use std::{ops::Range, sync::Arc}; use editor::{    Anchor, Editor, EditorSnapshot, ToOffset,    display_map::{BlockContext, BlockPlacement, BlockProperties, BlockStyle},    hover_popover::diagnostics_markdown_style,    scroll::Autoscroll,};use gpui::{AppContext, Entity, Focusable, WeakEntity};use language::{BufferId, Diagnostic, DiagnosticEntry};use lsp::DiagnosticSeverity;use markdown::{Markdown, MarkdownElement};use settings::Settings;use text::{AnchorRangeExt, Point};use theme::ThemeSettings;use ui::{    ActiveTheme, AnyElement, App, Context, IntoElement, ParentElement, SharedString, Styled,    Window, div,};use util::maybe; use crate::ProjectDiagnosticsEditor; pub struct DiagnosticRenderer; impl DiagnosticRenderer {    pub fn diagnostic_blocks_for_group(        diagnostic_group: Vec<DiagnosticEntry<Point>>,        buffer_id: BufferId,        diagnostics_editor: Option<WeakEntity<ProjectDiagnosticsEditor>>,        cx: &mut App,    ) -> Vec<DiagnosticBlock> {        let Some(primary_ix) = diagnostic_group            .iter()            .position(|d| d.diagnostic.is_primary)        else {            return Vec::new();        };        let primary = diagnostic_group[primary_ix].clone();        let group_id = primary.diagnostic.group_id;        let mut results = vec![];        for entry in diagnostic_group.iter() {            if entry.diagnostic.is_primary {                let mut markdown = Self::markdown(&entry.diagnostic);                let diagnostic = &primary.diagnostic;                if diagnostic.source.is_some() || diagnostic.code.is_some() {                    markdown.push_str(" (");                }                if let Some(source) = diagnostic.source.as_ref() {                    markdown.push_str(&Markdown::escape(&source));                }                if diagnostic.source.is_some() && diagnostic.code.is_some() {                    markdown.push(' ');                }                if let Some(code) = diagnostic.code.as_ref() {                    if let Some(description) = diagnostic.code_description.as_ref() {                        markdown.push('[');                        markdown.push_str(&Markdown::escape(&code.to_string()));                        markdown.push_str("](");                        markdown.push_str(&Markdown::escape(description.as_ref()));                        markdown.push(')');                    } else {                        markdown.push_str(&Markdown::escape(&code.to_string()));                    }                }                if diagnostic.source.is_some() || diagnostic.code.is_some() {                    markdown.push(')');                }                 for (ix, entry) in diagnostic_group.iter().enumerate() {                    if entry.range.start.row.abs_diff(primary.range.start.row) >= 5 {                        markdown.push_str("\n- hint: [");                        markdown.push_str(&Markdown::escape(&entry.diagnostic.message));                        markdown.push_str(&format!(                            "](file://#diagnostic-{buffer_id}-{group_id}-{ix})\n",                        ))                    }                }                results.push(DiagnosticBlock {                    initial_range: primary.range.clone(),                    severity: primary.diagnostic.severity,                    diagnostics_editor: diagnostics_editor.clone(),                    markdown: cx.new(|cx| Markdown::new(markdown.into(), None, None, cx)),                });            } else if entry.range.start.row.abs_diff(primary.range.start.row) < 5 {                let markdown = Self::markdown(&entry.diagnostic);                 results.push(DiagnosticBlock {                    initial_range: entry.range.clone(),                    severity: entry.diagnostic.severity,                    diagnostics_editor: diagnostics_editor.clone(),                    markdown: cx.new(|cx| Markdown::new(markdown.into(), None, None, cx)),                });            } else {                let mut markdown = Self::markdown(&entry.diagnostic);                markdown.push_str(&format!(                    " ([back](file://#diagnostic-{buffer_id}-{group_id}-{primary_ix}))"                ));                 results.push(DiagnosticBlock {                    initial_range: entry.range.clone(),                    severity: entry.diagnostic.severity,                    diagnostics_editor: diagnostics_editor.clone(),                    markdown: cx.new(|cx| Markdown::new(markdown.into(), None, None, cx)),                });            }        }         results    }     fn markdown(diagnostic: &Diagnostic) -> String {        let mut markdown = String::new();         if let Some(md) = &diagnostic.markdown {            markdown.push_str(md);        } else {            markdown.push_str(&Markdown::escape(&diagnostic.message));        };        markdown    }} impl editor::DiagnosticRenderer for DiagnosticRenderer {    fn render_group(        &self,        diagnostic_group: Vec<DiagnosticEntry<Point>>,        buffer_id: BufferId,        snapshot: EditorSnapshot,        editor: WeakEntity<Editor>,        cx: &mut App,    ) -> Vec<BlockProperties<Anchor>> {        let blocks = Self::diagnostic_blocks_for_group(diagnostic_group, buffer_id, None, cx);        blocks            .into_iter()            .map(|block| {                let editor = editor.clone();                BlockProperties {                    placement: BlockPlacement::Near(                        snapshot                            .buffer_snapshot                            .anchor_after(block.initial_range.start),                    ),                    height: Some(1),                    style: BlockStyle::Flex,                    render: Arc::new(move |bcx| block.render_block(editor.clone(), bcx)),                    priority: 1,                    render_in_minimap: false,                }            })            .collect()    }     fn render_hover(        &self,        diagnostic_group: Vec<DiagnosticEntry<Point>>,        range: Range<Point>,        buffer_id: BufferId,        cx: &mut App,    ) -> Option<Entity<Markdown>> {        let blocks = Self::diagnostic_blocks_for_group(diagnostic_group, buffer_id, None, cx);        blocks.into_iter().find_map(|block| {            if block.initial_range == range {                Some(block.markdown)            } else {                None            }        })    }     fn open_link(        &self,        editor: &mut Editor,        link: SharedString,        window: &mut Window,        cx: &mut Context<Editor>,    ) {        DiagnosticBlock::open_link(editor, &None, link, window, cx);    }} #[derive(Clone)]pub(crate) struct DiagnosticBlock {    pub(crate) initial_range: Range<Point>,    pub(crate) severity: DiagnosticSeverity,    pub(crate) markdown: Entity<Markdown>,    pub(crate) diagnostics_editor: Option<WeakEntity<ProjectDiagnosticsEditor>>,} impl DiagnosticBlock {    pub fn render_block(&self, editor: WeakEntity<Editor>, bcx: &BlockContext) -> AnyElement {        let cx = &bcx.app;        let status_colors = bcx.app.theme().status();         let max_width = bcx.em_width * 120.;         let (background_color, border_color) = match self.severity {            DiagnosticSeverity::ERROR => (status_colors.error_background, status_colors.error),            DiagnosticSeverity::WARNING => {                (status_colors.warning_background, status_colors.warning)            }            DiagnosticSeverity::INFORMATION => (status_colors.info_background, status_colors.info),            DiagnosticSeverity::HINT => (status_colors.hint_background, status_colors.info),            _ => (status_colors.ignored_background, status_colors.ignored),        };        let settings = ThemeSettings::get_global(cx);        let editor_line_height = (settings.line_height() * settings.buffer_font_size(cx)).round();        let line_height = editor_line_height;        let diagnostics_editor = self.diagnostics_editor.clone();         div()            .border_l_2()            .px_2()            .line_height(line_height)            .bg(background_color)            .border_color(border_color)            .max_w(max_width)            .child(                MarkdownElement::new(                    self.markdown.clone(),                    diagnostics_markdown_style(bcx.window, cx),                )                .on_url_click({                    move |link, window, cx| {                        editor                            .update(cx, |editor, cx| {                                Self::open_link(editor, &diagnostics_editor, link, window, cx)                            })                            .ok();                    }                }),            )            .into_any_element()    }     pub fn open_link(        editor: &mut Editor,        diagnostics_editor: &Option<WeakEntity<ProjectDiagnosticsEditor>>,        link: SharedString,        window: &mut Window,        cx: &mut Context<Editor>,    ) {        let Some(diagnostic_link) = link.strip_prefix("file://#diagnostic-") else {            editor::hover_popover::open_markdown_url(link, window, cx);            return;        };        let Some((buffer_id, group_id, ix)) = maybe!({            let mut parts = diagnostic_link.split('-');            let buffer_id: u64 = parts.next()?.parse().ok()?;            let group_id: usize = parts.next()?.parse().ok()?;            let ix: usize = parts.next()?.parse().ok()?;            Some((BufferId::new(buffer_id).ok()?, group_id, ix))        }) else {            return;        };         if let Some(diagnostics_editor) = diagnostics_editor {            if let Some(diagnostic) = diagnostics_editor                .read_with(cx, |diagnostics, _| {                    diagnostics                        .diagnostics                        .get(&buffer_id)                        .cloned()                        .unwrap_or_default()                        .into_iter()                        .filter(|d| d.diagnostic.group_id == group_id)                        .nth(ix)                })                .ok()                .flatten()            {                let multibuffer = editor.buffer().read(cx);                let Some(snapshot) = multibuffer                    .buffer(buffer_id)                    .map(|entity| entity.read(cx).snapshot())                else {                    return;                };                 for (excerpt_id, range) in multibuffer.excerpts_for_buffer(buffer_id, cx) {                    if range.context.overlaps(&diagnostic.range, &snapshot) {                        Self::jump_to(                            editor,                            Anchor::range_in_buffer(excerpt_id, buffer_id, diagnostic.range),                            window,                            cx,                        );                        return;                    }                }            }        } else {            if let Some(diagnostic) = editor                .snapshot(window, cx)                .buffer_snapshot                .diagnostic_group(buffer_id, group_id)                .nth(ix)            {                Self::jump_to(editor, diagnostic.range, window, cx)            }        };    }     fn jump_to<T: ToOffset>(        editor: &mut Editor,        range: Range<T>,        window: &mut Window,        cx: &mut Context<Editor>,    ) {        let snapshot = &editor.buffer().read(cx).snapshot(cx);        let range = range.start.to_offset(&snapshot)..range.end.to_offset(&snapshot);         editor.unfold_ranges(&[range.start..range.end], true, false, cx);        editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {            s.select_ranges([range.start..range.start]);        });        window.focus(&editor.focus_handle(cx));    }}