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GAction is now an interface

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the new class GSimpleAction is the implementation half
This commit is contained in:
Ryan Lortie 2010-08-30 18:58:49 +02:00
parent 6cd62920bb
commit 846b0b3466
12 changed files with 754 additions and 455 deletions
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1
docs/reference/gio/gio-docs.xml
View File

@ -168,6 +168,7 @@
<xi:include href="xml/gactiongroup.xml"/>
<xi:include href="xml/gsimpleactiongroup.xml"/>
<xi:include href="xml/gaction.xml"/>
<xi:include href="xml/gsimpleaction.xml"/>
<xi:include href="xml/gapplication.xml"/>
</chapter>
<chapter id="extending">

40
docs/reference/gio/gio-sections.txt
View File

@ -2689,7 +2689,6 @@ g_application_get_type
<FILE>gactiongroup</FILE>
<TITLE>GActionGroup</TITLE>
GActionGroup
GActionGroupClass
<SUBSECTION>
g_action_group_has_action
@ -2719,9 +2718,7 @@ g_action_group_get_type
GActionGroupPrivate
G_TYPE_ACTION_GROUP
G_IS_ACTION_GROUP
G_ACTION_GROUP_CLASS
G_ACTION_GROUP_GET_CLASS
G_IS_ACTION_GROUP_CLASS
G_ACTION_GROUP_GET_INTERFACE
G_ACTION_GROUP
</SECTION>
@ -2729,11 +2726,6 @@ G_ACTION_GROUP
<FILE>gaction</FILE>
<TITLE>GAction</TITLE>
GAction
GActionClass
<SUBSECTION>
g_action_new
g_action_new_stateful
<SUBSECTION>
g_action_get_name
@ -2743,7 +2735,6 @@ g_action_get_state_hint
<SUBSECTION>
g_action_get_enabled
g_action_set_enabled
g_action_get_state
g_action_set_state
@ -2751,16 +2742,37 @@ g_action_set_state
g_action_activate
<SUBSECTION Standard>
GActionPrivate
g_action_get_type
G_TYPE_ACTION
G_IS_ACTION
G_ACTION_CLASS
G_ACTION_GET_CLASS
G_IS_ACTION_CLASS
G_ACTION_GET_INTERFACE
G_ACTION
</SECTION>
<SECTION>
<FILE>gsimpleaction</FILE>
<TITLE>GSimpleAction</TITLE>
GSimpleAction
GSimpleActionClass
<SUBSECTION>
g_simple_action_new
g_simple_action_new_stateful
<SUBSECTION>
g_simple_action_set_enabled
<SUBSECTION Standard>
GSimpleActionPrivate
g_simple_action_get_type
G_TYPE_SIMPLE_ACTION
G_IS_SIMPLE_ACTION
G_SIMPLE_ACTION_CLASS
G_SIMPLE_ACTION_GET_CLASS
G_IS_SIMPLE_ACTION_CLASS
G_SIMPLE_ACTION
</SECTION>
<SECTION>
<FILE>gsimpleactiongroup</FILE>
<TITLE>GSimpleActionGroup</TITLE>

1
docs/reference/gio/gio.types
View File

@ -1,4 +1,5 @@
g_action_get_type
g_simple_action_get_type
g_action_group_get_type
g_simple_action_group_get_type
g_app_info_create_flags_get_type

2
gio/Makefile.am
View File

@ -132,12 +132,14 @@ application_headers = \
gactiongroup.h \
gsimpleactiongroup.h \
gaction.h \
gsimpleaction.h \
gapplication.h
application_sources = \
gactiongroup.c \
gsimpleactiongroup.c \
gaction.c \
gsimpleaction.c \
gapplication.c

356
gio/gaction.c
View File

@ -23,7 +23,7 @@
#include "gaction.h"
#include "glibintl.h"
G_DEFINE_TYPE (GAction, g_action, G_TYPE_OBJECT)
G_DEFINE_INTERFACE (GAction, g_action, G_TYPE_OBJECT)
/**
* SECTION:gaction
@ -46,220 +46,24 @@ G_DEFINE_TYPE (GAction, g_action, G_TYPE_OBJECT)
* The state may have a hint associated with it, specifying its valid
* range.
*
* #GAction is intended to be used both as a simple action class and as
* a base class for more complicated action types. The base class
* itself supports activation and state. Not supported are state hints
* and filtering requests to set the state based on the requested value.
* You should subclass if you require either of these abilities.
* #GAction is merely the interface to the concept of an action, as
* described above. Various implementations of actions exist, including
* #GSimpleAction and #GtkAction.
*
* In all cases, the base class is responsible for storing the name of
* the action, the parameter type, the enabled state, the optional state
* type and the state and emitting the appropriate signals when these
* change. The base class is also responsbile for filtering calls to
* g_action_activate() and g_action_set_state() for type safety and for
* the state being enabled.
* In all cases, the implementing class is responsible for storing the
* name of the action, the parameter type, the enabled state, the
* optional state type and the state and emitting the appropriate
* signals when these change. The implementor responsible for filtering
* calls to g_action_activate() and g_action_set_state() for type safety
* and for the state being enabled.
*
* Probably the only useful thing to do with a #GAction is to put it
* inside of a #GSimpleActionGroup.
**/
struct _GActionPrivate
{
gchar *name;
GVariantType *parameter_type;
guint enabled : 1;
guint state_set : 1;
GVariant *state;
};
enum
{
PROP_NONE,
PROP_NAME,
PROP_PARAMETER_TYPE,
PROP_ENABLED,
PROP_STATE_TYPE,
PROP_STATE
};
enum
{
SIGNAL_ACTIVATE,
NR_SIGNALS
};
static guint g_action_signals[NR_SIGNALS];
static void
g_action_real_set_state (GAction *action,
GVariant *value)
{
if (action->priv->state == value)
return;
if (!action->priv->state || !g_variant_equal (action->priv->state, value))
{
if (action->priv->state)
g_variant_unref (action->priv->state);
action->priv->state = g_variant_ref (value);
g_object_notify (G_OBJECT (action), "state");
}
}
static GVariant *
g_action_real_get_state_hint (GAction *action)
{
return NULL;
}
static void
g_action_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GAction *action = G_ACTION (object);
switch (prop_id)
{
case PROP_NAME:
g_assert (action->priv->name == NULL);
action->priv->name = g_value_dup_string (value);
break;
case PROP_PARAMETER_TYPE:
g_assert (action->priv->parameter_type == NULL);
action->priv->parameter_type = g_value_dup_boxed (value);
break;
case PROP_ENABLED:
g_action_set_enabled (action, g_value_get_boolean (value));
break;
case PROP_STATE:
/* PROP_STATE is marked as G_PARAM_CONSTRUCT so we always get a
* call during object construction, even if it is NULL. We treat
* that first call differently, for a number of reasons.
*
* First, we don't want the value to be rejected by the
* possibly-overridden .set_state() function. Second, we don't
* want to be tripped by the assertions in g_action_set_state()
* that would enforce the catch22 that we only provide a value of
* the same type as the existing value (when there is not yet an
* existing value).
*/
if (action->priv->state_set)
g_action_set_state (action, g_value_get_variant (value));
else /* this is the special case */
{
/* only do it the first time. */
action->priv->state_set = TRUE;
/* blindly set it. */
action->priv->state = g_value_dup_variant (value);
}
break;
default:
g_assert_not_reached ();
}
}
static void
g_action_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GAction *action = G_ACTION (object);
switch (prop_id)
{
case PROP_NAME:
g_value_set_string (value, g_action_get_name (action));
break;
case PROP_PARAMETER_TYPE:
g_value_set_boxed (value, g_action_get_parameter_type (action));
break;
case PROP_ENABLED:
g_value_set_boolean (value, g_action_get_enabled (action));
break;
case PROP_STATE_TYPE:
g_value_set_boxed (value, g_action_get_state_type (action));
break;
case PROP_STATE:
g_value_take_variant (value, g_action_get_state (action));
break;
default:
g_assert_not_reached ();
}
}
static void
g_action_finalize (GObject *object)
{
GAction *action = G_ACTION (object);
g_free (action->priv->name);
if (action->priv->parameter_type)
g_variant_type_free (action->priv->parameter_type);
if (action->priv->state)
g_variant_unref (action->priv->state);
G_OBJECT_CLASS (g_action_parent_class)
->finalize (object);
}
void
g_action_init (GAction *action)
g_action_default_init (GActionInterface *iface)
{
action->priv = G_TYPE_INSTANCE_GET_PRIVATE (action,
G_TYPE_ACTION,
GActionPrivate);
}
void
g_action_class_init (GActionClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
class->get_state_hint = g_action_real_get_state_hint;
class->set_state = g_action_real_set_state;
object_class->get_property = g_action_get_property;
object_class->set_property = g_action_set_property;
object_class->finalize = g_action_finalize;
/**
* GAction::activate:
* @action: the #GAction
* @parameter: (allow-none): the parameter to the activation
*
* Indicates that the action was just activated.
*
* @parameter will always be of the expected type. In the event that
* an incorrect type was given, no signal will be emitted.
*
* Since: 2.26
*/
g_action_signals[SIGNAL_ACTIVATE] =
g_signal_new (I_("activate"),
G_TYPE_ACTION,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GActionClass, activate),
NULL, NULL,
g_cclosure_marshal_VOID__VARIANT,
G_TYPE_NONE, 1,
G_TYPE_VARIANT);
/**
* GAction:name:
*
@ -268,13 +72,12 @@ g_action_class_init (GActionClass *class)
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_NAME,
g_object_interface_install_property (iface,
g_param_spec_string ("name",
P_("Action Name"),
P_("The name used to invoke the action"),
NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
@ -285,13 +88,12 @@ g_action_class_init (GActionClass *class)
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_PARAMETER_TYPE,
g_object_interface_install_property (iface,
g_param_spec_boxed ("parameter-type",
P_("Parameter Type"),
P_("The type of GVariant passed to activate()"),
G_TYPE_VARIANT_TYPE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
@ -304,13 +106,12 @@ g_action_class_init (GActionClass *class)
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_ENABLED,
g_object_interface_install_property (iface,
g_param_spec_boolean ("enabled",
P_("Enabled"),
P_("If the action can be activated"),
TRUE,
G_PARAM_CONSTRUCT |
G_PARAM_READWRITE |
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
@ -321,7 +122,7 @@ g_action_class_init (GActionClass *class)
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_STATE_TYPE,
g_object_interface_install_property (iface,
g_param_spec_boxed ("state-type",
P_("State Type"),
P_("The type of the state kept by the action"),
@ -336,7 +137,7 @@ g_action_class_init (GActionClass *class)
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_STATE,
g_object_interface_install_property (iface,
g_param_spec_variant ("state",
P_("State"),
P_("The state the action is in"),
@ -345,8 +146,6 @@ g_action_class_init (GActionClass *class)
G_PARAM_CONSTRUCT |
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
g_type_class_add_private (class, sizeof (GActionPrivate));
}
/**
@ -381,8 +180,7 @@ g_action_set_state (GAction *action,
g_variant_ref_sink (value);
if (action->priv->enabled)
G_ACTION_GET_CLASS (action)
G_ACTION_GET_IFACE (action)
->set_state (action, value);
g_variant_unref (value);
@ -398,8 +196,8 @@ g_action_set_state (GAction *action,
* action is stateful then the type of the return value is the type
* given by g_action_get_state_type().
*
* The return value should be released with g_variant_unref() when it is
* no longer required.
* The return value (if non-%NULL) should be freed with
* g_variant_unref() when it is no longer required.
*
* Returns: (allow-none): the current state of the action
*
@ -410,7 +208,8 @@ g_action_get_state (GAction *action)
{
g_return_val_if_fail (G_IS_ACTION (action), NULL);
return action->priv->state ? g_variant_ref (action->priv->state) : NULL;
return G_ACTION_GET_IFACE (action)
->get_state (action);
}
/**
@ -428,7 +227,8 @@ g_action_get_name (GAction *action)
{
g_return_val_if_fail (G_IS_ACTION (action), NULL);
return action->priv->name;
return G_ACTION_GET_IFACE (action)
->get_name (action);
}
/**
@ -453,7 +253,8 @@ g_action_get_parameter_type (GAction *action)
{
g_return_val_if_fail (G_IS_ACTION (action), NULL);
return action->priv->parameter_type;
return G_ACTION_GET_IFACE (action)
->get_parameter_type (action);
}
/**
@ -482,10 +283,8 @@ g_action_get_state_type (GAction *action)
{
g_return_val_if_fail (G_IS_ACTION (action), NULL);
if (action->priv->state != NULL)
return g_variant_get_type (action->priv->state);
else
return NULL;
return G_ACTION_GET_IFACE (action)
->get_state_type (action);
}
/**
@ -520,7 +319,8 @@ g_action_get_state_hint (GAction *action)
{
g_return_val_if_fail (G_IS_ACTION (action), NULL);
return G_ACTION_GET_CLASS (action)->get_state_hint (action);
return G_ACTION_GET_IFACE (action)
->get_state_hint (action);
}
/**
@ -541,34 +341,8 @@ g_action_get_enabled (GAction *action)
{
g_return_val_if_fail (G_IS_ACTION (action), FALSE);
return action->priv->enabled;
}
/**
* g_action_set_enabled:
* @action: a #GAction
* @enabled: whether the action is enabled
*
* Sets the action as enabled or not.
*
* An action must be enabled in order to be activated or in order to
* have its state changed from outside callers.
*
* Since: 2.26
**/
void
g_action_set_enabled (GAction *action,
gboolean enabled)
{
g_return_if_fail (G_IS_ACTION (action));
enabled = !!enabled;
if (action->priv->enabled != enabled)
{
action->priv->enabled = enabled;
g_object_notify (G_OBJECT (action), "enabled");
}
return G_ACTION_GET_IFACE (action)
->get_enabled (action);
}
/**
@ -590,70 +364,12 @@ g_action_activate (GAction *action,
{
g_return_if_fail (G_IS_ACTION (action));
g_return_if_fail (action->priv->parameter_type == NULL ?
parameter == NULL :
(parameter != NULL &&
g_variant_is_of_type (parameter,
action->priv->parameter_type)));
if (parameter != NULL)
g_variant_ref_sink (parameter);
if (action->priv->enabled)
g_signal_emit (action, g_action_signals[SIGNAL_ACTIVATE], 0, parameter);
G_ACTION_GET_IFACE (action)
->activate (action, parameter);
if (parameter != NULL)
g_variant_unref (parameter);
}
/**
* g_action_new:
* @name: the name of the action
* @parameter_type: (allow-none): the type of parameter to the activate function
*
* Creates a new action.
*
* The created action is stateless. See g_action_new_stateful().
*
* Returns: a new #GAction
*
* Since: 2.26
**/
GAction *
g_action_new (const gchar *name,
const GVariantType *parameter_type)
{
return g_object_new (G_TYPE_ACTION,
"name", name,
"parameter-type", parameter_type,
NULL);
}
/**
* g_action_new_stateful:
* @name: the name of the action
* @parameter_type: (allow-none): the type of the parameter to the activate function
* @state: the initial state of the action
*
* Creates a new stateful action.
*
* @state is the initial state of the action. All future state values
* must have the same #GVariantType as the initial state.
*
* If the @state GVariant is floating, it is consumed.
*
* Returns: a new #GAction
*
* Since: 2.26
**/
GAction *
g_action_new_stateful (const gchar *name,
const GVariantType *parameter_type,
GVariant *state)
{
return g_object_new (G_TYPE_ACTION,
"name", name,
"parameter-type", parameter_type,
"state", state,
NULL);
}

69
gio/gaction.h
View File

@ -33,82 +33,53 @@ G_BEGIN_DECLS
#define G_TYPE_ACTION (g_action_get_type ())
#define G_ACTION(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
G_TYPE_ACTION, GAction))
#define G_ACTION_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), \
G_TYPE_ACTION, GActionClass))
#define G_IS_ACTION(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), G_TYPE_ACTION))
#define G_IS_ACTION_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_ACTION))
#define G_ACTION_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), \
G_TYPE_ACTION, GActionClass))
#define G_ACTION_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), \
G_TYPE_ACTION, GActionInterface))
typedef struct _GActionPrivate GActionPrivate;
typedef struct _GActionClass GActionClass;
typedef struct _GActionInterface GActionInterface;
/**
* GAction:
*
* The <structname>GAction</structname> structure contains private
* data and should only be accessed using the provided API
*
* Since: 2.26
*/
struct _GAction
{
/*< private >*/
GObject parent_instance;
GActionPrivate *priv;
};
/**
* GActionClass:
* GActionInterface:
* @get_name: the virtual function pointer for g_action_get_name()
* @get_parameter_type: the virtual function pointer for g_action_get_parameter_type()
* @get_state_type: the virtual function pointer for g_action_get_state_type()
* @get_state_hint: the virtual function pointer for g_action_get_state_hint()
* @set_state: the virtual function pointer for g_action_set_state(). The implementation should check the value
* for validity and then chain up to the handler in the base class in order to actually update the
* state.
* @activate: the class closure for the activate signal
* @get_enabled: the virtual function pointer for g_action_get_enabled()
* @get_state: the virtual function pointer for g_action_get_state()
* @set_state: the virtual function pointer for g_action_set_state()
* @activate: the virtual function pointer for g_action_activate(). Note that #GAction does not have an
* 'activate' signal but that implementations of it may have one.
*
* Since: 2.26
*/
struct _GActionClass
struct _GActionInterface
{
GObjectClass parent_class;
GTypeInterface g_iface;
/*< public >*/
/* virtual functions */
const gchar * (* get_name) (GAction *action);
const GVariantType * (* get_parameter_type) (GAction *action);
const GVariantType * (* get_state_type) (GAction *action);
GVariant * (* get_state_hint) (GAction *action);
gboolean (* get_enabled) (GAction *action);
GVariant * (* get_state) (GAction *action);
void (* set_state) (GAction *action,
GVariant *state);
/*< private >*/
gpointer vfunc_padding[6];
/*< public >*/
/* signals */
void (* activate) (GAction *action,
GVariant *parameter);
/*< private >*/
gpointer signal_padding[6];
};
GType g_action_get_type (void) G_GNUC_CONST;
GAction * g_action_new (const gchar *name,
const GVariantType *parameter_type);
GAction * g_action_new_stateful (const gchar *name,
const GVariantType *parameter_type,
GVariant *state);
const gchar * g_action_get_name (GAction *action);
const GVariantType * g_action_get_parameter_type (GAction *action);
const GVariantType * g_action_get_state_type (GAction *action);
GVariant * g_action_get_state_hint (GAction *action);
gboolean g_action_get_enabled (GAction *action);
void g_action_set_enabled (GAction *action,
gboolean enabled);
GVariant * g_action_get_state (GAction *action);
void g_action_set_state (GAction *action,
GVariant *value);

2
gio/gactiongroup.c
View File

@ -338,7 +338,7 @@ g_action_group_get_enabled (GActionGroup *action_group,
* The return value (if non-%NULL) should be freed with
* g_variant_unref() when it is no longer required.
*
* Return value: (allow-none) (transfer-none): the current state of the action
* Return value: (allow-none): the current state of the action
*
* Since: 2.26
**/

1
gio/gio.h
View File

@ -29,6 +29,7 @@
#include <gio/gappinfo.h>
#include <gio/gaction.h>
#include <gio/gsimpleaction.h>
#include <gio/gactiongroup.h>
#include <gio/gsimpleactiongroup.h>
#include <gio/gapplication.h>

1
gio/giotypes.h
View File

@ -49,6 +49,7 @@ typedef struct _GZlibDecompressor GZlibDecompressor;
typedef struct _GSimpleActionGroup GSimpleActionGroup;
typedef struct _GActionGroup GActionGroup;
typedef struct _GSimpleAction GSimpleAction;
typedef struct _GAction GAction;
typedef struct _GSettingsBackend GSettingsBackend;
typedef struct _GSettings GSettings;

498
gio/gsimpleaction.c Normal file
View File

@ -0,0 +1,498 @@
/*
* 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 "gsimpleaction.h"
#include "gaction.h"
#include "glibintl.h"
static void g_simple_action_iface_init (GActionInterface *iface);
G_DEFINE_TYPE_WITH_CODE (GSimpleAction, g_simple_action, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION, g_simple_action_iface_init))
/**
* SECTION:gsimpleaction
* @title: GSimpleAction
* @short_description: a simple #GSimpleAction
*
* A #GSimpleAction is the obvious simple implementation of the #GSimpleAction
* interface. This is the easiest way to create an action for purposes of
* adding it to a #GSimpleActionGroup.
*
* See also #GtkAction.
**/
struct _GSimpleActionPrivate
{
gchar *name;
GVariantType *parameter_type;
guint enabled : 1;
guint state_set : 1;
GVariant *state;
};
enum
{
PROP_NONE,
PROP_NAME,
PROP_PARAMETER_TYPE,
PROP_ENABLED,
PROP_STATE_TYPE,
PROP_STATE
};
enum
{
SIGNAL_ACTIVATE,
NR_SIGNALS
};
static guint g_simple_action_signals[NR_SIGNALS];
static const gchar *
g_simple_action_get_name (GAction *action)
{
GSimpleAction *simple = G_SIMPLE_ACTION (action);
return simple->priv->name;
}
const GVariantType *
g_simple_action_get_parameter_type (GAction *action)
{
GSimpleAction *simple = G_SIMPLE_ACTION (action);
return simple->priv->parameter_type;
}
static const GVariantType *
g_simple_action_get_state_type (GAction *action)
{
GSimpleAction *simple = G_SIMPLE_ACTION (action);
if (simple->priv->state != NULL)
return g_variant_get_type (simple->priv->state);
else
return NULL;
}
static GVariant *
g_simple_action_get_state_hint (GAction *action)
{
return NULL;
}
static gboolean
g_simple_action_get_enabled (GAction *action)
{
GSimpleAction *simple = G_SIMPLE_ACTION (action);
return simple->priv->enabled;
}
static void
g_simple_action_set_state (GAction *action,
GVariant *value)
{
GSimpleAction *simple = G_SIMPLE_ACTION (action);
g_return_if_fail (value != NULL);
{
const GVariantType *state_type;
state_type = simple->priv->state ?
g_variant_get_type (simple->priv->state) : NULL;
g_return_if_fail (state_type != NULL);
g_return_if_fail (g_variant_is_of_type (value, state_type));
}
g_variant_ref_sink (value);
if (!g_variant_equal (simple->priv->state, value))
{
if (simple->priv->state)
g_variant_unref (simple->priv->state);
simple->priv->state = g_variant_ref (value);
g_object_notify (G_OBJECT (simple), "state");
}
g_variant_unref (value);
}
static GVariant *
g_simple_action_get_state (GAction *action)
{
GSimpleAction *simple = G_SIMPLE_ACTION (action);
return simple->priv->state ? g_variant_ref (simple->priv->state) : NULL;
}
static void
g_simple_action_activate (GAction *action,
GVariant *parameter)
{
GSimpleAction *simple = G_SIMPLE_ACTION (action);
g_return_if_fail (simple->priv->parameter_type == NULL ?
parameter == NULL :
(parameter != NULL &&
g_variant_is_of_type (parameter,
simple->priv->parameter_type)));
if (parameter != NULL)
g_variant_ref_sink (parameter);
if (simple->priv->enabled)
g_signal_emit (simple, g_simple_action_signals[SIGNAL_ACTIVATE], 0, parameter);
if (parameter != NULL)
g_variant_unref (parameter);
}
static void
g_simple_action_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GSimpleAction *simple = G_SIMPLE_ACTION (object);
switch (prop_id)
{
case PROP_NAME:
g_assert (simple->priv->name == NULL);
simple->priv->name = g_value_dup_string (value);
break;
case PROP_PARAMETER_TYPE:
g_assert (simple->priv->parameter_type == NULL);
simple->priv->parameter_type = g_value_dup_boxed (value);
break;
case PROP_ENABLED:
g_simple_action_set_enabled (simple, g_value_get_boolean (value));
break;
case PROP_STATE:
/* PROP_STATE is marked as G_PARAM_CONSTRUCT so we always get a
* call during object construction, even if it is NULL. We treat
* that first call differently, for a number of reasons.
*
* First, we don't want the value to be rejected by the
* possibly-overridden .set_state() function. Second, we don't
* want to be tripped by the assertions in g_simple_action_set_state()
* that would enforce the catch22 that we only provide a value of
* the same type as the existing value (when there is not yet an
* existing value).
*/
if (simple->priv->state_set)
g_simple_action_set_state (G_ACTION (simple),
g_value_get_variant (value));
else /* this is the special case */
{
/* only do it the first time. */
simple->priv->state_set = TRUE;
/* blindly set it. */
simple->priv->state = g_value_dup_variant (value);
}
break;
default:
g_assert_not_reached ();
}
}
static void
g_simple_action_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GAction *action = G_ACTION (object);
switch (prop_id)
{
case PROP_NAME:
g_value_set_string (value, g_simple_action_get_name (action));
break;
case PROP_PARAMETER_TYPE:
g_value_set_boxed (value, g_simple_action_get_parameter_type (action));
break;
case PROP_ENABLED:
g_value_set_boolean (value, g_simple_action_get_enabled (action));
break;
case PROP_STATE_TYPE:
g_value_set_boxed (value, g_simple_action_get_state_type (action));
break;
case PROP_STATE:
g_value_take_variant (value, g_simple_action_get_state (action));
break;
default:
g_assert_not_reached ();
}
}
static void
g_simple_action_finalize (GObject *object)
{
GSimpleAction *simple = G_SIMPLE_ACTION (object);
g_free (simple->priv->name);
if (simple->priv->parameter_type)
g_variant_type_free (simple->priv->parameter_type);
if (simple->priv->state)
g_variant_unref (simple->priv->state);
G_OBJECT_CLASS (g_simple_action_parent_class)
->finalize (object);
}
void
g_simple_action_init (GSimpleAction *simple)
{
simple->priv = G_TYPE_INSTANCE_GET_PRIVATE (simple,
G_TYPE_SIMPLE_ACTION,
GSimpleActionPrivate);
}
void
g_simple_action_iface_init (GActionInterface *iface)
{
iface->get_name = g_simple_action_get_name;
iface->get_parameter_type = g_simple_action_get_parameter_type;
iface->get_state_type = g_simple_action_get_state_type;
iface->get_state_hint = g_simple_action_get_state_hint;
iface->get_enabled = g_simple_action_get_enabled;
iface->get_state = g_simple_action_get_state;
iface->set_state = g_simple_action_set_state;
iface->activate = g_simple_action_activate;
}
void
g_simple_action_class_init (GSimpleActionClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->get_property = g_simple_action_get_property;
object_class->set_property = g_simple_action_set_property;
object_class->finalize = g_simple_action_finalize;
/**
* GSimpleAction::activate:
* @simple: the #GSimpleAction
* @parameter: (allow-none): the parameter to the activation
*
* Indicates that the action was just activated.
*
* @parameter will always be of the expected type. In the event that
* an incorrect type was given, no signal will be emitted.
*
* Since: 2.26
*/
g_simple_action_signals[SIGNAL_ACTIVATE] =
g_signal_new (I_("activate"),
G_TYPE_SIMPLE_ACTION,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GSimpleActionClass, activate),
NULL, NULL,
g_cclosure_marshal_VOID__VARIANT,
G_TYPE_NONE, 1,
G_TYPE_VARIANT);
/**
* GSimpleAction:name:
*
* The name of the action. This is mostly meaningful for identifying
* the action once it has been added to a #GSimpleActionGroup.
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_NAME,
g_param_spec_string ("name",
P_("Action Name"),
P_("The name used to invoke the action"),
NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
/**
* GSimpleAction:parameter-type:
*
* The type of the parameter that must be given when activating the
* action.
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_PARAMETER_TYPE,
g_param_spec_boxed ("parameter-type",
P_("Parameter Type"),
P_("The type of GVariant passed to activate()"),
G_TYPE_VARIANT_TYPE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
/**
* GSimpleAction:enabled:
*
* If @action is currently enabled.
*
* If the action is disabled then calls to g_simple_action_activate() and
* g_simple_action_set_state() have no effect.
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_ENABLED,
g_param_spec_boolean ("enabled",
P_("Enabled"),
P_("If the action can be activated"),
TRUE,
G_PARAM_CONSTRUCT |
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
/**
* GSimpleAction:state-type:
*
* The #GVariantType of the state that the action has, or %NULL if the
* action is stateless.
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_STATE_TYPE,
g_param_spec_boxed ("state-type",
P_("State Type"),
P_("The type of the state kept by the action"),
G_TYPE_VARIANT_TYPE,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
* GSimpleAction:state:
*
* The state of the action, or %NULL if the action is stateless.
*
* Since: 2.26
**/
g_object_class_install_property (object_class, PROP_STATE,
g_param_spec_variant ("state",
P_("State"),
P_("The state the action is in"),
G_VARIANT_TYPE_ANY,
NULL,
G_PARAM_CONSTRUCT |
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
g_type_class_add_private (class, sizeof (GSimpleActionPrivate));
}
/**
* g_simple_action_set_enabled:
* @simple: a #GSimpleAction
* @enabled: whether the action is enabled
*
* Sets the action as enabled or not.
*
* An action must be enabled in order to be activated or in order to
* have its state changed from outside callers.
*
* Since: 2.26
**/
void
g_simple_action_set_enabled (GSimpleAction *simple,
gboolean enabled)
{
g_return_if_fail (G_IS_SIMPLE_ACTION (simple));
enabled = !!enabled;
if (simple->priv->enabled != enabled)
{
simple->priv->enabled = enabled;
g_object_notify (G_OBJECT (simple), "enabled");
}
}
/**
* g_simple_action_new:
* @name: the name of the action
* @parameter_type: (allow-none): the type of parameter to the activate function
*
* Creates a new action.
*
* The created action is stateless. See g_simple_action_new_stateful().
*
* Returns: a new #GSimpleAction
*
* Since: 2.26
**/
GSimpleAction *
g_simple_action_new (const gchar *name,
const GVariantType *parameter_type)
{
return g_object_new (G_TYPE_SIMPLE_ACTION,
"name", name,
"parameter-type", parameter_type,
NULL);
}
/**
* g_simple_action_new_stateful:
* @name: the name of the action
* @parameter_type: (allow-none): the type of the parameter to the activate function
* @state: the initial state of the action
*
* Creates a new stateful action.
*
* @state is the initial state of the action. All future state values
* must have the same #GVariantType as the initial state.
*
* If the @state GVariant is floating, it is consumed.
*
* Returns: a new #GSimpleAction
*
* Since: 2.26
**/
GSimpleAction *
g_simple_action_new_stateful (const gchar *name,
const GVariantType *parameter_type,
GVariant *state)
{
return g_object_new (G_TYPE_SIMPLE_ACTION,
"name", name,
"parameter-type", parameter_type,
"state", state,
NULL);
}

95
gio/gsimpleaction.h Normal file
View File

@ -0,0 +1,95 @@
/*
* 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>
*/
#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
#error "Only <gio/gio.h> can be included directly."
#endif
#ifndef __G_SIMPLE_ACTION_H__
#define __G_SIMPLE_ACTION_H__
#include <gio/giotypes.h>
G_BEGIN_DECLS
#define G_TYPE_SIMPLE_ACTION (g_simple_action_get_type ())
#define G_SIMPLE_ACTION(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
G_TYPE_SIMPLE_ACTION, GSimpleAction))
#define G_SIMPLE_ACTION_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), \
G_TYPE_SIMPLE_ACTION, GSimpleActionClass))
#define G_IS_SIMPLE_ACTION(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
G_TYPE_SIMPLE_ACTION))
#define G_IS_SIMPLE_ACTION_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), \
G_TYPE_SIMPLE_ACTION))
#define G_SIMPLE_ACTION_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), \
G_TYPE_SIMPLE_ACTION, GSimpleActionClass))
typedef struct _GSimpleActionPrivate GSimpleActionPrivate;
typedef struct _GSimpleActionClass GSimpleActionClass;
/**
* GSimpleAction:
*
* The <structname>GSimpleAction</structname> structure contains private
* data and should only be accessed using the provided API
*
* Since: 2.26
*/
struct _GSimpleAction
{
/*< private >*/
GObject parent_instance;
GSimpleActionPrivate *priv;
};
/**
* GSimpleActionClass:
* @activate: the class closure for the activate signal
*
* Since: 2.26
*/
struct _GSimpleActionClass
{
GObjectClass parent_class;
/* signals */
void (* activate) (GSimpleAction *simple,
GVariant *parameter);
/*< private >*/
gpointer padding[6];
};
GType g_simple_action_get_type (void) G_GNUC_CONST;
GSimpleAction * g_simple_action_new (const gchar *name,
const GVariantType *parameter_type);
GSimpleAction * g_simple_action_new_stateful (const gchar *name,
const GVariantType *parameter_type,
GVariant *state);
void g_simple_action_set_enabled (GSimpleAction *simple,
gboolean enabled);
G_END_DECLS
#endif /* __G_SIMPLE_ACTION_H__ */

83
gio/tests/actions.c
View File

@ -25,19 +25,19 @@ static void
test_basic (void)
{
Activation a = { 0, };
GAction *action;
const gchar *name;
GSimpleAction *action;
gchar *name;
GVariantType *parameter_type;
gboolean enabled;
GVariantType *state_type;
GVariant *state;
action = g_action_new ("foo", NULL);
g_assert (g_action_get_enabled (action));
g_assert (g_action_get_parameter_type (action) == NULL);
g_assert (g_action_get_state_type (action) == NULL);
g_assert (g_action_get_state_hint (action) == NULL);
g_assert (g_action_get_state (action) == NULL);
action = g_simple_action_new ("foo", NULL);
g_assert (g_action_get_enabled (G_ACTION (action)));
g_assert (g_action_get_parameter_type (G_ACTION (action)) == NULL);
g_assert (g_action_get_state_type (G_ACTION (action)) == NULL);
g_assert (g_action_get_state_hint (G_ACTION (action)) == NULL);
g_assert (g_action_get_state (G_ACTION (action)) == NULL);
g_object_get (action,
"name", &name,
"parameter-type", &parameter_type,
@ -54,17 +54,17 @@ test_basic (void)
g_signal_connect (action, "activate", G_CALLBACK (activate), &a);
g_assert (!a.did_run);
g_action_activate (action, NULL);
g_action_activate (G_ACTION (action), NULL);
g_assert (a.did_run);
a.did_run = FALSE;
g_action_set_enabled (action, FALSE);
g_action_activate (action, NULL);
g_simple_action_set_enabled (action, FALSE);
g_action_activate (G_ACTION (action), NULL);
g_assert (!a.did_run);
if (g_test_trap_fork (0, G_TEST_TRAP_SILENCE_STDERR))
{
g_action_activate (action, g_variant_new_string ("xxx"));
g_action_activate (G_ACTION (action), g_variant_new_string ("xxx"));
exit (0);
}
g_test_trap_assert_failed ();
@ -72,16 +72,16 @@ test_basic (void)
g_object_unref (action);
g_assert (!a.did_run);
action = g_action_new ("foo", G_VARIANT_TYPE_STRING);
g_assert (g_action_get_enabled (action));
g_assert (g_variant_type_equal (g_action_get_parameter_type (action), G_VARIANT_TYPE_STRING));
g_assert (g_action_get_state_type (action) == NULL);
g_assert (g_action_get_state_hint (action) == NULL);
g_assert (g_action_get_state (action) == NULL);
action = g_simple_action_new ("foo", G_VARIANT_TYPE_STRING);
g_assert (g_action_get_enabled (G_ACTION (action)));
g_assert (g_variant_type_equal (g_action_get_parameter_type (G_ACTION (action)), G_VARIANT_TYPE_STRING));
g_assert (g_action_get_state_type (G_ACTION (action)) == NULL);
g_assert (g_action_get_state_hint (G_ACTION (action)) == NULL);
g_assert (g_action_get_state (G_ACTION (action)) == NULL);
g_signal_connect (action, "activate", G_CALLBACK (activate), &a);
g_assert (!a.did_run);
g_action_activate (action, g_variant_new_string ("Hello world"));
g_action_activate (G_ACTION (action), g_variant_new_string ("Hello world"));
g_assert (a.did_run);
g_assert_cmpstr (g_variant_get_string (a.params, NULL), ==, "Hello world");
g_variant_unref (a.params);
@ -89,7 +89,7 @@ test_basic (void)
if (g_test_trap_fork (0, G_TEST_TRAP_SILENCE_STDERR))
{
g_action_activate (action, NULL);
g_action_activate (G_ACTION (action), NULL);
exit (0);
}
@ -149,28 +149,29 @@ test_simple_group (void)
{
GSimpleActionGroup *group;
Activation a = { 0, };
GSimpleAction *simple;
GAction *action;
gchar **actions;
GVariant *state;
action = g_action_new ("foo", NULL);
g_signal_connect (action, "activate", G_CALLBACK (activate), &a);
simple = g_simple_action_new ("foo", NULL);
g_signal_connect (simple, "activate", G_CALLBACK (activate), &a);
g_assert (!a.did_run);
g_action_activate (action, NULL);
g_action_activate (G_ACTION (simple), NULL);
g_assert (a.did_run);
a.did_run = FALSE;
group = g_simple_action_group_new ();
g_simple_action_group_insert (group, action);
g_object_unref (action);
g_simple_action_group_insert (group, G_ACTION (simple));
g_object_unref (simple);
g_assert (!a.did_run);
g_action_group_activate (G_ACTION_GROUP (group), "foo", NULL);
g_assert (a.did_run);
action = g_action_new_stateful ("bar", G_VARIANT_TYPE_STRING, g_variant_new_string ("hihi"));
g_simple_action_group_insert (group, action);
g_object_unref (action);
simple = g_simple_action_new_stateful ("bar", G_VARIANT_TYPE_STRING, g_variant_new_string ("hihi"));
g_simple_action_group_insert (group, G_ACTION (simple));
g_object_unref (simple);
g_assert (g_action_group_has_action (G_ACTION_GROUP (group), "foo"));
g_assert (g_action_group_has_action (G_ACTION_GROUP (group), "bar"));
@ -199,7 +200,7 @@ test_simple_group (void)
g_variant_unref (state);
action = g_simple_action_group_lookup (group, "bar");
g_action_set_enabled (action, FALSE);
g_simple_action_set_enabled (G_SIMPLE_ACTION (action), FALSE);
g_assert (!g_action_group_get_enabled (G_ACTION_GROUP (group), "bar"));
g_simple_action_group_remove (group, "bar");
@ -216,37 +217,37 @@ test_simple_group (void)
static void
test_stateful (void)
{
GSimpleAction *action;
GVariant *state;
GAction *action;
action = g_action_new_stateful ("foo", NULL, g_variant_new_string ("hihi"));
g_assert (g_action_get_enabled (action));
g_assert (g_action_get_parameter_type (action) == NULL);
g_assert (g_action_get_state_hint (action) == NULL);
g_assert (g_variant_type_equal (g_action_get_state_type (action),
action = g_simple_action_new_stateful ("foo", NULL, g_variant_new_string ("hihi"));
g_assert (g_action_get_enabled (G_ACTION (action)));
g_assert (g_action_get_parameter_type (G_ACTION (action)) == NULL);
g_assert (g_action_get_state_hint (G_ACTION (action)) == NULL);
g_assert (g_variant_type_equal (g_action_get_state_type (G_ACTION (action)),
G_VARIANT_TYPE_STRING));
state = g_action_get_state (action);
state = g_action_get_state (G_ACTION (action));
g_assert_cmpstr (g_variant_get_string (state, NULL), ==, "hihi");
g_variant_unref (state);
if (g_test_trap_fork (0, G_TEST_TRAP_SILENCE_STDERR))
{
g_action_set_state (action, g_variant_new_int32 (123));
g_action_set_state (G_ACTION (action), g_variant_new_int32 (123));
exit (0);
}
g_test_trap_assert_failed ();
g_action_set_state (action, g_variant_new_string ("hello"));
state = g_action_get_state (action);
g_action_set_state (G_ACTION (action), g_variant_new_string ("hello"));
state = g_action_get_state (G_ACTION (action));
g_assert_cmpstr (g_variant_get_string (state, NULL), ==, "hello");
g_variant_unref (state);
g_object_unref (action);
action = g_action_new ("foo", NULL);
action = g_simple_action_new ("foo", NULL);
if (g_test_trap_fork (0, G_TEST_TRAP_SILENCE_STDERR))
{
g_action_set_state (action, g_variant_new_int32 (123));
g_action_set_state (G_ACTION (action), g_variant_new_int32 (123));
exit (0);
}
g_test_trap_assert_failed ();