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gtk/gtk/gtkcombobox.c
Sophie Herold a546ae32d7 Remove all nicks and blurbs from param specs 
Those property features don't seem to be in use anywhere.
They are redundant since the docs cover the same information
and more. They also created unnecessary translation work.

Closes #4904
2022-05-11 18:16:29 +02:00

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/* gtkcombobox.c
* Copyright (C) 2002, 2003 Kristian Rietveld <kris@gtk.org>
*
* 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 "config.h"
#include "gtkcomboboxprivate.h"
#include "gtkbox.h"
#include "gtkcellareabox.h"
#include "gtkcelllayout.h"
#include "gtkcellrenderertext.h"
#include "gtkcellview.h"
#include "gtkeventcontrollerkey.h"
#include "gtkeventcontrollerscroll.h"
#include "gtkframe.h"
#include "gtkbuiltiniconprivate.h"
#include "gtkintl.h"
#include "gtkliststore.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtkshortcutcontroller.h"
#include "gtktogglebutton.h"
#include "gtktreepopoverprivate.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetprivate.h"
#include <gobject/gvaluecollector.h>
#include <string.h>
#include <stdarg.h>
/**
* GtkComboBox:
*
* A `GtkComboBox` is a widget that allows the user to choose from a list of
* valid choices.
*
* ![An example GtkComboBox](combo-box.png)
*
* The `GtkComboBox` displays the selected choice; when activated, the
* `GtkComboBox` displays a popup which allows the user to make a new choice.
*
* The `GtkComboBox` uses the model-view pattern; the list of valid choices
* is specified in the form of a tree model, and the display of the choices
* can be adapted to the data in the model by using cell renderers, as you
* would in a tree view. This is possible since `GtkComboBox` implements the
* [iface@Gtk.CellLayout] interface. The tree model holding the valid
* choices is not restricted to a flat list, it can be a real tree, and the
* popup will reflect the tree structure.
*
* To allow the user to enter values not in the model, the
* [property@Gtk.ComboBox:has-entry] property allows the `GtkComboBox` to
* contain a [class@Gtk.Entry]. This entry can be accessed by calling
* [method@Gtk.ComboBox.get_child] on the combo box.
*
* For a simple list of textual choices, the model-view API of `GtkComboBox`
* can be a bit overwhelming. In this case, [class@Gtk.ComboBoxText] offers
* a simple alternative. Both `GtkComboBox` and `GtkComboBoxText` can contain
* an entry.
*
* ## CSS nodes
*
* ```
* combobox
* ├── box.linked
* │ ╰── button.combo
* │ ╰── box
* │ ├── cellview
* │ ╰── arrow
* ╰── window.popup
* ```
*
* A normal combobox contains a box with the .linked class, a button
* with the .combo class and inside those buttons, there are a cellview and
* an arrow.
*
* ```
* combobox
* ├── box.linked
* │ ├── entry.combo
* │ ╰── button.combo
* │ ╰── box
* │ ╰── arrow
* ╰── window.popup
* ```
*
* A `GtkComboBox` with an entry has a single CSS node with name combobox.
* It contains a box with the .linked class. That box contains an entry and
* a button, both with the .combo class added. The button also contains another
* node with name arrow.
*
* # Accessibility
*
* `GtkComboBox` uses the %GTK_ACCESSIBLE_ROLE_COMBO_BOX role.
*/
typedef struct
{
GtkWidget *child;
GtkTreeModel *model;
GtkCellArea *area;
int active; /* Only temporary */
GtkTreeRowReference *active_row;
GtkWidget *cell_view;
GtkWidget *box;
GtkWidget *button;
GtkWidget *arrow;
GtkWidget *popup_widget;
guint popup_idle_id;
guint scroll_timer;
guint resize_idle_id;
/* For "has-entry" specific behavior we track
* an automated cell renderer and text column
*/
int text_column;
GtkCellRenderer *text_renderer;
int id_column;
guint popup_in_progress : 1;
guint popup_shown : 1;
guint has_frame : 1;
guint is_cell_renderer : 1;
guint editing_canceled : 1;
guint auto_scroll : 1;
guint button_sensitivity : 2;
guint has_entry : 1;
guint popup_fixed_width : 1;
GtkTreeViewRowSeparatorFunc row_separator_func;
gpointer row_separator_data;
GDestroyNotify row_separator_destroy;
} GtkComboBoxPrivate;
/* There are 2 modes to this widget, which can be characterized as follows:
*
* 1) no child added:
*
* cell_view -> GtkCellView, regular child
* button -> GtkToggleButton set_parent to combo
* arrow -> GtkArrow set_parent to button
* popup_widget -> GtkMenu
*
* 2) child added:
*
* cell_view -> NULL
* button -> GtkToggleButton set_parent to combo
* arrow -> GtkArrow, child of button
* popup_widget -> GtkMenu
*/
enum {
ACTIVATE,
CHANGED,
MOVE_ACTIVE,
POPUP,
POPDOWN,
FORMAT_ENTRY_TEXT,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_MODEL,
PROP_ACTIVE,
PROP_HAS_FRAME,
PROP_POPUP_SHOWN,
PROP_BUTTON_SENSITIVITY,
PROP_EDITING_CANCELED,
PROP_HAS_ENTRY,
PROP_ENTRY_TEXT_COLUMN,
PROP_POPUP_FIXED_WIDTH,
PROP_ID_COLUMN,
PROP_ACTIVE_ID,
PROP_CHILD
};
static guint combo_box_signals[LAST_SIGNAL] = {0,};
/* common */
static void gtk_combo_box_cell_layout_init (GtkCellLayoutIface *iface);
static void gtk_combo_box_cell_editable_init (GtkCellEditableIface *iface);
static void gtk_combo_box_constructed (GObject *object);
static void gtk_combo_box_dispose (GObject *object);
static void gtk_combo_box_unmap (GtkWidget *widget);
static void gtk_combo_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *spec);
static void gtk_combo_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *spec);
static gboolean gtk_combo_box_grab_focus (GtkWidget *widget);
static void gtk_combo_box_button_toggled (GtkWidget *widget,
gpointer data);
static void gtk_combo_box_menu_show (GtkWidget *menu,
gpointer user_data);
static void gtk_combo_box_menu_hide (GtkWidget *menu,
gpointer user_data);
static void gtk_combo_box_unset_model (GtkComboBox *combo_box);
static void gtk_combo_box_set_active_internal (GtkComboBox *combo_box,
GtkTreePath *path);
static void gtk_combo_box_real_move_active (GtkComboBox *combo_box,
GtkScrollType scroll);
static void gtk_combo_box_real_popup (GtkComboBox *combo_box);
static gboolean gtk_combo_box_real_popdown (GtkComboBox *combo_box);
static gboolean gtk_combo_box_scroll_controller_scroll (GtkEventControllerScroll *scroll,
double dx,
double dy,
GtkComboBox *combo_box);
/* listening to the model */
static void gtk_combo_box_model_row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data);
static void gtk_combo_box_model_row_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer user_data);
static void gtk_combo_box_model_rows_reordered (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
int *new_order,
gpointer user_data);
static void gtk_combo_box_model_row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
static void gtk_combo_box_menu_activate (GtkWidget *menu,
const char *path,
GtkComboBox *combo_box);
static void gtk_combo_box_update_sensitivity (GtkComboBox *combo_box);
static gboolean gtk_combo_box_menu_key (GtkEventControllerKey *key,
guint keyval,
guint keycode,
GdkModifierType modifiers,
GtkComboBox *combo_box);
static void gtk_combo_box_menu_popup (GtkComboBox *combo_box);
/* cell layout */
static GtkCellArea *gtk_combo_box_cell_layout_get_area (GtkCellLayout *cell_layout);
static gboolean gtk_combo_box_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling);
static void gtk_combo_box_child_show (GtkWidget *widget,
GtkComboBox *combo_box);
static void gtk_combo_box_child_hide (GtkWidget *widget,
GtkComboBox *combo_box);
/* GtkComboBox:has-entry callbacks */
static void gtk_combo_box_entry_contents_changed (GtkEntry *entry,
gpointer user_data);
static void gtk_combo_box_entry_active_changed (GtkComboBox *combo_box,
gpointer user_data);
static char *gtk_combo_box_format_entry_text (GtkComboBox *combo_box,
const char *path);
/* GtkBuildable method implementation */
static GtkBuildableIface *parent_buildable_iface;
static void gtk_combo_box_buildable_init (GtkBuildableIface *iface);
static void gtk_combo_box_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type);
static gboolean gtk_combo_box_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
GtkBuildableParser *parser,
gpointer *data);
static void gtk_combo_box_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer data);
static GObject *gtk_combo_box_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const char *childname);
/* GtkCellEditable method implementations */
static void gtk_combo_box_start_editing (GtkCellEditable *cell_editable,
GdkEvent *event);
G_DEFINE_TYPE_WITH_CODE (GtkComboBox, gtk_combo_box, GTK_TYPE_WIDGET,
G_ADD_PRIVATE (GtkComboBox)
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
gtk_combo_box_cell_layout_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_EDITABLE,
gtk_combo_box_cell_editable_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_combo_box_buildable_init))
/* common */
static void
gtk_combo_box_measure (GtkWidget *widget,
GtkOrientation orientation,
int size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
gtk_widget_measure (priv->box,
orientation,
size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_combo_box_activate (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
gtk_widget_activate (priv->button);
}
static void
gtk_combo_box_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
int menu_width;
gtk_widget_size_allocate (priv->box,
&(GtkAllocation) {
0, 0,
width, height
}, baseline);
gtk_widget_set_size_request (priv->popup_widget, -1, -1);
if (priv->popup_fixed_width)
gtk_widget_measure (priv->popup_widget, GTK_ORIENTATION_HORIZONTAL, -1,
&menu_width, NULL, NULL, NULL);
else
gtk_widget_measure (priv->popup_widget, GTK_ORIENTATION_HORIZONTAL, -1,
NULL, &menu_width, NULL, NULL);
gtk_widget_set_size_request (priv->popup_widget,
MAX (width, menu_width), -1);
gtk_popover_present (GTK_POPOVER (priv->popup_widget));
}
static void
gtk_combo_box_compute_expand (GtkWidget *widget,
gboolean *hexpand,
gboolean *vexpand)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkWidget *child = priv->child;
if (child && child != priv->cell_view)
{
*hexpand = gtk_widget_compute_expand (child, GTK_ORIENTATION_HORIZONTAL);
*vexpand = gtk_widget_compute_expand (child, GTK_ORIENTATION_VERTICAL);
}
else
{
*hexpand = FALSE;
*vexpand = FALSE;
}
}
static void
gtk_combo_box_class_init (GtkComboBoxClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
widget_class = (GtkWidgetClass *)klass;
widget_class->mnemonic_activate = gtk_combo_box_mnemonic_activate;
widget_class->grab_focus = gtk_combo_box_grab_focus;
widget_class->focus = gtk_widget_focus_child;
widget_class->measure = gtk_combo_box_measure;
widget_class->size_allocate = gtk_combo_box_size_allocate;
widget_class->unmap = gtk_combo_box_unmap;
widget_class->compute_expand = gtk_combo_box_compute_expand;
object_class = (GObjectClass *)klass;
object_class->constructed = gtk_combo_box_constructed;
object_class->dispose = gtk_combo_box_dispose;
object_class->set_property = gtk_combo_box_set_property;
object_class->get_property = gtk_combo_box_get_property;
klass->activate = gtk_combo_box_activate;
klass->format_entry_text = gtk_combo_box_format_entry_text;
/* signals */
/**
* GtkComboBox::activate:
* @widget: the object which received the signal.
*
* Emitted to when the combo box is activated.
*
* The `::activate` signal on `GtkComboBox` is an action signal and
* emitting it causes the combo box to pop up its dropdown.
*
* Since: 4.6
*/
combo_box_signals[ACTIVATE] =
g_signal_new (I_ ("activate"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkComboBoxClass, activate),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
gtk_widget_class_set_activate_signal (widget_class, combo_box_signals[ACTIVATE]);
/**
* GtkComboBox::changed:
* @widget: the object which received the signal
*
* Emitted when the active item is changed.
*
* The can be due to the user selecting a different item from the list,
* or due to a call to [method@Gtk.ComboBox.set_active_iter]. It will
* also be emitted while typing into the entry of a combo box with an entry.
*/
combo_box_signals[CHANGED] =
g_signal_new (I_("changed"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkComboBoxClass, changed),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkComboBox::move-active:
* @widget: the object that received the signal
* @scroll_type: a `GtkScrollType`
*
* Emitted to move the active selection.
*
* This is an [keybinding signal](class.SignalAction.html).
*/
combo_box_signals[MOVE_ACTIVE] =
g_signal_new_class_handler (I_("move-active"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_combo_box_real_move_active),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
/**
* GtkComboBox::popup:
* @widget: the object that received the signal
*
* Emitted to popup the combo box list.
*
* This is an [keybinding signal](class.SignalAction.html).
*
* The default binding for this signal is Alt+Down.
*/
combo_box_signals[POPUP] =
g_signal_new_class_handler (I_("popup"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_combo_box_real_popup),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkComboBox::popdown:
* @button: the object which received the signal
*
* Emitted to popdown the combo box list.
*
* This is an [keybinding signal](class.SignalAction.html).
*
* The default bindings for this signal are Alt+Up and Escape.
*/
combo_box_signals[POPDOWN] =
g_signal_new_class_handler (I_("popdown"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_combo_box_real_popdown),
NULL, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
/**
* GtkComboBox::format-entry-text:
* @combo: the object which received the signal
* @path: the [struct@Gtk.TreePath] string from the combo box's current model
* to format text for
*
* Emitted to allow changing how the text in a combo box's entry is displayed.
*
* See [property@Gtk.ComboBox:has-entry].
*
* Connect a signal handler which returns an allocated string representing
* @path. That string will then be used to set the text in the combo box's
* entry. The default signal handler uses the text from the
* [property@Gtk.ComboBox:entry-text-column] model column.
*
* Here's an example signal handler which fetches data from the model and
* displays it in the entry.
* ```c
* static char *
* format_entry_text_callback (GtkComboBox *combo,
* const char *path,
* gpointer user_data)
* {
* GtkTreeIter iter;
* GtkTreeModel model;
* double value;
*
* model = gtk_combo_box_get_model (combo);
*
* gtk_tree_model_get_iter_from_string (model, &iter, path);
* gtk_tree_model_get (model, &iter,
* THE_DOUBLE_VALUE_COLUMN, &value,
* -1);
*
* return g_strdup_printf ("%g", value);
* }
* ```
*
* Returns: (transfer full): a newly allocated string representing @path
* for the current `GtkComboBox` model.
*/
combo_box_signals[FORMAT_ENTRY_TEXT] =
g_signal_new (I_("format-entry-text"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkComboBoxClass, format_entry_text),
_gtk_single_string_accumulator, NULL,
_gtk_marshal_STRING__STRING,
G_TYPE_STRING, 1, G_TYPE_STRING);
/* key bindings */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Down, GDK_ALT_MASK,
"popup",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Down, GDK_ALT_MASK,
"popup",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Up, GDK_ALT_MASK,
"popdown",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Up, GDK_ALT_MASK,
"popdown",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Escape, 0,
"popdown",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Up, 0,
"move-active",
"(i)", GTK_SCROLL_STEP_UP);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Up, 0,
"move-active",
"(i)", GTK_SCROLL_STEP_UP);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Page_Up, 0,
"move-active",
"(i)", GTK_SCROLL_PAGE_UP);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Page_Up, 0,
"move-active",
"(i)", GTK_SCROLL_PAGE_UP);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Home, 0,
"move-active",
"(i)", GTK_SCROLL_START);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Home, 0,
"move-active",
"(i)", GTK_SCROLL_START);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Down, 0,
"move-active",
"(i)", GTK_SCROLL_STEP_DOWN);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Down, 0,
"move-active",
"(i)", GTK_SCROLL_STEP_DOWN);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Page_Down, 0,
"move-active",
"(i)", GTK_SCROLL_PAGE_DOWN);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Page_Down, 0,
"move-active",
"(i)", GTK_SCROLL_PAGE_DOWN);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_End, 0,
"move-active",
"(i)", GTK_SCROLL_END);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_End, 0,
"move-active",
"(i)", GTK_SCROLL_END);
/* properties */
g_object_class_override_property (object_class,
PROP_EDITING_CANCELED,
"editing-canceled");
/**
* GtkComboBox:model: (attributes org.gtk.Property.get=gtk_combo_box_get_model org.gtk.Property.set=gtk_combo_box_set_model)
*
* The model from which the combo box takes its values.
*/
g_object_class_install_property (object_class,
PROP_MODEL,
g_param_spec_object ("model", NULL, NULL,
GTK_TYPE_TREE_MODEL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:active: (attributes org.gtk.Property.get=gtk_combo_box_get_active org.gtk.Property.set=gtk_combo_box_set_active)
*
* The item which is currently active.
*
* If the model is a non-flat treemodel, and the active item is not an
* immediate child of the root of the tree, this property has the value
* `gtk_tree_path_get_indices (path)[0]`, where `path` is the
* [struct@Gtk.TreePath] of the active item.
*/
g_object_class_install_property (object_class,
PROP_ACTIVE,
g_param_spec_int ("active", NULL, NULL,
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:has-frame:
*
* The `has-frame` property controls whether a frame is drawn around the entry.
*/
g_object_class_install_property (object_class,
PROP_HAS_FRAME,
g_param_spec_boolean ("has-frame", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:popup-shown:
*
* Whether the combo boxes dropdown is popped up.
*
* Note that this property is mainly useful, because
* it allows you to connect to notify::popup-shown.
*/
g_object_class_install_property (object_class,
PROP_POPUP_SHOWN,
g_param_spec_boolean ("popup-shown", NULL, NULL,
FALSE,
GTK_PARAM_READABLE));
/**
* GtkComboBox:button-sensitivity: (attributes org.gtk.Property.get=gtk_combo_box_get_button_sensitivity org.gtk.Property.set=gtk_combo_box_set_button_sensitivity)
*
* Whether the dropdown button is sensitive when
* the model is empty.
*/
g_object_class_install_property (object_class,
PROP_BUTTON_SENSITIVITY,
g_param_spec_enum ("button-sensitivity", NULL, NULL,
GTK_TYPE_SENSITIVITY_TYPE,
GTK_SENSITIVITY_AUTO,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:has-entry: (attributes org.gtk.Property.get=gtk_combo_box_get_has_entry)
*
* Whether the combo box has an entry.
*/
g_object_class_install_property (object_class,
PROP_HAS_ENTRY,
g_param_spec_boolean ("has-entry", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
/**
* GtkComboBox:entry-text-column: (attributes org.gtk.Property.get=gtk_combo_box_get_entry_text_column org.gtk.Property.set=gtk_combo_box_set_entry_text_column)
*
* The model column to associate with strings from the entry.
*
* This is property only relevant if the combo was created with
* [property@Gtk.ComboBox:has-entry] is %TRUE.
*/
g_object_class_install_property (object_class,
PROP_ENTRY_TEXT_COLUMN,
g_param_spec_int ("entry-text-column", NULL, NULL,
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:id-column: (attributes org.gtk.Property.get=gtk_combo_box_get_id_column org.gtk.Property.set=gtk_combo_box_set_id_column)
*
* The model column that provides string IDs for the values
* in the model, if != -1.
*/
g_object_class_install_property (object_class,
PROP_ID_COLUMN,
g_param_spec_int ("id-column", NULL, NULL,
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:active-id: (attributes org.gtk.Property.get=gtk_combo_box_get_active_id org.gtk.Property.set=gtk_combo_box_set_active_id)
*
* The value of the ID column of the active row.
*/
g_object_class_install_property (object_class,
PROP_ACTIVE_ID,
g_param_spec_string ("active-id", NULL, NULL,
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:popup-fixed-width: (attributes org.gtk.Property.get=gtk_combo_box_get_popup_fixed_width org.gtk.Property.set=gtk_combo_box_set_popup_fixed_width)
*
* Whether the popup's width should be a fixed width matching the
* allocated width of the combo box.
*/
g_object_class_install_property (object_class,
PROP_POPUP_FIXED_WIDTH,
g_param_spec_boolean ("popup-fixed-width", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:child: (attributes org.gtk.Property.get=gtk_combo_box_get_child org.gtk.Property.set=gtk_combo_box_set_child)
*
* The child widget.
*/
g_object_class_install_property (object_class,
PROP_CHILD,
g_param_spec_object ("child", NULL, NULL,
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkcombobox.ui");
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkComboBox, box);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkComboBox, button);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkComboBox, arrow);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkComboBox, area);
gtk_widget_class_bind_template_child_internal_private (widget_class, GtkComboBox, popup_widget);
gtk_widget_class_bind_template_callback (widget_class, gtk_combo_box_button_toggled);
gtk_widget_class_bind_template_callback (widget_class, gtk_combo_box_menu_activate);
gtk_widget_class_bind_template_callback (widget_class, gtk_combo_box_menu_key);
gtk_widget_class_bind_template_callback (widget_class, gtk_combo_box_menu_show);
gtk_widget_class_bind_template_callback (widget_class, gtk_combo_box_menu_hide);
gtk_widget_class_set_css_name (widget_class, I_("combobox"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_COMBO_BOX);
}
static void
gtk_combo_box_buildable_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_combo_box_buildable_add_child;
iface->custom_tag_start = gtk_combo_box_buildable_custom_tag_start;
iface->custom_tag_end = gtk_combo_box_buildable_custom_tag_end;
iface->get_internal_child = gtk_combo_box_buildable_get_internal_child;
}
static void
gtk_combo_box_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->get_area = gtk_combo_box_cell_layout_get_area;
}
static void
gtk_combo_box_cell_editable_init (GtkCellEditableIface *iface)
{
iface->start_editing = gtk_combo_box_start_editing;
}
static gboolean
gtk_combo_box_row_separator_func (GtkTreeModel *model,
GtkTreeIter *iter,
GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->row_separator_func)
return priv->row_separator_func (model, iter, priv->row_separator_data);
return FALSE;
}
static void
gtk_combo_box_init (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkEventController *controller;
GtkEventController **controllers;
guint n_controllers, i;
priv->active = -1;
priv->active_row = NULL;
priv->popup_shown = FALSE;
priv->has_frame = TRUE;
priv->is_cell_renderer = FALSE;
priv->editing_canceled = FALSE;
priv->auto_scroll = FALSE;
priv->button_sensitivity = GTK_SENSITIVITY_AUTO;
priv->has_entry = FALSE;
priv->popup_fixed_width = TRUE;
priv->text_column = -1;
priv->text_renderer = NULL;
priv->id_column = -1;
g_type_ensure (GTK_TYPE_BUILTIN_ICON);
g_type_ensure (GTK_TYPE_TREE_POPOVER);
gtk_widget_init_template (GTK_WIDGET (combo_box));
gtk_widget_remove_css_class (priv->button, "toggle");
gtk_widget_add_css_class (priv->button, "combo");
gtk_tree_popover_set_row_separator_func (GTK_TREE_POPOVER (priv->popup_widget),
(GtkTreeViewRowSeparatorFunc)gtk_combo_box_row_separator_func,
combo_box, NULL);
controller = gtk_event_controller_scroll_new (GTK_EVENT_CONTROLLER_SCROLL_VERTICAL |
GTK_EVENT_CONTROLLER_SCROLL_DISCRETE);
g_signal_connect (controller, "scroll",
G_CALLBACK (gtk_combo_box_scroll_controller_scroll),
combo_box);
gtk_widget_add_controller (GTK_WIDGET (combo_box), controller);
controllers = gtk_widget_list_controllers (priv->popup_widget, GTK_PHASE_BUBBLE, &n_controllers);
for (i = 0; i < n_controllers; i ++)
{
controller = controllers[i];
if (GTK_IS_SHORTCUT_CONTROLLER (controller))
{
g_object_ref (controller);
gtk_widget_remove_controller (priv->popup_widget, controller);
gtk_widget_add_controller (priv->popup_widget, controller);
break;
}
}
g_free (controllers);
}
static void
gtk_combo_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
switch (prop_id)
{
case PROP_MODEL:
gtk_combo_box_set_model (combo_box, g_value_get_object (value));
break;
case PROP_ACTIVE:
gtk_combo_box_set_active (combo_box, g_value_get_int (value));
break;
case PROP_HAS_FRAME:
if (priv->has_frame != g_value_get_boolean (value))
{
priv->has_frame = g_value_get_boolean (value);
if (priv->has_entry)
gtk_entry_set_has_frame (GTK_ENTRY (priv->child), priv->has_frame);
g_object_notify (object, "has-frame");
}
break;
case PROP_POPUP_SHOWN:
if (g_value_get_boolean (value))
gtk_combo_box_popup (combo_box);
else
gtk_combo_box_popdown (combo_box);
break;
case PROP_BUTTON_SENSITIVITY:
gtk_combo_box_set_button_sensitivity (combo_box,
g_value_get_enum (value));
break;
case PROP_POPUP_FIXED_WIDTH:
gtk_combo_box_set_popup_fixed_width (combo_box,
g_value_get_boolean (value));
break;
case PROP_EDITING_CANCELED:
if (priv->editing_canceled != g_value_get_boolean (value))
{
priv->editing_canceled = g_value_get_boolean (value);
g_object_notify (object, "editing-canceled");
}
break;
case PROP_HAS_ENTRY:
priv->has_entry = g_value_get_boolean (value);
break;
case PROP_ENTRY_TEXT_COLUMN:
gtk_combo_box_set_entry_text_column (combo_box, g_value_get_int (value));
break;
case PROP_ID_COLUMN:
gtk_combo_box_set_id_column (combo_box, g_value_get_int (value));
break;
case PROP_ACTIVE_ID:
gtk_combo_box_set_active_id (combo_box, g_value_get_string (value));
break;
case PROP_CHILD:
gtk_combo_box_set_child (combo_box, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_combo_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value, priv->model);
break;
case PROP_ACTIVE:
g_value_set_int (value, gtk_combo_box_get_active (combo_box));
break;
case PROP_HAS_FRAME:
g_value_set_boolean (value, priv->has_frame);
break;
case PROP_POPUP_SHOWN:
g_value_set_boolean (value, priv->popup_shown);
break;
case PROP_BUTTON_SENSITIVITY:
g_value_set_enum (value, priv->button_sensitivity);
break;
case PROP_POPUP_FIXED_WIDTH:
g_value_set_boolean (value, priv->popup_fixed_width);
break;
case PROP_EDITING_CANCELED:
g_value_set_boolean (value, priv->editing_canceled);
break;
case PROP_HAS_ENTRY:
g_value_set_boolean (value, priv->has_entry);
break;
case PROP_ENTRY_TEXT_COLUMN:
g_value_set_int (value, priv->text_column);
break;
case PROP_ID_COLUMN:
g_value_set_int (value, priv->id_column);
break;
case PROP_ACTIVE_ID:
g_value_set_string (value, gtk_combo_box_get_active_id (combo_box));
break;
case PROP_CHILD:
g_value_set_object (value, gtk_combo_box_get_child (combo_box));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_combo_box_button_toggled (GtkWidget *widget,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
{
if (!priv->popup_in_progress)
gtk_combo_box_popup (combo_box);
}
else
{
gtk_combo_box_popdown (combo_box);
}
}
static void
gtk_combo_box_create_child (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->has_entry)
{
GtkWidget *entry;
entry = gtk_entry_new ();
gtk_combo_box_set_child (combo_box, entry);
gtk_widget_add_css_class (GTK_WIDGET (entry), "combo");
g_signal_connect (combo_box, "changed",
G_CALLBACK (gtk_combo_box_entry_active_changed), NULL);
}
else
{
priv->cell_view = gtk_cell_view_new_with_context (priv->area, NULL);
gtk_widget_set_hexpand (priv->cell_view, TRUE);
gtk_cell_view_set_fit_model (GTK_CELL_VIEW (priv->cell_view), TRUE);
gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view), priv->model);
gtk_box_insert_child_after (GTK_BOX (gtk_widget_get_parent (priv->arrow)), priv->cell_view, NULL);
priv->child = priv->cell_view;
}
}
static void
gtk_combo_box_add (GtkComboBox *combo_box,
GtkWidget *widget)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->box == NULL)
{
gtk_widget_set_parent (widget, GTK_WIDGET (combo_box));
return;
}
if (priv->has_entry && !GTK_IS_ENTRY (widget))
{
g_warning ("Attempting to add a widget with type %s to a GtkComboBox that needs an entry "
"(need an instance of GtkEntry or of a subclass)",
G_OBJECT_TYPE_NAME (widget));
return;
}
g_clear_pointer (&priv->cell_view, gtk_widget_unparent);
gtk_widget_set_hexpand (widget, TRUE);
gtk_box_insert_child_after (GTK_BOX (priv->box), widget, NULL);
priv->child = widget;
if (priv->has_entry)
{
g_signal_connect (widget, "changed",
G_CALLBACK (gtk_combo_box_entry_contents_changed),
combo_box);
gtk_entry_set_has_frame (GTK_ENTRY (widget), priv->has_frame);
}
}
static void
gtk_combo_box_remove (GtkComboBox *combo_box,
GtkWidget *widget)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreePath *path;
if (priv->has_entry)
{
if (widget && widget == priv->child)
g_signal_handlers_disconnect_by_func (widget,
gtk_combo_box_entry_contents_changed,
combo_box);
}
gtk_box_remove (GTK_BOX (priv->box), widget);
priv->child = NULL;
if (gtk_widget_in_destruction (GTK_WIDGET (combo_box)))
return;
gtk_widget_queue_resize (GTK_WIDGET (combo_box));
gtk_combo_box_create_child (combo_box);
if (gtk_tree_row_reference_valid (priv->active_row))
{
path = gtk_tree_row_reference_get_path (priv->active_row);
gtk_combo_box_set_active_internal (combo_box, path);
gtk_tree_path_free (path);
}
else
{
gtk_combo_box_set_active_internal (combo_box, NULL);
}
}
static void
gtk_combo_box_menu_show (GtkWidget *menu,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
gtk_combo_box_child_show (menu, user_data);
priv->popup_in_progress = TRUE;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
TRUE);
priv->popup_in_progress = FALSE;
}
static void
gtk_combo_box_menu_hide (GtkWidget *menu,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
gtk_combo_box_child_hide (menu,user_data);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button), FALSE);
}
static gboolean
cell_layout_is_sensitive (GtkCellLayout *layout)
{
GList *cells, *list;
gboolean sensitive;
cells = gtk_cell_layout_get_cells (layout);
sensitive = FALSE;
for (list = cells; list; list = list->next)
{
g_object_get (list->data, "sensitive", &sensitive, NULL);
if (sensitive)
break;
}
g_list_free (cells);
return sensitive;
}
static gboolean
tree_column_row_is_sensitive (GtkComboBox *combo_box,
GtkTreeIter *iter)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->row_separator_func)
{
if (priv->row_separator_func (priv->model, iter,
priv->row_separator_data))
return FALSE;
}
gtk_cell_area_apply_attributes (priv->area, priv->model, iter, FALSE, FALSE);
return cell_layout_is_sensitive (GTK_CELL_LAYOUT (priv->area));
}
static void
gtk_combo_box_menu_popup (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
#if 0
int active_item;
GtkWidget *active;
int width, min_width, nat_width;
#endif
gtk_tree_popover_open_submenu (GTK_TREE_POPOVER (priv->popup_widget), "main");
gtk_popover_popup (GTK_POPOVER (priv->popup_widget));
#if 0
active_item = -1;
if (gtk_tree_row_reference_valid (priv->active_row))
{
GtkTreePath *path;
path = gtk_tree_row_reference_get_path (priv->active_row);
active_item = gtk_tree_path_get_indices (path)[0];
gtk_tree_path_free (path);
}
/* FIXME handle nested menus better */
//gtk_tree_popover_set_active (GTK_TREE_POPOVER (priv->popup_widget), active_item);
width = gtk_widget_get_width (GTK_WIDGET (combo_box));
gtk_widget_set_size_request (priv->popup_widget, -1, -1);
gtk_widget_measure (priv->popup_widget, GTK_ORIENTATION_HORIZONTAL, -1,
&min_width, &nat_width, NULL, NULL);
if (priv->popup_fixed_width)
width = MAX (width, min_width);
else
width = MAX (width, nat_width);
gtk_widget_set_size_request (priv->popup_widget, width, -1);
g_signal_handlers_disconnect_by_func (priv->popup_widget,
gtk_menu_update_scroll_offset,
NULL);
if (priv->cell_view == NULL)
{
g_object_set (priv->popup_widget,
"anchor-hints", (GDK_ANCHOR_FLIP_Y |
GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE),
"rect-anchor-dx", 0,
NULL);
gtk_menu_popup_at_widget (GTK_MENU (priv->popup_widget),
gtk_bin_get_child (GTK_BIN (combo_box)),
GDK_GRAVITY_SOUTH_WEST,
GDK_GRAVITY_NORTH_WEST,
NULL);
}
else
{
int rect_anchor_dy = -2;
GList *i;
GtkWidget *child;
/* FIXME handle nested menus better */
active = gtk_menu_get_active (GTK_MENU (priv->popup_widget));
if (!(active && gtk_widget_get_visible (active)))
{
GList *children;
children = gtk_menu_shell_get_items (GTK_MENU_SHELL (priv->popup_widget));
for (i = children; i && !active; i = i->next)
{
child = i->data;
if (child && gtk_widget_get_visible (child))
active = child;
}
g_list_free (children);
}
if (active)
{
int child_height;
GList *children;
children = gtk_menu_shell_get_items (GTK_MENU_SHELL (priv->popup_widget));
for (i = children; i && i->data != active; i = i->next)
{
child = i->data;
if (child && gtk_widget_get_visible (child))
{
gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL, -1,
&child_height, NULL, NULL, NULL);
rect_anchor_dy -= child_height;
}
}
g_list_free (children);
gtk_widget_measure (active, GTK_ORIENTATION_VERTICAL, -1,
&child_height, NULL, NULL, NULL);
rect_anchor_dy -= child_height / 2;
}
g_object_set (priv->popup_widget,
"anchor-hints", (GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE),
"rect-anchor-dy", rect_anchor_dy,
NULL);
g_signal_connect (priv->popup_widget,
"popped-up",
G_CALLBACK (gtk_menu_update_scroll_offset),
NULL);
gtk_menu_popup_at_widget (GTK_MENU (priv->popup_widget),
GTK_WIDGET (combo_box),
GDK_GRAVITY_WEST,
GDK_GRAVITY_NORTH_WEST,
NULL);
}
#endif
}
/**
* gtk_combo_box_popup:
* @combo_box: a `GtkComboBox`
*
* Pops up the menu or dropdown list of @combo_box.
*
* This function is mostly intended for use by accessibility technologies;
* applications should have little use for it.
*
* Before calling this, @combo_box must be mapped, or nothing will happen.
*/
void
gtk_combo_box_popup (GtkComboBox *combo_box)
{
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (gtk_widget_get_mapped (GTK_WIDGET (combo_box)))
g_signal_emit (combo_box, combo_box_signals[POPUP], 0);
}
/**
* gtk_combo_box_popup_for_device:
* @combo_box: a `GtkComboBox`
* @device: a `GdkDevice`
*
* Pops up the menu of @combo_box.
*
* Note that currently this does not do anything with the device, as it was
* previously only used for list-mode combo boxes, and those were removed
* in GTK 4. However, it is retained in case similar functionality is added
* back later.
*/
void
gtk_combo_box_popup_for_device (GtkComboBox *combo_box,
GdkDevice *device)
{
/* As above, this currently does not do anything useful, and nothing with the
* passed-in device. But the bits that are not blatantly obsolete are kept. */
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (GDK_IS_DEVICE (device));
if (!gtk_widget_get_realized (GTK_WIDGET (combo_box)))
return;
if (gtk_widget_get_mapped (priv->popup_widget))
return;
gtk_combo_box_menu_popup (combo_box);
}
static void
gtk_combo_box_real_popup (GtkComboBox *combo_box)
{
gtk_combo_box_menu_popup (combo_box);
}
static gboolean
gtk_combo_box_real_popdown (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->popup_shown)
{
gtk_combo_box_popdown (combo_box);
return TRUE;
}
return FALSE;
}
/**
* gtk_combo_box_popdown:
* @combo_box: a `GtkComboBox`
*
* Hides the menu or dropdown list of @combo_box.
*
* This function is mostly intended for use by accessibility technologies;
* applications should have little use for it.
*/
void
gtk_combo_box_popdown (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
gtk_popover_popdown (GTK_POPOVER (priv->popup_widget));
}
static void
gtk_combo_box_unset_model (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->model)
{
g_signal_handlers_disconnect_by_func (priv->model,
gtk_combo_box_model_row_inserted,
combo_box);
g_signal_handlers_disconnect_by_func (priv->model,
gtk_combo_box_model_row_deleted,
combo_box);
g_signal_handlers_disconnect_by_func (priv->model,
gtk_combo_box_model_rows_reordered,
combo_box);
g_signal_handlers_disconnect_by_func (priv->model,
gtk_combo_box_model_row_changed,
combo_box);
g_object_unref (priv->model);
priv->model = NULL;
}
if (priv->active_row)
{
gtk_tree_row_reference_free (priv->active_row);
priv->active_row = NULL;
}
if (priv->cell_view)
gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view), NULL);
}
static void
gtk_combo_box_child_show (GtkWidget *widget,
GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
priv->popup_shown = TRUE;
g_object_notify (G_OBJECT (combo_box), "popup-shown");
}
static void
gtk_combo_box_child_hide (GtkWidget *widget,
GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
priv->popup_shown = FALSE;
g_object_notify (G_OBJECT (combo_box), "popup-shown");
}
typedef struct {
GtkComboBox *combo;
GtkTreePath *path;
GtkTreeIter iter;
gboolean found;
gboolean set;
} SearchData;
static gboolean
tree_next_func (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
SearchData *search_data = (SearchData *)data;
if (search_data->found)
{
if (!tree_column_row_is_sensitive (search_data->combo, iter))
return FALSE;
search_data->set = TRUE;
search_data->iter = *iter;
return TRUE;
}
if (gtk_tree_path_compare (path, search_data->path) == 0)
search_data->found = TRUE;
return FALSE;
}
static gboolean
tree_next (GtkComboBox *combo,
GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *next)
{
SearchData search_data;
search_data.combo = combo;
search_data.path = gtk_tree_model_get_path (model, iter);
search_data.found = FALSE;
search_data.set = FALSE;
gtk_tree_model_foreach (model, tree_next_func, &search_data);
*next = search_data.iter;
gtk_tree_path_free (search_data.path);
return search_data.set;
}
static gboolean
tree_prev_func (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
SearchData *search_data = (SearchData *)data;
if (gtk_tree_path_compare (path, search_data->path) == 0)
{
search_data->found = TRUE;
return TRUE;
}
if (!tree_column_row_is_sensitive (search_data->combo, iter))
return FALSE;
search_data->set = TRUE;
search_data->iter = *iter;
return FALSE;
}
static gboolean
tree_prev (GtkComboBox *combo,
GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *prev)
{
SearchData search_data;
search_data.combo = combo;
search_data.path = gtk_tree_model_get_path (model, iter);
search_data.found = FALSE;
search_data.set = FALSE;
gtk_tree_model_foreach (model, tree_prev_func, &search_data);
*prev = search_data.iter;
gtk_tree_path_free (search_data.path);
return search_data.set;
}
static gboolean
tree_last_func (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
SearchData *search_data = (SearchData *)data;
if (!tree_column_row_is_sensitive (search_data->combo, iter))
return FALSE;
search_data->set = TRUE;
search_data->iter = *iter;
return FALSE;
}
static gboolean
tree_last (GtkComboBox *combo,
GtkTreeModel *model,
GtkTreeIter *last)
{
SearchData search_data;
search_data.combo = combo;
search_data.set = FALSE;
gtk_tree_model_foreach (model, tree_last_func, &search_data);
*last = search_data.iter;
return search_data.set;
}
static gboolean
tree_first_func (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
SearchData *search_data = (SearchData *)data;
if (!tree_column_row_is_sensitive (search_data->combo, iter))
return FALSE;
search_data->set = TRUE;
search_data->iter = *iter;
return TRUE;
}
static gboolean
tree_first (GtkComboBox *combo,
GtkTreeModel *model,
GtkTreeIter *first)
{
SearchData search_data;
search_data.combo = combo;
search_data.set = FALSE;
gtk_tree_model_foreach (model, tree_first_func, &search_data);
*first = search_data.iter;
return search_data.set;
}
static gboolean
gtk_combo_box_scroll_controller_scroll (GtkEventControllerScroll *scroll,
double dx,
double dy,
GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
gboolean found = FALSE;
GtkTreeIter iter;
GtkTreeIter new_iter;
if (!gtk_combo_box_get_active_iter (combo_box, &iter))
return GDK_EVENT_PROPAGATE;
if (dy < 0)
found = tree_prev (combo_box, priv->model, &iter, &new_iter);
else if (dy > 0)
found = tree_next (combo_box, priv->model, &iter, &new_iter);
if (found)
gtk_combo_box_set_active_iter (combo_box, &new_iter);
return found;
}
/* callbacks */
static void
gtk_combo_box_menu_activate (GtkWidget *menu,
const char *path,
GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeIter iter;
if (gtk_tree_model_get_iter_from_string (priv->model, &iter, path))
gtk_combo_box_set_active_iter (combo_box, &iter);
g_object_set (combo_box,
"editing-canceled", FALSE,
NULL);
}
static void
gtk_combo_box_update_sensitivity (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeIter iter;
gboolean sensitive = TRUE; /* fool code checkers */
if (!priv->button)
return;
switch (priv->button_sensitivity)
{
case GTK_SENSITIVITY_ON:
sensitive = TRUE;
break;
case GTK_SENSITIVITY_OFF:
sensitive = FALSE;
break;
case GTK_SENSITIVITY_AUTO:
sensitive = priv->model &&
gtk_tree_model_get_iter_first (priv->model, &iter);
break;
default:
g_assert_not_reached ();
break;
}
gtk_widget_set_sensitive (priv->button, sensitive);
}
static void
gtk_combo_box_model_row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
gtk_combo_box_update_sensitivity (combo_box);
}
static void
gtk_combo_box_model_row_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (!gtk_tree_row_reference_valid (priv->active_row))
{
if (priv->cell_view)
gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view), NULL);
g_signal_emit (combo_box, combo_box_signals[CHANGED], 0);
}
gtk_combo_box_update_sensitivity (combo_box);
}
static void
gtk_combo_box_model_rows_reordered (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
int *new_order,
gpointer user_data)
{
gtk_tree_row_reference_reordered (G_OBJECT (user_data), path, iter, new_order);
}
static void
gtk_combo_box_model_row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreePath *active_path;
/* FIXME this belongs to GtkCellView */
if (gtk_tree_row_reference_valid (priv->active_row))
{
active_path = gtk_tree_row_reference_get_path (priv->active_row);
if (gtk_tree_path_compare (path, active_path) == 0 &&
priv->cell_view)
gtk_widget_queue_resize (GTK_WIDGET (priv->cell_view));
gtk_tree_path_free (active_path);
}
}
static gboolean
gtk_combo_box_menu_key (GtkEventControllerKey *key,
guint keyval,
guint keycode,
GdkModifierType modifiers,
GtkComboBox *combo_box)
{
gtk_event_controller_key_forward (key, GTK_WIDGET (combo_box));
return TRUE;
}
/*
* GtkCellLayout implementation
*/
static GtkCellArea *
gtk_combo_box_cell_layout_get_area (GtkCellLayout *cell_layout)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (cell_layout);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
return priv->area;
}
/*
* public API
*/
/**
* gtk_combo_box_new:
*
* Creates a new empty `GtkComboBox`.
*
* Returns: A new `GtkComboBox`
*/
GtkWidget *
gtk_combo_box_new (void)
{
return g_object_new (GTK_TYPE_COMBO_BOX, NULL);
}
/**
* gtk_combo_box_new_with_entry:
*
* Creates a new empty `GtkComboBox` with an entry.
*
* In order to use a combo box with entry, you need to tell it
* which column of the model contains the text for the entry
* by calling [method@Gtk.ComboBox.set_entry_text_column].
*
* Returns: A new `GtkComboBox`
*/
GtkWidget *
gtk_combo_box_new_with_entry (void)
{
return g_object_new (GTK_TYPE_COMBO_BOX, "has-entry", TRUE, NULL);
}
/**
* gtk_combo_box_new_with_model:
* @model: a `GtkTreeModel`
*
* Creates a new `GtkComboBox` with a model.
*
* Returns: A new `GtkComboBox`
*/
GtkWidget *
gtk_combo_box_new_with_model (GtkTreeModel *model)
{
GtkComboBox *combo_box;
g_return_val_if_fail (GTK_IS_TREE_MODEL (model), NULL);
combo_box = g_object_new (GTK_TYPE_COMBO_BOX, "model", model, NULL);
return GTK_WIDGET (combo_box);
}
/**
* gtk_combo_box_new_with_model_and_entry:
* @model: A `GtkTreeModel`
*
* Creates a new empty `GtkComboBox` with an entry and a model.
*
* See also [ctor@Gtk.ComboBox.new_with_entry].
*
* Returns: A new `GtkComboBox`
*/
GtkWidget *
gtk_combo_box_new_with_model_and_entry (GtkTreeModel *model)
{
return g_object_new (GTK_TYPE_COMBO_BOX,
"has-entry", TRUE,
"model", model,
NULL);
}
/**
* gtk_combo_box_get_active:
* @combo_box: A `GtkComboBox`
*
* Returns the index of the currently active item.
*
* If the model is a non-flat treemodel, and the active item is not
* an immediate child of the root of the tree, this function returns
* `gtk_tree_path_get_indices (path)[0]`, where `path` is the
* [struct@Gtk.TreePath] of the active item.
*
* Returns: An integer which is the index of the currently active item,
* or -1 if there’s no active item
*/
int
gtk_combo_box_get_active (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
int result;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
if (gtk_tree_row_reference_valid (priv->active_row))
{
GtkTreePath *path;
path = gtk_tree_row_reference_get_path (priv->active_row);
result = gtk_tree_path_get_indices (path)[0];
gtk_tree_path_free (path);
}
else
result = -1;
return result;
}
/**
* gtk_combo_box_set_active: (attributes org.gtk.Method.set_property=active)
* @combo_box: a `GtkComboBox`
* @index_: An index in the model passed during construction,
* or -1 to have no active item
*
* Sets the active item of @combo_box to be the item at @index.
*/
void
gtk_combo_box_set_active (GtkComboBox *combo_box,
int index_)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreePath *path = NULL;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (index_ >= -1);
if (priv->model == NULL)
{
/* Save index, in case the model is set after the index */
priv->active = index_;
if (index_ != -1)
return;
}
if (index_ != -1)
path = gtk_tree_path_new_from_indices (index_, -1);
gtk_combo_box_set_active_internal (combo_box, path);
if (path)
gtk_tree_path_free (path);
}
static void
gtk_combo_box_set_active_internal (GtkComboBox *combo_box,
GtkTreePath *path)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreePath *active_path;
int path_cmp;
/* Remember whether the initially active row is valid. */
gboolean is_valid_row_reference = gtk_tree_row_reference_valid (priv->active_row);
if (path && is_valid_row_reference)
{
active_path = gtk_tree_row_reference_get_path (priv->active_row);
path_cmp = gtk_tree_path_compare (path, active_path);
gtk_tree_path_free (active_path);
if (path_cmp == 0)
return;
}
if (priv->active_row)
{
gtk_tree_row_reference_free (priv->active_row);
priv->active_row = NULL;
}
if (!path)
{
gtk_tree_popover_set_active (GTK_TREE_POPOVER (priv->popup_widget), -1);
if (priv->cell_view)
gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view), NULL);
/*
* Do not emit a "changed" signal when an already invalid selection was
* now set to invalid.
*/
if (!is_valid_row_reference)
return;
}
else
{
priv->active_row =
gtk_tree_row_reference_new (priv->model, path);
gtk_tree_popover_set_active (GTK_TREE_POPOVER (priv->popup_widget),
gtk_tree_path_get_indices (path)[0]);
if (priv->cell_view)
gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view), path);
}
g_signal_emit (combo_box, combo_box_signals[CHANGED], 0);
g_object_notify (G_OBJECT (combo_box), "active");
if (priv->id_column >= 0)
g_object_notify (G_OBJECT (combo_box), "active-id");
}
/**
* gtk_combo_box_get_active_iter:
* @combo_box: A `GtkComboBox`
* @iter: (out): A `GtkTreeIter`
*
* Sets @iter to point to the currently active item.
*
* If no item is active, @iter is left unchanged.
*
* Returns: %TRUE if @iter was set, %FALSE otherwise
*/
gboolean
gtk_combo_box_get_active_iter (GtkComboBox *combo_box,
GtkTreeIter *iter)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreePath *path;
gboolean result;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
if (!gtk_tree_row_reference_valid (priv->active_row))
return FALSE;
path = gtk_tree_row_reference_get_path (priv->active_row);
result = gtk_tree_model_get_iter (priv->model, iter, path);
gtk_tree_path_free (path);
return result;
}
/**
* gtk_combo_box_set_active_iter:
* @combo_box: A `GtkComboBox`
* @iter: (nullable): The `GtkTreeIter`
*
* Sets the current active item to be the one referenced by @iter.
*
* If @iter is %NULL, the active item is unset.
*/
void
gtk_combo_box_set_active_iter (GtkComboBox *combo_box,
GtkTreeIter *iter)
{
GtkTreePath *path = NULL;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (iter)
path = gtk_tree_model_get_path (gtk_combo_box_get_model (combo_box), iter);
gtk_combo_box_set_active_internal (combo_box, path);
gtk_tree_path_free (path);
}
/**
* gtk_combo_box_set_model: (attributes org.gtk.Method.set_property=model)
* @combo_box: A `GtkComboBox`
* @model: (nullable): A `GtkTreeModel`
*
* Sets the model used by @combo_box to be @model.
*
* Will unset a previously set model (if applicable). If model is %NULL,
* then it will unset the model.
*
* Note that this function does not clear the cell renderers, you have to
* call [method@Gtk.CellLayout.clear] yourself if you need to set up different
* cell renderers for the new model.
*/
void
gtk_combo_box_set_model (GtkComboBox *combo_box,
GtkTreeModel *model)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
if (model == priv->model)
return;
gtk_combo_box_unset_model (combo_box);
if (model == NULL)
goto out;
priv->model = model;
g_object_ref (priv->model);
g_signal_connect (priv->model, "row-inserted",
G_CALLBACK (gtk_combo_box_model_row_inserted),
combo_box);
g_signal_connect (priv->model, "row-deleted",
G_CALLBACK (gtk_combo_box_model_row_deleted),
combo_box);
g_signal_connect (priv->model, "rows-reordered",
G_CALLBACK (gtk_combo_box_model_rows_reordered),
combo_box);
g_signal_connect (priv->model, "row-changed",
G_CALLBACK (gtk_combo_box_model_row_changed),
combo_box);
gtk_tree_popover_set_model (GTK_TREE_POPOVER (priv->popup_widget), priv->model);
if (priv->cell_view)
gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view),
priv->model);
if (priv->active != -1)
{
/* If an index was set in advance, apply it now */
gtk_combo_box_set_active (combo_box, priv->active);
priv->active = -1;
}
out:
gtk_combo_box_update_sensitivity (combo_box);
g_object_notify (G_OBJECT (combo_box), "model");
}
/**
* gtk_combo_box_get_model: (attributes org.gtk.Method.get_property=model)
* @combo_box: A `GtkComboBox`
*
* Returns the `GtkTreeModel` of @combo_box.
*
* Returns: (nullable) (transfer none): A `GtkTreeModel` which was passed
* during construction.
*/
GtkTreeModel *
gtk_combo_box_get_model (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
return priv->model;
}
static void
gtk_combo_box_real_move_active (GtkComboBox *combo_box,
GtkScrollType scroll)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeIter iter;
GtkTreeIter new_iter;
gboolean active_iter;
gboolean found;
if (!priv->model)
{
gtk_widget_error_bell (GTK_WIDGET (combo_box));
return;
}
active_iter = gtk_combo_box_get_active_iter (combo_box, &iter);
switch (scroll)
{
case GTK_SCROLL_STEP_BACKWARD:
case GTK_SCROLL_STEP_UP:
case GTK_SCROLL_STEP_LEFT:
if (active_iter)
{
found = tree_prev (combo_box, priv->model,
&iter, &new_iter);
break;
}
G_GNUC_FALLTHROUGH;
case GTK_SCROLL_PAGE_FORWARD:
case GTK_SCROLL_PAGE_DOWN:
case GTK_SCROLL_PAGE_RIGHT:
case GTK_SCROLL_END:
found = tree_last (combo_box, priv->model, &new_iter);
break;
case GTK_SCROLL_STEP_FORWARD:
case GTK_SCROLL_STEP_DOWN:
case GTK_SCROLL_STEP_RIGHT:
if (active_iter)
{
found = tree_next (combo_box, priv->model,
&iter, &new_iter);
break;
}
G_GNUC_FALLTHROUGH;
case GTK_SCROLL_PAGE_BACKWARD:
case GTK_SCROLL_PAGE_UP:
case GTK_SCROLL_PAGE_LEFT:
case GTK_SCROLL_START:
found = tree_first (combo_box, priv->model, &new_iter);
break;
case GTK_SCROLL_NONE:
case GTK_SCROLL_JUMP:
default:
return;
}
if (found && active_iter)
{
GtkTreePath *old_path;
GtkTreePath *new_path;
old_path = gtk_tree_model_get_path (priv->model, &iter);
new_path = gtk_tree_model_get_path (priv->model, &new_iter);
if (gtk_tree_path_compare (old_path, new_path) == 0)
found = FALSE;
gtk_tree_path_free (old_path);
gtk_tree_path_free (new_path);
}
if (found)
{
gtk_combo_box_set_active_iter (combo_box, &new_iter);
}
else
{
gtk_widget_error_bell (GTK_WIDGET (combo_box));
}
}
static gboolean
gtk_combo_box_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->has_entry)
{
if (priv->child)
gtk_widget_grab_focus (priv->child);
}
else
gtk_widget_mnemonic_activate (priv->button, group_cycling);
return TRUE;
}
static gboolean
gtk_combo_box_grab_focus (GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->has_entry)
{
if (priv->child)
return gtk_widget_grab_focus (priv->child);
else
return FALSE;
}
else
return gtk_widget_grab_focus (priv->button);
}
static void
gtk_combo_box_unmap (GtkWidget *widget)
{
gtk_combo_box_popdown (GTK_COMBO_BOX (widget));
GTK_WIDGET_CLASS (gtk_combo_box_parent_class)->unmap (widget);
}
static void
gtk_combo_box_entry_contents_changed (GtkEntry *entry,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
/*
* Fixes regression reported in bug #574059. The old functionality relied on
* bug #572478. As a bugfix, we now emit the "changed" signal ourselves
* when the selection was already set to -1.
*/
if (gtk_combo_box_get_active(combo_box) == -1)
g_signal_emit_by_name (combo_box, "changed");
else
gtk_combo_box_set_active (combo_box, -1);
}
static void
gtk_combo_box_entry_active_changed (GtkComboBox *combo_box,
gpointer user_data)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeModel *model;
GtkTreeIter iter;
if (gtk_combo_box_get_active_iter (combo_box, &iter))
{
GtkEntry *entry = GTK_ENTRY (priv->child);
if (entry)
{
GtkTreePath *path;
char *path_str;
char *text = NULL;
model = gtk_combo_box_get_model (combo_box);
path = gtk_tree_model_get_path (model, &iter);
path_str = gtk_tree_path_to_string (path);
g_signal_handlers_block_by_func (entry,
gtk_combo_box_entry_contents_changed,
combo_box);
g_signal_emit (combo_box, combo_box_signals[FORMAT_ENTRY_TEXT], 0,
path_str, &text);
gtk_editable_set_text (GTK_EDITABLE (entry), text);
g_signal_handlers_unblock_by_func (entry,
gtk_combo_box_entry_contents_changed,
combo_box);
gtk_tree_path_free (path);
g_free (text);
g_free (path_str);
}
}
}
static char *
gtk_combo_box_format_entry_text (GtkComboBox *combo_box,
const char *path)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeModel *model;
GtkTreeIter iter;
char *text = NULL;
if (priv->text_column >= 0)
{
model = gtk_combo_box_get_model (combo_box);
gtk_tree_model_get_iter_from_string (model, &iter, path);
gtk_tree_model_get (model, &iter,
priv->text_column, &text,
-1);
}
return text;
}
static void
gtk_combo_box_constructed (GObject *object)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
G_OBJECT_CLASS (gtk_combo_box_parent_class)->constructed (object);
gtk_combo_box_create_child (combo_box);
if (priv->has_entry)
{
priv->text_renderer = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box),
priv->text_renderer, TRUE);
gtk_combo_box_set_active (GTK_COMBO_BOX (combo_box), -1);
}
}
static void
gtk_combo_box_dispose (GObject* object)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->popup_idle_id > 0)
{
g_source_remove (priv->popup_idle_id);
priv->popup_idle_id = 0;
}
if (priv->box)
{
/* destroy things (unparent will kill the latest ref from us)
* last unref on button will destroy the arrow
*/
gtk_widget_unparent (priv->box);
priv->box = NULL;
priv->button = NULL;
priv->arrow = NULL;
priv->child = NULL;
priv->cell_view = NULL;
}
if (priv->row_separator_destroy)
priv->row_separator_destroy (priv->row_separator_data);
priv->row_separator_func = NULL;
priv->row_separator_data = NULL;
priv->row_separator_destroy = NULL;
if (priv->popup_widget)
{
/* Stop menu destruction triggering toggle on a now-invalid button */
g_signal_handlers_disconnect_by_func (priv->popup_widget,
gtk_combo_box_menu_hide,
combo_box);
g_clear_pointer (&priv->popup_widget, gtk_widget_unparent);
}
gtk_combo_box_unset_model (combo_box);
G_OBJECT_CLASS (gtk_combo_box_parent_class)->dispose (object);
}
static gboolean
gtk_cell_editable_key_pressed (GtkEventControllerKey *key,
guint keyval,
guint keycode,
GdkModifierType modifiers,
GtkComboBox *combo_box)
{
if (keyval == GDK_KEY_Escape)
{
g_object_set (combo_box,
"editing-canceled", TRUE,
NULL);
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
return TRUE;
}
else if (keyval == GDK_KEY_Return ||
keyval == GDK_KEY_ISO_Enter ||
keyval == GDK_KEY_KP_Enter)
{
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
return TRUE;
}
return FALSE;
}
static void
gtk_combo_box_start_editing (GtkCellEditable *cell_editable,
GdkEvent *event)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (cell_editable);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkEventController *controller;
priv->is_cell_renderer = TRUE;
controller = gtk_event_controller_key_new ();
g_signal_connect_object (controller, "key-pressed",
G_CALLBACK (gtk_cell_editable_key_pressed),
cell_editable, 0);
if (priv->cell_view)
{
gtk_widget_add_controller (priv->button, controller);
gtk_widget_grab_focus (priv->button);
}
else
{
gtk_widget_add_controller (priv->child, controller);
gtk_widget_grab_focus (priv->child);
gtk_widget_set_can_focus (priv->button, FALSE);
}
}
/**
* gtk_combo_box_set_popup_fixed_width: (attributes org.gtk.Method.set_property=popup-fixed-width)
* @combo_box: a `GtkComboBox`
* @fixed: whether to use a fixed popup width
*
* Specifies whether the popup’s width should be a fixed width.
*
* If @fixed is %TRUE, the popup's width is set to match the
* allocated width of the combo box.
*/
void
gtk_combo_box_set_popup_fixed_width (GtkComboBox *combo_box,
gboolean fixed)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (priv->popup_fixed_width != fixed)
{
priv->popup_fixed_width = fixed;
g_object_notify (G_OBJECT (combo_box), "popup-fixed-width");
}
}
/**
* gtk_combo_box_get_popup_fixed_width: (attributes org.gtk.Method.get_property=popup-fixed-width)
* @combo_box: a `GtkComboBox`
*
* Gets whether the popup uses a fixed width.
*
* Returns: %TRUE if the popup uses a fixed width
*/
gboolean
gtk_combo_box_get_popup_fixed_width (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
return priv->popup_fixed_width;
}
/**
* gtk_combo_box_get_row_separator_func: (skip)
* @combo_box: a `GtkComboBox`
*
* Returns the current row separator function.
*
* Returns: (nullable): the current row separator function.
*/
GtkTreeViewRowSeparatorFunc
gtk_combo_box_get_row_separator_func (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
return priv->row_separator_func;
}
/**
* gtk_combo_box_set_row_separator_func:
* @combo_box: a `GtkComboBox`
* @func: (nullable): a `GtkTreeViewRowSeparatorFunc`
* @data: (nullable): user data to pass to @func
* @destroy: (nullable): destroy notifier for @data
*
* Sets the row separator function, which is used to determine
* whether a row should be drawn as a separator.
*
* If the row separator function is %NULL, no separators are drawn.
* This is the default value.
*/
void
gtk_combo_box_set_row_separator_func (GtkComboBox *combo_box,
GtkTreeViewRowSeparatorFunc func,
gpointer data,
GDestroyNotify destroy)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (priv->row_separator_destroy)
priv->row_separator_destroy (priv->row_separator_data);
priv->row_separator_func = func;
priv->row_separator_data = data;
priv->row_separator_destroy = destroy;
gtk_tree_popover_set_row_separator_func (GTK_TREE_POPOVER (priv->popup_widget),
(GtkTreeViewRowSeparatorFunc)gtk_combo_box_row_separator_func,
combo_box, NULL);
gtk_widget_queue_draw (GTK_WIDGET (combo_box));
}
/**
* gtk_combo_box_set_button_sensitivity: (attributes org.gtk.Method.set_property=button-sensitivity)
* @combo_box: a `GtkComboBox`
* @sensitivity: specify the sensitivity of the dropdown button
*
* Sets whether the dropdown button of the combo box should update
* its sensitivity depending on the model contents.
*/
void
gtk_combo_box_set_button_sensitivity (GtkComboBox *combo_box,
GtkSensitivityType sensitivity)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (priv->button_sensitivity != sensitivity)
{
priv->button_sensitivity = sensitivity;
gtk_combo_box_update_sensitivity (combo_box);
g_object_notify (G_OBJECT (combo_box), "button-sensitivity");
}
}
/**
* gtk_combo_box_get_button_sensitivity: (attributes org.gtk.Method.get_property=button-sensitivity)
* @combo_box: a `GtkComboBox`
*
* Returns whether the combo box sets the dropdown button
* sensitive or not when there are no items in the model.
*
* Returns: %GTK_SENSITIVITY_ON if the dropdown button
* is sensitive when the model is empty, %GTK_SENSITIVITY_OFF
* if the button is always insensitive or %GTK_SENSITIVITY_AUTO
* if it is only sensitive as long as the model has one item to
* be selected.
*/
GtkSensitivityType
gtk_combo_box_get_button_sensitivity (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
return priv->button_sensitivity;
}
/**
* gtk_combo_box_get_has_entry: (attributes org.gtk.Method.get_property=has-entry)
* @combo_box: a `GtkComboBox`
*
* Returns whether the combo box has an entry.
*
* Returns: whether there is an entry in @combo_box.
*/
gboolean
gtk_combo_box_get_has_entry (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
return priv->has_entry;
}
/**
* gtk_combo_box_set_entry_text_column:
* @combo_box: A `GtkComboBox`
* @text_column: A column in @model to get the strings from for
* the internal entry
*
* Sets the model column which @combo_box should use to get strings
* from to be @text_column.
*
* For this column no separate
* [class@Gtk.CellRenderer] is needed.
*
* The column @text_column in the model of @combo_box must be of
* type %G_TYPE_STRING.
*
* This is only relevant if @combo_box has been created with
* [property@Gtk.ComboBox:has-entry] as %TRUE.
*/
void
gtk_combo_box_set_entry_text_column (GtkComboBox *combo_box,
int text_column)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (text_column >= 0);
g_return_if_fail (priv->model == NULL || text_column < gtk_tree_model_get_n_columns (priv->model));
if (priv->text_column != text_column)
{
priv->text_column = text_column;
if (priv->text_renderer != NULL)
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box),
priv->text_renderer,
"text", text_column,
NULL);
g_object_notify (G_OBJECT (combo_box), "entry-text-column");
}
}
/**
* gtk_combo_box_get_entry_text_column:
* @combo_box: A `GtkComboBox`
*
* Returns the column which @combo_box is using to get the strings
* from to display in the internal entry.
*
* Returns: A column in the data source model of @combo_box.
*/
int
gtk_combo_box_get_entry_text_column (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
return priv->text_column;
}
static void
gtk_combo_box_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
if (GTK_IS_CELL_RENDERER (child))
_gtk_cell_layout_buildable_add_child (buildable, builder, child, type);
else if (GTK_IS_WIDGET (child))
gtk_combo_box_set_child (GTK_COMBO_BOX (buildable), GTK_WIDGET (child));
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static gboolean
gtk_combo_box_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
GtkBuildableParser *parser,
gpointer *data)
{
if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, data))
return TRUE;
return _gtk_cell_layout_buildable_custom_tag_start (buildable, builder, child,
tagname, parser, data);
}
static void
gtk_combo_box_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer data)
{
if (!_gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data))
parent_buildable_iface->custom_tag_end (buildable, builder, child, tagname, data);
}
static GObject *
gtk_combo_box_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const char *childname)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (buildable);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->has_entry && strcmp (childname, "entry") == 0)
return G_OBJECT (priv->child);
return parent_buildable_iface->get_internal_child (buildable, builder, childname);
}
/**
* gtk_combo_box_set_id_column: (attributes org.gtk.Method.set_property=id-column)
* @combo_box: A `GtkComboBox`
* @id_column: A column in @model to get string IDs for values from
*
* Sets the model column which @combo_box should use to get string IDs
* for values from.
*
* The column @id_column in the model of @combo_box must be of type
* %G_TYPE_STRING.
*/
void
gtk_combo_box_set_id_column (GtkComboBox *combo_box,
int id_column)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (id_column != priv->id_column)
{
g_return_if_fail (id_column >= 0);
g_return_if_fail (priv->model == NULL || id_column < gtk_tree_model_get_n_columns (priv->model));
priv->id_column = id_column;
g_object_notify (G_OBJECT (combo_box), "id-column");
g_object_notify (G_OBJECT (combo_box), "active-id");
}
}
/**
* gtk_combo_box_get_id_column: (attributes org.gtk.Method.get_property=id-column)
* @combo_box: A `GtkComboBox`
*
* Returns the column which @combo_box is using to get string IDs
* for values from.
*
* Returns: A column in the data source model of @combo_box.
*/
int
gtk_combo_box_get_id_column (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
return priv->id_column;
}
/**
* gtk_combo_box_get_active_id: (attributes org.gtk.Method.get_property=active-id)
* @combo_box: a `GtkComboBox`
*
* Returns the ID of the active row of @combo_box.
*
* This value is taken from the active row and the column specified
* by the [property@Gtk.ComboBox:id-column] property of @combo_box
* (see [method@Gtk.ComboBox.set_id_column]).
*
* The returned value is an interned string which means that you can
* compare the pointer by value to other interned strings and that you
* must not free it.
*
* If the [property@Gtk.ComboBox:id-column] property of @combo_box is
* not set, or if no row is active, or if the active row has a %NULL
* ID value, then %NULL is returned.
*
* Returns: (nullable): the ID of the active row
*/
const char *
gtk_combo_box_get_active_id (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeModel *model;
GtkTreeIter iter;
int column;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
column = priv->id_column;
if (column < 0)
return NULL;
model = gtk_combo_box_get_model (combo_box);
g_return_val_if_fail (gtk_tree_model_get_column_type (model, column) ==
G_TYPE_STRING, NULL);
if (gtk_combo_box_get_active_iter (combo_box, &iter))
{
const char *interned;
char *id;
gtk_tree_model_get (model, &iter, column, &id, -1);
interned = g_intern_string (id);
g_free (id);
return interned;
}
return NULL;
}
/**
* gtk_combo_box_set_active_id: (attributes org.gtk.Method.set_property=active-id)
* @combo_box: a `GtkComboBox`
* @active_id: (nullable): the ID of the row to select
*
* Changes the active row of @combo_box to the one that has an ID equal to
* @active_id.
*
* If @active_id is %NULL, the active row is unset. Rows having
* a %NULL ID string cannot be made active by this function.
*
* If the [property@Gtk.ComboBox:id-column] property of @combo_box is
* unset or if no row has the given ID then the function does nothing
* and returns %FALSE.
*
* Returns: %TRUE if a row with a matching ID was found. If a %NULL
* @active_id was given to unset the active row, the function
* always returns %TRUE.
*/
gboolean
gtk_combo_box_set_active_id (GtkComboBox *combo_box,
const char *active_id)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeModel *model;
GtkTreeIter iter;
gboolean match = FALSE;
int column;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
if (active_id == NULL)
{
gtk_combo_box_set_active (combo_box, -1);
return TRUE; /* active row was successfully unset */
}
column = priv->id_column;
if (column < 0)
return FALSE;
model = gtk_combo_box_get_model (combo_box);
g_return_val_if_fail (gtk_tree_model_get_column_type (model, column) ==
G_TYPE_STRING, FALSE);
if (gtk_tree_model_get_iter_first (model, &iter))
do {
char *id;
gtk_tree_model_get (model, &iter, column, &id, -1);
if (id != NULL)
match = strcmp (id, active_id) == 0;
g_free (id);
if (match)
{
gtk_combo_box_set_active_iter (combo_box, &iter);
break;
}
} while (gtk_tree_model_iter_next (model, &iter));
g_object_notify (G_OBJECT (combo_box), "active-id");
return match;
}
GtkWidget *
gtk_combo_box_get_popup (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
return priv->popup_widget;
}
/**
* gtk_combo_box_set_child: (attributes org.gtk.Method.set_property=child)
* @combo_box: a `GtkComboBox`
* @child: (nullable): the child widget
*
* Sets the child widget of @combo_box.
*/
void
gtk_combo_box_set_child (GtkComboBox *combo_box,
GtkWidget *child)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
if (priv->child)
gtk_combo_box_remove (combo_box, priv->child);
if (child)
gtk_combo_box_add (combo_box, child);
g_object_notify (G_OBJECT (combo_box), "child");
}
/**
* gtk_combo_box_get_child: (attributes org.gtk.Method.get_property=child)
* @combo_box: a `GtkComboBox`
*
* Gets the child widget of @combo_box.
*
* Returns: (nullable) (transfer none): the child widget of @combo_box
*/
GtkWidget *
gtk_combo_box_get_child (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
return priv->child;
}
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