/* GTK - The GIMP Toolkit
* Copyright © 2014 Red Hat , Inc .
*
* This library is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation ; either
* version 2 of the License , or ( at your option ) any later version .
*
* This library is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Lesser General Public License for more details .
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library . If not , see < http : //www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkpopovermenu.h"
#include "gtkpopovermenuprivate.h"
#include "gtkstack.h"
#include "gtkmenusectionboxprivate.h"
#include "gtkmenubutton.h"
#include "gtkactionmuxerprivate.h"
#include "gtkmenutrackerprivate.h"
#include "gtkpopoverprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkeventcontrollerfocus.h"
#include "gtkeventcontrollermotion.h"
#include "gtkmain.h"
#include "gtktypebuiltins.h"
#include "gtkmodelbuttonprivate.h"
#include "gtkpopovermenubar.h"
#include "gtkshortcutmanager.h"
#include "gtkshortcutcontroller.h"
#include "gtkbuildable.h"
#include "gtkscrolledwindow.h"
#include "gtkviewport.h"
/**
* GtkPopoverMenu :
*
* A subclass of ` GtkPopover ` that implements menu behavior .
*
* < picture >
* < source srcset = " menu - dark . png " media = " ( prefers - color - scheme : dark ) " >
* < img alt = " An example GtkPopoverMenu " src = " menu . png " >
* < / picture >
*
* ` GtkPopoverMenu ` treats its children like menus and allows switching
* between them . It can open submenus as traditional , nested submenus ,
* or in a more touch - friendly sliding fashion .
* The property [ property @ Gtk . PopoverMenu : flags ] controls this appearance .
*
* ` GtkPopoverMenu ` is meant to be used primarily with menu models ,
* using [ ctor @ Gtk . PopoverMenu . new_from_model ] . If you need to put
* other widgets such as a ` GtkSpinButton ` or a ` GtkSwitch ` into a popover ,
* you can use [ method @ Gtk . PopoverMenu . add_child ] .
*
* For more dialog - like behavior , use a plain ` GtkPopover ` .
*
* # # Menu models
*
* The XML format understood by ` GtkBuilder ` for ` GMenuModel ` consists
* of a toplevel ` < menu > ` element , which contains one or more ` < item > `
* elements . Each ` < item > ` element contains ` < attribute > ` and ` < link > `
* elements with a mandatory name attribute . ` < link > ` elements have the
* same content model as ` < menu > ` . Instead of ` < link name = " submenu " > `
* or ` < link name = " section " > ` , you can use ` < submenu > ` or ` < section > `
* elements .
*
* ` ` ` xml
* < menu id = ' app - menu ' >
* < section >
* < item >
* < attribute name = ' label ' translatable = ' yes ' > _ New Window < / attribute >
* < attribute name = ' action ' > app . new < / attribute >
* < / item >
* < item >
* < attribute name = ' label ' translatable = ' yes ' > _ About Sunny < / attribute >
* < attribute name = ' action ' > app . about < / attribute >
* < / item >
* < item >
* < attribute name = ' label ' translatable = ' yes ' > _ Quit < / attribute >
* < attribute name = ' action ' > app . quit < / attribute >
* < / item >
* < / section >
* < / menu >
* ` ` `
*
* Attribute values can be translated using gettext , like other ` GtkBuilder `
* content . ` < attribute > ` elements can be marked for translation with a
* ` translatable = " yes " ` attribute . It is also possible to specify message
* context and translator comments , using the context and comments attributes .
* To make use of this , the ` GtkBuilder ` must have been given the gettext
* domain to use .
*
* The following attributes are used when constructing menu items :
*
* - " label " : a user - visible string to display
* - " use - markup " : whether the text in the menu item includes [ Pango markup ] ( https : //docs.gtk.org/Pango/pango_markup.html)
* - " action " : the prefixed name of the action to trigger
* - " target " : the parameter to use when activating the action
* - " icon " and " verb - icon " : names of icons that may be displayed
* - " submenu - action " : name of an action that may be used to track
* whether a submenu is open
* - " hidden - when " : a string used to determine when the item will be hidden .
* Possible values include " action - disabled " , " action - missing " , " macos - menubar " .
* This is mainly useful for exported menus , see [ method @ Gtk . Application . set_menubar ] .
* - " custom " : a string used to match against the ID of a custom child added with
* [ method @ Gtk . PopoverMenu . add_child ] , [ method @ Gtk . PopoverMenuBar . add_child ] ,
* or in the ui file with ` < child type = " ID " > ` .
*
* The following attributes are used when constructing sections :
*
* - " label " : a user - visible string to use as section heading
* - " display - hint " : a string used to determine special formatting for the section .
* Possible values include " horizontal - buttons " , " circular - buttons " and
* " inline - buttons " . They all indicate that section should be
* displayed as a horizontal row of buttons .
* - " text - direction " : a string used to determine the ` GtkTextDirection ` to use
* when " display - hint " is set to " horizontal - buttons " . Possible values
* include " rtl " , " ltr " , and " none " .
*
* The following attributes are used when constructing submenus :
*
* - " label " : a user - visible string to display
* - " icon " : icon name to display
* - " gtk - macos - special " : ( macOS only , ignored by others ) Add special meaning to a menu
* in the macOS menu bar . See [ Using GTK on Apple macOS ] ( osx . html ) .
*
* Menu items will also show accelerators , which are usually associated
* with actions via [ method @ Gtk . Application . set_accels_for_action ] ,
* [ method @ WidgetClass . add_binding_action ] or
* [ method @ Gtk . ShortcutController . add_shortcut ] .
*
* # Shortcuts and Gestures
*
* ` GtkPopoverMenu ` supports the following keyboard shortcuts :
*
* - < kbd > Space < / kbd > activates the default widget .
*
* # CSS Nodes
*
* ` GtkPopoverMenu ` is just a subclass of ` GtkPopover ` that adds custom content
* to it , therefore it has the same CSS nodes . It is one of the cases that add
* a ` . menu ` style class to the main ` popover ` node .
*
* Menu items have nodes with name ` button ` and class ` . model ` . If a section
* display - hint is set , the section gets a node ` box ` with class ` horizontal `
* plus a class with the same text as the display hint . Note that said box may
* not be the direct ancestor of the item ` button ` s . Thus , for example , to style
* items in an ` inline - buttons ` section , select ` . inline - buttons button . model ` .
* Other things that may be of interest to style in menus include ` label ` nodes .
*
* # Accessibility
*
* ` GtkPopoverMenu ` uses the [ enum @ Gtk . AccessibleRole . menu ] role , and its
* items use the [ enum @ Gtk . AccessibleRole . menu_item ] ,
* [ enum @ Gtk . AccessibleRole . checkbox ] or [ enum @ Gtk . AccessibleRole . menu_item_radio ]
* roles , depending on the action they are connected to .
*/
typedef struct _GtkPopoverMenuClass GtkPopoverMenuClass;
struct _GtkPopoverMenu
{
GtkPopover parent_instance;
GtkWidget *active_item;
GtkWidget *open_submenu;
GtkWidget *parent_menu;
GMenuModel *model;
GtkPopoverMenuFlags flags;
};
struct _GtkPopoverMenuClass
{
GtkPopoverClass parent_class;
};
enum {
PROP_VISIBLE_SUBMENU = 1 ,
PROP_MENU_MODEL,
PROP_FLAGS,
N_PROPS
};
static GParamSpec *props[N_PROPS] = { NULL, };
static void gtk_popover_menu_buildable_iface_init (GtkBuildableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkPopoverMenu, gtk_popover_menu, GTK_TYPE_POPOVER,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_popover_menu_buildable_iface_init))
GtkWidget *
gtk_popover_menu_get_parent_menu (GtkPopoverMenu *menu)
{
return menu->parent_menu;
}
void
gtk_popover_menu_set_parent_menu (GtkPopoverMenu *menu,
GtkWidget *parent)
{
menu->parent_menu = parent;
}
GtkWidget *
gtk_popover_menu_get_open_submenu (GtkPopoverMenu *menu)
{
return menu->open_submenu;
}
void
gtk_popover_menu_set_open_submenu (GtkPopoverMenu *menu,
GtkWidget *submenu)
{
menu->open_submenu = submenu;
}
void
gtk_popover_menu_close_submenus (GtkPopoverMenu *menu)
{
GtkWidget *submenu;
submenu = menu->open_submenu;
if (submenu)
{
gtk_popover_menu_close_submenus (GTK_POPOVER_MENU (submenu));
gtk_widget_set_visible (submenu, FALSE );
gtk_popover_menu_set_open_submenu (menu, NULL);
}
}
GtkWidget *
gtk_popover_menu_get_active_item (GtkPopoverMenu *menu)
{
return menu->active_item;
}
void
gtk_popover_menu_set_active_item (GtkPopoverMenu *menu,
GtkWidget *item)
{
if (menu->active_item != item)
{
if (menu->active_item)
{
gtk_widget_unset_state_flags (menu->active_item, GTK_STATE_FLAG_SELECTED);
g_object_remove_weak_pointer (G_OBJECT (menu->active_item), (gpointer *)&menu->active_item);
}
menu->active_item = item;
if (menu->active_item)
{
GtkWidget *popover;
g_object_add_weak_pointer (G_OBJECT (menu->active_item), (gpointer *)&menu->active_item);
gtk_widget_set_state_flags (menu->active_item, GTK_STATE_FLAG_SELECTED, FALSE );
if (GTK_IS_MODEL_BUTTON (item))
g_object_get (item, "popover" , &popover, NULL);
else
popover = NULL;
if (!popover || popover != menu->open_submenu)
gtk_widget_grab_focus (menu->active_item);
g_clear_object (&popover);
}
}
}
static void
visible_submenu_changed (GObject *object,
GParamSpec *pspec,
GtkPopoverMenu *popover)
{
g_object_notify_by_pspec (G_OBJECT (popover), props[PROP_VISIBLE_SUBMENU]);
}
static void
focus_out (GtkEventController *controller,
GtkPopoverMenu *menu)
{
GtkRoot *root;
GtkWidget *new_focus;
root = gtk_widget_get_root (GTK_WIDGET (menu));
if (!root)
return ;
new_focus = gtk_root_get_focus (root);
if (!gtk_event_controller_focus_contains_focus (GTK_EVENT_CONTROLLER_FOCUS (controller)) &&
new_focus != NULL)
{
if (menu->parent_menu &&
GTK_POPOVER_MENU (menu->parent_menu)->open_submenu == (GtkWidget*) menu)
GTK_POPOVER_MENU (menu->parent_menu)->open_submenu = NULL;
gtk_popover_popdown (GTK_POPOVER (menu));
}
}
static void
leave_cb (GtkEventController *controller,
gpointer data)
{
if (!gtk_event_controller_motion_contains_pointer (GTK_EVENT_CONTROLLER_MOTION (controller)))
{
GtkWidget *target = gtk_event_controller_get_widget (controller);
gtk_popover_menu_set_active_item (GTK_POPOVER_MENU (target), NULL);
}
}
static void
gtk_popover_menu_init (GtkPopoverMenu *popover)
{
GtkWidget *sw;
GtkWidget *stack;
GtkEventController *controller;
GtkEventController **controllers;
guint n_controllers, i;
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_propagate_natural_width (GTK_SCROLLED_WINDOW (sw), TRUE );
gtk_scrolled_window_set_propagate_natural_height (GTK_SCROLLED_WINDOW (sw), TRUE );
gtk_popover_set_child (GTK_POPOVER (popover), sw);
stack = gtk_stack_new ();
gtk_stack_set_vhomogeneous (GTK_STACK (stack), FALSE );
gtk_stack_set_transition_type (GTK_STACK (stack), GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT);
gtk_stack_set_interpolate_size (GTK_STACK (stack), TRUE );
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), stack);
g_signal_connect (stack, "notify::visible-child-name" ,
G_CALLBACK (visible_submenu_changed), popover);
gtk_widget_add_css_class (GTK_WIDGET (popover), "menu" );
controller = gtk_event_controller_focus_new ();
g_signal_connect (controller, "leave" , G_CALLBACK (focus_out), popover);
gtk_widget_add_controller (GTK_WIDGET (popover), controller);
controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "notify::contains-pointer" , G_CALLBACK (leave_cb), popover);
gtk_widget_add_controller (GTK_WIDGET (popover), controller);
controllers = gtk_widget_list_controllers (GTK_WIDGET (popover), GTK_PHASE_CAPTURE, &n_controllers);
for (i = 0 ; i < n_controllers; i ++)
{
controller = controllers[i];
if (GTK_IS_SHORTCUT_CONTROLLER (controller) &&
strcmp (gtk_event_controller_get_name (controller), "gtk-shortcut-manager-capture" ) == 0 )
gtk_shortcut_controller_set_mnemonics_modifiers (GTK_SHORTCUT_CONTROLLER (controller), 0 );
}
g_free (controllers);
gtk_popover_set_cascade_popdown (GTK_POPOVER (popover), TRUE );
}
GtkWidget *
gtk_popover_menu_get_stack (GtkPopoverMenu *menu)
{
GtkWidget *sw = gtk_popover_get_child (GTK_POPOVER (menu));
GtkWidget *vp = gtk_scrolled_window_get_child (GTK_SCROLLED_WINDOW (sw));
GtkWidget *stack = gtk_viewport_get_child (GTK_VIEWPORT (vp));
return stack;
}
static void
gtk_popover_menu_dispose (GObject *object)
{
GtkPopoverMenu *popover = GTK_POPOVER_MENU (object);
if (popover->active_item)
{
g_clear_weak_pointer (&popover->active_item);
}
g_clear_object (&popover->model);
G_OBJECT_CLASS (gtk_popover_menu_parent_class)->dispose (object);
}
static void
gtk_popover_menu_map (GtkWidget *widget)
{
gtk_popover_menu_open_submenu (GTK_POPOVER_MENU (widget), "main" );
GTK_WIDGET_CLASS (gtk_popover_menu_parent_class)->map (widget);
}
static void
gtk_popover_menu_unmap (GtkWidget *widget)
{
GTK_WIDGET_CLASS (gtk_popover_menu_parent_class)->unmap (widget);
gtk_popover_menu_open_submenu (GTK_POPOVER_MENU (widget), "main" );
}
static void
gtk_popover_menu_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkPopoverMenu *menu = GTK_POPOVER_MENU (object);
switch (property_id)
{
case PROP_VISIBLE_SUBMENU:
g_value_set_string (value, gtk_stack_get_visible_child_name (GTK_STACK (gtk_popover_menu_get_stack (menu))));
break ;
case PROP_MENU_MODEL:
g_value_set_object (value, gtk_popover_menu_get_menu_model (menu));
break ;
case PROP_FLAGS:
g_value_set_flags (value, gtk_popover_menu_get_flags (menu));
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break ;
}
}
static void
gtk_popover_menu_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkPopoverMenu *menu = GTK_POPOVER_MENU (object);
switch (property_id)
{
case PROP_VISIBLE_SUBMENU:
gtk_stack_set_visible_child_name (GTK_STACK (gtk_popover_menu_get_stack (menu)), g_value_get_string (value));
break ;
case PROP_MENU_MODEL:
gtk_popover_menu_set_menu_model (menu, g_value_get_object (value));
break ;
case PROP_FLAGS:
gtk_popover_menu_set_flags (menu, g_value_get_flags (value));
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break ;
}
}
static gboolean
gtk_popover_menu_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkPopoverMenu *menu = GTK_POPOVER_MENU (widget);
if (gtk_widget_get_first_child (widget) == NULL)
{
return FALSE ;
}
else
{
if (menu->open_submenu)
{
if (gtk_widget_child_focus (menu->open_submenu, direction))
return TRUE ;
if (direction == GTK_DIR_LEFT)
{
if (menu->open_submenu)
{
gtk_popover_popdown (GTK_POPOVER (menu->open_submenu));
menu->open_submenu = NULL;
}
gtk_widget_grab_focus (menu->active_item);
return TRUE ;
}
return FALSE ;
}
if (gtk_widget_focus_move (widget, direction))
return TRUE ;
if (direction == GTK_DIR_LEFT || direction == GTK_DIR_RIGHT)
{
/* If we are part of a menubar, we want to let the
* menubar use left / right arrows for cycling , else
* we eat them .
*/
if (gtk_widget_get_ancestor (widget, GTK_TYPE_POPOVER_MENU_BAR) ||
(gtk_popover_menu_get_parent_menu (menu) &&
direction == GTK_DIR_LEFT))
return FALSE ;
else
return TRUE ;
}
/* Cycle around with up/down arrows and (Shift+)Tab when modal */
else if (gtk_popover_get_autohide (GTK_POPOVER (menu)))
{
GtkWidget *p = gtk_root_get_focus (gtk_widget_get_root (widget));
/* In the case where the popover doesn't have any focusable child, if
* the menu doesn ' t have any item for example , then the focus will end
* up out of the popover , hence creating an infinite loop below . To
* avoid this , just say we had focus and stop here .
*/
if (!gtk_widget_is_ancestor (p, widget) && p != widget)
return TRUE ;
/* cycle around */
for (;
p != widget;
p = gtk_widget_get_parent (p))
{
gtk_widget_set_focus_child (p, NULL);
}
if (gtk_widget_focus_move (widget, direction))
return TRUE ;
}
}
return FALSE ;
}
static void
add_tab_bindings (GtkWidgetClass *widget_class,
GdkModifierType modifiers,
GtkDirectionType direction)
{
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_Tab, modifiers,
"move-focus" ,
"(i)" , direction);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_KP_Tab, modifiers,
"move-focus" ,
"(i)" , direction);
}
static void
add_arrow_bindings (GtkWidgetClass *widget_class,
guint keysym,
GtkDirectionType direction)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_widget_class_add_binding_signal (widget_class,
keysym, GDK_NO_MODIFIER_MASK,
"move-focus" ,
"(i)" , direction);
gtk_widget_class_add_binding_signal (widget_class,
keysym, GDK_CONTROL_MASK,
"move-focus" ,
"(i)" , direction);
gtk_widget_class_add_binding_signal (widget_class,
keypad_keysym, GDK_NO_MODIFIER_MASK,
"move-focus" ,
"(i)" , direction);
gtk_widget_class_add_binding_signal (widget_class,
keypad_keysym, GDK_CONTROL_MASK,
"move-focus" ,
"(i)" , direction);
}
static void
gtk_popover_menu_show (GtkWidget *widget)
{
gtk_popover_menu_set_open_submenu (GTK_POPOVER_MENU (widget), NULL);
GTK_WIDGET_CLASS (gtk_popover_menu_parent_class)->show (widget);
}
static void
gtk_popover_menu_move_focus (GtkWidget *widget,
GtkDirectionType direction)
{
gtk_popover_set_mnemonics_visible (GTK_POPOVER (widget), TRUE );
GTK_WIDGET_CLASS (gtk_popover_menu_parent_class)->move_focus (widget, direction);
}
static void
gtk_popover_menu_root (GtkWidget *widget)
{
GTK_WIDGET_CLASS (gtk_popover_menu_parent_class)->root (widget);
gtk_accessible_update_property (GTK_ACCESSIBLE (widget),
GTK_ACCESSIBLE_PROPERTY_ORIENTATION, GTK_ORIENTATION_VERTICAL,
-1 );
}
static void
gtk_popover_menu_class_init (GtkPopoverMenuClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = gtk_popover_menu_dispose;
object_class->set_property = gtk_popover_menu_set_property;
object_class->get_property = gtk_popover_menu_get_property;
widget_class->root = gtk_popover_menu_root;
widget_class->map = gtk_popover_menu_map;
widget_class->unmap = gtk_popover_menu_unmap;
widget_class->focus = gtk_popover_menu_focus;
widget_class->show = gtk_popover_menu_show;
widget_class->move_focus = gtk_popover_menu_move_focus;
/**
* GtkPopoverMenu : visible - submenu :
*
* The name of the visible submenu .
*/
props[PROP_VISIBLE_SUBMENU] = g_param_spec_string ("visible-submenu" , NULL, NULL,
NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME);
/**
* GtkPopoverMenu : menu - model :
*
* The model from which the menu is made .
*/
props[PROP_MENU_MODEL] = g_param_spec_object ("menu-model" , NULL, NULL,
G_TYPE_MENU_MODEL,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME);
/**
* GtkPopoverMenu : flags :
*
* The flags that @ popover uses to create / display a menu from its model .
*
* If a model is set and the flags change , contents are rebuilt , so if setting
* properties individually , set flags before model to avoid a redundant rebuild .
*
* Since : 4 . 14
*/
props[PROP_FLAGS] = g_param_spec_flags ("flags" , NULL, NULL,
GTK_TYPE_POPOVER_MENU_FLAGS,
GTK_POPOVER_MENU_SLIDING,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME
| G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, N_PROPS, props);
add_arrow_bindings (widget_class, GDK_KEY_Up, GTK_DIR_UP);
add_arrow_bindings (widget_class, GDK_KEY_Down, GTK_DIR_DOWN);
add_arrow_bindings (widget_class, GDK_KEY_Left, GTK_DIR_LEFT);
add_arrow_bindings (widget_class, GDK_KEY_Right, GTK_DIR_RIGHT);
add_tab_bindings (widget_class, 0 , GTK_DIR_TAB_FORWARD);
add_tab_bindings (widget_class, GDK_CONTROL_MASK, GTK_DIR_TAB_FORWARD);
add_tab_bindings (widget_class, GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
add_tab_bindings (widget_class, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_Return, GDK_NO_MODIFIER_MASK,
"activate-default" , NULL);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_ISO_Enter, GDK_NO_MODIFIER_MASK,
"activate-default" , NULL);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_KP_Enter, GDK_NO_MODIFIER_MASK,
"activate-default" , NULL);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_space, GDK_NO_MODIFIER_MASK,
"activate-default" , NULL);
gtk_widget_class_add_binding_signal (widget_class, GDK_KEY_KP_Space, GDK_NO_MODIFIER_MASK,
"activate-default" , NULL);
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_MENU);
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_popover_menu_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
if (GTK_IS_WIDGET (child))
{
if (!gtk_popover_menu_add_child (GTK_POPOVER_MENU (buildable), GTK_WIDGET (child), type))
g_warning ("No such custom attribute: %s" , type);
}
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_popover_menu_buildable_iface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_popover_menu_buildable_add_child;
}
static void
gtk_popover_menu_rebuild_contents (GtkPopoverMenu *popover)
{
GtkWidget *stack;
GtkWidget *child;
stack = gtk_popover_menu_get_stack (popover);
while ((child = gtk_widget_get_first_child (stack)))
gtk_stack_remove (GTK_STACK (stack), child);
if (popover->model)
gtk_menu_section_box_new_toplevel (popover, popover->model, popover->flags);
}
/**
* gtk_popover_menu_new :
*
* Creates a new popover menu .
*
* Returns : a new ` GtkPopoverMenu `
*/
GtkWidget *
gtk_popover_menu_new (void )
{
GtkWidget *popover;
popover = g_object_new (GTK_TYPE_POPOVER_MENU,
"autohide" , TRUE ,
NULL);
return popover;
}
/*<private>
* gtk_popover_menu_open_submenu :
* @ popover : a ` GtkPopoverMenu `
* @ name : the name of the menu to switch to
*
* Opens a submenu of the @ popover . The @ name
* must be one of the names given to the submenus
* of @ popover with ` GtkPopoverMenu : submenu ` , or
* " main " to switch back to the main menu .
*
* ` GtkModelButton ` will open submenus automatically
* when the ` GtkModelButton : menu - name ` property is set ,
* so this function is only needed when you are using
* other kinds of widgets to initiate menu changes .
*/
void
gtk_popover_menu_open_submenu (GtkPopoverMenu *popover,
const char *name)
{
GtkWidget *stack;
g_return_if_fail (GTK_IS_POPOVER_MENU (popover));
stack = gtk_popover_menu_get_stack (popover);
gtk_stack_set_visible_child_name (GTK_STACK (stack), name);
}
void
gtk_popover_menu_add_submenu (GtkPopoverMenu *popover,
GtkWidget *submenu,
const char *name)
{
GtkWidget *stack = gtk_popover_menu_get_stack (popover);
gtk_stack_add_named (GTK_STACK (stack), submenu, name);
}
/**
* gtk_popover_menu_new_from_model :
* @ model : ( nullable ) : a ` GMenuModel `
*
* Creates a ` GtkPopoverMenu ` and populates it according to @ model .
*
* The created buttons are connected to actions found in the
* ` GtkApplicationWindow ` to which the popover belongs - typically
* by means of being attached to a widget that is contained within
* the ` GtkApplicationWindow ` s widget hierarchy .
*
* Actions can also be added using [ method @ Gtk . Widget . insert_action_group ]
* on the menus attach widget or on any of its parent widgets .
*
* This function creates menus with sliding submenus .
* See [ ctor @ Gtk . PopoverMenu . new_from_model_full ] for a way
* to control this .
*
* Returns : the new ` GtkPopoverMenu `
*/
GtkWidget *
gtk_popover_menu_new_from_model (GMenuModel *model)
{
return gtk_popover_menu_new_from_model_full (model, GTK_POPOVER_MENU_SLIDING);
}
/**
* gtk_popover_menu_new_from_model_full :
* @ model : a ` GMenuModel `
* @ flags : flags that affect how the menu is created
*
* Creates a ` GtkPopoverMenu ` and populates it according to @ model .
*
* The created buttons are connected to actions found in the
* action groups that are accessible from the parent widget .
* This includes the ` GtkApplicationWindow ` to which the popover
* belongs . Actions can also be added using [ method @ Gtk . Widget . insert_action_group ]
* on the parent widget or on any of its parent widgets .
*
* Returns : the new ` GtkPopoverMenu `
*/
GtkWidget *
gtk_popover_menu_new_from_model_full (GMenuModel *model,
GtkPopoverMenuFlags flags)
{
GtkWidget *popover;
g_return_val_if_fail (model == NULL || G_IS_MENU_MODEL (model), NULL);
popover = gtk_popover_menu_new ();
gtk_popover_menu_set_flags (GTK_POPOVER_MENU (popover), flags);
gtk_popover_menu_set_menu_model (GTK_POPOVER_MENU (popover), model);
return popover;
}
/**
* gtk_popover_menu_set_menu_model :
* @ popover : a ` GtkPopoverMenu `
* @ model : ( nullable ) : a ` GMenuModel `
*
* Sets a new menu model on @ popover .
*
* The existing contents of @ popover are removed , and
* the @ popover is populated with new contents according
* to @ model .
*/
void
gtk_popover_menu_set_menu_model (GtkPopoverMenu *popover,
GMenuModel *model)
{
g_return_if_fail (GTK_IS_POPOVER_MENU (popover));
g_return_if_fail (model == NULL || G_IS_MENU_MODEL (model));
if (g_set_object (&popover->model, model))
{
gtk_popover_menu_rebuild_contents (popover);
g_object_notify_by_pspec (G_OBJECT (popover), props[PROP_MENU_MODEL]);
}
}
/**
* gtk_popover_menu_set_flags :
* @ popover : a ` GtkPopoverMenu `
* @ flags : a set of ` GtkPopoverMenuFlags `
*
* Sets the flags that @ popover uses to create / display a menu from its model .
*
* If a model is set and the flags change , contents are rebuilt , so if setting
* properties individually , set flags before model to avoid a redundant rebuild .
*
* Since : 4 . 14
*/
void
gtk_popover_menu_set_flags (GtkPopoverMenu *popover,
GtkPopoverMenuFlags flags)
{
g_return_if_fail (GTK_IS_POPOVER_MENU (popover));
if (popover->flags == flags)
return ;
popover->flags = flags;
/* This shouldn’t happen IRL, but notify test unsets :child, so dodge error */
if (gtk_popover_get_child (GTK_POPOVER (popover)) != NULL)
gtk_popover_menu_rebuild_contents (popover);
g_object_notify_by_pspec (G_OBJECT (popover), props[PROP_FLAGS]);
}
/**
* gtk_popover_menu_get_menu_model :
* @ popover : a ` GtkPopoverMenu `
*
* Returns the menu model used to populate the popover .
*
* Returns : ( transfer none ) ( nullable ) : the menu model of @ popover
*/
GMenuModel *
gtk_popover_menu_get_menu_model (GtkPopoverMenu *popover)
{
g_return_val_if_fail (GTK_IS_POPOVER_MENU (popover), NULL);
return popover->model;
}
/**
* gtk_popover_menu_get_flags :
* @ popover : a ` GtkPopoverMenu `
*
* Returns the flags that @ popover uses to create / display a menu from its model .
*
* Returns : the ` GtkPopoverMenuFlags `
*
* Since : 4 . 14
*/
GtkPopoverMenuFlags
gtk_popover_menu_get_flags (GtkPopoverMenu *popover)
{
g_return_val_if_fail (GTK_IS_POPOVER_MENU (popover), 0 );
return popover->flags;
}
/**
* gtk_popover_menu_add_child :
* @ popover : a ` GtkPopoverMenu `
* @ child : the ` GtkWidget ` to add
* @ id : the ID to insert @ child at
*
* Adds a custom widget to a generated menu .
*
* For this to work , the menu model of @ popover must have
* an item with a ` custom ` attribute that matches @ id .
*
* Returns : % TRUE if @ id was found and the widget added
*/
gboolean
gtk_popover_menu_add_child (GtkPopoverMenu *popover,
GtkWidget *child,
const char *id)
{
g_return_val_if_fail (GTK_IS_POPOVER_MENU (popover), FALSE );
g_return_val_if_fail (GTK_IS_WIDGET (child), FALSE );
g_return_val_if_fail (id != NULL, FALSE );
return gtk_menu_section_box_add_custom (popover, child, id);
}
/**
* gtk_popover_menu_remove_child :
* @ popover : a ` GtkPopoverMenu `
* @ child : the ` GtkWidget ` to remove
*
* Removes a widget that has previously been added with
* [ method @ Gtk . PopoverMenu . add_child ]
*
* Returns : % TRUE if the widget was removed
*/
gboolean
gtk_popover_menu_remove_child (GtkPopoverMenu *popover,
GtkWidget *child)
{
g_return_val_if_fail (GTK_IS_POPOVER_MENU (popover), FALSE );
g_return_val_if_fail (GTK_IS_WIDGET (child), FALSE );
return gtk_menu_section_box_remove_custom (popover, child);
}
Messung V0.5 in Prozent C=97 H=95 G=95
¤ Dauer der Verarbeitung: 0.20 Sekunden
(vorverarbeitet am 2026-07-03)
¤
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