use editor::Editor;use encoding_rs::{Encoding, UTF_8};use gpui::{    Context, Entity, IntoElement, ParentElement, Render, Styled, Subscription, Window, div,};use ui::{Button, ButtonCommon, Clickable, LabelSize, Tooltip};use workspace::{    StatusBarSettings, StatusItemView, Workspace,    item::{ItemHandle, Settings},}; pub struct ActiveBufferEncoding {    active_encoding: Option<&'static Encoding>,    //workspace: WeakEntity<Workspace>,    _observe_active_editor: Option<Subscription>,    has_bom: bool,} impl ActiveBufferEncoding {    pub fn new(_workspace: &Workspace) -> Self {        Self {            active_encoding: None,            //workspace: workspace.weak_handle(),            _observe_active_editor: None,            has_bom: false,        }    }     fn update_encoding(&mut self, editor: Entity<Editor>, _: &mut Window, cx: &mut Context<Self>) {        self.active_encoding = None;         let editor = editor.read(cx);        if let Some((_, buffer, _)) = editor.active_excerpt(cx) {            let buffer = buffer.read(cx);             self.active_encoding = Some(buffer.encoding());            self.has_bom = buffer.has_bom();        }         cx.notify();    }} impl Render for ActiveBufferEncoding {    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {        let Some(active_encoding) = self.active_encoding else {            return div().hidden();        };         let display_option = StatusBarSettings::get_global(cx).active_encoding_button;        let is_utf8 = active_encoding == UTF_8;        if !display_option.should_show(is_utf8, self.has_bom) {            return div().hidden();        }         let mut text = active_encoding.name().to_string();        if self.has_bom {            text.push_str(" (BOM)");        }         div().child(            Button::new("change-encoding", text)                .label_size(LabelSize::Small)                .on_click(|_, _, _cx| {                    // No-op                })                .tooltip(Tooltip::text("Current Encoding")),        )    }} impl StatusItemView for ActiveBufferEncoding {    fn set_active_pane_item(        &mut self,        active_pane_item: Option<&dyn ItemHandle>,        window: &mut Window,        cx: &mut Context<Self>,    ) {        if let Some(editor) = active_pane_item.and_then(|item| item.downcast::<Editor>()) {            self._observe_active_editor =                Some(cx.observe_in(&editor, window, Self::update_encoding));            self.update_encoding(editor, window, cx);        } else {            self.active_encoding = None;            self.has_bom = false;            self._observe_active_editor = None;        }         cx.notify();    }}