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d732c869c2
Add the names of the main widgets as keywords to our demos, but also things like "game". This helps finding relevant demos in our growing list. You can now for example type "label", and find the "error states" and "links" demos showing GtkLabel features.
435 lines
13 KiB
C
435 lines
13 KiB
C
/* Lists/Settings
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* #Keywords: GtkListItemFactory, GListModel
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*
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* This demo shows a settings viewer for GSettings.
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*
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* It demonstrates how to implement support for trees with GtkListView.
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* It also shows how to set up sorting and filtering for columns in a
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* GtkColumnView.
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*
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* It also demonstrates different styles of list. The tree on the left
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* uses the .navigation-sidebar style class, the list on the right uses
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* the .data-table style class.
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*/
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#include <gtk/gtk.h>
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#include <stdlib.h>
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/* Create an object that wraps GSettingsSchemaKey because that's a boxed type */
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typedef struct _SettingsKey SettingsKey;
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struct _SettingsKey
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{
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GObject parent_instance;
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GSettings *settings;
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GSettingsSchemaKey *key;
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};
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enum {
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PROP_0,
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PROP_NAME,
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PROP_SUMMARY,
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PROP_DESCRIPTION,
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PROP_VALUE,
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PROP_TYPE,
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PROP_DEFAULT_VALUE,
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N_PROPS
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};
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#define SETTINGS_TYPE_KEY (settings_key_get_type ())
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G_DECLARE_FINAL_TYPE (SettingsKey, settings_key, SETTINGS, KEY, GObject);
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G_DEFINE_TYPE (SettingsKey, settings_key, G_TYPE_OBJECT);
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static GParamSpec *properties[N_PROPS] = { NULL, };
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static void
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settings_key_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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SettingsKey *self = SETTINGS_KEY (object);
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switch (property_id)
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{
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case PROP_DESCRIPTION:
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g_value_set_string (value, g_settings_schema_key_get_description (self->key));
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break;
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case PROP_NAME:
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g_value_set_string (value, g_settings_schema_key_get_name (self->key));
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break;
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case PROP_SUMMARY:
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g_value_set_string (value, g_settings_schema_key_get_summary (self->key));
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break;
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case PROP_VALUE:
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{
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GVariant *variant = g_settings_get_value (self->settings, g_settings_schema_key_get_name (self->key));
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g_value_take_string (value, g_variant_print (variant, FALSE));
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g_variant_unref (variant);
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}
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break;
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case PROP_TYPE:
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{
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const GVariantType *type = g_settings_schema_key_get_value_type (self->key);
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g_value_set_string (value, g_variant_type_peek_string (type));
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}
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break;
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case PROP_DEFAULT_VALUE:
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{
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GVariant *variant = g_settings_schema_key_get_default_value (self->key);
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g_value_take_string (value, g_variant_print (variant, FALSE));
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g_variant_unref (variant);
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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settings_key_finalize (GObject *object)
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{
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SettingsKey *self = SETTINGS_KEY (object);
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g_object_unref (self->settings);
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g_settings_schema_key_unref (self->key);
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G_OBJECT_CLASS (settings_key_parent_class)->finalize (object);
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}
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static void
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settings_key_class_init (SettingsKeyClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = settings_key_finalize;
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gobject_class->get_property = settings_key_get_property;
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properties[PROP_DESCRIPTION] =
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g_param_spec_string ("description", NULL, NULL, NULL, G_PARAM_READABLE);
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properties[PROP_NAME] =
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g_param_spec_string ("name", NULL, NULL, NULL, G_PARAM_READABLE);
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properties[PROP_SUMMARY] =
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g_param_spec_string ("summary", NULL, NULL, NULL, G_PARAM_READABLE);
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properties[PROP_VALUE] =
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g_param_spec_string ("value", NULL, NULL, NULL, G_PARAM_READABLE);
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properties[PROP_TYPE] =
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g_param_spec_string ("type", NULL, NULL, NULL, G_PARAM_READABLE);
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properties[PROP_DEFAULT_VALUE] =
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g_param_spec_string ("default-value", NULL, NULL, NULL, G_PARAM_READABLE);
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g_object_class_install_properties (gobject_class, N_PROPS, properties);
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}
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static void
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settings_key_init (SettingsKey *self)
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{
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}
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static SettingsKey *
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settings_key_new (GSettings *settings,
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GSettingsSchemaKey *key)
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{
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SettingsKey *result = g_object_new (SETTINGS_TYPE_KEY, NULL);
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result->settings = g_object_ref (settings);
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result->key = g_settings_schema_key_ref (key);
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return result;
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}
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static void
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item_value_changed (GtkEditableLabel *label,
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GParamSpec *pspec,
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GtkListItem *item)
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{
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SettingsKey *self;
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const char *text;
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const GVariantType *type;
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GVariant *variant;
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GError *error = NULL;
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const char *name;
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char *value;
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text = gtk_editable_get_text (GTK_EDITABLE (label));
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g_object_get (item, "item", &self, NULL);
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g_object_unref (self);
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type = g_settings_schema_key_get_value_type (self->key);
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name = g_settings_schema_key_get_name (self->key);
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variant = g_variant_parse (type, text, NULL, NULL, &error);
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if (!variant)
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{
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g_warning ("%s", error->message);
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g_clear_error (&error);
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goto revert;
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}
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if (!g_settings_schema_key_range_check (self->key, variant))
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{
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g_warning ("Not a valid value for %s", name);
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goto revert;
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}
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g_settings_set_value (self->settings, name, variant);
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g_variant_unref (variant);
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return;
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revert:
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gtk_widget_error_bell (GTK_WIDGET (label));
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g_object_get (self, "value", &value, NULL);
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gtk_editable_set_text (GTK_EDITABLE (label), value);
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g_free (value);
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}
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static int
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strvcmp (gconstpointer p1,
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gconstpointer p2)
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{
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const char * const *s1 = p1;
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const char * const *s2 = p2;
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return strcmp (*s1, *s2);
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}
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static GtkFilter *current_filter;
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static gboolean
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transform_settings_to_keys (GBinding *binding,
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const GValue *from_value,
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GValue *to_value,
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gpointer data)
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{
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GtkTreeListRow *treelistrow;
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GSettings *settings;
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GSettingsSchema *schema;
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GListStore *store;
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GtkSortListModel *sort_model;
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GtkFilterListModel *filter_model;
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GtkFilter *filter;
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char **keys;
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guint i;
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treelistrow = g_value_get_object (from_value);
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if (treelistrow == NULL)
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return TRUE;
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settings = gtk_tree_list_row_get_item (treelistrow);
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g_object_get (settings, "settings-schema", &schema, NULL);
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store = g_list_store_new (SETTINGS_TYPE_KEY);
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keys = g_settings_schema_list_keys (schema);
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for (i = 0; keys[i] != NULL; i++)
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{
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GSettingsSchemaKey *almost_there = g_settings_schema_get_key (schema, keys[i]);
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SettingsKey *finally = settings_key_new (settings, almost_there);
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g_list_store_append (store, finally);
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g_object_unref (finally);
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g_settings_schema_key_unref (almost_there);
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}
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g_strfreev (keys);
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g_settings_schema_unref (schema);
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g_object_unref (settings);
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sort_model = gtk_sort_list_model_new (G_LIST_MODEL (store),
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g_object_ref (gtk_column_view_get_sorter (GTK_COLUMN_VIEW (data))));
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filter = GTK_FILTER (gtk_string_filter_new (gtk_property_expression_new (SETTINGS_TYPE_KEY, NULL, "name")));
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g_set_object (¤t_filter, filter);
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filter_model = gtk_filter_list_model_new (G_LIST_MODEL (sort_model), filter);
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g_value_take_object (to_value, gtk_no_selection_new (G_LIST_MODEL (filter_model)));
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return TRUE;
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}
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static GListModel *
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create_settings_model (gpointer item,
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gpointer unused)
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{
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GSettings *settings = item;
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char **schemas;
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GListStore *result;
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guint i;
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if (settings == NULL)
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{
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g_settings_schema_source_list_schemas (g_settings_schema_source_get_default (),
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TRUE,
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&schemas,
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NULL);
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}
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else
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{
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schemas = g_settings_list_children (settings);
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}
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if (schemas == NULL || schemas[0] == NULL)
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{
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g_free (schemas);
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return NULL;
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}
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qsort (schemas, g_strv_length (schemas), sizeof (char *), strvcmp);
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result = g_list_store_new (G_TYPE_SETTINGS);
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for (i = 0; schemas[i] != NULL; i++)
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{
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GSettings *child;
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if (settings == NULL)
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child = g_settings_new (schemas[i]);
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else
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child = g_settings_get_child (settings, schemas[i]);
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g_list_store_append (result, child);
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g_object_unref (child);
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}
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g_strfreev (schemas);
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return G_LIST_MODEL (result);
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}
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static void
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search_enabled (GtkSearchEntry *entry)
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{
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gtk_editable_set_text (GTK_EDITABLE (entry), "");
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}
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static void
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search_changed (GtkSearchEntry *entry,
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gpointer data)
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{
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const char *text = gtk_editable_get_text (GTK_EDITABLE (entry));
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if (current_filter)
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gtk_string_filter_set_search (GTK_STRING_FILTER (current_filter), text);
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}
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static void
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stop_search (GtkSearchEntry *entry,
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gpointer data)
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{
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gtk_editable_set_text (GTK_EDITABLE (entry), "");
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if (current_filter)
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gtk_string_filter_set_search (GTK_STRING_FILTER (current_filter), "");
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}
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static GtkWidget *window = NULL;
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GtkWidget *
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do_listview_settings (GtkWidget *do_widget)
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{
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if (window == NULL)
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{
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GtkWidget *listview, *columnview;
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GListModel *model;
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GtkTreeListModel *treemodel;
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GtkSingleSelection *selection;
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GtkBuilderScope *scope;
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GtkBuilder *builder;
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GtkColumnViewColumn *name_column;
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GtkColumnViewColumn *type_column;
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GtkColumnViewColumn *default_column;
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GtkColumnViewColumn *summary_column;
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GtkColumnViewColumn *description_column;
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GtkSorter *sorter;
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GActionGroup *actions;
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GAction *action;
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g_type_ensure (SETTINGS_TYPE_KEY);
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scope = gtk_builder_cscope_new ();
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gtk_builder_cscope_add_callback_symbol (GTK_BUILDER_CSCOPE (scope), "search_enabled", (GCallback)search_enabled);
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gtk_builder_cscope_add_callback_symbol (GTK_BUILDER_CSCOPE (scope), "search_changed", (GCallback)search_changed);
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gtk_builder_cscope_add_callback_symbol (GTK_BUILDER_CSCOPE (scope), "stop_search", (GCallback)stop_search);
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gtk_builder_cscope_add_callback_symbol (GTK_BUILDER_CSCOPE (scope), "item_value_changed", (GCallback)item_value_changed);
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builder = gtk_builder_new ();
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gtk_builder_set_scope (builder, scope);
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g_object_unref (scope);
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gtk_builder_add_from_resource (builder, "/listview_settings/listview_settings.ui", NULL);
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window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *) &window);
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listview = GTK_WIDGET (gtk_builder_get_object (builder, "listview"));
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columnview = GTK_WIDGET (gtk_builder_get_object (builder, "columnview"));
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type_column = GTK_COLUMN_VIEW_COLUMN (gtk_builder_get_object (builder, "type_column"));
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default_column = GTK_COLUMN_VIEW_COLUMN (gtk_builder_get_object (builder, "default_column"));
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summary_column = GTK_COLUMN_VIEW_COLUMN (gtk_builder_get_object (builder, "summary_column"));
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description_column = GTK_COLUMN_VIEW_COLUMN (gtk_builder_get_object (builder, "description_column"));
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actions = G_ACTION_GROUP (g_simple_action_group_new ());
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action = G_ACTION (g_property_action_new ("show-type", type_column, "visible"));
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g_action_map_add_action (G_ACTION_MAP (actions), action);
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g_object_unref (action);
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action = G_ACTION (g_property_action_new ("show-default", default_column, "visible"));
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g_action_map_add_action (G_ACTION_MAP (actions), action);
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g_object_unref (action);
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action = G_ACTION (g_property_action_new ("show-summary", summary_column, "visible"));
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g_action_map_add_action (G_ACTION_MAP (actions), action);
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g_object_unref (action);
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action = G_ACTION (g_property_action_new ("show-description", description_column, "visible"));
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g_action_map_add_action (G_ACTION_MAP (actions), action);
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g_object_unref (action);
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gtk_widget_insert_action_group (columnview, "columnview", actions);
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g_object_unref (actions);
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model = create_settings_model (NULL, NULL);
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treemodel = gtk_tree_list_model_new (model,
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FALSE,
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TRUE,
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create_settings_model,
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NULL,
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NULL);
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selection = gtk_single_selection_new (G_LIST_MODEL (treemodel));
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g_object_bind_property_full (selection, "selected-item",
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columnview, "model",
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G_BINDING_SYNC_CREATE,
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transform_settings_to_keys,
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NULL,
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columnview, NULL);
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gtk_list_view_set_model (GTK_LIST_VIEW (listview), GTK_SELECTION_MODEL (selection));
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g_object_unref (selection);
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name_column = GTK_COLUMN_VIEW_COLUMN (gtk_builder_get_object (builder, "name_column"));
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sorter = GTK_SORTER (gtk_string_sorter_new (gtk_property_expression_new (SETTINGS_TYPE_KEY, NULL, "name")));
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gtk_column_view_column_set_sorter (name_column, sorter);
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g_object_unref (sorter);
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g_object_unref (builder);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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