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-rw-r--r--src/Makefile.am6
-rw-r--r--src/idoactionhelper.c364
-rw-r--r--src/idoactionhelper.h44
3 files changed, 412 insertions, 2 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index d6012f1..a2a82da 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -18,7 +18,8 @@ sources_h = \
idoscalemenuitem.h \
idoswitchmenuitem.h \
idotimeline.h \
- libido.h
+ libido.h \
+ idoactionhelper.h
EXTRA_DIST = \
ido.list \
@@ -68,7 +69,8 @@ libido_0_1_la_SOURCES = \
idoscalemenuitem.c \
idoswitchmenuitem.c \
idotimeline.c \
- idomenuitemfactory.c
+ idomenuitemfactory.c \
+ idoactionhelper.c
libido3_0_1_la_SOURCES = $(libido_0_1_la_SOURCES)
diff --git a/src/idoactionhelper.c b/src/idoactionhelper.c
new file mode 100644
index 0000000..b68423a
--- /dev/null
+++ b/src/idoactionhelper.c
@@ -0,0 +1,364 @@
+/*
+* Copyright 2013 Canonical Ltd.
+*
+* This program is free software: you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 3, as published
+* by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranties of
+* MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+* PURPOSE. See the GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License along
+* with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+* Authors:
+* Lars Uebernickel <lars.uebernickel@canonical.com>
+*/
+
+#include "idoactionhelper.h"
+
+typedef GObjectClass IdoActionHelperClass;
+
+struct _IdoActionHelper
+{
+ GObject parent;
+
+ GtkWidget *widget;
+ GActionGroup *actions;
+ gchar *action_name;
+ GVariant *action_target;
+};
+
+G_DEFINE_TYPE (IdoActionHelper, ido_action_helper, G_TYPE_OBJECT)
+
+enum
+{
+ PROP_0,
+ PROP_WIDGET,
+ PROP_ACTION_GROUP,
+ PROP_ACTION_NAME,
+ PROP_ACTION_TARGET,
+ NUM_PROPERTIES
+};
+
+enum
+{
+ ACTION_STATE_CHANGED,
+ NUM_SIGNALS
+};
+
+static GParamSpec *properties[NUM_PROPERTIES];
+static guint signals[NUM_SIGNALS];
+
+static void
+ido_action_helper_action_added (GActionGroup *actions,
+ const gchar *action_name,
+ gpointer user_data)
+{
+ IdoActionHelper *helper = user_data;
+ gboolean enabled;
+ GVariant *state;
+
+ if (!g_str_equal (action_name, helper->action_name))
+ return;
+
+ if (g_action_group_query_action (actions, action_name,
+ &enabled, NULL, NULL, NULL, &state))
+ {
+ gtk_widget_set_sensitive (helper->widget, enabled);
+
+ if (state)
+ {
+ g_signal_emit (helper, signals[ACTION_STATE_CHANGED], 0, state);
+ g_variant_unref (state);
+ }
+ }
+ else
+ {
+ gtk_widget_set_sensitive (helper->widget, FALSE);
+ }
+}
+
+static void
+ido_action_helper_action_removed (GActionGroup *action_group,
+ gchar *action_name,
+ gpointer user_data)
+{
+ IdoActionHelper *helper = user_data;
+
+ if (g_str_equal (action_name, helper->action_name))
+ gtk_widget_set_sensitive (helper->widget, FALSE);
+}
+
+static void
+ido_action_helper_action_enabled_changed (GActionGroup *action_group,
+ gchar *action_name,
+ gboolean enabled,
+ gpointer user_data)
+{
+ IdoActionHelper *helper = user_data;
+
+ if (g_str_equal (action_name, helper->action_name))
+ gtk_widget_set_sensitive (helper->widget, enabled);
+}
+
+static void
+ido_action_helper_action_state_changed (GActionGroup *action_group,
+ gchar *action_name,
+ GVariant *value,
+ gpointer user_data)
+{
+ IdoActionHelper *helper = user_data;
+
+ if (g_str_equal (action_name, helper->action_name))
+ g_signal_emit (helper, signals[ACTION_STATE_CHANGED], 0, value);
+}
+
+static gboolean
+call_action_added (gpointer user_data)
+{
+ IdoActionHelper *helper = user_data;
+
+ ido_action_helper_action_added (helper->actions, helper->action_name, helper);
+
+ return G_SOURCE_REMOVE;
+}
+
+static void
+ido_action_helper_constructed (GObject *object)
+{
+ IdoActionHelper *helper = IDO_ACTION_HELPER (object);
+
+ g_signal_connect (helper->actions, "action-added",
+ G_CALLBACK (ido_action_helper_action_added), helper);
+ g_signal_connect (helper->actions, "action-removed",
+ G_CALLBACK (ido_action_helper_action_removed), helper);
+ g_signal_connect (helper->actions, "action-enabled-changed",
+ G_CALLBACK (ido_action_helper_action_enabled_changed), helper);
+ g_signal_connect (helper->actions, "action-state-changed",
+ G_CALLBACK (ido_action_helper_action_state_changed), helper);
+
+ if (g_action_group_has_action (helper->actions, helper->action_name))
+ {
+ /* call action_added in an idle, so that we don't fire the
+ * state-changed signal during construction (nobody could have
+ * connected by then).
+ */
+ g_idle_add (call_action_added, helper);
+ }
+
+ G_OBJECT_CLASS (ido_action_helper_parent_class)->constructed (object);
+}
+
+static void
+ido_action_helper_get_property (GObject *object,
+ guint id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ IdoActionHelper *helper = IDO_ACTION_HELPER (object);
+
+ switch (id)
+ {
+ case PROP_WIDGET:
+ g_value_set_object (value, helper->widget);
+ break;
+
+ case PROP_ACTION_GROUP:
+ g_value_set_object (value, helper->actions);
+ break;
+
+ case PROP_ACTION_NAME:
+ g_value_set_string (value, helper->action_name);
+ break;
+
+ case PROP_ACTION_TARGET:
+ g_value_set_variant (value, helper->action_target);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, id, pspec);
+ }
+}
+
+static void
+ido_action_helper_set_property (GObject *object,
+ guint id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ IdoActionHelper *helper = IDO_ACTION_HELPER (object);
+
+ switch (id)
+ {
+ case PROP_WIDGET: /* construct-only */
+ helper->widget = g_value_dup_object (value);
+ break;
+
+ case PROP_ACTION_GROUP: /* construct-only */
+ helper->actions = g_value_dup_object (value);
+ break;
+
+ case PROP_ACTION_NAME: /* construct-only */
+ helper->action_name = g_value_dup_string (value);
+ break;
+
+ case PROP_ACTION_TARGET: /* construct-only */
+ helper->action_target = g_value_dup_variant (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, id, pspec);
+ }
+}
+
+static void
+ido_action_helper_finalize (GObject *object)
+{
+ IdoActionHelper *helper = IDO_ACTION_HELPER (object);
+
+ g_object_unref (helper->widget);
+
+ g_signal_handlers_disconnect_by_data (helper->actions, helper);
+ g_object_unref (helper->actions);
+
+ g_free (helper->action_name);
+
+ if (helper->action_target)
+ g_variant_unref (helper->action_target);
+
+ G_OBJECT_CLASS (ido_action_helper_parent_class)->finalize (object);
+}
+
+static void
+ido_action_helper_class_init (IdoActionHelperClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+ object_class->constructed = ido_action_helper_constructed;
+ object_class->get_property = ido_action_helper_get_property;
+ object_class->set_property = ido_action_helper_set_property;
+ object_class->finalize = ido_action_helper_finalize;
+
+ signals[ACTION_STATE_CHANGED] = g_signal_new ("action-state-changed",
+ IDO_TYPE_ACTION_HELPER,
+ G_SIGNAL_RUN_FIRST,
+ 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VARIANT,
+ G_TYPE_NONE, 1, G_TYPE_VARIANT);
+
+ properties[PROP_WIDGET] = g_param_spec_object ("widget", "", "",
+ GTK_TYPE_WIDGET,
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_READWRITE |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_ACTION_GROUP] = g_param_spec_object ("action-group", "", "",
+ G_TYPE_ACTION_GROUP,
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_READWRITE |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_ACTION_NAME] = g_param_spec_string ("action-name", "", "", NULL,
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_READWRITE |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_ACTION_TARGET] = g_param_spec_variant ("action-target", "", "",
+ G_VARIANT_TYPE_ANY, NULL,
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_READWRITE |
+ G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
+}
+
+static void
+ido_action_helper_init (IdoActionHelper *helper)
+{
+}
+
+/**
+ * ido_action_helper_new:
+ * @widget: a #GtkWidget
+ * @action_group: a #GActionGroup
+ * @action_name: the name of an action in @action_group
+ * @target: the target of the action
+ *
+ * Creates a new #IdoActionHelper. This helper ties @widget to an action
+ * (and a target), and performs some common tasks:
+ *
+ * @widget will be set to insensitive whenever @action_group does not
+ * contain an action with the name @action_name, or the action with that
+ * name is disabled.
+ *
+ * Also, the helper emits the "action-state-changed" signal whenever the
+ * widget must be updated from the action's state. This includes once
+ * when the action was added, and every time the action changes its
+ * state.
+ *
+ * Returns: (transfer full): a new #IdoActionHelper
+ */
+IdoActionHelper *
+ido_action_helper_new (GtkWidget *widget,
+ GActionGroup *action_group,
+ const gchar *action_name,
+ GVariant *target)
+{
+ g_return_val_if_fail (widget != NULL, NULL);
+ g_return_val_if_fail (action_group != NULL, NULL);
+ g_return_val_if_fail (action_name != NULL, NULL);
+
+ return g_object_new (IDO_TYPE_ACTION_HELPER,
+ "widget", widget,
+ "action-group", action_group,
+ "action-name", action_name,
+ "action-target", target,
+ NULL);
+}
+
+/**
+ * ido_action_helper_get_widget:
+ * @helper: an #IdoActionHelper
+ *
+ * Returns: (transfer none): the #GtkWidget associated with @helper
+ */
+GtkWidget *
+ido_action_helper_get_widget (IdoActionHelper *helper)
+{
+ g_return_val_if_fail (IDO_IS_ACTION_HELPER (helper), NULL);
+
+ return helper->widget;
+}
+
+/**
+ * ido_action_helper_get_action_target:
+ * @helper: an #IdoActionHelper
+ *
+ * Returns: (transfer none): the action target that was set in
+ * ido_action_helper_new() as a #GVariant
+ */
+GVariant *
+ido_action_helper_get_action_target (IdoActionHelper *helper)
+{
+ g_return_val_if_fail (IDO_IS_ACTION_HELPER (helper), NULL);
+
+ return helper->action_target;
+}
+
+/**
+ * ido_action_helper_activate:
+ * @helper: an #IdoActionHelper
+ *
+ * Activates the action that is associated with this helper.
+ */
+void
+ido_action_helper_activate (IdoActionHelper *helper)
+{
+ g_return_if_fail (IDO_IS_ACTION_HELPER (helper));
+
+ if (helper->actions && helper->action_name)
+ g_action_group_activate_action (helper->actions, helper->action_name, helper->action_target);
+}
diff --git a/src/idoactionhelper.h b/src/idoactionhelper.h
new file mode 100644
index 0000000..22cdcae
--- /dev/null
+++ b/src/idoactionhelper.h
@@ -0,0 +1,44 @@
+/*
+* Copyright 2013 Canonical Ltd.
+*
+* This program is free software: you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 3, as published
+* by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranties of
+* MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+* PURPOSE. See the GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License along
+* with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+* Authors:
+* Lars Uebernickel <lars.uebernickel@canonical.com>
+*/
+
+#ifndef __IDO_ACTION_HELPER_H__
+#define __IDO_ACTION_HELPER_H__
+
+#include <gtk/gtk.h>
+
+#define IDO_TYPE_ACTION_HELPER (ido_action_helper_get_type ())
+#define IDO_ACTION_HELPER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), IDO_TYPE_ACTION_HELPER, IdoActionHelper))
+#define IDO_IS_ACTION_HELPER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), IDO_TYPE_ACTION_HELPER))
+
+typedef struct _IdoActionHelper IdoActionHelper;
+
+GType ido_menu_item_get_type (void);
+
+IdoActionHelper * ido_action_helper_new (GtkWidget *widget,
+ GActionGroup *action_group,
+ const gchar *action_name,
+ GVariant *target);
+
+GtkWidget * ido_action_helper_get_widget (IdoActionHelper *helper);
+
+GVariant * ido_action_helper_get_action_target (IdoActionHelper *helper);
+
+void ido_action_helper_activate (IdoActionHelper *helper);
+
+#endif
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