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use fui_core::{ControlObject, Property, Style, ViewContext};
use fui_drawing::Color;
use fui_macros::ui;
use std::cell::RefCell;
use std::rc::{Rc, Weak};
use typed_builder::TypedBuilder;
use typemap::TypeMap;
use crate::controls::*;
use crate::{DataHolder, GestureArea};
use fui_core::*;
#[derive(TypedBuilder)]
pub struct Menu {
#[builder(default = Orientation::Horizontal)]
pub orientation: Orientation,
pub items: Vec<MenuItem>,
}
impl Menu {
pub fn to_view(
self,
_style: Option<Box<dyn Style<Self>>>,
context: ViewContext,
) -> Rc<RefCell<dyn ControlObject>> {
// menu is active when tapped
let is_menu_active_prop = Property::new(false);
let content_prop = ObservableVec::new();
let mut close_item_popup_callbacks = Vec::new();
let mut close_siblings_callbacks = Vec::new();
let menu: Rc<RefCell<dyn ControlObject>> = ui!(
Shadow {
Style: Default { size: 12.0f32 },
Border {
border_type: BorderType::None,
Style: Default { background_color: Color::rgba(1.0, 1.0, 1.0, 0.8), },
StackPanel {
orientation: self.orientation,
&content_prop,
}
}
}
);
menu.borrow_mut()
.get_context_mut()
.set_attached_values(context.attached_values);
let uncovered_controls: Vec<_> = vec![Rc::downgrade(&menu)];
for item in self.items.into_iter() {
let close_siblings_callback_rc = Rc::new(RefCell::new(Callback::empty()));
let (view, close_item_popup_callback) = Self::menu_item_to_view(
item,
true,
&is_menu_active_prop,
&uncovered_controls,
&close_siblings_callback_rc,
);
content_prop.push(view);
close_item_popup_callbacks.push(close_item_popup_callback);
close_siblings_callbacks.push(close_siblings_callback_rc);
}
// setup sibling closing logic
for i in 0..close_siblings_callbacks.len() {
let mut close_item_popup_callbacks_for_i = Vec::new();
for j in 0..close_item_popup_callbacks.len() {
if j != i {
close_item_popup_callbacks_for_i.push(close_item_popup_callbacks[j].clone());
}
}
close_siblings_callbacks[i].borrow_mut().set_sync(move |_| {
for i in 0..close_item_popup_callbacks_for_i.len() {
close_item_popup_callbacks_for_i[i].emit(());
}
});
}
menu
}
fn menu_item_to_view(
menu_item: MenuItem,
is_top: bool,
is_menu_active_prop: &Property<bool>,
uncovered_controls: &Vec<Weak<RefCell<dyn ControlObject>>>,
close_siblings_callback_rc: &Rc<RefCell<Callback<()>>>,
) -> (Rc<RefCell<dyn ControlObject>>, Callback<()>) {
match menu_item {
MenuItem::Separator => {
let separator: Rc<RefCell<dyn ControlObject>> = ui! {
Text {
Style: Default { color: [0.0f32, 0.0f32, 0.0f32, 1.0f32] },
text: "---------"
}
};
(separator, Callback::empty())
}
MenuItem::Text {
text,
shortcut: _shortcut,
icon: _icon,
callback,
sub_items,
} => {
let has_sub_items = sub_items.len() > 0;
let is_open_prop = Property::new(false);
let background_property = Property::new(Color::rgba(0.0, 0.0, 0.0, 0.0));
let foreground_property = Property::new(Color::rgba(0.0, 0.0, 0.0, 1.0));
let mut on_hover_callback = Callback::empty();
let mut on_tap_up_callback = Callback::empty();
if is_top {
// top bar menu case
// open sub menu on tap down
let is_menu_active_prop_clone = is_menu_active_prop.clone();
let is_open_prop_clone = is_open_prop.clone();
on_tap_up_callback.set_sync(move |_| {
if has_sub_items {
is_menu_active_prop_clone.set(true);
is_open_prop_clone.set(true);
} else {
// execute menu command
callback.emit(());
}
});
// hover highlights items even when menu is not active
let background_property_clone = background_property.clone();
let foreground_property_clone = foreground_property.clone();
let is_menu_active_prop_clone = is_menu_active_prop.clone();
let is_open_prop_clone = is_open_prop.clone();
let close_siblings_callback_clone = close_siblings_callback_rc.clone();
on_hover_callback.set_sync(move |value| {
background_property_clone.set(
if value || is_menu_active_prop_clone.get() {
Color::rgba(0.0, 0.0, 0.0, 0.8)
} else {
Color::rgba(0.0, 0.0, 0.0, 0.0)
},
);
foreground_property_clone.set(
if value || is_menu_active_prop_clone.get() {
Color::rgba(1.0, 1.0, 0.0, 1.0)
} else {
Color::rgba(0.0, 0.0, 0.0, 1.0)
},
);
if value && is_menu_active_prop_clone.get() {
// close all the other popups on the same level (siblings)
close_siblings_callback_clone.borrow().emit(());
// open popup if there are sub items
if has_sub_items {
is_open_prop_clone.set(true);
}
}
});
} else {
let background_property_clone = background_property.clone();
let foreground_property_clone = foreground_property.clone();
let is_open_prop_clone = is_open_prop.clone();
let close_siblings_callback_clone = close_siblings_callback_rc.clone();
on_hover_callback.set_sync(move |value| {
background_property_clone.set(if value || has_sub_items {
Color::rgba(0.0, 0.0, 0.0, 0.8)
} else {
Color::rgba(0.0, 0.0, 0.0, 0.0)
});
foreground_property_clone.set(if value || has_sub_items {
Color::rgba(1.0, 1.0, 0.0, 1.0)
} else {
Color::rgba(0.0, 0.0, 0.0, 1.0)
});
if value {
// close all the other popups on the same level (siblings)
close_siblings_callback_clone.borrow().emit(());
// open popup if there are sub items
if has_sub_items {
is_open_prop_clone.set(true);
}
}
});
let is_menu_active_prop_clone = is_menu_active_prop.clone();
on_tap_up_callback.set_sync(move |_| {
if !has_sub_items {
// close menu
is_menu_active_prop_clone.set(false);
// execute menu command
callback.emit(());
}
});
}
let title_content: Rc<RefCell<dyn ControlObject>> = if is_top {
ui!(Text {
Row: 0,
Column: 1,
Margin: Thickness::new(5.0f32, 0.0f32, 5.0f32, 0.0f32),
Style: Dynamic {
color: foreground_property.clone()
},
text: text
})
} else {
ui!(
Grid {
columns: 4,
widths: vec![
(0, Length::Exact(25.0f32)),
(1, Length::Fill(1.0f32)),
(2, Length::Auto),
(3, Length::Exact(25.0f32)),
],
Text {
Row: 0, Column: 1,
HorizontalAlignment: Alignment::Start,
Style: Dynamic { color: foreground_property.clone() },
text: text
},
Text {
Row: 0, Column: 3,
Style: Dynamic { color: foreground_property.clone() },
text: if sub_items.len() > 0 { ">" } else { "" },
}
}
)
};
// return callback that closes the popup
let mut close_popup_callback = Callback::empty();
let popup = if sub_items.len() == 0 {
Children::None
} else {
let sub_content_prop = ObservableVec::new();
let popup_placement = if is_top {
PopupPlacement::BelowOrAboveParent
} else {
PopupPlacement::LeftOrRightParent
};
let background_property_clone = background_property.clone();
let foreground_property_clone = foreground_property.clone();
let popup_close_subscription = is_open_prop.on_changed(move |value| {
if value == false {
background_property_clone.set(Color::rgba(0.0, 0.0, 0.0, 0.0));
foreground_property_clone.set(Color::rgba(0.0, 0.0, 0.0, 1.0));
}
if is_top {
//is_menu_active_prop_clone.set(false);
}
});
let popup_content: Rc<RefCell<dyn ControlObject>> = ui!(
Shadow {
Style: Default { size: 12.0f32 },
Border {
border_type: BorderType::Raisen,
Style: Default { background_color: Color::rgba(1.0, 1.0, 1.0, 0.8), },
Grid {
columns: 1,
default_width: Length::Fill(1.0f32),
default_height: Length::Auto,
&sub_content_prop,
}
}
}
);
let mut close_item_popup_callbacks = Vec::new();
let mut close_siblings_callbacks = Vec::new();
let mut uncovered_controls = uncovered_controls.to_vec();
uncovered_controls.push(Rc::downgrade(&popup_content));
for item in sub_items.into_iter() {
let close_siblings_callback_rc = Rc::new(RefCell::new(Callback::empty()));
let (view, close_item_popup_callback) = Self::menu_item_to_view(
item,
false,
&is_menu_active_prop,
&uncovered_controls,
&close_siblings_callback_rc,
);
sub_content_prop.push(view);
close_item_popup_callbacks.push(close_item_popup_callback);
close_siblings_callbacks.push(close_siblings_callback_rc);
}
// setup sibling closing logic
for i in 0..close_siblings_callbacks.len() {
let mut close_item_popup_callbacks_for_i = Vec::new();
for j in 0..close_item_popup_callbacks.len() {
if j != i {
close_item_popup_callbacks_for_i
.push(close_item_popup_callbacks[j].clone());
}
}
close_siblings_callbacks[i].borrow_mut().set_sync(move |_| {
for i in 0..close_item_popup_callbacks_for_i.len() {
close_item_popup_callbacks_for_i[i].emit(());
}
});
}
// when clicked outside last open submenu
// make whole menu inactive (and close all submenu windows)
let mut auto_hide_occured_callback = Callback::empty();
let is_menu_active_prop_clone = is_menu_active_prop.clone();
auto_hide_occured_callback.set_sync(move |_| {
is_menu_active_prop_clone.set(false);
});
let is_open_prop_clone = is_open_prop.clone();
let is_menu_active_prop_changed =
is_menu_active_prop.on_changed(move |value| {
if !value {
is_open_prop_clone.set(false);
}
});
// return callback that closes the popup
let is_open_prop_clone = is_open_prop.clone();
close_popup_callback.set_sync(move |_| {
// close this popup
is_open_prop_clone.set(false);
// close all sub-popups
for subsibling in &close_siblings_callbacks {
subsibling.borrow().emit(());
}
});
let data_holder = DataHolder {
data: (popup_close_subscription, is_menu_active_prop_changed),
}
.to_view(
None,
ViewContext {
attached_values: TypeMap::new(),
children: Children::None,
},
);
let popup = ui!(Popup {
is_open: is_open_prop,
placement: popup_placement,
auto_hide: PopupAutoHide::ClickedOutside,
auto_hide_occured: auto_hide_occured_callback,
uncovered_controls: uncovered_controls,
popup_content,
data_holder,
});
Children::SingleStatic(popup)
};
let content = ui!(
GestureArea {
hover_change: on_hover_callback,
tap_up: on_tap_up_callback,
Border {
border_type: BorderType::None,
Style: Default { background_color: background_property },
title_content,
},
popup,
}
);
(content, close_popup_callback)
}
MenuItem::Custom {
content,
callback: _,
sub_items: _,
} => (content, Callback::empty()),
}
}
}