/* 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 "config.h" #include "gdk/gdkkeysyms.h" #include "gtkbindings.h" #include "gtkkeyhash.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkmenu.h" #include "gtkmenubar.h" #include "gtkmenuitem.h" #include "gtkmenushell.h" #include "gtkmnemonichash.h" #include "gtktearoffmenuitem.h" #include "gtkwindow.h" #include "gtkprivate.h" #include "gtkintl.h" #include "gtkalias.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, 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 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. * * 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 */ #define GTK_MENU_SHELL_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_MENU_SHELL, GtkMenuShellPrivate)) typedef struct _GtkMenuShellPrivate GtkMenuShellPrivate; struct _GtkMenuShellPrivate { GtkMnemonicHash *mnemonic_hash; GtkKeyHash *key_hash; guint take_focus : 1; guint activated_submenu : 1; }; 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 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; 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; 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); 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); 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); 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); 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); 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); 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, G_TYPE_BOOLEAN, TRUE); gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "activate_current", 1, G_TYPE_BOOLEAN, TRUE); gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "activate_current", 1, G_TYPE_BOOLEAN, TRUE); gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "activate_current", 1, G_TYPE_BOOLEAN, FALSE); gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0, "activate_current", 1, G_TYPE_BOOLEAN, FALSE); gtk_binding_entry_add_signal (binding_set, GDK_F10, 0, "cycle_focus", 1, GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_FORWARD); gtk_binding_entry_add_signal (binding_set, GDK_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)); 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 = GTK_MENU_SHELL_GET_PRIVATE (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->button = 0; menu_shell->activate_time = 0; priv->mnemonic_hash = NULL; priv->key_hash = NULL; priv->take_focus = TRUE; priv->activated_submenu = FALSE; } 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 = GTK_MENU_SHELL_GET_PRIVATE (menu_shell); 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); } 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)); g_signal_emit (menu_shell, menu_shell_signals[DEACTIVATE], 0); } static void gtk_menu_shell_realize (GtkWidget *widget) { GdkWindowAttr attributes; gint attributes_mask; 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); } void _gtk_menu_shell_activate (GtkMenuShell *menu_shell) { if (!menu_shell->active) { gtk_grab_add (GTK_WIDGET (menu_shell)); menu_shell->have_grab = TRUE; menu_shell->active = TRUE; } } static gint gtk_menu_shell_button_press (GtkWidget *widget, GdkEventButton *event) { GtkMenuShell *menu_shell; GtkWidget *menu_item; 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); menu_item = gtk_menu_shell_get_item (menu_shell, (GdkEvent *)event); if (menu_item && _gtk_menu_item_is_selectable (menu_item) && menu_item != GTK_MENU_SHELL (menu_item->parent)->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 (menu_item->parent)->submenu_placement != GTK_TOP_BOTTOM) { gtk_menu_shell_select_item (GTK_MENU_SHELL (menu_item->parent), menu_item); } } if (!menu_shell->active || !menu_shell->button) { _gtk_menu_shell_activate (menu_shell); menu_shell->button = event->button; if (menu_item && _gtk_menu_item_is_selectable (menu_item) && menu_item->parent == widget && menu_item != menu_shell->active_menu_item) { if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement == GTK_TOP_BOTTOM) { menu_shell->activate_time = event->time; 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); 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)->submenu != NULL && !GTK_WIDGET_VISIBLE (GTK_MENU_ITEM (menu_item)->submenu)) { GtkMenuShellPrivate *priv; _gtk_menu_item_popup_submenu (menu_item, FALSE); priv = GTK_MENU_SHELL_GET_PRIVATE (menu_item->parent); priv->activated_submenu = TRUE; } return TRUE; } static gboolean gtk_menu_shell_grab_broken (GtkWidget *widget, GdkEventGrabBroken *event) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget); if (menu_shell->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 = GTK_MENU_SHELL_GET_PRIVATE (widget); if (menu_shell->active) { GtkWidget *menu_item; gboolean deactivate = TRUE; 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); if ((event->time - menu_shell->activate_time) > MENU_SHELL_TIMEOUT) { if (menu_item && (menu_shell->active_menu_item == menu_item) && _gtk_menu_item_is_selectable (menu_item)) { GtkWidget *submenu = GTK_MENU_ITEM (menu_item)->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 (¤t_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 (menu_shell->parent_menu_shell) { menu_shell->active = TRUE; gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event); deactivate = FALSE; } /* If we ended up on an item with a submenu, leave the menu up. */ if (menu_item && (menu_shell->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. */ menu_shell->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; } static gint gtk_menu_shell_key_press (GtkWidget *widget, GdkEventKey *event) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget); gboolean enable_mnemonics; 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; 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); if (menu_shell->active) { GtkWidget *menu_item; 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 && GTK_IS_MENU_ITEM (menu_item)) { if (menu_shell->ignore_enter) return TRUE; if (event->detail != GDK_NOTIFY_INFERIOR) { if (GTK_WIDGET_STATE (menu_item) != GTK_STATE_PRELIGHT) 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)->submenu != NULL) { GtkMenuShellPrivate *priv; priv = GTK_MENU_SHELL_GET_PRIVATE (menu_item->parent); priv->activated_submenu = TRUE; if (!GTK_WIDGET_VISIBLE (GTK_MENU_ITEM (menu_item)->submenu)) { gboolean touchscreen_mode; g_object_get (gtk_widget_get_settings (widget), "gtk-touchscreen-mode", &touchscreen_mode, NULL); if (touchscreen_mode) _gtk_menu_item_popup_submenu (menu_item, TRUE); } } } } 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) { if (GTK_WIDGET_VISIBLE (widget)) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget); 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)) 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_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); gint was_visible; was_visible = GTK_WIDGET_VISIBLE (widget); 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 = GTK_MENU_SHELL (container); GtkWidget *child; GList *children; 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; menu_shell->activate_time = 0; 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) { GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (menu_shell)); menu_shell->have_xgrab = FALSE; gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME); gdk_display_keyboard_ungrab (display, 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 (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 && !(menu_shell->active && menu_shell->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) { GtkPackDirection pack_dir = PACK_DIRECTION (menu_shell); gtk_menu_shell_deselect (menu_shell); if (!_gtk_menu_item_is_selectable (menu_item)) return; menu_shell->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 (menu_shell->active_menu_item), GTK_LEFT_RIGHT); else _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; 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->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) { if (menu_shell->active_menu_item) { GList *node = g_list_find (menu_shell->children, menu_shell->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 = menu_shell->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 (menu_shell->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) { GtkWidget *to_select = NULL; GList *tmp_list; tmp_list = menu_shell->children; while (tmp_list) { GtkWidget *child = tmp_list->data; if ((!search_sensitive && GTK_WIDGET_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) { GtkWidget *to_select = NULL; GList *tmp_list; tmp_list = g_list_last (menu_shell->children); while (tmp_list) { GtkWidget *child = tmp_list->data; if ((!search_sensitive && GTK_WIDGET_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) { GtkMenuItem *menu_item; if (menu_shell->active_menu_item == NULL) return FALSE; menu_item = GTK_MENU_ITEM (menu_shell->active_menu_item); if (menu_item->submenu) { _gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item), FALSE); gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->submenu), TRUE); if (GTK_MENU_SHELL (menu_item->submenu)->active_menu_item) return TRUE; } return FALSE; } static void gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell, GtkMenuDirectionType direction) { GtkMenuShell *parent_menu_shell = NULL; gboolean had_selection; gboolean touchscreen_mode; had_selection = menu_shell->active_menu_item != NULL; g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)), "gtk-touchscreen-mode", &touchscreen_mode, 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 (touchscreen_mode && menu_shell->active_menu_item && GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu && GTK_WIDGET_VISIBLE (GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu)) { /* if we are on a menu item that has an open submenu but the * focus is not in that submenu (e.g. because it's empty or * has only insensitive items), close that submenu instead * of running into the code below which would close *this* * menu. */ _gtk_menu_item_popdown_submenu (menu_shell->active_menu_item); } else if (parent_menu_shell) { if (touchscreen_mode) { /* close menu when returning from submenu. */ _gtk_menu_item_popdown_submenu (GTK_MENU (menu_shell)->parent_menu_item); break; } 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 (menu_shell->active_menu_item && _gtk_menu_item_is_selectable (menu_shell->active_menu_item) && GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu) { GtkMenuShell *submenu = GTK_MENU_SHELL (GTK_MENU_ITEM (menu_shell->active_menu_item)->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 (menu_shell->active_menu_item && _gtk_menu_item_is_selectable (menu_shell->active_menu_item) && GTK_MENU_ITEM (menu_shell->active_menu_item)->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->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 && !menu_shell->active_menu_item && menu_shell->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 && !menu_shell->active_menu_item && menu_shell->children) gtk_menu_shell_select_first (menu_shell, TRUE); 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)) { if (GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu == NULL) gtk_menu_shell_activate_item (menu_shell, menu_shell->active_menu_item, force_hide); else _gtk_menu_item_popup_submenu (menu_shell->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->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); } 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 *private = GTK_MENU_SHELL_GET_PRIVATE (menu_shell); if (!private->mnemonic_hash && create) private->mnemonic_hash = _gtk_mnemonic_hash_new (); return private->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 *private = GTK_MENU_SHELL_GET_PRIVATE (menu_shell); GtkWidget *widget = GTK_WIDGET (menu_shell); if (!private->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; private->key_hash = _gtk_key_hash_new (keymap, NULL); _gtk_mnemonic_hash_foreach (mnemonic_hash, menu_shell_add_mnemonic_foreach, private->key_hash); } return private->key_hash; } static void gtk_menu_shell_reset_key_hash (GtkMenuShell *menu_shell) { GtkMenuShellPrivate *private = GTK_MENU_SHELL_GET_PRIVATE (menu_shell); if (private->key_hash) { _gtk_key_hash_free (private->key_hash); private->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)); 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); } /** * 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) { GtkMenuShellPrivate *priv; g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE); priv = GTK_MENU_SHELL_GET_PRIVATE (menu_shell); return 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; g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell)); priv = GTK_MENU_SHELL_GET_PRIVATE (menu_shell); if (priv->take_focus != take_focus) { priv->take_focus = take_focus; g_object_notify (G_OBJECT (menu_shell), "take-focus"); } } #define __GTK_MENU_SHELL_C__ #include "gtkaliasdef.c"