Import Upstream version 43.0upstream/latest

1 files changed, 1056 insertions, 0 deletions

diff --git a/src/gui/gtd-menu-button.c b/src/gui/gtd-menu-button.c
new file mode 100644
index 0000000..e9f12be
--- /dev/null
+++ b/src/gui/gtd-menu-button.c
@@ -0,0 +1,1056 @@
+/* gtd-menu-button.c
+ *
+ * Copyright 2020 Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "gtd-menu-button.h"
+
+typedef struct
+{
+  GIcon              *icon;
+
+  GtkWidget          *button;
+  GtkWidget          *popover; /* Only one at a time can be set */
+  GMenuModel         *model;
+
+  GtdMenuButtonCreatePopupFunc create_popup_func;
+  gpointer            create_popup_user_data;
+  GDestroyNotify      create_popup_destroy_notify;
+
+  GtkWidget          *label_widget;
+  GtkWidget          *align_widget;
+  GtkWidget          *arrow_widget;
+  GtkArrowType        arrow_type;
+} GtdMenuButtonPrivate;
+
+enum
+{
+  PROP_0,
+  PROP_MENU_MODEL,
+  PROP_ALIGN_WIDGET,
+  PROP_DIRECTION,
+  PROP_POPOVER,
+  PROP_GICON,
+  PROP_LABEL,
+  PROP_USE_UNDERLINE,
+  PROP_HAS_FRAME,
+  LAST_PROP
+};
+
+static GParamSpec *menu_button_props[LAST_PROP];
+
+G_DEFINE_TYPE_WITH_PRIVATE (GtdMenuButton, gtd_menu_button, GTK_TYPE_WIDGET)
+
+static void
+update_sensitivity (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  gtk_widget_set_sensitive (priv->button,
+                            priv->popover != NULL ||
+                            priv->create_popup_func != NULL);
+}
+
+static void
+update_popover_direction (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  if (!priv->popover)
+    return;
+
+  switch (priv->arrow_type)
+    {
+    case GTK_ARROW_UP:
+      gtk_popover_set_position (GTK_POPOVER (priv->popover), GTK_POS_TOP);
+      break;
+    case GTK_ARROW_DOWN:
+    case GTK_ARROW_NONE:
+      gtk_popover_set_position (GTK_POPOVER (priv->popover), GTK_POS_BOTTOM);
+      break;
+    case GTK_ARROW_LEFT:
+      gtk_popover_set_position (GTK_POPOVER (priv->popover), GTK_POS_LEFT);
+      break;
+    case GTK_ARROW_RIGHT:
+      gtk_popover_set_position (GTK_POPOVER (priv->popover), GTK_POS_RIGHT);
+      break;
+    default:
+      break;
+    }
+}
+
+static void
+set_arrow_type (GtkImage     *image,
+                GtkArrowType  arrow_type)
+{
+  switch (arrow_type)
+    {
+    case GTK_ARROW_NONE:
+      gtk_image_set_from_icon_name (image, "open-menu-symbolic");
+      break;
+    case GTK_ARROW_DOWN:
+      gtk_image_set_from_icon_name (image, "pan-down-symbolic");
+      break;
+    case GTK_ARROW_UP:
+      gtk_image_set_from_icon_name (image, "pan-up-symbolic");
+      break;
+    case GTK_ARROW_LEFT:
+      gtk_image_set_from_icon_name (image, "pan-start-symbolic");
+      break;
+    case GTK_ARROW_RIGHT:
+      gtk_image_set_from_icon_name (image, "pan-end-symbolic");
+      break;
+    default:
+      break;
+    }
+}
+
+static void
+add_arrow (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv;
+  GtkWidget *arrow;
+
+  priv = gtd_menu_button_get_instance_private (self);
+
+  arrow = gtk_image_new ();
+  set_arrow_type (GTK_IMAGE (arrow), priv->arrow_type);
+  gtk_button_set_child (GTK_BUTTON (priv->button), arrow);
+  priv->arrow_widget = arrow;
+}
+
+static void
+set_align_widget_pointer (GtdMenuButton *self,
+                          GtkWidget     *align_widget)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  if (priv->align_widget)
+    g_object_remove_weak_pointer (G_OBJECT (priv->align_widget), (gpointer *) &priv->align_widget);
+
+  priv->align_widget = align_widget;
+
+  if (priv->align_widget)
+    g_object_add_weak_pointer (G_OBJECT (priv->align_widget), (gpointer *) &priv->align_widget);
+}
+
+
+/*
+ * Callbacks
+ */
+
+static gboolean
+menu_deactivate_cb (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button), FALSE);
+
+  return TRUE;
+}
+
+static void
+popover_destroy_cb (GtdMenuButton *self)
+{
+  gtd_menu_button_set_popover (self, NULL);
+}
+
+
+/*
+ * GtkWidget overrides
+ */
+
+static void
+gtd_menu_button_state_flags_changed (GtkWidget    *widget,
+                                     GtkStateFlags previous_state_flags)
+{
+  GtdMenuButton *self = GTD_MENU_BUTTON (widget);
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  if (!gtk_widget_is_sensitive (widget))
+    {
+      if (priv->popover)
+        gtk_widget_hide (priv->popover);
+    }
+}
+
+static void
+gtd_menu_button_toggled (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  const gboolean active = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->button));
+
+  /* Might set a new menu/popover */
+  if (active && priv->create_popup_func)
+    {
+      priv->create_popup_func (self, priv->create_popup_user_data);
+    }
+
+  if (priv->popover)
+    {
+      if (active)
+        gtk_popover_popup (GTK_POPOVER (priv->popover));
+      else
+        gtk_popover_popdown (GTK_POPOVER (priv->popover));
+    }
+}
+
+static void
+gtd_menu_button_measure (GtkWidget      *widget,
+                         GtkOrientation  orientation,
+                         int             for_size,
+                         int            *minimum,
+                         int            *natural,
+                         int            *minimum_baseline,
+                         int            *natural_baseline)
+{
+  GtdMenuButton *self = GTD_MENU_BUTTON (widget);
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  gtk_widget_measure (priv->button,
+                      orientation,
+                      for_size,
+                      minimum, natural,
+                      minimum_baseline, natural_baseline);
+
+}
+
+static void
+gtd_menu_button_size_allocate (GtkWidget *widget,
+                               int        width,
+                               int        height,
+                               int        baseline)
+{
+  GtdMenuButton *self= GTD_MENU_BUTTON (widget);
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  gtk_widget_size_allocate (priv->button,
+                            &(GtkAllocation) { 0, 0, width, height },
+                            baseline);
+  if (priv->popover)
+    gtk_popover_present (GTK_POPOVER (priv->popover));
+}
+
+static gboolean
+gtd_menu_button_focus (GtkWidget        *widget,
+                       GtkDirectionType  direction)
+{
+  GtdMenuButton *self = GTD_MENU_BUTTON (widget);
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  if (priv->popover && gtk_widget_get_visible (priv->popover))
+    return gtk_widget_child_focus (priv->popover, direction);
+  else
+    return gtk_widget_child_focus (priv->button, direction);
+}
+
+static gboolean
+gtd_menu_button_grab_focus (GtkWidget *widget)
+{
+  GtdMenuButton *self = GTD_MENU_BUTTON (widget);
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  return gtk_widget_grab_focus (priv->button);
+}
+
+
+/*
+ * GObject overrides
+ */
+
+static void
+gtd_menu_button_set_property (GObject      *object,
+                              guint         property_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+{
+  GtdMenuButton *self = GTD_MENU_BUTTON (object);
+
+  switch (property_id)
+    {
+      case PROP_MENU_MODEL:
+        gtd_menu_button_set_menu_model (self, g_value_get_object (value));
+        break;
+
+      case PROP_ALIGN_WIDGET:
+        gtd_menu_button_set_align_widget (self, g_value_get_object (value));
+        break;
+
+      case PROP_DIRECTION:
+        gtd_menu_button_set_direction (self, g_value_get_enum (value));
+        break;
+
+      case PROP_POPOVER:
+        gtd_menu_button_set_popover (self, g_value_get_object (value));
+        break;
+
+      case PROP_GICON:
+        gtd_menu_button_set_gicon (self, g_value_get_object (value));
+        break;
+
+      case PROP_LABEL:
+        gtd_menu_button_set_label (self, g_value_get_string (value));
+        break;
+
+      case PROP_USE_UNDERLINE:
+        gtd_menu_button_set_use_underline (self, g_value_get_boolean (value));
+        break;
+
+      case PROP_HAS_FRAME:
+        gtd_menu_button_set_has_frame (self, g_value_get_boolean (value));
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+gtd_menu_button_get_property (GObject    *object,
+                              guint       property_id,
+                              GValue     *value,
+                              GParamSpec *pspec)
+{
+  GtdMenuButton *self = GTD_MENU_BUTTON (object);
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  switch (property_id)
+    {
+      case PROP_MENU_MODEL:
+        g_value_set_object (value, priv->model);
+        break;
+
+      case PROP_ALIGN_WIDGET:
+        g_value_set_object (value, priv->align_widget);
+        break;
+
+      case PROP_DIRECTION:
+        g_value_set_enum (value, priv->arrow_type);
+        break;
+
+      case PROP_POPOVER:
+        g_value_set_object (value, priv->popover);
+        break;
+
+      case PROP_GICON:
+        g_value_set_object (value, priv->icon);
+        break;
+
+      case PROP_LABEL:
+        g_value_set_string (value, gtd_menu_button_get_label (GTD_MENU_BUTTON (object)));
+        break;
+
+      case PROP_USE_UNDERLINE:
+        g_value_set_boolean (value, gtd_menu_button_get_use_underline (GTD_MENU_BUTTON (object)));
+        break;
+
+      case PROP_HAS_FRAME:
+        g_value_set_boolean (value, gtd_menu_button_get_has_frame (GTD_MENU_BUTTON (object)));
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+gtd_menu_button_dispose (GObject *object)
+{
+  GtdMenuButton *self = GTD_MENU_BUTTON (object);
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  if (priv->popover)
+    {
+      g_signal_handlers_disconnect_by_func (priv->popover, menu_deactivate_cb, object);
+      g_signal_handlers_disconnect_by_func (priv->popover, popover_destroy_cb, object);
+      gtk_widget_unparent (priv->popover);
+      priv->popover = NULL;
+    }
+
+  set_align_widget_pointer (GTD_MENU_BUTTON (object), NULL);
+
+  g_clear_object (&priv->model);
+  g_clear_pointer (&priv->button, gtk_widget_unparent);
+
+  if (priv->create_popup_destroy_notify)
+    priv->create_popup_destroy_notify (priv->create_popup_user_data);
+
+  G_OBJECT_CLASS (gtd_menu_button_parent_class)->dispose (object);
+}
+
+static void
+gtd_menu_button_class_init (GtdMenuButtonClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  gobject_class->set_property = gtd_menu_button_set_property;
+  gobject_class->get_property = gtd_menu_button_get_property;
+  gobject_class->dispose = gtd_menu_button_dispose;
+
+  widget_class->measure = gtd_menu_button_measure;
+  widget_class->size_allocate = gtd_menu_button_size_allocate;
+  widget_class->state_flags_changed = gtd_menu_button_state_flags_changed;
+  widget_class->focus = gtd_menu_button_focus;
+  widget_class->grab_focus = gtd_menu_button_grab_focus;
+
+  /**
+   * GtdMenuButton:menu-model:
+   *
+   * The #GMenuModel from which the popup will be created.
+   *
+   * See gtd_menu_button_set_menu_model() for the interaction with the
+   * #GtdMenuButton:popup property.
+   */
+  menu_button_props[PROP_MENU_MODEL] =
+      g_param_spec_object ("menu-model",
+                           "Menu model",
+                           "The model from which the popup is made.",
+                           G_TYPE_MENU_MODEL,
+                           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+
+  /**
+   * GtdMenuButton:align-widget:
+   *
+   * The #GtkWidget to use to align the menu with.
+   */
+  menu_button_props[PROP_ALIGN_WIDGET] =
+      g_param_spec_object ("align-widget",
+                           "Align with",
+                           "The parent widget which the menu should align with.",
+                           GTK_TYPE_WIDGET,
+                           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+
+  /**
+   * GtdMenuButton:direction:
+   *
+   * The #GtkArrowType representing the direction in which the
+   * menu or popover will be popped out.
+   */
+  menu_button_props[PROP_DIRECTION] =
+      g_param_spec_enum ("direction",
+                         "Direction",
+                         "The direction the arrow should point.",
+                         GTK_TYPE_ARROW_TYPE,
+                         GTK_ARROW_DOWN,
+                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+  /**
+   * GtdMenuButton:popover:
+   *
+   * The #GtkPopover that will be popped up when the button is clicked.
+   */
+  menu_button_props[PROP_POPOVER] =
+      g_param_spec_object ("popover",
+                           "Popover",
+                           "The popover",
+                           GTK_TYPE_POPOVER,
+                           G_PARAM_READWRITE);
+
+  menu_button_props[PROP_GICON] =
+      g_param_spec_string ("icon-name",
+                           "Icon Name",
+                           "The name of the icon used to automatically populate the button",
+                           NULL,
+                           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+  /**
+   * GtdMenuButton:gicon:
+   *
+   */
+  menu_button_props[PROP_GICON] =
+      g_param_spec_object ("gicon",
+                           "GIcon",
+                           "A GIcon",
+                           G_TYPE_ICON,
+                           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+  menu_button_props[PROP_LABEL] =
+      g_param_spec_string ("label",
+                           "Label",
+                           "The label for the button",
+                           NULL,
+                           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+  menu_button_props[PROP_USE_UNDERLINE] =
+      g_param_spec_boolean ("use-underline",
+                            "Use underline",
+                            "If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key",
+                           FALSE,
+                           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+  menu_button_props[PROP_HAS_FRAME] =
+    g_param_spec_boolean ("has-frame",
+                          "Has frame",
+                          "Whether the button has a frame",
+                          TRUE,
+                          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+  g_object_class_install_properties (gobject_class, LAST_PROP, menu_button_props);
+
+  gtk_widget_class_set_css_name (widget_class, "menubutton");
+}
+
+static void
+gtd_menu_button_init (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  priv->arrow_type = GTK_ARROW_DOWN;
+
+  priv->button = gtk_toggle_button_new ();
+  gtk_widget_set_parent (priv->button, GTK_WIDGET (self));
+  g_signal_connect_swapped (priv->button, "toggled", G_CALLBACK (gtd_menu_button_toggled), self);
+  add_arrow (self);
+
+  gtk_widget_set_sensitive (priv->button, FALSE);
+
+  gtk_widget_add_css_class (GTK_WIDGET (self), "popup");
+}
+
+/**
+ * gtd_menu_button_new:
+ *
+ * Creates a new #GtdMenuButton widget with downwards-pointing
+ * arrow as the only child. You can replace the child widget
+ * with another #GtkWidget should you wish to.
+ *
+ * Returns: The newly created #GtdMenuButton widget
+ */
+GtkWidget *
+gtd_menu_button_new (void)
+{
+  return g_object_new (GTD_TYPE_MENU_BUTTON, NULL);
+}
+
+/**
+ * gtd_menu_button_set_menu_model:
+ * @self: a #GtdMenuButton
+ * @menu_model: (nullable): a #GMenuModel, or %NULL to unset and disable the
+ *   button
+ *
+ * Sets the #GMenuModel from which the popup will be constructed,
+ * or %NULL to dissociate any existing menu model and disable the button.
+ *
+ * A #GtkPopover will be created from the menu model with gtk_popover_menu_new_from_model().
+ * Actions will be connected as documented for this function.
+ *
+ * If #GtdMenuButton:popover is already set, it will be dissociated from the @menu_button,
+ * and the property is set to %NULL.
+ */
+void
+gtd_menu_button_set_menu_model (GtdMenuButton *self,
+                                GMenuModel    *menu_model)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+  g_return_if_fail (G_IS_MENU_MODEL (menu_model) || menu_model == NULL);
+
+  g_object_freeze_notify (G_OBJECT (self));
+
+  if (menu_model)
+    g_object_ref (menu_model);
+
+  if (menu_model)
+    {
+      GtkWidget *popover;
+
+      popover = gtk_popover_menu_new_from_model (menu_model);
+      gtd_menu_button_set_popover (self, popover);
+    }
+  else
+    {
+      gtd_menu_button_set_popover (self, NULL);
+    }
+
+  priv->model = menu_model;
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_MENU_MODEL]);
+
+  g_object_thaw_notify (G_OBJECT (self));
+}
+
+/**
+ * gtd_menu_button_get_menu_model:
+ * @self: a #GtdMenuButton
+ *
+ * Returns the #GMenuModel used to generate the popup.
+ *
+ * Returns: (nullable) (transfer none): a #GMenuModel or %NULL
+ */
+GMenuModel *
+gtd_menu_button_get_menu_model (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), NULL);
+
+  return priv->model;
+}
+
+/**
+ * gtd_menu_button_set_align_widget:
+ * @self: a #GtdMenuButton
+ * @align_widget: (allow-none): a #GtkWidget
+ *
+ * Sets the #GtkWidget to use to line the menu with when popped up.
+ * Note that the @align_widget must contain the #GtdMenuButton itself.
+ *
+ * Setting it to %NULL means that the menu will be aligned with the
+ * button itself.
+ *
+ * Note that this property is only used with menus currently,
+ * and not for popovers.
+ */
+void
+gtd_menu_button_set_align_widget (GtdMenuButton *self,
+                                  GtkWidget     *align_widget)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+  g_return_if_fail (align_widget == NULL || gtk_widget_is_ancestor (GTK_WIDGET (self), align_widget));
+
+  if (priv->align_widget == align_widget)
+    return;
+
+  set_align_widget_pointer (self, align_widget);
+
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_ALIGN_WIDGET]);
+}
+
+/**
+ * gtd_menu_button_get_align_widget:
+ * @self: a #GtdMenuButton
+ *
+ * Returns the parent #GtkWidget to use to line up with menu.
+ *
+ * Returns: (nullable) (transfer none): a #GtkWidget value or %NULL
+ */
+GtkWidget *
+gtd_menu_button_get_align_widget (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), NULL);
+
+  return priv->align_widget;
+}
+
+/**
+ * gtd_menu_button_set_direction:
+ * @self: a #GtdMenuButton
+ * @direction: a #GtkArrowType
+ *
+ * Sets the direction in which the popup will be popped up, as
+ * well as changing the arrow’s direction. The child will not
+ * be changed to an arrow if it was customized.
+ *
+ * If the does not fit in the available space in the given direction,
+ * GTK+ will its best to keep it inside the screen and fully visible.
+ *
+ * If you pass %GTK_ARROW_NONE for a @direction, the popup will behave
+ * as if you passed %GTK_ARROW_DOWN (although you won’t see any arrows).
+ */
+void
+gtd_menu_button_set_direction (GtdMenuButton *self,
+                               GtkArrowType   direction)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+  GtkWidget *child;
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  if (priv->arrow_type == direction)
+    return;
+
+  priv->arrow_type = direction;
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_DIRECTION]);
+
+  /* Is it custom content? We don't change that */
+  child = gtk_button_get_child (GTK_BUTTON (priv->button));
+  if (priv->arrow_widget != child)
+    return;
+
+  set_arrow_type (GTK_IMAGE (child), priv->arrow_type);
+  update_popover_direction (self);
+}
+
+/**
+ * gtd_menu_button_get_direction:
+ * @self: a #GtdMenuButton
+ *
+ * Returns the direction the popup will be pointing at when popped up.
+ *
+ * Returns: a #GtkArrowType value
+ */
+GtkArrowType
+gtd_menu_button_get_direction (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), GTK_ARROW_DOWN);
+
+  return priv->arrow_type;
+}
+
+/**
+ * gtd_menu_button_set_popover:
+ * @self: a #GtdMenuButton
+ * @popover: (nullable): a #GtkPopover, or %NULL to unset and disable the button
+ *
+ * Sets the #GtkPopover that will be popped up when the @menu_button is clicked,
+ * or %NULL to dissociate any existing popover and disable the button.
+ *
+ * If #GtdMenuButton:menu-model is set, the menu model is dissociated from the
+ * @menu_button, and the property is set to %NULL.
+ */
+void
+gtd_menu_button_set_popover (GtdMenuButton *self,
+                             GtkWidget     *popover)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+  g_return_if_fail (GTK_IS_POPOVER (popover) || popover == NULL);
+
+  g_object_freeze_notify (G_OBJECT (self));
+
+  g_clear_object (&priv->model);
+
+  if (priv->popover)
+    {
+      if (gtk_widget_get_visible (priv->popover))
+        gtk_widget_hide (priv->popover);
+
+      g_signal_handlers_disconnect_by_func (priv->popover, menu_deactivate_cb, self);
+      g_signal_handlers_disconnect_by_func (priv->popover, popover_destroy_cb, self);
+
+      gtk_widget_unparent (priv->popover);
+    }
+
+  priv->popover = popover;
+
+  if (popover)
+    {
+      gtk_widget_set_parent (priv->popover, GTK_WIDGET (self));
+      g_signal_connect_swapped (priv->popover, "closed", G_CALLBACK (menu_deactivate_cb), self);
+      g_signal_connect_swapped (priv->popover, "destroy", G_CALLBACK (popover_destroy_cb), self);
+      update_popover_direction (self);
+    }
+
+  update_sensitivity (self);
+
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_POPOVER]);
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_MENU_MODEL]);
+  g_object_thaw_notify (G_OBJECT (self));
+}
+
+/**
+ * gtd_menu_button_get_popover:
+ * @self: a #GtdMenuButton
+ *
+ * Returns the #GtkPopover that pops out of the button.
+ * If the button is not using a #GtkPopover, this function
+ * returns %NULL.
+ *
+ * Returns: (nullable) (transfer none): a #GtkPopover or %NULL
+ */
+GtkPopover *
+gtd_menu_button_get_popover (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), NULL);
+
+  return GTK_POPOVER (priv->popover);
+}
+
+/**
+ * gtd_menu_button_set_icon_name:
+ * @self: a #GtdMenuButton
+ * @icon_name: the icon name
+ *
+ * Sets the name of an icon to show inside the menu button.
+ */
+void
+gtd_menu_button_set_gicon (GtdMenuButton *self,
+                           GIcon         *icon)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+  GtkWidget *box;
+  GtkWidget *icon_image;
+  GtkWidget *image;
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  gtk_widget_set_margin_start (box, 6);
+  gtk_widget_set_margin_end (box, 6);
+
+  icon_image = gtk_image_new_from_gicon (icon);
+  gtk_widget_set_hexpand (icon_image, TRUE);
+
+  image = gtk_image_new_from_icon_name ("pan-down-symbolic");
+
+  gtk_box_append (GTK_BOX (box), icon_image);
+  gtk_box_append (GTK_BOX (box), image);
+  gtk_button_set_child (GTK_BUTTON (priv->button), box);
+
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_GICON]);
+}
+
+/**
+ * gtd_menu_button_get_gicon:
+ * @self: a #GtdMenuButton
+ *
+ * Gets the name of the icon shown in the button.
+ *
+ * Returns: (transfer full): the name of the icon shown in the button
+ */
+GIcon*
+gtd_menu_button_get_gicon (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), NULL);
+
+  return priv->icon;
+}
+
+/**
+ * gtd_menu_button_set_label:
+ * @self: a #GtdMenuButton
+ * @label: the label
+ *
+ * Sets the label to show inside the menu button.
+ */
+void
+gtd_menu_button_set_label (GtdMenuButton *self,
+                           const gchar   *label)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+  GtkWidget *box;
+  GtkWidget *label_widget;
+  GtkWidget *image;
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  gtk_widget_set_margin_start (box, 6);
+  gtk_widget_set_margin_end (box, 6);
+
+  label_widget = gtk_label_new (label);
+  gtk_label_set_xalign (GTK_LABEL (label_widget), 0);
+  gtk_label_set_use_underline (GTK_LABEL (label_widget),
+                               gtk_button_get_use_underline (GTK_BUTTON (priv->button)));
+  gtk_widget_set_hexpand (label_widget, TRUE);
+  image = gtk_image_new_from_icon_name ("pan-down-symbolic");
+  gtk_box_append (GTK_BOX (box), label_widget);
+  gtk_box_append (GTK_BOX (box), image);
+  gtk_button_set_child (GTK_BUTTON (priv->button), box);
+  priv->label_widget = label_widget;
+
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_LABEL]);
+}
+
+/**
+ * gtd_menu_button_get_label:
+ * @self: a #GtdMenuButton
+ *
+ * Gets the label shown in the button
+ *
+ * Returns: the label shown in the button
+ */
+const gchar*
+gtd_menu_button_get_label (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+  GtkWidget *child;
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), NULL);
+
+  child = gtk_button_get_child (GTK_BUTTON (priv->button));
+  if (GTK_IS_BOX (child))
+    {
+      child = gtk_widget_get_first_child (child);
+      return gtk_label_get_label (GTK_LABEL (child));
+    }
+
+  return NULL;
+}
+
+/**
+ * gtd_menu_button_set_has_frame:
+ * @self: a #GtdMenuButton
+ * @has_frame: whether the button should have a visible frame
+ *
+ * Sets the style of the button.
+ */
+void
+gtd_menu_button_set_has_frame (GtdMenuButton *self,
+                               gboolean       has_frame)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  if (gtk_button_get_has_frame (GTK_BUTTON (priv->button)) == has_frame)
+    return;
+
+  gtk_button_set_has_frame (GTK_BUTTON (priv->button), has_frame);
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_HAS_FRAME]);
+}
+
+/**
+ * gtd_menu_button_get_has_frame:
+ * @self: a #GtdMenuButton
+ *
+ * Returns whether the button has a frame.
+ *
+ * Returns: %TRUE if the button has a frame
+ */
+gboolean
+gtd_menu_button_get_has_frame (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), TRUE);
+
+  return gtk_button_get_has_frame (GTK_BUTTON (priv->button));
+}
+
+/**
+ * gtd_menu_button_popup:
+ * @self: a #GtdMenuButton
+ *
+ * Pop up the menu.
+ */
+void
+gtd_menu_button_popup (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button), TRUE);
+}
+
+/**
+ * gtd_menu_button_popdown:
+ * @self: a #GtdMenuButton
+ *
+ * Dismiss the menu.
+ */
+void
+gtd_menu_button_popdown (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button), FALSE);
+}
+
+/**
+ * gtd_menu_button_set_create_popup_func:
+ * @self: a #GtdMenuButton
+ * @func: (nullable): function to call when a popuop is about to
+ *   be shown, but none has been provided via other means, or %NULL
+ *   to reset to default behavior.
+ * @user_data: (closure): user data to pass to @func.
+ * @destroy_notify: (nullable): destroy notify for @user_data
+ *
+ * Sets @func to be called when a popup is about to be shown.
+ * @func should use one of
+ *
+ *  - gtd_menu_button_set_popover()
+ *  - gtd_menu_button_set_menu_model()
+ *
+ * to set a popup for @menu_button.
+ * If @func is non-%NULL, @menu_button will always be sensitive.
+ *
+ * Using this function will not reset the menu widget attached to @menu_button.
+ * Instead, this can be done manually in @func.
+ */
+void
+gtd_menu_button_set_create_popup_func (GtdMenuButton                *self,
+                                       GtdMenuButtonCreatePopupFunc  func,
+                                       gpointer                      user_data,
+                                       GDestroyNotify                destroy_notify)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  if (priv->create_popup_destroy_notify)
+    priv->create_popup_destroy_notify (priv->create_popup_user_data);
+
+  priv->create_popup_func = func;
+  priv->create_popup_user_data = user_data;
+  priv->create_popup_destroy_notify = destroy_notify;
+
+  update_sensitivity (self);
+}
+
+/**
+ * gtd_menu_button_set_use_underline:
+ * @self: a #GtdMenuButton
+ * @use_underline: %TRUE if underlines in the text indicate mnemonics
+ *
+ * If true, an underline in the text indicates the next character should be
+ * used for the mnemonic accelerator key.
+ */
+void
+gtd_menu_button_set_use_underline (GtdMenuButton *self,
+                                   gboolean       use_underline)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_if_fail (GTD_IS_MENU_BUTTON (self));
+
+  if (gtk_button_get_use_underline (GTK_BUTTON (priv->button)) == use_underline)
+    return;
+
+  gtk_button_set_use_underline (GTK_BUTTON (priv->button), use_underline);
+  if (priv->label_widget)
+    gtk_label_set_use_underline (GTK_LABEL (priv->label_widget), use_underline);
+
+  g_object_notify_by_pspec (G_OBJECT (self), menu_button_props[PROP_USE_UNDERLINE]);
+}
+
+/**
+ * gtd_menu_button_get_use_underline:
+ * @self: a #GtdMenuButton
+ *
+ * Returns whether an embedded underline in the text indicates a
+ * mnemonic. See gtd_menu_button_set_use_underline().
+ *
+ * Returns: %TRUE whether an embedded underline in the text indicates
+ *     the mnemonic accelerator keys.
+ */
+gboolean
+gtd_menu_button_get_use_underline (GtdMenuButton *self)
+{
+  GtdMenuButtonPrivate *priv = gtd_menu_button_get_instance_private (self);
+
+  g_return_val_if_fail (GTD_IS_MENU_BUTTON (self), FALSE);
+
+  return gtk_button_get_use_underline (GTK_BUTTON (priv->button));
+}