/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
 * mx-combo-box.c: combo box
 *
 * Copyright 2009 Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU Lesser General Public License,
 * version 2.1, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Written by: Thomas Wood <thomas.wood@intel.com>
 *
 */

/**
 * SECTION:mx-combo-box
 * @short_description: combo box actor
 *
 * #MxComboBox combines a button with a popup menu to allow the user to select
 * an option from a list.
 */

#include "mx-combo-box.h"
#include "mx-menu.h"

#include "mx-private.h"
#include "mx-stylable.h"

static void mx_focusable_iface_init (MxFocusableIface *iface);
static void mx_stylable_iface_init (MxStylableIface *iface);

G_DEFINE_TYPE_WITH_CODE (MxComboBox, mx_combo_box, MX_TYPE_WIDGET,
                         G_IMPLEMENT_INTERFACE (MX_TYPE_FOCUSABLE,
                                                mx_focusable_iface_init)
                         G_IMPLEMENT_INTERFACE (MX_TYPE_STYLABLE,
                                                mx_stylable_iface_init))

#define COMBO_BOX_PRIVATE(o) \
  (G_TYPE_INSTANCE_GET_PRIVATE ((o), MX_TYPE_COMBO_BOX, MxComboBoxPrivate))

struct _MxComboBoxPrivate
{
  ClutterActor *label;
  ClutterActor *icon;
  ClutterActor *marker;
  GSList       *actions;
  gfloat        clip_x;
  gfloat        clip_y;
  gint          index;
  gint          spacing;
};

enum
{
  PROP_0,

  PROP_ACTIVE_TEXT,
  PROP_ACTIVE_ICON_NAME,
  PROP_INDEX
};

static void
mx_stylable_iface_init (MxStylableIface *iface)
{
  static gboolean is_initialised = FALSE;

  if (!is_initialised)
    {
      GParamSpec *pspec;

      is_initialised = TRUE;

      pspec = g_param_spec_boxed ("x-mx-marker-image",
                                  "Marker image",
                                  "Marker image used to denote that a "
                                  "combo-box expands on click.",
                                  MX_TYPE_BORDER_IMAGE,
                                  G_PARAM_READWRITE);
      mx_stylable_iface_install_property (iface, MX_TYPE_COMBO_BOX, pspec);

      pspec = g_param_spec_int ("x-mx-spacing",
                                "Spacing",
                                "Spacing to use between elements inside the "
                                "combo-box.",
                                0, G_MAXINT, 8,
                                G_PARAM_READWRITE);
      mx_stylable_iface_install_property (iface, MX_TYPE_COMBO_BOX, pspec);
    }
}

static void
mx_combo_box_get_property (GObject    *object,
                           guint       property_id,
                           GValue     *value,
                           GParamSpec *pspec)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (object)->priv;

  switch (property_id)
    {
    case PROP_ACTIVE_TEXT:
      g_value_set_string (value,
                          clutter_text_get_text ((ClutterText*) priv->label));
      break;

    case PROP_ACTIVE_ICON_NAME:
      g_value_set_string (value,
                          mx_combo_box_get_active_icon_name (
                                                        MX_COMBO_BOX (object)));
      break;

    case PROP_INDEX:
      g_value_set_int (value, priv->index);
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
    }
}

static void
mx_combo_box_set_property (GObject      *object,
                           guint         property_id,
                           const GValue *value,
                           GParamSpec   *pspec)
{
  MxComboBox *combo = (MxComboBox*) object;

  switch (property_id)
    {
    case PROP_ACTIVE_TEXT:
      mx_combo_box_set_active_text (combo, g_value_get_string (value));
      break;

    case PROP_ACTIVE_ICON_NAME:
      mx_combo_box_set_active_icon_name (combo, g_value_get_string (value));
      break;

    case PROP_INDEX:
      mx_combo_box_set_index (combo, g_value_get_int (value));
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
    }
}

static void
mx_combo_box_dispose (GObject *object)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (object)->priv;

  if (priv->label)
    {
      clutter_actor_destroy (priv->label);
      priv->label = NULL;
    }

  if (priv->icon)
    {
      clutter_actor_destroy (priv->icon);
      priv->icon = NULL;
    }

  if (priv->marker)
    {
      clutter_actor_destroy (priv->marker);
      priv->marker = NULL;
    }

  G_OBJECT_CLASS (mx_combo_box_parent_class)->dispose (object);
}

static void
mx_combo_box_finalize (GObject *object)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (object)->priv;

  if (priv->actions)
    {
      g_slist_foreach (priv->actions, (GFunc) g_object_unref, NULL);
      g_slist_free (priv->actions);
    }

  G_OBJECT_CLASS (mx_combo_box_parent_class)->finalize (object);
}

static void
mx_combo_box_map (ClutterActor *actor)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (actor)->priv;

  CLUTTER_ACTOR_CLASS (mx_combo_box_parent_class)->map (actor);

  clutter_actor_map (priv->label);

  if (priv->icon)
    clutter_actor_map (priv->icon);

  if (priv->marker)
    clutter_actor_map (priv->marker);
}

static void
mx_combo_box_unmap (ClutterActor *actor)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (actor)->priv;

  CLUTTER_ACTOR_CLASS (mx_combo_box_parent_class)->unmap (actor);

  clutter_actor_unmap (priv->label);

  if (priv->icon)
    clutter_actor_unmap (priv->icon);

  if (priv->marker)
    clutter_actor_unmap (priv->marker);
}

static void
mx_combo_box_paint (ClutterActor *actor)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (actor)->priv;

  CLUTTER_ACTOR_CLASS (mx_combo_box_parent_class)->paint (actor);

  clutter_actor_paint (priv->label);

  if (priv->icon)
    clutter_actor_paint (priv->icon);

  if (priv->marker)
    clutter_actor_paint (priv->marker);
}

static void
mx_combo_box_get_preferred_width (ClutterActor *actor,
                                  gfloat        for_height,
                                  gfloat       *min_width_p,
                                  gfloat       *natural_height_p)
{
  gfloat height;
  gfloat min_w, nat_w;
  gfloat min_label_w, nat_label_w;

  gfloat min_icon_w = 0, nat_icon_w = 0;
  gfloat min_menu_w = 0, nat_menu_w = 0;
  gfloat min_marker_w = 0, nat_marker_w = 0;
  MxComboBoxPrivate *priv = MX_COMBO_BOX (actor)->priv;

  MxPadding padding;
  ClutterActor *menu;

  mx_widget_get_padding (MX_WIDGET (actor), &padding);

  height = for_height - padding.top - padding.bottom;

  menu = (ClutterActor *) mx_widget_get_menu (MX_WIDGET (actor));
  if (menu)
    {
      clutter_actor_get_preferred_width (menu, -1, &min_menu_w, &nat_menu_w);
    }

  clutter_actor_get_preferred_width (priv->label,
                                     height,
                                     &min_label_w,
                                     &nat_label_w);

  min_w = min_label_w;
  nat_w = nat_label_w;

  if (priv->icon)
    {
      clutter_actor_get_preferred_width (priv->icon,
                                         height,
                                         &min_icon_w,
                                         &nat_icon_w);

      min_w += min_icon_w + priv->spacing;
      nat_w += nat_icon_w + priv->spacing;
    }

  if (min_menu_w > min_w)
    min_w = min_menu_w;
  if (nat_menu_w > nat_w)
    nat_w = nat_menu_w;

  if (priv->marker)
    {
      clutter_actor_get_preferred_width (priv->marker,
                                         height,
                                         &min_marker_w,
                                         &nat_marker_w);

      min_w += min_marker_w + priv->spacing;
      nat_w += nat_marker_w + priv->spacing;
    }

  if (min_width_p)
    *min_width_p = padding.left + padding.right + min_w;

  if (natural_height_p)
    *natural_height_p = padding.left + padding.right + nat_w;
}

static void
mx_combo_box_get_preferred_height (ClutterActor *actor,
                                   gfloat        for_width,
                                   gfloat       *min_height_p,
                                   gfloat       *natural_height_p)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (actor)->priv;
  gfloat min_label_h, nat_label_h;
  gfloat min_icon_h = 0, nat_icon_h = 0;
  gfloat min_marker_h = 0, nat_marker_h = 0;
  gfloat min_h, nat_h;
  MxPadding padding;

  mx_widget_get_padding (MX_WIDGET (actor), &padding);

  clutter_actor_get_preferred_height (priv->label,
                                      -1,
                                      &min_label_h,
                                      &nat_label_h);

  if (priv->icon)
    {
      clutter_actor_get_preferred_height (priv->icon,
                                          -1,
                                          &min_icon_h,
                                          &nat_icon_h);
    }

  if (priv->marker)
    {
      clutter_actor_get_preferred_height (priv->marker,
                                          -1,
                                          &min_marker_h,
                                          &nat_marker_h);
    }

  min_h = MAX (MAX (min_icon_h, min_label_h), min_marker_h);
  nat_h = MAX (MAX (nat_icon_h, nat_label_h), nat_marker_h);

  if (min_height_p)
    *min_height_p = padding.top + padding.bottom + min_h;

  if (natural_height_p)
    *natural_height_p = padding.top + padding.bottom + nat_h;
}

static void
mx_combo_box_allocate (ClutterActor          *actor,
                       const ClutterActorBox *box,
                       ClutterAllocationFlags flags)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (actor)->priv;
  MxPadding padding;
  gfloat x, y, width, height;
  gfloat min_menu_h, nat_menu_h;
  gfloat label_h;
  gfloat nat_icon_h, icon_h, icon_w;
  gfloat nat_marker_h, marker_h, marker_w;
  ClutterActorBox childbox;
  ClutterActor *menu, *stage;

  CLUTTER_ACTOR_CLASS (mx_combo_box_parent_class)->allocate (actor, box,
                                                             flags);

  mx_widget_get_padding (MX_WIDGET (actor), &padding);

  x = padding.left;
  y = padding.top;
  width = box->x2 - box->x1 - padding.left - padding.right;
  height = box->y2 - box->y1 - padding.top - padding.bottom;

  icon_w = marker_w = 0;

  if (priv->icon)
    {
      /* Allocate the icon, if there is one, the space not used by the text */
      clutter_actor_get_preferred_height (priv->icon, -1, NULL, &nat_icon_h);

      if (height >= nat_icon_h)
        {
          icon_h = nat_icon_h;
          clutter_actor_get_preferred_width (priv->icon, -1, NULL, &icon_w);
        }
      else
        {
          icon_h = height;
          clutter_actor_get_preferred_width (priv->icon, icon_h, NULL, &icon_w);
        }

      childbox.x1 = (int)(x);
      childbox.y1 = (int)(y + (height - icon_h) / 2);
      childbox.x2 = (int)(x + icon_w);
      childbox.y2 = (int)(childbox.y1 + icon_h);

      clutter_actor_allocate (priv->icon, &childbox, flags);

      icon_w += priv->spacing;
    }

  if (priv->marker)
    {
      clutter_actor_get_preferred_height (priv->marker, -1,
                                          NULL, &nat_marker_h);

      if (height >= nat_marker_h)
        {
          marker_h = nat_marker_h;
          clutter_actor_get_preferred_width (priv->marker, -1, NULL, &marker_w);
        }
      else
        {
          marker_h = height;
          clutter_actor_get_preferred_width (priv->marker, marker_h,
                                             NULL, &marker_w);
        }

      childbox.x2 = (int)(x + width);
      childbox.x1 = (int)(childbox.x2 - marker_w);
      childbox.y1 = (int)(y + (height - marker_h) / 2);
      childbox.y2 = (int)(childbox.y1 + marker_h);

      clutter_actor_allocate (priv->marker, &childbox, flags);

      marker_w += priv->spacing;
    }

  clutter_actor_get_preferred_height (priv->label, -1, NULL, &label_h);

  childbox.x1 = (int)(x + icon_w);
  childbox.y1 = (int)(y + (height / 2 - label_h / 2));
  childbox.x2 = (int)(x + width - marker_w);
  childbox.y2 = (int)(childbox.y1 + label_h);
  clutter_actor_allocate (priv->label, &childbox, flags);

  menu = (ClutterActor*) mx_widget_get_menu (MX_WIDGET (actor));
  clutter_actor_get_preferred_height (menu, (box->x2 - box->x1), &min_menu_h,
                                      &nat_menu_h);

  childbox.x1 = 0;
  childbox.x2 = (box->x2 - box->x1);
  childbox.y1 = (box->y2 - box->y1);

  stage = clutter_actor_get_stage (actor);
  if (stage != NULL)
    {
      ClutterVertex point = { 0, };
      gfloat stage_w, stage_h, combo_h = box->y2 - box->y1;

      clutter_actor_get_size (stage, &stage_w, &stage_h);
      point.y = combo_h + nat_menu_h;
      clutter_actor_apply_transform_to_point (actor, &point, &point);

      /* If the menu would appear off the stage, flip it around. */
      if ((point.x < 0) || (point.x >= stage_w) ||
          (point.y < 0) || (point.y >= stage_h))
        {
          childbox.y1 = -nat_menu_h;
        }
    }

  childbox.y2 = childbox.y1 + nat_menu_h;
  clutter_actor_allocate (menu, &childbox, flags);
}

static void
mx_combo_box_action_activated_cb (ClutterActor *menu,
                                  MxAction     *action,
                                  MxComboBox   *box)
{
  gint index;

  index = GPOINTER_TO_INT (g_object_get_data ((GObject*) action, "index"));
  mx_combo_box_set_index (box, index);

  /* reset the combobox style */
  mx_stylable_set_style_pseudo_class (MX_STYLABLE (box), NULL);
}

static void
mx_combo_box_update_menu (MxComboBox *box)
{
  MxComboBoxPrivate *priv = box->priv;
  GSList *l;
  gint index;
  MxMenu *menu;

  menu = mx_widget_get_menu (MX_WIDGET (box));
  if (!menu)
    return;

  mx_menu_remove_all (menu);

  for (index = 0, l = priv->actions; l; l = g_slist_next (l), index++)
    {
      MxAction *action;

      action = (MxAction *)l->data;
      g_object_set_data ((GObject*) action, "index", GINT_TO_POINTER (index));

      mx_menu_add_action (menu, action);
    }

  /* queue a relayout so the combobox size can match the new menu */
  clutter_actor_queue_relayout ((ClutterActor*) box);
}

static gboolean
mx_combo_box_button_press_event (ClutterActor       *actor,
                                 ClutterButtonEvent *event)
{
  ClutterActor *menu;

  menu = (ClutterActor *) mx_widget_get_menu (MX_WIDGET (actor));
  if (!menu)
    return FALSE;

  clutter_actor_show (menu);

  return TRUE;
}

static gboolean
mx_combo_box_key_press_event (ClutterActor    *actor,
                              ClutterKeyEvent *event)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (actor)->priv;
  gint n_items;

  n_items = g_slist_length (priv->actions);

  switch (event->keyval)
    {
    case CLUTTER_KEY_Down:
      mx_combo_box_set_index (MX_COMBO_BOX (actor),
                              CLAMP (priv->index + 1, 0, n_items -1));
      return TRUE;

    case CLUTTER_KEY_Up:
      mx_combo_box_set_index (MX_COMBO_BOX (actor),
                              CLAMP (priv->index - 1, 0, n_items -1));
      return TRUE;

    default:
      return FALSE;
    }
}

static void
mx_combo_box_apply_style (MxWidget *widget,
                          MxStyle  *style)
{
  MxComboBoxPrivate *priv = MX_COMBO_BOX (widget)->priv;

  if (priv->icon != NULL)
    mx_stylable_set_style (MX_STYLABLE (priv->icon), style);
}

static void
mx_combo_box_style_changed (MxComboBox *combo, MxStyleChangedFlags flags)
{
  MxBorderImage *marker_filename;
  gint spacing;

  MxComboBoxPrivate *priv = combo->priv;

  mx_stylable_get (MX_STYLABLE (combo),
                   "x-mx-spacing", &spacing,
                   "x-mx-marker-image", &marker_filename,
                   NULL);

  if (spacing != priv->spacing)
    priv->spacing = spacing;

  if (priv->marker)
    {
      clutter_actor_destroy (priv->marker);
      priv->marker = NULL;
    }

  if (marker_filename)
    {
      MxTextureCache *cache = mx_texture_cache_get_default ();
      priv->marker = (ClutterActor *)
        mx_texture_cache_get_texture (cache, marker_filename->uri);
      if (priv->marker)
        clutter_actor_set_parent (priv->marker, CLUTTER_ACTOR (combo));

      g_boxed_free (MX_TYPE_BORDER_IMAGE, marker_filename);
    }

  mx_stylable_apply_clutter_text_attributes (MX_STYLABLE (combo),
                                             CLUTTER_TEXT (combo->priv->label));

  /* make sure the popup is also up-to-date */
  mx_stylable_style_changed (MX_STYLABLE (mx_widget_get_menu (MX_WIDGET (combo))),
                             flags | MX_STYLE_CHANGED_FORCE);

  clutter_actor_queue_relayout (CLUTTER_ACTOR (combo));
}

static void
mx_combo_box_class_init (MxComboBoxClass *klass)
{
  GParamSpec *pspec;
  GObjectClass *object_class = G_OBJECT_CLASS (klass);
  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
  MxWidgetClass *widget_class = MX_WIDGET_CLASS (klass);

  g_type_class_add_private (klass, sizeof (MxComboBoxPrivate));

  object_class->get_property = mx_combo_box_get_property;
  object_class->set_property = mx_combo_box_set_property;
  object_class->dispose = mx_combo_box_dispose;
  object_class->finalize = mx_combo_box_finalize;

  actor_class->map = mx_combo_box_map;
  actor_class->unmap = mx_combo_box_unmap;
  actor_class->paint = mx_combo_box_paint;

  actor_class->get_preferred_width = mx_combo_box_get_preferred_width;
  actor_class->get_preferred_height = mx_combo_box_get_preferred_height;
  actor_class->allocate = mx_combo_box_allocate;

  actor_class->button_press_event = mx_combo_box_button_press_event;
  actor_class->key_press_event = mx_combo_box_key_press_event;

  widget_class->apply_style = mx_combo_box_apply_style;

  pspec = g_param_spec_string ("active-text",
                               "Active Text",
                               "Text currently displayed in the combo box"
                               " button",
                               "",
                               MX_PARAM_READWRITE);
  g_object_class_install_property (object_class, PROP_ACTIVE_TEXT, pspec);

  pspec = g_param_spec_string ("active-icon-name",
                               "Active Icon-name",
                               "Name of the icon currently displayed in the "
                               "combo-box",
                               NULL,
                               MX_PARAM_READWRITE);
  g_object_class_install_property (object_class, PROP_ACTIVE_ICON_NAME, pspec);

  pspec = g_param_spec_int ("index",
                            "Index",
                            "Index of the selected item, or -1 if no item is"
                            " selected.",
                            -1, G_MAXINT, -1,
                            MX_PARAM_READWRITE);
  g_object_class_install_property (object_class, PROP_INDEX, pspec);
}

static void
mx_combo_box_init (MxComboBox *self)
{
  MxComboBoxPrivate *priv;
  ClutterActor *menu;

  priv = self->priv = COMBO_BOX_PRIVATE (self);

  priv->spacing = 8;

  priv->label = clutter_text_new ();
  clutter_actor_set_parent (priv->label, (ClutterActor*) self);

  menu = mx_menu_new ();
  mx_widget_set_menu (MX_WIDGET (self), MX_MENU (menu));

  g_signal_connect (menu, "action-activated",
                    G_CALLBACK (mx_combo_box_action_activated_cb),
                    self);

  g_signal_connect (self, "style-changed",
                    G_CALLBACK (mx_combo_box_style_changed), NULL);

  clutter_actor_set_reactive (CLUTTER_ACTOR (self), TRUE);
}

static MxFocusable *
mx_combo_box_accept_focus (MxFocusable *focusable, MxFocusHint hint)
{
  mx_stylable_set_style_pseudo_class (MX_STYLABLE (focusable), "focus");

  clutter_actor_grab_key_focus (CLUTTER_ACTOR (focusable));

  return focusable;
}

static MxFocusable *
mx_combo_box_move_focus (MxFocusable      *focusable,
                         MxFocusDirection  direction,
                         MxFocusable      *from)
{
  if (focusable == from)
    {
      mx_stylable_set_style_pseudo_class (MX_STYLABLE (focusable), "");
    }

  return NULL;
}

static void
mx_focusable_iface_init (MxFocusableIface *iface)
{
  iface->accept_focus   = mx_combo_box_accept_focus;
  iface->move_focus     = mx_combo_box_move_focus;
}

/**
 * mx_combo_box_new:
 *
 * Create a new MxComboBox
 *
 * Returns: a newly allocated MxComboBox
 */
ClutterActor *
mx_combo_box_new (void)
{
  return g_object_new (MX_TYPE_COMBO_BOX, NULL);
}

/**
 * mx_combo_box_insert_text:
 * @box: A #MxComboBox
 * @position: zero indexed position to insert the item at
 * @text: name of the item
 *
 * Insert an item into the combo box list.
 *
 */
void
mx_combo_box_insert_text (MxComboBox  *box,
                          gint         position,
                          const gchar *text)
{
  MxAction *action;

  g_return_if_fail (MX_IS_COMBO_BOX (box));

  action = mx_action_new ();
  mx_action_set_display_name (action, text);

  box->priv->actions = g_slist_insert (box->priv->actions,
                                       g_object_ref_sink (action),
                                       position);
  mx_combo_box_update_menu (box);
}

/**
 * mx_combo_box_insert_text_with_icon:
 * @box: A #MxComboBox
 * @position: zero indexed position to insert the item at
 * @text: name of the item
 * @icon: name of an icon from the icon theme
 *
 * Insert an item with text and an icon into the combo box list.
 *
 */
void
mx_combo_box_insert_text_with_icon (MxComboBox  *box,
                                    gint         position,
                                    const gchar *text,
                                    const gchar *icon)
{
  MxAction *action;

  g_return_if_fail (MX_IS_COMBO_BOX (box));

  action = mx_action_new ();
  mx_action_set_display_name (action, text);
  mx_action_set_icon (action, icon);

  box->priv->actions = g_slist_insert (box->priv->actions,
                                       g_object_ref_sink (action),
                                       position);
  mx_combo_box_update_menu (box);
}

/**
 * mx_combo_box_append_text:
 * @box: A #MxComboBox
 * @text: name of the item
 *
 * Append an item to the combo box list
 *
 */
void
mx_combo_box_append_text (MxComboBox  *box,
                          const gchar *text)
{
  g_return_if_fail (MX_IS_COMBO_BOX (box));

  /* -1 pushes it at the end of the list */
  mx_combo_box_insert_text (box, -1, text);
}


/**
 * mx_combo_box_prepend_text:
 * @box: A #MxComboBox
 * @text: name of the item
 *
 * Prepend an item to the combo box list
 *
 */
void
mx_combo_box_prepend_text (MxComboBox  *box,
                           const gchar *text)
{
  g_return_if_fail (MX_IS_COMBO_BOX (box));

  mx_combo_box_insert_text (box, 0, text);
}

/**
 * mx_combo_box_remove_text:
 * @box: A #MxComboBox
 * @position: position of the item to remove
 *
 * Remove the item at @position
 *
 */
void
mx_combo_box_remove_text (MxComboBox *box,
                          gint        position)
{
  GSList *item;

  g_return_if_fail (MX_IS_COMBO_BOX (box));
  g_return_if_fail (position >= 0);

  /* find the item, free the string and remove it from the list */
  item = g_slist_nth (box->priv->actions, position);

  if (!item)
    return;

  g_object_unref (G_OBJECT (item->data));
  box->priv->actions = g_slist_delete_link (box->priv->actions, item);
  mx_combo_box_update_menu (box);
}

/**
 * mx_combo_box_set_active_text:
 * @box: A #MxComboBox
 * @text: text to display
 *
 * Set the text displayed in the combo box
 *
 */

void
mx_combo_box_set_active_text (MxComboBox  *box,
                              const gchar *text)
{
  g_return_if_fail (MX_IS_COMBO_BOX (box));

  box->priv->index = -1;
  clutter_text_set_text ((ClutterText*) box->priv->label, text);

  g_object_notify (G_OBJECT (box), "index");
  g_object_notify (G_OBJECT (box), "active-text");
}


/**
 * mx_combo_box_get_active_text:
 * @box: A #MxComboBox
 *
 * Get the text displayed in the combo box
 *
 * Returns: the text string, owned by the combo box
 */

const gchar*
mx_combo_box_get_active_text (MxComboBox *box)
{
  g_return_val_if_fail (MX_IS_COMBO_BOX (box), NULL);

  return clutter_text_get_text ((ClutterText*) box->priv->label);
}

/**
 * mx_combo_box_set_active_icon_name:
 * @box: A #MxComboBox
 * @icon_name: (allow-none): Icon name to use for displayed icon
 *
 * Set the icon displayed in the combo box.
 *
 */
void
mx_combo_box_set_active_icon_name (MxComboBox  *box,
                                   const gchar *icon_name)
{
  MxComboBoxPrivate *priv;

  g_return_if_fail (MX_IS_COMBO_BOX (box));

  priv = box->priv;

  if (!priv->icon)
    {
      if (icon_name)
        {
          MxIconTheme *icon_theme;

          icon_theme = mx_icon_theme_get_default ();
          if (mx_icon_theme_has_icon (icon_theme, icon_name))
            {
              priv->icon = mx_icon_new ();
              mx_icon_set_icon_name (MX_ICON (priv->icon), icon_name);
              clutter_actor_set_parent (priv->icon, CLUTTER_ACTOR (box));
            }
        }
    }
  else
    {
      if (icon_name)
        mx_icon_set_icon_name (MX_ICON (priv->icon), icon_name);
      else
        {
          clutter_actor_destroy (priv->icon);
          priv->icon = NULL;

          clutter_actor_queue_relayout (CLUTTER_ACTOR (box));
        }
    }

  priv->index = -1;
  g_object_notify (G_OBJECT (box), "index");
  g_object_notify (G_OBJECT (box), "active-icon-name");
}

/**
 * mx_combo_box_get_active_icon_name:
 * @box: A #MxComboBox
 *
 * Get the name of the icon displayed in the combo box
 *
 * Returns: the text string of the name of the displayed icon, owned by
 *          the combo box, or %NULL if there is no active icon.
 */
const gchar *
mx_combo_box_get_active_icon_name (MxComboBox  *box)
{
  MxComboBoxPrivate *priv;

  g_return_val_if_fail (MX_IS_COMBO_BOX (box), NULL);

  priv = box->priv;
  if (priv->icon)
    return mx_icon_get_icon_name (MX_ICON (priv->icon));
  else
    return NULL;
}

/**
 * mx_combo_box_set_index:
 * @box: A #MxComboBox
 * @index: the index of the list item to set
 *
 * Set the current combo box text from the item at @index in the list.
 *
 */
void
mx_combo_box_set_index (MxComboBox *box,
                        gint        index)
{
  MxComboBoxPrivate *priv;
  GSList *item;
  MxAction *action;
  const gchar *icon_name;

  g_return_if_fail (MX_IS_COMBO_BOX (box));

  priv = box->priv;

  item = g_slist_nth (box->priv->actions, index);

  if (!item)
    {
      box->priv->index = -1;
      clutter_text_set_text ((ClutterText*) box->priv->label, NULL);
      return;
    }

  box->priv->index = index;
  action = (MxAction *)item->data;
  clutter_text_set_text ((ClutterText*) box->priv->label,
                         mx_action_get_display_name (action));

  if (priv->icon)
    {
      clutter_actor_unparent (priv->icon);
      priv->icon = NULL;
    }

  icon_name = mx_action_get_icon (item->data);
  if (icon_name)
    {
      MxIconTheme *icon_theme;

      icon_theme = mx_icon_theme_get_default ();
      if (mx_icon_theme_has_icon (icon_theme, icon_name))
        {
          priv->icon = mx_icon_new ();
          mx_icon_set_icon_name (MX_ICON (priv->icon), icon_name);
          clutter_actor_set_parent (priv->icon, CLUTTER_ACTOR (box));
        }
    }

  g_object_notify (G_OBJECT (box), "index");
  g_object_notify (G_OBJECT (box), "active-text");
  g_object_notify (G_OBJECT (box), "active-icon-name");
}

/**
 * mx_combo_box_get_index:
 * @box: A #MxComboBox
 *
 * Get the index of the last item selected
 *
 * Returns: gint
 */
gint
mx_combo_box_get_index (MxComboBox *box)
{
  g_return_val_if_fail (MX_IS_COMBO_BOX (box), 0);

  return box->priv->index;
}

