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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* MetaGroup property handling */
/*
* Copyright (C) 2002 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "x11/group-props.h"
#include <X11/Xatom.h>
#include "x11/group-private.h"
#include "x11/meta-x11-display-private.h"
#include "x11/xprops.h"
typedef void (* InitValueFunc) (MetaX11Display *x11_display,
Atom property,
MetaPropValue *value);
typedef void (* ReloadValueFunc) (MetaGroup *group,
MetaPropValue *value);
struct _MetaGroupPropHooks
{
Atom property;
InitValueFunc init_func;
ReloadValueFunc reload_func;
};
static void init_prop_value (MetaX11Display *x11_display,
Atom property,
MetaPropValue *value);
static void reload_prop_value (MetaGroup *group,
MetaPropValue *value);
static MetaGroupPropHooks *find_hooks (MetaX11Display *x11_display,
Atom property);
void
meta_group_reload_property (MetaGroup *group,
Atom property)
{
meta_group_reload_properties (group, &property, 1);
}
void
meta_group_reload_properties (MetaGroup *group,
const Atom *properties,
int n_properties)
{
int i;
MetaPropValue *values;
g_return_if_fail (properties != NULL);
g_return_if_fail (n_properties > 0);
values = g_new0 (MetaPropValue, n_properties);
i = 0;
while (i < n_properties)
{
init_prop_value (group->x11_display, properties[i], &values[i]);
++i;
}
meta_prop_get_values (group->x11_display,
group->group_leader,
values, n_properties);
i = 0;
while (i < n_properties)
{
reload_prop_value (group, &values[i]);
++i;
}
meta_prop_free_values (values, n_properties);
g_free (values);
}
/* Fill in the MetaPropValue used to get the value of "property" */
static void
init_prop_value (MetaX11Display *x11_display,
Atom property,
MetaPropValue *value)
{
MetaGroupPropHooks *hooks;
value->type = META_PROP_VALUE_INVALID;
value->atom = None;
hooks = find_hooks (x11_display, property);
if (hooks && hooks->init_func != NULL)
(* hooks->init_func) (x11_display, property, value);
}
static void
reload_prop_value (MetaGroup *group,
MetaPropValue *value)
{
MetaGroupPropHooks *hooks;
hooks = find_hooks (group->x11_display, value->atom);
if (hooks && hooks->reload_func != NULL)
(* hooks->reload_func) (group, value);
}
static void
init_wm_client_machine (MetaX11Display *x11_display,
Atom property,
MetaPropValue *value)
{
value->type = META_PROP_VALUE_STRING;
value->atom = x11_display->atom_WM_CLIENT_MACHINE;
}
static void
reload_wm_client_machine (MetaGroup *group,
MetaPropValue *value)
{
g_free (group->wm_client_machine);
group->wm_client_machine = NULL;
if (value->type != META_PROP_VALUE_INVALID)
group->wm_client_machine = g_strdup (value->v.str);
meta_verbose ("Group has client machine \"%s\"\n",
group->wm_client_machine ? group->wm_client_machine : "unset");
}
static void
init_net_startup_id (MetaX11Display *x11_display,
Atom property,
MetaPropValue *value)
{
value->type = META_PROP_VALUE_UTF8;
value->atom = x11_display->atom__NET_STARTUP_ID;
}
static void
reload_net_startup_id (MetaGroup *group,
MetaPropValue *value)
{
g_free (group->startup_id);
group->startup_id = NULL;
if (value->type != META_PROP_VALUE_INVALID)
group->startup_id = g_strdup (value->v.str);
meta_verbose ("Group has startup id \"%s\"\n",
group->startup_id ? group->startup_id : "unset");
}
#define N_HOOKS 3
void
meta_x11_display_init_group_prop_hooks (MetaX11Display *x11_display)
{
int i;
MetaGroupPropHooks *hooks;
g_assert (x11_display->group_prop_hooks == NULL);
x11_display->group_prop_hooks = g_new0 (MetaGroupPropHooks, N_HOOKS);
hooks = x11_display->group_prop_hooks;
i = 0;
hooks[i].property = x11_display->atom_WM_CLIENT_MACHINE;
hooks[i].init_func = init_wm_client_machine;
hooks[i].reload_func = reload_wm_client_machine;
++i;
hooks[i].property = x11_display->atom__NET_WM_PID;
hooks[i].init_func = NULL;
hooks[i].reload_func = NULL;
++i;
hooks[i].property = x11_display->atom__NET_STARTUP_ID;
hooks[i].init_func = init_net_startup_id;
hooks[i].reload_func = reload_net_startup_id;
++i;
if (i != N_HOOKS)
{
g_error ("Initialized %d group hooks should have been %d\n", i, N_HOOKS);
}
}
void
meta_x11_display_free_group_prop_hooks (MetaX11Display *x11_display)
{
g_assert (x11_display->group_prop_hooks != NULL);
g_free (x11_display->group_prop_hooks);
x11_display->group_prop_hooks = NULL;
}
static MetaGroupPropHooks*
find_hooks (MetaX11Display *x11_display,
Atom property)
{
int i;
/* FIXME we could sort the array and do binary search or
* something
*/
i = 0;
while (i < N_HOOKS)
{
if (x11_display->group_prop_hooks[i].property == property)
return &x11_display->group_prop_hooks[i];
++i;
}
return NULL;
}
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