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/*
* Copyright © 2019 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#ifndef __GTK_BUILDER_SCOPE_H__
#define __GTK_BUILDER_SCOPE_H__
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#include <gtk/gtktypes.h>
G_BEGIN_DECLS
#define GTK_TYPE_BUILDER_SCOPE (gtk_builder_scope_get_type ())
GDK_AVAILABLE_IN_ALL
G_DECLARE_INTERFACE (GtkBuilderScope, gtk_builder_scope, GTK, BUILDER_SCOPE, GObject)
/**
* GtkBuilderClosureFlags:
* @GTK_BUILDER_CLOSURE_SWAPPED: The closure should be created swapped. See
* g_cclosure_new_swap() for details.
*
* The list of flags that can be passed to gtk_builder_create_closure().
* New values may be added in the future for new features, so external
* implementations of GtkBuilderScopeInterface should test the flags for unknown
* values and raise a %GTK_BUILDER_ERROR_INVALID_ATTRIBUTE error when they
* encounter one.
*/
typedef enum { /*< prefix=GTK_BUILDER_CLOSURE >*/
GTK_BUILDER_CLOSURE_SWAPPED = (1 << 0)
} GtkBuilderClosureFlags;
/**
* GtkBuilderScopeInterface:
* @get_type_from_name: Try to lookup a #GType via the its name. See
* gtk_builder_get_type_from_name() for more details.
* The C implementation will use g_type_from_name() and if that fails try to guess the
* correct function name for registering the type and then use dlsym() to load it.
* The default implementation just tries g_type_from_name() and otherwise fails.
* @get_type_from_function: Try to lookup a #GType via the given function name, specified
* explicitly in a GtkBuilder file, like via the "type-func" attribute in the "<object>" tag.
* This function is very rarely used.
* The C implementation will use dlsym() and call the resulting function as a #GTypeFunc.
* The default implementation will fail and just return %G_TYPE_INVALID.
* @create_closure: Create a closure with the given arguments. See gtk_builder_create_closure()
* for more details on those.
* The C implementation will try to use dlsym() to locate the function name and then
* g_cclosure_new() to create a closure for the symbol.
* The default implementation just fails and returns %NULL.
*
* The virtual function table to implement for #GtkBuilderScope implementations.
* Default implementations for each function do exist, but they usually just fail,
* so it is suggested that implementations implement all of them.
*/
struct _GtkBuilderScopeInterface
{
/*< private >*/
GTypeInterface g_iface;
/*< public >*/
GType (* get_type_from_name) (GtkBuilderScope *self,
GtkBuilder *builder,
const char *type_name);
GType (* get_type_from_function) (GtkBuilderScope *self,
GtkBuilder *builder,
const char *function_name);
GClosure * (* create_closure) (GtkBuilderScope *self,
GtkBuilder *builder,
const char *function_name,
GtkBuilderClosureFlags flags,
GObject *object,
GError **error);
};
struct _GtkBuilderCScopeClass
{
GObjectClass parent_class;
};
#define GTK_TYPE_BUILDER_CSCOPE (gtk_builder_cscope_get_type ())
GDK_AVAILABLE_IN_ALL
G_DECLARE_DERIVABLE_TYPE (GtkBuilderCScope, gtk_builder_cscope, GTK, BUILDER_CSCOPE, GObject)
GDK_AVAILABLE_IN_ALL
GtkBuilderScope * gtk_builder_cscope_new (void);
GDK_AVAILABLE_IN_ALL
void gtk_builder_cscope_add_callback_symbol (GtkBuilderCScope *self,
const char *callback_name,
GCallback callback_symbol);
GDK_AVAILABLE_IN_ALL
void gtk_builder_cscope_add_callback_symbols (GtkBuilderCScope *self,
const char *first_callback_name,
GCallback first_callback_symbol,
...) G_GNUC_NULL_TERMINATED;
GDK_AVAILABLE_IN_ALL
GCallback gtk_builder_cscope_lookup_callback_symbol(GtkBuilderCScope *self,
const char *callback_name);
G_END_DECLS
#endif /* __GTK_BUILDER_SCOPE_H__ */
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