use crate::{ItemHandle, Pane};use gpui::{    AnyView, Decorations, IntoElement, ParentElement, Render, Styled, Subscription, View,    ViewContext, WindowContext,};use std::any::TypeId;use theme::CLIENT_SIDE_DECORATION_ROUNDING;use ui::{h_flex, prelude::*};use util::ResultExt; pub trait StatusItemView: Render {    fn set_active_pane_item(        &mut self,        active_pane_item: Option<&dyn crate::ItemHandle>,        cx: &mut ViewContext<Self>,    );} trait StatusItemViewHandle: Send {    fn to_any(&self) -> AnyView;    fn set_active_pane_item(        &self,        active_pane_item: Option<&dyn ItemHandle>,        cx: &mut WindowContext,    );    fn item_type(&self) -> TypeId;} pub struct StatusBar {    left_items: Vec<Box<dyn StatusItemViewHandle>>,    right_items: Vec<Box<dyn StatusItemViewHandle>>,    active_pane: View<Pane>,    _observe_active_pane: Subscription,} impl Render for StatusBar {    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {        h_flex()            .w_full()            .justify_between()            .gap(DynamicSpacing::Base08.rems(cx))            .py(DynamicSpacing::Base04.rems(cx))            .px(DynamicSpacing::Base08.rems(cx))            .bg(cx.theme().colors().status_bar_background)            .map(|el| match cx.window_decorations() {                Decorations::Server => el,                Decorations::Client { tiling, .. } => el                    .when(!(tiling.bottom || tiling.right), |el| {                        el.rounded_br(CLIENT_SIDE_DECORATION_ROUNDING)                    })                    .when(!(tiling.bottom || tiling.left), |el| {                        el.rounded_bl(CLIENT_SIDE_DECORATION_ROUNDING)                    })                    // This border is to avoid a transparent gap in the rounded corners                    .mb(px(-1.))                    .border_b(px(1.0))                    .border_color(cx.theme().colors().status_bar_background),            })            .child(self.render_left_tools(cx))            .child(self.render_right_tools(cx))    }} impl StatusBar {    fn render_left_tools(&self, cx: &mut ViewContext<Self>) -> impl IntoElement {        h_flex()            .gap(DynamicSpacing::Base04.rems(cx))            .overflow_x_hidden()            .children(self.left_items.iter().map(|item| item.to_any()))    }     fn render_right_tools(&self, cx: &mut ViewContext<Self>) -> impl IntoElement {        h_flex()            .gap(DynamicSpacing::Base04.rems(cx))            .children(self.right_items.iter().rev().map(|item| item.to_any()))    }} impl StatusBar {    pub fn new(active_pane: &View<Pane>, cx: &mut ViewContext<Self>) -> Self {        let mut this = Self {            left_items: Default::default(),            right_items: Default::default(),            active_pane: active_pane.clone(),            _observe_active_pane: cx                .observe(active_pane, |this, _, cx| this.update_active_pane_item(cx)),        };        this.update_active_pane_item(cx);        this    }     pub fn add_left_item<T>(&mut self, item: View<T>, cx: &mut ViewContext<Self>)    where        T: 'static + StatusItemView,    {        let active_pane_item = self.active_pane.read(cx).active_item();        item.set_active_pane_item(active_pane_item.as_deref(), cx);         self.left_items.push(Box::new(item));        cx.notify();    }     pub fn item_of_type<T: StatusItemView>(&self) -> Option<View<T>> {        self.left_items            .iter()            .chain(self.right_items.iter())            .find_map(|item| item.to_any().clone().downcast().log_err())    }     pub fn position_of_item<T>(&self) -> Option<usize>    where        T: StatusItemView,    {        for (index, item) in self.left_items.iter().enumerate() {            if item.item_type() == TypeId::of::<T>() {                return Some(index);            }        }        for (index, item) in self.right_items.iter().enumerate() {            if item.item_type() == TypeId::of::<T>() {                return Some(index + self.left_items.len());            }        }        None    }     pub fn insert_item_after<T>(        &mut self,        position: usize,        item: View<T>,        cx: &mut ViewContext<Self>,    ) where        T: 'static + StatusItemView,    {        let active_pane_item = self.active_pane.read(cx).active_item();        item.set_active_pane_item(active_pane_item.as_deref(), cx);         if position < self.left_items.len() {            self.left_items.insert(position + 1, Box::new(item))        } else {            self.right_items                .insert(position + 1 - self.left_items.len(), Box::new(item))        }        cx.notify()    }     pub fn remove_item_at(&mut self, position: usize, cx: &mut ViewContext<Self>) {        if position < self.left_items.len() {            self.left_items.remove(position);        } else {            self.right_items.remove(position - self.left_items.len());        }        cx.notify();    }     pub fn add_right_item<T>(&mut self, item: View<T>, cx: &mut ViewContext<Self>)    where        T: 'static + StatusItemView,    {        let active_pane_item = self.active_pane.read(cx).active_item();        item.set_active_pane_item(active_pane_item.as_deref(), cx);         self.right_items.push(Box::new(item));        cx.notify();    }     pub fn set_active_pane(&mut self, active_pane: &View<Pane>, cx: &mut ViewContext<Self>) {        self.active_pane = active_pane.clone();        self._observe_active_pane =            cx.observe(active_pane, |this, _, cx| this.update_active_pane_item(cx));        self.update_active_pane_item(cx);    }     fn update_active_pane_item(&mut self, cx: &mut ViewContext<Self>) {        let active_pane_item = self.active_pane.read(cx).active_item();        for item in self.left_items.iter().chain(&self.right_items) {            item.set_active_pane_item(active_pane_item.as_deref(), cx);        }    }} impl<T: StatusItemView> StatusItemViewHandle for View<T> {    fn to_any(&self) -> AnyView {        self.clone().into()    }     fn set_active_pane_item(        &self,        active_pane_item: Option<&dyn ItemHandle>,        cx: &mut WindowContext,    ) {        self.update(cx, |this, cx| {            this.set_active_pane_item(active_pane_item, cx)        });    }     fn item_type(&self) -> TypeId {        TypeId::of::<T>()    }} impl From<&dyn StatusItemViewHandle> for AnyView {    fn from(val: &dyn StatusItemViewHandle) -> Self {        val.to_any().clone()    }}