mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-11-05 00:46:16 +01:00
ec98953e42
NULL is now a shortcut for g_cclosure_marshal_generic, so avoid referencing it directly. https://bugzilla.gnome.org/show_bug.cgi?id=654917
522 lines
16 KiB
C
522 lines
16 KiB
C
/*
|
|
* Copyright © 2010 Codethink Limited
|
|
*
|
|
* 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 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, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*
|
|
* Authors: Ryan Lortie <desrt@desrt.ca>
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "gactiongroup.h"
|
|
#include "gaction.h"
|
|
#include "glibintl.h"
|
|
|
|
/**
|
|
* SECTION:gactiongroup
|
|
* @title: GActionGroup
|
|
* @short_description: A group of actions
|
|
*
|
|
* #GActionGroup represents a group of actions.
|
|
*
|
|
* Each action in the group has a unique name (which is a string). All
|
|
* method calls, except g_action_group_list_actions() take the name of
|
|
* an action as an argument.
|
|
*
|
|
* The #GActionGroup API is meant to be the 'public' API to the action
|
|
* group. The calls here are exactly the interaction that 'external
|
|
* forces' (eg: UI, incoming D-Bus messages, etc.) are supposed to have
|
|
* with actions. 'Internal' APIs (ie: ones meant only to be accessed by
|
|
* the action group implementation) are found on subclasses. This is
|
|
* why you will find -- for example -- g_action_group_get_action_enabled()
|
|
* but not an equivalent <function>set()</function> call.
|
|
*
|
|
* Signals are emitted on the action group in response to state changes
|
|
* on individual actions.
|
|
**/
|
|
|
|
G_DEFINE_INTERFACE (GActionGroup, g_action_group, G_TYPE_OBJECT)
|
|
|
|
enum
|
|
{
|
|
SIGNAL_ACTION_ADDED,
|
|
SIGNAL_ACTION_REMOVED,
|
|
SIGNAL_ACTION_ENABLED_CHANGED,
|
|
SIGNAL_ACTION_STATE_CHANGED,
|
|
NR_SIGNALS
|
|
};
|
|
|
|
static guint g_action_group_signals[NR_SIGNALS];
|
|
|
|
static void
|
|
g_action_group_default_init (GActionGroupInterface *class)
|
|
{
|
|
/**
|
|
* GActionGroup::action-added:
|
|
* @action_group: the #GActionGroup that changed
|
|
* @action_name: the name of the action in @action_group
|
|
*
|
|
* Signals that a new action was just added to the group.
|
|
* This signal is emitted after the action has been added
|
|
* and is now visible.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
g_action_group_signals[SIGNAL_ACTION_ADDED] =
|
|
g_signal_new (I_("action-added"),
|
|
G_TYPE_ACTION_GROUP,
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
|
|
G_STRUCT_OFFSET (GActionGroupInterface, action_added),
|
|
NULL, NULL,
|
|
g_cclosure_marshal_VOID__STRING,
|
|
G_TYPE_NONE, 1,
|
|
G_TYPE_STRING);
|
|
|
|
/**
|
|
* GActionGroup::action-removed:
|
|
* @action_group: the #GActionGroup that changed
|
|
* @action_name: the name of the action in @action_group
|
|
*
|
|
* Signals that an action is just about to be removed from the group.
|
|
* This signal is emitted before the action is removed, so the action
|
|
* is still visible and can be queried from the signal handler.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
g_action_group_signals[SIGNAL_ACTION_REMOVED] =
|
|
g_signal_new (I_("action-removed"),
|
|
G_TYPE_ACTION_GROUP,
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
|
|
G_STRUCT_OFFSET (GActionGroupInterface, action_removed),
|
|
NULL, NULL,
|
|
g_cclosure_marshal_VOID__STRING,
|
|
G_TYPE_NONE, 1,
|
|
G_TYPE_STRING);
|
|
|
|
|
|
/**
|
|
* GActionGroup::action-enabled-changed:
|
|
* @action_group: the #GActionGroup that changed
|
|
* @action_name: the name of the action in @action_group
|
|
* @enabled: whether the action is enabled or not
|
|
*
|
|
* Signals that the enabled status of the named action has changed.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
g_action_group_signals[SIGNAL_ACTION_ENABLED_CHANGED] =
|
|
g_signal_new (I_("action-enabled-changed"),
|
|
G_TYPE_ACTION_GROUP,
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
|
|
G_STRUCT_OFFSET (GActionGroupInterface,
|
|
action_enabled_changed),
|
|
NULL, NULL,
|
|
NULL,
|
|
G_TYPE_NONE, 2,
|
|
G_TYPE_STRING,
|
|
G_TYPE_BOOLEAN);
|
|
|
|
/**
|
|
* GActionGroup::action-state-changed:
|
|
* @action_group: the #GActionGroup that changed
|
|
* @action_name: the name of the action in @action_group
|
|
* @value: the new value of the state
|
|
*
|
|
* Signals that the state of the named action has changed.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
g_action_group_signals[SIGNAL_ACTION_STATE_CHANGED] =
|
|
g_signal_new (I_("action-state-changed"),
|
|
G_TYPE_ACTION_GROUP,
|
|
G_SIGNAL_RUN_LAST |
|
|
G_SIGNAL_DETAILED |
|
|
G_SIGNAL_MUST_COLLECT,
|
|
G_STRUCT_OFFSET (GActionGroupInterface,
|
|
action_state_changed),
|
|
NULL, NULL,
|
|
NULL,
|
|
G_TYPE_NONE, 2,
|
|
G_TYPE_STRING,
|
|
G_TYPE_VARIANT);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_list_actions:
|
|
* @action_group: a #GActionGroup
|
|
*
|
|
* Lists the actions contained within @action_group.
|
|
*
|
|
* The caller is responsible for freeing the list with g_strfreev() when
|
|
* it is no longer required.
|
|
*
|
|
* Returns: (transfer full): a %NULL-terminated array of the names of the
|
|
* actions in the groupb
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
gchar **
|
|
g_action_group_list_actions (GActionGroup *action_group)
|
|
{
|
|
g_return_val_if_fail (G_IS_ACTION_GROUP (action_group), NULL);
|
|
|
|
return G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->list_actions (action_group);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_has_action:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to check for
|
|
*
|
|
* Checks if the named action exists within @action_group.
|
|
*
|
|
* Returns: whether the named action exists
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
gboolean
|
|
g_action_group_has_action (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_val_if_fail (G_IS_ACTION_GROUP (action_group), FALSE);
|
|
|
|
return G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->has_action (action_group, action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_get_action_parameter_type:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to query
|
|
*
|
|
* Queries the type of the parameter that must be given when activating
|
|
* the named action within @action_group.
|
|
*
|
|
* When activating the action using g_action_group_activate_action(),
|
|
* the #GVariant given to that function must be of the type returned
|
|
* by this function.
|
|
*
|
|
* In the case that this function returns %NULL, you must not give any
|
|
* #GVariant, but %NULL instead.
|
|
*
|
|
* The parameter type of a particular action will never change but it is
|
|
* possible for an action to be removed and for a new action to be added
|
|
* with the same name but a different parameter type.
|
|
*
|
|
* Return value: the parameter type
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
const GVariantType *
|
|
g_action_group_get_action_parameter_type (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_val_if_fail (G_IS_ACTION_GROUP (action_group), NULL);
|
|
|
|
return G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->get_action_parameter_type (action_group, action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_get_action_state_type:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to query
|
|
*
|
|
* Queries the type of the state of the named action within
|
|
* @action_group.
|
|
*
|
|
* If the action is stateful then this function returns the
|
|
* #GVariantType of the state. All calls to
|
|
* g_action_group_change_action_state() must give a #GVariant of this
|
|
* type and g_action_group_get_action_state() will return a #GVariant
|
|
* of the same type.
|
|
*
|
|
* If the action is not stateful then this function will return %NULL.
|
|
* In that case, g_action_group_get_action_state() will return %NULL
|
|
* and you must not call g_action_group_change_action_state().
|
|
*
|
|
* The state type of a particular action will never change but it is
|
|
* possible for an action to be removed and for a new action to be added
|
|
* with the same name but a different state type.
|
|
*
|
|
* Returns: (transfer full): the state type, if the action is stateful
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
const GVariantType *
|
|
g_action_group_get_action_state_type (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_val_if_fail (G_IS_ACTION_GROUP (action_group), NULL);
|
|
|
|
return G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->get_action_state_type (action_group, action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_get_action_state_hint:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to query
|
|
*
|
|
* Requests a hint about the valid range of values for the state of the
|
|
* named action within @action_group.
|
|
*
|
|
* If %NULL is returned it either means that the action is not stateful
|
|
* or that there is no hint about the valid range of values for the
|
|
* state of the action.
|
|
*
|
|
* If a #GVariant array is returned then each item in the array is a
|
|
* possible value for the state. If a #GVariant pair (ie: two-tuple) is
|
|
* returned then the tuple specifies the inclusive lower and upper bound
|
|
* of valid values for the state.
|
|
*
|
|
* In any case, the information is merely a hint. It may be possible to
|
|
* have a state value outside of the hinted range and setting a value
|
|
* within the range may fail.
|
|
*
|
|
* The return value (if non-%NULL) should be freed with
|
|
* g_variant_unref() when it is no longer required.
|
|
*
|
|
* Return value: (transfer full): the state range hint
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
GVariant *
|
|
g_action_group_get_action_state_hint (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_val_if_fail (G_IS_ACTION_GROUP (action_group), NULL);
|
|
|
|
return G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->get_action_state_hint (action_group, action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_get_action_enabled:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to query
|
|
*
|
|
* Checks if the named action within @action_group is currently enabled.
|
|
*
|
|
* An action must be enabled in order to be activated or in order to
|
|
* have its state changed from outside callers.
|
|
*
|
|
* Return value: whether or not the action is currently enabled
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
gboolean
|
|
g_action_group_get_action_enabled (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_val_if_fail (G_IS_ACTION_GROUP (action_group), FALSE);
|
|
|
|
return G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->get_action_enabled (action_group, action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_get_action_state:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to query
|
|
*
|
|
* Queries the current state of the named action within @action_group.
|
|
*
|
|
* If the action is not stateful then %NULL will be returned. If the
|
|
* action is stateful then the type of the return value is the type
|
|
* given by g_action_group_get_action_state_type().
|
|
*
|
|
* The return value (if non-%NULL) should be freed with
|
|
* g_variant_unref() when it is no longer required.
|
|
*
|
|
* Return value: (allow-none): the current state of the action
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
GVariant *
|
|
g_action_group_get_action_state (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_val_if_fail (G_IS_ACTION_GROUP (action_group), NULL);
|
|
|
|
return G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->get_action_state (action_group, action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_change_action_state:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to request the change on
|
|
* @value: the new state
|
|
*
|
|
* Request for the state of the named action within @action_group to be
|
|
* changed to @value.
|
|
*
|
|
* The action must be stateful and @value must be of the correct type.
|
|
* See g_action_group_get_action_state_type().
|
|
*
|
|
* This call merely requests a change. The action may refuse to change
|
|
* its state or may change its state to something other than @value.
|
|
* See g_action_group_get_action_state_hint().
|
|
*
|
|
* If the @value GVariant is floating, it is consumed.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
void
|
|
g_action_group_change_action_state (GActionGroup *action_group,
|
|
const gchar *action_name,
|
|
GVariant *value)
|
|
{
|
|
g_return_if_fail (G_IS_ACTION_GROUP (action_group));
|
|
g_return_if_fail (action_name != NULL);
|
|
g_return_if_fail (value != NULL);
|
|
|
|
G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->change_action_state (action_group, action_name, value);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_activate_action:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of the action to activate
|
|
* @parameter: (allow-none): parameters to the activation
|
|
*
|
|
* Activate the named action within @action_group.
|
|
*
|
|
* If the action is expecting a parameter, then the correct type of
|
|
* parameter must be given as @parameter. If the action is expecting no
|
|
* parameters then @parameter must be %NULL. See
|
|
* g_action_group_get_action_parameter_type().
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
void
|
|
g_action_group_activate_action (GActionGroup *action_group,
|
|
const gchar *action_name,
|
|
GVariant *parameter)
|
|
{
|
|
g_return_if_fail (G_IS_ACTION_GROUP (action_group));
|
|
g_return_if_fail (action_name != NULL);
|
|
|
|
G_ACTION_GROUP_GET_IFACE (action_group)
|
|
->activate_action (action_group, action_name, parameter);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_action_added:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of an action in the group
|
|
*
|
|
* Emits the #GActionGroup::action-added signal on @action_group.
|
|
*
|
|
* This function should only be called by #GActionGroup implementations.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
void
|
|
g_action_group_action_added (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_if_fail (G_IS_ACTION_GROUP (action_group));
|
|
g_return_if_fail (action_name != NULL);
|
|
|
|
g_signal_emit (action_group,
|
|
g_action_group_signals[SIGNAL_ACTION_ADDED],
|
|
g_quark_try_string (action_name),
|
|
action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_action_removed:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of an action in the group
|
|
*
|
|
* Emits the #GActionGroup::action-removed signal on @action_group.
|
|
*
|
|
* This function should only be called by #GActionGroup implementations.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
void
|
|
g_action_group_action_removed (GActionGroup *action_group,
|
|
const gchar *action_name)
|
|
{
|
|
g_return_if_fail (G_IS_ACTION_GROUP (action_group));
|
|
g_return_if_fail (action_name != NULL);
|
|
|
|
g_signal_emit (action_group,
|
|
g_action_group_signals[SIGNAL_ACTION_REMOVED],
|
|
g_quark_try_string (action_name),
|
|
action_name);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_action_enabled_changed:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of an action in the group
|
|
* @enabled: whether or not the action is now enabled
|
|
*
|
|
* Emits the #GActionGroup::action-enabled-changed signal on @action_group.
|
|
*
|
|
* This function should only be called by #GActionGroup implementations.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
void
|
|
g_action_group_action_enabled_changed (GActionGroup *action_group,
|
|
const gchar *action_name,
|
|
gboolean enabled)
|
|
{
|
|
g_return_if_fail (G_IS_ACTION_GROUP (action_group));
|
|
g_return_if_fail (action_name != NULL);
|
|
|
|
enabled = !!enabled;
|
|
|
|
g_signal_emit (action_group,
|
|
g_action_group_signals[SIGNAL_ACTION_ENABLED_CHANGED],
|
|
g_quark_try_string (action_name),
|
|
action_name,
|
|
enabled);
|
|
}
|
|
|
|
/**
|
|
* g_action_group_action_state_changed:
|
|
* @action_group: a #GActionGroup
|
|
* @action_name: the name of an action in the group
|
|
* @state: the new state of the named action
|
|
*
|
|
* Emits the #GActionGroup::action-state-changed signal on @action_group.
|
|
*
|
|
* This function should only be called by #GActionGroup implementations.
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
void
|
|
g_action_group_action_state_changed (GActionGroup *action_group,
|
|
const gchar *action_name,
|
|
GVariant *state)
|
|
{
|
|
g_return_if_fail (G_IS_ACTION_GROUP (action_group));
|
|
g_return_if_fail (action_name != NULL);
|
|
|
|
g_signal_emit (action_group,
|
|
g_action_group_signals[SIGNAL_ACTION_STATE_CHANGED],
|
|
g_quark_try_string (action_name),
|
|
action_name,
|
|
state);
|
|
}
|