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-rw-r--r--src/ido-menu-item.c378
1 files changed, 378 insertions, 0 deletions
diff --git a/src/ido-menu-item.c b/src/ido-menu-item.c
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+/*
+ * Copyright 2012 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 "ido-menu-item.h"
+
+struct _IdoMenuItemPrivate
+{
+ GActionGroup *action_group;
+ gchar *action;
+ GVariant *target;
+
+ GtkWidget *icon;
+ GtkWidget *label;
+
+ gboolean has_indicator;
+ gboolean in_set_active;
+};
+
+enum
+{
+ PROP_0,
+ PROP_MENU_ITEM,
+ PROP_ACTION_GROUP,
+ NUM_PROPERTIES
+};
+
+static GParamSpec *properties[NUM_PROPERTIES];
+
+G_DEFINE_TYPE (IdoMenuItem, ido_menu_item, GTK_TYPE_CHECK_MENU_ITEM);
+
+static void
+ido_menu_item_constructed (GObject *object)
+{
+ IdoMenuItemPrivate *priv = IDO_MENU_ITEM (object)->priv;
+ GtkWidget *grid;
+
+ priv->icon = g_object_ref (gtk_image_new ());
+
+ priv->label = g_object_ref (gtk_label_new (""));
+
+ grid = gtk_grid_new ();
+ gtk_grid_attach (GTK_GRID (grid), priv->icon, 0, 0, 1, 1);
+ gtk_grid_attach (GTK_GRID (grid), priv->label, 1, 0, 1, 1);
+
+ gtk_container_add (GTK_CONTAINER (object), grid);
+ gtk_widget_show_all (grid);
+
+ G_OBJECT_CLASS (ido_menu_item_parent_class)->constructed (object);
+}
+
+static void
+ido_menu_item_set_active (IdoMenuItem *self,
+ gboolean active)
+{
+ /* HACK gtk_check_menu_item_set_active calls gtk_menu_item_activate.
+ * Make sure our activate handler doesn't toggle the action as a
+ * result of calling this function. */
+
+ self->priv->in_set_active = TRUE;
+ gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (self), active);
+ self->priv->in_set_active = FALSE;
+}
+
+static void
+ido_menu_item_set_has_indicator (IdoMenuItem *self,
+ gboolean has_indicator)
+{
+ if (has_indicator == self->priv->has_indicator)
+ return;
+
+ self->priv->has_indicator = has_indicator;
+
+ gtk_widget_queue_resize (GTK_WIDGET (self));
+}
+
+static void
+ido_menu_item_set_state (IdoMenuItem *self,
+ GVariant *state)
+{
+ IdoMenuItemPrivate *priv = self->priv;
+
+ if (priv->target)
+ {
+ ido_menu_item_set_has_indicator (self, TRUE);
+ gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (self), TRUE);
+ ido_menu_item_set_active (self, g_variant_equal (priv->target, state));
+ }
+ else if (g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
+ {
+ ido_menu_item_set_has_indicator (self, TRUE);
+ gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (self), FALSE);
+ ido_menu_item_set_active (self, g_variant_get_boolean (state));
+ }
+ else
+ {
+ ido_menu_item_set_has_indicator (self, FALSE);
+ }
+}
+
+static void
+ido_menu_item_set_action_name (IdoMenuItem *self,
+ const gchar *action_name)
+{
+ IdoMenuItemPrivate *priv = self->priv;
+ gboolean enabled = FALSE;
+ GVariant *state;
+ const GVariantType *param_type;
+
+ if (priv->action != NULL)
+ g_free (priv->action);
+
+ priv->action = g_strdup (action_name);
+
+ if (priv->action_group != NULL && priv->action != NULL &&
+ g_action_group_query_action (priv->action_group, priv->action,
+ &enabled, &param_type, NULL, NULL, &state))
+ {
+ gtk_widget_set_sensitive (GTK_WIDGET (self), enabled);
+ ido_menu_item_set_state (self, state);
+
+ if (state)
+ g_variant_unref (state);
+ }
+ else
+ {
+ ido_menu_item_set_active (self, FALSE);
+ gtk_widget_set_sensitive (GTK_WIDGET (self), FALSE);
+ ido_menu_item_set_has_indicator (self, FALSE);
+ }
+}
+
+static void
+ido_menu_item_action_added (GActionGroup *action_group,
+ gchar *action_name,
+ gpointer user_data)
+{
+ IdoMenuItem *self = user_data;
+
+ if (g_strcmp0 (self->priv->action, action_name) == 0)
+ ido_menu_item_set_action_name (self, action_name);
+}
+
+static void
+ido_menu_item_action_removed (GActionGroup *action_group,
+ gchar *action_name,
+ gpointer user_data)
+{
+ IdoMenuItem *self = user_data;
+
+ if (g_strcmp0 (self->priv->action, action_name) == 0)
+ {
+ gtk_widget_set_sensitive (GTK_WIDGET (self), FALSE);
+ }
+}
+
+static void
+ido_menu_item_action_enabled_changed (GActionGroup *action_group,
+ gchar *action_name,
+ gboolean enabled,
+ gpointer user_data)
+{
+ IdoMenuItem *self = user_data;
+
+ if (g_strcmp0 (self->priv->action, action_name) == 0)
+ gtk_widget_set_sensitive (GTK_WIDGET (self), enabled);
+}
+
+static void
+ido_menu_item_action_state_changed (GActionGroup *action_group,
+ gchar *action_name,
+ GVariant *value,
+ gpointer user_data)
+{
+ IdoMenuItem *self = user_data;
+
+ if (g_strcmp0 (self->priv->action, action_name) == 0)
+ ido_menu_item_set_state (self, value);
+}
+
+static void
+ido_menu_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ IdoMenuItem *self = IDO_MENU_ITEM (object);
+
+ switch (property_id)
+ {
+ case PROP_MENU_ITEM:
+ ido_menu_item_set_menu_item (self, G_MENU_ITEM (g_value_get_object (value)));
+ break;
+
+ case PROP_ACTION_GROUP:
+ ido_menu_item_set_action_group (self, G_ACTION_GROUP (g_value_get_object (value)));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ }
+}
+
+static void
+ido_menu_item_dispose (GObject *object)
+{
+ IdoMenuItem *self = IDO_MENU_ITEM (object);
+
+ if (self->priv->action_group)
+ ido_menu_item_set_action_group (self, NULL);
+
+ g_clear_object (&self->priv->icon);
+ g_clear_object (&self->priv->label);
+
+ if (self->priv->target)
+ g_variant_unref (self->priv->target);
+
+ G_OBJECT_CLASS (ido_menu_item_parent_class)->dispose (object);
+}
+
+static void
+ido_menu_item_finalize (GObject *object)
+{
+ IdoMenuItemPrivate *priv = IDO_MENU_ITEM (object)->priv;
+
+ g_free (priv->action);
+
+ G_OBJECT_CLASS (ido_menu_item_parent_class)->finalize (object);
+}
+
+static void
+ido_menu_item_activate (GtkMenuItem *item)
+{
+ IdoMenuItemPrivate *priv = IDO_MENU_ITEM (item)->priv;
+
+ /* see ido_menu_item_set_active */
+ if (!priv->in_set_active && priv->action && priv->action_group)
+ g_action_group_activate_action (priv->action_group, priv->action, priv->target);
+
+ GTK_MENU_ITEM_CLASS (ido_menu_item_parent_class)->activate (item);
+}
+
+static void
+ido_menu_item_draw_indicator (GtkCheckMenuItem *item,
+ cairo_t *cr)
+{
+ IdoMenuItem *self = IDO_MENU_ITEM (item);
+
+ if (self->priv->has_indicator)
+ GTK_CHECK_MENU_ITEM_CLASS (ido_menu_item_parent_class)
+ ->draw_indicator (item, cr);
+}
+
+static void
+ido_menu_item_class_init (IdoMenuItemClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkMenuItemClass *menu_item_class = GTK_MENU_ITEM_CLASS (klass);
+ GtkCheckMenuItemClass *check_class = GTK_CHECK_MENU_ITEM_CLASS (klass);
+
+ g_type_class_add_private (klass, sizeof (IdoMenuItemPrivate));
+
+ object_class->constructed = ido_menu_item_constructed;
+ object_class->set_property = ido_menu_set_property;
+ object_class->dispose = ido_menu_item_dispose;
+ object_class->finalize = ido_menu_item_finalize;
+
+ menu_item_class->activate = ido_menu_item_activate;
+
+ check_class->draw_indicator = ido_menu_item_draw_indicator;
+
+ properties[PROP_MENU_ITEM] = g_param_spec_object ("menu-item",
+ "Menu item",
+ "The model GMenuItem for this menu item",
+ G_TYPE_MENU_ITEM,
+ G_PARAM_WRITABLE |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_ACTION_GROUP] = g_param_spec_object ("action-group",
+ "Action group",
+ "The action group associated with this menu item",
+ G_TYPE_ACTION_GROUP,
+ G_PARAM_WRITABLE |
+ G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
+}
+
+static void
+ido_menu_item_init (IdoMenuItem *self)
+{
+ self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
+ IDO_TYPE_MENU_ITEM,
+ IdoMenuItemPrivate);
+}
+
+void
+ido_menu_item_set_menu_item (IdoMenuItem *self,
+ GMenuItem *menuitem)
+{
+ gchar *iconstr = NULL;
+ GIcon *icon = NULL;
+ gchar *label;
+ gchar *action = NULL;
+
+ if (g_menu_item_get_attribute (menuitem, "x-canonical-icon", "s", &iconstr))
+ {
+ GError *error;
+
+ icon = g_icon_new_for_string (iconstr, &error);
+ if (icon == NULL)
+ {
+ g_warning ("unable to set icon: %s", error->message);
+ g_error_free (error);
+ }
+ g_free (iconstr);
+ }
+ gtk_image_set_from_gicon (GTK_IMAGE (self->priv->icon), icon, GTK_ICON_SIZE_MENU);
+
+ g_menu_item_get_attribute (menuitem, "label", "s", &label);
+ gtk_label_set_label (GTK_LABEL (self->priv->label), label ? label : "");
+
+ self->priv->target = g_menu_item_get_attribute_value (menuitem, "target", NULL);
+
+ g_menu_item_get_attribute (menuitem, "action", "s", &action);
+ ido_menu_item_set_action_name (self, action);
+
+ if (icon)
+ g_object_unref (icon);
+ g_free (label);
+ g_free (action);
+}
+
+void
+ido_menu_item_set_action_group (IdoMenuItem *self,
+ GActionGroup *action_group)
+{
+ IdoMenuItemPrivate *priv = self->priv;
+
+ if (priv->action_group != NULL)
+ {
+ g_signal_handlers_disconnect_by_func (priv->action_group, ido_menu_item_action_added, self);
+ g_signal_handlers_disconnect_by_func (priv->action_group, ido_menu_item_action_removed, self);
+ g_signal_handlers_disconnect_by_func (priv->action_group, ido_menu_item_action_enabled_changed, self);
+ g_signal_handlers_disconnect_by_func (priv->action_group, ido_menu_item_action_state_changed, self);
+
+ g_clear_object (&priv->action_group);
+ }
+
+ if (action_group != NULL)
+ {
+ priv->action_group = g_object_ref (action_group);
+
+ g_signal_connect (priv->action_group, "action-added",
+ G_CALLBACK (ido_menu_item_action_added), self);
+ g_signal_connect (priv->action_group, "action-removed",
+ G_CALLBACK (ido_menu_item_action_removed), self);
+ g_signal_connect (priv->action_group, "action-enabled-changed",
+ G_CALLBACK (ido_menu_item_action_enabled_changed), self);
+ g_signal_connect (priv->action_group, "action-state-changed",
+ G_CALLBACK (ido_menu_item_action_state_changed), self);
+ }
+}