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app: extract GtkApplicationAccels private class

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This has several benefits:
- Less code in GtkApplication. The accels handling is something
  self-contained, and GtkApplication now delegates the work.
- For the accels functions, there is now a distinction between static
  functions and functions in the gtkapplicationaccelsprivate.h header,
  which makes the code easier to understand, because we have a good
  overview just by reading the header.
- The struct _GtkApplicationPrivate is now easier to find instead of
  being in the middle of the file.

https://bugzilla.gnome.org/show_bug.cgi?id=764879
This commit is contained in:
Sébastien Wilmet 2016-04-11 17:13:09 +02:00
parent e0c34fd028
commit bce4a0abde
5 changed files with 553 additions and 426 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
docs/reference/gtk/Makefile.am
View File

@ -27,6 +27,7 @@ IGNORE_HFILES = \
gtkadjustmentprivate.h \
gtkallocatedbitmaskprivate.h \
gtkappchooserprivate.h \
gtkapplicationaccelsprivate.h \
gtkapplicationprivate.h \
gtkbindingsprivate.h \
gtkbitmaskprivate.h \

2
gtk/Makefile.am
View File

@ -366,6 +366,7 @@ gtk_private_h_sources = \
gtkactionobserver.h \
gtkactionobservable.h \
gtkadjustmentprivate.h \
gtkapplicationaccelsprivate.h \
gtkapplicationprivate.h \
gtkaccelgroupprivate.h \
gtkaccelmapprivate.h \
@ -616,6 +617,7 @@ gtk_base_c_sources = \
gtkappchooserbutton.c \
gtkappchooserdialog.c \
gtkapplication.c \
gtkapplicationaccels.c \
gtkapplicationimpl.c \
gtkapplicationwindow.c \
gtkaspectframe.c \

436
gtk/gtkapplication.c
View File

@ -28,9 +28,8 @@
#include <unistd.h>
#endif
#include <string.h>
#include "gtkapplicationprivate.h"
#include "gtkapplicationaccelsprivate.h"
#include "gtkclipboardprivate.h"
#include "gtkmarshalers.h"
#include "gtkmain.h"
@ -147,429 +146,15 @@ enum {
static GParamSpec *gtk_application_props[NUM_PROPERTIES];
/* Prototypes */
static gchar * normalise_detailed_name (const gchar *detailed_action_name);
/* Accel handling */
typedef struct
{
guint key;
GdkModifierType modifier;
} AccelKey;
typedef struct
{
GHashTable *action_to_accels;
GHashTable *accel_to_actions;
} Accels;
static AccelKey *
accel_key_copy (const AccelKey *source)
{
AccelKey *dest;
dest = g_slice_new (AccelKey);
dest->key = source->key;
dest->modifier = source->modifier;
return dest;
}
static void
accel_key_free (gpointer data)
{
AccelKey *key = data;
g_slice_free (AccelKey, key);
}
static guint
accel_key_hash (gconstpointer data)
{
const AccelKey *key = data;
return key->key + (key->modifier << 16);
}
static gboolean
accel_key_equal (gconstpointer a,
gconstpointer b)
{
const AccelKey *ak = a;
const AccelKey *bk = b;
return ak->key == bk->key && ak->modifier == bk->modifier;
}
static void
gtk_application_accels_foreach_key (Accels *accels,
GtkWindow *window,
GtkWindowKeysForeachFunc callback,
gpointer user_data)
{
GHashTableIter iter;
gpointer key;
g_hash_table_iter_init (&iter, accels->accel_to_actions);
while (g_hash_table_iter_next (&iter, &key, NULL))
{
AccelKey *accel_key = key;
(* callback) (window, accel_key->key, accel_key->modifier, FALSE, user_data);
}
}
static gboolean
gtk_application_accels_activate (Accels *accels,
GActionGroup *action_group,
guint key,
GdkModifierType modifier)
{
AccelKey accel_key = { key, modifier };
const gchar **actions;
gint i;
actions = g_hash_table_lookup (accels->accel_to_actions, &accel_key);
if (actions == NULL)
return FALSE;
/* We may have more than one action on a given accel. This could be
* the case if we have different types of windows with different
* actions in each.
*
* Find the first one that will successfully activate and use it.
*/
for (i = 0; actions[i]; i++)
{
const GVariantType *parameter_type;
const gchar *action_name;
const gchar *sep;
gboolean enabled;
GVariant *target;
sep = strrchr (actions[i], '|');
action_name = sep + 1;
if (!g_action_group_query_action (action_group, action_name, &enabled, &parameter_type, NULL, NULL, NULL))
continue;
if (!enabled)
continue;
/* We found an action with the correct name and it's enabled.
* This is the action that we are going to try to invoke.
*
* There is still the possibility that the target value doesn't
* match the expected parameter type. In that case, we will print
* a warning.
*
* Note: we want to hold a ref on the target while we're invoking
* the action to prevent trouble if someone uninstalls the accel
* from the handler. That's not a problem since we're parsing it.
*/
if (actions[i] != sep) /* if it has a target... */
{
GError *error = NULL;
if (parameter_type == NULL)
{
gchar *accel_str = gtk_accelerator_name (key, modifier);
g_warning ("Accelerator '%s' tries to invoke action '%s' with target, but action has no parameter",
accel_str, action_name);
g_free (accel_str);
return TRUE;
}
target = g_variant_parse (NULL, actions[i], sep, NULL, &error);
g_assert_no_error (error);
g_assert (target);
if (!g_variant_is_of_type (target, parameter_type))
{
gchar *accel_str = gtk_accelerator_name (key, modifier);
gchar *typestr = g_variant_type_dup_string (parameter_type);
gchar *targetstr = g_variant_print (target, TRUE);
g_warning ("Accelerator '%s' tries to invoke action '%s' with target '%s',"
" but action expects parameter with type '%s'", accel_str, action_name, targetstr, typestr);
g_variant_unref (target);
g_free (targetstr);
g_free (accel_str);
g_free (typestr);
return TRUE;
}
}
else
{
if (parameter_type != NULL)
{
gchar *accel_str = gtk_accelerator_name (key, modifier);
gchar *typestr = g_variant_type_dup_string (parameter_type);
g_warning ("Accelerator '%s' tries to invoke action '%s' without target,"
" but action expects parameter with type '%s'", accel_str, action_name, typestr);
g_free (accel_str);
g_free (typestr);
return TRUE;
}
target = NULL;
}
g_action_group_activate_action (action_group, action_name, target);
if (target)
g_variant_unref (target);
return TRUE;
}
return FALSE;
}
static void
accels_add_entry (Accels *accels,
AccelKey *key,
const gchar *action_and_target)
{
const gchar **old;
const gchar **new;
gint n;
old = g_hash_table_lookup (accels->accel_to_actions, key);
if (old != NULL)
for (n = 0; old[n]; n++) /* find the length */
;
else
n = 0;
new = g_new (const gchar *, n + 1 + 1);
memcpy (new, old, n * sizeof (const gchar *));
new[n] = action_and_target;
new[n + 1] = NULL;
g_hash_table_insert (accels->accel_to_actions, accel_key_copy (key), new);
}
static void
accels_remove_entry (Accels *accels,
AccelKey *key,
const gchar *action_and_target)
{
const gchar **old;
const gchar **new;
gint n, i;
/* if we can't find the entry then something has gone very wrong... */
old = g_hash_table_lookup (accels->accel_to_actions, key);
g_assert (old != NULL);
for (n = 0; old[n]; n++) /* find the length */
;
g_assert_cmpint (n, >, 0);
if (n == 1)
{
/* The simple case of removing the last action for an accel. */
g_assert_cmpstr (old[0], ==, action_and_target);
g_hash_table_remove (accels->accel_to_actions, key);
return;
}
for (i = 0; i < n; i++)
if (g_str_equal (old[i], action_and_target))
break;
/* We must have found it... */
g_assert_cmpint (i, <, n);
new = g_new (const gchar *, n - 1 + 1);
memcpy (new, old, i * sizeof (const gchar *));
memcpy (new + i, old + i + 1, (n - (i + 1)) * sizeof (const gchar *));
new[n - 1] = NULL;
g_hash_table_insert (accels->accel_to_actions, accel_key_copy (key), new);
}
static void
gtk_application_accels_set_accels_for_action (Accels *accels,
const gchar *detailed_action_name,
const gchar * const *accelerators)
{
gchar *action_and_target;
AccelKey *keys, *old_keys;
gint i, n;
action_and_target = normalise_detailed_name (detailed_action_name);
n = accelerators ? g_strv_length ((gchar **) accelerators) : 0;
if (n > 0)
{
keys = g_new0 (AccelKey, n + 1);
for (i = 0; i < n; i++)
{
gtk_accelerator_parse (accelerators[i], &keys[i].key, &keys[i].modifier);
if (keys[i].key == 0)
{
g_warning ("Unable to parse accelerator '%s': ignored request to install %d accelerators",
accelerators[i], n);
g_free (action_and_target);
g_free (keys);
return;
}
}
}
else
keys = NULL;
old_keys = g_hash_table_lookup (accels->action_to_accels, action_and_target);
if (old_keys)
{
/* We need to remove accel entries from existing keys */
for (i = 0; old_keys[i].key; i++)
accels_remove_entry (accels, &old_keys[i], action_and_target);
}
if (keys)
{
g_hash_table_replace (accels->action_to_accels, action_and_target, keys);
for (i = 0; i < n; i++)
accels_add_entry (accels, &keys[i], action_and_target);
}
else
{
g_hash_table_remove (accels->action_to_accels, action_and_target);
g_free (action_and_target);
}
}
static gchar **
gtk_application_accels_get_accels_for_action (Accels *accels,
const gchar *detailed_action_name)
{
gchar *action_and_target;
AccelKey *keys;
gchar **result;
gint n, i = 0;
action_and_target = normalise_detailed_name (detailed_action_name);
keys = g_hash_table_lookup (accels->action_to_accels, action_and_target);
if (!keys)
{
g_free (action_and_target);
return g_new0 (gchar *, 0 + 1);
}
for (n = 0; keys[n].key; n++)
;
result = g_new0 (gchar *, n + 1);
for (i = 0; i < n; i++)
result[i] = gtk_accelerator_name (keys[i].key, keys[i].modifier);
g_free (action_and_target);
return result;
}
static gchar **
gtk_application_accels_get_actions_for_accel (Accels *accels,
const gchar *accel)
{
const gchar * const *actions_and_targets;
gchar **detailed_actions;
AccelKey accel_key;
guint i, n;
gtk_accelerator_parse (accel, &accel_key.key, &accel_key.modifier);
if (accel_key.key == 0)
{
g_critical ("invalid accelerator string '%s'", accel);
g_return_val_if_fail (accel_key.key != 0, NULL);
}
actions_and_targets = g_hash_table_lookup (accels->accel_to_actions, &accel_key);
n = actions_and_targets ? g_strv_length ((gchar **) actions_and_targets) : 0;
detailed_actions = g_new0 (gchar *, n + 1);
for (i = 0; i < n; i++)
{
const gchar *action_and_target = actions_and_targets[i];
const gchar *sep;
GVariant *target;
sep = strrchr (action_and_target, '|');
target = g_variant_parse (NULL, action_and_target, sep, NULL, NULL);
detailed_actions[i] = g_action_print_detailed_name (sep + 1, target);
if (target)
g_variant_unref (target);
}
detailed_actions[n] = NULL;
return detailed_actions;
}
static gchar **
gtk_application_accels_list_action_descriptions (Accels *accels)
{
GHashTableIter iter;
gchar **result;
gint n, i = 0;
gpointer key;
n = g_hash_table_size (accels->action_to_accels);
result = g_new (gchar *, n + 1);
g_hash_table_iter_init (&iter, accels->action_to_accels);
while (g_hash_table_iter_next (&iter, &key, NULL))
{
const gchar *action_and_target = key;
const gchar *sep;
GVariant *target;
sep = strrchr (action_and_target, '|');
target = g_variant_parse (NULL, action_and_target, sep, NULL, NULL);
result[i++] = g_action_print_detailed_name (sep + 1, target);
if (target)
g_variant_unref (target);
}
g_assert_cmpint (i, ==, n);
result[i] = NULL;
return result;
}
static void
accels_init (Accels *accels)
{
accels->accel_to_actions = g_hash_table_new_full (accel_key_hash, accel_key_equal,
accel_key_free, g_free);
accels->action_to_accels = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
}
static void
accels_finalize (Accels *accels)
{
g_hash_table_unref (accels->accel_to_actions);
g_hash_table_unref (accels->action_to_accels);
}
struct _GtkApplicationPrivate
{
GtkApplicationImpl *impl;
GtkApplicationAccels *accels;
GList *windows;
GMenuModel *app_menu;
GMenuModel *menubar;
Accels accels;
guint last_window_id;
gboolean register_session;
@ -793,7 +378,7 @@ gtk_application_init (GtkApplication *application)
application->priv->muxer = gtk_action_muxer_new ();
accels_init (&application->priv->accels);
application->priv->accels = gtk_application_accels_new ();
}
static void
@ -992,8 +577,7 @@ gtk_application_finalize (GObject *object)
g_clear_object (&application->priv->app_menu);
g_clear_object (&application->priv->menubar);
g_clear_object (&application->priv->muxer);
accels_finalize (&application->priv->accels);
g_clear_object (&application->priv->accels);
g_free (application->priv->help_overlay_path);
@ -1686,7 +1270,7 @@ gtk_application_activate_accel (GtkApplication *application,
guint key,
GdkModifierType modifier)
{
return gtk_application_accels_activate (&application->priv->accels,
return gtk_application_accels_activate (application->priv->accels,
action_group,
key,
modifier);
@ -1698,7 +1282,7 @@ gtk_application_foreach_accel_keys (GtkApplication *application,
GtkWindowKeysForeachFunc callback,
gpointer user_data)
{
gtk_application_accels_foreach_key (&application->priv->accels,
gtk_application_accels_foreach_key (application->priv->accels,
window,
callback,
user_data);
@ -1721,7 +1305,7 @@ gtk_application_list_action_descriptions (GtkApplication *application)
{
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
return gtk_application_accels_list_action_descriptions (&application->priv->accels);
return gtk_application_accels_list_action_descriptions (application->priv->accels);
}
static gchar *
@ -1776,7 +1360,7 @@ gtk_application_set_accels_for_action (GtkApplication *application,
g_return_if_fail (detailed_action_name != NULL);
g_return_if_fail (accels != NULL);
gtk_application_accels_set_accels_for_action (&application->priv->accels,
gtk_application_accels_set_accels_for_action (application->priv->accels,
detailed_action_name,
accels);
@ -1808,7 +1392,7 @@ gtk_application_get_accels_for_action (GtkApplication *application,
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
g_return_val_if_fail (detailed_action_name != NULL, NULL);
return gtk_application_accels_get_accels_for_action (&application->priv->accels,
return gtk_application_accels_get_accels_for_action (application->priv->accels,
detailed_action_name);
}
@ -1844,7 +1428,7 @@ gtk_application_get_actions_for_accel (GtkApplication *application,
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
g_return_val_if_fail (accel != NULL, NULL);
return gtk_application_accels_get_actions_for_accel (&application->priv->accels, accel);
return gtk_application_accels_get_actions_for_accel (application->priv->accels, accel);
}
GtkActionMuxer *

478
gtk/gtkapplicationaccels.c Normal file
View File

@ -0,0 +1,478 @@
/*
* Copyright © 2013 Canonical Limited
* Copyright © 2016 Sébastien Wilmet
*
* 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/>.
*
* Authors: Ryan Lortie <desrt@desrt.ca>
* Sébastien Wilmet <swilmet@gnome.org>
*/
#include "config.h"
#include "gtkapplicationaccelsprivate.h"
#include <string.h>
#include "gtkactionmuxer.h"
typedef struct
{
guint key;
GdkModifierType modifier;
} AccelKey;
struct _GtkApplicationAccels
{
GObject parent;
GHashTable *action_to_accels;
GHashTable *accel_to_actions;
};
G_DEFINE_TYPE (GtkApplicationAccels, gtk_application_accels, G_TYPE_OBJECT)
static gchar *
normalise_detailed_name (const gchar *detailed_action_name)
{
GError *error = NULL;
gchar *action_and_target;
gchar *action_name;
GVariant *target;
g_action_parse_detailed_name (detailed_action_name, &action_name, &target, &error);
g_assert_no_error (error);
action_and_target = gtk_print_action_and_target (NULL, action_name, target);
if (target)
g_variant_unref (target);
g_free (action_name);
return action_and_target;
}
static AccelKey *
accel_key_copy (const AccelKey *source)
{
AccelKey *dest;
dest = g_slice_new (AccelKey);
dest->key = source->key;
dest->modifier = source->modifier;
return dest;
}
static void
accel_key_free (gpointer data)
{
AccelKey *key = data;
g_slice_free (AccelKey, key);
}
static guint
accel_key_hash (gconstpointer data)
{
const AccelKey *key = data;
return key->key + (key->modifier << 16);
}
static gboolean
accel_key_equal (gconstpointer a,
gconstpointer b)
{
const AccelKey *ak = a;
const AccelKey *bk = b;
return ak->key == bk->key && ak->modifier == bk->modifier;
}
static void
accels_add_entry (GtkApplicationAccels *accels,
AccelKey *key,
const gchar *action_and_target)
{
const gchar **old;
const gchar **new;
gint n;
old = g_hash_table_lookup (accels->accel_to_actions, key);
if (old != NULL)
for (n = 0; old[n]; n++) /* find the length */
;
else
n = 0;
new = g_new (const gchar *, n + 1 + 1);
memcpy (new, old, n * sizeof (const gchar *));
new[n] = action_and_target;
new[n + 1] = NULL;
g_hash_table_insert (accels->accel_to_actions, accel_key_copy (key), new);
}
static void
accels_remove_entry (GtkApplicationAccels *accels,
AccelKey *key,
const gchar *action_and_target)
{
const gchar **old;
const gchar **new;
gint n, i;
/* if we can't find the entry then something has gone very wrong... */
old = g_hash_table_lookup (accels->accel_to_actions, key);
g_assert (old != NULL);
for (n = 0; old[n]; n++) /* find the length */
;
g_assert_cmpint (n, >, 0);
if (n == 1)
{
/* The simple case of removing the last action for an accel. */
g_assert_cmpstr (old[0], ==, action_and_target);
g_hash_table_remove (accels->accel_to_actions, key);
return;
}
for (i = 0; i < n; i++)
if (g_str_equal (old[i], action_and_target))
break;
/* We must have found it... */
g_assert_cmpint (i, <, n);
new = g_new (const gchar *, n - 1 + 1);
memcpy (new, old, i * sizeof (const gchar *));
memcpy (new + i, old + i + 1, (n - (i + 1)) * sizeof (const gchar *));
new[n - 1] = NULL;
g_hash_table_insert (accels->accel_to_actions, accel_key_copy (key), new);
}
static void
gtk_application_accels_finalize (GObject *object)
{
GtkApplicationAccels *accels = GTK_APPLICATION_ACCELS (object);
g_hash_table_unref (accels->accel_to_actions);
g_hash_table_unref (accels->action_to_accels);
G_OBJECT_CLASS (gtk_application_accels_parent_class)->finalize (object);
}
static void
gtk_application_accels_class_init (GtkApplicationAccelsClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_application_accels_finalize;
}
static void
gtk_application_accels_init (GtkApplicationAccels *accels)
{
accels->accel_to_actions = g_hash_table_new_full (accel_key_hash, accel_key_equal,
accel_key_free, g_free);
accels->action_to_accels = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
}
GtkApplicationAccels *
gtk_application_accels_new (void)
{
return g_object_new (GTK_TYPE_APPLICATION_ACCELS, NULL);
}
void
gtk_application_accels_set_accels_for_action (GtkApplicationAccels *accels,
const gchar *detailed_action_name,
const gchar * const *accelerators)
{
gchar *action_and_target;
AccelKey *keys, *old_keys;
gint i, n;
action_and_target = normalise_detailed_name (detailed_action_name);
n = accelerators ? g_strv_length ((gchar **) accelerators) : 0;
if (n > 0)
{
keys = g_new0 (AccelKey, n + 1);
for (i = 0; i < n; i++)
{
gtk_accelerator_parse (accelerators[i], &keys[i].key, &keys[i].modifier);
if (keys[i].key == 0)
{
g_warning ("Unable to parse accelerator '%s': ignored request to install %d accelerators",
accelerators[i], n);
g_free (action_and_target);
g_free (keys);
return;
}
}
}
else
keys = NULL;
old_keys = g_hash_table_lookup (accels->action_to_accels, action_and_target);
if (old_keys)
{
/* We need to remove accel entries from existing keys */
for (i = 0; old_keys[i].key; i++)
accels_remove_entry (accels, &old_keys[i], action_and_target);
}
if (keys)
{
g_hash_table_replace (accels->action_to_accels, action_and_target, keys);
for (i = 0; i < n; i++)
accels_add_entry (accels, &keys[i], action_and_target);
}
else
{
g_hash_table_remove (accels->action_to_accels, action_and_target);
g_free (action_and_target);
}
}
gchar **
gtk_application_accels_get_accels_for_action (GtkApplicationAccels *accels,
const gchar *detailed_action_name)
{
gchar *action_and_target;
AccelKey *keys;
gchar **result;
gint n, i = 0;
action_and_target = normalise_detailed_name (detailed_action_name);
keys = g_hash_table_lookup (accels->action_to_accels, action_and_target);
if (!keys)
{
g_free (action_and_target);
return g_new0 (gchar *, 0 + 1);
}
for (n = 0; keys[n].key; n++)
;
result = g_new0 (gchar *, n + 1);
for (i = 0; i < n; i++)
result[i] = gtk_accelerator_name (keys[i].key, keys[i].modifier);
g_free (action_and_target);
return result;
}
gchar **
gtk_application_accels_get_actions_for_accel (GtkApplicationAccels *accels,
const gchar *accel)
{
const gchar * const *actions_and_targets;
gchar **detailed_actions;
AccelKey accel_key;
guint i, n;
gtk_accelerator_parse (accel, &accel_key.key, &accel_key.modifier);
if (accel_key.key == 0)
{
g_critical ("invalid accelerator string '%s'", accel);
g_return_val_if_fail (accel_key.key != 0, NULL);
}
actions_and_targets = g_hash_table_lookup (accels->accel_to_actions, &accel_key);
n = actions_and_targets ? g_strv_length ((gchar **) actions_and_targets) : 0;
detailed_actions = g_new0 (gchar *, n + 1);
for (i = 0; i < n; i++)
{
const gchar *action_and_target = actions_and_targets[i];
const gchar *sep;
GVariant *target;
sep = strrchr (action_and_target, '|');
target = g_variant_parse (NULL, action_and_target, sep, NULL, NULL);
detailed_actions[i] = g_action_print_detailed_name (sep + 1, target);
if (target)
g_variant_unref (target);
}
detailed_actions[n] = NULL;
return detailed_actions;
}
gchar **
gtk_application_accels_list_action_descriptions (GtkApplicationAccels *accels)
{
GHashTableIter iter;
gchar **result;
gint n, i = 0;
gpointer key;
n = g_hash_table_size (accels->action_to_accels);
result = g_new (gchar *, n + 1);
g_hash_table_iter_init (&iter, accels->action_to_accels);
while (g_hash_table_iter_next (&iter, &key, NULL))
{
const gchar *action_and_target = key;
const gchar *sep;
GVariant *target;
sep = strrchr (action_and_target, '|');
target = g_variant_parse (NULL, action_and_target, sep, NULL, NULL);
result[i++] = g_action_print_detailed_name (sep + 1, target);
if (target)
g_variant_unref (target);
}
g_assert_cmpint (i, ==, n);
result[i] = NULL;
return result;
}
void
gtk_application_accels_foreach_key (GtkApplicationAccels *accels,
GtkWindow *window,
GtkWindowKeysForeachFunc callback,
gpointer user_data)
{
GHashTableIter iter;
gpointer key;
g_hash_table_iter_init (&iter, accels->accel_to_actions);
while (g_hash_table_iter_next (&iter, &key, NULL))
{
AccelKey *accel_key = key;
(* callback) (window, accel_key->key, accel_key->modifier, FALSE, user_data);
}
}
gboolean
gtk_application_accels_activate (GtkApplicationAccels *accels,
GActionGroup *action_group,
guint key,
GdkModifierType modifier)
{
AccelKey accel_key = { key, modifier };
const gchar **actions;
gint i;
actions = g_hash_table_lookup (accels->accel_to_actions, &accel_key);
if (actions == NULL)
return FALSE;
/* We may have more than one action on a given accel. This could be
* the case if we have different types of windows with different
* actions in each.
*
* Find the first one that will successfully activate and use it.
*/
for (i = 0; actions[i]; i++)
{
const GVariantType *parameter_type;
const gchar *action_name;
const gchar *sep;
gboolean enabled;
GVariant *target;
sep = strrchr (actions[i], '|');
action_name = sep + 1;
if (!g_action_group_query_action (action_group, action_name, &enabled, &parameter_type, NULL, NULL, NULL))
continue;
if (!enabled)
continue;
/* We found an action with the correct name and it's enabled.
* This is the action that we are going to try to invoke.
*
* There is still the possibility that the target value doesn't
* match the expected parameter type. In that case, we will print
* a warning.
*
* Note: we want to hold a ref on the target while we're invoking
* the action to prevent trouble if someone uninstalls the accel
* from the handler. That's not a problem since we're parsing it.
*/
if (actions[i] != sep) /* if it has a target... */
{
GError *error = NULL;
if (parameter_type == NULL)
{
gchar *accel_str = gtk_accelerator_name (key, modifier);
g_warning ("Accelerator '%s' tries to invoke action '%s' with target, but action has no parameter",
accel_str, action_name);
g_free (accel_str);
return TRUE;
}
target = g_variant_parse (NULL, actions[i], sep, NULL, &error);
g_assert_no_error (error);
g_assert (target);
if (!g_variant_is_of_type (target, parameter_type))
{
gchar *accel_str = gtk_accelerator_name (key, modifier);
gchar *typestr = g_variant_type_dup_string (parameter_type);
gchar *targetstr = g_variant_print (target, TRUE);
g_warning ("Accelerator '%s' tries to invoke action '%s' with target '%s',"
" but action expects parameter with type '%s'", accel_str, action_name, targetstr, typestr);
g_variant_unref (target);
g_free (targetstr);
g_free (accel_str);
g_free (typestr);
return TRUE;
}
}
else
{
if (parameter_type != NULL)
{
gchar *accel_str = gtk_accelerator_name (key, modifier);
gchar *typestr = g_variant_type_dup_string (parameter_type);
g_warning ("Accelerator '%s' tries to invoke action '%s' without target,"
" but action expects parameter with type '%s'", accel_str, action_name, typestr);
g_free (accel_str);
g_free (typestr);
return TRUE;
}
target = NULL;
}
g_action_group_activate_action (action_group, action_name, target);
if (target)
g_variant_unref (target);
return TRUE;
}
return FALSE;
}

62
gtk/gtkapplicationaccelsprivate.h Normal file
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@ -0,0 +1,62 @@
/*
* Copyright © 2013 Canonical Limited
* Copyright © 2016 Sébastien Wilmet
*
* 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/>.
*
* Authors: Ryan Lortie <desrt@desrt.ca>
* Sébastien Wilmet <swilmet@gnome.org>
*/
#ifndef __GTK_APPLICATION_ACCELS_H__
#define __GTK_APPLICATION_ACCELS_H__
#include <gio/gio.h>
#include "gtkwindowprivate.h"
G_BEGIN_DECLS
#define GTK_TYPE_APPLICATION_ACCELS (gtk_application_accels_get_type ())
G_DECLARE_FINAL_TYPE (GtkApplicationAccels, gtk_application_accels,
GTK, APPLICATION_ACCELS,
GObject)
GtkApplicationAccels *
gtk_application_accels_new (void);
void gtk_application_accels_set_accels_for_action (GtkApplicationAccels *accels,
const gchar *detailed_action_name,
const gchar * const *accelerators);
gchar ** gtk_application_accels_get_accels_for_action (GtkApplicationAccels *accels,
const gchar *detailed_action_name);
gchar ** gtk_application_accels_get_actions_for_accel (GtkApplicationAccels *accels,
const gchar *accel);
gchar ** gtk_application_accels_list_action_descriptions (GtkApplicationAccels *accels);
void gtk_application_accels_foreach_key (GtkApplicationAccels *accels,
GtkWindow *window,
GtkWindowKeysForeachFunc callback,
gpointer user_data);
gboolean gtk_application_accels_activate (GtkApplicationAccels *accels,
GActionGroup *action_group,
guint key,
GdkModifierType modifier);
G_END_DECLS
#endif /* __GTK_APPLICATION_ACCELS_H__ */