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add backend setup APIs

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This commit is contained in:
Ryan Lortie
2010-04-17 10:26:10 -04:00
parent 21f064486c
commit eaaa4d14aa
4 changed files with 114 additions and 58 deletions
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46
gio/gsettingsbackend.c
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@@ -813,6 +813,8 @@ get_default_backend (const gchar *context)
return g_object_new (type, "context", context, NULL);
}
static GHashTable *g_settings_backends;
/*< private >
* g_settings_backend_get_with_context:
* @context: a context that might be used by the backend to determine
@@ -836,17 +838,16 @@ get_default_backend (const gchar *context)
GSettingsBackend *
g_settings_backend_get_with_context (const gchar *context)
{
static GHashTable *backends;
GSettingsBackend *backend;
g_return_val_if_fail (context != NULL, NULL);
_g_io_modules_ensure_extension_points_registered ();
if (!backends)
backends = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
if (g_settings_backends == NULL)
g_settings_backends = g_hash_table_new (g_str_hash, g_str_equal);
backend = g_hash_table_lookup (backends, context);
backend = g_hash_table_lookup (g_settings_backends, context);
if (!backend)
{
@@ -855,7 +856,7 @@ g_settings_backend_get_with_context (const gchar *context)
if (!backend)
backend = g_null_settings_backend_new ();
g_hash_table_insert (backends, g_strdup (context), backend);
g_hash_table_insert (g_settings_backends, g_strdup (context), backend);
}
return g_object_ref (backend);
@@ -888,5 +889,40 @@ g_settings_backend_supports_context (const gchar *context)
return FALSE;
}
/**
* g_settings_backend_setup:
* @context: a context string (not %NULL or "")
* @backend: a #GSettingsBackend
*
* Sets up @backend for use with #GSettings.
*
* If you create a #GSettings with its context property set to @context
* then it will use the backend given to this function. See
* g_settings_new_with_context().
*
* The backend must be set up before any settings objects are created
* for the named context.
*
* It is not possible to specify a backend for the default context.
*
* This function takes a reference on @backend and never releases it.
**/
void
g_settings_backend_setup (const gchar *context,
GSettingsBackend *backend)
{
g_return_if_fail (context[0] != '\0');
if (g_settings_backends == NULL)
g_settings_backends = g_hash_table_new (g_str_hash, g_str_equal);
if (g_hash_table_lookup (g_settings_backends, context))
g_error ("A GSettingsBackend already exists for context '%s'", context);
g_hash_table_insert (g_settings_backends,
g_strdup (context),
g_object_ref (backend));
}
#define __G_SETTINGS_BACKEND_C__
#include "gioaliasdef.c"