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/*
* e-binding.h
*
* This program 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 of the License, or (at your option) version 3.
*
* This program 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 the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
/* This is a direct rip-off of Xfce's excellent ExoBinding API,
* which binds two GObject properties together. ExoBinding was
* written by Benedikt Meurer <benny@xfce.org>. */
#ifndef E_BINDING_H
#define E_BINDING_H
#include <gdk/gdk.h>
G_BEGIN_DECLS
typedef struct _EBinding EBinding;
typedef struct _EBindingBase EBindingBase;
typedef struct _EBindingLink EBindingLink;
typedef struct _EMutualBinding EMutualBinding;
typedef gboolean (*EBindingTransform) (const GValue *src_value,
GValue *dst_value,
gpointer user_data);
struct _EBindingBase {
GDestroyNotify destroy;
};
struct _EBindingLink {
GObject *dst_object;
GParamSpec *dst_pspec;
gulong dst_handler; /* only set for mutual bindings */
gulong handler;
EBindingTransform transform;
gpointer user_data;
};
struct _EBinding {
/*< private >*/
GObject *src_object;
EBindingBase base;
EBindingLink link;
};
struct _EMutualBinding {
/*< private >*/
EBindingBase base;
EBindingLink direct;
EBindingLink reverse;
};
EBinding * e_binding_new (gpointer src_object,
const gchar *src_property,
gpointer dst_object,
const gchar *dst_property);
EBinding * e_binding_new_full (gpointer src_object,
const gchar *src_property,
gpointer dst_object,
const gchar *dst_property,
EBindingTransform transform,
GDestroyNotify destroy_notify,
gpointer user_data);
EBinding * e_binding_new_with_negation (gpointer src_object,
const gchar *src_property,
gpointer dst_object,
const gchar *dst_property);
void e_binding_unbind (EBinding *binding);
EMutualBinding *e_mutual_binding_new (gpointer object1,
const gchar *property1,
gpointer object2,
const gchar *property2);
EMutualBinding *e_mutual_binding_new_full (gpointer object1,
const gchar *property1,
gpointer object2,
const gchar *property2,
EBindingTransform transform,
EBindingTransform reverse_transform,
GDestroyNotify destroy_notify,
gpointer user_data);
EMutualBinding *e_mutual_binding_new_with_negation
(gpointer object1,
const gchar *property1,
gpointer object2,
const gchar *property2);
void e_mutual_binding_unbind (EMutualBinding *binding);
/* Useful transformation functions */
gboolean e_binding_transform_color_to_string
(const GValue *src_value,
GValue *dst_value,
gpointer user_data);
gboolean e_binding_transform_string_to_color
(const GValue *src_value,
GValue *dst_value,
gpointer user_data);
G_END_DECLS
#endif /* E_BINDING_H */
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