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GSettings: bind to writablity of a key

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This commit is contained in:
Ryan Lortie 2010-04-20 12:30:12 -04:00
parent 890a842b26
commit f5990c1aef
3 changed files with 78 additions and 31 deletions
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1
gio/gio.symbols
View File

@ -1390,6 +1390,7 @@ g_settings_backend_changed_tree
#if IN_FILE(__G_SETTINGS_C__)
g_settings_apply
g_settings_bind
g_settings_bind_writable
g_settings_bind_with_mapping
g_settings_delay
g_settings_get

103
gio/gsettings.c
View File

@ -1180,21 +1180,6 @@ g_settings_binding_key_changed (GSettings *settings,
binding->running = FALSE;
}
static void
g_settings_binding_writable_changed (GSettings *settings,
const gchar *key,
gpointer user_data)
{
GSettingsBinding *binding = user_data;
gboolean writable;
g_assert (settings == binding->settings);
g_assert (key == binding->key);
writable = g_settings_is_writable (settings, key);
g_object_set (binding->object, "sensitive", writable, NULL);
}
static void
g_settings_binding_property_changed (GObject *object,
const GParamSpec *pspec,
@ -1303,7 +1288,6 @@ g_settings_bind_with_mapping (GSettings *settings,
{
GSettingsBinding *binding;
GObjectClass *objectclass;
gboolean bind_sensitive;
gchar *detailed_signal;
GQuark binding_quark;
@ -1365,10 +1349,11 @@ g_settings_bind_with_mapping (GSettings *settings,
GParamSpec *sensitive;
sensitive = g_object_class_find_property (objectclass, "sensitive");
bind_sensitive = sensitive && sensitive->value_type == G_TYPE_BOOLEAN;
if (sensitive && sensitive->value_type == G_TYPE_BOOLEAN)
g_settings_bind_writable (settings, binding->key,
object, "sensitive", FALSE);
}
else
bind_sensitive = FALSE;
if (flags & G_SETTINGS_BIND_SET)
{
@ -1400,23 +1385,79 @@ g_settings_bind_with_mapping (GSettings *settings,
g_settings_binding_key_changed (settings, binding->key, binding);
}
if (bind_sensitive)
{
detailed_signal = g_strdup_printf ("writable-changed::%s", key);
binding->writable_handler_id =
g_signal_connect (settings, detailed_signal,
G_CALLBACK (g_settings_binding_writable_changed),
binding);
g_free (detailed_signal);
g_settings_binding_writable_changed (settings, binding->key, binding);
}
binding_quark = g_settings_binding_quark (property);
g_object_set_qdata_full (object, binding_quark,
binding, g_settings_binding_free);
}
typedef struct
{
GSettings *settings;
gpointer object;
const gchar *key;
const gchar *property;
gboolean inverted;
gulong handler_id;
} GSettingsWritableBinding;
static void
g_settings_writable_binding_free (gpointer data)
{
GSettingsWritableBinding *binding = data;
g_signal_handler_disconnect (binding->settings, binding->handler_id);
g_object_unref (binding->settings);
}
static void
g_settings_binding_writable_changed (GSettings *settings,
const gchar *key,
gpointer user_data)
{
GSettingsWritableBinding *binding = user_data;
gboolean writable;
g_assert (settings == binding->settings);
g_assert (key == binding->key);
writable = g_settings_is_writable (settings, key);
if (binding->inverted)
writable = !writable;
g_object_set (binding->object, binding->property, writable, NULL);
}
void
g_settings_bind_writable (GSettings *settings,
const gchar *key,
gpointer object,
const gchar *property,
gboolean inverted)
{
GSettingsWritableBinding *binding;
gchar *detailed_signal;
binding = g_slice_new (GSettingsWritableBinding);
binding->settings = g_object_ref (settings);
binding->object = object;
binding->property = g_intern_string (property);
binding->inverted = inverted;
detailed_signal = g_strdup_printf ("writable-changed::%s", key);
binding->handler_id =
g_signal_connect (settings, detailed_signal,
G_CALLBACK (g_settings_binding_writable_changed),
binding);
g_free (detailed_signal);
g_object_set_qdata_full (object, g_settings_binding_quark (property),
binding, g_settings_writable_binding_free);
g_settings_binding_writable_changed (settings, binding->key, binding);
}
/**
* g_settings_unbind:
* @object: the object

5
gio/gsettings.h
View File

@ -197,6 +197,11 @@ void g_settings_bind_with_mapping (GSettin
GSettingsBindSetMapping set_mapping,
gpointer user_data,
GDestroyNotify destroy);
void g_settings_bind_writable (GSettings *settings,
const gchar *key,
gpointer object,
const gchar *property,
gboolean inverted);
void g_settings_unbind (gpointer object,
const gchar *property);