[gtk: 1/2] docs: Update list widgets docs

[Matthias Clasen <matthiasc src gnome org>]

commit e0134aaf15cb3d88f48d2655a53885a0770daf3d
Author: Andreas Persson <andreasp56 outlook com>
Date:   Sun Sep 6 17:19:24 2020 +0200

    docs: Update list widgets docs
    
    Removed sentence that claimed the view will wrap the model in a
    GtkSingleSelection, as it's no longer true. Fixed the code example in
    GtkListView for the same reason. Fixed a small typo in GtkDropDown docs.

 gtk/gtkcolumnview.c |  7 +++----
 gtk/gtkdropdown.c   |  2 +-
 gtk/gtkgridview.c   |  7 +++----
 gtk/gtklistview.c   | 11 +++++------
 4 files changed, 12 insertions(+), 15 deletions(-)
---
diff --git a/gtk/gtkcolumnview.c b/gtk/gtkcolumnview.c
index c3cb62839e..57d56fa080 100644
--- a/gtk/gtkcolumnview.c
+++ b/gtk/gtkcolumnview.c
@@ -58,10 +58,9 @@
  * separators between the rows or columns.
  *
  * GtkColumnView allows the user to select items according to the selection
- * characteristics of the model. If the provided model is not a #GtkSelectionModel,
- * GtkColumnView will wrap it in a #GtkSingleSelection. For models that allow
- * multiple selected items, it is possible to turn on *rubberband selection*,
- * using #GtkColumnView:enable-rubberband.
+ * characteristics of the model. For models that allow multiple selected items,
+ * it is possible to turn on *rubberband selection*, using
+ * #GtkColumnView:enable-rubberband.
  *
  * The column view supports sorting that can be customized by the user by
  * clicking on column headers. To set this up, the #GtkSorter returned by
diff --git a/gtk/gtkdropdown.c b/gtk/gtkdropdown.c
index feebfa1888..2cbd04e6a6 100644
--- a/gtk/gtkdropdown.c
+++ b/gtk/gtkdropdown.c
@@ -909,7 +909,7 @@ gtk_drop_down_get_enable_search (GtkDropDown *self)
  *
  * Sets the expression that gets evaluated to obtain strings from items
  * when searching in the popup. The expression must have a value type of
- * #GTK_TYPE_STRING.
+ * #G_TYPE_STRING.
  */
 void
 gtk_drop_down_set_expression (GtkDropDown   *self,
diff --git a/gtk/gtkgridview.c b/gtk/gtkgridview.c
index f20c34ba84..ba8ce422af 100644
--- a/gtk/gtkgridview.c
+++ b/gtk/gtkgridview.c
@@ -55,10 +55,9 @@
  * grid reflows vertically or horizontally.
  *
  * GtkGridView allows the user to select items according to the selection
- * characteristics of the model. If the provided model is not a #GtkSelectionModel,
- * GtkGridView will wrap it in a #GtkSingleSelection. For models that allow
- * multiple selected items, it is possible to turn on _rubberband selection_,
- * using #GtkGridView:enable-rubberband.
+ * characteristics of the model. For models that allow multiple selected items,
+ * it is possible to turn on _rubberband selection_, using
+ * #GtkGridView:enable-rubberband.
  *
  * To learn more about the list widget framework, see the [overview](#ListWidget).
  *
diff --git a/gtk/gtklistview.c b/gtk/gtklistview.c
index e7f2cf18bb..d04799b3a4 100644
--- a/gtk/gtklistview.c
+++ b/gtk/gtklistview.c
@@ -54,10 +54,9 @@
  * between the rows.
  *
  * GtkListView allows the user to select items according to the selection
- * characteristics of the model. If the provided model is not a #GtkSelectionModel,
- * GtkListView will wrap it in a #GtkSingleSelection. For models that allow
- * multiple selected items, it is possible to turn on _rubberband selection_,
- * using #GtkListView:enable-rubberband.
+ * characteristics of the model. For models that allow multiple selected items,
+ * it is possible to turn on _rubberband selection_, using
+ * #GtkListView:enable-rubberband.
  *
  * If you need multiple columns with headers, see #GtkColumnView.
  *
@@ -95,7 +94,7 @@
  * {
  *   GAppInfo *app_info;
  *
- *   app_info = g_list_model_get_item (gtk_list_view_get_model (list), position);
+ *   app_info = g_list_model_get_item (G_LIST_MODEL (gtk_list_view_get_model (list)), position);
  *   g_app_info_launch (app_info, NULL, NULL, NULL);
  *   g_object_unref (app_info);
  * }
@@ -108,7 +107,7 @@
  *   g_signal_connect (factory, "setup", G_CALLBACK (setup_listitem_cb), NULL);
  *   g_signal_connect (factory, "bind", G_CALLBACK (bind_listitem_cb), NULL);
  *
- *   list = gtk_list_view_new (model, factory);
+ *   list = gtk_list_view_new (GTK_SELECTION_MODEL (gtk_single_selection_new (model)), factory);
  *
  *   g_signal_connect (list, "activate", G_CALLBACK (activate_cb), NULL);
  *