AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
c297d45b8a
gtk2/gtk/gtkcombobox.c
Matthias Clasen b02db72e17 Rename GDK_MOD1_MASK to GDK_ALT_MASK 
We've hardcoded Mod1 = Alt for a long time, there is
no need to keep the confusing naming around anymore.
2020-04-06 01:40:49 -04:00

2997 lines
97 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* 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 "a11y/gtkcomboboxaccessible.h"
#include <gobject/gvaluecollector.h>
#include <string.h>
#include <stdarg.h>
/**
* SECTION:gtkcombobox
* @Short_description: A widget used to choose from a list of items
* @Title: GtkComboBox
* @See_also: #GtkComboBoxText, #GtkTreeModel, #GtkCellRenderer
*
* A GtkComboBox is a widget that allows the user to choose from a list of
* valid choices. The GtkComboBox displays the selected choice. When
* activated, the GtkComboBox displays a popup which allows the user to
* make a new choice. The style in which the selected value is displayed,
* and the style of the popup is determined by the current theme. It may
* be similar to a Windows-style combo box.
*
* 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
* #GtkCellLayout 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 “has-entry”
* property allows the GtkComboBox to contain a #GtkEntry. This entry
* can be accessed by calling gtk_bin_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, #GtkComboBoxText offers a
* simple alternative. Both GtkComboBox and #GtkComboBoxText can contain
* an entry.
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* 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.
*
* |[<!-- language="plain" -->
* 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.
*/
typedef struct
{
GtkTreeModel *model;
GtkCellArea *area;
gint 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
*/
gint text_column;
GtkCellRenderer *text_renderer;
gint 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 {
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
};
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_destroy (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_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_combo_box_remove (GtkContainer *container,
GtkWidget *widget);
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_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data);
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,
gdouble dx,
gdouble 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,
gint *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 gchar *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 gchar *gtk_combo_box_format_entry_text (GtkComboBox *combo_box,
const gchar *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 gchar *type);
static gboolean gtk_combo_box_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GtkBuildableParser *parser,
gpointer *data);
static void gtk_combo_box_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer data);
static GObject *gtk_combo_box_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const gchar *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_BIN,
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_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);
gint 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_native_check_resize (GTK_NATIVE (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;
child = gtk_bin_get_child (GTK_BIN (combo_box));
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;
GtkContainerClass *container_class;
GtkWidgetClass *widget_class;
container_class = (GtkContainerClass *)klass;
container_class->forall = gtk_combo_box_forall;
container_class->add = gtk_combo_box_add;
container_class->remove = gtk_combo_box_remove;
widget_class = (GtkWidgetClass *)klass;
widget_class->size_allocate = gtk_combo_box_size_allocate;
widget_class->mnemonic_activate = gtk_combo_box_mnemonic_activate;
widget_class->grab_focus = gtk_combo_box_grab_focus;
widget_class->measure = gtk_combo_box_measure;
widget_class->unmap = gtk_combo_box_unmap;
widget_class->destroy = gtk_combo_box_destroy;
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->format_entry_text = gtk_combo_box_format_entry_text;
/* signals */
/**
* GtkComboBox::changed:
* @widget: the object which received the signal
*
* The changed signal is 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 gtk_combo_box_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
*
* The ::move-active signal is a
* [keybinding signal][GtkBindingSignal]
* which gets emitted to move the active selection.
*/
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
*
* The ::popup signal is a
* [keybinding signal][GtkBindingSignal]
* which gets emitted to popup the combo box list.
*
* 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
*
* The ::popdown signal is a
* [keybinding signal][GtkBindingSignal]
* which gets emitted to popdown the combo box list.
*
* 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 GtkTreePath string from the combo box's current model to format text for
*
* For combo boxes that are created with an entry (See GtkComboBox:has-entry).
*
* A signal which allows you to change how the text displayed in a combo box's
* entry is displayed.
*
* 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 GtkComboBox::entry-text-column
* model column.
*
* Here's an example signal handler which fetches data from the model and
* displays it in the entry.
* |[<!-- language="C" -->
* static gchar*
* format_entry_text_callback (GtkComboBox *combo,
* const gchar *path,
* gpointer user_data)
* {
* GtkTreeIter iter;
* GtkTreeModel model;
* gdouble 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:
*
* The model from which the combo box takes the values shown
* in the list.
*/
g_object_class_install_property (object_class,
PROP_MODEL,
g_param_spec_object ("model",
P_("ComboBox model"),
P_("The model for the combo box"),
GTK_TYPE_TREE_MODEL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox: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 #GtkTreePath of the active item.
*/
g_object_class_install_property (object_class,
PROP_ACTIVE,
g_param_spec_int ("active",
P_("Active item"),
P_("The item which is currently active"),
-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",
P_("Has Frame"),
P_("Whether the combo box draws a frame around the child"),
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",
P_("Popup shown"),
P_("Whether the combo’s dropdown is shown"),
FALSE,
GTK_PARAM_READABLE));
/**
* GtkComboBox: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",
P_("Button Sensitivity"),
P_("Whether the dropdown button is sensitive when the model is empty"),
GTK_TYPE_SENSITIVITY_TYPE,
GTK_SENSITIVITY_AUTO,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox: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",
P_("Has Entry"),
P_("Whether combo box has an entry"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
/**
* GtkComboBox:entry-text-column:
*
* The column in the combo box's model to associate with strings from the entry
* if the combo was created with #GtkComboBox:has-entry = %TRUE.
*/
g_object_class_install_property (object_class,
PROP_ENTRY_TEXT_COLUMN,
g_param_spec_int ("entry-text-column",
P_("Entry Text Column"),
P_("The column in the combo box’s model to associate "
"with strings from the entry if the combo was "
"created with #GtkComboBox:has-entry = %TRUE"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:id-column:
*
* The column in the combo box's model 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",
P_("ID Column"),
P_("The column in the combo box’s model that provides "
"string IDs for the values in the model"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox: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",
P_("Active id"),
P_("The value of the id column "
"for the active row"),
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox: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",
P_("Popup Fixed Width"),
P_("Whether the popup’s width should be a "
"fixed width matching the allocated width "
"of the combo box"),
TRUE,
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_accessible_type (widget_class, GTK_TYPE_COMBO_BOX_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, I_("combobox"));
}
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 (gtk_bin_get_child (GTK_BIN (combo_box))),
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;
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;
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);
GtkWidget *child;
if (priv->has_entry)
{
GtkWidget *entry;
entry = gtk_entry_new ();
gtk_container_add (GTK_CONTAINER (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
{
child = gtk_cell_view_new_with_context (priv->area, NULL);
priv->cell_view = child;
gtk_widget_set_hexpand (child, 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);
_gtk_bin_set_child (GTK_BIN (combo_box), priv->cell_view);
}
}
static void
gtk_combo_box_add (GtkContainer *container,
GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (container);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
if (priv->box == NULL)
{
gtk_widget_set_parent (widget, GTK_WIDGET (container));
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;
}
if (priv->cell_view)
{
gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (priv->cell_view)),
priv->cell_view);
_gtk_bin_set_child (GTK_BIN (container), NULL);
priv->cell_view = NULL;
}
gtk_widget_set_hexpand (widget, TRUE);
gtk_box_insert_child_after (GTK_BOX (priv->box), widget, NULL);
_gtk_bin_set_child (GTK_BIN (container), 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 (GtkContainer *container,
GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (container);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreePath *path;
if (priv->has_entry)
{
GtkWidget *child_widget;
child_widget = gtk_bin_get_child (GTK_BIN (container));
if (widget && widget == child_widget)
{
g_signal_handlers_disconnect_by_func (widget,
gtk_combo_box_entry_contents_changed,
container);
}
}
gtk_container_remove (GTK_CONTAINER (priv->box), widget);
_gtk_bin_set_child (GTK_BIN (container), NULL);
if (gtk_widget_in_destruction (GTK_WIDGET (combo_box)))
return;
gtk_widget_queue_resize (GTK_WIDGET (container));
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
gint 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
{
gint 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)
{
gint 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 ComboBoxes,
* 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_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (container);
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkWidget *child;
child = gtk_bin_get_child (GTK_BIN (container));
if (child && child != priv->cell_view)
(* callback) (child, callback_data);
}
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,
gdouble dx,
gdouble 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 gchar *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,
gint *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.
*
* 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 the model initialized to @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 with the model initialized to @model.
*
* 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, or -1 if there’s no
* 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 #GtkTreePath of the active item.
*
* Returns: An integer which is the index of the currently active item,
* or -1 if there’s no active item.
*/
gint
gtk_combo_box_get_active (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
gint 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:
* @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,
gint 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;
gint 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 any item is active.
* Otherwise, @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: (allow-none): The #GtkTreeIter, or %NULL
*
* Sets the current active item to be the one referenced by @iter, or
* unsets the active item if @iter is %NULL.
*/
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:
* @combo_box: A #GtkComboBox
* @model: (allow-none): 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 gtk_cell_layout_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:
* @combo_box: A #GtkComboBox
*
* Returns the #GtkTreeModel which is acting as data source for @combo_box.
*
* Returns: (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)
{
GtkWidget* child;
child = gtk_bin_get_child (GTK_BIN (combo_box));
if (child)
gtk_widget_grab_focus (child);
}
else
gtk_widget_grab_focus (priv->button);
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)
{
GtkWidget *child;
child = gtk_bin_get_child (GTK_BIN (combo_box));
if (child)
return gtk_widget_grab_focus (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_destroy (GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
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;
_gtk_bin_set_child (GTK_BIN (combo_box), 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;
GTK_WIDGET_CLASS (gtk_combo_box_parent_class)->destroy (widget);
priv->cell_view = NULL;
}
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)
{
GtkTreeModel *model;
GtkTreeIter iter;
if (gtk_combo_box_get_active_iter (combo_box, &iter))
{
GtkEntry *entry = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (combo_box)));
if (entry)
{
GtkTreePath *path;
gchar *path_str;
gchar *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 gchar *
gtk_combo_box_format_entry_text (GtkComboBox *combo_box,
const gchar *path)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeModel *model;
GtkTreeIter iter;
gchar *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_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;
GtkWidget *child;
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
{
child = gtk_bin_get_child (GTK_BIN (combo_box));
gtk_widget_add_controller (child, controller);
gtk_widget_grab_focus (child);
gtk_widget_set_can_focus (priv->button, FALSE);
}
}
/**
* gtk_combo_box_set_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
* matching 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:
* @combo_box: a #GtkComboBox
*
* Gets whether the popup uses a fixed width matching
* the allocated width of the combo box.
*
* 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_popup_accessible:
* @combo_box: a #GtkComboBox
*
* Gets the accessible object corresponding to the combo box’s popup.
*
* This function is mostly intended for use by accessibility technologies;
* applications should have little use for it.
*
* Returns: (transfer none): the accessible object corresponding
* to the combo box’s popup.
*/
AtkObject*
gtk_combo_box_get_popup_accessible (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 gtk_widget_get_accessible (priv->popup_widget);
}
/**
* gtk_combo_box_get_row_separator_func: (skip)
* @combo_box: a #GtkComboBox
*
* Returns the current row separator function.
*
* Returns: 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: a #GtkTreeViewRowSeparatorFunc
* @data: (allow-none): user data to pass to @func, or %NULL
* @destroy: (allow-none): destroy notifier for @data, or %NULL
*
* 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:
* @combo_box: a #GtkComboBox
* @sensitivity: specify the sensitivity of the dropdown button
*
* Sets whether the dropdown button of the combo box should be
* always sensitive (%GTK_SENSITIVITY_ON), never sensitive (%GTK_SENSITIVITY_OFF)
* or only if there is at least one item to display (%GTK_SENSITIVITY_AUTO).
**/
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:
* @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:
* @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. 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
* #GtkComboBox:has-entry as %TRUE.
*/
void
gtk_combo_box_set_entry_text_column (GtkComboBox *combo_box,
gint 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.
*/
gint
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 gchar *type)
{
if (GTK_IS_CELL_RENDERER (child))
_gtk_cell_layout_buildable_add_child (buildable, builder, child, type);
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 gchar *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 gchar *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 gchar *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 (gtk_bin_get_child (GTK_BIN (buildable)));
return parent_buildable_iface->get_internal_child (buildable, builder, childname);
}
/**
* gtk_combo_box_set_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,
gint 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:
* @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.
*/
gint
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:
* @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 #GtkComboBox:id-column
* property of @combo_box (see gtk_combo_box_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 #GtkComboBox: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, or %NULL
**/
const gchar *
gtk_combo_box_get_active_id (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeModel *model;
GtkTreeIter iter;
gint 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 gchar *interned;
gchar *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:
* @combo_box: a #GtkComboBox
* @active_id: (allow-none): the ID of the row to select, or %NULL
*
* Changes the active row of @combo_box to the one that has an ID equal to
* @active_id, or unsets the active row if @active_id is %NULL. Rows having
* a %NULL ID string cannot be made active by this function.
*
* If the #GtkComboBox: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 gchar *active_id)
{
GtkComboBoxPrivate *priv = gtk_combo_box_get_instance_private (combo_box);
GtkTreeModel *model;
GtkTreeIter iter;
gboolean match = FALSE;
gint 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 {
gchar *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;
}
Reference in New Issue View Git Blame Copy Permalink