Add GtkColumnView skeleton

It's just a copy/paste of the listview code with all the internals
gutted. The code doesn't do anything.

7 files changed, 882 insertions, 0 deletions

diff --git a/docs/reference/gtk/gtk4-sections.txt b/docs/reference/gtk/gtk4-sections.txt
index 4344e85f30..47e0f7e8dc 100644
--- a/docs/reference/gtk/gtk4-sections.txt
+++ b/docs/reference/gtk/gtk4-sections.txt
@@ -537,6 +537,49 @@ gtk_list_view_get_type
 </SECTION>
 
 <SECTION>
+<FILE>gtkcolumnview</FILE>
+<TITLE>GtkColumnView</TITLE>
+GtkColumnView
+gtk_column_view_new
+gtk_column_view_get_columns
+gtk_column_view_get_model
+gtk_column_view_set_model
+gtk_column_view_get_show_separators
+gtk_column_view_set_show_separators
+<SUBSECTION Standard>
+GTK_COLUMN_VIEW
+GTK_COLUMN_VIEW_CLASS
+GTK_COLUMN_VIEW_GET_CLASS
+GTK_IS_COLUMN_VIEW
+GTK_IS_COLUMN_VIEW_CLASS
+GTK_TYPE_COLUMN_VIEW
+<SUBSECTION Private>
+gtk_column_view_get_type
+</SECTION>
+
+<SECTION>
+<FILE>gtkcolumnviewcolumn</FILE>
+<TITLE>GtkColumnViewColumn</TITLE>
+GtkColumnViewColumn
+gtk_column_view_column_new
+gtk_column_view_column_new_with_factory
+gtk_column_view_column_get_column_view
+gtk_column_view_column_set_factory
+gtk_column_view_column_get_factory
+gtk_column_view_column_set_title
+gtk_column_view_column_get_title
+<SUBSECTION Standard>
+GTK_COLUMN_VIEW_COLUMN
+GTK_COLUMN_VIEW_COLUMN_CLASS
+GTK_COLUMN_VIEW_COLUMN_GET_CLASS
+GTK_IS_COLUMN_VIEW_COLUMN
+GTK_IS_COLUMN_VIEW_COLUMN_CLASS
+GTK_TYPE_COLUMN_VIEW_COLUMN
+<SUBSECTION Private>
+gtk_column_view_column_get_type
+</SECTION>
+
+<SECTION>
 <FILE>gtkgridview</FILE>
 <TITLE>GtkGridView</TITLE>
 GtkGridView
diff --git a/gtk/gtk.h b/gtk/gtk.h
index 1ac3f3a767..9842ccbddd 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -82,6 +82,8 @@
 #include <gtk/gtkcolorchooserdialog.h>
 #include <gtk/gtkcolorchooserwidget.h>
 #include <gtk/gtkcolorutils.h>
+#include <gtk/gtkcolumnview.h>
+#include <gtk/gtkcolumnviewcolumn.h>
 #include <gtk/gtkcombobox.h>
 #include <gtk/gtkcomboboxtext.h>
 #include <gtk/gtkconstraintlayout.h>
diff --git a/gtk/gtkcolumnview.c b/gtk/gtkcolumnview.c
new file mode 100644
index 0000000000..934d8f7b52
--- /dev/null
+++ b/gtk/gtkcolumnview.c
@@ -0,0 +1,356 @@
+/*
+ * Copyright © 2019 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that 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 library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gtkcolumnview.h"
+
+#include "gtkcolumnviewcolumn.h"
+#include "gtkintl.h"
+#include "gtklistview.h"
+#include "gtkmain.h"
+#include "gtkprivate.h"
+#include "gtkwidgetprivate.h"
+
+/**
+ * SECTION:gtkcolumnview
+ * @title: GtkColumnView
+ * @short_description: A widget for displaying lists in multiple columns
+ * @see_also: #GtkColumnViewColumn, #GtkTreeView
+ *
+ * GtkColumnView is a widget to present a view into a large dynamic list of items
+ * using multiple columns.
+ */
+
+struct _GtkColumnView
+{
+  GtkWidget parent_instance;
+
+  GListStore *columns;
+
+  GtkListView *listview;
+};
+
+struct _GtkColumnViewClass
+{
+  GtkWidgetClass parent_class;
+};
+
+enum
+{
+  PROP_0,
+  PROP_COLUMNS,
+  PROP_MODEL,
+  PROP_SHOW_SEPARATORS,
+
+  N_PROPS
+};
+
+enum {
+  ACTIVATE,
+  LAST_SIGNAL
+};
+
+G_DEFINE_TYPE (GtkColumnView, gtk_column_view, GTK_TYPE_WIDGET)
+
+static GParamSpec *properties[N_PROPS] = { NULL, };
+static guint signals[LAST_SIGNAL] = { 0 };
+
+static void
+gtk_column_view_activate_cb (GtkListView   *listview,
+                             guint          pos,
+                             GtkColumnView *self)
+{
+  g_signal_emit (self, signals[ACTIVATE], 0, pos);
+}
+
+static void
+gtk_column_view_dispose (GObject *object)
+{
+  GtkColumnView *self = GTK_COLUMN_VIEW (object);
+
+  g_list_store_remove_all (self->columns);
+
+  g_clear_pointer ((GtkWidget **) &self->listview, gtk_widget_unparent);
+
+  G_OBJECT_CLASS (gtk_column_view_parent_class)->dispose (object);
+}
+
+static void
+gtk_column_view_finalize (GObject *object)
+{
+  GtkColumnView *self = GTK_COLUMN_VIEW (object);
+
+  g_object_unref (self->columns);
+
+  G_OBJECT_CLASS (gtk_column_view_parent_class)->finalize (object);
+}
+
+static void
+gtk_column_view_get_property (GObject    *object,
+                              guint       property_id,
+                              GValue     *value,
+                              GParamSpec *pspec)
+{
+  GtkColumnView *self = GTK_COLUMN_VIEW (object);
+
+  switch (property_id)
+    {
+    case PROP_COLUMNS:
+      g_value_set_object (value, self->columns);
+      break;
+
+    case PROP_MODEL:
+      g_value_set_object (value, gtk_list_view_get_model (self->listview));
+      break;
+
+    case PROP_SHOW_SEPARATORS:
+      g_value_set_boolean (value, gtk_list_view_get_show_separators (self->listview));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_column_view_set_property (GObject      *object,
+                              guint         property_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+{
+  GtkColumnView *self = GTK_COLUMN_VIEW (object);
+
+  switch (property_id)
+    {
+    case PROP_MODEL:
+      gtk_column_view_set_model (self, g_value_get_object (value));
+      break;
+
+    case PROP_SHOW_SEPARATORS:
+      gtk_column_view_set_show_separators (self, g_value_get_boolean (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_column_view_class_init (GtkColumnViewClass *klass)
+{
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->dispose = gtk_column_view_dispose;
+  gobject_class->finalize = gtk_column_view_finalize;
+  gobject_class->get_property = gtk_column_view_get_property;
+  gobject_class->set_property = gtk_column_view_set_property;
+
+  /**
+   * GtkColumnView:columns:
+   *
+   * The list of columns
+   */
+  properties[PROP_COLUMNS] =
+    g_param_spec_object ("columns",
+                         P_("Columns"),
+                         P_("List of columns"),
+                         G_TYPE_LIST_MODEL,
+                         G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  /**
+   * GtkColumnView:model:
+   *
+   * Model for the items displayed
+   */
+  properties[PROP_MODEL] =
+    g_param_spec_object ("model",
+                         P_("Model"),
+                         P_("Model for the items displayed"),
+                         G_TYPE_LIST_MODEL,
+                         G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  /**
+   * GtkColumnView:show-separators:
+   *
+   * Show separators between rows
+   */
+  properties[PROP_SHOW_SEPARATORS] =
+    g_param_spec_boolean ("show-separators",
+                          P_("Show separators"),
+                          P_("Show separators between rows"),
+                          FALSE,
+                          G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
+
+  g_object_class_install_properties (gobject_class, N_PROPS, properties);
+
+  /**
+   * GtkColumnView::activate:
+   * @self: The #GtkColumnView
+   * @position: position of item to activate
+   *
+   * The ::activate signal is emitted when a row has been activated by the user,
+   * usually via activating the GtkListBase|list.activate-item action.
+   *
+   * This allows for a convenient way to handle activation in a columnview.
+   * See gtk_list_item_set_activatable() for details on how to use this signal.
+   */
+  signals[ACTIVATE] =
+    g_signal_new (I_("activate"),
+                  G_TYPE_FROM_CLASS (gobject_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__UINT,
+                  G_TYPE_NONE, 1,
+                  G_TYPE_UINT);
+  g_signal_set_va_marshaller (signals[ACTIVATE],
+                              G_TYPE_FROM_CLASS (gobject_class),
+                              g_cclosure_marshal_VOID__UINTv);
+
+  gtk_widget_class_set_css_name (widget_class, I_("columnview"));
+}
+
+static void
+gtk_column_view_init (GtkColumnView *self)
+{
+  self->columns = g_list_store_new (GTK_TYPE_COLUMN_VIEW_COLUMN);
+
+  self->listview = GTK_LIST_VIEW (gtk_list_view_new ());
+  g_signal_connect (self->listview, "activate", G_CALLBACK (gtk_column_view_activate_cb), self);
+  gtk_widget_set_parent (GTK_WIDGET (self->listview), GTK_WIDGET (self));
+}
+
+/**
+ * gtk_column_view_new:
+ *
+ * Creates a new empty #GtkColumnView.
+ *
+ * You most likely want to call gtk_column_view_set_factory() to
+ * set up a way to map its items to widgets and gtk_column_view_set_model()
+ * to set a model to provide items next.
+ *
+ * Returns: a new #GtkColumnView
+ **/
+GtkWidget *
+gtk_column_view_new (void)
+{
+  return g_object_new (GTK_TYPE_COLUMN_VIEW, NULL);
+}
+
+/**
+ * gtk_column_view_get_model:
+ * @self: a #GtkColumnView
+ *
+ * Gets the model that's currently used to read the items displayed.
+ *
+ * Returns: (nullable) (transfer none): The model in use
+ **/
+GListModel *
+gtk_column_view_get_model (GtkColumnView *self)
+{
+  g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), NULL);
+
+  return gtk_list_view_get_model (self->listview);
+}
+
+/**
+ * gtk_column_view_set_model:
+ * @self: a #GtkColumnView
+ * @model: (allow-none) (transfer none): the model to use or %NULL for none
+ *
+ * Sets the #GListModel to use.
+ *
+ * If the @model is a #GtkSelectionModel, it is used for managing the selection.
+ * Otherwise, @self creates a #GtkSingleSelection for the selection.
+ **/
+void
+gtk_column_view_set_model (GtkColumnView *self,
+                           GListModel  *model)
+{
+  g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
+  g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));
+
+  if (gtk_list_view_get_model (self->listview) == model)
+    return;
+
+  gtk_list_view_set_model (self->listview, model);
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MODEL]);
+}
+
+/**
+ * gtk_column_view_get_columns:
+ * @self: a #GtkColumnView
+ *
+ * Gets the list of columns in this column view. This list is constant over
+ * the lifetime of @self and can be used to monitor changes to the columns
+ * of @self by connecting to the GListModel:items-changed signal.
+ *
+ * Returns: (transfer none): The list managing the columns
+ **/
+GListModel *
+gtk_column_view_get_columns (GtkColumnView *self)
+{
+  g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), NULL);
+
+  return G_LIST_MODEL (self->columns);
+}
+
+/**
+ * gtk_column_view_set_show_separators:
+ * @self: a #GtkColumnView
+ * @show_separators: %TRUE to show separators
+ *
+ * Sets whether the list should show separators
+ * between rows.
+ */
+void
+gtk_column_view_set_show_separators (GtkColumnView *self,
+                                     gboolean     show_separators)
+{
+  g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
+
+  if (gtk_list_view_get_show_separators (self->listview) == show_separators)
+    return;
+
+  gtk_list_view_set_show_separators (self->listview, show_separators);
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SHOW_SEPARATORS]);
+}
+
+/**
+ * gtk_column_view_get_show_separators:
+ * @self: a #GtkColumnView
+ *
+ * Returns whether the list box should show separators
+ * between rows.
+ *
+ * Returns: %TRUE if the list box shows separators
+ */
+gboolean
+gtk_column_view_get_show_separators (GtkColumnView *self)
+{
+  g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), FALSE);
+
+  return gtk_list_view_get_show_separators (self->listview);
+}
diff --git a/gtk/gtkcolumnview.h b/gtk/gtkcolumnview.h
new file mode 100644
index 0000000000..8e13cd92fb
--- /dev/null
+++ b/gtk/gtkcolumnview.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright © 2019 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that 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 library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GTK_COLUMN_VIEW_H__
+#define __GTK_COLUMN_VIEW_H__
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtklistbase.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_COLUMN_VIEW         (gtk_column_view_get_type ())
+#define GTK_COLUMN_VIEW(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_COLUMN_VIEW, GtkColumnView))
+#define GTK_COLUMN_VIEW_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST ((k), GTK_TYPE_COLUMN_VIEW, GtkColumnViewClass))
+#define GTK_IS_COLUMN_VIEW(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_COLUMN_VIEW))
+#define GTK_IS_COLUMN_VIEW_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GTK_TYPE_COLUMN_VIEW))
+#define GTK_COLUMN_VIEW_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_COLUMN_VIEW, GtkColumnViewClass))
+
+/**
+ * GtkColumnView:
+ *
+ * GtkColumnView is the simple list implementation for GTK's list widgets.
+ */
+typedef struct _GtkColumnView GtkColumnView;
+typedef struct _GtkColumnViewClass GtkColumnViewClass;
+/* forward declaration */
+typedef struct _GtkColumnViewColumn GtkColumnViewColumn;
+
+GDK_AVAILABLE_IN_ALL
+GType           gtk_column_view_get_type                        (void) G_GNUC_CONST;
+
+GDK_AVAILABLE_IN_ALL
+GtkWidget *     gtk_column_view_new                             (void);
+
+GDK_AVAILABLE_IN_ALL
+GListModel *    gtk_column_view_get_columns                     (GtkColumnView          *self);
+GDK_AVAILABLE_IN_ALL
+GListModel *    gtk_column_view_get_model                       (GtkColumnView          *self);
+GDK_AVAILABLE_IN_ALL
+void            gtk_column_view_set_model                       (GtkColumnView          *self,
+                                                                 GListModel             *model);
+GDK_AVAILABLE_IN_ALL
+gboolean        gtk_column_view_get_show_separators             (GtkColumnView          *self);
+GDK_AVAILABLE_IN_ALL
+void            gtk_column_view_set_show_separators             (GtkColumnView          *self,
+                                                                 gboolean                show_Separators);
+
+G_END_DECLS
+
+#endif  /* __GTK_COLUMN_VIEW_H__ */
diff --git a/gtk/gtkcolumnviewcolumn.c b/gtk/gtkcolumnviewcolumn.c
new file mode 100644
index 0000000000..c44beecd6b
--- /dev/null
+++ b/gtk/gtkcolumnviewcolumn.c
@@ -0,0 +1,338 @@
+/*
+ * Copyright © 2019 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that 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 library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gtkcolumnviewcolumn.h"
+
+#include "gtkintl.h"
+#include "gtklistbaseprivate.h"
+#include "gtklistitemmanagerprivate.h"
+#include "gtkmain.h"
+#include "gtkprivate.h"
+#include "gtkrbtreeprivate.h"
+#include "gtkstylecontext.h"
+#include "gtkwidgetprivate.h"
+
+/**
+ * SECTION:gtkcolumnviewcolumn
+ * @title: GtkColumnViewColumn
+ * @short_description: The column added to GtkColumnView
+ * @see_also: #GtkColumnView
+ *
+ * GtkColumnViewColumn represents the columns being added to #GtkColumnView.
+ */
+
+struct _GtkColumnViewColumn
+{
+  GObject parent_instance;
+
+  GtkListItemFactory *factory;
+  char *title;
+
+  /* data for the view */
+  GtkColumnView *view;
+};
+
+struct _GtkColumnViewColumnClass
+{
+  GObjectClass parent_class;
+};
+
+enum
+{
+  PROP_0,
+  PROP_COLUMN_VIEW,
+  PROP_FACTORY,
+  PROP_TITLE,
+
+  N_PROPS
+};
+
+G_DEFINE_TYPE (GtkColumnViewColumn, gtk_column_view_column, G_TYPE_OBJECT)
+
+static GParamSpec *properties[N_PROPS] = { NULL, };
+
+static void
+gtk_column_view_column_dispose (GObject *object)
+{
+  GtkColumnViewColumn *self = GTK_COLUMN_VIEW_COLUMN (object);
+
+  g_assert (self->view == NULL); /* would hold a ref otherwise */
+  g_clear_object (&self->factory);
+  g_clear_pointer (&self->title, g_free);
+
+  G_OBJECT_CLASS (gtk_column_view_column_parent_class)->dispose (object);
+}
+
+static void
+gtk_column_view_column_get_property (GObject    *object,
+                                     guint       property_id,
+                                     GValue     *value,
+                                     GParamSpec *pspec)
+{
+  GtkColumnViewColumn *self = GTK_COLUMN_VIEW_COLUMN (object);
+
+  switch (property_id)
+    {
+    case PROP_COLUMN_VIEW:
+      g_value_set_object (value, self->view);
+      break;
+
+    case PROP_FACTORY:
+      g_value_set_object (value, self->factory);
+      break;
+
+    case PROP_TITLE:
+      g_value_set_string (value, self->title);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_column_view_column_set_property (GObject      *object,
+                                     guint         property_id,
+                                     const GValue *value,
+                                     GParamSpec   *pspec)
+{
+  GtkColumnViewColumn *self = GTK_COLUMN_VIEW_COLUMN (object);
+
+  switch (property_id)
+    {
+    case PROP_FACTORY:
+      gtk_column_view_column_set_factory (self, g_value_get_object (value));
+      break;
+
+    case PROP_TITLE:
+      gtk_column_view_column_set_title (self, g_value_get_string (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_column_view_column_class_init (GtkColumnViewColumnClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->dispose = gtk_column_view_column_dispose;
+  gobject_class->get_property = gtk_column_view_column_get_property;
+  gobject_class->set_property = gtk_column_view_column_set_property;
+
+  /**
+   * GtkColumnViewColumn:column-view:
+   *
+   * #GtkColumnView this column is a part of
+   */
+  properties[PROP_COLUMN_VIEW] =
+    g_param_spec_object ("column-view",
+                         P_("Column view"),
+                         P_("Column view this column is a part of"),
+                         G_TYPE_LIST_MODEL,
+                         G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  /**
+   * GtkColumnViewColumn:factory:
+   *
+   * Factory for populating list items
+   */
+  properties[PROP_FACTORY] =
+    g_param_spec_object ("factory",
+                         P_("Factory"),
+                         P_("Factory for populating list items"),
+                         GTK_TYPE_LIST_ITEM_FACTORY,
+                         G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  /**
+   * GtkColumnViewColumn:title:
+   *
+   * Title displayed in the header
+   */
+  properties[PROP_TITLE] =
+    g_param_spec_string ("title",
+                          P_("Title"),
+                          P_("Title displayed in the header"),
+                          NULL,
+                          G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
+
+  g_object_class_install_properties (gobject_class, N_PROPS, properties);
+}
+
+static void
+gtk_column_view_column_init (GtkColumnViewColumn *self)
+{
+}
+
+/**
+ * gtk_column_view_column_new:
+ * @title: (nullable): Title to use for this column
+ *
+ * Creates a new #GtkColumnViewColumn.
+ *
+ * You most likely want to call gtk_column_add_column() next.
+ *
+ * Returns: a new #GtkColumnViewColumn
+ **/
+GtkColumnViewColumn *
+gtk_column_view_column_new (const char *title)
+{
+  return g_object_new (GTK_TYPE_COLUMN_VIEW_COLUMN,
+                       "title", title,
+                       NULL);
+}
+
+/**
+ * gtk_column_view_column_new_with_factory:
+ * @title: (nullable): Title to use for this column
+ * @factory: (transfer full): The factory to populate items with
+ *
+ * Creates a new #GtkColumnViewColumn that uses the given @factory for
+ * mapping items to widgets.
+ *
+ * You most likely want to call gtk_column_add_column() next.
+ *
+ * The function takes ownership of the
+ * argument, so you can write code like
+ * ```
+ *   column = gtk_column_view_column_new_with_factory (_("Name"),
+ *     gtk_builder_list_item_factory_new_from_resource ("/name.ui"));
+ * ```
+ *
+ * Returns: a new #GtkColumnViewColumn using the given @factory
+ **/
+GtkColumnViewColumn *
+gtk_column_view_column_new_with_factory (const char         *title,
+                                         GtkListItemFactory *factory)
+{
+  GtkColumnViewColumn *result;
+
+  g_return_val_if_fail (GTK_IS_LIST_ITEM_FACTORY (factory), NULL);
+
+  result = g_object_new (GTK_TYPE_COLUMN_VIEW_COLUMN,
+                         "factory", factory,
+                         "title", title,
+                         NULL);
+
+  g_object_unref (factory);
+
+  return result;
+}
+
+/**
+ * gtk_column_view_column_get_column_view:
+ * @self: a #GtkColumnViewColumn
+ *
+ * Gets the column view that's currently displaying this column.
+ *
+ * If @self has not been added to a column view yet, %NULL is returned.
+ *
+ * Returns: (nullable) (transfer none): The column view displaying @self.
+ **/
+GtkColumnView *
+gtk_column_view_column_get_column_view (GtkColumnViewColumn *self)
+{
+  g_return_val_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (self), NULL);
+
+  return self->view;
+}
+
+/**
+ * gtk_column_view_column_get_factory:
+ * @self: a #GtkColumnViewColumn
+ *
+ * Gets the factory that's currently used to populate list items for
+ * this column.
+ *
+ * Returns: (nullable) (transfer none): The factory in use
+ **/
+GtkListItemFactory *
+gtk_column_view_column_get_factory (GtkColumnViewColumn *self)
+{
+  g_return_val_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (self), NULL);
+
+  return self->factory;
+}
+
+/**
+ * gtk_column_view_column_set_factory:
+ * @self: a #GtkColumnViewColumn
+ * @factory: (allow-none) (transfer none): the factory to use or %NULL for none
+ *
+ * Sets the #GtkListItemFactory to use for populating list items for this
+ * column.
+ **/
+void
+gtk_column_view_column_set_factory (GtkColumnViewColumn *self,
+                                    GtkListItemFactory  *factory)
+{
+  g_return_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (self));
+  g_return_if_fail (factory == NULL || GTK_LIST_ITEM_FACTORY (factory));
+
+  if (!g_set_object (&self->factory, factory))
+    return;
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_FACTORY]);
+}
+
+/**
+ * gtk_column_view_column_set_title:
+ * @self: a #GtkColumnViewColumn
+ * @title: (nullable): Title to use for this column
+ *
+ * Sets the title of this column. The title is displayed in the header of a
+ * #GtkColumnView for this column and is therefor user-facing text that should
+ * be translated.
+ */
+void
+gtk_column_view_column_set_title (GtkColumnViewColumn *self,
+                                  const char          *title)
+{
+  g_return_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (self));
+
+  if (g_strcmp0 (self->title, title) == 0)
+    return;
+
+  g_free (self->title);
+  self->title = g_strdup (title);
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TITLE]);
+}
+
+/**
+ * gtk_column_view_column_get_title:
+ * @self: a #GtkColumnViewColumn
+ *
+ * Returns the title set with gtk_column_view_column_set_title().
+ *
+ * Returns: (nullable) The column's title
+ */
+const char *
+gtk_column_view_column_get_title (GtkColumnViewColumn *self)
+{
+  g_return_val_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (self), FALSE);
+
+  return self->title;
+}
diff --git a/gtk/gtkcolumnviewcolumn.h b/gtk/gtkcolumnviewcolumn.h
new file mode 100644
index 0000000000..612cdb1854
--- /dev/null
+++ b/gtk/gtkcolumnviewcolumn.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright © 2019 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that 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 library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GTK_COLUMN_VIEW_COLUMN_H__
+#define __GTK_COLUMN_VIEW_COLUMN_H__
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtkcolumnview.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_COLUMN_VIEW_COLUMN         (gtk_column_view_column_get_type ())
+#define GTK_COLUMN_VIEW_COLUMN(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_COLUMN_VIEW_COLUMN, GtkColumnViewColumn))
+#define GTK_COLUMN_VIEW_COLUMN_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST ((k), GTK_TYPE_COLUMN_VIEW_COLUMN, GtkColumnViewColumnClass))
+#define GTK_IS_COLUMN_VIEW_COLUMN(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_COLUMN_VIEW_COLUMN))
+#define GTK_IS_COLUMN_VIEW_COLUMN_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GTK_TYPE_COLUMN_VIEW_COLUMN))
+#define GTK_COLUMN_VIEW_COLUMN_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_COLUMN_VIEW_COLUMN, GtkColumnViewColumnClass))
+
+/**
+ * GtkColumnViewColumn:
+ *
+ * GtkColumnViewColumns are added to #GtkColumnViews.
+ */
+typedef struct _GtkColumnViewColumnClass GtkColumnViewColumnClass;
+
+GDK_AVAILABLE_IN_ALL
+GType                   gtk_column_view_column_get_type                 (void) G_GNUC_CONST;
+
+GDK_AVAILABLE_IN_ALL
+GtkColumnViewColumn *   gtk_column_view_column_new                      (const char             *title);
+GDK_AVAILABLE_IN_ALL
+GtkColumnViewColumn *   gtk_column_view_column_new_with_factory         (const char             *title,
+                                                                         GtkListItemFactory     *factory);
+
+GDK_AVAILABLE_IN_ALL
+GtkColumnView *         gtk_column_view_column_get_column_view          (GtkColumnViewColumn    *self);
+GDK_AVAILABLE_IN_ALL
+void                    gtk_column_view_column_set_factory              (GtkColumnViewColumn    *self,
+                                                                         GtkListItemFactory     *factory);
+GDK_AVAILABLE_IN_ALL
+GtkListItemFactory *    gtk_column_view_column_get_factory              (GtkColumnViewColumn    *self);
+
+GDK_AVAILABLE_IN_ALL
+void                    gtk_column_view_column_set_title                (GtkColumnViewColumn    *self,
+                                                                         const char             *title);
+GDK_AVAILABLE_IN_ALL
+const char *            gtk_column_view_column_get_title                (GtkColumnViewColumn    *self);
+
+G_END_DECLS
+
+#endif  /* __GTK_COLUMN_VIEW_COLUMN_H__ */
diff --git a/gtk/meson.build b/gtk/meson.build
index 937f0fbe7d..4c90a253c1 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -204,6 +204,8 @@ gtk_public_sources = files([
   'gtkcolorchooserdialog.c',
   'gtkcolorchooserwidget.c',
   'gtkcolorutils.c',
+  'gtkcolumnview.c',
+  'gtkcolumnviewcolumn.c',
   'gtkcombobox.c',
   'gtkcomboboxtext.c',
   'gtkcomposetable.c',
@@ -481,6 +483,8 @@ gtk_public_headers = files([
   'gtkcolorchooserdialog.h',
   'gtkcolorchooserwidget.h',
   'gtkcolorutils.h',
+  'gtkcolumnview.h',
+  'gtkcolumnviewcolumn.h',
   'gtkcombobox.h',
   'gtkcomboboxtext.h',
   'gtkconstraintguide.h',