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This commit is contained in:
Ryan Lortie
2010-04-14 17:59:52 -04:00
parent 2e491134a5
commit 1908b1c61b
8 changed files with 460 additions and 646 deletions
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143
gio/gsettingsbackend.c
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@@ -23,7 +23,7 @@
#include "config.h"
#include "gsettingsbackend.h"
#include "gsettingsbackendinternal.h"
#include "gmemorysettingsbackend.h"
#include "giomodule-priv.h"
#include "gio-marshal.h"
@@ -35,19 +35,18 @@
#include "gioalias.h"
G_DEFINE_ABSTRACT_TYPE (GSettingsBackend, g_settings_backend, G_TYPE_OBJECT)
typedef struct _GSettingsBackendWatch GSettingsBackendWatch;
struct _GSettingsBackendPrivate
{
GSettingsBackendWatch *watches;
gchar *context;
};
G_DEFINE_ABSTRACT_TYPE (GSettingsBackend, g_settings_backend, G_TYPE_OBJECT)
static guint writable_changed_signal;
static guint keys_changed_signal;
static guint changed_signal;
enum {
PROP_ZERO,
PROP_0,
PROP_CONTEXT
};
@@ -72,6 +71,61 @@ enum {
* suitable trees.
**/
struct _GSettingsBackendWatch
{
GSettingsBackendChangedFunc changed;
GSettingsBackendPathChangedFunc path_changed;
GSettingsBackendKeysChangedFunc keys_changed;
GSettingsBackendWritableChangedFunc writable_changed;
GSettingsBackendPathWritableChangedFunc path_writable_changed;
gpointer user_data;
GSettingsBackendWatch *next;
};
void
g_settings_backend_watch (GSettingsBackend *backend,
GSettingsBackendChangedFunc changed,
GSettingsBackendPathChangedFunc path,
GSettingsBackendKeysChangedFunc keys,
GSettingsBackendWritableChangedFunc writable,
GSettingsBackendPathWritableChangedFunc path_writable,
gpointer user_data)
{
GSettingsBackendWatch *watch;
watch = g_slice_new (GSettingsBackendWatch);
watch->changed = changed;
watch->path_changed = path;
watch->keys_changed = keys;
watch->writable_changed = writable;
watch->path_writable_changed = path_writable;
watch->user_data = user_data;
watch->next = backend->priv->watches;
backend->priv->watches = watch;
}
void
g_settings_backend_unwatch (GSettingsBackend *backend,
gpointer user_data)
{
GSettingsBackendWatch **ptr;
for (ptr = &backend->priv->watches; *ptr; ptr = &(*ptr)->next)
if ((*ptr)->user_data == user_data)
{
GSettingsBackendWatch *tmp = *ptr;
*ptr = tmp->next;
g_slice_free (GSettingsBackendWatch, tmp);
return;
}
g_assert_not_reached ();
}
/**
* g_settings_backend_changed:
* @backend: a #GSettingsBackend implementation
@@ -108,10 +162,13 @@ g_settings_backend_changed (GSettingsBackend *backend,
const gchar *name,
gpointer origin_tag)
{
GSettingsBackendWatch *watch;
g_return_if_fail (backend != NULL);
g_return_if_fail (name != NULL);
g_signal_emit (backend, changed_signal, 0, name, origin_tag);
for (watch = backend->priv->watches; watch; watch = watch->next)
watch->changed (backend, name, origin_tag, watch->user_data);
}
/**
@@ -154,18 +211,27 @@ g_settings_backend_keys_changed (GSettingsBackend *backend,
gchar const * const *items,
gpointer origin_tag)
{
GSettingsBackendWatch *watch;
g_return_if_fail (backend != NULL);
g_return_if_fail (prefix != NULL);
g_return_if_fail (items != NULL);
g_signal_emit (backend, keys_changed_signal, 0, prefix, items, origin_tag);
for (watch = backend->priv->watches; watch; watch = watch->next)
watch->keys_changed (backend, prefix, items, origin_tag, watch->user_data);
}
void
g_settings_backend_writable_changed (GSettingsBackend *backend,
const gchar *name)
{
g_signal_emit (backend, writable_changed_signal, 0, name);
GSettingsBackendWatch *watch;
g_return_if_fail (backend != NULL);
g_return_if_fail (name != NULL);
for (watch = backend->priv->watches; watch; watch = watch->next)
watch->writable_changed (backend, name, watch->user_data);
}
static gboolean
@@ -194,6 +260,7 @@ g_settings_backend_changed_tree (GSettingsBackend *backend,
GTree *tree,
gpointer origin_tag)
{
GSettingsBackendWatch *watch;
gchar **list;
list = g_new (gchar *, g_tree_nnodes (tree) + 1);
@@ -206,8 +273,10 @@ g_settings_backend_changed_tree (GSettingsBackend *backend,
g_assert (list + g_tree_nnodes (tree) == ptr);
}
g_signal_emit (backend, changed_signal, 0,
"", list, g_tree_nnodes (tree), origin_tag);
for (watch = backend->priv->watches; watch; watch = watch->next)
watch->keys_changed (backend, "/",
(const gchar * const *) list,
origin_tag, watch->user_data);
g_free (list);
}
@@ -431,52 +500,6 @@ g_settings_backend_class_init (GSettingsBackendClass *class)
g_type_class_add_private (class, sizeof (GSettingsBackendPrivate));
/**
* GSettingsBackend::changed:
* @backend: the object on which the signal was emitted
* @prefix: a common prefix of the changed keys
* @items: the list of changed keys
* @origin_tag: the origin tag
*
* The "changed" signal gets emitted when one or more keys change
* in the #GSettingsBackend store. The new values of all updated
* keys will be visible to any signal callbacks.
*
* The list of changed keys, relative to the root of the settings store,
* is @prefix prepended to each of the @items. It must either be the
* case that @prefix is equal to "" or ends in "/" or that @items
* contains exactly one item: "". @prefix need not be the largest
* possible prefix.
*
* Since: 2.26
*/
changed_signal =
g_signal_new ("changed", G_TYPE_SETTINGS_BACKEND,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GSettingsBackendClass, changed),
NULL, NULL,
_gio_marshal_VOID__STRING_POINTER, G_TYPE_NONE,
2, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE |
G_TYPE_POINTER);
keys_changed_signal =
g_signal_new ("keys-changed", G_TYPE_SETTINGS_BACKEND,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GSettingsBackendClass, keys_changed),
NULL, NULL,
_gio_marshal_VOID__STRING_BOXED_POINTER, G_TYPE_NONE,
3, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE,
G_TYPE_STRV | G_SIGNAL_TYPE_STATIC_SCOPE, G_TYPE_POINTER);
writable_changed_signal =
g_signal_new ("writable-changed", G_TYPE_SETTINGS_BACKEND,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GSettingsBackendClass, writable_changed),
NULL, NULL,
_gio_marshal_VOID__STRING_POINTER, G_TYPE_NONE,
2, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE |
G_TYPE_POINTER);
/**
* GSettingsBackend:context:
*