Remove language::markdown (#25136)

The language::markdown crate had been superceded by markdown::Mardown.

After #25117, the only two remaining use-cases were rendering git commit
messages (which are arguably not really markdown) and the signature help
(which is definitely not markdown).

Updated the former to use the new markdown component, and the latter to
do syntax highlighting manually.

Release Notes:

- Allow selecting the commit message in git commits

crates/editor/src/editor.rs

@@ -81,11 +81,11 @@ use git::blame::GitBlame;
 use gpui::{
     div, impl_actions, point, prelude::*, pulsating_between, px, relative, size, Action, Animation,
     AnimationExt, AnyElement, App, AsyncWindowContext, AvailableSpace, Background, Bounds,
-    ClipboardEntry, ClipboardItem, Context, DispatchPhase, ElementId, Entity, EntityInputHandler,
+    ClipboardEntry, ClipboardItem, Context, DispatchPhase, Entity, EntityInputHandler,
     EventEmitter, FocusHandle, FocusOutEvent, Focusable, FontId, FontWeight, Global,
-    HighlightStyle, Hsla, InteractiveText, KeyContext, Modifiers, MouseButton, MouseDownEvent,
-    PaintQuad, ParentElement, Pixels, Render, SharedString, Size, Styled, StyledText, Subscription,
-    Task, TextStyle, TextStyleRefinement, UTF16Selection, UnderlineStyle, UniformListScrollHandle,
+    HighlightStyle, Hsla, KeyContext, Modifiers, MouseButton, MouseDownEvent, PaintQuad,
+    ParentElement, Pixels, Render, SharedString, Size, Styled, StyledText, Subscription, Task,
+    TextStyle, TextStyleRefinement, UTF16Selection, UnderlineStyle, UniformListScrollHandle,
     WeakEntity, WeakFocusHandle, Window,
 };
 use highlight_matching_bracket::refresh_matching_bracket_highlights;
@@ -98,7 +98,7 @@ pub use items::MAX_TAB_TITLE_LEN;
 use itertools::Itertools;
 use language::{
     language_settings::{self, all_language_settings, language_settings, InlayHintSettings},
-    markdown, point_from_lsp, AutoindentMode, BracketPair, Buffer, Capability, CharKind, CodeLabel,
+    point_from_lsp, AutoindentMode, BracketPair, Buffer, Capability, CharKind, CodeLabel,
     CursorShape, Diagnostic, DiskState, EditPredictionsMode, EditPreview, HighlightedText,
     IndentKind, IndentSize, Language, OffsetRangeExt, Point, Selection, SelectionGoal, TextObject,
     TransactionId, TreeSitterOptions,
@@ -214,72 +214,6 @@ const COLUMNAR_SELECTION_MODIFIERS: Modifiers = Modifiers {
     function: false,
 };
 
-pub fn render_parsed_markdown(
-    element_id: impl Into<ElementId>,
-    parsed: &language::ParsedMarkdown,
-    editor_style: &EditorStyle,
-    workspace: Option<WeakEntity<Workspace>>,
-    cx: &mut App,
-) -> InteractiveText {
-    let code_span_background_color = cx
-        .theme()
-        .colors()
-        .editor_document_highlight_read_background;
-
-    let highlights = gpui::combine_highlights(
-        parsed.highlights.iter().filter_map(|(range, highlight)| {
-            let highlight = highlight.to_highlight_style(&editor_style.syntax)?;
-            Some((range.clone(), highlight))
-        }),
-        parsed
-            .regions
-            .iter()
-            .zip(&parsed.region_ranges)
-            .filter_map(|(region, range)| {
-                if region.code {
-                    Some((
-                        range.clone(),
-                        HighlightStyle {
-                            background_color: Some(code_span_background_color),
-                            ..Default::default()
-                        },
-                    ))
-                } else {
-                    None
-                }
-            }),
-    );
-
-    let mut links = Vec::new();
-    let mut link_ranges = Vec::new();
-    for (range, region) in parsed.region_ranges.iter().zip(&parsed.regions) {
-        if let Some(link) = region.link.clone() {
-            links.push(link);
-            link_ranges.push(range.clone());
-        }
-    }
-
-    InteractiveText::new(
-        element_id,
-        StyledText::new(parsed.text.clone()).with_highlights(&editor_style.text, highlights),
-    )
-    .on_click(
-        link_ranges,
-        move |clicked_range_ix, window, cx| match &links[clicked_range_ix] {
-            markdown::Link::Web { url } => cx.open_url(url),
-            markdown::Link::Path { path } => {
-                if let Some(workspace) = &workspace {
-                    _ = workspace.update(cx, |workspace, cx| {
-                        workspace
-                            .open_abs_path(path.clone(), false, window, cx)
-                            .detach();
-                    });
-                }
-            }
-        },
-    )
-}
-
 #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub enum InlayId {
     InlineCompletion(usize),
@@ -745,6 +679,7 @@ pub struct Editor {
     show_git_blame_gutter: bool,
     show_git_blame_inline: bool,
     show_git_blame_inline_delay_task: Option<Task<()>>,
+    git_blame_inline_tooltip: Option<WeakEntity<crate::commit_tooltip::CommitTooltip>>,
     distinguish_unstaged_diff_hunks: bool,
     git_blame_inline_enabled: bool,
     serialize_dirty_buffers: bool,
@@ -1454,6 +1389,7 @@ impl Editor {
             distinguish_unstaged_diff_hunks: false,
             show_selection_menu: None,
             show_git_blame_inline_delay_task: None,
+            git_blame_inline_tooltip: None,
             git_blame_inline_enabled: ProjectSettings::get_global(cx).git.inline_blame_enabled(),
             serialize_dirty_buffers: ProjectSettings::get_global(cx)
                 .session
@@ -13434,7 +13370,12 @@ impl Editor {
 
     pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
         self.show_git_blame_inline
-            && self.focus_handle.is_focused(window)
+            && (self.focus_handle.is_focused(window)
+                || self
+                    .git_blame_inline_tooltip
+                    .as_ref()
+                    .and_then(|t| t.upgrade())
+                    .is_some())
             && !self.newest_selection_head_on_empty_line(cx)
             && self.has_blame_entries(cx)
     }