Start on rendering the outline view

Cargo.lock

@@ -3127,6 +3127,7 @@ version = "0.1.0"
 dependencies = [
  "editor",
  "gpui",
+ "language",
  "postage",
  "text",
  "workspace",

crates/language/src/language.rs

@@ -14,7 +14,7 @@ pub use diagnostic_set::DiagnosticEntry;
 use gpui::AppContext;
 use highlight_map::HighlightMap;
 use lazy_static::lazy_static;
-pub use outline::Outline;
+pub use outline::{Outline, OutlineItem};
 use parking_lot::Mutex;
 use serde::Deserialize;
 use std::{ops::Range, path::Path, str, sync::Arc};

crates/language/src/outline.rs

@@ -3,7 +3,7 @@ use std::ops::Range;
 #[derive(Debug)]
 pub struct Outline(pub Vec<OutlineItem>);
 
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 pub struct OutlineItem {
     pub id: usize,
     pub depth: usize,

crates/outline/Cargo.toml

@@ -7,8 +7,9 @@ edition = "2021"
 path = "src/outline.rs"
 
 [dependencies]
-text = { path = "../text" }
 editor = { path = "../editor" }
 gpui = { path = "../gpui" }
+language = { path = "../language" }
+text = { path = "../text" }
 workspace = { path = "../workspace" }
 postage = { version = "0.4", features = ["futures-traits"] }

crates/outline/src/outline.rs

@@ -1,10 +1,11 @@
 use editor::{display_map::ToDisplayPoint, Autoscroll, Editor, EditorSettings};
 use gpui::{
     action, elements::*, geometry::vector::Vector2F, keymap::Binding, Axis, Entity,
-    MutableAppContext, RenderContext, View, ViewContext, ViewHandle,
+    MutableAppContext, RenderContext, View, ViewContext, ViewHandle, WeakViewHandle,
 };
+use language::{Outline, OutlineItem};
 use postage::watch;
-use std::sync::Arc;
+use std::{cmp, sync::Arc};
 use text::{Bias, Point, Selection};
 use workspace::{Settings, Workspace};
 
@@ -14,14 +15,21 @@ action!(Confirm);
 pub fn init(cx: &mut MutableAppContext) {
     cx.add_bindings([
         Binding::new("cmd-shift-O", Toggle, Some("Editor")),
-        Binding::new("escape", Toggle, Some("GoToLine")),
-        Binding::new("enter", Confirm, Some("GoToLine")),
+        Binding::new("escape", Toggle, Some("OutlineView")),
+        Binding::new("enter", Confirm, Some("OutlineView")),
     ]);
     cx.add_action(OutlineView::toggle);
     cx.add_action(OutlineView::confirm);
 }
 
-struct OutlineView {}
+struct OutlineView {
+    handle: WeakViewHandle<Self>,
+    outline: Outline,
+    matches: Vec<OutlineItem>,
+    query_editor: ViewHandle<Editor>,
+    list_state: UniformListState,
+    settings: watch::Receiver<Settings>,
+}
 
 impl Entity for OutlineView {
     type Event = ();
@@ -33,11 +41,70 @@ impl View for OutlineView {
     }
 
     fn render(&mut self, cx: &mut RenderContext<'_, Self>) -> ElementBox {
-        todo!()
+        let settings = self.settings.borrow();
+
+        Align::new(
+            ConstrainedBox::new(
+                Container::new(
+                    Flex::new(Axis::Vertical)
+                        .with_child(
+                            Container::new(ChildView::new(self.query_editor.id()).boxed())
+                                .with_style(settings.theme.selector.input_editor.container)
+                                .boxed(),
+                        )
+                        .with_child(Flexible::new(1.0, false, self.render_matches()).boxed())
+                        .boxed(),
+                )
+                .with_style(settings.theme.selector.container)
+                .boxed(),
+            )
+            .with_max_width(500.0)
+            .with_max_height(420.0)
+            .boxed(),
+        )
+        .top()
+        .named("outline view")
+    }
+
+    fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
+        cx.focus(&self.query_editor);
     }
 }
 
 impl OutlineView {
+    fn new(
+        outline: Outline,
+        settings: watch::Receiver<Settings>,
+        cx: &mut ViewContext<Self>,
+    ) -> Self {
+        let query_editor = cx.add_view(|cx| {
+            Editor::single_line(
+                {
+                    let settings = settings.clone();
+                    Arc::new(move |_| {
+                        let settings = settings.borrow();
+                        EditorSettings {
+                            style: settings.theme.selector.input_editor.as_editor(),
+                            tab_size: settings.tab_size,
+                            soft_wrap: editor::SoftWrap::None,
+                        }
+                    })
+                },
+                cx,
+            )
+        });
+        cx.subscribe(&query_editor, Self::on_query_editor_event)
+            .detach();
+        Self {
+            handle: cx.weak_handle(),
+            matches: outline.0.clone(),
+            outline,
+            query_editor,
+            list_state: Default::default(),
+            settings,
+        }
+    }
+
     fn toggle(workspace: &mut Workspace, _: &Toggle, cx: &mut ViewContext<Workspace>) {
         let editor = workspace
             .active_item(cx)
@@ -45,9 +112,81 @@ impl OutlineView {
             .to_any()
             .downcast::<Editor>()
             .unwrap();
-        let buffer = editor.read(cx).buffer().read(cx);
-        dbg!(buffer.read(cx).outline());
+        let buffer = editor.read(cx).buffer().read(cx).read(cx).outline();
+        if let Some(outline) = buffer {
+            workspace.toggle_modal(cx, |cx, workspace| {
+                cx.add_view(|cx| OutlineView::new(outline, workspace.settings(), cx))
+            })
+        }
     }
 
     fn confirm(&mut self, _: &Confirm, cx: &mut ViewContext<Self>) {}
+
+    fn on_query_editor_event(
+        &mut self,
+        _: ViewHandle<Editor>,
+        event: &editor::Event,
+        cx: &mut ViewContext<Self>,
+    ) {
+        match event {
+            editor::Event::Edited => {
+                let query = self.query_editor.update(cx, |buffer, cx| buffer.text(cx));
+            }
+            _ => {}
+        }
+    }
+
+    fn render_matches(&self) -> ElementBox {
+        if self.matches.is_empty() {
+            let settings = self.settings.borrow();
+            return Container::new(
+                Label::new(
+                    "No matches".into(),
+                    settings.theme.selector.empty.label.clone(),
+                )
+                .boxed(),
+            )
+            .with_style(settings.theme.selector.empty.container)
+            .named("empty matches");
+        }
+
+        let handle = self.handle.clone();
+        let list =
+            UniformList::new(
+                self.list_state.clone(),
+                self.matches.len(),
+                move |mut range, items, cx| {
+                    let cx = cx.as_ref();
+                    let view = handle.upgrade(cx).unwrap();
+                    let view = view.read(cx);
+                    let start = range.start;
+                    range.end = cmp::min(range.end, view.matches.len());
+                    items.extend(view.matches[range].iter().enumerate().map(
+                        move |(i, outline_match)| view.render_match(outline_match, start + i),
+                    ));
+                },
+            );
+
+        Container::new(list.boxed())
+            .with_margin_top(6.0)
+            .named("matches")
+    }
+
+    fn render_match(&self, outline_match: &OutlineItem, index: usize) -> ElementBox {
+        // TODO: maintain selected index.
+        let selected_index = 0;
+        let settings = self.settings.borrow();
+        let style = if index == selected_index {
+            &settings.theme.selector.active_item
+        } else {
+            &settings.theme.selector.item
+        };
+
+        Label::new(outline_match.text.clone(), style.label.clone())
+            .contained()
+            .with_padding_left(20. * outline_match.depth as f32)
+            .contained()
+            .with_style(style.container)
+            .boxed()
+    }
 }