use crate::ProjectDiagnosticsEditor;use gpui::{EventEmitter, ParentElement, Render, View, ViewContext, WeakView};use ui::prelude::*;use ui::{IconButton, IconButtonShape, IconName, Tooltip};use workspace::{item::ItemHandle, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView}; pub struct ToolbarControls {    editor: Option<WeakView<ProjectDiagnosticsEditor>>,} impl Render for ToolbarControls {    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {        let mut include_warnings = false;        let mut has_stale_excerpts = false;        let mut is_updating = false;         if let Some(editor) = self.diagnostics() {            let diagnostics = editor.read(cx);            include_warnings = diagnostics.include_warnings;            has_stale_excerpts = !diagnostics.paths_to_update.is_empty();            is_updating = diagnostics.update_excerpts_task.is_some()                || diagnostics                    .project                    .read(cx)                    .language_servers_running_disk_based_diagnostics(cx)                    .next()                    .is_some();        }         let tooltip = if include_warnings {            "Exclude Warnings"        } else {            "Include Warnings"        };         let warning_color = if include_warnings {            Color::Warning        } else {            Color::Muted        };         h_flex()            .gap_1()            .when(has_stale_excerpts, |div| {                div.child(                    IconButton::new("update-excerpts", IconName::Update)                        .icon_color(Color::Info)                        .shape(IconButtonShape::Square)                        .disabled(is_updating)                        .tooltip(move |cx| Tooltip::text("Update excerpts", cx))                        .on_click(cx.listener(|this, _, cx| {                            if let Some(diagnostics) = this.diagnostics() {                                diagnostics.update(cx, |diagnostics, cx| {                                    diagnostics.update_all_excerpts(cx);                                });                            }                        })),                )            })            .child(                IconButton::new("toggle-warnings", IconName::Warning)                    .icon_color(warning_color)                    .shape(IconButtonShape::Square)                    .tooltip(move |cx| Tooltip::text(tooltip, cx))                    .on_click(cx.listener(|this, _, cx| {                        if let Some(editor) = this.diagnostics() {                            editor.update(cx, |editor, cx| {                                editor.toggle_warnings(&Default::default(), cx);                            });                        }                    })),            )    }} impl EventEmitter<ToolbarItemEvent> for ToolbarControls {} impl ToolbarItemView for ToolbarControls {    fn set_active_pane_item(        &mut self,        active_pane_item: Option<&dyn ItemHandle>,        _: &mut ViewContext<Self>,    ) -> ToolbarItemLocation {        if let Some(pane_item) = active_pane_item.as_ref() {            if let Some(editor) = pane_item.downcast::<ProjectDiagnosticsEditor>() {                self.editor = Some(editor.downgrade());                ToolbarItemLocation::PrimaryRight            } else {                ToolbarItemLocation::Hidden            }        } else {            ToolbarItemLocation::Hidden        }    }} impl Default for ToolbarControls {    fn default() -> Self {        Self::new()    }} impl ToolbarControls {    pub fn new() -> Self {        ToolbarControls { editor: None }    }     fn diagnostics(&self) -> Option<View<ProjectDiagnosticsEditor>> {        self.editor.as_ref()?.upgrade()    }}