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gtk2/gtk/gtkmenushell.c
Ryan Lortie 5617b58420 Introduce GtkMenuTracker 
GtkMenuTracker folds a nested structure of sections in a GMenuModel into
a single linear menu, which it expresses to its user by means of 'insert
item at position' and 'remove item at position' callbacks.

The logic for where to insert separators and how to handle action
namespaces is contained within the tracker, removing the need to have
this logic duplicated in the 3 or 4 places that consume GMenuModel.

In comparison with the previous code, the tracker no longer completely
destroys and rebuilds menus every time a single change occurs.  As a
result, the new gtkmenu testcase now runs in approximately 3 seconds
instead of ~60 before.

https://bugzilla.gnome.org/show_bug.cgi?id=696468
2013-04-01 16:45:19 -04:00

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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.
*/
#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 "gtkprivate.h"
#include "gtkmain.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
#include "gtkmodelmenuitem.h"
#include "deprecated/gtktearoffmenuitem.h"
#include "a11y/gtkmenushellaccessible.h"
#define MENU_SHELL_TIMEOUT 500
#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
};
/* 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.
*
* menu_shell->active_menu_item, is however, not an "active"
* menu item (there is no such thing) but rather, the selected
* menu item in that MenuShell, if there is one.
*
* 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 menu_shell->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.
*
*
* Action signals:
*
* ::move_current (GtkMenuDirection *dir)
* Moves the current menu item in direction 'dir':
*
* 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 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.
*
* ::activate_current (GBoolean *force_hide)
* 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.
*
* ::cancel ()
* Cancels the current selection
*/
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 (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);
g_type_class_add_private (object_class, sizeof (GtkMenuShellPrivate));
}
static GType
gtk_menu_shell_child_type (GtkContainer *container)
{
return GTK_TYPE_MENU_ITEM;
}
static void
gtk_menu_shell_init (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv;
priv = G_TYPE_INSTANCE_GET_PRIVATE (menu_shell,
GTK_TYPE_MENU_SHELL,
GtkMenuShellPrivate);
menu_shell->priv = priv;
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: 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_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)
{
gboolean window_drag = FALSE;
gtk_widget_style_get (widget,
"window-dragging", &window_drag,
NULL);
if (window_drag)
{
gtk_menu_shell_deactivate (menu_shell);
gtk_window_begin_move_drag (GTK_WINDOW (gtk_widget_get_toplevel (widget)),
event->button,
event->x_root,
event->y_root,
event->time);
}
}
}
}
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->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)
{
gint popdown_delay;
GTimeVal *popup_time;
gint64 usec_since_popup = 0;
g_object_get (gtk_widget_get_settings (widget),
"gtk-menu-popdown-delay", &popdown_delay,
NULL);
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 explicitely (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 > 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 auto_mnemonics;
gboolean found;
gboolean mnemonics_visible;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
"gtk-auto-mnemonics", &auto_mnemonics,
NULL);
if (!auto_mnemonics)
return;
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;
gboolean wrap_around;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
"gtk-keynav-wrap-around", &wrap_around,
NULL);
if (distance > 0)
{
node = node->next;
while (node != start_node &&
(!node || !_gtk_menu_item_is_selectable (node->data)))
{
if (node)
node = node->next;
else if (wrap_around)
node = priv->children;
else
{
gtk_widget_error_bell (GTK_WIDGET (menu_shell));
break;
}
}
}
else
{
node = node->prev;
while (node != start_node &&
(!node || !_gtk_menu_item_is_selectable (node->data)))
{
if (node)
node = node->prev;
else if (wrap_around)
node = g_list_last (priv->children);
else
{
gtk_widget_error_bell (GTK_WIDGET (menu_shell));
break;
}
}
}
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;
if (!GTK_IS_TEAROFF_MENU_ITEM (child))
break;
}
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;
if (!GTK_IS_TEAROFF_MENU_ITEM (child))
break;
}
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;
}
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;
}
}
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
{
gint popup_delay;
GtkWidget *widget = GTK_WIDGET (menu_shell);
g_object_get (gtk_widget_get_settings (widget),
"gtk-menu-popup-delay", &popup_delay,
NULL);
return 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 explicitely.
*
* 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_tracker_insert_func (gint position,
GMenuModel *model,
gint item_index,
const gchar *action_namespace,
gboolean is_separator,
gpointer user_data)
{
GtkMenuShell *menu_shell = user_data;
GtkWidget *item;
if (is_separator)
{
gchar *label;
item = gtk_separator_menu_item_new ();
if (g_menu_model_get_item_attribute (model, item_index, G_MENU_ATTRIBUTE_LABEL, "s", &label))
{
gtk_menu_item_set_label (GTK_MENU_ITEM (item), label);
g_free (label);
}
}
else
item = gtk_model_menu_item_new (model, item_index, action_namespace);
gtk_menu_shell_insert (menu_shell, item, position);
gtk_widget_show (item);
}
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);
}
/**
* 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".
*
* 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_menu_bar().
*
* Since: 3.6
*/
void
gtk_menu_shell_bind_model (GtkMenuShell *menu_shell,
GMenuModel *model,
const gchar *action_namespace,
gboolean with_separators)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (model == NULL || G_IS_MENU_MODEL (model));
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 (model, with_separators, action_namespace,
gtk_menu_shell_tracker_insert_func,
gtk_menu_shell_tracker_remove_func,
menu_shell);
}
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