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// SPDX-FileCopyrightText: Copyright (c) 2026 Mike Li/Mikewolfli/Wei Li(mikewolfli@163.com)
// SPDX-License-Identifier: MIT
macro_rules! impl_menu_widgets {
() => {
#[cfg(not(alloc_frugal))]
fn create_menu_bar(
&self,
parent: ObjectId,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
self.mount_widget_of_kind(WidgetKind::MenuBar, parent, "", x, y, width, height)
}
fn create_menu(
&self,
parent: ObjectId,
text: &str,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
self.mount_widget_of_kind(
crate::control_backend::custom::MENU_KIND,
parent,
text,
x,
y,
width,
height,
)
}
/// Attaches a menu bar to the window that owns it.
///
/// There is no host menu to attach: the menu bar is a self-drawn widget, so
/// "attaching" means making it a child of the window it belongs to. Both ids
/// are checked first — the previous body returned `true` unconditionally,
/// which claimed success for ids that addressed nothing.
fn attach_menu_bar_to_window(&self, window: ObjectId, menu_bar: ObjectId) -> bool {
#[cfg(not(alloc_frugal))]
{
if !crate::widget::runtime::is_mounted(window)
|| !crate::widget::runtime::is_mounted(menu_bar)
{
return false;
}
let attached = crate::widget::runtime::with_widget_mut(menu_bar, |bar| {
bar.set_parent(Some(window))
})
.is_some();
if attached {
crate::widget::runtime::request_repaint(window);
}
return attached;
}
#[cfg(alloc_frugal)]
{
let _ = (window, menu_bar);
false
}
}
/// Adds an entry to a menu and returns the menu's id.
///
/// # Why this returns the menu id, not a new widget id
///
/// A menu entry is a `MenuEntry` value inside `Menu`'s own `items` vector,
/// not a mounted widget — see `widget::menu_toolbar::menu::Menu`. The old
/// implementation minted a fresh id from a counter and stored a text string
/// against it, so the id addressed nothing and the entry was invisible in
/// every respect except that one map. Returning the menu's id keeps the
/// contract honest: the call succeeded, and the thing it acted on is the
/// menu the caller already holds.
///
/// Returns `0` when `parent_menu` is not a mounted `Menu`, rather than
/// silently succeeding.
fn menu_add_item(
&self,
parent_menu: ObjectId,
text: &str,
shortcut: Option<&str>,
) -> ObjectId {
// `widget::runtime` and `widget::menu_toolbar` are compiled out of the
// alloc-frugal profile, so a menu entry cannot be stored there. Report
// that honestly rather than pretending the call succeeded.
#[cfg(alloc_frugal)]
{
let _ = (parent_menu, text, shortcut);
log::warn!(
"custom backend: menu items are unavailable in this profile (no widget \
registry is compiled in)"
);
return 0;
}
#[cfg(all(not(alloc_frugal), full_widgets))]
{
let index = crate::widget::runtime::with_widget_mut(parent_menu, |widget| {
(widget as &mut dyn std::any::Any)
.downcast_mut::<crate::widget::menu_toolbar::menu::Menu>()
.map(|menu| match shortcut {
Some(shortcut) => menu.add_action_with_shortcut(text, shortcut),
None => menu.add_action(text),
})
})
.flatten();
let Some(index) = index else {
log::warn!(
"custom backend: id {parent_menu} is not a mounted menu, so \"{text}\" \
could not be added"
);
return 0;
};
// A menu entry is a row inside the menu, not a widget, so it has no
// id from the widget registry. Handing out one of this backend's
// own — and remembering which row it names — is what lets a
// trigger, or `menu_item_shortcut`, talk about the entry the caller
// just added. The previous `ObjectId::from(added)` returned `1` for
// every item: it addressed no entry at all, and collided with the
// first id the platform hands out.
let mut state = lock(&self.state);
let id = super::super::types::allocate_menu_entry_id(&mut state);
state.menu_entries.insert(id, (parent_menu, index));
id
}
// `menu_toolbar` is compiled only where the full widget set is, so this
// profile has no `Menu` type to downcast to. Reporting the failure is
// the honest answer and keeps the method total in every profile.
#[cfg(all(not(alloc_frugal), not(full_widgets)))]
{
let _ = (parent_menu, text, shortcut);
log::warn!(
"custom backend: menus are unavailable in this profile (the menu widgets are \
not compiled in)"
);
0
}
}
/// Reads a menu entry's accelerator text from the entry it names.
fn menu_item_shortcut(&self, menu_item: ObjectId) -> Option<String> {
#[cfg(all(not(alloc_frugal), full_widgets))]
{
let (menu_id, index) = {
let state = lock(&self.state);
*state.menu_entries.get(&menu_item)?
};
return crate::widget::runtime::with_widget(menu_id, |widget| {
(widget as &dyn std::any::Any)
.downcast_ref::<crate::widget::menu_toolbar::menu::Menu>()
.and_then(|menu| menu.items().get(index))
.map(|entry| entry.shortcut().to_string())
.filter(|shortcut| !shortcut.is_empty())
})
.flatten();
}
#[cfg(any(alloc_frugal, not(full_widgets)))]
{
let _ = menu_item;
None
}
}
#[cfg(not(alloc_frugal))]
fn create_tool_bar(
&self,
parent: ObjectId,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
self.mount_widget_of_kind(WidgetKind::ToolBar, parent, "", x, y, width, height)
}
#[cfg(not(alloc_frugal))]
fn create_status_bar(
&self,
parent: ObjectId,
text: &str,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
self.mount_widget_of_kind(WidgetKind::StatusBar, parent, text, x, y, width, height)
}
#[cfg(not(alloc_frugal))]
fn create_action(
&self,
parent: ObjectId,
text: &str,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
self.mount_widget_of_kind(WidgetKind::Action, parent, text, x, y, width, height)
}
#[cfg(not(alloc_frugal))]
fn create_tool_button(
&self,
parent: ObjectId,
text: &str,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
self.mount_widget_of_kind(WidgetKind::ToolButton, parent, text, x, y, width, height)
}
#[cfg(not(alloc_frugal))]
#[cfg(widgets_unstripped)]
fn create_tool_box(
&self,
parent: ObjectId,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
#[cfg(full_widgets)]
{
self.mount_named_widget("tool_box", parent, "", x, y, width, height)
}
#[cfg(not(full_widgets))]
{
self.mount_widget_of_kind(WidgetKind::Toolbox, parent, "", x, y, width, height)
}
}
#[cfg(not(alloc_frugal))]
fn create_context_menu(
&self,
parent: ObjectId,
text: &str,
x: i32,
y: i32,
width: u32,
height: u32,
) -> ObjectId {
self.mount_widget_of_kind(WidgetKind::ContextMenu, parent, text, x, y, width, height)
}
fn poll_menu_triggered(&self) -> Option<ObjectId> {
lock(&self.state)
.menu_trigger_queue
.pop_front()
}
fn inject_menu_trigger(&self, menu_item_id: ObjectId) -> bool {
let mut state = lock(&self.state);
state.menu_trigger_queue.push_back(menu_item_id);
true
}
};
}