774 lines
29 KiB
Rust
774 lines
29 KiB
Rust
use gpui::*;
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use prelude::FluentBuilder;
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use std::{cell::Cell, ops::Deref, rc::Rc};
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use crate::scroll::{Scrollbar, ScrollbarState};
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use crate::StyledExt;
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use crate::{
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button::Button, h_flex, list::ListItem, popover::Popover, theme::ActiveTheme, v_flex, Icon,
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IconName, Selectable, Sizable as _,
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};
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actions!(menu, [Confirm, Dismiss, SelectNext, SelectPrev]);
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pub fn init(cx: &mut AppContext) {
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let context = Some("PopupMenu");
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cx.bind_keys([
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KeyBinding::new("enter", Confirm, context),
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KeyBinding::new("escape", Dismiss, context),
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KeyBinding::new("up", SelectPrev, context),
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KeyBinding::new("down", SelectNext, context),
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]);
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}
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pub trait PopupMenuExt: Styled + Selectable + IntoElement + 'static {
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/// Create a popup menu with the given items, anchored to the TopLeft corner
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fn popup_menu(
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self,
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f: impl Fn(PopupMenu, &mut ViewContext<PopupMenu>) -> PopupMenu + 'static,
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) -> Popover<PopupMenu> {
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self.popup_menu_with_anchor(Corner::TopLeft, f)
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}
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/// Create a popup menu with the given items, anchored to the given corner
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fn popup_menu_with_anchor(
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mut self,
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anchor: impl Into<Corner>,
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f: impl Fn(PopupMenu, &mut ViewContext<PopupMenu>) -> PopupMenu + 'static,
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) -> Popover<PopupMenu> {
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let style = self.style().clone();
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let element_id = self.element_id();
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Popover::new(SharedString::from(format!("popup-menu:{:?}", element_id)))
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.no_style()
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.trigger(self)
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.trigger_style(style)
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.anchor(anchor.into())
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.content(move |cx| PopupMenu::build(cx, |menu, cx| f(menu, cx)))
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}
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}
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impl PopupMenuExt for Button {}
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enum PopupMenuItem {
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Separator,
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Item {
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icon: Option<Icon>,
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label: SharedString,
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action: Option<Box<dyn Action>>,
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handler: Rc<dyn Fn(&mut WindowContext)>,
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},
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ElementItem {
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render: Box<dyn Fn(&mut WindowContext) -> AnyElement + 'static>,
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handler: Rc<dyn Fn(&mut WindowContext)>,
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},
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Submenu {
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icon: Option<Icon>,
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label: SharedString,
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menu: View<PopupMenu>,
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},
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}
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impl PopupMenuItem {
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fn is_clickable(&self) -> bool {
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!matches!(self, PopupMenuItem::Separator)
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}
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fn is_separator(&self) -> bool {
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matches!(self, PopupMenuItem::Separator)
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}
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fn has_icon(&self) -> bool {
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matches!(self, PopupMenuItem::Item { icon: Some(_), .. })
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}
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}
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pub struct PopupMenu {
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/// The parent menu of this menu, if this is a submenu
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parent_menu: Option<WeakView<Self>>,
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focus_handle: FocusHandle,
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menu_items: Vec<PopupMenuItem>,
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has_icon: bool,
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selected_index: Option<usize>,
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min_width: Pixels,
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max_width: Pixels,
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hovered_menu_ix: Option<usize>,
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bounds: Bounds<Pixels>,
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scrollable: bool,
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scroll_handle: ScrollHandle,
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scroll_state: Rc<Cell<ScrollbarState>>,
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action_focus_handle: Option<FocusHandle>,
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_subscriptions: [gpui::Subscription; 1],
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}
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impl PopupMenu {
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pub fn build(
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cx: &mut WindowContext,
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f: impl FnOnce(Self, &mut ViewContext<PopupMenu>) -> Self,
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) -> View<Self> {
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cx.new_view(|cx| {
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let focus_handle = cx.focus_handle();
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let _on_blur_subscription = cx.on_blur(&focus_handle, |this: &mut PopupMenu, cx| {
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this.dismiss(&Dismiss, cx)
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});
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let menu = Self {
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focus_handle,
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action_focus_handle: None,
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parent_menu: None,
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menu_items: Vec::new(),
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selected_index: None,
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min_width: px(120.),
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max_width: px(500.),
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has_icon: false,
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hovered_menu_ix: None,
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bounds: Bounds::default(),
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scrollable: false,
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scroll_handle: ScrollHandle::default(),
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scroll_state: Rc::new(Cell::new(ScrollbarState::default())),
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_subscriptions: [_on_blur_subscription],
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};
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cx.refresh();
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f(menu, cx)
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})
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}
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/// Bind the focus handle of the menu, when clicked, it will focus back to this handle and then dispatch the action
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pub fn track_focus(mut self, focus_handle: &FocusHandle) -> Self {
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self.action_focus_handle = Some(focus_handle.clone());
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self
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}
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/// Set min width of the popup menu, default is 120px
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pub fn min_w(mut self, width: impl Into<Pixels>) -> Self {
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self.min_width = width.into();
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self
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}
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/// Set max width of the popup menu, default is 500px
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pub fn max_w(mut self, width: impl Into<Pixels>) -> Self {
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self.max_width = width.into();
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self
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}
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/// Set the menu to be scrollable to show vertical scrollbar.
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///
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/// NOTE: If this is true, the sub-menus will cannot be support.
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pub fn scrollable(mut self) -> Self {
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self.scrollable = true;
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self
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}
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/// Add Menu Item
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pub fn menu(mut self, label: impl Into<SharedString>, action: Box<dyn Action>) -> Self {
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self.add_menu_item(label, None, action);
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self
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}
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/// Add Menu to open link
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pub fn link(mut self, label: impl Into<SharedString>, href: impl Into<String>) -> Self {
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let href = href.into();
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self.menu_items.push(PopupMenuItem::Item {
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icon: None,
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label: label.into(),
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action: None,
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handler: Rc::new(move |cx| cx.open_url(&href)),
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});
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self
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}
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/// Add Menu to open link
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pub fn link_with_icon(
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mut self,
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label: impl Into<SharedString>,
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icon: impl Into<Icon>,
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href: impl Into<String>,
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) -> Self {
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let href = href.into();
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self.menu_items.push(PopupMenuItem::Item {
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icon: Some(icon.into()),
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label: label.into(),
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action: None,
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handler: Rc::new(move |cx| cx.open_url(&href)),
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});
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self
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}
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/// Add Menu Item with Icon
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pub fn menu_with_icon(
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mut self,
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label: impl Into<SharedString>,
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icon: impl Into<Icon>,
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action: Box<dyn Action>,
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) -> Self {
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self.add_menu_item(label, Some(icon.into()), action);
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self
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}
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/// Add Menu Item with check icon
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pub fn menu_with_check(
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mut self,
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label: impl Into<SharedString>,
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checked: bool,
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action: Box<dyn Action>,
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) -> Self {
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if checked {
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self.add_menu_item(label, Some(IconName::Check.into()), action);
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} else {
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self.add_menu_item(label, None, action);
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}
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self
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}
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/// Add Menu Item with custom element render.
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pub fn menu_with_element<F, E>(mut self, builder: F, action: Box<dyn Action>) -> Self
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where
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F: Fn(&mut WindowContext) -> E + 'static,
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E: IntoElement,
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{
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self.menu_items.push(PopupMenuItem::ElementItem {
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render: Box::new(move |cx| builder(cx).into_any_element()),
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handler: self.wrap_handler(action),
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});
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self
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}
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fn wrap_handler(&self, action: Box<dyn Action>) -> Rc<dyn Fn(&mut WindowContext)> {
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let action_focus_handle = self.action_focus_handle.clone();
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Rc::new(move |cx| {
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cx.activate_window();
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// Focus back to the user expected focus handle
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// Then the actions listened on that focus handle can be received
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//
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// For example:
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//
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// TabPanel
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// |- PopupMenu
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// |- PanelContent (actions are listened here)
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//
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// The `PopupMenu` and `PanelContent` are at the same level in the TabPanel
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// If the actions are listened on the `PanelContent`,
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// it can't receive the actions from the `PopupMenu`, unless we focus on `PanelContent`.
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if let Some(handle) = action_focus_handle.as_ref() {
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cx.focus(handle);
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}
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cx.dispatch_action(action.boxed_clone());
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})
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}
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fn add_menu_item(
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&mut self,
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label: impl Into<SharedString>,
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icon: Option<Icon>,
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action: Box<dyn Action>,
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) -> &mut Self {
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if icon.is_some() {
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self.has_icon = true;
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}
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self.menu_items.push(PopupMenuItem::Item {
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icon,
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label: label.into(),
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action: Some(action.boxed_clone()),
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handler: self.wrap_handler(action),
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});
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self
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}
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/// Add a separator Menu Item
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pub fn separator(mut self) -> Self {
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if self.menu_items.is_empty() {
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return self;
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}
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if let Some(PopupMenuItem::Separator) = self.menu_items.last() {
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return self;
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}
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self.menu_items.push(PopupMenuItem::Separator);
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self
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}
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pub fn submenu(
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self,
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label: impl Into<SharedString>,
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cx: &mut ViewContext<Self>,
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f: impl Fn(PopupMenu, &mut ViewContext<PopupMenu>) -> PopupMenu + 'static,
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) -> Self {
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self.submenu_with_icon(None, label, cx, f)
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}
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/// Add a Submenu item with icon
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pub fn submenu_with_icon(
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mut self,
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icon: Option<Icon>,
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label: impl Into<SharedString>,
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cx: &mut ViewContext<Self>,
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f: impl Fn(PopupMenu, &mut ViewContext<PopupMenu>) -> PopupMenu + 'static,
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) -> Self {
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let submenu = PopupMenu::build(cx, f);
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let parent_menu = cx.view().downgrade();
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submenu.update(cx, |view, _| {
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view.parent_menu = Some(parent_menu);
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});
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self.menu_items.push(PopupMenuItem::Submenu {
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icon,
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label: label.into(),
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menu: submenu,
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});
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self
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}
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pub(crate) fn active_submenu(&self) -> Option<View<PopupMenu>> {
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if let Some(ix) = self.hovered_menu_ix {
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if let Some(item) = self.menu_items.get(ix) {
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return match item {
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PopupMenuItem::Submenu { menu, .. } => Some(menu.clone()),
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_ => None,
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};
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}
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}
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None
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}
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pub fn is_empty(&self) -> bool {
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self.menu_items.is_empty()
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}
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fn clickable_menu_items(&self) -> impl Iterator<Item = (usize, &PopupMenuItem)> {
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self.menu_items
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.iter()
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.enumerate()
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.filter(|(_, item)| item.is_clickable())
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}
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fn on_click(&mut self, ix: usize, cx: &mut ViewContext<Self>) {
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cx.stop_propagation();
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cx.prevent_default();
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self.selected_index = Some(ix);
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self.confirm(&Confirm, cx);
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}
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fn confirm(&mut self, _: &Confirm, cx: &mut ViewContext<Self>) {
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if let Some(index) = self.selected_index {
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let item = self.menu_items.get(index);
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match item {
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Some(PopupMenuItem::Item { handler, .. }) => {
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handler(cx);
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self.dismiss(&Dismiss, cx)
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}
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Some(PopupMenuItem::ElementItem { handler, .. }) => {
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handler(cx);
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self.dismiss(&Dismiss, cx)
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}
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_ => {}
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}
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}
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}
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fn select_next(&mut self, _: &SelectNext, cx: &mut ViewContext<Self>) {
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let count = self.clickable_menu_items().count();
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if count > 0 {
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let last_ix = count.saturating_sub(1);
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let ix = self
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.selected_index
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.map(|index| if index == last_ix { 0 } else { index + 1 })
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.unwrap_or(0);
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self.selected_index = Some(ix);
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cx.notify();
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}
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}
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fn select_prev(&mut self, _: &SelectPrev, cx: &mut ViewContext<Self>) {
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let count = self.clickable_menu_items().count();
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if count > 0 {
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let last_ix = count.saturating_sub(1);
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let ix = self
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.selected_index
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.map(|index| {
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if index == last_ix {
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0
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} else {
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index.saturating_sub(1)
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}
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})
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.unwrap_or(last_ix);
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self.selected_index = Some(ix);
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cx.notify();
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}
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}
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fn dismiss(&mut self, _: &Dismiss, cx: &mut ViewContext<Self>) {
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if self.active_submenu().is_some() {
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return;
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}
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cx.emit(DismissEvent);
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// Dismiss parent menu, when this menu is dismissed
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if let Some(parent_menu) = self.parent_menu.clone().and_then(|menu| menu.upgrade()) {
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parent_menu.update(cx, |view, cx| {
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view.hovered_menu_ix = None;
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view.dismiss(&Dismiss, cx);
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})
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}
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}
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fn render_keybinding(
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action: Option<Box<dyn Action>>,
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cx: &ViewContext<Self>,
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) -> Option<impl IntoElement> {
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if let Some(action) = action {
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if let Some(keybinding) = cx.bindings_for_action(action.deref()).first() {
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let el = div().text_color(cx.theme().muted_foreground).children(
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keybinding
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.keystrokes()
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.iter()
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.map(|key| key_shortcut(key.clone())),
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);
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return Some(el);
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}
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}
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None
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}
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fn render_icon(
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has_icon: bool,
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icon: Option<Icon>,
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_: &ViewContext<Self>,
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) -> Option<impl IntoElement> {
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let icon_placeholder = if has_icon { Some(Icon::empty()) } else { None };
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if !has_icon {
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return None;
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}
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let icon = h_flex()
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.w_3p5()
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.h_3p5()
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.items_center()
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.justify_center()
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.text_sm()
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.map(|this| {
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if let Some(icon) = icon {
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this.child(icon.clone().small())
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} else {
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this.children(icon_placeholder.clone())
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}
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});
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Some(icon)
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}
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}
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impl FluentBuilder for PopupMenu {}
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impl EventEmitter<DismissEvent> for PopupMenu {}
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impl FocusableView for PopupMenu {
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fn focus_handle(&self, _: &AppContext) -> FocusHandle {
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self.focus_handle.clone()
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}
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}
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impl Render for PopupMenu {
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fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
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let view = cx.view().clone();
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let has_icon = self.menu_items.iter().any(|item| item.has_icon());
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let items_count = self.menu_items.len();
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let max_width = self.max_width;
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let bounds = self.bounds;
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let window_haft_height = cx.window_bounds().get_bounds().size.height * 0.5;
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let max_height = window_haft_height.min(px(450.));
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const ITEM_HEIGHT: Pixels = px(26.);
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v_flex()
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.id("popup-menu")
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.key_context("PopupMenu")
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.track_focus(&self.focus_handle)
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.on_action(cx.listener(Self::select_next))
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.on_action(cx.listener(Self::select_prev))
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.on_action(cx.listener(Self::confirm))
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.on_action(cx.listener(Self::dismiss))
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.on_mouse_down_out(cx.listener(|this, _, cx| this.dismiss(&Dismiss, cx)))
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.popover_style(cx)
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.text_color(cx.theme().popover_foreground)
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.relative()
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.p_1()
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.child(
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div()
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.id("popup-menu-items")
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.when(self.scrollable, |this| {
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this.max_h(max_height)
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.overflow_y_scroll()
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.track_scroll(&self.scroll_handle)
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})
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.child(
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v_flex()
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.gap_y_0p5()
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.min_w(self.min_width)
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.max_w(self.max_width)
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.min_w(rems(8.))
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.child({
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canvas(
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move |bounds, cx| view.update(cx, |r, _| r.bounds = bounds),
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|_, _, _| {},
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)
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.absolute()
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.size_full()
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})
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.children(
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self.menu_items
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.iter_mut()
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.enumerate()
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// Skip last separator
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.filter(|(ix, item)| {
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!(*ix == items_count - 1 && item.is_separator())
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})
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.map(|(ix, item)| {
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let this = ListItem::new(("menu-item", ix))
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.relative()
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.text_sm()
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.py_0()
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.px_2()
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.rounded_md()
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.items_center()
|
|
.on_mouse_enter(cx.listener(move |this, _, cx| {
|
|
this.hovered_menu_ix = Some(ix);
|
|
cx.notify();
|
|
}));
|
|
|
|
match item {
|
|
PopupMenuItem::Separator => {
|
|
this.h_auto().p_0().disabled(true).child(
|
|
div()
|
|
.rounded_none()
|
|
.h(px(1.))
|
|
.mx_neg_1()
|
|
.my_0p5()
|
|
.bg(cx.theme().muted),
|
|
)
|
|
}
|
|
PopupMenuItem::ElementItem { render, .. } => this
|
|
.on_click(cx.listener(move |this, _, cx| {
|
|
this.on_click(ix, cx)
|
|
}))
|
|
.child(
|
|
h_flex()
|
|
.min_h(ITEM_HEIGHT)
|
|
.items_center()
|
|
.gap_x_1p5()
|
|
.children(Self::render_icon(
|
|
has_icon, None, cx,
|
|
))
|
|
.child((render)(cx)),
|
|
),
|
|
PopupMenuItem::Item {
|
|
icon,
|
|
label,
|
|
action,
|
|
..
|
|
} => {
|
|
let action = action
|
|
.as_ref()
|
|
.map(|action| action.boxed_clone());
|
|
let key = Self::render_keybinding(action, cx);
|
|
|
|
this.on_click(cx.listener(move |this, _, cx| {
|
|
this.on_click(ix, cx)
|
|
}))
|
|
.child(
|
|
h_flex()
|
|
.h(ITEM_HEIGHT)
|
|
.items_center()
|
|
.gap_x_1p5()
|
|
.children(Self::render_icon(
|
|
has_icon,
|
|
icon.clone(),
|
|
cx,
|
|
))
|
|
.child(
|
|
h_flex()
|
|
.flex_1()
|
|
.gap_2()
|
|
.items_center()
|
|
.justify_between()
|
|
.child(label.clone())
|
|
.children(key),
|
|
),
|
|
)
|
|
}
|
|
PopupMenuItem::Submenu { icon, label, menu } => this
|
|
.when(self.hovered_menu_ix == Some(ix), |this| {
|
|
this.selected(true)
|
|
})
|
|
.child(
|
|
h_flex()
|
|
.items_start()
|
|
.child(
|
|
h_flex()
|
|
.size_full()
|
|
.items_center()
|
|
.gap_x_1p5()
|
|
.children(Self::render_icon(
|
|
has_icon,
|
|
icon.clone(),
|
|
cx,
|
|
))
|
|
.child(
|
|
h_flex()
|
|
.flex_1()
|
|
.gap_2()
|
|
.items_center()
|
|
.justify_between()
|
|
.child(label.clone())
|
|
.child(
|
|
IconName::ChevronRight,
|
|
),
|
|
),
|
|
)
|
|
.when_some(
|
|
self.hovered_menu_ix,
|
|
|this, hovered_ix| {
|
|
let (anchor, left) =
|
|
if cx.bounds().size.width
|
|
- bounds.origin.x
|
|
< max_width
|
|
{
|
|
(Corner::TopRight, -px(15.))
|
|
} else {
|
|
(
|
|
Corner::TopLeft,
|
|
bounds.size.width
|
|
- px(10.),
|
|
)
|
|
};
|
|
|
|
let top = if bounds.origin.y
|
|
+ bounds.size.height
|
|
> cx.bounds().size.height
|
|
{
|
|
px(32.)
|
|
} else {
|
|
-px(10.)
|
|
};
|
|
|
|
if hovered_ix == ix {
|
|
this.child(
|
|
anchored()
|
|
.anchor(anchor)
|
|
.child(
|
|
div()
|
|
.occlude()
|
|
.top(top)
|
|
.left(left)
|
|
.child(menu.clone()),
|
|
)
|
|
.snap_to_window_with_margin(
|
|
Edges::all(px(8.)),
|
|
),
|
|
)
|
|
} else {
|
|
this
|
|
}
|
|
},
|
|
),
|
|
),
|
|
}
|
|
}),
|
|
),
|
|
),
|
|
)
|
|
.when(self.scrollable, |this| {
|
|
// TODO: When the menu is limited by `overflow_y_scroll`, the sub-menu will cannot be displayed.
|
|
this.child(
|
|
div()
|
|
.absolute()
|
|
.top_0()
|
|
.left_0()
|
|
.right_0p5()
|
|
.bottom_0()
|
|
.child(Scrollbar::vertical(
|
|
cx.entity_id(),
|
|
self.scroll_state.clone(),
|
|
self.scroll_handle.clone(),
|
|
self.bounds.size,
|
|
)),
|
|
)
|
|
})
|
|
}
|
|
}
|
|
|
|
/// Return the Platform specific keybinding string by KeyStroke
|
|
pub fn key_shortcut(key: Keystroke) -> String {
|
|
if cfg!(target_os = "macos") {
|
|
return format!("{}", key);
|
|
}
|
|
|
|
let mut parts = vec![];
|
|
if key.modifiers.control {
|
|
parts.push("Ctrl");
|
|
}
|
|
if key.modifiers.alt {
|
|
parts.push("Alt");
|
|
}
|
|
if key.modifiers.platform {
|
|
parts.push("Win");
|
|
}
|
|
if key.modifiers.shift {
|
|
parts.push("Shift");
|
|
}
|
|
|
|
// Capitalize the first letter
|
|
let key = if let Some(first_c) = key.key.chars().next() {
|
|
format!("{}{}", first_c.to_uppercase(), &key.key[1..])
|
|
} else {
|
|
key.key.to_string()
|
|
};
|
|
|
|
parts.push(&key);
|
|
parts.join("+")
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
#[test]
|
|
fn test_key_shortcut() {
|
|
use super::key_shortcut;
|
|
use gpui::Keystroke;
|
|
|
|
if cfg!(target_os = "windows") {
|
|
assert_eq!(key_shortcut(Keystroke::parse("a").unwrap()), "A");
|
|
assert_eq!(key_shortcut(Keystroke::parse("ctrl-a").unwrap()), "Ctrl+A");
|
|
assert_eq!(
|
|
key_shortcut(Keystroke::parse("ctrl-alt-a").unwrap()),
|
|
"Ctrl+Alt+A"
|
|
);
|
|
assert_eq!(
|
|
key_shortcut(Keystroke::parse("ctrl-alt-shift-a").unwrap()),
|
|
"Ctrl+Alt+Shift+A"
|
|
);
|
|
assert_eq!(
|
|
key_shortcut(Keystroke::parse("ctrl-alt-shift-win-a").unwrap()),
|
|
"Ctrl+Alt+Win+Shift+A"
|
|
);
|
|
assert_eq!(
|
|
key_shortcut(Keystroke::parse("ctrl-shift-backspace").unwrap()),
|
|
"Ctrl+Shift+Backspace"
|
|
);
|
|
}
|
|
}
|
|
}
|