/*
* Copyright © 2010 Codethink Limited
*
* 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: Ryan Lortie <desrt@desrt.ca>
*/
#include "config.h"
#include "gsimpleactiongroup.h"
#include "gsimpleaction.h"
#include "gactionmap.h"
#include "gaction.h"
/**
* SECTION:gsimpleactiongroup
* @title: GSimpleActionGroup
* @short_description: A simple GActionGroup implementation
* @include: gio/gio.h
*
* #GSimpleActionGroup is a hash table filled with #GAction objects,
* implementing the #GActionGroup and #GActionMap interfaces.
**/
struct _GSimpleActionGroupPrivate
{
GHashTable *table; /* string -> GAction */
};
static void g_simple_action_group_iface_init (GActionGroupInterface *);
static void g_simple_action_group_map_iface_init (GActionMapInterface *);
G_DEFINE_TYPE_WITH_CODE (GSimpleActionGroup,
g_simple_action_group, G_TYPE_OBJECT,
G_ADD_PRIVATE (GSimpleActionGroup)
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP,
g_simple_action_group_iface_init);
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP,
g_simple_action_group_map_iface_init))
static gchar **
g_simple_action_group_list_actions (GActionGroup *group)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (group);
GHashTableIter iter;
gint n, i = 0;
gchar **keys;
gpointer key;
n = g_hash_table_size (simple->priv->table);
keys = g_new (gchar *, n + 1);
g_hash_table_iter_init (&iter, simple->priv->table);
while (g_hash_table_iter_next (&iter, &key, NULL))
keys[i++] = g_strdup (key);
g_assert_cmpint (i, ==, n);
keys[n] = NULL;
return keys;
}
static gboolean
g_simple_action_group_query_action (GActionGroup *group,
const gchar *action_name,
gboolean *enabled,
const GVariantType **parameter_type,
const GVariantType **state_type,
GVariant **state_hint,
GVariant **state)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (group);
GAction *action;
action = g_hash_table_lookup (simple->priv->table, action_name);
if (action == NULL)
return FALSE;
if (enabled)
*enabled = g_action_get_enabled (action);
if (parameter_type)
*parameter_type = g_action_get_parameter_type (action);
if (state_type)
*state_type = g_action_get_state_type (action);
if (state_hint)
*state_hint = g_action_get_state_hint (action);
if (state)
*state = g_action_get_state (action);
return TRUE;
}
static void
g_simple_action_group_change_state (GActionGroup *group,
const gchar *action_name,
GVariant *value)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (group);
GAction *action;
action = g_hash_table_lookup (simple->priv->table, action_name);
if (action == NULL)
return;
g_action_change_state (action, value);
}
static void
g_simple_action_group_activate (GActionGroup *group,
const gchar *action_name,
GVariant *parameter)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (group);
GAction *action;
action = g_hash_table_lookup (simple->priv->table, action_name);
if (action == NULL)
return;
g_action_activate (action, parameter);
}
static void
action_enabled_notify (GAction *action,
GParamSpec *pspec,
gpointer user_data)
{
g_action_group_action_enabled_changed (user_data,
g_action_get_name (action),
g_action_get_enabled (action));
}
static void
action_state_notify (GAction *action,
GParamSpec *pspec,
gpointer user_data)
{
GVariant *value;
value = g_action_get_state (action);
g_action_group_action_state_changed (user_data,
g_action_get_name (action),
value);
g_variant_unref (value);
}
static void
g_simple_action_group_disconnect (gpointer key,
gpointer value,
gpointer user_data)
{
g_signal_handlers_disconnect_by_func (value, action_enabled_notify,
user_data);
g_signal_handlers_disconnect_by_func (value, action_state_notify,
user_data);
}
static GAction *
g_simple_action_group_lookup_action (GActionMap *action_map,
const gchar *action_name)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (action_map);
return g_hash_table_lookup (simple->priv->table, action_name);
}
static void
g_simple_action_group_add_action (GActionMap *action_map,
GAction *action)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (action_map);
const gchar *action_name;
GAction *old_action;
action_name = g_action_get_name (action);
if (action_name == NULL)
{
g_critical ("The supplied action has no name. You must set the "
"GAction:name property when creating an action.");
return;
}
old_action = g_hash_table_lookup (simple->priv->table, action_name);
if (old_action != action)
{
if (old_action != NULL)
{
g_action_group_action_removed (G_ACTION_GROUP (simple),
action_name);
g_simple_action_group_disconnect (NULL, old_action, simple);
}
g_signal_connect (action, "notify::enabled",
G_CALLBACK (action_enabled_notify), simple);
if (g_action_get_state_type (action) != NULL)
g_signal_connect (action, "notify::state",
G_CALLBACK (action_state_notify), simple);
g_hash_table_insert (simple->priv->table,
g_strdup (action_name),
g_object_ref (action));
g_action_group_action_added (G_ACTION_GROUP (simple), action_name);
}
}
static void
g_simple_action_group_remove_action (GActionMap *action_map,
const gchar *action_name)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (action_map);
GAction *action;
action = g_hash_table_lookup (simple->priv->table, action_name);
if (action != NULL)
{
g_action_group_action_removed (G_ACTION_GROUP (simple), action_name);
g_simple_action_group_disconnect (NULL, action, simple);
g_hash_table_remove (simple->priv->table, action_name);
}
}
static void
g_simple_action_group_finalize (GObject *object)
{
GSimpleActionGroup *simple = G_SIMPLE_ACTION_GROUP (object);
g_hash_table_foreach (simple->priv->table,
g_simple_action_group_disconnect,
simple);
g_hash_table_unref (simple->priv->table);
G_OBJECT_CLASS (g_simple_action_group_parent_class)
->finalize (object);
}
static void
g_simple_action_group_init (GSimpleActionGroup *simple)
{
simple->priv = g_simple_action_group_get_instance_private (simple);
simple->priv->table = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, g_object_unref);
}
static void
g_simple_action_group_class_init (GSimpleActionGroupClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = g_simple_action_group_finalize;
}
static void
g_simple_action_group_iface_init (GActionGroupInterface *iface)
{
iface->list_actions = g_simple_action_group_list_actions;
iface->query_action = g_simple_action_group_query_action;
iface->change_action_state = g_simple_action_group_change_state;
iface->activate_action = g_simple_action_group_activate;
}
static void
g_simple_action_group_map_iface_init (GActionMapInterface *iface)
{
iface->add_action = g_simple_action_group_add_action;
iface->remove_action = g_simple_action_group_remove_action;
iface->lookup_action = g_simple_action_group_lookup_action;
}
/**
* g_simple_action_group_new:
*
* Creates a new, empty, #GSimpleActionGroup.
*
* Returns: a new #GSimpleActionGroup
*
* Since: 2.28
**/
GSimpleActionGroup *
g_simple_action_group_new (void)
{
return g_object_new (G_TYPE_SIMPLE_ACTION_GROUP, NULL);
}
/**
* g_simple_action_group_lookup:
* @simple: a #GSimpleActionGroup
* @action_name: the name of an action
*
* Looks up the action with the name @action_name in the group.
*
* If no such action exists, returns %NULL.
*
* Returns: (transfer none): a #GAction, or %NULL
*
* Since: 2.28
*
* Deprecated: 2.38: Use g_action_map_lookup_action()
*/
GAction *
g_simple_action_group_lookup (GSimpleActionGroup *simple,
const gchar *action_name)
{
g_return_val_if_fail (G_IS_SIMPLE_ACTION_GROUP (simple), NULL);
return g_action_map_lookup_action (G_ACTION_MAP (simple), action_name);
}
/**
* g_simple_action_group_insert:
* @simple: a #GSimpleActionGroup
* @action: a #GAction
*
* Adds an action to the action group.
*
* If the action group already contains an action with the same name as
* @action then the old action is dropped from the group.
*
* The action group takes its own reference on @action.
*
* Since: 2.28
*
* Deprecated: 2.38: Use g_action_map_add_action()
**/
void
g_simple_action_group_insert (GSimpleActionGroup *simple,
GAction *action)
{
g_return_if_fail (G_IS_SIMPLE_ACTION_GROUP (simple));
g_action_map_add_action (G_ACTION_MAP (simple), action);
}
/**
* g_simple_action_group_remove:
* @simple: a #GSimpleActionGroup
* @action_name: the name of the action
*
* Removes the named action from the action group.
*
* If no action of this name is in the group then nothing happens.
*
* Since: 2.28
*
* Deprecated: 2.38: Use g_action_map_remove_action()
**/
void
g_simple_action_group_remove (GSimpleActionGroup *simple,
const gchar *action_name)
{
g_return_if_fail (G_IS_SIMPLE_ACTION_GROUP (simple));
g_action_map_remove_action (G_ACTION_MAP (simple), action_name);
}
/**
* g_simple_action_group_add_entries:
* @simple: a #GSimpleActionGroup
* @entries: (array length=n_entries): a pointer to the first item in
* an array of #GActionEntry structs
* @n_entries: the length of @entries, or -1
* @user_data: the user data for signal connections
*
* A convenience function for creating multiple #GSimpleAction instances
* and adding them to the action group.
*
* Since: 2.30
*
* Deprecated: 2.38: Use g_action_map_add_action_entries()
**/
void
g_simple_action_group_add_entries (GSimpleActionGroup *simple,
const GActionEntry *entries,
gint n_entries,
gpointer user_data)
{
g_action_map_add_action_entries (G_ACTION_MAP (simple), entries, n_entries, user_data);
}