Gtk.Activatable

g GObject.GInterface GObject.GInterface Gtk.Activatable Gtk.Activatable GObject.GInterface->Gtk.Activatable

Implementations:
 Gtk.Button, Gtk.MenuItem, Gtk.RecentChooserMenu, Gtk.Switch, Gtk.ToolItem

Virtual Methods

  do_sync_action_properties (action)
  do_update (action, property_name)

Properties

Name Type Flags Short Description
related-action Gtk.Action r/w The action this activatable will activate and receive updates from deprecated
use-action-appearance bool r/w Whether to use the related actions appearance properties deprecated

Signals

None

Fields

None

Class Details

class Gtk.Activatable
Bases:GObject.GInterface
Structure:Gtk.ActivatableIface

Activatable widgets can be connected to a Gtk.Action and reflects the state of its action. A Gtk.Activatable can also provide feedback through its action, as they are responsible for activating their related actions.

Implementing Gtk.Activatable

When extending a class that is already Gtk.Activatable; it is only necessary to implement the Gtk.Activatable->sync_action_properties() and Gtk.Activatable->update() methods and chain up to the parent implementation, however when introducing a new Gtk.Activatable class; the Gtk.Activatable :related-action and Gtk.Activatable :use-action-appearance properties need to be handled by the implementor. Handling these properties is mostly a matter of installing the action pointer and boolean flag on your instance, and calling Gtk.Activatable.do_set_related_action() and Gtk.Activatable.sync_action_properties() at the appropriate times.

A class fragment implementing Gtk.Activatable
enum {
...

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));

  ...
}
Parameters:action (Gtk.Action) – the Gtk.Action to set

This is a utility function for Gtk.Activatable implementors.

When implementing Gtk.Activatable you must call this when handling changes of the Gtk.Activatable :related-action, and you must also use this to break references in GObject.Object->dispose().

This function adds a reference to the currently set related action for you, it also makes sure the Gtk.Activatable->update() method is called when the related Gtk.Action properties change and registers to the action’s proxy list.

Be careful to call this before setting the local copy of the Gtk.Action property, since this function uses Gtk.Activatable.get_related_action() to retrieve the previous action.

New in version 2.16.

Deprecated since version 3.10.

Returns:the related Gtk.Action if one is set.
Return type:Gtk.Action

Gets the related Gtk.Action for self.

New in version 2.16.

Deprecated since version 3.10.

get_use_action_appearance()[source]
Returns:whether self uses its actions appearance.
Return type:bool

Gets whether this activatable should reset its layout and appearance when setting the related action or when the action changes appearance.

New in version 2.16.

Deprecated since version 3.10.

Parameters:action (Gtk.Action) – the Gtk.Action to set

Sets the related action on the self object.

Gtk.Activatable implementors need to handle the Gtk.Activatable :related-action property and call Gtk.Activatable.do_set_related_action() when it changes.

New in version 2.16.

Deprecated since version 3.10.

set_use_action_appearance(use_appearance)[source]
Parameters:use_appearance (bool) – whether to use the actions appearance

Sets whether this activatable should reset its layout and appearance when setting the related action or when the action changes appearance

Gtk.Activatable implementors need to handle the Gtk.Activatable :use-action-appearance property and call Gtk.Activatable.sync_action_properties() to update self if needed.

New in version 2.16.

Deprecated since version 3.10.

sync_action_properties(action)[source]
Parameters:action (Gtk.Action or None) – the related Gtk.Action or None

This is called to update the activatable completely, this is called internally when the Gtk.Activatable :related-action property is set or unset and by the implementing class when Gtk.Activatable :use-action-appearance changes.

New in version 2.16.

Deprecated since version 3.10.

do_sync_action_properties(action) virtual
Parameters:action (Gtk.Action or None) – the related Gtk.Action or None

This is called to update the activatable completely, this is called internally when the Gtk.Activatable :related-action property is set or unset and by the implementing class when Gtk.Activatable :use-action-appearance changes.

New in version 2.16.

Deprecated since version 3.10.

do_update(action, property_name) virtual
Parameters:

Property Details

Gtk.Activatable.props.related_action
Name:related-action
Type:Gtk.Action
Default Value:None
Flags:READABLE, WRITABLE

The action that this activatable will activate and receive updates from for various states and possibly appearance.

Gtk.Activatable implementors need to handle the this property and call Gtk.Activatable.do_set_related_action() when it changes.

New in version 2.16.

Deprecated since version 3.10.

Gtk.Activatable.props.use_action_appearance
Name:use-action-appearance
Type:bool
Default Value:True
Flags:READABLE, WRITABLE

Whether this activatable should reset its layout and appearance when setting the related action or when the action changes appearance.

See the Gtk.Action documentation directly to find which properties should be ignored by the Gtk.Activatable when this property is False.

Gtk.Activatable implementors need to handle this property and call Gtk.Activatable.sync_action_properties() on the activatable widget when it changes.

New in version 2.16.

Deprecated since version 3.10.