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gtk/gtk/gtkmenushell.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
/**
* SECTION:gtkmenushell
* @Title: GtkMenuShell
* @Short_description: A base class for menu objects
*
* A #GtkMenuShell is the abstract base class used to derive the
* #GtkMenu and #GtkMenuBar subclasses.
*
* A #GtkMenuShell is a container of #GtkMenuItem objects arranged
* in a list which can be navigated, selected, and activated by the
* user to perform application functions. A #GtkMenuItem can have a
* submenu associated with it, allowing for nested hierarchical menus.
*
* # Terminology
*
* A menu item can be “selected”, this means that it is displayed
* in the prelight state, and if it has a submenu, that submenu
* will be popped up.
*
* A menu is “active” when it is visible onscreen and the user
* is selecting from it. A menubar is not active until the user
* clicks on one of its menuitems. When a menu is active,
* passing the mouse over a submenu will pop it up.
*
* There is also is a concept of the current menu and a current
* menu item. The current menu item is the selected menu item
* that is furthest down in the hierarchy. (Every active menu shell
* does not necessarily contain a selected menu item, but if
* it does, then the parent menu shell must also contain
* a selected menu item.) The current menu is the menu that
* contains the current menu item. It will always have a GTK
* grab and receive all key presses.
*/
#include "config.h"
#include "gtkbindings.h"
#include "gtkkeyhash.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenubar.h"
#include "gtkmenuitemprivate.h"
#include "gtkmenushellprivate.h"
#include "gtkmnemonichash.h"
#include "gtkwindow.h"
#include "gtkwindowprivate.h"
#include "gtkprivate.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
#include "gtkmodelmenuitem.h"
#include "gtkwidgetprivate.h"
#include "gtklabelprivate.h"
#include "deprecated/gtktearoffmenuitem.h"
#include "a11y/gtkmenushellaccessible.h"
#define MENU_SHELL_TIMEOUT 500
#define MENU_POPUP_DELAY 225
#define MENU_POPDOWN_DELAY 1000
#define PACK_DIRECTION(m) \
(GTK_IS_MENU_BAR (m) \
? gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (m)) \
: GTK_PACK_DIRECTION_LTR)
enum {
DEACTIVATE,
SELECTION_DONE,
MOVE_CURRENT,
ACTIVATE_CURRENT,
CANCEL,
CYCLE_FOCUS,
MOVE_SELECTED,
INSERT,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_TAKE_FOCUS
};
static void gtk_menu_shell_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_menu_shell_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_menu_shell_realize (GtkWidget *widget);
static void gtk_menu_shell_finalize (GObject *object);
static void gtk_menu_shell_dispose (GObject *object);
static gint gtk_menu_shell_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_menu_shell_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_menu_shell_key_press (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_menu_shell_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_menu_shell_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static void gtk_menu_shell_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen);
static gboolean gtk_menu_shell_grab_broken (GtkWidget *widget,
GdkEventGrabBroken *event);
static void gtk_menu_shell_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_menu_shell_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_menu_shell_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_menu_shell_real_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position);
static void gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell);
static gint gtk_menu_shell_is_item (GtkMenuShell *menu_shell,
GtkWidget *child);
static GtkWidget *gtk_menu_shell_get_item (GtkMenuShell *menu_shell,
GdkEvent *event);
static GType gtk_menu_shell_child_type (GtkContainer *container);
static void gtk_menu_shell_real_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item);
static gboolean gtk_menu_shell_select_submenu_first (GtkMenuShell *menu_shell);
static void gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction);
static void gtk_real_menu_shell_activate_current (GtkMenuShell *menu_shell,
gboolean force_hide);
static void gtk_real_menu_shell_cancel (GtkMenuShell *menu_shell);
static void gtk_real_menu_shell_cycle_focus (GtkMenuShell *menu_shell,
GtkDirectionType dir);
static void gtk_menu_shell_reset_key_hash (GtkMenuShell *menu_shell);
static gboolean gtk_menu_shell_activate_mnemonic (GtkMenuShell *menu_shell,
GdkEventKey *event);
static gboolean gtk_menu_shell_real_move_selected (GtkMenuShell *menu_shell,
gint distance);
static guint menu_shell_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (GtkMenuShell, gtk_menu_shell, GTK_TYPE_CONTAINER)
static void
gtk_menu_shell_class_init (GtkMenuShellClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkBindingSet *binding_set;
object_class = (GObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
container_class = (GtkContainerClass*) klass;
object_class->set_property = gtk_menu_shell_set_property;
object_class->get_property = gtk_menu_shell_get_property;
object_class->finalize = gtk_menu_shell_finalize;
object_class->dispose = gtk_menu_shell_dispose;
widget_class->realize = gtk_menu_shell_realize;
widget_class->button_press_event = gtk_menu_shell_button_press;
widget_class->button_release_event = gtk_menu_shell_button_release;
widget_class->grab_broken_event = gtk_menu_shell_grab_broken;
widget_class->key_press_event = gtk_menu_shell_key_press;
widget_class->enter_notify_event = gtk_menu_shell_enter_notify;
widget_class->leave_notify_event = gtk_menu_shell_leave_notify;
widget_class->screen_changed = gtk_menu_shell_screen_changed;
container_class->add = gtk_menu_shell_add;
container_class->remove = gtk_menu_shell_remove;
container_class->forall = gtk_menu_shell_forall;
container_class->child_type = gtk_menu_shell_child_type;
klass->submenu_placement = GTK_TOP_BOTTOM;
klass->deactivate = gtk_real_menu_shell_deactivate;
klass->selection_done = NULL;
klass->move_current = gtk_real_menu_shell_move_current;
klass->activate_current = gtk_real_menu_shell_activate_current;
klass->cancel = gtk_real_menu_shell_cancel;
klass->select_item = gtk_menu_shell_real_select_item;
klass->insert = gtk_menu_shell_real_insert;
klass->move_selected = gtk_menu_shell_real_move_selected;
/**
* GtkMenuShell::deactivate:
* @menushell: the object which received the signal
*
* This signal is emitted when a menu shell is deactivated.
*/
menu_shell_signals[DEACTIVATE] =
g_signal_new (I_("deactivate"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuShellClass, deactivate),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkMenuShell::selection-done:
* @menushell: the object which received the signal
*
* This signal is emitted when a selection has been
* completed within a menu shell.
*/
menu_shell_signals[SELECTION_DONE] =
g_signal_new (I_("selection-done"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuShellClass, selection_done),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkMenuShell::move-current:
* @menushell: the object which received the signal
* @direction: the direction to move
*
* An keybinding signal which moves the current menu item
* in the direction specified by @direction.
*/
menu_shell_signals[MOVE_CURRENT] =
g_signal_new (I_("move-current"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkMenuShellClass, move_current),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_MENU_DIRECTION_TYPE);
/**
* GtkMenuShell::activate-current:
* @menushell: the object which received the signal
* @force_hide: if %TRUE, hide the menu after activating the menu item
*
* An action signal that activates the current menu item within
* the menu shell.
*/
menu_shell_signals[ACTIVATE_CURRENT] =
g_signal_new (I_("activate-current"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkMenuShellClass, activate_current),
NULL, NULL,
_gtk_marshal_VOID__BOOLEAN,
G_TYPE_NONE, 1,
G_TYPE_BOOLEAN);
/**
* GtkMenuShell::cancel:
* @menushell: the object which received the signal
*
* An action signal which cancels the selection within the menu shell.
* Causes the #GtkMenuShell::selection-done signal to be emitted.
*/
menu_shell_signals[CANCEL] =
g_signal_new (I_("cancel"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkMenuShellClass, cancel),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkMenuShell::cycle-focus:
* @menushell: the object which received the signal
* @direction: the direction to cycle in
*
* A keybinding signal which moves the focus in the
* given @direction.
*/
menu_shell_signals[CYCLE_FOCUS] =
g_signal_new_class_handler (I_("cycle-focus"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_real_menu_shell_cycle_focus),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_DIRECTION_TYPE);
/**
* GtkMenuShell::move-selected:
* @menu_shell: the object on which the signal is emitted
* @distance: +1 to move to the next item, -1 to move to the previous
*
* The ::move-selected signal is emitted to move the selection to
* another item.
*
* Returns: %TRUE to stop the signal emission, %FALSE to continue
*
* Since: 2.12
*/
menu_shell_signals[MOVE_SELECTED] =
g_signal_new (I_("move-selected"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkMenuShellClass, move_selected),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__INT,
G_TYPE_BOOLEAN, 1,
G_TYPE_INT);
/**
* GtkMenuShell::insert:
* @menu_shell: the object on which the signal is emitted
* @child: the #GtkMenuItem that is being inserted
* @position: the position at which the insert occurs
*
* The ::insert signal is emitted when a new #GtkMenuItem is added to
* a #GtkMenuShell. A separate signal is used instead of
* GtkContainer::add because of the need for an additional position
* parameter.
*
* The inverse of this signal is the GtkContainer::removed signal.
*
* Since: 3.2
**/
menu_shell_signals[INSERT] =
g_signal_new (I_("insert"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuShellClass, insert),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_INT,
G_TYPE_NONE, 2, GTK_TYPE_WIDGET, G_TYPE_INT);
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Escape, 0,
"cancel", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Return, 0,
"activate-current", 1,
G_TYPE_BOOLEAN,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_ISO_Enter, 0,
"activate-current", 1,
G_TYPE_BOOLEAN,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Enter, 0,
"activate-current", 1,
G_TYPE_BOOLEAN,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_space, 0,
"activate-current", 1,
G_TYPE_BOOLEAN,
FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Space, 0,
"activate-current", 1,
G_TYPE_BOOLEAN,
FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_F10, 0,
"cycle-focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_FORWARD);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_F10, GDK_SHIFT_MASK,
"cycle-focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_BACKWARD);
/**
* GtkMenuShell:take-focus:
*
* A boolean that determines whether the menu and its submenus grab the
* keyboard focus. See gtk_menu_shell_set_take_focus() and
* gtk_menu_shell_get_take_focus().
*
* Since: 2.8
**/
g_object_class_install_property (object_class,
PROP_TAKE_FOCUS,
g_param_spec_boolean ("take-focus",
P_("Take Focus"),
P_("A boolean that determines whether the menu grabs the keyboard focus"),
TRUE,
GTK_PARAM_READWRITE));
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_SHELL_ACCESSIBLE);
}
static GType
gtk_menu_shell_child_type (GtkContainer *container)
{
return GTK_TYPE_MENU_ITEM;
}
static void
gtk_menu_shell_init (GtkMenuShell *menu_shell)
{
menu_shell->priv = gtk_menu_shell_get_instance_private (menu_shell);
menu_shell->priv->take_focus = TRUE;
}
static void
gtk_menu_shell_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (object);
switch (prop_id)
{
case PROP_TAKE_FOCUS:
gtk_menu_shell_set_take_focus (menu_shell, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_shell_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (object);
switch (prop_id)
{
case PROP_TAKE_FOCUS:
g_value_set_boolean (value, gtk_menu_shell_get_take_focus (menu_shell));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_shell_finalize (GObject *object)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (object);
GtkMenuShellPrivate *priv = menu_shell->priv;
if (priv->mnemonic_hash)
_gtk_mnemonic_hash_free (priv->mnemonic_hash);
if (priv->key_hash)
_gtk_key_hash_free (priv->key_hash);
G_OBJECT_CLASS (gtk_menu_shell_parent_class)->finalize (object);
}
static void
gtk_menu_shell_dispose (GObject *object)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (object);
g_clear_pointer (&menu_shell->priv->tracker, gtk_menu_tracker_free);
gtk_menu_shell_deactivate (menu_shell);
G_OBJECT_CLASS (gtk_menu_shell_parent_class)->dispose (object);
}
/**
* gtk_menu_shell_append:
* @menu_shell: a #GtkMenuShell
* @child: (type Gtk.MenuItem): The #GtkMenuItem to add
*
* Adds a new #GtkMenuItem to the end of the menu shell's
* item list.
*/
void
gtk_menu_shell_append (GtkMenuShell *menu_shell,
GtkWidget *child)
{
gtk_menu_shell_insert (menu_shell, child, -1);
}
/**
* gtk_menu_shell_prepend:
* @menu_shell: a #GtkMenuShell
* @child: The #GtkMenuItem to add
*
* Adds a new #GtkMenuItem to the beginning of the menu shell's
* item list.
*/
void
gtk_menu_shell_prepend (GtkMenuShell *menu_shell,
GtkWidget *child)
{
gtk_menu_shell_insert (menu_shell, child, 0);
}
/**
* gtk_menu_shell_insert:
* @menu_shell: a #GtkMenuShell
* @child: The #GtkMenuItem to add
* @position: The position in the item list where @child
* is added. Positions are numbered from 0 to n-1
*
* Adds a new #GtkMenuItem to the menu shell’s item list
* at the position indicated by @position.
*/
void
gtk_menu_shell_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_MENU_ITEM (child));
g_signal_emit (menu_shell, menu_shell_signals[INSERT], 0, child, position);
}
static void
gtk_menu_shell_real_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
priv->children = g_list_insert (priv->children, child, position);
gtk_widget_set_parent (child, GTK_WIDGET (menu_shell));
}
/**
* gtk_menu_shell_deactivate:
* @menu_shell: a #GtkMenuShell
*
* Deactivates the menu shell.
*
* Typically this results in the menu shell being erased
* from the screen.
*/
void
gtk_menu_shell_deactivate (GtkMenuShell *menu_shell)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
if (menu_shell->priv->active)
g_signal_emit (menu_shell, menu_shell_signals[DEACTIVATE], 0);
}
static void
gtk_menu_shell_realize (GtkWidget *widget)
{
GtkAllocation allocation;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
GtkStyleContext *context;
gtk_widget_set_realized (widget, TRUE);
gtk_widget_get_allocation (widget, &allocation);
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_KEY_PRESS_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gtk_widget_set_window (widget, window);
gtk_widget_register_window (widget, window);
context = gtk_widget_get_style_context (widget);
gtk_style_context_set_background (context, window);
}
static void
gtk_menu_shell_activate (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
if (!priv->active)
{
GdkDevice *device;
device = gtk_get_current_event_device ();
_gtk_menu_shell_set_grab_device (menu_shell, device);
gtk_device_grab_add (GTK_WIDGET (menu_shell), device, TRUE);
priv->have_grab = TRUE;
priv->active = TRUE;
}
}
static gint
gtk_menu_shell_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkMenuShell *menu_shell;
GtkMenuShellPrivate *priv;
GtkWidget *menu_item;
GtkWidget *parent;
if (event->type != GDK_BUTTON_PRESS)
return FALSE;
menu_shell = GTK_MENU_SHELL (widget);
priv = menu_shell->priv;
if (priv->parent_menu_shell)
return gtk_widget_event (priv->parent_menu_shell, (GdkEvent*) event);
menu_item = gtk_menu_shell_get_item (menu_shell, (GdkEvent *)event);
if (menu_item && _gtk_menu_item_is_selectable (menu_item))
{
parent = gtk_widget_get_parent (menu_item);
if (menu_item != GTK_MENU_SHELL (parent)->priv->active_menu_item)
{
/* select the menu item *before* activating the shell, so submenus
* which might be open are closed the friendly way. If we activate
* (and thus grab) this menu shell first, we might get grab_broken
* events which will close the entire menu hierarchy. Selecting the
* menu item also fixes up the state as if enter_notify() would
* have run before (which normally selects the item).
*/
if (GTK_MENU_SHELL_GET_CLASS (parent)->submenu_placement != GTK_TOP_BOTTOM)
gtk_menu_shell_select_item (GTK_MENU_SHELL (parent), menu_item);
}
}
if (!priv->active || !priv->button)
{
gboolean initially_active = priv->active;
priv->button = event->button;
if (menu_item)
{
if (_gtk_menu_item_is_selectable (menu_item) &&
gtk_widget_get_parent (menu_item) == widget &&
menu_item != priv->active_menu_item)
{
gtk_menu_shell_activate (menu_shell);
priv->button = event->button;
if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement == GTK_TOP_BOTTOM)
{
priv->activate_time = event->time;
gtk_menu_shell_select_item (menu_shell, menu_item);
}
}
}
else
{
if (!initially_active)
{
gtk_menu_shell_deactivate (menu_shell);
return FALSE;
}
}
}
else
{
widget = gtk_get_event_widget ((GdkEvent*) event);
if (widget == GTK_WIDGET (menu_shell))
{
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
}
if (menu_item &&
_gtk_menu_item_is_selectable (menu_item) &&
GTK_MENU_ITEM (menu_item)->priv->submenu != NULL &&
!gtk_widget_get_visible (GTK_MENU_ITEM (menu_item)->priv->submenu))
{
_gtk_menu_item_popup_submenu (menu_item, FALSE);
priv->activated_submenu = TRUE;
}
return TRUE;
}
static gboolean
gtk_menu_shell_grab_broken (GtkWidget *widget,
GdkEventGrabBroken *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkMenuShellPrivate *priv = menu_shell->priv;
if (priv->have_xgrab && event->grab_window == NULL)
{
/* Unset the active menu item so gtk_menu_popdown() doesn't see it. */
gtk_menu_shell_deselect (menu_shell);
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
return TRUE;
}
static gint
gtk_menu_shell_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkMenuShellPrivate *priv = menu_shell->priv;
if (priv->parent_menu_shell &&
(event->time - GTK_MENU_SHELL (priv->parent_menu_shell)->priv->activate_time) < MENU_SHELL_TIMEOUT)
{
/* The button-press originated in the parent menu bar and we are
* a pop-up menu. It was a quick press-and-release so we don't want
* to activate an item but we leave the popup in place instead.
* https://bugzilla.gnome.org/show_bug.cgi?id=703069
*/
GTK_MENU_SHELL (priv->parent_menu_shell)->priv->activate_time = 0;
return TRUE;
}
if (priv->active)
{
GtkWidget *menu_item;
gboolean deactivate = TRUE;
if (priv->button && (event->button != priv->button))
{
priv->button = 0;
if (priv->parent_menu_shell)
return gtk_widget_event (priv->parent_menu_shell, (GdkEvent*) event);
}
priv->button = 0;
menu_item = gtk_menu_shell_get_item (menu_shell, (GdkEvent*) event);
if ((event->time - priv->activate_time) > MENU_SHELL_TIMEOUT)
{
if (menu_item && (priv->active_menu_item == menu_item) &&
_gtk_menu_item_is_selectable (menu_item))
{
GtkWidget *submenu = GTK_MENU_ITEM (menu_item)->priv->submenu;
if (submenu == NULL)
{
gtk_menu_shell_activate_item (menu_shell, menu_item, TRUE);
deactivate = FALSE;
}
else if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement != GTK_TOP_BOTTOM ||
priv->activated_submenu)
{
GTimeVal *popup_time;
gint64 usec_since_popup = 0;
popup_time = g_object_get_data (G_OBJECT (submenu),
"gtk-menu-exact-popup-time");
if (popup_time)
{
GTimeVal current_time;
g_get_current_time (&current_time);
usec_since_popup = ((gint64) current_time.tv_sec * 1000 * 1000 +
(gint64) current_time.tv_usec -
(gint64) popup_time->tv_sec * 1000 * 1000 -
(gint64) popup_time->tv_usec);
g_object_set_data (G_OBJECT (submenu),
"gtk-menu-exact-popup-time", NULL);
}
/* Only close the submenu on click if we opened the
* menu explicitly (usec_since_popup == 0) or
* enough time has passed since it was opened by
* GtkMenuItem's timeout (usec_since_popup > delay).
*/
if (!priv->activated_submenu &&
(usec_since_popup == 0 ||
usec_since_popup > MENU_POPDOWN_DELAY * 1000))
{
_gtk_menu_item_popdown_submenu (menu_item);
}
else
{
gtk_menu_item_select (GTK_MENU_ITEM (menu_item));
}
deactivate = FALSE;
}
}
else if (menu_item &&
!_gtk_menu_item_is_selectable (menu_item) &&
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement != GTK_TOP_BOTTOM)
{
deactivate = FALSE;
}
else if (priv->parent_menu_shell)
{
priv->active = TRUE;
gtk_widget_event (priv->parent_menu_shell, (GdkEvent*) event);
deactivate = FALSE;
}
/* If we ended up on an item with a submenu, leave the menu up. */
if (menu_item &&
(priv->active_menu_item == menu_item) &&
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement != GTK_TOP_BOTTOM)
{
deactivate = FALSE;
}
}
else /* a very fast press-release */
{
/* We only ever want to prevent deactivation on the first
* press/release. Setting the time to zero is a bit of a
* hack, since we could be being triggered in the first
* few fractions of a second after a server time wraparound.
* the chances of that happening are ~1/10^6, without
* serious harm if we lose.
*/
priv->activate_time = 0;
deactivate = FALSE;
}
if (deactivate)
{
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
priv->activated_submenu = FALSE;
}
return TRUE;
}
void
_gtk_menu_shell_set_keyboard_mode (GtkMenuShell *menu_shell,
gboolean keyboard_mode)
{
menu_shell->priv->keyboard_mode = keyboard_mode;
}
gboolean
_gtk_menu_shell_get_keyboard_mode (GtkMenuShell *menu_shell)
{
return menu_shell->priv->keyboard_mode;
}
void
_gtk_menu_shell_update_mnemonics (GtkMenuShell *menu_shell)
{
GtkMenuShell *target;
gboolean found;
gboolean mnemonics_visible;
target = menu_shell;
found = FALSE;
while (target)
{
GtkMenuShellPrivate *priv = target->priv;
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (target));
/* The idea with keyboard mode is that once you start using
* the keyboard to navigate the menus, we show mnemonics
* until the menu navigation is over. To that end, we spread
* the keyboard mode upwards in the menu hierarchy here.
* Also see gtk_menu_popup, where we inherit it downwards.
*/
if (menu_shell->priv->keyboard_mode)
target->priv->keyboard_mode = TRUE;
/* While navigating menus, the first parent menu with an active
* item is the one where mnemonics are effective, as can be seen
* in gtk_menu_shell_key_press below.
* We also show mnemonics in context menus. The grab condition is
* necessary to ensure we remove underlines from menu bars when
* dismissing menus.
*/
mnemonics_visible = target->priv->keyboard_mode &&
(((target->priv->active_menu_item || priv->in_unselectable_item) && !found) ||
(target == menu_shell &&
!target->priv->parent_menu_shell &&
gtk_widget_has_grab (GTK_WIDGET (target))));
/* While menus are up, only show underlines inside the menubar,
* not in the entire window.
*/
if (GTK_IS_MENU_BAR (target))
{
gtk_window_set_mnemonics_visible (GTK_WINDOW (toplevel), FALSE);
_gtk_label_mnemonics_visible_apply_recursively (GTK_WIDGET (target),
mnemonics_visible);
}
else
gtk_window_set_mnemonics_visible (GTK_WINDOW (toplevel), mnemonics_visible);
if (target->priv->active_menu_item || priv->in_unselectable_item)
found = TRUE;
target = GTK_MENU_SHELL (target->priv->parent_menu_shell);
}
}
static gint
gtk_menu_shell_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkMenuShellPrivate *priv = menu_shell->priv;
gboolean enable_mnemonics;
priv->keyboard_mode = TRUE;
if (!(priv->active_menu_item || priv->in_unselectable_item) &&
priv->parent_menu_shell)
return gtk_widget_event (priv->parent_menu_shell, (GdkEvent *)event);
if (gtk_bindings_activate_event (G_OBJECT (widget), event))
return TRUE;
g_object_get (gtk_widget_get_settings (widget),
"gtk-enable-mnemonics", &enable_mnemonics,
NULL);
if (enable_mnemonics)
return gtk_menu_shell_activate_mnemonic (menu_shell, event);
return FALSE;
}
static gint
gtk_menu_shell_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkMenuShellPrivate *priv = menu_shell->priv;
if (event->mode == GDK_CROSSING_GTK_GRAB ||
event->mode == GDK_CROSSING_GTK_UNGRAB ||
event->mode == GDK_CROSSING_STATE_CHANGED)
return TRUE;
if (priv->active)
{
GtkWidget *menu_item;
GtkWidget *parent;
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (!menu_item)
return TRUE;
if (GTK_IS_MENU_ITEM (menu_item) &&
!_gtk_menu_item_is_selectable (menu_item))
{
priv->in_unselectable_item = TRUE;
return TRUE;
}
parent = gtk_widget_get_parent (menu_item);
if (parent == widget &&
GTK_IS_MENU_ITEM (menu_item))
{
if (priv->ignore_enter)
return TRUE;
if (event->detail != GDK_NOTIFY_INFERIOR)
{
if ((gtk_widget_get_state_flags (menu_item) & GTK_STATE_FLAG_PRELIGHT) == 0)
gtk_menu_shell_select_item (menu_shell, menu_item);
/* If any mouse button is down, and there is a submenu
* that is not yet visible, activate it. It's sufficient
* to check for any button's mask (not only the one
* matching menu_shell->button), because there is no
* situation a mouse button could be pressed while
* entering a menu item where we wouldn't want to show
* its submenu.
*/
if ((event->state & (GDK_BUTTON1_MASK|GDK_BUTTON2_MASK|GDK_BUTTON3_MASK)) &&
GTK_MENU_ITEM (menu_item)->priv->submenu != NULL)
{
GTK_MENU_SHELL (parent)->priv->activated_submenu = TRUE;
if (!gtk_widget_get_visible (GTK_MENU_ITEM (menu_item)->priv->submenu))
{
GdkDevice *source_device;
source_device = gdk_event_get_source_device ((GdkEvent *) event);
if (gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN)
_gtk_menu_item_popup_submenu (menu_item, TRUE);
}
}
}
}
else if (priv->parent_menu_shell)
{
gtk_widget_event (priv->parent_menu_shell, (GdkEvent*) event);
}
}
return TRUE;
}
static gint
gtk_menu_shell_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
if (event->mode == GDK_CROSSING_GTK_GRAB ||
event->mode == GDK_CROSSING_GTK_UNGRAB ||
event->mode == GDK_CROSSING_STATE_CHANGED)
return TRUE;
if (gtk_widget_get_visible (widget))
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkWidget *event_widget = gtk_get_event_widget ((GdkEvent*) event);
GtkMenuItem *menu_item;
if (!event_widget || !GTK_IS_MENU_ITEM (event_widget))
return TRUE;
menu_item = GTK_MENU_ITEM (event_widget);
if (!_gtk_menu_item_is_selectable (event_widget))
{
priv->in_unselectable_item = TRUE;
return TRUE;
}
if ((priv->active_menu_item == event_widget) &&
(menu_item->priv->submenu == NULL))
{
if ((event->detail != GDK_NOTIFY_INFERIOR) &&
(gtk_widget_get_state_flags (GTK_WIDGET (menu_item)) & GTK_STATE_FLAG_PRELIGHT) != 0)
{
gtk_menu_shell_deselect (menu_shell);
}
}
else if (priv->parent_menu_shell)
{
gtk_widget_event (priv->parent_menu_shell, (GdkEvent*) event);
}
}
return TRUE;
}
static void
gtk_menu_shell_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen)
{
gtk_menu_shell_reset_key_hash (GTK_MENU_SHELL (widget));
}
static void
gtk_menu_shell_add (GtkContainer *container,
GtkWidget *widget)
{
gtk_menu_shell_append (GTK_MENU_SHELL (container), widget);
}
static void
gtk_menu_shell_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (container);
GtkMenuShellPrivate *priv = menu_shell->priv;
gint was_visible;
was_visible = gtk_widget_get_visible (widget);
priv->children = g_list_remove (priv->children, widget);
if (widget == priv->active_menu_item)
{
g_signal_emit_by_name (priv->active_menu_item, "deselect");
priv->active_menu_item = NULL;
}
gtk_widget_unparent (widget);
/* Queue resize regardless of gtk_widget_get_visible (container),
* since that's what is needed by toplevels.
*/
if (was_visible)
gtk_widget_queue_resize (GTK_WIDGET (container));
}
static void
gtk_menu_shell_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (container);
GtkWidget *child;
GList *children;
children = menu_shell->priv->children;
while (children)
{
child = children->data;
children = children->next;
(* callback) (child, callback_data);
}
}
static void
gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
if (priv->active)
{
priv->button = 0;
priv->active = FALSE;
priv->activate_time = 0;
if (priv->active_menu_item)
{
gtk_menu_item_deselect (GTK_MENU_ITEM (priv->active_menu_item));
priv->active_menu_item = NULL;
}
if (priv->have_grab)
{
priv->have_grab = FALSE;
gtk_device_grab_remove (GTK_WIDGET (menu_shell), priv->grab_pointer);
}
if (priv->have_xgrab)
{
GdkDevice *keyboard;
gdk_device_ungrab (priv->grab_pointer, GDK_CURRENT_TIME);
keyboard = gdk_device_get_associated_device (priv->grab_pointer);
if (keyboard)
gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
priv->have_xgrab = FALSE;
}
priv->keyboard_mode = FALSE;
_gtk_menu_shell_set_grab_device (menu_shell, NULL);
_gtk_menu_shell_update_mnemonics (menu_shell);
}
}
static gint
gtk_menu_shell_is_item (GtkMenuShell *menu_shell,
GtkWidget *child)
{
GtkWidget *parent;
g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE);
g_return_val_if_fail (child != NULL, FALSE);
parent = gtk_widget_get_parent (child);
while (GTK_IS_MENU_SHELL (parent))
{
if (parent == (GtkWidget*) menu_shell)
return TRUE;
parent = GTK_MENU_SHELL (parent)->priv->parent_menu_shell;
}
return FALSE;
}
static GtkWidget*
gtk_menu_shell_get_item (GtkMenuShell *menu_shell,
GdkEvent *event)
{
GtkWidget *menu_item;
menu_item = gtk_get_event_widget ((GdkEvent*) event);
while (menu_item && !GTK_IS_MENU_ITEM (menu_item))
menu_item = gtk_widget_get_parent (menu_item);
if (menu_item && gtk_menu_shell_is_item (menu_shell, menu_item))
return menu_item;
else
return NULL;
}
/* Handlers for action signals */
/**
* gtk_menu_shell_select_item:
* @menu_shell: a #GtkMenuShell
* @menu_item: The #GtkMenuItem to select
*
* Selects the menu item from the menu shell.
*/
void
gtk_menu_shell_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkMenuShellClass *class;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
class = GTK_MENU_SHELL_GET_CLASS (menu_shell);
if (class->select_item &&
!(priv->active &&
priv->active_menu_item == menu_item))
class->select_item (menu_shell, menu_item);
}
void _gtk_menu_item_set_placement (GtkMenuItem *menu_item,
GtkSubmenuPlacement placement);
static void
gtk_menu_shell_real_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkPackDirection pack_dir = PACK_DIRECTION (menu_shell);
if (priv->active_menu_item)
{
gtk_menu_item_deselect (GTK_MENU_ITEM (priv->active_menu_item));
priv->active_menu_item = NULL;
}
if (!_gtk_menu_item_is_selectable (menu_item))
{
priv->in_unselectable_item = TRUE;
_gtk_menu_shell_update_mnemonics (menu_shell);
return;
}
gtk_menu_shell_activate (menu_shell);
priv->active_menu_item = menu_item;
if (pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT)
_gtk_menu_item_set_placement (GTK_MENU_ITEM (priv->active_menu_item),
GTK_LEFT_RIGHT);
else
_gtk_menu_item_set_placement (GTK_MENU_ITEM (priv->active_menu_item),
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement);
gtk_menu_item_select (GTK_MENU_ITEM (priv->active_menu_item));
_gtk_menu_shell_update_mnemonics (menu_shell);
/* This allows the bizarre radio buttons-with-submenus-display-history
* behavior
*/
if (GTK_MENU_ITEM (priv->active_menu_item)->priv->submenu)
gtk_widget_activate (priv->active_menu_item);
}
/**
* gtk_menu_shell_deselect:
* @menu_shell: a #GtkMenuShell
*
* Deselects the currently selected item from the menu shell,
* if any.
*/
void
gtk_menu_shell_deselect (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
if (priv->active_menu_item)
{
gtk_menu_item_deselect (GTK_MENU_ITEM (priv->active_menu_item));
priv->active_menu_item = NULL;
_gtk_menu_shell_update_mnemonics (menu_shell);
}
}
/**
* gtk_menu_shell_activate_item:
* @menu_shell: a #GtkMenuShell
* @menu_item: the #GtkMenuItem to activate
* @force_deactivate: if %TRUE, force the deactivation of the
* menu shell after the menu item is activated
*
* Activates the menu item within the menu shell.
*/
void
gtk_menu_shell_activate_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item,
gboolean force_deactivate)
{
GSList *slist, *shells = NULL;
gboolean deactivate = force_deactivate;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
if (!deactivate)
deactivate = GTK_MENU_ITEM_GET_CLASS (menu_item)->hide_on_activate;
g_object_ref (menu_shell);
g_object_ref (menu_item);
if (deactivate)
{
GtkMenuShell *parent_menu_shell = menu_shell;
do
{
g_object_ref (parent_menu_shell);
shells = g_slist_prepend (shells, parent_menu_shell);
parent_menu_shell = (GtkMenuShell*) parent_menu_shell->priv->parent_menu_shell;
}
while (parent_menu_shell);
shells = g_slist_reverse (shells);
gtk_menu_shell_deactivate (menu_shell);
/* Flush the x-queue, so any grabs are removed and
* the menu is actually taken down
*/
gdk_display_sync (gtk_widget_get_display (menu_item));
}
gtk_widget_activate (menu_item);
for (slist = shells; slist; slist = slist->next)
{
g_signal_emit (slist->data, menu_shell_signals[SELECTION_DONE], 0);
g_object_unref (slist->data);
}
g_slist_free (shells);
g_object_unref (menu_shell);
g_object_unref (menu_item);
}
/* Distance should be +/- 1 */
static gboolean
gtk_menu_shell_real_move_selected (GtkMenuShell *menu_shell,
gint distance)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
if (priv->active_menu_item)
{
GList *node = g_list_find (priv->children, priv->active_menu_item);
GList *start_node = node;
if (distance > 0)
{
node = node->next;
while (node != start_node &&
(!node || !_gtk_menu_item_is_selectable (node->data)))
{
if (node)
node = node->next;
else
node = priv->children;
}
}
else
{
node = node->prev;
while (node != start_node &&
(!node || !_gtk_menu_item_is_selectable (node->data)))
{
if (node)
node = node->prev;
else
node = g_list_last (priv->children);
}
}
if (node)
gtk_menu_shell_select_item (menu_shell, node->data);
}
return TRUE;
}
/* Distance should be +/- 1 */
static void
gtk_menu_shell_move_selected (GtkMenuShell *menu_shell,
gint distance)
{
gboolean handled = FALSE;
g_signal_emit (menu_shell, menu_shell_signals[MOVE_SELECTED], 0,
distance, &handled);
}
/**
* gtk_menu_shell_select_first:
* @menu_shell: a #GtkMenuShell
* @search_sensitive: if %TRUE, search for the first selectable
* menu item, otherwise select nothing if
* the first item isn’t sensitive. This
* should be %FALSE if the menu is being
* popped up initially.
*
* Select the first visible or selectable child of the menu shell;
* don’t select tearoff items unless the only item is a tearoff
* item.
*
* Since: 2.2
*/
void
gtk_menu_shell_select_first (GtkMenuShell *menu_shell,
gboolean search_sensitive)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkWidget *to_select = NULL;
GList *tmp_list;
tmp_list = priv->children;
while (tmp_list)
{
GtkWidget *child = tmp_list->data;
if ((!search_sensitive && gtk_widget_get_visible (child)) ||
_gtk_menu_item_is_selectable (child))
{
to_select = child;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
if (!GTK_IS_TEAROFF_MENU_ITEM (child))
break;
G_GNUC_END_IGNORE_DEPRECATIONS
}
tmp_list = tmp_list->next;
}
if (to_select)
gtk_menu_shell_select_item (menu_shell, to_select);
}
void
_gtk_menu_shell_select_last (GtkMenuShell *menu_shell,
gboolean search_sensitive)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkWidget *to_select = NULL;
GList *tmp_list;
tmp_list = g_list_last (priv->children);
while (tmp_list)
{
GtkWidget *child = tmp_list->data;
if ((!search_sensitive && gtk_widget_get_visible (child)) ||
_gtk_menu_item_is_selectable (child))
{
to_select = child;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
if (!GTK_IS_TEAROFF_MENU_ITEM (child))
break;
G_GNUC_END_IGNORE_DEPRECATIONS
}
tmp_list = tmp_list->prev;
}
if (to_select)
gtk_menu_shell_select_item (menu_shell, to_select);
}
static gboolean
gtk_menu_shell_select_submenu_first (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkMenuItem *menu_item;
if (priv->active_menu_item == NULL)
return FALSE;
menu_item = GTK_MENU_ITEM (priv->active_menu_item);
if (menu_item->priv->submenu)
{
_gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item), FALSE);
gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->priv->submenu), TRUE);
if (GTK_MENU_SHELL (menu_item->priv->submenu)->priv->active_menu_item)
return TRUE;
}
return FALSE;
}
/* Moves the current menu item in direction 'direction':
*
* - GTK_MENU_DIR_PARENT: To the parent menu shell
* - GTK_MENU_DIR_CHILD: To the child menu shell (if this item has a submenu).
* - GTK_MENU_DIR_NEXT/PREV: To the next or previous item in this menu.
*
* As a bit of a hack to get movement between menus and
* menubars working, if submenu_placement is different for
* the menu and its MenuShell then the following apply:
*
* - For “parent” the current menu is not just moved to
* the parent, but moved to the previous entry in the parent
* - For 'child', if there is no child, then current is
* moved to the next item in the parent.
*
* Note that the above explanation of ::move_current was written
* before menus and menubars had support for RTL flipping and
* different packing directions, and therefore only applies for
* when text direction and packing direction are both left-to-right.
*/
static void
gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkMenuShell *parent_menu_shell = NULL;
gboolean had_selection;
priv->in_unselectable_item = FALSE;
had_selection = priv->active_menu_item != NULL;
if (priv->parent_menu_shell)
parent_menu_shell = GTK_MENU_SHELL (priv->parent_menu_shell);
switch (direction)
{
case GTK_MENU_DIR_PARENT:
if (parent_menu_shell)
{
if (GTK_MENU_SHELL_GET_CLASS (parent_menu_shell)->submenu_placement ==
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement)
gtk_menu_shell_deselect (menu_shell);
else
{
if (PACK_DIRECTION (parent_menu_shell) == GTK_PACK_DIRECTION_LTR)
gtk_menu_shell_move_selected (parent_menu_shell, -1);
else
gtk_menu_shell_move_selected (parent_menu_shell, 1);
gtk_menu_shell_select_submenu_first (parent_menu_shell);
}
}
/* If there is no parent and the submenu is in the opposite direction
* to the menu, then make the PARENT direction wrap around to
* the bottom of the submenu.
*/
else if (priv->active_menu_item &&
_gtk_menu_item_is_selectable (priv->active_menu_item) &&
GTK_MENU_ITEM (priv->active_menu_item)->priv->submenu)
{
GtkMenuShell *submenu = GTK_MENU_SHELL (GTK_MENU_ITEM (priv->active_menu_item)->priv->submenu);
if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement !=
GTK_MENU_SHELL_GET_CLASS (submenu)->submenu_placement)
_gtk_menu_shell_select_last (submenu, TRUE);
}
break;
case GTK_MENU_DIR_CHILD:
if (priv->active_menu_item &&
_gtk_menu_item_is_selectable (priv->active_menu_item) &&
GTK_MENU_ITEM (priv->active_menu_item)->priv->submenu)
{
if (gtk_menu_shell_select_submenu_first (menu_shell))
break;
}
/* Try to find a menu running the opposite direction */
while (parent_menu_shell &&
(GTK_MENU_SHELL_GET_CLASS (parent_menu_shell)->submenu_placement ==
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement))
{
parent_menu_shell = GTK_MENU_SHELL (parent_menu_shell->priv->parent_menu_shell);
}
if (parent_menu_shell)
{
if (PACK_DIRECTION (parent_menu_shell) == GTK_PACK_DIRECTION_LTR)
gtk_menu_shell_move_selected (parent_menu_shell, 1);
else
gtk_menu_shell_move_selected (parent_menu_shell, -1);
gtk_menu_shell_select_submenu_first (parent_menu_shell);
}
break;
case GTK_MENU_DIR_PREV:
gtk_menu_shell_move_selected (menu_shell, -1);
if (!had_selection && !priv->active_menu_item && priv->children)
_gtk_menu_shell_select_last (menu_shell, TRUE);
break;
case GTK_MENU_DIR_NEXT:
gtk_menu_shell_move_selected (menu_shell, 1);
if (!had_selection && !priv->active_menu_item && priv->children)
gtk_menu_shell_select_first (menu_shell, TRUE);
break;
}
}
/* Activate the current item. If 'force_hide' is true, hide
* the current menu item always. Otherwise, only hide
* it if menu_item->klass->hide_on_activate is true.
*/
static void
gtk_real_menu_shell_activate_current (GtkMenuShell *menu_shell,
gboolean force_hide)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
if (priv->active_menu_item &&
_gtk_menu_item_is_selectable (priv->active_menu_item))
{
if (GTK_MENU_ITEM (priv->active_menu_item)->priv->submenu == NULL)
gtk_menu_shell_activate_item (menu_shell,
priv->active_menu_item,
force_hide);
else
_gtk_menu_item_popup_submenu (priv->active_menu_item, FALSE);
}
}
static void
gtk_real_menu_shell_cancel (GtkMenuShell *menu_shell)
{
/* Unset the active menu item so gtk_menu_popdown() doesn't see it. */
gtk_menu_shell_deselect (menu_shell);
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
static void
gtk_real_menu_shell_cycle_focus (GtkMenuShell *menu_shell,
GtkDirectionType dir)
{
while (menu_shell && !GTK_IS_MENU_BAR (menu_shell))
{
if (menu_shell->priv->parent_menu_shell)
menu_shell = GTK_MENU_SHELL (menu_shell->priv->parent_menu_shell);
else
menu_shell = NULL;
}
if (menu_shell)
_gtk_menu_bar_cycle_focus (GTK_MENU_BAR (menu_shell), dir);
}
gint
_gtk_menu_shell_get_popup_delay (GtkMenuShell *menu_shell)
{
GtkMenuShellClass *klass = GTK_MENU_SHELL_GET_CLASS (menu_shell);
if (klass->get_popup_delay)
{
return klass->get_popup_delay (menu_shell);
}
else
{
return MENU_POPUP_DELAY;
}
}
/**
* gtk_menu_shell_cancel:
* @menu_shell: a #GtkMenuShell
*
* Cancels the selection within the menu shell.
*
* Since: 2.4
*/
void
gtk_menu_shell_cancel (GtkMenuShell *menu_shell)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_signal_emit (menu_shell, menu_shell_signals[CANCEL], 0);
}
static GtkMnemonicHash *
gtk_menu_shell_get_mnemonic_hash (GtkMenuShell *menu_shell,
gboolean create)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
if (!priv->mnemonic_hash && create)
priv->mnemonic_hash = _gtk_mnemonic_hash_new ();
return priv->mnemonic_hash;
}
static void
menu_shell_add_mnemonic_foreach (guint keyval,
GSList *targets,
gpointer data)
{
GtkKeyHash *key_hash = data;
_gtk_key_hash_add_entry (key_hash, keyval, 0, GUINT_TO_POINTER (keyval));
}
static GtkKeyHash *
gtk_menu_shell_get_key_hash (GtkMenuShell *menu_shell,
gboolean create)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
GtkWidget *widget = GTK_WIDGET (menu_shell);
if (!priv->key_hash && create && gtk_widget_has_screen (widget))
{
GtkMnemonicHash *mnemonic_hash = gtk_menu_shell_get_mnemonic_hash (menu_shell, FALSE);
GdkScreen *screen = gtk_widget_get_screen (widget);
GdkKeymap *keymap = gdk_keymap_get_for_display (gdk_screen_get_display (screen));
if (!mnemonic_hash)
return NULL;
priv->key_hash = _gtk_key_hash_new (keymap, NULL);
_gtk_mnemonic_hash_foreach (mnemonic_hash,
menu_shell_add_mnemonic_foreach,
priv->key_hash);
}
return priv->key_hash;
}
static void
gtk_menu_shell_reset_key_hash (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
if (priv->key_hash)
{
_gtk_key_hash_free (priv->key_hash);
priv->key_hash = NULL;
}
}
static gboolean
gtk_menu_shell_activate_mnemonic (GtkMenuShell *menu_shell,
GdkEventKey *event)
{
GtkMnemonicHash *mnemonic_hash;
GtkKeyHash *key_hash;
GSList *entries;
gboolean result = FALSE;
mnemonic_hash = gtk_menu_shell_get_mnemonic_hash (menu_shell, FALSE);
if (!mnemonic_hash)
return FALSE;
key_hash = gtk_menu_shell_get_key_hash (menu_shell, TRUE);
if (!key_hash)
return FALSE;
entries = _gtk_key_hash_lookup (key_hash,
event->hardware_keycode,
event->state,
gtk_accelerator_get_default_mod_mask (),
event->group);
if (entries)
{
result = _gtk_mnemonic_hash_activate (mnemonic_hash,
GPOINTER_TO_UINT (entries->data));
g_slist_free (entries);
}
return result;
}
void
_gtk_menu_shell_add_mnemonic (GtkMenuShell *menu_shell,
guint keyval,
GtkWidget *target)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_WIDGET (target));
_gtk_mnemonic_hash_add (gtk_menu_shell_get_mnemonic_hash (menu_shell, TRUE),
keyval, target);
gtk_menu_shell_reset_key_hash (menu_shell);
}
void
_gtk_menu_shell_remove_mnemonic (GtkMenuShell *menu_shell,
guint keyval,
GtkWidget *target)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_WIDGET (target));
_gtk_mnemonic_hash_remove (gtk_menu_shell_get_mnemonic_hash (menu_shell, TRUE),
keyval, target);
gtk_menu_shell_reset_key_hash (menu_shell);
}
void
_gtk_menu_shell_set_grab_device (GtkMenuShell *menu_shell,
GdkDevice *device)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (device == NULL || GDK_IS_DEVICE (device));
if (!device)
priv->grab_pointer = NULL;
else if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
priv->grab_pointer = gdk_device_get_associated_device (device);
else
priv->grab_pointer = device;
}
GdkDevice *
_gtk_menu_shell_get_grab_device (GtkMenuShell *menu_shell)
{
g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), NULL);
return menu_shell->priv->grab_pointer;
}
/**
* gtk_menu_shell_get_take_focus:
* @menu_shell: a #GtkMenuShell
*
* Returns %TRUE if the menu shell will take the keyboard focus on popup.
*
* Returns: %TRUE if the menu shell will take the keyboard focus on popup.
*
* Since: 2.8
*/
gboolean
gtk_menu_shell_get_take_focus (GtkMenuShell *menu_shell)
{
g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE);
return menu_shell->priv->take_focus;
}
/**
* gtk_menu_shell_set_take_focus:
* @menu_shell: a #GtkMenuShell
* @take_focus: %TRUE if the menu shell should take the keyboard
* focus on popup
*
* If @take_focus is %TRUE (the default) the menu shell will take
* the keyboard focus so that it will receive all keyboard events
* which is needed to enable keyboard navigation in menus.
*
* Setting @take_focus to %FALSE is useful only for special applications
* like virtual keyboard implementations which should not take keyboard
* focus.
*
* The @take_focus state of a menu or menu bar is automatically
* propagated to submenus whenever a submenu is popped up, so you
* don’t have to worry about recursively setting it for your entire
* menu hierarchy. Only when programmatically picking a submenu and
* popping it up manually, the @take_focus property of the submenu
* needs to be set explicitly.
*
* Note that setting it to %FALSE has side-effects:
*
* If the focus is in some other app, it keeps the focus and keynav in
* the menu doesn’t work. Consequently, keynav on the menu will only
* work if the focus is on some toplevel owned by the onscreen keyboard.
*
* To avoid confusing the user, menus with @take_focus set to %FALSE
* should not display mnemonics or accelerators, since it cannot be
* guaranteed that they will work.
*
* See also gdk_keyboard_grab()
*
* Since: 2.8
*/
void
gtk_menu_shell_set_take_focus (GtkMenuShell *menu_shell,
gboolean take_focus)
{
GtkMenuShellPrivate *priv = menu_shell->priv;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
if (priv->take_focus != take_focus)
{
priv->take_focus = take_focus;
g_object_notify (G_OBJECT (menu_shell), "take-focus");
}
}
/**
* gtk_menu_shell_get_selected_item:
* @menu_shell: a #GtkMenuShell
*
* Gets the currently selected item.
*
* Returns: (transfer none): the currently selected item
*
* Since: 3.0
*/
GtkWidget *
gtk_menu_shell_get_selected_item (GtkMenuShell *menu_shell)
{
g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), NULL);
return menu_shell->priv->active_menu_item;
}
/**
* gtk_menu_shell_get_parent_shell:
* @menu_shell: a #GtkMenuShell
*
* Gets the parent menu shell.
*
* The parent menu shell of a submenu is the #GtkMenu or #GtkMenuBar
* from which it was opened up.
*
* Returns: (transfer none): the parent #GtkMenuShell
*
* Since: 3.0
*/
GtkWidget *
gtk_menu_shell_get_parent_shell (GtkMenuShell *menu_shell)
{
g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), NULL);
return menu_shell->priv->parent_menu_shell;
}
static void
gtk_menu_shell_item_activate (GtkMenuItem *menuitem,
gpointer user_data)
{
GtkMenuTrackerItem *item = user_data;
gtk_menu_tracker_item_activated (item);
}
static void
gtk_menu_shell_submenu_shown (GtkWidget *submenu,
gpointer user_data)
{
GtkMenuTrackerItem *item = user_data;
gtk_menu_tracker_item_request_submenu_shown (item, TRUE);
}
static void
gtk_menu_shell_submenu_hidden (GtkWidget *submenu,
gpointer user_data)
{
GtkMenuTrackerItem *item = user_data;
gtk_menu_tracker_item_request_submenu_shown (item, FALSE);
}
static void
gtk_menu_shell_tracker_remove_func (gint position,
gpointer user_data)
{
GtkMenuShell *menu_shell = user_data;
GtkWidget *child;
child = g_list_nth_data (menu_shell->priv->children, position);
/* We use destroy here because in the case of an item with a submenu,
* the attached-to from the submenu holds a ref on the item and a
* simple gtk_container_remove() isn't good enough to break that.
*/
gtk_widget_destroy (child);
}
static void
gtk_menu_shell_tracker_insert_func (GtkMenuTrackerItem *item,
gint position,
gpointer user_data)
{
GtkMenuShell *menu_shell = user_data;
GtkWidget *widget;
if (gtk_menu_tracker_item_get_is_separator (item))
{
const gchar *label;
widget = gtk_separator_menu_item_new ();
/* For separators, we may have a section heading, so check the
* "label" property.
*
* Note: we only do this once, and we only do it if the label is
* non-NULL because even setting a NULL label on the separator
* will be enough to create a GtkLabel and add it, changing the
* appearance in the process.
*/
label = gtk_menu_tracker_item_get_label (item);
if (label)
gtk_menu_item_set_label (GTK_MENU_ITEM (widget), label);
gtk_widget_show (widget);
}
else if (gtk_menu_tracker_item_get_has_link (item, G_MENU_LINK_SUBMENU))
{
GtkMenuShell *submenu;
widget = gtk_model_menu_item_new ();
g_object_bind_property (item, "label", widget, "text", G_BINDING_SYNC_CREATE);
submenu = GTK_MENU_SHELL (gtk_menu_new ());
/* We recurse directly here: we could use an idle instead to
* prevent arbitrary recursion depth. We could also do it
* lazy...
*/
submenu->priv->tracker = gtk_menu_tracker_new_for_item_link (item,
G_MENU_LINK_SUBMENU, TRUE,
gtk_menu_shell_tracker_insert_func,
gtk_menu_shell_tracker_remove_func,
submenu);
gtk_menu_item_set_submenu (GTK_MENU_ITEM (widget), GTK_WIDGET (submenu));
if (gtk_menu_tracker_item_get_should_request_show (item))
{
/* We don't request show in the strictest sense of the
* word: we just notify when we are showing and don't
* bother waiting for the reply.
*
* This could be fixed one day, but it would be slightly
* complicated and would have a strange interaction with
* the submenu pop-up delay.
*
* Note: 'item' is already kept alive from above.
*/
g_signal_connect (submenu, "show", G_CALLBACK (gtk_menu_shell_submenu_shown), item);
g_signal_connect (submenu, "hide", G_CALLBACK (gtk_menu_shell_submenu_hidden), item);
}
gtk_widget_show (widget);
}
else
{
widget = gtk_model_menu_item_new ();
/* We bind to "text" instead of "label" because GtkModelMenuItem
* uses this property (along with "icon") to control its child
* widget. Once this is merged into GtkMenuItem we can go back to
* using "label".
*/
g_object_bind_property (item, "label", widget, "text", G_BINDING_SYNC_CREATE);
g_object_bind_property (item, "icon", widget, "icon", G_BINDING_SYNC_CREATE);
g_object_bind_property (item, "sensitive", widget, "sensitive", G_BINDING_SYNC_CREATE);
g_object_bind_property (item, "role", widget, "action-role", G_BINDING_SYNC_CREATE);
g_object_bind_property (item, "toggled", widget, "toggled", G_BINDING_SYNC_CREATE);
g_object_bind_property (item, "accel", widget, "accel", G_BINDING_SYNC_CREATE);
g_signal_connect (widget, "activate", G_CALLBACK (gtk_menu_shell_item_activate), item);
gtk_widget_show (widget);
}
/* TODO: drop this when we have bindings that ref the source */
g_object_set_data_full (G_OBJECT (widget), "GtkMenuTrackerItem", g_object_ref (item), g_object_unref);
gtk_menu_shell_insert (menu_shell, widget, position);
}
/**
* gtk_menu_shell_bind_model:
* @menu_shell: a #GtkMenuShell
* @model: (allow-none): the #GMenuModel to bind to or %NULL to remove
* binding
* @action_namespace: (allow-none): the namespace for actions in @model
* @with_separators: %TRUE if toplevel items in @shell should have
* separators between them
*
* Establishes a binding between a #GtkMenuShell and a #GMenuModel.
*
* The contents of @shell are removed and then refilled with menu items
* according to @model. When @model changes, @shell is updated.
* Calling this function twice on @shell with different @model will
* cause the first binding to be replaced with a binding to the new
* model. If @model is %NULL then any previous binding is undone and
* all children are removed.
*
* @with_separators determines if toplevel items (eg: sections) have
* separators inserted between them. This is typically desired for
* menus but doesn’t make sense for menubars.
*
* If @action_namespace is non-%NULL then the effect is as if all
* actions mentioned in the @model have their names prefixed with the
* namespace, plus a dot. For example, if the action “quit” is
* mentioned and @action_namespace is “app” then the effective action
* name is “app.quit”.
*
* This function uses #GtkActionable to define the action name and
* target values on the created menu items. If you want to use an
* action group other than “app” and “win”, or if you want to use a
* #GtkMenuShell outside of a #GtkApplicationWindow, then you will need
* to attach your own action group to the widget hierarchy using
* gtk_widget_insert_action_group(). As an example, if you created a
* group with a “quit” action and inserted it with the name “mygroup”
* then you would use the action name “mygroup.quit” in your
* #GMenuModel.
*
* For most cases you are probably better off using
* gtk_menu_new_from_model() or gtk_menu_bar_new_from_model() or just
* directly passing the #GMenuModel to gtk_application_set_app_menu() or
* gtk_application_set_menubar().
*
* Since: 3.6
*/
void
gtk_menu_shell_bind_model (GtkMenuShell *menu_shell,
GMenuModel *model,
const gchar *action_namespace,
gboolean with_separators)
{
GtkActionMuxer *muxer;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (model == NULL || G_IS_MENU_MODEL (model));
muxer = _gtk_widget_get_action_muxer (GTK_WIDGET (menu_shell));
g_clear_pointer (&menu_shell->priv->tracker, gtk_menu_tracker_free);
while (menu_shell->priv->children)
gtk_container_remove (GTK_CONTAINER (menu_shell), menu_shell->priv->children->data);
if (model)
menu_shell->priv->tracker = gtk_menu_tracker_new (GTK_ACTION_OBSERVABLE (muxer),
model, with_separators, TRUE, action_namespace,
gtk_menu_shell_tracker_insert_func,
gtk_menu_shell_tracker_remove_func,
menu_shell);
}
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