/* 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 . */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ /** * SECTION:gtkmenushell * @Title: GtkMenuShell * @Short_description: A base class for menu objects * * A #GtkMenuShell is the abstract base class used to derive the * #GtkMenu and #GtkMenuBar subclasses. * * A #GtkMenuShell is a container of #GtkMenuItem objects arranged * in a list which can be navigated, selected, and activated by the * user to perform application functions. A #GtkMenuItem can have a * submenu associated with it, allowing for nested hierarchical menus. * * # Terminology * * A menu item can be “selected”, this means that it is displayed * in the prelight state, and if it has a submenu, that submenu * will be popped up. * * A menu is “active” when it is visible onscreen and the user * is selecting from it. A menubar is not active until the user * clicks on one of its menuitems. When a menu is active, * passing the mouse over a submenu will pop it up. * * There is also a concept of the current menu and a current * menu item. The current menu item is the selected menu item * that is furthest down in the hierarchy. (Every active menu shell * does not necessarily contain a selected menu item, but if * it does, then the parent menu shell must also contain * a selected menu item.) The current menu is the menu that * contains the current menu item. It will always have a GTK * grab and receive all key presses. */ #include "config.h" #include "gtkmenushellprivate.h" #include "gtkbindings.h" #include "gtkintl.h" #include "gtkkeyhash.h" #include "gtklabelprivate.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkmenubar.h" #include "gtkmenuitemprivate.h" #include "gtkmnemonichash.h" #include "gtkmodelmenuitem.h" #include "gtkprivate.h" #include "gtkseparatormenuitem.h" #include "gtktypebuiltins.h" #include "gtkwidgetprivate.h" #include "gtkwindow.h" #include "gtkwindowprivate.h" #include "gtkeventcontrollerkey.h" #include "gtkgesturemultipress.h" #include "a11y/gtkmenushellaccessible.h" #define MENU_SHELL_TIMEOUT 500 #define MENU_POPUP_DELAY 225 #define MENU_POPDOWN_DELAY 1000 enum { DEACTIVATE, SELECTION_DONE, MOVE_CURRENT, ACTIVATE_CURRENT, CANCEL, CYCLE_FOCUS, MOVE_SELECTED, INSERT, LAST_SIGNAL }; enum { PROP_0, PROP_TAKE_FOCUS }; static void gtk_menu_shell_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_menu_shell_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_menu_shell_finalize (GObject *object); static void gtk_menu_shell_dispose (GObject *object); static gboolean gtk_menu_shell_key_press (GtkEventControllerKey *key, guint keyval, guint keycode, GdkModifierType modifiers, GtkWidget *widget); static void gtk_menu_shell_root (GtkWidget *widget); static void multi_press_pressed (GtkGestureMultiPress *gesture, gint n_press, gdouble x, gdouble y, GtkMenuShell *menu_shell); static void multi_press_released (GtkGestureMultiPress *gesture, gint n_press, gdouble x, gdouble y, GtkMenuShell *menu_shell); static void multi_press_stopped (GtkGestureMultiPress *gesture, GtkMenuShell *menu_shell); 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, 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 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, guint keycode, GdkModifierType state, guint group); static gboolean gtk_menu_shell_real_move_selected (GtkMenuShell *menu_shell, gint distance); static guint menu_shell_signals[LAST_SIGNAL] = { 0 }; G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (GtkMenuShell, gtk_menu_shell, GTK_TYPE_CONTAINER) static void gtk_menu_shell_class_init (GtkMenuShellClass *klass) { GObjectClass *object_class; GtkWidgetClass *widget_class; GtkContainerClass *container_class; GtkBindingSet *binding_set; object_class = (GObjectClass*) klass; widget_class = (GtkWidgetClass*) klass; container_class = (GtkContainerClass*) klass; object_class->set_property = gtk_menu_shell_set_property; object_class->get_property = gtk_menu_shell_get_property; object_class->finalize = gtk_menu_shell_finalize; object_class->dispose = gtk_menu_shell_dispose; widget_class->root = gtk_menu_shell_root; 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, NULL, 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, NULL, G_TYPE_NONE, 0); /** * GtkMenuShell::move-current: * @menushell: the object which received the signal * @direction: the direction to move * * A 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, NULL, 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, NULL, 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, NULL, 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, NULL, 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 */ 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. **/ 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); g_signal_set_va_marshaller (menu_shell_signals[INSERT], G_OBJECT_CLASS_TYPE (object_class), _gtk_marshal_VOID__OBJECT_INTv); 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(). **/ 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_PARAM_EXPLICIT_NOTIFY)); gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_SHELL_ACCESSIBLE); } static GType gtk_menu_shell_child_type (GtkContainer *container) { return GTK_TYPE_MENU_ITEM; } static void gtk_menu_shell_init (GtkMenuShell *menu_shell) { GtkWidget *widget = GTK_WIDGET (menu_shell); GtkEventController *controller; menu_shell->priv = gtk_menu_shell_get_instance_private (menu_shell); menu_shell->priv->take_focus = TRUE; controller = gtk_event_controller_key_new (); g_signal_connect (controller, "key-pressed", G_CALLBACK (gtk_menu_shell_key_press), widget); gtk_widget_add_controller (widget, controller); gtk_widget_set_has_surface (widget, FALSE); controller = GTK_EVENT_CONTROLLER (gtk_gesture_multi_press_new ()); gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (controller), 0); g_signal_connect (controller, "pressed", G_CALLBACK (multi_press_pressed), menu_shell); g_signal_connect (controller, "released", G_CALLBACK (multi_press_released), menu_shell); g_signal_connect (controller, "stopped", G_CALLBACK (multi_press_stopped), menu_shell); gtk_widget_add_controller (widget, controller); } static void gtk_menu_shell_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (object); switch (prop_id) { case PROP_TAKE_FOCUS: gtk_menu_shell_set_take_focus (menu_shell, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_menu_shell_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (object); switch (prop_id) { case PROP_TAKE_FOCUS: g_value_set_boolean (value, gtk_menu_shell_get_take_focus (menu_shell)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_menu_shell_finalize (GObject *object) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (object); GtkMenuShellPrivate *priv = menu_shell->priv; if (priv->mnemonic_hash) _gtk_mnemonic_hash_free (priv->mnemonic_hash); if (priv->key_hash) _gtk_key_hash_free (priv->key_hash); G_OBJECT_CLASS (gtk_menu_shell_parent_class)->finalize (object); } static void gtk_menu_shell_dispose (GObject *object) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (object); g_clear_pointer (&menu_shell->priv->tracker, gtk_menu_tracker_free); gtk_menu_shell_deactivate (menu_shell); G_OBJECT_CLASS (gtk_menu_shell_parent_class)->dispose (object); } /** * gtk_menu_shell_append: * @menu_shell: a #GtkMenuShell * @child: (type Gtk.MenuItem): The #GtkMenuItem to add * * Adds a new #GtkMenuItem to the end of the menu shell's * item list. */ void gtk_menu_shell_append (GtkMenuShell *menu_shell, GtkWidget *child) { gtk_menu_shell_insert (menu_shell, child, -1); } /** * gtk_menu_shell_prepend: * @menu_shell: a #GtkMenuShell * @child: The #GtkMenuItem to add * * Adds a new #GtkMenuItem to the beginning of the menu shell's * item list. */ void gtk_menu_shell_prepend (GtkMenuShell *menu_shell, GtkWidget *child) { gtk_menu_shell_insert (menu_shell, child, 0); } /** * gtk_menu_shell_insert: * @menu_shell: a #GtkMenuShell * @child: The #GtkMenuItem to add * @position: The position in the item list where @child * is added. Positions are numbered from 0 to n-1 * * Adds a new #GtkMenuItem to the menu shell’s item list * at the position indicated by @position. */ void gtk_menu_shell_insert (GtkMenuShell *menu_shell, GtkWidget *child, gint position) { g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell)); g_return_if_fail (GTK_IS_MENU_ITEM (child)); g_signal_emit (menu_shell, menu_shell_signals[INSERT], 0, child, position); } static void gtk_menu_shell_real_insert (GtkMenuShell *menu_shell, GtkWidget *child, gint position) { GtkMenuShellPrivate *priv = menu_shell->priv; priv->children = g_list_insert (priv->children, child, position); if (gtk_widget_get_parent (child) == NULL) 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_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_grab_add (GTK_WIDGET (menu_shell)); priv->have_grab = TRUE; priv->active = TRUE; } } static void gtk_menu_shell_deactivate_and_emit_done (GtkMenuShell *menu_shell) { gtk_menu_shell_deactivate (menu_shell); g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0); } static GtkMenuShell * gtk_menu_shell_get_toplevel_shell (GtkMenuShell *menu_shell) { while (menu_shell->priv->parent_menu_shell) menu_shell = GTK_MENU_SHELL (menu_shell->priv->parent_menu_shell); return menu_shell; } static void multi_press_stopped (GtkGestureMultiPress *gesture, GtkMenuShell *menu_shell) { GtkMenuShellPrivate *priv = menu_shell->priv; GdkSurface *surface; GdkEvent *event; event = gtk_get_current_event (); if (!event) return; if (gdk_event_get_grab_surface (event, &surface)) { if (priv->have_xgrab && surface == NULL) { /* Unset the active menu item so gtk_menu_popdown() doesn't see it. */ gtk_menu_shell_deselect (menu_shell); gtk_menu_shell_deactivate_and_emit_done (menu_shell); } } g_object_unref (event); } static void multi_press_pressed (GtkGestureMultiPress *gesture, gint n_press, gdouble x, gdouble y, GtkMenuShell *menu_shell) { GtkMenuShellPrivate *priv = menu_shell->priv; GtkWidget *menu_item; GdkEvent *event; event = gtk_get_current_event (); menu_item = gtk_get_event_target_with_type (event, GTK_TYPE_MENU_ITEM); if (menu_item && _gtk_menu_item_is_selectable (menu_item) && gtk_widget_get_parent (menu_item) == GTK_WIDGET (menu_shell)) { if (menu_item != menu_shell->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 (menu_shell)->submenu_placement != GTK_TOP_BOTTOM) gtk_menu_shell_select_item (menu_shell, menu_item); } if (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; } } if (!priv->active || !priv->button) { gboolean initially_active = priv->active; guint button; guint32 time; button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)); time = gdk_event_get_time (event); priv->button = button; if (menu_item) { if (_gtk_menu_item_is_selectable (menu_item) && gtk_widget_get_parent (menu_item) == GTK_WIDGET (menu_shell) && menu_item != priv->active_menu_item) { priv->active = TRUE; if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement == GTK_TOP_BOTTOM) { priv->activate_time = time; gtk_menu_shell_select_item (menu_shell, menu_item); } } } else if (!initially_active) { gtk_menu_shell_deactivate (menu_shell); gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED); } } g_object_unref (event); } static void multi_press_released (GtkGestureMultiPress *gesture, gint n_press, gdouble x, gdouble y, GtkMenuShell *menu_shell) { GtkMenuShellPrivate *priv = menu_shell->priv; GtkMenuShell *parent_shell = GTK_MENU_SHELL (priv->parent_menu_shell); gboolean activated_submenu = FALSE; guint new_button; guint32 time; GdkEvent *event; event = gtk_get_current_event (); new_button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)); time = gdk_event_get_time (event); gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED); if (parent_shell) { /* If a submenu was just activated, it is its shell which is receiving * the button release event. In this case, we must check the parent * shell to know about the submenu state. */ activated_submenu = parent_shell->priv->activated_submenu; parent_shell->priv->activated_submenu = FALSE; } if (priv->parent_menu_shell && (time - GTK_MENU_SHELL (priv->parent_menu_shell)->priv->activate_time) < MENU_SHELL_TIMEOUT) { /* The button-press originated in the parent menu bar and we are * a pop-up menu. It was a quick press-and-release so we don't want * to activate an item but we leave the popup in place instead. * https://bugzilla.gnome.org/show_bug.cgi?id=703069 */ GTK_MENU_SHELL (priv->parent_menu_shell)->priv->activate_time = 0; return; } if (priv->active) { GtkWidget *menu_item; guint button = priv->button; priv->button = 0; if (button && (new_button != button) && priv->parent_menu_shell) { gtk_menu_shell_deactivate_and_emit_done (gtk_menu_shell_get_toplevel_shell (menu_shell)); return; } if ((time - priv->activate_time) <= MENU_SHELL_TIMEOUT) { /* 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; return; } menu_item = gtk_get_event_target_with_type (event, GTK_TYPE_MENU_ITEM); if (menu_item) { GtkWidget *submenu = GTK_MENU_ITEM (menu_item)->priv->submenu; GtkWidget *parent_menu_item_shell = gtk_widget_get_parent (menu_item); if (!_gtk_menu_item_is_selectable (GTK_WIDGET (menu_item))) return; if (submenu == NULL) { gtk_menu_shell_activate_item (menu_shell, GTK_WIDGET (menu_item), TRUE); return; } else if (GTK_MENU_SHELL (parent_menu_item_shell)->priv->parent_menu_shell && (activated_submenu || GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement != GTK_TOP_BOTTOM)) { GTimeVal *popup_time; gint64 usec_since_popup = 0; popup_time = g_object_get_data (G_OBJECT (menu_shell), "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 (menu_shell), "gtk-menu-exact-popup-time", NULL); } /* Only close the submenu on click if we opened the * menu explicitly (usec_since_popup == 0) or * enough time has passed since it was opened by * GtkMenuItem's timeout (usec_since_popup > delay). */ if (!activated_submenu && (usec_since_popup == 0 || usec_since_popup > MENU_POPDOWN_DELAY * 1000)) { _gtk_menu_item_popdown_submenu (menu_item); } else { gtk_menu_item_select (GTK_MENU_ITEM (menu_item)); } return; } } gtk_menu_shell_deactivate_and_emit_done (gtk_menu_shell_get_toplevel_shell (menu_shell)); } g_object_unref (event); } void _gtk_menu_shell_set_keyboard_mode (GtkMenuShell *menu_shell, gboolean keyboard_mode) { menu_shell->priv->keyboard_mode = keyboard_mode; } gboolean _gtk_menu_shell_get_keyboard_mode (GtkMenuShell *menu_shell) { return menu_shell->priv->keyboard_mode; } void _gtk_menu_shell_update_mnemonics (GtkMenuShell *menu_shell) { GtkMenuShell *target; gboolean found; gboolean mnemonics_visible; target = menu_shell; found = FALSE; while (target) { GtkMenuShellPrivate *priv = target->priv; GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (target)); /* The idea with keyboard mode is that once you start using * the keyboard to navigate the menus, we show mnemonics * until the menu navigation is over. To that end, we spread * the keyboard mode upwards in the menu hierarchy here. * Also see gtk_menu_popup, where we inherit it downwards. */ if (menu_shell->priv->keyboard_mode) target->priv->keyboard_mode = TRUE; /* While navigating menus, the first parent menu with an active * item is the one where mnemonics are effective, as can be seen * in gtk_menu_shell_key_press below. * We also show mnemonics in context menus. The grab condition is * necessary to ensure we remove underlines from menu bars when * dismissing menus. */ mnemonics_visible = target->priv->keyboard_mode && (((target->priv->active_menu_item || priv->in_unselectable_item) && !found) || (target == menu_shell && !target->priv->parent_menu_shell && gtk_widget_has_grab (GTK_WIDGET (target)))); /* While menus are up, only show underlines inside the menubar, * not in the entire window. */ if (GTK_IS_MENU_BAR (target)) { gtk_window_set_mnemonics_visible (GTK_WINDOW (toplevel), FALSE); _gtk_label_mnemonics_visible_apply_recursively (GTK_WIDGET (target), mnemonics_visible); } else gtk_window_set_mnemonics_visible (GTK_WINDOW (toplevel), mnemonics_visible); if (target->priv->active_menu_item || priv->in_unselectable_item) found = TRUE; target = GTK_MENU_SHELL (target->priv->parent_menu_shell); } } static gboolean gtk_menu_shell_key_press (GtkEventControllerKey *key, guint keyval, guint keycode, GdkModifierType modifiers, GtkWidget *widget) { GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget); GtkMenuShellPrivate *priv = menu_shell->priv; priv->keyboard_mode = TRUE; if (!(priv->active_menu_item || priv->in_unselectable_item) && priv->parent_menu_shell) return gtk_event_controller_key_forward (key, priv->parent_menu_shell); return gtk_menu_shell_activate_mnemonic (menu_shell, keycode, modifiers, gtk_event_controller_key_get_group (key)); } static void gtk_menu_shell_root (GtkWidget *widget) { GTK_WIDGET_CLASS (gtk_menu_shell_parent_class)->root (widget); 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, 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_grab_remove (GTK_WIDGET (menu_shell)); } if (priv->have_xgrab) { gdk_seat_ungrab (gdk_device_get_seat (priv->grab_pointer)); priv->have_xgrab = FALSE; } priv->keyboard_mode = FALSE; _gtk_menu_shell_set_grab_device (menu_shell, NULL); _gtk_menu_shell_update_mnemonics (menu_shell); } } /* 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; GtkMenuShellClass *class; g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell)); g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); priv = menu_shell->priv; 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; 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; _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; g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell)); priv = menu_shell->priv; 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 { parent_menu_shell->priv->selection_done_coming_soon = TRUE; 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) { GtkMenuShell *parent_menu_shell = slist->data; g_signal_emit (parent_menu_shell, menu_shell_signals[SELECTION_DONE], 0); parent_menu_shell->priv->selection_done_coming_soon = FALSE; g_object_unref (slist->data); } g_slist_free (shells); g_object_unref (menu_shell); g_object_unref (menu_item); } /* Distance should be +/- 1 */ static gboolean gtk_menu_shell_real_move_selected (GtkMenuShell *menu_shell, gint distance) { GtkMenuShellPrivate *priv = menu_shell->priv; if (priv->active_menu_item) { GList *node = g_list_find (priv->children, priv->active_menu_item); GList *start_node = node; if (distance > 0) { node = node->next; while (node != start_node && (!node || !_gtk_menu_item_is_selectable (node->data))) { if (node) node = node->next; else node = priv->children; } } else { node = node->prev; while (node != start_node && (!node || !_gtk_menu_item_is_selectable (node->data))) { if (node) node = node->prev; else node = g_list_last (priv->children); } } if (node) gtk_menu_shell_select_item (menu_shell, node->data); } return TRUE; } /* Distance should be +/- 1 */ static void gtk_menu_shell_move_selected (GtkMenuShell *menu_shell, gint distance) { gboolean handled = FALSE; g_signal_emit (menu_shell, menu_shell_signals[MOVE_SELECTED], 0, distance, &handled); } /** * gtk_menu_shell_select_first: * @menu_shell: a #GtkMenuShell * @search_sensitive: if %TRUE, search for the first selectable * menu item, otherwise select nothing if * the first item isn’t sensitive. This * should be %FALSE if the menu is being * popped up initially. * * Select the first visible or selectable child of the menu shell. */ void gtk_menu_shell_select_first (GtkMenuShell *menu_shell, gboolean search_sensitive) { GtkMenuShellPrivate *priv; GList *tmp_list; g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell)); priv = menu_shell->priv; 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)) { gtk_menu_shell_select_item (menu_shell, child); return; } tmp_list = tmp_list->next; } } void _gtk_menu_shell_select_last (GtkMenuShell *menu_shell, gboolean search_sensitive) { GtkMenuShellPrivate *priv = menu_shell->priv; 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)) { gtk_menu_shell_select_item (menu_shell, child); return; } tmp_list = tmp_list->prev; } } static gboolean gtk_menu_shell_select_submenu_first (GtkMenuShell *menu_shell) { GtkMenuShellPrivate *priv = menu_shell->priv; GtkMenuItem *menu_item; if (priv->active_menu_item == NULL) return FALSE; menu_item = GTK_MENU_ITEM (priv->active_menu_item); if (menu_item->priv->submenu) { _gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item), FALSE); gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->priv->submenu), TRUE); if (GTK_MENU_SHELL (menu_item->priv->submenu)->priv->active_menu_item) return TRUE; } return FALSE; } /* Moves the current menu item in direction 'direction': * * - GTK_MENU_DIR_PARENT: To the parent menu shell * - GTK_MENU_DIR_CHILD: To the child menu shell (if this item has a submenu). * - GTK_MENU_DIR_NEXT/PREV: To the next or previous item in this menu. * * As a bit of a hack to get movement between menus and * menubars working, if submenu_placement is different for * the menu and its MenuShell then the following apply: * * - For “parent” the current menu is not just moved to * the parent, but moved to the previous entry in the parent * - For 'child', if there is no child, then current is * moved to the next item in the parent. * * Note that the above explanation of ::move_current was written * before menus and menubars had support for RTL flipping and * different packing directions, and therefore only applies for * when text direction and packing direction are both left-to-right. */ static void gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell, GtkMenuDirectionType direction) { GtkMenuShellPrivate *priv = menu_shell->priv; GtkMenuShell *parent_menu_shell = NULL; gboolean had_selection; priv->in_unselectable_item = FALSE; had_selection = priv->active_menu_item != NULL; if (priv->parent_menu_shell) parent_menu_shell = GTK_MENU_SHELL (priv->parent_menu_shell); switch (direction) { case GTK_MENU_DIR_PARENT: if (parent_menu_shell) { if (GTK_MENU_SHELL_GET_CLASS (parent_menu_shell)->submenu_placement == GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement) gtk_menu_shell_deselect (menu_shell); else { 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) { 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; default: break; } } /* Activate the current item. If 'force_hide' is true, hide * the current menu item always. Otherwise, only hide * it if menu_item->klass->hide_on_activate is true. */ static void gtk_real_menu_shell_activate_current (GtkMenuShell *menu_shell, gboolean force_hide) { GtkMenuShellPrivate *priv = menu_shell->priv; if (priv->active_menu_item && _gtk_menu_item_is_selectable (priv->active_menu_item)) { if (GTK_MENU_ITEM (priv->active_menu_item)->priv->submenu == NULL) gtk_menu_shell_activate_item (menu_shell, priv->active_menu_item, force_hide); else gtk_menu_shell_select_submenu_first (menu_shell); } } static void gtk_real_menu_shell_cancel (GtkMenuShell *menu_shell) { /* Unset the active menu item so gtk_menu_popdown() doesn't see it. */ gtk_menu_shell_deselect (menu_shell); gtk_menu_shell_deactivate (menu_shell); g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0); } static void gtk_real_menu_shell_cycle_focus (GtkMenuShell *menu_shell, GtkDirectionType dir) { while (menu_shell && !GTK_IS_MENU_BAR (menu_shell)) { if (menu_shell->priv->parent_menu_shell) menu_shell = GTK_MENU_SHELL (menu_shell->priv->parent_menu_shell); else menu_shell = NULL; } if (menu_shell) _gtk_menu_bar_cycle_focus (GTK_MENU_BAR (menu_shell), dir); } gint _gtk_menu_shell_get_popup_delay (GtkMenuShell *menu_shell) { GtkMenuShellClass *klass = GTK_MENU_SHELL_GET_CLASS (menu_shell); if (klass->get_popup_delay) { return klass->get_popup_delay (menu_shell); } else { return MENU_POPUP_DELAY; } } /** * gtk_menu_shell_cancel: * @menu_shell: a #GtkMenuShell * * Cancels the selection within the menu shell. */ 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) { GtkMnemonicHash *mnemonic_hash = gtk_menu_shell_get_mnemonic_hash (menu_shell, FALSE); GdkKeymap *keymap = gdk_display_get_keymap (gtk_widget_get_display (widget)); 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, guint keycode, GdkModifierType state, guint group) { 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, keycode, state, gtk_accelerator_get_default_mod_mask (), 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; g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell)); g_return_if_fail (device == NULL || GDK_IS_DEVICE (device)); priv = menu_shell->priv; 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. */ gboolean gtk_menu_shell_get_take_focus (GtkMenuShell *menu_shell) { g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE); return menu_shell->priv->take_focus; } /** * gtk_menu_shell_set_take_focus: * @menu_shell: a #GtkMenuShell * @take_focus: %TRUE if the menu shell should take the keyboard * focus on popup * * If @take_focus is %TRUE (the default) the menu shell will take * the keyboard focus so that it will receive all keyboard events * which is needed to enable keyboard navigation in menus. * * Setting @take_focus to %FALSE is useful only for special applications * like virtual keyboard implementations which should not take keyboard * focus. * * The @take_focus state of a menu or menu bar is automatically * propagated to submenus whenever a submenu is popped up, so you * don’t have to worry about recursively setting it for your entire * menu hierarchy. Only when programmatically picking a submenu and * popping it up manually, the @take_focus property of the submenu * needs to be set explicitly. * * Note that setting it to %FALSE has side-effects: * * If the focus is in some other app, it keeps the focus and keynav in * the menu doesn’t work. Consequently, keynav on the menu will only * work if the focus is on some toplevel owned by the onscreen keyboard. * * To avoid confusing the user, menus with @take_focus set to %FALSE * should not display mnemonics or accelerators, since it cannot be * guaranteed that they will work. */ 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 = menu_shell->priv; take_focus = !!take_focus; 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 */ 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 */ GtkWidget * gtk_menu_shell_get_parent_shell (GtkMenuShell *menu_shell) { g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), NULL); return menu_shell->priv->parent_menu_shell; } static void gtk_menu_shell_item_activate (GtkMenuItem *menuitem, gpointer user_data) { GtkMenuTrackerItem *item = user_data; gtk_menu_tracker_item_activated (item); } static void gtk_menu_shell_submenu_shown (GtkWidget *submenu, gpointer user_data) { GtkMenuTrackerItem *item = user_data; gtk_menu_tracker_item_request_submenu_shown (item, TRUE); } static void gtk_menu_shell_submenu_hidden (GtkWidget *submenu, gpointer user_data) { GtkMenuTrackerItem *item = user_data; if (!GTK_MENU_SHELL (submenu)->priv->selection_done_coming_soon) gtk_menu_tracker_item_request_submenu_shown (item, FALSE); } static void gtk_menu_shell_submenu_selection_done (GtkWidget *submenu, gpointer user_data) { GtkMenuTrackerItem *item = user_data; if (GTK_MENU_SHELL (submenu)->priv->selection_done_coming_soon) gtk_menu_tracker_item_request_submenu_shown (item, FALSE); } static void gtk_menu_shell_tracker_remove_func (gint position, gpointer user_data) { GtkMenuShell *menu_shell = user_data; GtkWidget *child; child = g_list_nth_data (menu_shell->priv->children, position); /* We use destroy here because in the case of an item with a submenu, * the attached-to from the submenu holds a ref on the item and a * simple gtk_container_remove() isn't good enough to break that. */ gtk_widget_destroy (child); } static void gtk_menu_shell_tracker_insert_func (GtkMenuTrackerItem *item, gint position, gpointer user_data) { GtkMenuShell *menu_shell = user_data; GtkWidget *widget; if (gtk_menu_tracker_item_get_is_separator (item)) { const gchar *label; widget = gtk_separator_menu_item_new (); /* For separators, we may have a section heading, so check the * "label" property. * * Note: we only do this once, and we only do it if the label is * non-NULL because even setting a NULL label on the separator * will be enough to create a GtkLabel and add it, changing the * appearance in the process. */ label = gtk_menu_tracker_item_get_label (item); if (label) gtk_menu_item_set_label (GTK_MENU_ITEM (widget), label); } else if (gtk_menu_tracker_item_get_has_link (item, G_MENU_LINK_SUBMENU)) { GtkMenuShell *submenu; widget = gtk_model_menu_item_new (); g_object_bind_property (item, "label", widget, "text", G_BINDING_SYNC_CREATE); submenu = GTK_MENU_SHELL (gtk_menu_new ()); gtk_widget_hide (GTK_WIDGET (submenu)); /* We recurse directly here: we could use an idle instead to * prevent arbitrary recursion depth. We could also do it * lazy... */ submenu->priv->tracker = gtk_menu_tracker_new_for_item_link (item, G_MENU_LINK_SUBMENU, TRUE, FALSE, gtk_menu_shell_tracker_insert_func, gtk_menu_shell_tracker_remove_func, submenu); gtk_menu_item_set_submenu (GTK_MENU_ITEM (widget), GTK_WIDGET (submenu)); if (gtk_menu_tracker_item_get_should_request_show (item)) { /* We don't request show in the strictest sense of the * word: we just notify when we are showing and don't * bother waiting for the reply. * * This could be fixed one day, but it would be slightly * complicated and would have a strange interaction with * the submenu pop-up delay. * * Note: 'item' is already kept alive from above. */ g_signal_connect (submenu, "show", G_CALLBACK (gtk_menu_shell_submenu_shown), item); g_signal_connect (submenu, "hide", G_CALLBACK (gtk_menu_shell_submenu_hidden), item); g_signal_connect (submenu, "selection-done", G_CALLBACK (gtk_menu_shell_submenu_selection_done), item); } } else { widget = gtk_model_menu_item_new (); /* We bind to "text" instead of "label" because GtkModelMenuItem * uses this property (along with "icon") to control its child * widget. Once this is merged into GtkMenuItem we can go back to * using "label". */ g_object_bind_property (item, "label", widget, "text", G_BINDING_SYNC_CREATE); g_object_bind_property (item, "icon", widget, "icon", G_BINDING_SYNC_CREATE); g_object_bind_property (item, "sensitive", widget, "sensitive", G_BINDING_SYNC_CREATE); g_object_bind_property (item, "role", widget, "action-role", G_BINDING_SYNC_CREATE); g_object_bind_property (item, "toggled", widget, "toggled", G_BINDING_SYNC_CREATE); g_object_bind_property (item, "accel", widget, "accel", G_BINDING_SYNC_CREATE); g_signal_connect (widget, "activate", G_CALLBACK (gtk_menu_shell_item_activate), item); gtk_widget_show (widget); } /* TODO: drop this when we have bindings that ref the source */ g_object_set_data_full (G_OBJECT (widget), "GtkMenuTrackerItem", g_object_ref (item), g_object_unref); gtk_menu_shell_insert (menu_shell, widget, position); } /** * gtk_menu_shell_bind_model: * @menu_shell: a #GtkMenuShell * @model: (allow-none): the #GMenuModel to bind to or %NULL to remove * binding * @action_namespace: (allow-none): the namespace for actions in @model * @with_separators: %TRUE if toplevel items in @shell should have * separators between them * * Establishes a binding between a #GtkMenuShell and a #GMenuModel. * * The contents of @shell are removed and then refilled with menu items * according to @model. When @model changes, @shell is updated. * Calling this function twice on @shell with different @model will * cause the first binding to be replaced with a binding to the new * model. If @model is %NULL then any previous binding is undone and * all children are removed. * * @with_separators determines if toplevel items (eg: sections) have * separators inserted between them. This is typically desired for * menus but doesn’t make sense for menubars. * * If @action_namespace is non-%NULL then the effect is as if all * actions mentioned in the @model have their names prefixed with the * namespace, plus a dot. For example, if the action “quit” is * mentioned and @action_namespace is “app” then the effective action * name is “app.quit”. * * This function uses #GtkActionable to define the action name and * target values on the created menu items. If you want to use an * action group other than “app” and “win”, or if you want to use a * #GtkMenuShell outside of a #GtkApplicationWindow, then you will need * to attach your own action group to the widget hierarchy using * gtk_widget_insert_action_group(). As an example, if you created a * group with a “quit” action and inserted it with the name “mygroup” * then you would use the action name “mygroup.quit” in your * #GMenuModel. * * For most cases you are probably better off using * gtk_menu_new_from_model() or gtk_menu_bar_new_from_model() or just * directly passing the #GMenuModel to gtk_application_set_app_menu() or * gtk_application_set_menubar(). */ void gtk_menu_shell_bind_model (GtkMenuShell *menu_shell, GMenuModel *model, const gchar *action_namespace, gboolean with_separators) { GtkActionMuxer *muxer; g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell)); g_return_if_fail (model == NULL || G_IS_MENU_MODEL (model)); muxer = _gtk_widget_get_action_muxer (GTK_WIDGET (menu_shell), TRUE); g_clear_pointer (&menu_shell->priv->tracker, gtk_menu_tracker_free); while (menu_shell->priv->children) gtk_container_remove (GTK_CONTAINER (menu_shell), menu_shell->priv->children->data); if (model) menu_shell->priv->tracker = gtk_menu_tracker_new (GTK_ACTION_OBSERVABLE (muxer), model, with_separators, TRUE, FALSE, action_namespace, gtk_menu_shell_tracker_insert_func, gtk_menu_shell_tracker_remove_func, menu_shell); }