forked from AuroraMiddleware/gtk
c6cedf608a
Now that the functions that wrap them have gone away from the public API, we need proper annotations for the virtual functions, otherwise languages will not have enough information on nullable arguments and ownership transfer.
337 lines
10 KiB
C
337 lines
10 KiB
C
/* gtkbuildable.c
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* Copyright (C) 2006-2007 Async Open Source,
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* Johan Dahlin <jdahlin@async.com.br>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* SECTION:gtkbuildable
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* @Short_description: Interface for objects that can be built by GtkBuilder
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* @Title: GtkBuildable
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*
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* GtkBuildable allows objects to extend and customize their deserialization
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* from [GtkBuilder UI descriptions][BUILDER-UI].
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* The interface includes methods for setting names and properties of objects,
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* parsing custom tags and constructing child objects.
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*
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* The GtkBuildable interface is implemented by all widgets and
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* many of the non-widget objects that are provided by GTK. The
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* main user of this interface is #GtkBuilder. There should be
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* very little need for applications to call any of these functions directly.
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*
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* An object only needs to implement this interface if it needs to extend the
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* #GtkBuilder format or run any extra routines at deserialization time.
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*/
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#include "config.h"
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#include "gtkbuildableprivate.h"
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#include "gtkintl.h"
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typedef GtkBuildableIface GtkBuildableInterface;
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G_DEFINE_INTERFACE (GtkBuildable, gtk_buildable, G_TYPE_OBJECT)
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static void
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gtk_buildable_default_init (GtkBuildableInterface *iface)
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{
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}
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/*< private >
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* gtk_buildable_set_buildable_id:
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* @buildable: a #GtkBuildable
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* @id: name to set
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*
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* Sets the ID of the @buildable object.
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*/
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void
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gtk_buildable_set_buildable_id (GtkBuildable *buildable,
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const char *id)
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{
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GtkBuildableIface *iface;
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g_return_if_fail (GTK_IS_BUILDABLE (buildable));
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g_return_if_fail (id != NULL);
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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if (iface->set_id)
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(* iface->set_id) (buildable, id);
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else
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g_object_set_data_full (G_OBJECT (buildable),
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"gtk-builder-id",
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g_strdup (id),
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g_free);
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}
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/**
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* gtk_buildable_get_buildable_id:
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* @buildable: a #GtkBuildable
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*
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* Gets the ID of the @buildable object.
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*
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* #GtkBuilder sets the name based on the
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* [GtkBuilder UI definition][BUILDER-UI]
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* used to construct the @buildable.
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*
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* Returns: the ID set with gtk_buildable_set_buildable_id()
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**/
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const char *
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gtk_buildable_get_buildable_id (GtkBuildable *buildable)
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{
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GtkBuildableIface *iface;
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g_return_val_if_fail (GTK_IS_BUILDABLE (buildable), NULL);
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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if (iface->get_id)
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return (* iface->get_id) (buildable);
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else
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return (const char *)g_object_get_data (G_OBJECT (buildable),
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"gtk-builder-id");
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}
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/*< private >
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* gtk_buildable_add_child:
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* @buildable: a #GtkBuildable
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* @builder: a #GtkBuilder
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* @child: child to add
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* @type: (nullable): kind of child or %NULL
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*
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* Adds a child to @buildable. @type is an optional string
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* describing how the child should be added.
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*/
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void
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gtk_buildable_add_child (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const char *type)
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{
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GtkBuildableIface *iface;
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g_return_if_fail (GTK_IS_BUILDABLE (buildable));
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g_return_if_fail (GTK_IS_BUILDER (builder));
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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g_return_if_fail (iface->add_child != NULL);
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(* iface->add_child) (buildable, builder, child, type);
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}
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/*< private >
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* gtk_buildable_set_buildable_property:
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* @buildable: a #GtkBuildable
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* @builder: a #GtkBuilder
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* @name: name of property
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* @value: value of property
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*
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* Sets the property name @name to @value on the @buildable object.
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*/
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void
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gtk_buildable_set_buildable_property (GtkBuildable *buildable,
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GtkBuilder *builder,
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const char *name,
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const GValue *value)
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{
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GtkBuildableIface *iface;
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g_return_if_fail (GTK_IS_BUILDABLE (buildable));
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g_return_if_fail (GTK_IS_BUILDER (builder));
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g_return_if_fail (name != NULL);
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g_return_if_fail (value != NULL);
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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if (iface->set_buildable_property)
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(* iface->set_buildable_property) (buildable, builder, name, value);
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else
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g_object_set_property (G_OBJECT (buildable), name, value);
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}
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/*< private >
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* gtk_buildable_parser_finished:
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* @buildable: a #GtkBuildable
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* @builder: a #GtkBuilder
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*
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* Called when the builder finishes the parsing of a
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* [GtkBuilder UI definition][BUILDER-UI].
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* Note that this will be called once for each time
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* gtk_builder_add_from_file() or gtk_builder_add_from_string()
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* is called on a builder.
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*/
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void
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gtk_buildable_parser_finished (GtkBuildable *buildable,
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GtkBuilder *builder)
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{
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GtkBuildableIface *iface;
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g_return_if_fail (GTK_IS_BUILDABLE (buildable));
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g_return_if_fail (GTK_IS_BUILDER (builder));
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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if (iface->parser_finished)
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(* iface->parser_finished) (buildable, builder);
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}
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/*< private >
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* gtk_buildable_construct_child:
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* @buildable: A #GtkBuildable
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* @builder: #GtkBuilder used to construct this object
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* @name: name of child to construct
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*
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* Constructs a child of @buildable with the name @name.
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*
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* #GtkBuilder calls this function if a “constructor” has been
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* specified in the UI definition.
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*
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* Returns: (transfer full): the constructed child
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*/
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GObject *
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gtk_buildable_construct_child (GtkBuildable *buildable,
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GtkBuilder *builder,
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const char *name)
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{
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GtkBuildableIface *iface;
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g_return_val_if_fail (GTK_IS_BUILDABLE (buildable), NULL);
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g_return_val_if_fail (GTK_IS_BUILDER (builder), NULL);
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g_return_val_if_fail (name != NULL, NULL);
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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g_return_val_if_fail (iface->construct_child != NULL, NULL);
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return (* iface->construct_child) (buildable, builder, name);
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}
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/*< private >
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* gtk_buildable_custom_tag_start:
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* @buildable: a #GtkBuildable
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* @builder: a #GtkBuilder used to construct this object
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* @child: (allow-none): child object or %NULL for non-child tags
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* @tagname: name of tag
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* @parser: (out): a #GMarkupParser to fill in
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* @data: (out): return location for user data that will be passed in
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* to parser functions
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*
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* This is called for each unknown element under <child>.
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*
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* Returns: %TRUE if an object has a custom implementation, %FALSE
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* if it doesn't.
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*/
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gboolean
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gtk_buildable_custom_tag_start (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const char *tagname,
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GtkBuildableParser *parser,
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gpointer *data)
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{
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GtkBuildableIface *iface;
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g_return_val_if_fail (GTK_IS_BUILDABLE (buildable), FALSE);
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g_return_val_if_fail (GTK_IS_BUILDER (builder), FALSE);
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g_return_val_if_fail (tagname != NULL, FALSE);
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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g_return_val_if_fail (iface->custom_tag_start != NULL, FALSE);
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return (* iface->custom_tag_start) (buildable, builder, child,
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tagname, parser, data);
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}
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/*< private >
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* gtk_buildable_custom_tag_end:
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* @buildable: A #GtkBuildable
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* @builder: #GtkBuilder used to construct this object
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* @child: (allow-none): child object or %NULL for non-child tags
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* @tagname: name of tag
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* @data: user data that will be passed in to parser functions
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*
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* This is called at the end of each custom element handled by
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* the buildable.
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*/
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void
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gtk_buildable_custom_tag_end (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const char *tagname,
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gpointer data)
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{
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GtkBuildableIface *iface;
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g_return_if_fail (GTK_IS_BUILDABLE (buildable));
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g_return_if_fail (GTK_IS_BUILDER (builder));
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g_return_if_fail (tagname != NULL);
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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if (iface->custom_tag_end)
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(* iface->custom_tag_end) (buildable, builder, child, tagname, data);
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}
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/*< private >
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* gtk_buildable_custom_finished:
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* @buildable: a #GtkBuildable
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* @builder: a #GtkBuilder
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* @child: (allow-none): child object or %NULL for non-child tags
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* @tagname: the name of the tag
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* @data: user data created in custom_tag_start
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*
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* This is similar to gtk_buildable_parser_finished() but is
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* called once for each custom tag handled by the @buildable.
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*/
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void
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gtk_buildable_custom_finished (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const char *tagname,
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gpointer data)
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{
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GtkBuildableIface *iface;
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g_return_if_fail (GTK_IS_BUILDABLE (buildable));
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g_return_if_fail (GTK_IS_BUILDER (builder));
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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if (iface->custom_finished)
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(* iface->custom_finished) (buildable, builder, child, tagname, data);
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}
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/*< private >
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* gtk_buildable_get_internal_child:
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* @buildable: a #GtkBuildable
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* @builder: a #GtkBuilder
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* @childname: name of child
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*
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* Get the internal child called @childname of the @buildable object.
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*
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* Returns: (transfer none): the internal child of the buildable object
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*/
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GObject *
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gtk_buildable_get_internal_child (GtkBuildable *buildable,
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GtkBuilder *builder,
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const char *childname)
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{
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GtkBuildableIface *iface;
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g_return_val_if_fail (GTK_IS_BUILDABLE (buildable), NULL);
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g_return_val_if_fail (GTK_IS_BUILDER (builder), NULL);
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g_return_val_if_fail (childname != NULL, NULL);
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iface = GTK_BUILDABLE_GET_IFACE (buildable);
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if (!iface->get_internal_child)
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return NULL;
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return (* iface->get_internal_child) (buildable, builder, childname);
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}
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