gtkActivatableDoSetRelatedAction(object, action)
gtkActivatableGetRelatedAction(object)
gtkActivatableGetUseActionAppearance(object)
gtkActivatableSyncActionProperties(object, action = NULL)
gtkActivatableSetRelatedAction(object, action)
gtkActivatableSetUseActionAppearance(object, use.appearance)GtkButton, GtkCheckButton, GtkCheckMenuItem, GtkColorButton, GtkFontButton, GtkImageMenuItem, GtkLinkButton, GtkMenuItem, GtkMenuToolButton, GtkOptionMenu, GtkRadioButton, GtkRadioMenuItem, GtkRadioToolButton, GtkRecentChooserMenu, GtkScaleButton, GtkSeparatorMenuItem, GtkSeparatorToolItem, GtkTearoffMenuItem, GtkToggleButton, GtkToggleToolButton, GtkToolButton, GtkToolItem and GtkVolumeButton.GtkAction and reflects
the state of its action. A GtkActivatable can also provide feedback
through its action, as they are responsible for activating their
related actions.GtkActivatable; it is only
necessary to implement the GtkActivatable->syncActionProperties()
and GtkActivatable->update() methods and chain up to the parent
implementation, however when introducing
a new GtkActivatable class; the gtkActivatableDoSetRelatedAction and
gtkActivatableSyncActionProperties at the appropriate times.
A class fragment implementing GtkActivatableenum {
...PROP_ACTIVATABLE_RELATED_ACTION, PROP_ACTIVATABLE_USE_ACTION_APPEARANCE }
struct _FooBarPrivate {
...
GtkAction *action; gboolean use_action_appearance; };
...
static void foo_bar_activatable_interface_init (GtkActivatableIface *iface); static void foo_bar_activatable_update (GtkActivatable *activatable, GtkAction *action, const gchar *property_name); static void foo_bar_activatable_sync_action_properties (GtkActivatable *activatable, GtkAction *action); ...
static void foo_bar_class_init (FooBarClass *klass) {
...
g_object_class_override_property (gobject_class, PROP_ACTIVATABLE_RELATED_ACTION, "related-action"); g_object_class_override_property (gobject_class, PROP_ACTIVATABLE_USE_ACTION_APPEARANCE, "use-action-appearance");
... }
static void foo_bar_activatable_interface_init (GtkActivatableIface *iface) { iface->update = foo_bar_activatable_update; iface->sync_action_properties = foo_bar_activatable_sync_action_properties; }
... Break the reference using gtk_activatable_do_set_related_action()...
static void foo_bar_dispose (GObject *object) { FooBar *bar = FOO_BAR (object); FooBarPrivate *priv = FOO_BAR_GET_PRIVATE (bar);
...
if (priv->action) { gtk_activatable_do_set_related_action (GTK_ACTIVATABLE (bar), NULL); priv->action = NULL; } G_OBJECT_CLASS (foo_bar_parent_class)->dispose (object); }
... Handle the "related-action" and "use-action-appearance" properties ...
static void foo_bar_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { FooBar *bar = FOO_BAR (object); FooBarPrivate *priv = FOO_BAR_GET_PRIVATE (bar);
switch (prop_id) {
...
case PROP_ACTIVATABLE_RELATED_ACTION: foo_bar_set_related_action (bar, g_value_get_object (value)); break; case PROP_ACTIVATABLE_USE_ACTION_APPEARANCE: foo_bar_set_use_action_appearance (bar, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } }
static void foo_bar_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { FooBar *bar = FOO_BAR (object); FooBarPrivate *priv = FOO_BAR_GET_PRIVATE (bar);
switch (prop_id) {
...
case PROP_ACTIVATABLE_RELATED_ACTION: g_value_set_object (value, priv->action); break; case PROP_ACTIVATABLE_USE_ACTION_APPEARANCE: g_value_set_boolean (value, priv->use_action_appearance); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } }
static void foo_bar_set_use_action_appearance (FooBar *bar, gboolean use_appearance) { FooBarPrivate *priv = FOO_BAR_GET_PRIVATE (bar);
if (priv->use_action_appearance != use_appearance) { priv->use_action_appearance = use_appearance; gtk_activatable_sync_action_properties (GTK_ACTIVATABLE (bar), priv->action); } }
... call gtk_activatable_do_set_related_action() and then assign the action pointer, no need to reference the action here since gtk_activatable_do_set_related_action() already holds a reference here for you... static void foo_bar_set_related_action (FooBar *bar, GtkAction *action) { FooBarPrivate *priv = FOO_BAR_GET_PRIVATE (bar);
if (priv->action == action) return;
gtk_activatable_do_set_related_action (GTK_ACTIVATABLE (bar), action);
priv->action = action; }
... Selectively reset and update activatable depending on the use-action-appearance property ... static void gtk_button_activatable_sync_action_properties (GtkActivatable *activatable, GtkAction *action) { GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (activatable);
if (!action) return;
if (gtk_action_is_visible (action)) gtk_widget_show (GTK_WIDGET (activatable)); else gtk_widget_hide (GTK_WIDGET (activatable)); gtk_widget_set_sensitive (GTK_WIDGET (activatable), gtk_action_is_sensitive (action));
... if (priv->use_action_appearance) { if (gtk_action_get_stock_id (action)) foo_bar_set_stock (button, gtk_action_get_stock_id (action)); else if (gtk_action_get_label (action)) foo_bar_set_label (button, gtk_action_get_label (action));
...
} }
static void foo_bar_activatable_update (GtkActivatable *activatable, GtkAction *action, const gchar *property_name) { FooBarPrivate *priv = FOO_BAR_GET_PRIVATE (activatable);
if (strcmp (property_name, "visible") == 0) { if (gtk_action_is_visible (action)) gtk_widget_show (GTK_WIDGET (activatable)); else gtk_widget_hide (GTK_WIDGET (activatable)); } else if (strcmp (property_name, "sensitive") == 0) gtk_widget_set_sensitive (GTK_WIDGET (activatable), gtk_action_is_sensitive (action));
...
if (!priv->use_action_appearance) return;
if (strcmp (property_name, "stock-id") == 0) foo_bar_set_stock (button, gtk_action_get_stock_id (action)); else if (strcmp (property_name, "label") == 0) foo_bar_set_label (button, gtk_action_get_label (action));
... }