/*
* Copyright © 2011 Canonical 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 of the licence, 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/>.
*
* Author: Ryan Lortie <desrt@desrt.ca>
*/
#include "config.h"
#include "gtkactionmuxer.h"
#include "gtkactionobservable.h"
#include "gtkactionobserver.h"
#include <clutter/clutter.h>
#include <string.h>
/**
* SECTION:gtkactionmuxer
* @short_description: Aggregate and monitor several action groups
*
* #GtkActionMuxer is a #GActionGroup and #GtkActionObservable that is
* capable of containing other #GActionGroup instances.
*
* The typical use is aggregating all of the actions applicable to a
* particular context into a single action group, with namespacing.
*
* Consider the case of two action groups -- one containing actions
* applicable to an entire application (such as 'quit') and one
* containing actions applicable to a particular window in the
* application (such as 'fullscreen').
*
* In this case, each of these action groups could be added to a
* #GtkActionMuxer with the prefixes "app" and "win", respectively. This
* would expose the actions as "app.quit" and "win.fullscreen" on the
* #GActionGroup interface presented by the #GtkActionMuxer.
*
* Activations and state change requests on the #GtkActionMuxer are wired
* through to the underlying action group in the expected way.
*
* This class is typically only used at the site of "consumption" of
* actions (eg: when displaying a menu that contains many actions on
* different objects).
*/
static void gtk_action_muxer_group_iface_init (GActionGroupInterface *iface);
static void gtk_action_muxer_observable_iface_init (GtkActionObservableInterface *iface);
typedef GObjectClass GtkActionMuxerClass;
struct _GtkActionMuxer
{
GObject parent_instance;
GHashTable *observed_actions;
GHashTable *groups;
GHashTable *primary_accels;
GtkActionMuxer *parent;
};
G_DEFINE_TYPE_WITH_CODE (GtkActionMuxer, gtk_action_muxer, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_action_muxer_group_iface_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTION_OBSERVABLE, gtk_action_muxer_observable_iface_init))
enum
{
PROP_0,
PROP_PARENT,
NUM_PROPERTIES
};
static GParamSpec *properties[NUM_PROPERTIES];
guint accel_signal;
typedef struct
{
GtkActionMuxer *muxer;
GSList *watchers;
gchar *fullname;
} Action;
typedef struct
{
GtkActionMuxer *muxer;
GActionGroup *group;
gchar *prefix;
gulong handler_ids[4];
} Group;
static void
gtk_action_muxer_append_group_actions (gpointer key,
gpointer value,
gpointer user_data)
{
const gchar *prefix = key;
Group *group = value;
GArray *actions = user_data;
gchar **group_actions;
gchar **action;
group_actions = g_action_group_list_actions (group->group);
for (action = group_actions; *action; action++)
{
gchar *fullname;
fullname = g_strconcat (prefix, ".", *action, NULL);
g_array_append_val (actions, fullname);
}
g_strfreev (group_actions);
}
static gchar **
gtk_action_muxer_list_actions (GActionGroup *action_group)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (action_group);
GArray *actions;
actions = g_array_new (TRUE, FALSE, sizeof (gchar *));
for ( ; muxer != NULL; muxer = muxer->parent)
{
g_hash_table_foreach (muxer->groups,
gtk_action_muxer_append_group_actions,
actions);
}
return (gchar **)(void *) g_array_free (actions, FALSE);
}
static Group *
gtk_action_muxer_find_group (GtkActionMuxer *muxer,
const gchar *full_name,
const gchar **action_name)
{
const gchar *dot;
gchar *prefix;
Group *group;
dot = strchr (full_name, '.');
if (!dot)
return NULL;
prefix = g_strndup (full_name, dot - full_name);
group = g_hash_table_lookup (muxer->groups, prefix);
g_free (prefix);
if (action_name)
*action_name = dot + 1;
return group;
}
static void
gtk_action_muxer_action_enabled_changed (GtkActionMuxer *muxer,
const gchar *action_name,
gboolean enabled)
{
Action *action;
GSList *node;
action = g_hash_table_lookup (muxer->observed_actions, action_name);
for (node = action ? action->watchers : NULL; node; node = node->next)
gtk_action_observer_action_enabled_changed (node->data, GTK_ACTION_OBSERVABLE (muxer), action_name, enabled);
g_action_group_action_enabled_changed (G_ACTION_GROUP (muxer), action_name, enabled);
}
static void
gtk_action_muxer_group_action_enabled_changed (GActionGroup *action_group,
const gchar *action_name,
gboolean enabled,
gpointer user_data)
{
Group *group = user_data;
gchar *fullname;
fullname = g_strconcat (group->prefix, ".", action_name, NULL);
gtk_action_muxer_action_enabled_changed (group->muxer, fullname, enabled);
g_free (fullname);
}
static void
gtk_action_muxer_parent_action_enabled_changed (GActionGroup *action_group,
const gchar *action_name,
gboolean enabled,
gpointer user_data)
{
GtkActionMuxer *muxer = user_data;
gtk_action_muxer_action_enabled_changed (muxer, action_name, enabled);
}
static void
gtk_action_muxer_action_state_changed (GtkActionMuxer *muxer,
const gchar *action_name,
GVariant *state)
{
Action *action;
GSList *node;
action = g_hash_table_lookup (muxer->observed_actions, action_name);
for (node = action ? action->watchers : NULL; node; node = node->next)
gtk_action_observer_action_state_changed (node->data, GTK_ACTION_OBSERVABLE (muxer), action_name, state);
g_action_group_action_state_changed (G_ACTION_GROUP (muxer), action_name, state);
}
static void
gtk_action_muxer_group_action_state_changed (GActionGroup *action_group,
const gchar *action_name,
GVariant *state,
gpointer user_data)
{
Group *group = user_data;
gchar *fullname;
fullname = g_strconcat (group->prefix, ".", action_name, NULL);
gtk_action_muxer_action_state_changed (group->muxer, fullname, state);
g_free (fullname);
}
static void
gtk_action_muxer_parent_action_state_changed (GActionGroup *action_group,
const gchar *action_name,
GVariant *state,
gpointer user_data)
{
GtkActionMuxer *muxer = user_data;
gtk_action_muxer_action_state_changed (muxer, action_name, state);
}
static void
gtk_action_muxer_action_added (GtkActionMuxer *muxer,
const gchar *action_name,
GActionGroup *original_group,
const gchar *orignal_action_name)
{
const GVariantType *parameter_type;
gboolean enabled;
GVariant *state;
Action *action;
action = g_hash_table_lookup (muxer->observed_actions, action_name);
if (action && action->watchers &&
g_action_group_query_action (original_group, orignal_action_name,
&enabled, ¶meter_type, NULL, NULL, &state))
{
GSList *node;
for (node = action->watchers; node; node = node->next)
gtk_action_observer_action_added (node->data,
GTK_ACTION_OBSERVABLE (muxer),
action_name, parameter_type, enabled, state);
if (state)
g_variant_unref (state);
}
g_action_group_action_added (G_ACTION_GROUP (muxer), action_name);
}
static void
gtk_action_muxer_action_added_to_group (GActionGroup *action_group,
const gchar *action_name,
gpointer user_data)
{
Group *group = user_data;
gchar *fullname;
fullname = g_strconcat (group->prefix, ".", action_name, NULL);
gtk_action_muxer_action_added (group->muxer, fullname, action_group, action_name);
g_free (fullname);
}
static void
gtk_action_muxer_action_added_to_parent (GActionGroup *action_group,
const gchar *action_name,
gpointer user_data)
{
GtkActionMuxer *muxer = user_data;
gtk_action_muxer_action_added (muxer, action_name, action_group, action_name);
}
static void
gtk_action_muxer_action_removed (GtkActionMuxer *muxer,
const gchar *action_name)
{
Action *action;
GSList *node;
action = g_hash_table_lookup (muxer->observed_actions, action_name);
for (node = action ? action->watchers : NULL; node; node = node->next)
gtk_action_observer_action_removed (node->data, GTK_ACTION_OBSERVABLE (muxer), action_name);
g_action_group_action_removed (G_ACTION_GROUP (muxer), action_name);
}
static void
gtk_action_muxer_action_removed_from_group (GActionGroup *action_group,
const gchar *action_name,
gpointer user_data)
{
Group *group = user_data;
gchar *fullname;
fullname = g_strconcat (group->prefix, ".", action_name, NULL);
gtk_action_muxer_action_removed (group->muxer, fullname);
g_free (fullname);
}
static void
gtk_action_muxer_action_removed_from_parent (GActionGroup *action_group,
const gchar *action_name,
gpointer user_data)
{
GtkActionMuxer *muxer = user_data;
gtk_action_muxer_action_removed (muxer, action_name);
}
static void
gtk_action_muxer_primary_accel_changed (GtkActionMuxer *muxer,
const gchar *action_name,
const gchar *action_and_target)
{
Action *action;
GSList *node;
if (!action_name)
action_name = strrchr (action_and_target, '|') + 1;
action = g_hash_table_lookup (muxer->observed_actions, action_name);
for (node = action ? action->watchers : NULL; node; node = node->next)
gtk_action_observer_primary_accel_changed (node->data, GTK_ACTION_OBSERVABLE (muxer),
action_name, action_and_target);
g_signal_emit (muxer, accel_signal, 0, action_name, action_and_target);
}
static void
gtk_action_muxer_parent_primary_accel_changed (GtkActionMuxer *parent,
const gchar *action_name,
const gchar *action_and_target,
gpointer user_data)
{
GtkActionMuxer *muxer = user_data;
/* If it's in our table then don't let the parent one filter through */
if (muxer->primary_accels && g_hash_table_lookup (muxer->primary_accels, action_and_target))
return;
gtk_action_muxer_primary_accel_changed (muxer, action_name, action_and_target);
}
static gboolean
gtk_action_muxer_query_action (GActionGroup *action_group,
const gchar *action_name,
gboolean *enabled,
const GVariantType **parameter_type,
const GVariantType **state_type,
GVariant **state_hint,
GVariant **state)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (action_group);
Group *group;
const gchar *unprefixed_name;
group = gtk_action_muxer_find_group (muxer, action_name, &unprefixed_name);
if (group)
return g_action_group_query_action (group->group, unprefixed_name, enabled,
parameter_type, state_type, state_hint, state);
if (muxer->parent)
return g_action_group_query_action (G_ACTION_GROUP (muxer->parent), action_name,
enabled, parameter_type,
state_type, state_hint, state);
return FALSE;
}
static GVariant *
get_platform_data (void)
{
gchar time[32];
GVariantBuilder *builder;
GVariant *result;
g_snprintf (time, 32, "_TIME%d", clutter_get_current_event_time ());
builder = g_variant_builder_new (G_VARIANT_TYPE ("a{sv}"));
g_variant_builder_add (builder, "{sv}", "desktop-startup-id",
g_variant_new_string (time));
result = g_variant_builder_end (builder);
g_variant_builder_unref (builder);
return result;
}
static void
gtk_action_muxer_activate_action (GActionGroup *action_group,
const gchar *action_name,
GVariant *parameter)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (action_group);
Group *group;
const gchar *unprefixed_name;
group = gtk_action_muxer_find_group (muxer, action_name, &unprefixed_name);
if (group)
{
if (G_IS_REMOTE_ACTION_GROUP (group->group))
g_remote_action_group_activate_action_full (G_REMOTE_ACTION_GROUP (group->group),
unprefixed_name, parameter,
get_platform_data ());
else
g_action_group_activate_action (group->group, unprefixed_name, parameter);
}
else if (muxer->parent)
g_action_group_activate_action (G_ACTION_GROUP (muxer->parent), action_name, parameter);
}
static void
gtk_action_muxer_change_action_state (GActionGroup *action_group,
const gchar *action_name,
GVariant *state)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (action_group);
Group *group;
const gchar *unprefixed_name;
group = gtk_action_muxer_find_group (muxer, action_name, &unprefixed_name);
if (group)
{
if (G_IS_REMOTE_ACTION_GROUP (group->group))
g_remote_action_group_change_action_state_full (G_REMOTE_ACTION_GROUP (group->group),
unprefixed_name,
state,
get_platform_data ());
else
g_action_group_change_action_state (group->group, unprefixed_name, state);
}
else if (muxer->parent)
g_action_group_change_action_state (G_ACTION_GROUP (muxer->parent), action_name, state);
}
static void
gtk_action_muxer_unregister_internal (Action *action,
gpointer observer)
{
GtkActionMuxer *muxer = action->muxer;
GSList **ptr;
for (ptr = &action->watchers; *ptr; ptr = &(*ptr)->next)
if ((*ptr)->data == observer)
{
*ptr = g_slist_remove (*ptr, observer);
if (action->watchers == NULL)
g_hash_table_remove (muxer->observed_actions, action->fullname);
break;
}
}
static void
gtk_action_muxer_weak_notify (gpointer data,
GObject *where_the_object_was)
{
Action *action = data;
gtk_action_muxer_unregister_internal (action, where_the_object_was);
}
static void
gtk_action_muxer_register_observer (GtkActionObservable *observable,
const gchar *name,
GtkActionObserver *observer)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (observable);
Action *action;
action = g_hash_table_lookup (muxer->observed_actions, name);
if (action == NULL)
{
action = g_slice_new (Action);
action->muxer = muxer;
action->fullname = g_strdup (name);
action->watchers = NULL;
g_hash_table_insert (muxer->observed_actions, action->fullname, action);
}
action->watchers = g_slist_prepend (action->watchers, observer);
g_object_weak_ref (G_OBJECT (observer), gtk_action_muxer_weak_notify, action);
}
static void
gtk_action_muxer_unregister_observer (GtkActionObservable *observable,
const gchar *name,
GtkActionObserver *observer)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (observable);
Action *action;
action = g_hash_table_lookup (muxer->observed_actions, name);
g_object_weak_unref (G_OBJECT (observer), gtk_action_muxer_weak_notify, action);
gtk_action_muxer_unregister_internal (action, observer);
}
static void
gtk_action_muxer_free_group (gpointer data)
{
Group *group = data;
gint i;
/* 'for loop' or 'four loop'? */
for (i = 0; i < 4; i++)
g_signal_handler_disconnect (group->group, group->handler_ids[i]);
g_object_unref (group->group);
g_free (group->prefix);
g_slice_free (Group, group);
}
static void
gtk_action_muxer_free_action (gpointer data)
{
Action *action = data;
GSList *it;
for (it = action->watchers; it; it = it->next)
g_object_weak_unref (G_OBJECT (it->data), gtk_action_muxer_weak_notify, action);
g_slist_free (action->watchers);
g_free (action->fullname);
g_slice_free (Action, action);
}
static void
gtk_action_muxer_finalize (GObject *object)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (object);
g_assert_cmpint (g_hash_table_size (muxer->observed_actions), ==, 0);
g_hash_table_unref (muxer->observed_actions);
g_hash_table_unref (muxer->groups);
G_OBJECT_CLASS (gtk_action_muxer_parent_class)
->finalize (object);
}
static void
gtk_action_muxer_dispose (GObject *object)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (object);
if (muxer->parent)
{
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_action_added_to_parent, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_action_removed_from_parent, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_parent_action_enabled_changed, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_parent_action_state_changed, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_parent_primary_accel_changed, muxer);
g_clear_object (&muxer->parent);
}
g_hash_table_remove_all (muxer->observed_actions);
G_OBJECT_CLASS (gtk_action_muxer_parent_class)
->dispose (object);
}
static void
gtk_action_muxer_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (object);
switch (property_id)
{
case PROP_PARENT:
g_value_set_object (value, gtk_action_muxer_get_parent (muxer));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
gtk_action_muxer_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkActionMuxer *muxer = GTK_ACTION_MUXER (object);
switch (property_id)
{
case PROP_PARENT:
gtk_action_muxer_set_parent (muxer, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
gtk_action_muxer_init (GtkActionMuxer *muxer)
{
muxer->observed_actions = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, gtk_action_muxer_free_action);
muxer->groups = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, gtk_action_muxer_free_group);
}
static void
gtk_action_muxer_observable_iface_init (GtkActionObservableInterface *iface)
{
iface->register_observer = gtk_action_muxer_register_observer;
iface->unregister_observer = gtk_action_muxer_unregister_observer;
}
static void
gtk_action_muxer_group_iface_init (GActionGroupInterface *iface)
{
iface->list_actions = gtk_action_muxer_list_actions;
iface->query_action = gtk_action_muxer_query_action;
iface->activate_action = gtk_action_muxer_activate_action;
iface->change_action_state = gtk_action_muxer_change_action_state;
}
static void
gtk_action_muxer_class_init (GObjectClass *class)
{
class->get_property = gtk_action_muxer_get_property;
class->set_property = gtk_action_muxer_set_property;
class->finalize = gtk_action_muxer_finalize;
class->dispose = gtk_action_muxer_dispose;
accel_signal = g_signal_new ("primary-accel-changed", GTK_TYPE_ACTION_MUXER, G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_STRING);
properties[PROP_PARENT] = g_param_spec_object ("parent", "Parent",
"The parent muxer",
GTK_TYPE_ACTION_MUXER,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (class, NUM_PROPERTIES, properties);
}
/**
* gtk_action_muxer_insert:
* @muxer: a #GtkActionMuxer
* @prefix: the prefix string for the action group
* @action_group: a #GActionGroup
*
* Adds the actions in @action_group to the list of actions provided by
* @muxer. @prefix is prefixed to each action name, such that for each
* action <varname>x</varname> in @action_group, there is an equivalent
* action @prefix<literal>.</literal><varname>x</varname> in @muxer.
*
* For example, if @prefix is "<literal>app</literal>" and @action_group
* contains an action called "<literal>quit</literal>", then @muxer will
* now contain an action called "<literal>app.quit</literal>".
*
* If any #GtkActionObservers are registered for actions in the group,
* "action_added" notifications will be emitted, as appropriate.
*
* @prefix must not contain a dot ('.').
*/
void
gtk_action_muxer_insert (GtkActionMuxer *muxer,
const gchar *prefix,
GActionGroup *action_group)
{
gchar **actions;
Group *group;
gint i;
/* TODO: diff instead of ripout and replace */
gtk_action_muxer_remove (muxer, prefix);
group = g_slice_new (Group);
group->muxer = muxer;
group->group = g_object_ref (action_group);
group->prefix = g_strdup (prefix);
g_hash_table_insert (muxer->groups, group->prefix, group);
actions = g_action_group_list_actions (group->group);
for (i = 0; actions[i]; i++)
gtk_action_muxer_action_added_to_group (group->group, actions[i], group);
g_strfreev (actions);
group->handler_ids[0] = g_signal_connect (group->group, "action-added",
G_CALLBACK (gtk_action_muxer_action_added_to_group), group);
group->handler_ids[1] = g_signal_connect (group->group, "action-removed",
G_CALLBACK (gtk_action_muxer_action_removed_from_group), group);
group->handler_ids[2] = g_signal_connect (group->group, "action-enabled-changed",
G_CALLBACK (gtk_action_muxer_group_action_enabled_changed), group);
group->handler_ids[3] = g_signal_connect (group->group, "action-state-changed",
G_CALLBACK (gtk_action_muxer_group_action_state_changed), group);
}
/**
* gtk_action_muxer_remove:
* @muxer: a #GtkActionMuxer
* @prefix: the prefix of the action group to remove
*
* Removes a #GActionGroup from the #GtkActionMuxer.
*
* If any #GtkActionObservers are registered for actions in the group,
* "action_removed" notifications will be emitted, as appropriate.
*/
void
gtk_action_muxer_remove (GtkActionMuxer *muxer,
const gchar *prefix)
{
Group *group;
group = g_hash_table_lookup (muxer->groups, prefix);
if (group != NULL)
{
gchar **actions;
gint i;
g_hash_table_steal (muxer->groups, prefix);
actions = g_action_group_list_actions (group->group);
for (i = 0; actions[i]; i++)
gtk_action_muxer_action_removed_from_group (group->group, actions[i], group);
g_strfreev (actions);
gtk_action_muxer_free_group (group);
}
}
/**
* gtk_action_muxer_new:
*
* Creates a new #GtkActionMuxer.
*/
GtkActionMuxer *
gtk_action_muxer_new (void)
{
return g_object_new (GTK_TYPE_ACTION_MUXER, NULL);
}
/**
* gtk_action_muxer_get_parent:
* @muxer: a #GtkActionMuxer
*
* Returns: (transfer none): the parent of @muxer, or NULL.
*/
GtkActionMuxer *
gtk_action_muxer_get_parent (GtkActionMuxer *muxer)
{
g_return_val_if_fail (GTK_IS_ACTION_MUXER (muxer), NULL);
return muxer->parent;
}
static void
emit_changed_accels (GtkActionMuxer *muxer,
GtkActionMuxer *parent)
{
while (parent)
{
if (parent->primary_accels)
{
GHashTableIter iter;
gpointer key;
g_hash_table_iter_init (&iter, parent->primary_accels);
while (g_hash_table_iter_next (&iter, &key, NULL))
gtk_action_muxer_primary_accel_changed (muxer, NULL, key);
}
parent = parent->parent;
}
}
/**
* gtk_action_muxer_set_parent:
* @muxer: a #GtkActionMuxer
* @parent: (nullable): the new parent #GtkActionMuxer
*
* Sets the parent of @muxer to @parent.
*/
void
gtk_action_muxer_set_parent (GtkActionMuxer *muxer,
GtkActionMuxer *parent)
{
g_return_if_fail (GTK_IS_ACTION_MUXER (muxer));
g_return_if_fail (parent == NULL || GTK_IS_ACTION_MUXER (parent));
if (muxer->parent == parent)
return;
if (muxer->parent != NULL)
{
gchar **actions;
gchar **it;
actions = g_action_group_list_actions (G_ACTION_GROUP (muxer->parent));
for (it = actions; *it; it++)
gtk_action_muxer_action_removed (muxer, *it);
g_strfreev (actions);
emit_changed_accels (muxer, muxer->parent);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_action_added_to_parent, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_action_removed_from_parent, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_parent_action_enabled_changed, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_parent_action_state_changed, muxer);
g_signal_handlers_disconnect_by_func (muxer->parent, gtk_action_muxer_parent_primary_accel_changed, muxer);
g_object_unref (muxer->parent);
}
muxer->parent = parent;
if (muxer->parent != NULL)
{
gchar **actions;
gchar **it;
g_object_ref (muxer->parent);
actions = g_action_group_list_actions (G_ACTION_GROUP (muxer->parent));
for (it = actions; *it; it++)
gtk_action_muxer_action_added (muxer, *it, G_ACTION_GROUP (muxer->parent), *it);
g_strfreev (actions);
emit_changed_accels (muxer, muxer->parent);
g_signal_connect (muxer->parent, "action-added",
G_CALLBACK (gtk_action_muxer_action_added_to_parent), muxer);
g_signal_connect (muxer->parent, "action-removed",
G_CALLBACK (gtk_action_muxer_action_removed_from_parent), muxer);
g_signal_connect (muxer->parent, "action-enabled-changed",
G_CALLBACK (gtk_action_muxer_parent_action_enabled_changed), muxer);
g_signal_connect (muxer->parent, "action-state-changed",
G_CALLBACK (gtk_action_muxer_parent_action_state_changed), muxer);
g_signal_connect (muxer->parent, "primary-accel-changed",
G_CALLBACK (gtk_action_muxer_parent_primary_accel_changed), muxer);
}
g_object_notify_by_pspec (G_OBJECT (muxer), properties[PROP_PARENT]);
}
void
gtk_action_muxer_set_primary_accel (GtkActionMuxer *muxer,
const gchar *action_and_target,
const gchar *primary_accel)
{
if (!muxer->primary_accels)
muxer->primary_accels = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
if (primary_accel)
g_hash_table_insert (muxer->primary_accels, g_strdup (action_and_target), g_strdup (primary_accel));
else
g_hash_table_remove (muxer->primary_accels, action_and_target);
gtk_action_muxer_primary_accel_changed (muxer, NULL, action_and_target);
}
const gchar *
gtk_action_muxer_get_primary_accel (GtkActionMuxer *muxer,
const gchar *action_and_target)
{
if (muxer->primary_accels)
{
const gchar *primary_accel;
primary_accel = g_hash_table_lookup (muxer->primary_accels, action_and_target);
if (primary_accel)
return primary_accel;
}
if (!muxer->parent)
return NULL;
return gtk_action_muxer_get_primary_accel (muxer->parent, action_and_target);
}
gchar *
gtk_print_action_and_target (const gchar *action_namespace,
const gchar *action_name,
GVariant *target)
{
GString *result;
g_return_val_if_fail (strchr (action_name, '|') == NULL, NULL);
g_return_val_if_fail (action_namespace == NULL || strchr (action_namespace, '|') == NULL, NULL);
result = g_string_new (NULL);
if (target)
g_variant_print_string (target, result, TRUE);
g_string_append_c (result, '|');
if (action_namespace)
{
g_string_append (result, action_namespace);
g_string_append_c (result, '.');
}
g_string_append (result, action_name);
return g_string_free (result, FALSE);
}