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gtk2/gtk/gtkmenushell.c
Owen Taylor 288909d466 Improve test to prevent infinite loop. (#74952, Thomas Leonard) 
Wed Mar 20 11:32:07 2002  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkentry.c: Improve test to prevent infinite
        loop. (#74952, Thomas Leonard)

        * gtk/gtkmenushell.c (gtk_real_menu_shell_cycle_focus):
        Fix warning when toplevel menu shell isn't a menu
        bar. (Thomas Leonard, #75602)
2002-03-20 17:04:32 +00:00

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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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* 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/.
*/
#define GTK_MENU_INTERNALS
#include "gdk/gdkkeysyms.h"
#include "gtkbindings.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenubar.h"
#include "gtkmenuitem.h"
#include "gtkmenushell.h"
#include "gtksignal.h"
#include "gtktearoffmenuitem.h"
#include "gtkwindow.h"
#define MENU_SHELL_TIMEOUT 500
enum {
DEACTIVATE,
SELECTION_DONE,
MOVE_CURRENT,
ACTIVATE_CURRENT,
CANCEL,
CYCLE_FOCUS,
LAST_SIGNAL
};
typedef void (*GtkMenuShellSignal1) (GtkObject *object,
GtkMenuDirectionType arg1,
gpointer data);
typedef void (*GtkMenuShellSignal2) (GtkObject *object,
gboolean arg1,
gpointer data);
/* 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 heirarchy. (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.
*
*
* ::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_class_init (GtkMenuShellClass *klass);
static void gtk_menu_shell_init (GtkMenuShell *menu_shell);
static void gtk_menu_shell_realize (GtkWidget *widget);
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_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 GtkType gtk_menu_shell_child_type (GtkContainer *container);
static void gtk_menu_shell_real_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item);
static void 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 GtkContainerClass *parent_class = NULL;
static guint menu_shell_signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_menu_shell_get_type (void)
{
static GtkType menu_shell_type = 0;
if (!menu_shell_type)
{
static const GtkTypeInfo menu_shell_info =
{
"GtkMenuShell",
sizeof (GtkMenuShell),
sizeof (GtkMenuShellClass),
(GtkClassInitFunc) gtk_menu_shell_class_init,
(GtkObjectInitFunc) gtk_menu_shell_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
menu_shell_type = gtk_type_unique (gtk_container_get_type (), &menu_shell_info);
}
return menu_shell_type;
}
static guint
binding_signal_new (const gchar *signal_name,
GType itype,
GSignalFlags signal_flags,
GCallback handler,
GSignalAccumulator accumulator,
gpointer accu_data,
GSignalCMarshaller c_marshaller,
GType return_type,
guint n_params,
...)
{
va_list args;
guint signal_id;
g_return_val_if_fail (signal_name != NULL, 0);
va_start (args, n_params);
signal_id = g_signal_new_valist (signal_name, itype, signal_flags,
g_cclosure_new (handler, NULL, NULL),
accumulator, accu_data, c_marshaller,
return_type, n_params, args);
va_end (args);
return signal_id;
}
static void
gtk_menu_shell_class_init (GtkMenuShellClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkBindingSet *binding_set;
object_class = (GtkObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
container_class = (GtkContainerClass*) klass;
parent_class = gtk_type_class (gtk_container_get_type ());
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->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;
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;
menu_shell_signals[DEACTIVATE] =
gtk_signal_new ("deactivate",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkMenuShellClass, deactivate),
_gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
menu_shell_signals[SELECTION_DONE] =
gtk_signal_new ("selection-done",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkMenuShellClass, selection_done),
_gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
menu_shell_signals[MOVE_CURRENT] =
gtk_signal_new ("move_current",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkMenuShellClass, move_current),
_gtk_marshal_VOID__ENUM,
GTK_TYPE_NONE, 1,
GTK_TYPE_MENU_DIRECTION_TYPE);
menu_shell_signals[ACTIVATE_CURRENT] =
gtk_signal_new ("activate_current",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkMenuShellClass, activate_current),
_gtk_marshal_VOID__BOOLEAN,
GTK_TYPE_NONE, 1,
GTK_TYPE_BOOL);
menu_shell_signals[CANCEL] =
gtk_signal_new ("cancel",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkMenuShellClass, cancel),
_gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
menu_shell_signals[CYCLE_FOCUS] =
binding_signal_new ("cycle_focus",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
G_CALLBACK (gtk_real_menu_shell_cycle_focus),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
GTK_TYPE_NONE, 1,
GTK_TYPE_DIRECTION_TYPE);
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set,
GDK_Escape, 0,
"cancel", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_Return, 0,
"activate_current", 1,
GTK_TYPE_BOOL,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Enter, 0,
"activate_current", 1,
GTK_TYPE_BOOL,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_space, 0,
"activate_current", 1,
GTK_TYPE_BOOL,
FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Space, 0,
"activate_current", 1,
GTK_TYPE_BOOL,
FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_Tab, GDK_CONTROL_MASK,
"cycle_focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_FORWARD);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Tab, GDK_CONTROL_MASK,
"cycle_focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_FORWARD);
gtk_binding_entry_add_signal (binding_set,
GDK_Tab, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"cycle_focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_BACKWARD);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Tab, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"cycle_focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_BACKWARD);
}
static GtkType
gtk_menu_shell_child_type (GtkContainer *container)
{
return GTK_TYPE_MENU_ITEM;
}
static void
gtk_menu_shell_init (GtkMenuShell *menu_shell)
{
menu_shell->children = NULL;
menu_shell->active_menu_item = NULL;
menu_shell->parent_menu_shell = NULL;
menu_shell->active = FALSE;
menu_shell->have_grab = FALSE;
menu_shell->have_xgrab = FALSE;
menu_shell->ignore_leave = FALSE;
menu_shell->button = 0;
menu_shell->menu_flag = 0;
menu_shell->activate_time = 0;
}
void
gtk_menu_shell_append (GtkMenuShell *menu_shell,
GtkWidget *child)
{
gtk_menu_shell_insert (menu_shell, child, -1);
}
void
gtk_menu_shell_prepend (GtkMenuShell *menu_shell,
GtkWidget *child)
{
gtk_menu_shell_insert (menu_shell, child, 0);
}
void
gtk_menu_shell_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position)
{
GtkMenuShellClass *class;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_MENU_ITEM (child));
class = GTK_MENU_SHELL_GET_CLASS (menu_shell);
if (class->insert)
class->insert (menu_shell, child, position);
}
static void
gtk_menu_shell_real_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position)
{
menu_shell->children = g_list_insert (menu_shell->children, child, position);
gtk_widget_set_parent (child, GTK_WIDGET (menu_shell));
}
void
gtk_menu_shell_deactivate (GtkMenuShell *menu_shell)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
gtk_signal_emit (GTK_OBJECT (menu_shell), menu_shell_signals[DEACTIVATE]);
}
static void
gtk_menu_shell_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (GTK_IS_MENU_SHELL (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (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 | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
static gint
gtk_menu_shell_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkMenuShell *menu_shell;
GtkWidget *menu_item;
g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (event->type != GDK_BUTTON_PRESS)
return FALSE;
menu_shell = GTK_MENU_SHELL (widget);
if (menu_shell->parent_menu_shell)
{
return gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
}
else if (!menu_shell->active || !menu_shell->button)
{
if (!menu_shell->active)
{
gtk_grab_add (GTK_WIDGET (widget));
menu_shell->have_grab = TRUE;
menu_shell->active = TRUE;
}
menu_shell->button = event->button;
menu_item = gtk_menu_shell_get_item (menu_shell, (GdkEvent *)event);
if (menu_item && _gtk_menu_item_is_selectable (menu_item))
{
if ((menu_item->parent == widget) &&
(menu_item != menu_shell->active_menu_item))
{
if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement == GTK_TOP_BOTTOM)
g_object_set_data (G_OBJECT (menu_shell),
"gtk-menushell-just-activated",
GUINT_TO_POINTER (1));
gtk_menu_shell_select_item (menu_shell, menu_item);
}
}
}
else
{
widget = gtk_get_event_widget ((GdkEvent*) event);
if (widget == GTK_WIDGET (menu_shell))
{
gtk_menu_shell_deactivate (menu_shell);
gtk_signal_emit (GTK_OBJECT (menu_shell), menu_shell_signals[SELECTION_DONE]);
}
}
return TRUE;
}
static gint
gtk_menu_shell_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkMenuShell *menu_shell;
GtkWidget *menu_item;
gint deactivate;
g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
menu_shell = GTK_MENU_SHELL (widget);
if (menu_shell->active)
{
gboolean deactivate_immediately = FALSE;
if (menu_shell->button && (event->button != menu_shell->button))
{
menu_shell->button = 0;
if (menu_shell->parent_menu_shell)
return gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
}
menu_shell->button = 0;
menu_item = gtk_menu_shell_get_item (menu_shell, (GdkEvent*) event);
deactivate = TRUE;
if (menu_item
&& GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement == GTK_TOP_BOTTOM)
{
if (g_object_get_data (G_OBJECT (menu_shell), "gtk-menushell-just-activated"))
g_object_set_data (G_OBJECT (menu_shell), "gtk-menushell-just-activated", NULL);
else
deactivate_immediately = TRUE;
}
if ((event->time - menu_shell->activate_time) > MENU_SHELL_TIMEOUT)
{
if (deactivate_immediately)
{
gtk_menu_shell_deactivate (menu_shell);
return TRUE;
}
if (menu_item && (menu_shell->active_menu_item == menu_item) &&
_gtk_menu_item_is_selectable (menu_item))
{
if (GTK_MENU_ITEM (menu_item)->submenu == NULL)
{
gtk_menu_shell_activate_item (menu_shell, menu_item, TRUE);
return TRUE;
}
}
else if (menu_item && !_gtk_menu_item_is_selectable (menu_item))
deactivate = FALSE;
else if (menu_shell->parent_menu_shell)
{
menu_shell->active = TRUE;
gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
return TRUE;
}
}
else
{
/* 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.
*/
menu_shell->activate_time = 0;
deactivate = FALSE;
}
/* If the button click was very fast, or we ended up on a submenu,
* leave the menu up
*/
if (!deactivate ||
(menu_item && (menu_shell->active_menu_item == menu_item)))
{
deactivate = FALSE;
menu_shell->ignore_leave = TRUE;
}
else
deactivate = TRUE;
if (deactivate)
{
gtk_menu_shell_deactivate (menu_shell);
gtk_signal_emit (GTK_OBJECT (menu_shell), menu_shell_signals[SELECTION_DONE]);
}
}
return TRUE;
}
static gint
gtk_menu_shell_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkMenuShell *menu_shell;
GtkWidget *toplevel;
g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
menu_shell = GTK_MENU_SHELL (widget);
if (!menu_shell->active_menu_item && menu_shell->parent_menu_shell)
return gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent *)event);
if (_gtk_bindings_activate_event (GTK_OBJECT (widget), event))
return TRUE;
toplevel = gtk_widget_get_toplevel (widget);
if (GTK_IS_WINDOW (toplevel) &&
_gtk_window_activate_key (GTK_WINDOW (toplevel), event))
return TRUE;
return FALSE;
}
static gint
gtk_menu_shell_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkMenuShell *menu_shell;
GtkWidget *menu_item;
g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
menu_shell = GTK_MENU_SHELL (widget);
if (menu_shell->active)
{
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (!menu_item ||
(GTK_IS_MENU_ITEM (menu_item) &&
!_gtk_menu_item_is_selectable (menu_item)))
return TRUE;
if ((menu_item->parent == widget) &&
(menu_shell->active_menu_item != menu_item) &&
GTK_IS_MENU_ITEM (menu_item))
{
if (menu_shell->ignore_enter)
return TRUE;
if ((event->detail != GDK_NOTIFY_INFERIOR) &&
(GTK_WIDGET_STATE (menu_item) != GTK_STATE_PRELIGHT))
{
gtk_menu_shell_select_item (menu_shell, menu_item);
}
}
else if (menu_shell->parent_menu_shell)
{
gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
}
}
return TRUE;
}
static gint
gtk_menu_shell_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkMenuShell *menu_shell;
GtkMenuItem *menu_item;
GtkWidget *event_widget;
g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_VISIBLE (widget))
{
menu_shell = GTK_MENU_SHELL (widget);
event_widget = gtk_get_event_widget ((GdkEvent*) event);
if (!event_widget || !GTK_IS_MENU_ITEM (event_widget))
return TRUE;
menu_item = GTK_MENU_ITEM (event_widget);
if (menu_shell->ignore_leave)
{
menu_shell->ignore_leave = FALSE;
return TRUE;
}
if (!_gtk_menu_item_is_selectable (event_widget))
return TRUE;
if ((menu_shell->active_menu_item == event_widget) &&
(menu_item->submenu == NULL))
{
if ((event->detail != GDK_NOTIFY_INFERIOR) &&
(GTK_WIDGET_STATE (menu_item) != GTK_STATE_NORMAL))
{
gtk_menu_shell_deselect (menu_shell);
}
}
else if (menu_shell->parent_menu_shell)
{
gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
}
}
return TRUE;
}
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;
gint was_visible;
g_return_if_fail (GTK_IS_MENU_SHELL (container));
g_return_if_fail (GTK_IS_MENU_ITEM (widget));
was_visible = GTK_WIDGET_VISIBLE (widget);
menu_shell = GTK_MENU_SHELL (container);
menu_shell->children = g_list_remove (menu_shell->children, widget);
if (widget == menu_shell->active_menu_item)
{
gtk_item_deselect (GTK_ITEM (menu_shell->active_menu_item));
menu_shell->active_menu_item = NULL;
}
gtk_widget_unparent (widget);
/* queue resize regardless of GTK_WIDGET_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;
GtkWidget *child;
GList *children;
g_return_if_fail (GTK_IS_MENU_SHELL (container));
g_return_if_fail (callback != NULL);
menu_shell = GTK_MENU_SHELL (container);
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
(* callback) (child, callback_data);
}
}
static void
gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell)
{
if (menu_shell->active)
{
menu_shell->button = 0;
menu_shell->active = FALSE;
if (menu_shell->active_menu_item)
{
gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
menu_shell->active_menu_item = NULL;
}
if (menu_shell->have_grab)
{
menu_shell->have_grab = FALSE;
gtk_grab_remove (GTK_WIDGET (menu_shell));
}
if (menu_shell->have_xgrab)
{
menu_shell->have_xgrab = FALSE;
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gdk_keyboard_ungrab (GDK_CURRENT_TIME);
}
}
}
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 = child->parent;
while (parent && GTK_IS_MENU_SHELL (parent))
{
if (parent == (GtkWidget*) menu_shell)
return TRUE;
parent = GTK_MENU_SHELL (parent)->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 = menu_item->parent;
if (menu_item && gtk_menu_shell_is_item (menu_shell, menu_item))
return menu_item;
else
return NULL;
}
/* Handlers for action signals */
void
gtk_menu_shell_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
{
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)
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)
{
gtk_menu_shell_deselect (menu_shell);
menu_shell->active_menu_item = menu_item;
_gtk_menu_item_set_placement (GTK_MENU_ITEM (menu_shell->active_menu_item),
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement);
gtk_menu_item_select (GTK_MENU_ITEM (menu_shell->active_menu_item));
/* This allows the bizarre radio buttons-with-submenus-display-history
* behavior
*/
if (GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu)
gtk_widget_activate (menu_shell->active_menu_item);
}
void
gtk_menu_shell_deselect (GtkMenuShell *menu_shell)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
if (menu_shell->active_menu_item)
{
gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
menu_shell->active_menu_item = NULL;
}
}
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;
gtk_widget_ref (GTK_WIDGET (menu_shell));
if (deactivate)
{
GtkMenuShell *parent_menu_shell = menu_shell;
do
{
gtk_widget_ref (GTK_WIDGET (parent_menu_shell));
shells = g_slist_prepend (shells, parent_menu_shell);
parent_menu_shell = (GtkMenuShell*) parent_menu_shell->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_flush ();
}
gtk_widget_activate (menu_item);
for (slist = shells; slist; slist = slist->next)
{
gtk_signal_emit (slist->data, menu_shell_signals[SELECTION_DONE]);
gtk_widget_unref (slist->data);
}
g_slist_free (shells);
gtk_widget_unref (GTK_WIDGET (menu_shell));
}
/* Distance should be +/- 1 */
static void
gtk_menu_shell_move_selected (GtkMenuShell *menu_shell,
gint distance)
{
if (menu_shell->active_menu_item)
{
GList *node = g_list_find (menu_shell->children,
menu_shell->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 = menu_shell->children;
else
node = node->next;
}
}
else
{
node = node->prev;
while (node != start_node &&
(!node || !_gtk_menu_item_is_selectable (node->data)))
{
if (!node)
node = g_list_last (menu_shell->children);
else
node = node->prev;
}
}
if (node)
gtk_menu_shell_select_item (menu_shell, node->data);
}
}
/**
* _gtk_menu_shell_select_first:
* @menu_shell: a #GtkMenuShell
*
* Select the first visible child of the menu shell, unless
* it's a tearoff item.
**/
void
_gtk_menu_shell_select_first (GtkMenuShell *menu_shell)
{
GtkWidget *to_select = NULL;
GList *tmp_list;
tmp_list = menu_shell->children;
while (tmp_list)
{
GtkWidget *child = tmp_list->data;
if (GTK_WIDGET_VISIBLE (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);
}
static void
gtk_menu_shell_select_submenu_first (GtkMenuShell *menu_shell)
{
GtkMenuItem *menu_item;
menu_item = GTK_MENU_ITEM (menu_shell->active_menu_item);
if (menu_item->submenu)
_gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->submenu));
}
static void
gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction)
{
GtkMenuShell *parent_menu_shell = NULL;
gboolean had_selection;
had_selection = menu_shell->active_menu_item != NULL;
if (menu_shell->parent_menu_shell)
parent_menu_shell = GTK_MENU_SHELL (menu_shell->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
{
gtk_menu_shell_move_selected (parent_menu_shell, -1);
gtk_menu_shell_select_submenu_first (parent_menu_shell);
}
}
break;
case GTK_MENU_DIR_CHILD:
if (menu_shell->active_menu_item &&
_gtk_menu_item_is_selectable (menu_shell->active_menu_item) &&
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu)
{
gtk_menu_shell_select_submenu_first (menu_shell);
}
else
{
/* 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))
{
GtkWidget *tmp_widget = parent_menu_shell->parent_menu_shell;
if (tmp_widget)
parent_menu_shell = GTK_MENU_SHELL (tmp_widget);
else
parent_menu_shell = NULL;
}
if (parent_menu_shell)
{
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 &&
!menu_shell->active_menu_item &&
menu_shell->children)
gtk_menu_shell_select_item (menu_shell, g_list_last (menu_shell->children)->data);
break;
case GTK_MENU_DIR_NEXT:
gtk_menu_shell_move_selected (menu_shell, 1);
if (!had_selection &&
!menu_shell->active_menu_item &&
menu_shell->children)
gtk_menu_shell_select_item (menu_shell, menu_shell->children->data);
break;
}
}
static void
gtk_real_menu_shell_activate_current (GtkMenuShell *menu_shell,
gboolean force_hide)
{
if (menu_shell->active_menu_item &&
_gtk_menu_item_is_selectable (menu_shell->active_menu_item) &&
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu == NULL)
{
gtk_menu_shell_activate_item (menu_shell,
menu_shell->active_menu_item,
force_hide);
}
}
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);
gtk_signal_emit (GTK_OBJECT (menu_shell), menu_shell_signals[SELECTION_DONE]);
}
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->parent_menu_shell)
menu_shell = GTK_MENU_SHELL (menu_shell->parent_menu_shell);
else
menu_shell = NULL;
}
if (menu_shell)
_gtk_menu_bar_cycle_focus (GTK_MENU_BAR (menu_shell), dir);
}
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