Add GtkColumnView skeleton

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

1 files changed, 358 insertions, 0 deletions

diff --git a/gtk/gtkcolumnview.c b/gtk/gtkcolumnview.c
new file mode 100644
index 0000000000..63124085b5
--- /dev/null
+++ b/gtk/gtkcolumnview.c
@@ -0,0 +1,358 @@
+/*
+ * 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 "gtkboxlayout.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"));
+  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
+}
+
+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);
+}