[gtk/prop-list: 207/220] Add GtkDropDown
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/prop-list: 207/220] Add GtkDropDown
- Date: Sun, 15 Dec 2019 21:02:32 +0000 (UTC)
commit b91449a464681450afdd71cbcd86f5448d78a067
Author: Matthias Clasen <mclasen redhat com>
Date: Sun Dec 8 20:22:06 2019 -0500
Add GtkDropDown
This is a simple drop down control using list models.
docs/reference/gtk/gtk4-docs.xml | 2 +
docs/reference/gtk/gtk4-sections.txt | 24 +
docs/reference/gtk/gtk4.types.in | 1 +
gtk/gtk.h | 1 +
gtk/gtkdropdown.c | 1208 ++++++++++++++++++++++++++++++++++
gtk/gtkdropdown.h | 80 +++
gtk/meson.build | 2 +
gtk/ui/gtkdropdown.ui | 75 +++
tests/meson.build | 1 +
tests/testdropdown.c | 305 +++++++++
10 files changed, 1699 insertions(+)
---
diff --git a/docs/reference/gtk/gtk4-docs.xml b/docs/reference/gtk/gtk4-docs.xml
index c70313380a..dd4876623d 100644
--- a/docs/reference/gtk/gtk4-docs.xml
+++ b/docs/reference/gtk/gtk4-docs.xml
@@ -87,6 +87,7 @@
<xi:include href="xml/gtkgridview.xml" />
<xi:include href="xml/gtkcolumnview.xml" />
<xi:include href="xml/gtkcolumnviewcolumn.xml" />
+ <xi:include href="xml/gtkdropdown.xml" />
</chapter>
<chapter id="Trees">
@@ -270,6 +271,7 @@
<xi:include href="xml/gtkpopover.xml" />
<xi:include href="xml/gtkpopovermenu.xml" />
<xi:include href="xml/gtkpopovermenubar.xml" />
+ <xi:include href="xml/gtkdropdown.xml" />
</chapter>
<chapter id="SelectorWidgets">
diff --git a/docs/reference/gtk/gtk4-sections.txt b/docs/reference/gtk/gtk4-sections.txt
index 9ab86b2332..5f8f12e970 100644
--- a/docs/reference/gtk/gtk4-sections.txt
+++ b/docs/reference/gtk/gtk4-sections.txt
@@ -7823,3 +7823,27 @@ gtk_string_filter_set_match_mode
<SUBSECTION Private>
gtk_string_filter_get_type
</SECTION>
+
+<SECTION>
+<FILE>gtkdropdown</FILE>
+<TITLE>GtkDropDown</TITLE>
+GtkDropDown
+gtk_drop_down_new
+gtk_drop_down_set_from_strings
+gtk_drop_down_set_model
+gtk_drop_down_get_model
+gtk_drop_down_set_selected
+gtk_drop_down_get_selected
+gtk_drop_down_set_factory
+gtk_drop_down_get_factory
+gtk_drop_down_set_list_factory
+gtk_drop_down_get_list_factory
+gtk_drop_down_set_expression
+gtk_drop_down_get_expression
+gtk_drop_down_set_enable_search
+gtk_drop_down_get_enable_search
+<SUBSECTION Standard>
+GTK_TYPE_DROP_DOWN
+<SUBSECTION Private>
+gtk_drop_down_get_type
+</SECTION>
diff --git a/docs/reference/gtk/gtk4.types.in b/docs/reference/gtk/gtk4.types.in
index 65b0469c26..4a64ecef46 100644
--- a/docs/reference/gtk/gtk4.types.in
+++ b/docs/reference/gtk/gtk4.types.in
@@ -66,6 +66,7 @@ gtk_custom_filter_get_type
gtk_dialog_get_type
gtk_directory_list_get_type
gtk_drawing_area_get_type
+gtk_drop_down_get_type
gtk_editable_get_type
gtk_entry_buffer_get_type
gtk_entry_completion_get_type
diff --git a/gtk/gtk.h b/gtk/gtk.h
index e606c7f0b5..6a1e8f40fd 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -101,6 +101,7 @@
#include <gtk/gtkdragdest.h>
#include <gtk/gtkdragsource.h>
#include <gtk/gtkdrawingarea.h>
+#include <gtk/gtkdropdown.h>
#include <gtk/gtkeditable.h>
#include <gtk/gtkentry.h>
#include <gtk/gtkentrybuffer.h>
diff --git a/gtk/gtkdropdown.c b/gtk/gtkdropdown.c
new file mode 100644
index 0000000000..8eda582b71
--- /dev/null
+++ b/gtk/gtkdropdown.c
@@ -0,0 +1,1208 @@
+/*
+ * Copyright © 2019 Red Hat, Inc.
+ *
+ * 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: Matthias Clasen <mclasen redhat com>
+ */
+
+#include "config.h"
+
+#include "gtkdropdown.h"
+
+#include "gtkintl.h"
+#include "gtklistview.h"
+#include "gtklistitemfactory.h"
+#include "gtksignallistitemfactory.h"
+#include "gtklistitemwidgetprivate.h"
+#include "gtkpopover.h"
+#include "gtkprivate.h"
+#include "gtksingleselection.h"
+#include "gtkfilterlistmodel.h"
+#include "gtkstringfilter.h"
+#include "gtkmultifilter.h"
+#include "gtkstylecontext.h"
+#include "gtkiconprivate.h"
+#include "gtkwidgetprivate.h"
+#include "gtknative.h"
+#include "gtktogglebutton.h"
+#include "gtkexpression.h"
+#include "gtkstack.h"
+#include "gtksearchentry.h"
+#include "gtklabel.h"
+#include "gtklistitem.h"
+#include "gtkbuildable.h"
+#include "gtkbuilderprivate.h"
+
+/**
+ * SECTION:gtkdropdown
+ * @Title: GtkDropDown
+ * @Short_description: Choose an item from a list
+ * @See_also: #GtkComboBox
+ *
+ * GtkDropDown is a widget that allows the user to choose an item
+ * from a list of options. The GtkDropDown displays the selected
+ * choice.
+ *
+ * The options are given to GtkDropDown in the form of #GListModel,
+ * and how the individual options are represented is determined by
+ * a #GtkListItemFactory. The default factory displays simple strings,
+ * and expects to obtain these from the model by evaluating an expression
+ * that has to be provided via gtk_drop_down_set_expression().
+ *
+ * The convenience method gtk_drop_down_set_from_strings() can be used
+ * to set up a model that is populated from an array of strings and
+ * an expression for obtaining those strings.
+ *
+ * GtkDropDown can optionally allow search in the popup, which is
+ * useful if the list of options is long. To enable the search entry,
+ * use gtk_drop_down_set_enable_search().
+ *
+ * # GtkDropDown as GtkBuildable
+ *
+ * The GtkDropDown implementation of the GtkBuildable interface supports
+ * adding items directly using the <items> element and specifying <item>
+ * elements for each item. Using <items> is equivalent to calling
+ * gtk_drop_down_set_from_strings(). Each <item> element supports
+ * the regular translation attributes “translatable”, “context”
+ * and “comments”.
+ *
+ * Here is a UI definition fragment specifying GtkDropDown items:
+ * |[
+ * <object class="GtkDropDown">
+ * <items>
+ * <item translatable="yes">Factory</item>
+ * <item translatable="yes">Home</item>
+ * <item translatable="yes">Subway</item>
+ * </items>
+ * </object>
+ * ]|
+
+ */
+
+struct _GtkDropDown
+{
+ GtkWidget parent_instance;
+
+ GtkListItemFactory *factory;
+ GtkListItemFactory *list_factory;
+ GListModel *model;
+ GListModel *selection;
+ GListModel *filter_model;
+ GListModel *popup_selection;
+
+ GtkWidget *popup;
+ GtkWidget *button;
+
+ GtkWidget *popup_list;
+ GtkWidget *button_stack;
+ GtkWidget *button_item;
+ GtkWidget *button_placeholder;
+ GtkWidget *search_entry;
+
+ gboolean enable_search;
+ GtkExpression *expression;
+};
+
+struct _GtkDropDownClass
+{
+ GtkDropDownClass parent_class;
+};
+
+enum
+{
+ PROP_0,
+ PROP_FACTORY,
+ PROP_LIST_FACTORY,
+ PROP_MODEL,
+ PROP_SELECTED,
+ PROP_ENABLE_SEARCH,
+ PROP_EXPRESSION,
+
+ N_PROPS
+};
+
+static void gtk_drop_down_buildable_interface_init (GtkBuildableIface *iface);
+
+static GtkBuildableIface *buildable_parent_iface = NULL;
+
+G_DEFINE_TYPE_WITH_CODE (GtkDropDown, gtk_drop_down, GTK_TYPE_WIDGET,
+ G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
+ gtk_drop_down_buildable_interface_init))
+
+static GParamSpec *properties[N_PROPS] = { NULL, };
+
+static void
+button_toggled (GtkWidget *widget,
+ gpointer data)
+{
+ GtkDropDown *self = data;
+
+ if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
+ gtk_popover_popup (GTK_POPOVER (self->popup));
+ else
+ gtk_popover_popdown (GTK_POPOVER (self->popup));
+}
+
+static void
+popover_closed (GtkPopover *popover,
+ gpointer data)
+{
+ GtkDropDown *self = data;
+
+ gtk_editable_set_text (GTK_EDITABLE (self->search_entry), "");
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (self->button), FALSE);
+}
+
+static void
+row_activated (GtkListView *listview,
+ guint position,
+ gpointer data)
+{
+ GtkDropDown *self = data;
+ GtkFilter *filter;
+
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (self->button), FALSE);
+ gtk_popover_popdown (GTK_POPOVER (self->popup));
+
+ /* reset the filter so positions are 1-1 */
+ filter = gtk_filter_list_model_get_filter (GTK_FILTER_LIST_MODEL (self->filter_model));
+ if (GTK_IS_STRING_FILTER (filter))
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), "");
+ gtk_drop_down_set_selected (self, gtk_single_selection_get_selected (GTK_SINGLE_SELECTION
(self->popup_selection)));
+}
+
+static void
+selection_changed (GtkSelectionModel *selection,
+ guint position,
+ guint n_items,
+ gpointer data)
+{
+ GtkDropDown *self = data;
+ guint selected;
+ gpointer item;
+ GtkFilter *filter;
+
+ selected = gtk_single_selection_get_selected (GTK_SINGLE_SELECTION (self->selection));
+ item = gtk_single_selection_get_selected_item (GTK_SINGLE_SELECTION (self->selection));
+
+ if (selected == GTK_INVALID_LIST_POSITION)
+ {
+ gtk_stack_set_visible_child_name (GTK_STACK (self->button_stack), "empty");
+ }
+ else
+ {
+ gtk_stack_set_visible_child_name (GTK_STACK (self->button_stack), "item");
+ gtk_list_item_widget_update (GTK_LIST_ITEM_WIDGET (self->button_item), selected, item, FALSE);
+ }
+
+ /* reset the filter so positions are 1-1 */
+ filter = gtk_filter_list_model_get_filter (GTK_FILTER_LIST_MODEL (self->filter_model));
+ if (GTK_IS_STRING_FILTER (filter))
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), "");
+ gtk_single_selection_set_selected (GTK_SINGLE_SELECTION (self->popup_selection), selected);
+}
+
+static void
+update_filter (GtkDropDown *self)
+{
+ if (self->filter_model)
+ {
+ GtkFilter *filter;
+
+ if (self->expression)
+ {
+ filter = gtk_string_filter_new ();
+ gtk_string_filter_set_match_mode (GTK_STRING_FILTER (filter), GTK_STRING_FILTER_MATCH_MODE_PREFIX);
+ gtk_string_filter_set_expression (GTK_STRING_FILTER (filter), self->expression);
+ }
+ else
+ filter = gtk_every_filter_new ();
+ gtk_filter_list_model_set_filter (GTK_FILTER_LIST_MODEL (self->filter_model), filter);
+ g_object_unref (filter);
+ }
+}
+
+static void
+search_changed (GtkSearchEntry *entry, gpointer data)
+{
+ GtkDropDown *self = data;
+ const char *text;
+ GtkFilter *filter;
+
+ text = gtk_editable_get_text (GTK_EDITABLE (entry));
+
+ filter = gtk_filter_list_model_get_filter (GTK_FILTER_LIST_MODEL (self->filter_model));
+ if (GTK_IS_STRING_FILTER (filter))
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), text);
+}
+
+static void
+search_stop (GtkSearchEntry *entry, gpointer data)
+{
+ GtkDropDown *self = data;
+ GtkFilter *filter;
+
+ filter = gtk_filter_list_model_get_filter (GTK_FILTER_LIST_MODEL (self->filter_model));
+ if (GTK_IS_STRING_FILTER (filter))
+ {
+ if (gtk_string_filter_get_search (GTK_STRING_FILTER (filter)))
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), NULL);
+ else
+ gtk_popover_popdown (GTK_POPOVER (self->popup));
+ }
+}
+
+static void
+gtk_drop_down_dispose (GObject *object)
+{
+ GtkDropDown *self = GTK_DROP_DOWN (object);
+
+ g_clear_pointer (&self->popup, gtk_widget_unparent);
+ g_clear_pointer (&self->button, gtk_widget_unparent);
+
+ g_clear_object (&self->model);
+ if (self->selection)
+ g_signal_handlers_disconnect_by_func (self->selection, selection_changed, self);
+ g_clear_object (&self->filter_model);
+ g_clear_pointer (&self->expression, gtk_expression_unref);
+ g_clear_object (&self->selection);
+ g_clear_object (&self->popup_selection);
+ g_clear_object (&self->factory);
+ g_clear_object (&self->list_factory);
+
+ G_OBJECT_CLASS (gtk_drop_down_parent_class)->dispose (object);
+}
+
+static void
+gtk_drop_down_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkDropDown *self = GTK_DROP_DOWN (object);
+
+ switch (property_id)
+ {
+ case PROP_FACTORY:
+ g_value_set_object (value, self->factory);
+ break;
+
+ case PROP_LIST_FACTORY:
+ g_value_set_object (value, self->list_factory);
+ break;
+
+ case PROP_MODEL:
+ g_value_set_object (value, self->model);
+ break;
+
+ case PROP_SELECTED:
+ g_value_set_uint (value, gtk_drop_down_get_selected (self));
+ break;
+
+ case PROP_ENABLE_SEARCH:
+ g_value_set_boolean (value, self->enable_search);
+ break;
+
+ case PROP_EXPRESSION:
+ g_value_set_boxed (value, self->expression);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_drop_down_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkDropDown *self = GTK_DROP_DOWN (object);
+
+ switch (property_id)
+ {
+ case PROP_FACTORY:
+ gtk_drop_down_set_factory (self, g_value_get_object (value));
+ break;
+
+ case PROP_LIST_FACTORY:
+ gtk_drop_down_set_list_factory (self, g_value_get_object (value));
+ break;
+
+ case PROP_MODEL:
+ gtk_drop_down_set_model (self, g_value_get_object (value));
+ break;
+
+ case PROP_SELECTED:
+ gtk_drop_down_set_selected (self, g_value_get_uint (value));
+ break;
+
+ case PROP_ENABLE_SEARCH:
+ gtk_drop_down_set_enable_search (self, g_value_get_boolean (value));
+ break;
+
+ case PROP_EXPRESSION:
+ gtk_drop_down_set_expression (self, g_value_get_boxed (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_drop_down_measure (GtkWidget *widget,
+ GtkOrientation orientation,
+ int size,
+ int *minimum,
+ int *natural,
+ int *minimum_baseline,
+ int *natural_baseline)
+{
+ GtkDropDown *self = GTK_DROP_DOWN (widget);
+
+ gtk_widget_measure (self->button,
+ orientation,
+ size,
+ minimum, natural,
+ minimum_baseline, natural_baseline);
+}
+
+static void
+gtk_drop_down_size_allocate (GtkWidget *widget,
+ int width,
+ int height,
+ int baseline)
+{
+ GtkDropDown *self = GTK_DROP_DOWN (widget);
+
+ gtk_widget_size_allocate (self->button, &(GtkAllocation) { 0, 0, width, height }, baseline);
+
+ gtk_native_check_resize (GTK_NATIVE (self->popup));
+}
+
+
+static void
+gtk_drop_down_class_init (GtkDropDownClass *klass)
+{
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ gobject_class->dispose = gtk_drop_down_dispose;
+ gobject_class->get_property = gtk_drop_down_get_property;
+ gobject_class->set_property = gtk_drop_down_set_property;
+
+ widget_class->measure = gtk_drop_down_measure;
+ widget_class->size_allocate = gtk_drop_down_size_allocate;
+
+ /**
+ * GtkDropDown:factory:
+ *
+ * Factory for populating list items.
+ */
+ properties[PROP_FACTORY] =
+ g_param_spec_object ("factory",
+ P_("Factory"),
+ P_("Factory for populating list item"),
+ GTK_TYPE_LIST_ITEM_FACTORY,
+ G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+ /**
+ * GtkDropDown:list-factory:
+ *
+ * The factory for populating list items in the popup.
+ *
+ * If this is not set, #GtkDropDown:factory is used.
+ */
+ properties[PROP_LIST_FACTORY] =
+ g_param_spec_object ("list-factory",
+ P_("List Factory"),
+ P_("Factory for populating list items"),
+ GTK_TYPE_LIST_ITEM_FACTORY,
+ G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+ /**
+ * GtkDropDown: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);
+
+ /**
+ * GtkDropDown:selected:
+ *
+ * The position of the selected item in #GtkDropDown:model,
+ * or #GTK_INVALID_LIST_POSITION if no item is selected.
+ */
+ properties[PROP_SELECTED] =
+ g_param_spec_uint ("selected",
+ P_("Selected"),
+ P_("Position of the selected item"),
+ 0, G_MAXUINT, GTK_INVALID_LIST_POSITION,
+ G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+ /**
+ * GtkDropDown:enable-search:
+ *
+ * Whether to show a search entry in the popup.
+ *
+ * Note that search requires #GtkDropDown:expression to be set.
+ */
+ properties[PROP_ENABLE_SEARCH] =
+ g_param_spec_boolean ("enable-search",
+ P_("Enable search"),
+ P_("Whether to show a search entry in the popup"),
+ FALSE,
+ G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+ /**
+ * GtkDtropDown:expression:
+ *
+ * An expression to evaluate to obtain strings to match against the search
+ * term (see #GtkDropDown:enable-search). If #GtkDropDown:factory is not set,
+ * the expression is also used to bind strings to labels produced by a
+ * default factory.
+ */
+ properties[PROP_EXPRESSION] =
+ g_param_spec_boxed ("expression",
+ P_("Expression"),
+ P_("Expression to determine strings to search for"),
+ GTK_TYPE_EXPRESSION,
+ G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_properties (gobject_class, N_PROPS, properties);
+
+ gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkdropdown.ui");
+ gtk_widget_class_bind_template_child (widget_class, GtkDropDown, button);
+ gtk_widget_class_bind_template_child (widget_class, GtkDropDown, button_stack);
+ gtk_widget_class_bind_template_child (widget_class, GtkDropDown, button_item);
+ gtk_widget_class_bind_template_child (widget_class, GtkDropDown, popup);
+ gtk_widget_class_bind_template_child (widget_class, GtkDropDown, popup_list);
+ gtk_widget_class_bind_template_child (widget_class, GtkDropDown, search_entry);
+
+ gtk_widget_class_bind_template_callback (widget_class, row_activated);
+ gtk_widget_class_bind_template_callback (widget_class, button_toggled);
+ gtk_widget_class_bind_template_callback (widget_class, popover_closed);
+ gtk_widget_class_bind_template_callback (widget_class, search_changed);
+ gtk_widget_class_bind_template_callback (widget_class, search_stop);
+
+ gtk_widget_class_set_css_name (widget_class, I_("combobox"));
+}
+
+static void
+setup_item (GtkSignalListItemFactory *factory,
+ GtkListItem *list_item,
+ gpointer data)
+{
+ GtkWidget *label;
+
+ label = gtk_label_new (NULL);
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_list_item_set_child (list_item, label);
+}
+
+static void
+bind_item (GtkSignalListItemFactory *factory,
+ GtkListItem *list_item,
+ gpointer data)
+{
+ GtkDropDown *self = data;
+ gpointer item;
+ GtkWidget *label;
+ GValue value = G_VALUE_INIT;
+
+ if (self->expression == NULL)
+ {
+ g_critical ("Either GtkDropDown::factory or GtkDropDown::expression must be set");
+ return;
+ }
+
+ item = gtk_list_item_get_item (list_item);
+ label = gtk_list_item_get_child (list_item);
+
+ if (gtk_expression_evaluate (self->expression, item, &value))
+ {
+ gtk_label_set_label (GTK_LABEL (label), g_value_get_string (&value));
+ g_value_unset (&value);
+ }
+}
+
+static void
+set_default_factory (GtkDropDown *self)
+{
+ GtkListItemFactory *factory;
+
+ factory = gtk_signal_list_item_factory_new ();
+
+ g_signal_connect (factory, "setup", G_CALLBACK (setup_item), self);
+ g_signal_connect (factory, "bind", G_CALLBACK (bind_item), self);
+
+ gtk_drop_down_set_factory (self, factory);
+
+ g_object_unref (factory);
+}
+
+static void
+gtk_drop_down_init (GtkDropDown *self)
+{
+ g_type_ensure (GTK_TYPE_ICON);
+ g_type_ensure (GTK_TYPE_LIST_ITEM_WIDGET);
+
+ gtk_widget_init_template (GTK_WIDGET (self));
+
+ set_default_factory (self);
+}
+
+/**
+ * gtk_drop_down_new:
+ *
+ * Creates a new empty #GtkDropDown.
+ *
+ * You most likely want to call gtk_drop_down_set_factory() to
+ * set up a way to map its items to widgets and gtk_drop_down_set_model()
+ * to set a model to provide items next.
+ *
+ * Returns: a new #GtkDropDown
+ **/
+GtkWidget *
+gtk_drop_down_new (void)
+{
+ return g_object_new (GTK_TYPE_DROP_DOWN, NULL);
+}
+
+/**
+ * gtk_drop_down_get_model:
+ * @self: a #GtkDropDown
+ *
+ * Gets the model that's currently used to read the items displayed.
+ *
+ * Returns: (nullable) (transfer none): The model in use
+ **/
+GListModel *
+gtk_drop_down_get_model (GtkDropDown *self)
+{
+ g_return_val_if_fail (GTK_IS_DROP_DOWN (self), NULL);
+
+ return self->model;
+}
+
+/**
+ * gtk_drop_down_set_model:
+ * @self: a #GtkDropDown
+ * @model: (allow-none) (transfer none): the model to use or %NULL for none
+ *
+ * Sets the #GListModel to use.
+ *
+ * If @model is a #GtkSingleSelection, then its selection will be updated to
+ * reflect the value of #GtkDropDown:selected.
+ */
+void
+gtk_drop_down_set_model (GtkDropDown *self,
+ GListModel *model)
+{
+ g_return_if_fail (GTK_IS_DROP_DOWN (self));
+ g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));
+
+ if (!g_set_object (&self->model, model))
+ return;
+
+ if (model == NULL)
+ {
+ gtk_list_view_set_model (GTK_LIST_VIEW (self->popup_list), NULL);
+
+ if (self->selection)
+ g_signal_handlers_disconnect_by_func (self->selection, selection_changed, self);
+
+ g_clear_object (&self->selection);
+ g_clear_object (&self->filter_model);
+ g_clear_object (&self->popup_selection);
+ }
+ else
+ {
+ GListModel *filter_model;
+ GListModel *selection;
+
+ filter_model = G_LIST_MODEL (gtk_filter_list_model_new (model, NULL));
+ g_set_object (&self->filter_model, filter_model);
+ g_object_unref (filter_model);
+
+ update_filter (self);
+
+ selection = G_LIST_MODEL (gtk_single_selection_new (filter_model));
+ g_set_object (&self->popup_selection, selection);
+ gtk_list_view_set_model (GTK_LIST_VIEW (self->popup_list), selection);
+ g_object_unref (selection);
+
+ if (GTK_IS_SINGLE_SELECTION (model))
+ selection = g_object_ref (model);
+ else
+ selection = G_LIST_MODEL (gtk_single_selection_new (model));
+ g_set_object (&self->selection, selection);
+ g_object_unref (selection);
+
+ g_signal_connect (self->selection, "selection-changed", G_CALLBACK (selection_changed), self);
+ selection_changed (GTK_SELECTION_MODEL (self->selection), 0, 0, self);
+ }
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MODEL]);
+}
+
+/**
+ * gtk_drop_down_get_factory:
+ * @self: a #GtkDropDown
+ *
+ * Gets the factory that's currently used to populate list items.
+ *
+ * The factory returned by this function is always used for the item
+ * in the button. It is also used for items in the popup if #GtkDropDown:list-factory
+ * is not unset.
+ *
+ * Returns: (nullable) (transfer none): The factory in use
+ **/
+GtkListItemFactory *
+gtk_drop_down_get_factory (GtkDropDown *self)
+{
+ g_return_val_if_fail (GTK_IS_DROP_DOWN (self), NULL);
+
+ return self->factory;
+}
+
+/**
+ * gtk_drop_down_set_factory:
+ * @self: a #GtkDropDown
+ * @factory: (allow-none) (transfer none): the factory to use or %NULL for none
+ *
+ * Sets the #GtkListItemFactory to use for populating list items.
+ **/
+void
+gtk_drop_down_set_factory (GtkDropDown *self,
+ GtkListItemFactory *factory)
+{
+ g_return_if_fail (GTK_IS_DROP_DOWN (self));
+ g_return_if_fail (factory == NULL || GTK_LIST_ITEM_FACTORY (factory));
+
+ if (!g_set_object (&self->factory, factory))
+ return;
+
+ gtk_list_item_widget_set_factory (GTK_LIST_ITEM_WIDGET (self->button_item), factory);
+ if (self->list_factory == NULL)
+ gtk_list_view_set_factory (GTK_LIST_VIEW (self->popup_list), factory);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_FACTORY]);
+}
+
+/**
+ * gtk_drop_down_get_list_factory:
+ * @self: a #GtkDropDown
+ *
+ * Gets the factory that's currently used to populate list items in the popup.
+ *
+ * Returns: (nullable) (transfer none): The factory in use
+ **/
+GtkListItemFactory *
+gtk_drop_down_get_list_factory (GtkDropDown *self)
+{
+ g_return_val_if_fail (GTK_IS_DROP_DOWN (self), NULL);
+
+ return self->list_factory;
+}
+
+/**
+ * gtk_drop_down_set_list_factory:
+ * @self: a #GtkDropDown
+ * @factory: (allow-none) (transfer none): the factory to use or %NULL for none
+ *
+ * Sets the #GtkListItemFactory to use for populating list items in the popup.
+ **/
+void
+gtk_drop_down_set_list_factory (GtkDropDown *self,
+ GtkListItemFactory *factory)
+{
+ g_return_if_fail (GTK_IS_DROP_DOWN (self));
+ g_return_if_fail (factory == NULL || GTK_LIST_ITEM_FACTORY (factory));
+
+ if (!g_set_object (&self->list_factory, factory))
+ return;
+
+ if (self->list_factory != NULL)
+ gtk_list_view_set_factory (GTK_LIST_VIEW (self->popup_list), self->list_factory);
+ else
+ gtk_list_view_set_factory (GTK_LIST_VIEW (self->popup_list), self->factory);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_LIST_FACTORY]);
+}
+
+/**
+ * gtk_drop_down_set_selected:
+ * @self: a #GtkDropDown
+ * @selected: the position of the item to select, or #GTK_INVALID_LIST_POSITION
+ *
+ * Selects the item at the given position.
+ **/
+void
+gtk_drop_down_set_selected (GtkDropDown *self,
+ guint position)
+{
+ g_return_if_fail (GTK_IS_DROP_DOWN (self));
+
+ if (self->selection == NULL)
+ return;
+
+ if (gtk_single_selection_get_selected (GTK_SINGLE_SELECTION (self->selection)) == position)
+ return;
+
+ gtk_single_selection_set_selected (GTK_SINGLE_SELECTION (self->selection), position);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SELECTED]);
+}
+
+/**
+ * gtk_drop_down_get_selected:
+ * @self: a #GtkDropDown
+ *
+ * Gets the position of the selected item.
+ *
+ * Returns: the position of the selected item, or #GTK_INVALID_LIST_POSITION
+ * if not item is selected
+ **/
+guint
+gtk_drop_down_get_selected (GtkDropDown *self)
+{
+ g_return_val_if_fail (GTK_IS_DROP_DOWN (self), GTK_INVALID_LIST_POSITION);
+
+ if (self->selection == NULL)
+ return GTK_INVALID_LIST_POSITION;
+
+ return gtk_single_selection_get_selected (GTK_SINGLE_SELECTION (self->selection));
+}
+
+/**
+ * gtk_drop_down_set_enable_search:
+ * @self: a #GtkDropDown
+ * @enable_search: whether to enable search
+ *
+ * Sets whether a search entry will be shown in the popup that
+ * allows to search for items in the list.
+ *
+ * Note that #GtkDropDown:expression must be set for search to work.
+ **/
+void
+gtk_drop_down_set_enable_search (GtkDropDown *self,
+ gboolean enable_search)
+{
+ g_return_if_fail (GTK_IS_DROP_DOWN (self));
+
+ if (self->enable_search == enable_search)
+ return;
+
+ self->enable_search = enable_search;
+
+ gtk_editable_set_text (GTK_EDITABLE (self->search_entry), "");
+ gtk_widget_set_visible (self->search_entry, enable_search);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ENABLE_SEARCH]);
+}
+
+/**
+ * gtk_drop_down_get_enable_search:
+ *
+ * Returns whether search is enabled.
+ *
+ * Returns: %TRUE if the popup includes a search entry
+ **/
+gboolean
+gtk_drop_down_get_enable_search (GtkDropDown *self)
+{
+ g_return_val_if_fail (GTK_IS_DROP_DOWN (self), FALSE);
+
+ return self->enable_search;
+}
+
+/**
+ * gtk_drop_down_set_expression:
+ * @self: a #GtkDropDown
+ * @expression: (nullable): a #GtkExpression, or %NULL
+ *
+ * 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.
+ */
+void
+gtk_drop_down_set_expression (GtkDropDown *self,
+ GtkExpression *expression)
+{
+ g_return_if_fail (GTK_IS_DROP_DOWN (self));
+ g_return_if_fail (expression == NULL || gtk_expression_get_value_type (expression) == G_TYPE_STRING);
+
+ if (self->expression == expression)
+ return;
+
+ if (self->expression)
+ gtk_expression_unref (self->expression);
+ self->expression = expression;
+ if (self->expression)
+ gtk_expression_ref (self->expression);
+
+ update_filter (self);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_EXPRESSION]);
+}
+
+/**
+ * gtk_drop_down_get_expression:
+ * @self: a #GtkDropDown
+ *
+ * Gets the expression set with gtk_drop_down_set_expression().
+ *
+ * Returns: (nullable) (transfer none): a #GtkExpression or %NULL
+ */
+GtkExpression *
+gtk_drop_down_get_expression (GtkDropDown *self)
+{
+ g_return_val_if_fail (GTK_IS_DROP_DOWN (self), NULL);
+
+ return self->expression;
+}
+
+
+#define GTK_TYPE_DROP_DOWN_STRING_HOLDER (gtk_drop_down_string_holder_get_type ())
+G_DECLARE_FINAL_TYPE (GtkDropDownStringHolder, gtk_drop_down_string_holder, GTK, DROP_DOWN_STRING_HOLDER,
GObject)
+
+struct _GtkDropDownStringHolder {
+ GObject parent_instance;
+ char *string;
+};
+
+enum {
+ PROP_STRING = 1,
+ PROP_NUM_PROPERTIES
+};
+
+G_DEFINE_TYPE (GtkDropDownStringHolder, gtk_drop_down_string_holder, G_TYPE_OBJECT);
+
+static void
+gtk_drop_down_string_holder_init (GtkDropDownStringHolder *holder)
+{
+}
+
+static void
+gtk_drop_down_string_holder_finalize (GObject *object)
+{
+ GtkDropDownStringHolder *holder = GTK_DROP_DOWN_STRING_HOLDER (object);
+
+ g_free (holder->string);
+
+ G_OBJECT_CLASS (gtk_drop_down_string_holder_parent_class)->finalize (object);
+}
+
+static void
+gtk_drop_down_string_holder_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkDropDownStringHolder *holder = GTK_DROP_DOWN_STRING_HOLDER (object);
+
+ switch (property_id)
+ {
+ case PROP_STRING:
+ g_free (holder->string);
+ holder->string = g_value_dup_string (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_drop_down_string_holder_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkDropDownStringHolder *holder = GTK_DROP_DOWN_STRING_HOLDER (object);
+
+ switch (property_id)
+ {
+ case PROP_STRING:
+ g_value_set_string (value, holder->string);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_drop_down_string_holder_class_init (GtkDropDownStringHolderClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+ GParamSpec *pspec;
+
+ object_class->finalize = gtk_drop_down_string_holder_finalize;
+ object_class->set_property = gtk_drop_down_string_holder_set_property;
+ object_class->get_property = gtk_drop_down_string_holder_get_property;
+
+ pspec = g_param_spec_string ("string", "String", "String",
+ NULL,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_property (object_class, PROP_STRING, pspec);
+
+}
+
+static GtkDropDownStringHolder *
+gtk_drop_down_string_holder_new (const char *string)
+{
+ return g_object_new (GTK_TYPE_DROP_DOWN_STRING_HOLDER, "string", string, NULL);
+}
+
+static GListModel *
+gtk_drop_down_strings_model_new (const char *const *text)
+{
+ GListStore *store;
+ int i;
+
+ store = g_list_store_new (GTK_TYPE_DROP_DOWN_STRING_HOLDER);
+ for (i = 0; text[i]; i++)
+ {
+ GtkDropDownStringHolder *holder = gtk_drop_down_string_holder_new (text[i]);
+ g_list_store_append (store, holder);
+ g_object_unref (holder);
+ }
+ return G_LIST_MODEL (store);
+}
+
+/**
+ * gtk_drop_down_set_from_strings:
+ * @self: a #GTkDropDown
+ * text: a %NULL-terminated string array
+ *
+ * Populates @self with the strings in @text,
+ * by creating a suitable model and factory.
+ */
+void
+gtk_drop_down_set_from_strings (GtkDropDown *self,
+ const char *const *text)
+{
+ GtkExpression *expression;
+ GListModel *model;
+
+ g_return_if_fail (GTK_IS_DROP_DOWN (self));
+ g_return_if_fail (text != NULL);
+
+ set_default_factory (self);
+
+ expression = gtk_property_expression_new (GTK_TYPE_DROP_DOWN_STRING_HOLDER, NULL, "string");
+ gtk_drop_down_set_expression (self, expression);
+ gtk_expression_unref (expression);
+
+ model = gtk_drop_down_strings_model_new (text);
+ gtk_drop_down_set_model (self, model);
+ g_object_unref (model);
+}
+
+typedef struct {
+ GtkBuilder *builder;
+ GObject *object;
+ const gchar *domain;
+
+ gchar *context;
+ guint translatable : 1;
+ guint is_text : 1;
+
+ GString *string;
+ GPtrArray *strings;
+} ItemParserData;
+
+static void
+item_start_element (GtkBuildableParseContext *context,
+ const gchar *element_name,
+ const gchar **names,
+ const gchar **values,
+ gpointer user_data,
+ GError **error)
+{
+ ItemParserData *data = (ItemParserData*)user_data;
+
+ if (strcmp (element_name, "items") == 0)
+ {
+ if (!_gtk_builder_check_parent (data->builder, context, "object", error))
+ return;
+
+ if (!g_markup_collect_attributes (element_name, names, values, error,
+ G_MARKUP_COLLECT_INVALID, NULL, NULL,
+ G_MARKUP_COLLECT_INVALID))
+ _gtk_builder_prefix_error (data->builder, context, error);
+ }
+ else if (strcmp (element_name, "item") == 0)
+ {
+ gboolean translatable = FALSE;
+ const gchar *msg_context = NULL;
+
+ if (!_gtk_builder_check_parent (data->builder, context, "items", error))
+ return;
+
+ if (!g_markup_collect_attributes (element_name, names, values, error,
+ G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "translatable",
&translatable,
+ G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "comments", NULL,
+ G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "context",
&msg_context,
+ G_MARKUP_COLLECT_INVALID))
+ {
+ _gtk_builder_prefix_error (data->builder, context, error);
+ return;
+ }
+
+ data->is_text = TRUE;
+ data->translatable = translatable;
+ data->context = g_strdup (msg_context);
+ }
+ else
+ {
+ _gtk_builder_error_unhandled_tag (data->builder, context,
+ "GtkDropDown", element_name,
+ error);
+ }
+}
+
+static void
+item_text (GtkBuildableParseContext *context,
+ const gchar *text,
+ gsize text_len,
+ gpointer user_data,
+ GError **error)
+{
+ ItemParserData *data = (ItemParserData*)user_data;
+
+ if (data->is_text)
+ g_string_append_len (data->string, text, text_len);
+}
+
+static void
+item_end_element (GtkBuildableParseContext *context,
+ const gchar *element_name,
+ gpointer user_data,
+ GError **error)
+{
+ ItemParserData *data = (ItemParserData*)user_data;
+
+ /* Append the translated strings */
+ if (data->string->len)
+ {
+ if (data->translatable)
+ {
+ const gchar *translated;
+
+ translated = _gtk_builder_parser_translate (data->domain,
+ data->context,
+ data->string->str);
+ g_string_assign (data->string, translated);
+ }
+
+ g_ptr_array_add (data->strings, g_strdup (data->string->str));
+ }
+
+ data->translatable = FALSE;
+ g_string_set_size (data->string, 0);
+ g_clear_pointer (&data->context, g_free);
+ data->is_text = FALSE;
+}
+
+static const GtkBuildableParser item_parser =
+{
+ item_start_element,
+ item_end_element,
+ item_text
+};
+
+static gboolean
+gtk_drop_down_buildable_custom_tag_start (GtkBuildable *buildable,
+ GtkBuilder *builder,
+ GObject *child,
+ const gchar *tagname,
+ GtkBuildableParser *parser,
+ gpointer *parser_data)
+{
+ if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
+ tagname, parser, parser_data))
+ return TRUE;
+
+ if (strcmp (tagname, "items") == 0)
+ {
+ ItemParserData *data;
+
+ data = g_slice_new0 (ItemParserData);
+ data->builder = g_object_ref (builder);
+ data->object = g_object_ref (G_OBJECT (buildable));
+ data->domain = gtk_builder_get_translation_domain (builder);
+ data->string = g_string_new ("");
+ data->strings = g_ptr_array_new_with_free_func (g_free);
+
+ *parser = item_parser;
+ *parser_data = data;
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static void
+gtk_drop_down_buildable_custom_finished (GtkBuildable *buildable,
+ GtkBuilder *builder,
+ GObject *child,
+ const gchar *tagname,
+ gpointer user_data)
+{
+ ItemParserData *data;
+
+ buildable_parent_iface->custom_finished (buildable, builder, child,
+ tagname, user_data);
+
+ if (strcmp (tagname, "items") == 0)
+ {
+ data = (ItemParserData*)user_data;
+
+ g_ptr_array_add (data->strings, NULL);
+
+ gtk_drop_down_set_from_strings (GTK_DROP_DOWN (data->object), (const char **)data->strings->pdata);
+
+ g_object_unref (data->object);
+ g_object_unref (data->builder);
+ g_string_free (data->string, TRUE);
+ g_ptr_array_unref (data->strings);
+ g_slice_free (ItemParserData, data);
+ }
+}
+
+
+static void
+gtk_drop_down_buildable_interface_init (GtkBuildableIface *iface)
+{
+ buildable_parent_iface = g_type_interface_peek_parent (iface);
+
+ iface->custom_tag_start = gtk_drop_down_buildable_custom_tag_start;
+ iface->custom_finished = gtk_drop_down_buildable_custom_finished;
+}
diff --git a/gtk/gtkdropdown.h b/gtk/gtkdropdown.h
new file mode 100644
index 0000000000..84813b3877
--- /dev/null
+++ b/gtk/gtkdropdown.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright © 2018 Red Hat, Inc.
+ *
+ * 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: Matthias Clasen
+ */
+
+#ifndef __GTK_DROP_DOWN_H__
+#define __GTK_DROP_DOWN_H__
+
+#include <gtk/gtkwidget.h>
+#include <gtk/gtkexpression.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_DROP_DOWN (gtk_drop_down_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (GtkDropDown, gtk_drop_down, GTK, DROP_DOWN, GtkWidget)
+
+GDK_AVAILABLE_IN_ALL
+GtkWidget * gtk_drop_down_new (void);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_drop_down_set_from_strings (GtkDropDown *self,
+ const char *const *texts);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_drop_down_set_model (GtkDropDown *self,
+ GListModel *model);
+GDK_AVAILABLE_IN_ALL
+GListModel * gtk_drop_down_get_model (GtkDropDown *self);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_drop_down_set_selected (GtkDropDown *self,
+ guint position);
+GDK_AVAILABLE_IN_ALL
+guint gtk_drop_down_get_selected (GtkDropDown *self);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_drop_down_set_factory (GtkDropDown *self,
+ GtkListItemFactory *factory);
+GDK_AVAILABLE_IN_ALL
+GtkListItemFactory *
+ gtk_drop_down_get_factory (GtkDropDown *self);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_drop_down_set_list_factory (GtkDropDown *self,
+ GtkListItemFactory *factory);
+GDK_AVAILABLE_IN_ALL
+GtkListItemFactory *
+ gtk_drop_down_get_list_factory (GtkDropDown *self);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_drop_down_set_expression (GtkDropDown *self,
+ GtkExpression *expression);
+GDK_AVAILABLE_IN_ALL
+GtkExpression * gtk_drop_down_get_expression (GtkDropDown *self);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_drop_down_set_enable_search (GtkDropDown *self,
+ gboolean enable_search);
+GDK_AVAILABLE_IN_ALL
+gboolean gtk_drop_down_get_enable_search (GtkDropDown *self);
+
+G_END_DECLS
+
+#endif /* __GTK_DROP_DOWN_H__ */
diff --git a/gtk/meson.build b/gtk/meson.build
index e41030ad5f..034392be20 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -230,6 +230,7 @@ gtk_public_sources = files([
'gtkdragdest.c',
'gtkdragsource.c',
'gtkdrawingarea.c',
+ 'gtkdropdown.c',
'gtkeditable.c',
'gtkemojichooser.c',
'gtkemojicompletion.c',
@@ -523,6 +524,7 @@ gtk_public_headers = files([
'gtkdragdest.h',
'gtkdragsource.h',
'gtkdrawingarea.h',
+ 'gtkdropdown.h',
'gtkeditable.h',
'gtkentry.h',
'gtkentrybuffer.h',
diff --git a/gtk/ui/gtkdropdown.ui b/gtk/ui/gtkdropdown.ui
new file mode 100644
index 0000000000..b9a1c9c38a
--- /dev/null
+++ b/gtk/ui/gtkdropdown.ui
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface domain="gtk40">
+ <template class="GtkDropDown" parent="GtkWidget">
+ <child>
+ <object class="GtkToggleButton" id="button">
+ <signal name="toggled" handler="button_toggled"/>
+ <child>
+ <object class="GtkBox">
+ <child>
+ <object class="GtkStack" id="button_stack">
+ <property name="halign">fill</property>
+ <property name="hexpand">1</property>
+ <child>
+ <object class="GtkStackPage">
+ <property name="name">empty</property>
+ <property name="child">
+ <object class="GtkLabel">
+ <property name="label" translatable="yes">(None)</property>
+ <property name="xalign">0</property>
+ </object>
+ </property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkStackPage">
+ <property name="name">item</property>
+ <property name="child">
+ <object class="GtkListItemWidget" id="button_item"/>
+ </property>
+ </object>
+ </child>
+ </object>
+ </child>
+ <child>
+ <object class="GtkIcon">
+ <property name="css-name">arrow</property>
+ </object>
+ </child>
+ </object>
+ </child>
+ </object>
+ </child>
+ </template>
+ <object class="GtkPopover" id="popup">
+ <signal name="closed" handler="popover_closed"/>
+ <property name="relative-to">GtkDropDown</property>
+ <property name="has-arrow">0</property>
+ <child>
+ <object class="GtkBox">
+ <property name="orientation">vertical</property>
+ <child>
+ <object class="GtkSearchEntry" id="search_entry">
+ <signal name="search-changed" handler="search_changed"/>
+ <property name="visible">0</property>
+ <property name="placeholder-text" translatable="yes">Search…</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkScrolledWindow">
+ <property name="hscrollbar-policy">never</property>
+ <property name="vscrollbar-policy">automatic</property>
+ <property name="max-content-height">400</property>
+ <property name="propagate-natural-height">1</property>
+ <child>
+ <object class="GtkListView" id="popup_list">
+ <signal name="activate" handler="row_activated"/>
+ <property name="single-click-activate">1</property>
+ </object>
+ </child>
+ </object>
+ </child>
+ </object>
+ </child>
+ </object>
+</interface>
diff --git a/tests/meson.build b/tests/meson.build
index 2be5d96dae..479ae8db9b 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,5 +1,6 @@
gtk_tests = [
# testname, optional extra sources
+ ['testdropdown'],
['rendernode'],
['rendernode-create-tests'],
['overlayscroll'],
diff --git a/tests/testdropdown.c b/tests/testdropdown.c
new file mode 100644
index 0000000000..9fadfddc19
--- /dev/null
+++ b/tests/testdropdown.c
@@ -0,0 +1,305 @@
+/* simple.c
+ * Copyright (C) 2017 Red Hat, Inc
+ * Author: Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <gtk/gtk.h>
+
+
+#define STRING_TYPE_HOLDER (string_holder_get_type ())
+G_DECLARE_FINAL_TYPE (StringHolder, string_holder, STRING, HOLDER, GObject)
+
+struct _StringHolder {
+ GObject parent_instance;
+ char *title;
+ char *icon;
+ char *description;
+};
+
+G_DEFINE_TYPE (StringHolder, string_holder, G_TYPE_OBJECT);
+
+static void
+string_holder_init (StringHolder *holder)
+{
+}
+
+static void
+string_holder_finalize (GObject *object)
+{
+ StringHolder *holder = STRING_HOLDER (object);
+
+ g_free (holder->title);
+ g_free (holder->icon);
+ g_free (holder->description);
+
+ G_OBJECT_CLASS (string_holder_parent_class)->finalize (object);
+}
+
+static void
+string_holder_class_init (StringHolderClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+ object_class->finalize = string_holder_finalize;
+}
+
+static StringHolder *
+string_holder_new (const char *title, const char *icon, const char *description)
+{
+ StringHolder *holder = g_object_new (STRING_TYPE_HOLDER, NULL);
+ holder->title = g_strdup (title);
+ holder->icon = g_strdup (icon);
+ holder->description = g_strdup (description);
+ return holder;
+}
+
+static void
+strings_setup_item_single_line (GtkSignalListItemFactory *factory,
+ GtkListItem *item)
+{
+ GtkWidget *box, *image, *title;
+
+ box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
+
+ image = gtk_image_new ();
+ title = gtk_label_new ("");
+ gtk_label_set_xalign (GTK_LABEL (title), 0.0);
+
+ gtk_container_add (GTK_CONTAINER (box), image);
+ gtk_container_add (GTK_CONTAINER (box), title);
+
+ g_object_set_data (G_OBJECT (item), "title", title);
+ g_object_set_data (G_OBJECT (item), "image", image);
+
+ gtk_list_item_set_child (item, box);
+}
+
+static void
+strings_setup_item_full (GtkSignalListItemFactory *factory,
+ GtkListItem *item)
+{
+ GtkWidget *box, *box2, *image, *title, *description;
+
+ image = gtk_image_new ();
+ title = gtk_label_new ("");
+ gtk_label_set_xalign (GTK_LABEL (title), 0.0);
+ description = gtk_label_new ("");
+ gtk_label_set_xalign (GTK_LABEL (description), 0.0);
+ gtk_style_context_add_class (gtk_widget_get_style_context (description), "dim-label");
+
+ box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
+ box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+
+ gtk_container_add (GTK_CONTAINER (box), image);
+ gtk_container_add (GTK_CONTAINER (box), box2);
+ gtk_container_add (GTK_CONTAINER (box2), title);
+ gtk_container_add (GTK_CONTAINER (box2), description);
+
+ g_object_set_data (G_OBJECT (item), "title", title);
+ g_object_set_data (G_OBJECT (item), "image", image);
+ g_object_set_data (G_OBJECT (item), "description", description);
+
+ gtk_list_item_set_child (item, box);
+}
+
+static void
+strings_bind_item (GtkSignalListItemFactory *factory,
+ GtkListItem *item)
+{
+ GtkWidget *image, *title, *description;
+ StringHolder *holder;
+
+ holder = gtk_list_item_get_item (item);
+
+ title = g_object_get_data (G_OBJECT (item), "title");
+ image = g_object_get_data (G_OBJECT (item), "image");
+ description = g_object_get_data (G_OBJECT (item), "description");
+
+ gtk_label_set_label (GTK_LABEL (title), holder->title);
+ if (image)
+ {
+ gtk_image_set_from_icon_name (GTK_IMAGE (image), holder->icon);
+ gtk_widget_set_visible (image, holder->icon != NULL);
+ }
+ if (description)
+ {
+ gtk_label_set_label (GTK_LABEL (description), holder->description);
+ gtk_widget_set_visible (description , holder->description != NULL);
+ }
+}
+
+static GtkListItemFactory *
+strings_factory_new (gboolean full)
+{
+ GtkListItemFactory *factory;
+
+ factory = gtk_signal_list_item_factory_new ();
+ if (full)
+ g_signal_connect (factory, "setup", G_CALLBACK (strings_setup_item_full), NULL);
+ else
+ g_signal_connect (factory, "setup", G_CALLBACK (strings_setup_item_single_line), NULL);
+ g_signal_connect (factory, "bind", G_CALLBACK (strings_bind_item), NULL);
+
+ return factory;
+}
+
+static GListModel *
+strings_model_new (const char *const *titles,
+ const char *const *icons,
+ const char *const *descriptions)
+{
+ GListStore *store;
+ int i;
+
+ store = g_list_store_new (STRING_TYPE_HOLDER);
+ for (i = 0; titles[i]; i++)
+ {
+ StringHolder *holder = string_holder_new (titles[i],
+ icons ? icons[i] : NULL,
+ descriptions ? descriptions[i] : NULL);
+ g_list_store_append (store, holder);
+ g_object_unref (holder);
+ }
+
+ return G_LIST_MODEL (store);
+}
+
+GtkWidget *
+drop_down_new_from_strings (const char *const *titles,
+ const char *const *icons,
+ const char *const *descriptions)
+{
+ GtkWidget *widget;
+ GListModel *model;
+ GtkListItemFactory *factory;
+ GtkListItemFactory *list_factory;
+
+ g_return_val_if_fail (titles != NULL, NULL);
+ g_return_val_if_fail (icons == NULL || g_strv_length ((char **)icons) == g_strv_length ((char **)titles),
NULL);
+ g_return_val_if_fail (descriptions == NULL || g_strv_length ((char **)icons) == g_strv_length ((char
**)descriptions), NULL);
+
+ model = strings_model_new (titles, icons, descriptions);
+ factory = strings_factory_new (FALSE);
+ if (icons != NULL || descriptions != NULL)
+ list_factory = strings_factory_new (TRUE);
+ else
+ list_factory = NULL;
+
+ widget = g_object_new (GTK_TYPE_DROP_DOWN,
+ "model", model,
+ "factory", factory,
+ "list-factory", list_factory,
+ NULL);
+
+ g_object_unref (model);
+ g_object_unref (factory);
+ if (list_factory)
+ g_object_unref (list_factory);
+
+ return widget;
+}
+
+static char *
+get_family_name (gpointer item)
+{
+ return g_strdup (pango_font_family_get_name (PANGO_FONT_FAMILY (item)));
+}
+
+static char *
+get_title (gpointer item)
+{
+ return g_strdup (STRING_HOLDER (item)->title);
+}
+
+int
+main (int argc, char *argv[])
+{
+ GtkWidget *window, *button, *box, *spin, *check;
+ GListModel *model;
+ GtkExpression *expression;
+ const char * const times[] = { "1 minute", "2 minutes", "5 minutes", "20 minutes", NULL };
+ const char * const many_times[] = {
+ "1 minute", "2 minutes", "5 minutes", "10 minutes", "15 minutes", "20 minutes",
+ "25 minutes", "30 minutes", "35 minutes", "40 minutes", "45 minutes", "50 minutes",
+ "55 minutes", "1 hour", "2 hours", "3 hours", "5 hours", "6 hours", "7 hours",
+ "8 hours", "9 hours", "10 hours", "11 hours", "12 hours", NULL
+ };
+ const char * const device_titles[] = { "Digital Output", "Headphones", "Digital Output", "Analog Output",
NULL };
+ const char * const device_icons[] = { "audio-card-symbolic", "audio-headphones-symbolic",
"audio-card-symbolic", "audio-card-symbolic", NULL };
+ const char * const device_descriptions[] = {
+ "Built-in Audio", "Built-in audio", "Thinkpad Tunderbolt 3 Dock USB Audio", "Thinkpad Tunderbolt 3 Dock
USB Audio", NULL
+ };
+
+ gtk_init ();
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_window_set_title (GTK_WINDOW (window), "hello world");
+ gtk_window_set_resizable (GTK_WINDOW (window), TRUE);
+ g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);
+
+ box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
+ g_object_set (box, "margin", 10, NULL);
+ gtk_container_add (GTK_CONTAINER (window), box);
+
+ button = gtk_drop_down_new ();
+
+ model = G_LIST_MODEL (pango_cairo_font_map_get_default ());
+ gtk_drop_down_set_model (GTK_DROP_DOWN (button), model);
+ gtk_drop_down_set_selected (GTK_DROP_DOWN (button), 0);
+
+ expression = gtk_cclosure_expression_new (G_TYPE_STRING, NULL,
+ 0, NULL,
+ (GCallback)get_family_name,
+ NULL, NULL);
+ gtk_drop_down_set_expression (GTK_DROP_DOWN (button), expression);
+ gtk_expression_unref (expression);
+ gtk_container_add (GTK_CONTAINER (box), button);
+
+ spin = gtk_spin_button_new_with_range (-1, g_list_model_get_n_items (G_LIST_MODEL (model)), 1);
+ gtk_widget_set_halign (spin, GTK_ALIGN_START);
+ g_object_bind_property (button, "selected", spin, "value", G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
+ gtk_container_add (GTK_CONTAINER (box), spin);
+
+ check = gtk_check_button_new_with_label ("Enable search");
+ g_object_bind_property (button, "enable-search", check, "active", G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
+ gtk_container_add (GTK_CONTAINER (box), check);
+
+ g_object_unref (model);
+
+ button = drop_down_new_from_strings (times, NULL, NULL);
+ gtk_container_add (GTK_CONTAINER (box), button);
+
+ button = drop_down_new_from_strings (many_times, NULL, NULL);
+ gtk_container_add (GTK_CONTAINER (box), button);
+
+ button = drop_down_new_from_strings (many_times, NULL, NULL);
+ gtk_drop_down_set_enable_search (GTK_DROP_DOWN (button), TRUE);
+ expression = gtk_cclosure_expression_new (G_TYPE_STRING, NULL,
+ 0, NULL,
+ (GCallback)get_title,
+ NULL, NULL);
+ gtk_drop_down_set_expression (GTK_DROP_DOWN (button), expression);
+ gtk_expression_unref (expression);
+ gtk_container_add (GTK_CONTAINER (box), button);
+
+ button = drop_down_new_from_strings (device_titles, device_icons, device_descriptions);
+ gtk_container_add (GTK_CONTAINER (box), button);
+
+ gtk_widget_show (window);
+
+ gtk_main ();
+
+ return 0;
+}
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