as expected in the XML
* @callback_symbol: (scope async): The callback pointer
*
* Adds the @callback_symbol to the scope of @builder under the given @callback_name.
*
* Using this function overrides the behavior of gtk_builder_connect_signals()
* for any callback symbols that are added. Using this method allows for better
* encapsulation as it does not require that callback symbols be declared in
* the global namespace.
*
* Since: 3.10
*/
void
gtk_builder_add_callback_symbol (GtkBuilder *builder,
const gchar *callback_name,
GCallback callback_symbol)
{
g_return_if_fail (GTK_IS_BUILDER (builder));
g_return_if_fail (callback_name && callback_name[0]);
g_return_if_fail (callback_symbol != NULL);
if (!builder->priv->callbacks)
builder->priv->callbacks = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
g_hash_table_insert (builder->priv->callbacks, g_strdup (callback_name), callback_symbol);
}
/**
* gtk_builder_add_callback_symbols:
* @builder: a #GtkBuilder
* @first_callback_name: The name of the callback, as expected in the XML
* @first_callback_symbol: (scope async): The callback pointer
* @...: A list of callback name and callback symbol pairs terminated with %NULL
*
* A convenience function to add many callbacks instead of calling
* gtk_builder_add_callback_symbol() for each symbol.
*
* Since: 3.10
*/
void
gtk_builder_add_callback_symbols (GtkBuilder *builder,
const gchar *first_callback_name,
GCallback first_callback_symbol,
...)
{
va_list var_args;
const gchar *callback_name;
GCallback callback_symbol;
g_return_if_fail (GTK_IS_BUILDER (builder));
g_return_if_fail (first_callback_name && first_callback_name[0]);
g_return_if_fail (first_callback_symbol != NULL);
callback_name = first_callback_name;
callback_symbol = first_callback_symbol;
va_start (var_args, first_callback_symbol);
do {
gtk_builder_add_callback_symbol (builder, callback_name, callback_symbol);
callback_name = va_arg (var_args, const gchar*);
if (callback_name)
callback_symbol = va_arg (var_args, GCallback);
} while (callback_name != NULL);
va_end (var_args);
}
/**
* gtk_builder_lookup_callback_symbol:
* @builder: a #GtkBuilder
* @callback_name: The name of the callback
*
* Fetches a symbol previously added to @builder
* with gtk_builder_add_callback_symbols()
*
* This function is intended for possible use in language bindings
* or for any case that one might be cusomizing signal connections
* using gtk_builder_connect_signals_full()
*
* Returns: The callback symbol in @builder for @callback_name, or %NULL
*
* Since: 3.10
*/
GCallback
gtk_builder_lookup_callback_symbol (GtkBuilder *builder,
const gchar *callback_name)
{
g_return_val_if_fail (GTK_IS_BUILDER (builder), NULL);
g_return_val_if_fail (callback_name && callback_name[0], NULL);
if (!builder->priv->callbacks)
return NULL;
return g_hash_table_lookup (builder->priv->callbacks, callback_name);
}
/**
* gtk_builder_new_from_file:
* @filename: filename of user interface description file
*
* Builds the <link linkend="BUILDER-UI">GtkBuilder UI definition</link>
* in the file @filename.
*
* If there is an error opening the file or parsing the description then
* the program will be aborted. You should only ever attempt to parse
* user interface descriptions that are shipped as part of your program.
*
* Returns: a #Gtkbuilder containing the described interface
*
* Since: 3.10
**/
GtkBuilder *
gtk_builder_new_from_file (const gchar *filename)
{
GError *error = NULL;
GtkBuilder *builder;
builder = gtk_builder_new ();
if (!gtk_builder_add_from_file (builder, filename, &error))
g_error ("failed to add UI: %s", error->message);
return builder;
}
/**
* gtk_builder_new_from_resource:
* @resource_path: a #GResource resource path
*
* Builds the <link linkend="BUILDER-UI">GtkBuilder UI definition</link>
* at @resource_path.
*
* If there is an error locating the resurce or parsing the description
* then the program will be aborted.
*
* Returns: a #Gtkbuilder containing the described interface
*
* Since: 3.10
**/
GtkBuilder *
gtk_builder_new_from_resource (const gchar *resource_path)
{
GError *error = NULL;
GtkBuilder *builder;
builder = gtk_builder_new ();
if (!gtk_builder_add_from_resource (builder, resource_path, &error))
g_error ("failed to add UI: %s", error->message);
return builder;
}
/**
* gtk_builder_new_from_string:
* @string: a user interface (XML) description
* @length: the length of @string, or -1
*
* Builds the user interface described by @string (in the <link
* linkend="BUILDER-UI">GtkBuilder UI definition</link> format).
*
* If @string is %NULL-terminated then @length should be -1. If @length
* is not -1 then it is the length of @string.
*
* If there is an error parsing @string then the program will be
* aborted. You should not attempt to parse user interface description
* from untrusted sources.
*
* Returns: a #Gtkbuilder containing the interface described by @string
*
* Since: 3.10
**/
GtkBuilder *
gtk_builder_new_from_string (const gchar *string,
gssize length)
{
GError *error = NULL;
GtkBuilder *builder;
builder = gtk_builder_new ();
if (!gtk_builder_add_from_string (builder, string, length, &error))
g_error ("failed to add UI: %s", error->message);
return builder;
}
/**
* gtk_builder_set_application:
* @builder: a #GtkBuilder
* @application: a #GtkApplication
*
* Sets the application associated with @builder.
*
* You only need this function if there is more than one #GApplication
* in your process. @application cannot be %NULL.
*
* Since: 3.10
**/
void
gtk_builder_set_application (GtkBuilder *builder,
GtkApplication *application)
{
g_return_if_fail (GTK_IS_BUILDER (builder));
g_return_if_fail (GTK_IS_APPLICATION (application));
if (builder->priv->application)
g_object_unref (builder->priv->application);
builder->priv->application = g_object_ref (application);
}
/**
* gtk_builder_get_application:
* @builder: a #GtkBuilder
*
* Gets the #GtkApplication associated with the builder.
*
* The #GtkApplication is used for creating action proxies as requested
* from XML that the builder is loading.
*
* By default, the builder uses the default application: the one from
* g_application_get_default(). If you want to use another application
* for constructing proxies, use gtk_builder_set_application().
*
* Returns: (transfer none): the application being used by the builder,
* or %NULL
*
* Since: 3.10
**/
GtkApplication *
gtk_builder_get_application (GtkBuilder *builder)
{
g_return_val_if_fail (GTK_IS_BUILDER (builder), NULL);
if (!builder->priv->application)
{
GApplication *application;
application = g_application_get_default ();
if (application && GTK_IS_APPLICATION (application))
builder->priv->application = g_object_ref (GTK_APPLICATION (application));
}
return builder->priv->application;
}
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