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gtk2/gtk/gtkcombobox.c
Daniel Boles e4ede33a65 combobox: Work around popup handler altering model 
GtkFileChooserButton installs a handler for the popped-up signal, which
refilters the menu, in order to hide the “(None)” item from the popup
if it was previously selected in the ComboBox. This oddity means that:

 • Until recently, this item would be selected in the menu shell, which
   would then be popped up and change the selection away from that item.
   This was therefore redundant (more on which below!) but benign.

 • After the patch for https://bugzilla.gnome.org/show_bug.cgi?id=771242
   however, this causes a critical assertion fail, as now we stash the
   originally selected item in a pointer so that it can be selected only
   after realisation/popup – but by that stage, the model has just been
   refiltered and the previous pointer no longer refers to a valid item.

This commit works around this problem by, after popping up the menu,
getting the active item again, in case a popped-up handler has gone and
invalidated the pointer to the active item that we saved before popup.

If a handler does this, everything done to find/use the original item is
pointless. But this avoids the ugly critical in FileChooserButton, while
not harming every other ComboBox that doesn’t mess with its model while
popping up (hopefully the vast majority), and it’s very difficult to
imagine a way to check if the active item is /going to/ be hidden later)
2017-01-18 22:24:24 +00:00

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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 "gtkcombobox.h"
#include "gtkadjustment.h"
#include "gtkcellareabox.h"
#include "gtktreemenu.h"
#include "gtkbindings.h"
#include "gtkcelllayout.h"
#include "gtkcellrenderertext.h"
#include "gtkcellview.h"
#include "gtkcontainerprivate.h"
#include "gtkcsscustomgadgetprivate.h"
#include "gtkeventbox.h"
#include "gtkframe.h"
#include "gtkiconprivate.h"
#include "gtkbox.h"
#include "gtkliststore.h"
#include "gtkmain.h"
#include "gtkmenuprivate.h"
#include "gtkmenushellprivate.h"
#include "gtkscrolledwindow.h"
#include "gtktogglebutton.h"
#include "gtktreeselection.h"
#include "gtkwidgetpath.h"
#include "gtkwidgetprivate.h"
#include "gtkwindow.h"
#include "gtktypebuiltins.h"
#include "gtkprivate.h"
#include "gtkcomboboxprivate.h"
#include <gobject/gvaluecollector.h>
#include <string.h>
#include <stdarg.h>
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtkentryprivate.h"
#include "gtktreeprivate.h"
#include "a11y/gtkcomboboxaccessible.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 bx with the .linked class and that box contains an entry and a
* button, both with the .combo class added.
* The button also contains another node with name arrow.
*/
/* WELCOME, to THE house of evil code */
struct _GtkComboBoxPrivate
{
GtkTreeModel *model;
GtkCellArea *area;
gint col_column;
gint row_column;
gint wrap_width;
gint active; /* Only temporary */
GtkTreeRowReference *active_row;
GtkWidget *cell_view;
GtkWidget *box;
GtkWidget *button;
GtkWidget *arrow;
GtkWidget *popup_widget;
GtkWidget *popup_window;
GtkWidget *scrolled_window;
GtkCssGadget *gadget;
gulong inserted_id;
gulong deleted_id;
gulong reordered_id;
gulong changed_id;
guint popup_idle_id;
GdkEvent *trigger_event;
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;
GdkDevice *grab_pointer;
};
/* While debugging this evil code, I have learned that
* there are actually 4 modes to this widget, which can
* be characterized as follows
*
* 1) menu mode, no child added
*
* tree_view -> NULL
* cell_view -> GtkCellView, regular child
* button -> GtkToggleButton set_parent to combo
* arrow -> GtkArrow set_parent to button
* popup_widget -> GtkMenu
* popup_window -> NULL
* scrolled_window -> NULL
*
* 2) menu mode, child added
*
* tree_view -> NULL
* cell_view -> NULL
* button -> GtkToggleButton set_parent to combo
* arrow -> GtkArrow, child of button
* popup_widget -> GtkMenu
* popup_window -> NULL
* scrolled_window -> NULL
*
* 3) list mode, no child added
*
* tree_view -> GtkTreeView, child of scrolled_window
* cell_view -> GtkCellView, regular child
* button -> GtkToggleButton, set_parent to combo
* arrow -> GtkArrow, child of button
* popup_widget -> tree_view
* popup_window -> GtkWindow
* scrolled_window -> GtkScrolledWindow, child of popup_window
*
* 4) list mode, child added
*
* tree_view -> GtkTreeView, child of scrolled_window
* cell_view -> NULL
* button -> GtkToggleButton, set_parent to combo
* arrow -> GtkArrow, child of button
* popup_widget -> tree_view
* popup_window -> GtkWindow
* scrolled_window -> GtkScrolledWindow, child of popup_window
*
*/
enum {
CHANGED,
MOVE_ACTIVE,
POPUP,
POPDOWN,
FORMAT_ENTRY_TEXT,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_MODEL,
PROP_WRAP_WIDTH,
PROP_ROW_SPAN_COLUMN,
PROP_COLUMN_SPAN_COLUMN,
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_CELL_AREA
};
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_finalize (GObject *object);
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 void 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_set_popup_widget (GtkComboBox *combo_box,
GtkWidget *popup);
static void gtk_combo_box_unset_model (GtkComboBox *combo_box);
static void gtk_combo_box_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static gboolean gtk_combo_box_scroll_event (GtkWidget *widget,
GdkEventScroll *event);
static void gtk_combo_box_set_active_internal (GtkComboBox *combo_box,
GtkTreePath *path);
static void gtk_combo_box_check_appearance (GtkComboBox *combo_box);
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);
/* 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);
/* menu */
static void gtk_combo_box_menu_setup (GtkComboBox *combo_box);
static void gtk_combo_box_menu_destroy (GtkComboBox *combo_box);
static gboolean gtk_combo_box_menu_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_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_press (GtkWidget *widget,
GdkEventKey *event,
gpointer data);
static void gtk_combo_box_menu_popup (GtkComboBox *combo_box,
const GdkEvent *trigger_event);
/* 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,
GMarkupParser *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 (GtkCssGadget *gadget,
GtkOrientation orientation,
int size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = combo_box->priv;
gtk_widget_measure (priv->box,
orientation,
size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_combo_box_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = combo_box->priv;
gtk_widget_size_allocate_with_baseline (priv->box, (GtkAllocation *) allocation, baseline);
gtk_widget_get_clip (priv->box, out_clip);
if (gtk_widget_get_visible (priv->popup_widget))
{
gint menu_width;
if (priv->wrap_width == 0)
{
gtk_widget_set_size_request (priv->popup_widget, -1, -1);
if (priv->popup_fixed_width)
gtk_widget_get_preferred_width (priv->popup_widget, &menu_width, NULL);
else
gtk_widget_get_preferred_width (priv->popup_widget, NULL, &menu_width);
gtk_widget_set_size_request (priv->popup_widget,
MAX (allocation->width, menu_width), -1);
}
/* reposition the menu after giving it a new width */
gtk_menu_reposition (GTK_MENU (priv->popup_widget));
}
}
static gboolean
gtk_combo_box_render (GtkCssGadget *gadget,
GtkSnapshot *snapshot,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = combo_box->priv;
gtk_widget_snapshot_child (widget,
priv->box, snapshot);
return FALSE;
}
static void
gtk_combo_box_measure_ (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
gint dummy;
/* https://bugzilla.gnome.org/show_bug.cgi?id=729496 */
if (natural == NULL)
natural = &dummy;
gtk_css_gadget_get_preferred_size (GTK_COMBO_BOX (widget)->priv->gadget,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_combo_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAllocation clip;
gtk_widget_set_allocation (widget, allocation);
gtk_css_gadget_allocate (GTK_COMBO_BOX (widget)->priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
static void
gtk_combo_box_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
gtk_css_gadget_snapshot (GTK_COMBO_BOX (widget)->priv->gadget, snapshot);
}
static void
gtk_combo_box_compute_expand (GtkWidget *widget,
gboolean *hexpand,
gboolean *vexpand)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = combo_box->priv;
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;
GtkBindingSet *binding_set;
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->snapshot = gtk_combo_box_snapshot;
widget_class->scroll_event = gtk_combo_box_scroll_event;
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->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->finalize = gtk_combo_box_finalize;
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.
*
* Since: 2.4
*/
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,
g_cclosure_marshal_VOID__VOID,
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.
*
* Since: 2.12
*/
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,
g_cclosure_marshal_VOID__ENUM,
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.
*
* Since: 2.12
*/
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,
g_cclosure_marshal_VOID__VOID,
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.
*
* Since: 2.12
*/
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.
*
* Since: 3.4
*/
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 */
binding_set = gtk_binding_set_by_class (widget_class);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, GDK_MOD1_MASK,
"popup", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, GDK_MOD1_MASK,
"popup", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, GDK_MOD1_MASK,
"popdown", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, GDK_MOD1_MASK,
"popdown", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0,
"popdown", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_UP);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_UP);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Up, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Up, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Home, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Home, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_DOWN);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_DOWN);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Down, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Down, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_End, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_END);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_End, 0,
"move-active", 1,
GTK_TYPE_SCROLL_TYPE, 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.
*
* Since: 2.4
*/
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:wrap-width:
*
* If wrap-width is set to a positive value, the list will be
* displayed in multiple columns, the number of columns is
* determined by wrap-width.
*
* Since: 2.4
*/
g_object_class_install_property (object_class,
PROP_WRAP_WIDTH,
g_param_spec_int ("wrap-width",
P_("Wrap width"),
P_("Wrap width for laying out the items in a grid"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:row-span-column:
*
* If this is set to a non-negative value, it must be the index of a column
* of type %G_TYPE_INT in the model.
*
* The values of that column are used to determine how many rows a value in
* the list will span. Therefore, the values in the model column pointed to
* by this property must be greater than zero and not larger than wrap-width.
*
* Since: 2.4
*/
g_object_class_install_property (object_class,
PROP_ROW_SPAN_COLUMN,
g_param_spec_int ("row-span-column",
P_("Row span column"),
P_("TreeModel column containing the row span values"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkComboBox:column-span-column:
*
* If this is set to a non-negative value, it must be the index of a column
* of type %G_TYPE_INT in the model.
*
* The values of that column are used to determine how many columns a value
* in the list will span.
*
* Since: 2.4
*/
g_object_class_install_property (object_class,
PROP_COLUMN_SPAN_COLUMN,
g_param_spec_int ("column-span-column",
P_("Column span column"),
P_("TreeModel column containing the column span values"),
-1,
G_MAXINT,
-1,
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.
*
* Since: 2.4
*/
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.
*
* Since: 2.6
*/
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.
*
* Since: 2.10
*/
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.
*
* Since: 2.14
*/
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.
*
* Since: 2.24
*/
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.
*
* Since: 2.24
*/
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.
*
* Since: 3.0
*/
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.
*
* Since: 3.0
*/
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.
*
* Since: 3.0
*/
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));
/**
* GtkComboBox:cell-area:
*
* The #GtkCellArea used to layout cell renderers for this combo box.
*
* If no area is specified when creating the combo box with gtk_combo_box_new_with_area()
* a horizontally oriented #GtkCellAreaBox will be used.
*
* Since: 3.0
*/
g_object_class_install_property (object_class,
PROP_CELL_AREA,
g_param_spec_object ("cell-area",
P_("Cell Area"),
P_("The GtkCellArea used to layout cells"),
GTK_TYPE_CELL_AREA,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
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_callback (widget_class, gtk_combo_box_button_toggled);
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COMBO_BOX_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, "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 void
gtk_combo_box_init (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv;
GtkCssNode *widget_node;
GtkStyleContext *context;
combo_box->priv = gtk_combo_box_get_instance_private (combo_box);
priv = combo_box->priv;
priv->wrap_width = 0;
priv->active = -1;
priv->active_row = NULL;
priv->col_column = -1;
priv->row_column = -1;
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_ICON);
gtk_widget_init_template (GTK_WIDGET (combo_box));
gtk_widget_add_events (priv->button, GDK_SCROLL_MASK);
context = gtk_widget_get_style_context (priv->button);
gtk_style_context_remove_class (context, "toggle");
gtk_style_context_add_class (context, "combo");
widget_node = gtk_widget_get_css_node (GTK_WIDGET (combo_box));
priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
GTK_WIDGET (combo_box),
gtk_combo_box_measure,
gtk_combo_box_allocate,
gtk_combo_box_render,
NULL, NULL);
}
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 = combo_box->priv;
GtkCellArea *area;
switch (prop_id)
{
case PROP_MODEL:
gtk_combo_box_set_model (combo_box, g_value_get_object (value));
break;
case PROP_WRAP_WIDTH:
gtk_combo_box_set_wrap_width (combo_box, g_value_get_int (value));
break;
case PROP_ROW_SPAN_COLUMN:
gtk_combo_box_set_row_span_column (combo_box, g_value_get_int (value));
break;
case PROP_COLUMN_SPAN_COLUMN:
gtk_combo_box_set_column_span_column (combo_box, g_value_get_int (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;
case PROP_CELL_AREA:
/* Construct-only, can only be assigned once */
area = g_value_get_object (value);
if (area)
{
if (priv->area != NULL)
{
g_warning ("cell-area has already been set, ignoring construct property");
g_object_ref_sink (area);
g_object_unref (area);
}
else
priv->area = g_object_ref_sink (area);
}
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 = combo_box->priv;
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value, priv->model);
break;
case PROP_WRAP_WIDTH:
g_value_set_int (value, priv->wrap_width);
break;
case PROP_ROW_SPAN_COLUMN:
g_value_set_int (value, priv->row_column);
break;
case PROP_COLUMN_SPAN_COLUMN:
g_value_set_int (value, priv->col_column);
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_CELL_AREA:
g_value_set_object (value, priv->area);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_combo_box_check_appearance (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = combo_box->priv;
/* Create the menu mode widgets, if they don't already exist. */
if (!GTK_IS_MENU (priv->popup_widget))
gtk_combo_box_menu_setup (combo_box);
}
static void
gtk_combo_box_button_toggled (GtkWidget *widget,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
{
if (!combo_box->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 = combo_box->priv;
GtkWidget *child;
if (priv->has_entry)
{
GtkWidget *entry;
GtkStyleContext *context;
entry = gtk_entry_new ();
gtk_widget_show (entry);
gtk_container_add (GTK_CONTAINER (combo_box), entry);
context = gtk_widget_get_style_context (GTK_WIDGET (entry));
gtk_style_context_add_class (context, "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_container_add (GTK_CONTAINER (gtk_widget_get_parent (priv->arrow)),
priv->cell_view);
_gtk_bin_set_child (GTK_BIN (combo_box), priv->cell_view);
gtk_widget_show (priv->cell_view);
}
}
static void
gtk_combo_box_add (GtkContainer *container,
GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (container);
GtkComboBoxPrivate *priv = combo_box->priv;
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);
gtk_widget_queue_resize (GTK_WIDGET (container));
priv->cell_view = NULL;
}
gtk_box_pack_start (GTK_BOX (priv->box), widget, TRUE, TRUE);
_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 = combo_box->priv;
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));
if (GTK_IS_MENU (priv->popup_widget))
{
gtk_combo_box_menu_destroy (combo_box);
gtk_menu_detach (GTK_MENU (priv->popup_widget));
priv->popup_widget = NULL;
}
gtk_combo_box_create_child (combo_box);
gtk_combo_box_menu_setup (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 = combo_box->priv;
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);
gtk_combo_box_child_hide (menu,user_data);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
FALSE);
}
static void
gtk_combo_box_detacher (GtkWidget *widget,
GtkMenu *menu)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = combo_box->priv;
g_return_if_fail (priv->popup_widget == (GtkWidget *) menu);
g_signal_handlers_disconnect_by_func (menu->priv->toplevel,
gtk_combo_box_menu_show,
combo_box);
g_signal_handlers_disconnect_by_func (menu->priv->toplevel,
gtk_combo_box_menu_hide,
combo_box);
priv->popup_widget = NULL;
}
static void
gtk_combo_box_set_popup_widget (GtkComboBox *combo_box,
GtkWidget *popup)
{
GtkComboBoxPrivate *priv = combo_box->priv;
if (GTK_IS_MENU (priv->popup_widget))
{
gtk_menu_detach (GTK_MENU (priv->popup_widget));
priv->popup_widget = NULL;
}
else if (priv->popup_widget)
{
gtk_container_remove (GTK_CONTAINER (priv->scrolled_window),
priv->popup_widget);
g_object_unref (priv->popup_widget);
priv->popup_widget = NULL;
}
if (GTK_IS_MENU (popup))
{
if (priv->popup_window)
{
gtk_widget_destroy (priv->popup_window);
priv->popup_window = NULL;
}
priv->popup_widget = popup;
/*
* Note that we connect to show/hide on the toplevel, not the
* menu itself, since the menu is not shown/hidden when it is
* popped up while torn-off.
*/
g_signal_connect (GTK_MENU (popup)->priv->toplevel, "show",
G_CALLBACK (gtk_combo_box_menu_show), combo_box);
g_signal_connect (GTK_MENU (popup)->priv->toplevel, "hide",
G_CALLBACK (gtk_combo_box_menu_hide), combo_box);
gtk_menu_attach_to_widget (GTK_MENU (popup),
GTK_WIDGET (combo_box),
gtk_combo_box_detacher);
}
else
{
if (!priv->popup_window)
{
GtkWidget *toplevel;
priv->popup_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_name (priv->popup_window, "gtk-combobox-popup-window");
gtk_window_set_type_hint (GTK_WINDOW (priv->popup_window),
GDK_WINDOW_TYPE_HINT_COMBO);
g_signal_connect (GTK_WINDOW (priv->popup_window),"show",
G_CALLBACK (gtk_combo_box_child_show),
combo_box);
g_signal_connect (GTK_WINDOW (priv->popup_window),"hide",
G_CALLBACK (gtk_combo_box_child_hide),
combo_box);
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo_box));
if (GTK_IS_WINDOW (toplevel))
{
gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
GTK_WINDOW (priv->popup_window));
gtk_window_set_transient_for (GTK_WINDOW (priv->popup_window),
GTK_WINDOW (toplevel));
}
gtk_window_set_resizable (GTK_WINDOW (priv->popup_window), FALSE);
gtk_window_set_screen (GTK_WINDOW (priv->popup_window),
gtk_widget_get_screen (GTK_WIDGET (combo_box)));
priv->scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
GTK_POLICY_NEVER,
GTK_POLICY_NEVER);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->scrolled_window),
GTK_SHADOW_IN);
gtk_widget_show (priv->scrolled_window);
gtk_container_add (GTK_CONTAINER (priv->popup_window),
priv->scrolled_window);
}
gtk_container_add (GTK_CONTAINER (priv->scrolled_window),
popup);
gtk_widget_show (popup);
g_object_ref (popup);
priv->popup_widget = popup;
}
}
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
cell_is_sensitive (GtkCellRenderer *cell,
gpointer data)
{
gboolean *sensitive = data;
g_object_get (cell, "sensitive", sensitive, NULL);
return *sensitive;
}
static gboolean
tree_column_row_is_sensitive (GtkComboBox *combo_box,
GtkTreeIter *iter)
{
GtkComboBoxPrivate *priv = combo_box->priv;
if (priv->row_separator_func)
{
if (priv->row_separator_func (priv->model, iter,
priv->row_separator_data))
return FALSE;
}
if (priv->area)
{
gboolean sensitive;
gtk_cell_area_apply_attributes (priv->area, priv->model, iter, FALSE, FALSE);
sensitive = FALSE;
gtk_cell_area_foreach (priv->area, cell_is_sensitive, &sensitive);
return sensitive;
}
return TRUE;
}
static void
update_menu_sensitivity (GtkComboBox *combo_box,
GtkWidget *menu)
{
GtkComboBoxPrivate *priv = combo_box->priv;
GList *children, *child;
GtkWidget *item, *submenu;
GtkWidget *cell_view;
gboolean sensitive;
if (!priv->model)
return;
children = gtk_container_get_children (GTK_CONTAINER (menu));
for (child = children; child; child = child->next)
{
item = GTK_WIDGET (child->data);
cell_view = gtk_bin_get_child (GTK_BIN (item));
if (!GTK_IS_CELL_VIEW (cell_view))
continue;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (item));
if (submenu != NULL)
{
gtk_widget_set_sensitive (item, TRUE);
update_menu_sensitivity (combo_box, submenu);
}
else
{
sensitive = cell_layout_is_sensitive (GTK_CELL_LAYOUT (cell_view));
gtk_widget_set_sensitive (item, sensitive);
}
}
g_list_free (children);
}
static void
gtk_combo_box_menu_popup (GtkComboBox *combo_box,
const GdkEvent *trigger_event)
{
GtkComboBoxPrivate *priv = combo_box->priv;
gint active_item;
GtkAllocation border_allocation;
GtkAllocation content_allocation;
update_menu_sensitivity (combo_box, priv->popup_widget);
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_menu_set_active (GTK_MENU (priv->popup_widget), active_item);
if (priv->wrap_width == 0)
{
gint width, min_width, nat_width;
gtk_css_gadget_get_content_allocation (priv->gadget, &content_allocation, NULL);
width = content_allocation.width;
gtk_widget_set_size_request (priv->popup_widget, -1, -1);
gtk_widget_get_preferred_width (priv->popup_widget, &min_width, &nat_width);
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);
g_object_set (priv->popup_widget, "menu-type-hint", GDK_WINDOW_TYPE_HINT_COMBO, NULL);
if (priv->wrap_width > 0 || priv->cell_view == NULL)
{
gtk_css_gadget_get_border_allocation (priv->gadget, &border_allocation, NULL);
gtk_css_gadget_get_content_allocation (priv->gadget, &content_allocation, NULL);
g_object_set (priv->popup_widget,
"anchor-hints", (GDK_ANCHOR_FLIP_Y |
GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE),
"rect-anchor-dx", border_allocation.x - content_allocation.x,
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,
trigger_event);
}
else
{
/* FIXME handle nested menus better */
GtkWidget *active = gtk_menu_get_active (GTK_MENU (priv->popup_widget));;
gint rect_anchor_dy = -2;
GList *i;
GtkWidget *child;
if (!(active && gtk_widget_get_visible (active)))
{
for (i = GTK_MENU_SHELL (priv->popup_widget)->priv->children; i && !active; i = i->next)
{
child = i->data;
if (child && gtk_widget_get_visible (child))
active = child;
}
}
if (active)
{
gint child_height;
for (i = GTK_MENU_SHELL (priv->popup_widget)->priv->children; i && i->data != active; i = i->next)
{
child = i->data;
if (child && gtk_widget_get_visible (child))
{
gtk_widget_get_preferred_height (child, &child_height, NULL);
rect_anchor_dy -= child_height;
}
}
gtk_widget_get_preferred_height (active, &child_height, 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,
trigger_event);
/* As a hack, re-get the active item, in case a popup handler, like that
* of FileChooserButton, just caused the menu to be refiltered, making the
* previous active item pointer invalid now. This seems pretty ugly and
* makes the y-offset loop pointless for such cases, so FIXME later? */
active = gtk_menu_get_active (GTK_MENU (priv->popup_widget));
if (active)
gtk_menu_shell_select_item (GTK_MENU_SHELL (priv->popup_widget), active);
}
}
static gboolean
popup_grab_on_window (GdkWindow *window,
GdkDevice *pointer)
{
GdkGrabStatus status;
GdkSeat *seat;
seat = gdk_device_get_seat (pointer);
status = gdk_seat_grab (seat, window,
GDK_SEAT_CAPABILITY_ALL, TRUE,
NULL, NULL, NULL, NULL);
return status == GDK_GRAB_SUCCESS;
}
static gboolean
gtk_combo_box_grab_broken_event (GtkWidget *widget,
GdkEventGrabBroken *event,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
if (event->grab_window == NULL)
gtk_combo_box_popdown (combo_box);
return TRUE;
}
static void
gtk_combo_box_list_position (GtkComboBox *combo_box,
gint *x,
gint *y,
gint *width,
gint *height)
{
GtkComboBoxPrivate *priv = combo_box->priv;
GtkAllocation content_allocation;
GdkDisplay *display;
GdkMonitor *monitor;
GdkRectangle area;
GtkRequisition popup_req;
GtkPolicyType hpolicy, vpolicy;
GdkWindow *window;
/* under windows, the drop down list is as wide as the combo box itself.
see bug #340204 */
GtkWidget *widget = GTK_WIDGET (combo_box);
gtk_css_gadget_get_content_allocation (priv->gadget, &content_allocation, NULL);
*x = content_allocation.x;
*y = content_allocation.y;
*width = content_allocation.width;
window = gtk_widget_get_window (GTK_WIDGET (combo_box));
gdk_window_get_root_coords (window, *x, *y, x, y);
hpolicy = vpolicy = GTK_POLICY_NEVER;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
if (priv->popup_fixed_width)
{
gtk_widget_get_preferred_size (priv->scrolled_window, &popup_req, NULL);
if (popup_req.width > *width)
{
hpolicy = GTK_POLICY_ALWAYS;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
}
}
else
{
/* XXX This code depends on treeviews properly reporting their natural width
* list-mode menus won't fill up to their natural width until then */
gtk_widget_get_preferred_size (priv->scrolled_window, NULL, &popup_req);
if (popup_req.width > *width)
{
hpolicy = GTK_POLICY_NEVER;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
*width = popup_req.width;
}
}
*height = popup_req.height;
display = gtk_widget_get_display (widget);
monitor = gdk_display_get_monitor_at_window (display, window);
gdk_monitor_get_workarea (monitor, &area);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
*x = *x + content_allocation.width - *width;
if (*x < area.x)
*x = area.x;
else if (*x + *width > area.x + area.width)
*x = area.x + area.width - *width;
if (*y + content_allocation.height + *height <= area.y + area.height)
*y += content_allocation.height;
else if (*y - *height >= area.y)
*y -= *height;
else if (area.y + area.height - (*y + content_allocation.height) > *y - area.y)
{
*y += content_allocation.height;
*height = area.y + area.height - *y;
}
else
{
*height = *y - area.y;
*y = area.y;
}
if (popup_req.height > *height)
{
vpolicy = GTK_POLICY_ALWAYS;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
}
}
/**
* 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.
*
* Since: 2.4
*/
void
gtk_combo_box_popup (GtkComboBox *combo_box)
{
g_return_if_fail (GTK_IS_COMBO_BOX (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 or dropdown list of @combo_box, the popup window
* will be grabbed so only @device and its associated pointer/keyboard
* are the only #GdkDevices able to send events to it.
*
* Since: 3.0
**/
void
gtk_combo_box_popup_for_device (GtkComboBox *combo_box,
GdkDevice *device)
{
GtkComboBoxPrivate *priv = combo_box->priv;
gint x, y, width, height;
GtkWidget *toplevel;
GdkDevice *pointer;
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;
if (priv->grab_pointer)
return;
if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
pointer = gdk_device_get_associated_device (device);
else
pointer = device;
if (GTK_IS_MENU (priv->popup_widget))
{
gtk_combo_box_menu_popup (combo_box, priv->trigger_event);
return;
}
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo_box));
if (GTK_IS_WINDOW (toplevel))
gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
GTK_WINDOW (priv->popup_window));
gtk_widget_show_all (priv->scrolled_window);
gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
gtk_widget_set_size_request (priv->popup_window, width, height);
gtk_window_move (GTK_WINDOW (priv->popup_window), x, y);
/* popup */
gtk_widget_show (priv->popup_window);
gtk_widget_grab_focus (priv->popup_window);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
TRUE);
if (!popup_grab_on_window (gtk_widget_get_window (priv->popup_window), pointer))
{
gtk_widget_hide (priv->popup_window);
return;
}
priv->grab_pointer = pointer;
g_signal_connect (priv->popup_window,
"grab-broken-event",
G_CALLBACK (gtk_combo_box_grab_broken_event),
combo_box);
}
static void
gtk_combo_box_real_popup (GtkComboBox *combo_box)
{
GdkDevice *device;
device = gtk_get_current_event_device ();
if (!device)
{
GdkDisplay *display;
/* No device was set, pick the first master device */
display = gtk_widget_get_display (GTK_WIDGET (combo_box));
device = gdk_seat_get_pointer (gdk_display_get_default_seat (display));
}
gtk_combo_box_popup_for_device (combo_box, device);
}
static gboolean
gtk_combo_box_real_popdown (GtkComboBox *combo_box)
{
if (combo_box->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.
*
* Since: 2.4
*/
void
gtk_combo_box_popdown (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = combo_box->priv;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (GTK_IS_MENU (priv->popup_widget))
{
gtk_menu_popdown (GTK_MENU (priv->popup_widget));
return;
}
if (!gtk_widget_get_realized (GTK_WIDGET (combo_box)))
return;
if (!gtk_widget_is_drawable (priv->popup_window))
return;
if (priv->grab_pointer)
gdk_seat_ungrab (gdk_device_get_seat (priv->grab_pointer));
gtk_widget_hide (priv->popup_window);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
FALSE);
if (priv->scroll_timer)
{
g_source_remove (priv->scroll_timer);
priv->scroll_timer = 0;
}
priv->grab_pointer = NULL;
}
static void
gtk_combo_box_unset_model (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = combo_box->priv;
if (priv->model)
{
g_signal_handler_disconnect (priv->model,
priv->inserted_id);
g_signal_handler_disconnect (priv->model,
priv->deleted_id);
g_signal_handler_disconnect (priv->model,
priv->reordered_id);
g_signal_handler_disconnect (priv->model,
priv->changed_id);
}
if (priv->model)
{
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,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (container);
GtkComboBoxPrivate *priv = combo_box->priv;
GtkWidget *child;
if (include_internals)
{
if (priv->box)
(* callback) (priv->box, callback_data);
}
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 = combo_box->priv;
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 = combo_box->priv;
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_event (GtkWidget *widget,
GdkEventScroll *event)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = combo_box->priv;
gboolean found;
GtkTreeIter iter;
GtkTreeIter new_iter;
if (!gtk_combo_box_get_active_iter (combo_box, &iter))
return TRUE;
if (event->direction == GDK_SCROLL_UP)
found = tree_prev (combo_box, priv->model,
&iter, &new_iter);
else
found = tree_next (combo_box, priv->model,
&iter, &new_iter);
if (found)
gtk_combo_box_set_active_iter (combo_box, &new_iter);
return TRUE;
}
/*
* menu style
*/
static gboolean
gtk_combo_box_row_separator_func (GtkTreeModel *model,
GtkTreeIter *iter,
GtkComboBox *combo)
{
GtkComboBoxPrivate *priv = combo->priv;
if (priv->row_separator_func)
return priv->row_separator_func (model, iter, priv->row_separator_data);
return FALSE;
}
static void
gtk_combo_box_menu_setup (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = combo_box->priv;
GtkWidget *menu;
g_signal_connect (priv->button, "button-press-event",
G_CALLBACK (gtk_combo_box_menu_button_press),
combo_box);
/* create our funky menu */
menu = _gtk_tree_menu_new_with_area (priv->area);
gtk_widget_set_name (menu, "gtk-combobox-popup-menu");
_gtk_tree_menu_set_model (GTK_TREE_MENU (menu), priv->model);
_gtk_tree_menu_set_wrap_width (GTK_TREE_MENU (menu), priv->wrap_width);
_gtk_tree_menu_set_row_span_column (GTK_TREE_MENU (menu), priv->row_column);
_gtk_tree_menu_set_column_span_column (GTK_TREE_MENU (menu), priv->col_column);
g_signal_connect (menu, "menu-activate",
G_CALLBACK (gtk_combo_box_menu_activate), combo_box);
/* Chain our row_separator_func through */
_gtk_tree_menu_set_row_separator_func (GTK_TREE_MENU (menu),
(GtkTreeViewRowSeparatorFunc)gtk_combo_box_row_separator_func,
combo_box, NULL);
g_signal_connect (menu, "key-press-event",
G_CALLBACK (gtk_combo_box_menu_key_press), combo_box);
gtk_combo_box_set_popup_widget (combo_box, menu);
}
static void
gtk_combo_box_menu_destroy (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv = combo_box->priv;
g_signal_handlers_disconnect_matched (priv->button,
G_SIGNAL_MATCH_DATA,
0, 0, NULL,
gtk_combo_box_menu_button_press, NULL);
g_signal_handlers_disconnect_matched (priv->popup_widget,
G_SIGNAL_MATCH_DATA,
0, 0, NULL,
gtk_combo_box_menu_activate, combo_box);
/* changing the popup window will unref the menu and the children */
}
/* callbacks */
static gboolean
gtk_combo_box_menu_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
GtkComboBoxPrivate *priv = combo_box->priv;
if (GTK_IS_MENU (priv->popup_widget) &&
event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY)
{
if (gtk_widget_get_focus_on_click (GTK_WIDGET (combo_box)) &&
!gtk_widget_has_focus (priv->button))
gtk_widget_grab_focus (priv->button);
gtk_combo_box_menu_popup (combo_box, (const GdkEvent *) event);
return TRUE;
}
return FALSE;
}
static void
gtk_combo_box_menu_activate (GtkWidget *menu,
const gchar *path,
GtkComboBox *combo_box)
{
GtkTreeIter iter;
if (gtk_tree_model_get_iter_from_string (combo_box->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 = combo_box->priv;
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 = combo_box->priv;
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 = combo_box->priv;
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_press (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
if (!gtk_bindings_activate_event (G_OBJECT (widget), event))
{
/* The menu hasn't managed the
* event, forward it to the combobox
*/
gtk_bindings_activate_event (G_OBJECT (combo_box), event);
}
return TRUE;
}
/*
* GtkCellLayout implementation
*/
static GtkCellArea *
gtk_combo_box_cell_layout_get_area (GtkCellLayout *cell_layout)
{
GtkComboBox *combo = GTK_COMBO_BOX (cell_layout);
GtkComboBoxPrivate *priv = combo->priv;
if (G_UNLIKELY (!priv->area))
{
priv->area = gtk_cell_area_box_new ();
g_object_ref_sink (priv->area);
}
return priv->area;
}
/*
* public API
*/
/**
* gtk_combo_box_new:
*
* Creates a new empty #GtkComboBox.
*
* Returns: A new #GtkComboBox.
*
* Since: 2.4
*/
GtkWidget *
gtk_combo_box_new (void)
{
return g_object_new (GTK_TYPE_COMBO_BOX, NULL);
}
/**
* gtk_combo_box_new_with_area:
* @area: the #GtkCellArea to use to layout cell renderers
*
* Creates a new empty #GtkComboBox using @area to layout cells.
*
* Returns: A new #GtkComboBox.
*/
GtkWidget *
gtk_combo_box_new_with_area (GtkCellArea *area)
{
return g_object_new (GTK_TYPE_COMBO_BOX, "cell-area", area, NULL);
}
/**
* gtk_combo_box_new_with_area_and_entry:
* @area: the #GtkCellArea to use to layout cell renderers
*
* Creates a new empty #GtkComboBox with an entry.
*
* The new combo box will use @area to layout cells.
*
* Returns: A new #GtkComboBox.
*/
GtkWidget *
gtk_combo_box_new_with_area_and_entry (GtkCellArea *area)
{
return g_object_new (GTK_TYPE_COMBO_BOX,
"has-entry", TRUE,
"cell-area", area,
NULL);
}
/**
* gtk_combo_box_new_with_entry:
*
* Creates a new empty #GtkComboBox with an entry.
*
* Returns: A new #GtkComboBox.
*
* Since: 2.24
*/
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.
*
* Since: 2.4
*/
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
*
* Since: 2.24
*/
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_wrap_width:
* @combo_box: A #GtkComboBox
*
* Returns the wrap width which is used to determine the number of columns
* for the popup menu. If the wrap width is larger than 1, the combo box
* is in table mode.
*
* Returns: the wrap width.
*
* Since: 2.6
*/
gint
gtk_combo_box_get_wrap_width (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
return combo_box->priv->wrap_width;
}
/**
* gtk_combo_box_set_wrap_width:
* @combo_box: A #GtkComboBox
* @width: Preferred number of columns
*
* Sets the wrap width of @combo_box to be @width. The wrap width is basically
* the preferred number of columns when you want the popup to be layed out
* in a table.
*
* Since: 2.4
*/
void
gtk_combo_box_set_wrap_width (GtkComboBox *combo_box,
gint width)
{
GtkComboBoxPrivate *priv;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (width >= 0);
priv = combo_box->priv;
if (width != priv->wrap_width)
{
priv->wrap_width = width;
gtk_combo_box_check_appearance (combo_box);
g_object_notify (G_OBJECT (combo_box), "wrap-width");
}
}
/**
* gtk_combo_box_get_row_span_column:
* @combo_box: A #GtkComboBox
*
* Returns the column with row span information for @combo_box.
*
* Returns: the row span column.
*
* Since: 2.6
*/
gint
gtk_combo_box_get_row_span_column (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
return combo_box->priv->row_column;
}
/**
* gtk_combo_box_set_row_span_column:
* @combo_box: A #GtkComboBox.
* @row_span: A column in the model passed during construction.
*
* Sets the column with row span information for @combo_box to be @row_span.
* The row span column contains integers which indicate how many rows
* an item should span.
*
* Since: 2.4
*/
void
gtk_combo_box_set_row_span_column (GtkComboBox *combo_box,
gint row_span)
{
GtkComboBoxPrivate *priv;
gint col;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
priv = combo_box->priv;
col = gtk_tree_model_get_n_columns (priv->model);
g_return_if_fail (row_span >= -1 && row_span < col);
if (row_span != priv->row_column)
{
priv->row_column = row_span;
if (GTK_IS_TREE_MENU (priv->popup_widget))
_gtk_tree_menu_set_row_span_column (GTK_TREE_MENU (priv->popup_widget), priv->row_column);
g_object_notify (G_OBJECT (combo_box), "row-span-column");
}
}
/**
* gtk_combo_box_get_column_span_column:
* @combo_box: A #GtkComboBox
*
* Returns the column with column span information for @combo_box.
*
* Returns: the column span column.
*
* Since: 2.6
*/
gint
gtk_combo_box_get_column_span_column (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
return combo_box->priv->col_column;
}
/**
* gtk_combo_box_set_column_span_column:
* @combo_box: A #GtkComboBox
* @column_span: A column in the model passed during construction
*
* Sets the column with column span information for @combo_box to be
* @column_span. The column span column contains integers which indicate
* how many columns an item should span.
*
* Since: 2.4
*/
void
gtk_combo_box_set_column_span_column (GtkComboBox *combo_box,
gint column_span)
{
GtkComboBoxPrivate *priv;
gint col;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
priv = combo_box->priv;
col = gtk_tree_model_get_n_columns (priv->model);
g_return_if_fail (column_span >= -1 && column_span < col);
if (column_span != priv->col_column)
{
priv->col_column = column_span;
if (GTK_IS_TREE_MENU (priv->popup_widget))
_gtk_tree_menu_set_column_span_column (GTK_TREE_MENU (priv->popup_widget), priv->col_column);
g_object_notify (G_OBJECT (combo_box), "column-span-column");
}
}
/**
* 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.
*
* Since: 2.4
*/
gint
gtk_combo_box_get_active (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv;
gint result;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
priv = combo_box->priv;
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.
*
* Since: 2.4
*/
void
gtk_combo_box_set_active (GtkComboBox *combo_box,
gint index_)
{
GtkComboBoxPrivate *priv;
GtkTreePath *path = NULL;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (index_ >= -1);
priv = combo_box->priv;
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 = combo_box->priv;
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)
{
GtkMenu *menu = GTK_MENU (priv->popup_widget);
if (GTK_IS_MENU (menu))
gtk_menu_set_active (menu, -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);
if (GTK_IS_MENU (priv->popup_widget))
{
/* FIXME handle nested menus better */
gtk_menu_set_active (GTK_MENU (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): The uninitialized #GtkTreeIter
*
* Sets @iter to point to the current active item, if it exists.
*
* Returns: %TRUE, if @iter was set
*
* Since: 2.4
*/
gboolean
gtk_combo_box_get_active_iter (GtkComboBox *combo_box,
GtkTreeIter *iter)
{
GtkComboBoxPrivate *priv;
GtkTreePath *path;
gboolean result;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
priv = combo_box->priv;
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.
*
* Since: 2.4
*/
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.
*
* Since: 2.4
*/
void
gtk_combo_box_set_model (GtkComboBox *combo_box,
GtkTreeModel *model)
{
GtkComboBoxPrivate *priv;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
priv = combo_box->priv;
if (model == combo_box->priv->model)
return;
gtk_combo_box_unset_model (combo_box);
if (model == NULL)
goto out;
priv->model = model;
g_object_ref (priv->model);
priv->inserted_id =
g_signal_connect (priv->model, "row-inserted",
G_CALLBACK (gtk_combo_box_model_row_inserted),
combo_box);
priv->deleted_id =
g_signal_connect (priv->model, "row-deleted",
G_CALLBACK (gtk_combo_box_model_row_deleted),
combo_box);
priv->reordered_id =
g_signal_connect (priv->model, "rows-reordered",
G_CALLBACK (gtk_combo_box_model_rows_reordered),
combo_box);
priv->changed_id =
g_signal_connect (priv->model, "row-changed",
G_CALLBACK (gtk_combo_box_model_row_changed),
combo_box);
if (GTK_IS_TREE_MENU (priv->popup_widget))
{
/* menu mode */
_gtk_tree_menu_set_model (GTK_TREE_MENU (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.
*
* Since: 2.4
*/
GtkTreeModel *
gtk_combo_box_get_model (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
return combo_box->priv->model;
}
static void
gtk_combo_box_real_move_active (GtkComboBox *combo_box,
GtkScrollType scroll)
{
GtkComboBoxPrivate *priv = combo_box->priv;
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;
}
/* else fall through */
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;
}
/* else fall through */
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;
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);
if (combo_box->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 (combo_box->priv->button);
return TRUE;
}
static void
gtk_combo_box_grab_focus (GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
if (combo_box->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 (combo_box->priv->button);
}
static void
gtk_combo_box_destroy (GtkWidget *widget)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
GtkComboBoxPrivate *priv = combo_box->priv;
if (priv->popup_idle_id > 0)
{
g_source_remove (priv->popup_idle_id);
priv->popup_idle_id = 0;
}
g_clear_pointer (&priv->trigger_event, gdk_event_free);
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->cell_view = NULL;
_gtk_bin_set_child (GTK_BIN (combo_box), NULL);
}
gtk_combo_box_popdown (combo_box);
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_entry_set_text (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 = combo_box->priv;
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 = combo_box->priv;
G_OBJECT_CLASS (gtk_combo_box_parent_class)->constructed (object);
if (!priv->area)
{
priv->area = gtk_cell_area_box_new ();
g_object_ref_sink (priv->area);
}
gtk_combo_box_create_child (combo_box);
gtk_combo_box_check_appearance (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 = combo_box->priv;
if (GTK_IS_MENU (priv->popup_widget))
{
gtk_combo_box_menu_destroy (combo_box);
gtk_menu_detach (GTK_MENU (priv->popup_widget));
priv->popup_widget = NULL;
}
if (priv->area)
{
g_object_unref (priv->area);
priv->area = NULL;
}
if (priv->popup_window)
{
gtk_widget_destroy (priv->popup_window);
priv->popup_window = NULL;
}
gtk_combo_box_unset_model (combo_box);
G_OBJECT_CLASS (gtk_combo_box_parent_class)->dispose (object);
}
static void
gtk_combo_box_finalize (GObject *object)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (object);
g_clear_object (&combo_box->priv->gadget);
G_OBJECT_CLASS (gtk_combo_box_parent_class)->finalize (object);
}
static gboolean
gtk_cell_editable_key_press (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (data);
if (event->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 (event->keyval == GDK_KEY_Return ||
event->keyval == GDK_KEY_ISO_Enter ||
event->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 = combo_box->priv;
GtkWidget *child;
priv->is_cell_renderer = TRUE;
if (priv->cell_view)
{
g_signal_connect_object (priv->button, "key-press-event",
G_CALLBACK (gtk_cell_editable_key_press),
cell_editable, 0);
gtk_widget_grab_focus (priv->button);
}
else
{
child = gtk_bin_get_child (GTK_BIN (combo_box));
g_signal_connect_object (child, "key-press-event",
G_CALLBACK (gtk_cell_editable_key_press),
cell_editable, 0);
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.
*
* Since: 3.0
**/
void
gtk_combo_box_set_popup_fixed_width (GtkComboBox *combo_box,
gboolean fixed)
{
GtkComboBoxPrivate *priv;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
priv = combo_box->priv;
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
*
* Since: 3.0
**/
gboolean
gtk_combo_box_get_popup_fixed_width (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
return combo_box->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.
*
* Since: 2.6
*/
AtkObject*
gtk_combo_box_get_popup_accessible (GtkComboBox *combo_box)
{
GtkComboBoxPrivate *priv;
AtkObject *atk_obj;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
priv = combo_box->priv;
if (priv->popup_widget)
{
atk_obj = gtk_widget_get_accessible (priv->popup_widget);
return atk_obj;
}
return NULL;
}
/**
* gtk_combo_box_get_row_separator_func: (skip)
* @combo_box: a #GtkComboBox
*
* Returns the current row separator function.
*
* Returns: the current row separator function.
*
* Since: 2.6
*/
GtkTreeViewRowSeparatorFunc
gtk_combo_box_get_row_separator_func (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
return combo_box->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.
*
* Since: 2.6
*/
void
gtk_combo_box_set_row_separator_func (GtkComboBox *combo_box,
GtkTreeViewRowSeparatorFunc func,
gpointer data,
GDestroyNotify destroy)
{
GtkComboBoxPrivate *priv;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
priv = combo_box->priv;
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;
/* Provoke the underlying menu to rebuild themselves with the new separator func */
if (GTK_IS_TREE_MENU (priv->popup_widget))
{
_gtk_tree_menu_set_model (GTK_TREE_MENU (priv->popup_widget), NULL);
_gtk_tree_menu_set_model (GTK_TREE_MENU (priv->popup_widget), priv->model);
}
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).
*
* Since: 2.14
**/
void
gtk_combo_box_set_button_sensitivity (GtkComboBox *combo_box,
GtkSensitivityType sensitivity)
{
GtkComboBoxPrivate *priv;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
priv = combo_box->priv;
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.
*
* Since: 2.14
**/
GtkSensitivityType
gtk_combo_box_get_button_sensitivity (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
return combo_box->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.
*
* Since: 2.24
**/
gboolean
gtk_combo_box_get_has_entry (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
return combo_box->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.
*
* Since: 2.24
*/
void
gtk_combo_box_set_entry_text_column (GtkComboBox *combo_box,
gint text_column)
{
GtkComboBoxPrivate *priv = combo_box->priv;
GtkTreeModel *model;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
model = gtk_combo_box_get_model (combo_box);
g_return_if_fail (text_column >= 0);
g_return_if_fail (model == NULL || text_column < gtk_tree_model_get_n_columns (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.
*
* Since: 2.24
*/
gint
gtk_combo_box_get_entry_text_column (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
return combo_box->priv->text_column;
}
static void
gtk_combo_box_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (GTK_IS_WIDGET (child))
{
parent_buildable_iface->add_child (buildable, builder, child, type);
return;
}
_gtk_cell_layout_buildable_add_child (buildable, builder, child, type);
}
static gboolean
gtk_combo_box_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *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);
if (combo_box->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.
*
* Since: 3.0
*/
void
gtk_combo_box_set_id_column (GtkComboBox *combo_box,
gint id_column)
{
GtkComboBoxPrivate *priv;
GtkTreeModel *model;
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
priv = combo_box->priv;
if (id_column != priv->id_column)
{
model = gtk_combo_box_get_model (combo_box);
g_return_if_fail (id_column >= 0);
g_return_if_fail (model == NULL ||
id_column < gtk_tree_model_get_n_columns (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.
*
* Since: 3.0
*/
gint
gtk_combo_box_get_id_column (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
return combo_box->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
*
* Since: 3.0
**/
const gchar *
gtk_combo_box_get_active_id (GtkComboBox *combo_box)
{
GtkTreeModel *model;
GtkTreeIter iter;
gint column;
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
column = combo_box->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.
*
* Since: 3.0
**/
gboolean
gtk_combo_box_set_active_id (GtkComboBox *combo_box,
const gchar *active_id)
{
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 = combo_box->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)
{
if (combo->priv->popup_window)
return combo->priv->popup_window;
else
return combo->priv->popup_widget;
}
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