[gtk/drop-down-selected-item] dropdown: Add GtkDropDown:selected-item

[Matthias Clasen <matthiasc src gnome org>]

commit ad98e728845244e5275bcdf13eb8580140fc86a3
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 20 13:11:48 2020 -0400

    dropdown: Add GtkDropDown:selected-item
    
    This is the same readonly property we have in
    GtkSingleSelection.
    
    Fixes: #2861

 docs/reference/gtk/gtk4-sections.txt |  1 +
 gtk/gtkdropdown.c                    | 37 ++++++++++++++++++++++++++++++++++++
 gtk/gtkdropdown.h                    |  3 +++
 3 files changed, 41 insertions(+)
---
diff --git a/docs/reference/gtk/gtk4-sections.txt b/docs/reference/gtk/gtk4-sections.txt
index c61cd3452c..59df2f46e8 100644
--- a/docs/reference/gtk/gtk4-sections.txt
+++ b/docs/reference/gtk/gtk4-sections.txt
@@ -7540,6 +7540,7 @@ gtk_drop_down_set_model
 gtk_drop_down_get_model
 gtk_drop_down_set_selected
 gtk_drop_down_get_selected
+gtk_drop_down_get_selected_item
 gtk_drop_down_set_factory
 gtk_drop_down_get_factory
 gtk_drop_down_set_list_factory
diff --git a/gtk/gtkdropdown.c b/gtk/gtkdropdown.c
index c0a37f4089..a95775eab6 100644
--- a/gtk/gtkdropdown.c
+++ b/gtk/gtkdropdown.c
@@ -131,6 +131,7 @@ enum
   PROP_LIST_FACTORY,
   PROP_MODEL,
   PROP_SELECTED,
+  PROP_SELECTED_ITEM,
   PROP_ENABLE_SEARCH,
   PROP_EXPRESSION,
 
@@ -314,6 +315,10 @@ gtk_drop_down_get_property (GObject    *object,
       g_value_set_uint (value, gtk_drop_down_get_selected (self));
       break;
 
+    case PROP_SELECTED_ITEM:
+      g_value_set_object (value, gtk_drop_down_get_selected_item (self));
+      break;
+
     case PROP_ENABLE_SEARCH:
       g_value_set_boolean (value, self->enable_search);
       break;
@@ -488,6 +493,18 @@ gtk_drop_down_class_init (GtkDropDownClass *klass)
                          0, G_MAXUINT, GTK_INVALID_LIST_POSITION,
                          G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
 
+  /**
+   * GtkDropDown:selected-item:
+   *
+   * The selected item.
+   */
+  properties[PROP_SELECTED_ITEM] =
+    g_param_spec_object ("selected-item",
+                       P_("Selected Item"),
+                       P_("The selected item"),
+                       G_TYPE_OBJECT,
+                       G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+
   /**
    * GtkDropDown:enable-search:
    *
@@ -794,6 +811,7 @@ gtk_drop_down_set_selected (GtkDropDown *self,
   gtk_single_selection_set_selected (GTK_SINGLE_SELECTION (self->selection), position);
 
   g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SELECTED]);
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SELECTED_ITEM]);
 }
 
 /**
@@ -816,6 +834,25 @@ gtk_drop_down_get_selected (GtkDropDown *self)
   return gtk_single_selection_get_selected (GTK_SINGLE_SELECTION (self->selection));
 }
 
+/**
+ * gtk_drop_down_get_selected_item:
+ * @self: a #GtkDropDown
+ *
+ * Gets the selected item. If no item is selected, %NULL is returned.
+ *
+ * Returns: (transfer none): The selected item
+ */
+gpointer
+gtk_drop_down_get_selected_item (GtkDropDown *self)
+{
+  g_return_val_if_fail (GTK_IS_DROP_DOWN (self), NULL);
+
+  if (self->selection == NULL)
+    return NULL;
+
+  return gtk_single_selection_get_selected_item (GTK_SINGLE_SELECTION (self->selection));
+}
+
 /**
  * gtk_drop_down_set_enable_search:
  * @self: a #GtkDropDown
diff --git a/gtk/gtkdropdown.h b/gtk/gtkdropdown.h
index 84813b3877..0795d0f77b 100644
--- a/gtk/gtkdropdown.h
+++ b/gtk/gtkdropdown.h
@@ -49,6 +49,9 @@ void            gtk_drop_down_set_selected                      (GtkDropDown
 GDK_AVAILABLE_IN_ALL
 guint           gtk_drop_down_get_selected                      (GtkDropDown            *self);
 
+GDK_AVAILABLE_IN_ALL
+gpointer        gtk_drop_down_get_selected_item                 (GtkDropDown            *self);
+
 GDK_AVAILABLE_IN_ALL
 void            gtk_drop_down_set_factory                       (GtkDropDown            *self,
                                                                  GtkListItemFactory     *factory);