agent: Add scrollbar to the history view (#28690)

Ended up not making this one visible only upon hover or something
because the layout alignment would be weird given the list item spans
the full width. So, experimenting with this design here:

<img
src="https://github.com/user-attachments/assets/62bf661e-1aae-4644-8a89-49cefb3e8130"
width="700" />

Release Notes:

- agent: Add scrollbar to the history view.
This commit is contained in:
Danilo Leal 2025-04-14 12:36:58 -03:00 committed by GitHub
parent 9863b48dd7
commit ac8a4ba5d4
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GPG key ID: B5690EEEBB952194

View file

@ -4,11 +4,14 @@ use assistant_context_editor::SavedContextMetadata;
use editor::{Editor, EditorEvent};
use fuzzy::{StringMatch, StringMatchCandidate};
use gpui::{
App, Entity, FocusHandle, Focusable, ScrollStrategy, Task, UniformListScrollHandle, WeakEntity,
Window, uniform_list,
App, Entity, FocusHandle, Focusable, ScrollStrategy, Stateful, Task, UniformListScrollHandle,
WeakEntity, Window, uniform_list,
};
use time::{OffsetDateTime, UtcOffset};
use ui::{HighlightedLabel, IconButtonShape, ListItem, ListItemSpacing, Tooltip, prelude::*};
use ui::{
HighlightedLabel, IconButtonShape, ListItem, ListItemSpacing, Scrollbar, ScrollbarState,
Tooltip, prelude::*,
};
use util::ResultExt;
use crate::history_store::{HistoryEntry, HistoryStore};
@ -26,6 +29,8 @@ pub struct ThreadHistory {
matches: Vec<StringMatch>,
_subscriptions: Vec<gpui::Subscription>,
_search_task: Option<Task<()>>,
scrollbar_visibility: bool,
scrollbar_state: ScrollbarState,
}
impl ThreadHistory {
@ -58,10 +63,13 @@ impl ThreadHistory {
this.update_all_entries(cx);
});
let scroll_handle = UniformListScrollHandle::default();
let scrollbar_state = ScrollbarState::new(scroll_handle.clone());
Self {
assistant_panel,
history_store,
scroll_handle: UniformListScrollHandle::default(),
scroll_handle,
selected_index: 0,
search_query: SharedString::new_static(""),
all_entries: entries,
@ -69,6 +77,8 @@ impl ThreadHistory {
search_editor,
_subscriptions: vec![search_editor_subscription, history_store_subscription],
_search_task: None,
scrollbar_visibility: true,
scrollbar_state,
}
}
@ -220,6 +230,43 @@ impl ThreadHistory {
cx.notify();
}
fn render_scrollbar(&self, cx: &mut Context<Self>) -> Option<Stateful<Div>> {
if !(self.scrollbar_visibility || self.scrollbar_state.is_dragging()) {
return None;
}
Some(
div()
.occlude()
.id("thread-history-scroll")
.h_full()
.bg(cx.theme().colors().panel_background.opacity(0.8))
.border_l_1()
.border_color(cx.theme().colors().border_variant)
.absolute()
.right_1()
.top_0()
.bottom_0()
.w_4()
.pl_1()
.cursor_default()
.on_mouse_move(cx.listener(|_, _, _window, cx| {
cx.notify();
cx.stop_propagation()
}))
.on_hover(|_, _window, cx| {
cx.stop_propagation();
})
.on_any_mouse_down(|_, _window, cx| {
cx.stop_propagation();
})
.on_scroll_wheel(cx.listener(|_, _, _window, cx| {
cx.notify();
}))
.children(Scrollbar::vertical(self.scrollbar_state.clone())),
)
}
fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
if let Some(entry) = self.get_match(self.selected_index) {
let task_result = match entry {
@ -305,7 +352,11 @@ impl Render for ThreadHistory {
)
})
.child({
let view = v_flex().overflow_hidden().flex_grow();
let view = v_flex()
.id("list-container")
.relative()
.overflow_hidden()
.flex_grow();
if self.all_entries.is_empty() {
view.justify_center()
@ -322,59 +373,70 @@ impl Render for ThreadHistory {
),
)
} else {
view.p_1().child(
uniform_list(
cx.entity().clone(),
"thread-history",
self.matched_count(),
move |history, range, _window, _cx| {
let range_start = range.start;
let assistant_panel = history.assistant_panel.clone();
view.pr_5()
.child(
uniform_list(
cx.entity().clone(),
"thread-history",
self.matched_count(),
move |history, range, _window, _cx| {
let range_start = range.start;
let assistant_panel = history.assistant_panel.clone();
let render_item = |index: usize,
entry: &HistoryEntry,
highlight_positions: Vec<usize>|
-> Div {
h_flex().w_full().pb_1().child(match entry {
HistoryEntry::Thread(thread) => PastThread::new(
thread.clone(),
assistant_panel.clone(),
selected_index == index + range_start,
highlight_positions,
)
.into_any_element(),
HistoryEntry::Context(context) => PastContext::new(
context.clone(),
assistant_panel.clone(),
selected_index == index + range_start,
highlight_positions,
)
.into_any_element(),
})
};
if history.has_search_query() {
history.matches[range]
.iter()
.enumerate()
.filter_map(|(index, m)| {
history.all_entries.get(m.candidate_id).map(|entry| {
render_item(index, entry, m.positions.clone())
})
let render_item = |index: usize,
entry: &HistoryEntry,
highlight_positions: Vec<usize>|
-> Div {
h_flex().w_full().pb_1().child(match entry {
HistoryEntry::Thread(thread) => PastThread::new(
thread.clone(),
assistant_panel.clone(),
selected_index == index + range_start,
highlight_positions,
)
.into_any_element(),
HistoryEntry::Context(context) => PastContext::new(
context.clone(),
assistant_panel.clone(),
selected_index == index + range_start,
highlight_positions,
)
.into_any_element(),
})
.collect()
} else {
history.all_entries[range]
.iter()
.enumerate()
.map(|(index, entry)| render_item(index, entry, vec![]))
.collect()
}
},
};
if history.has_search_query() {
history.matches[range]
.iter()
.enumerate()
.filter_map(|(index, m)| {
history.all_entries.get(m.candidate_id).map(
|entry| {
render_item(
index,
entry,
m.positions.clone(),
)
},
)
})
.collect()
} else {
history.all_entries[range]
.iter()
.enumerate()
.map(|(index, entry)| render_item(index, entry, vec![]))
.collect()
}
},
)
.p_1()
.track_scroll(self.scroll_handle.clone())
.flex_grow(),
)
.track_scroll(self.scroll_handle.clone())
.flex_grow(),
)
.when_some(self.render_scrollbar(cx), |div, scrollbar| {
div.child(scrollbar)
})
}
})
}
@ -440,6 +502,7 @@ impl RenderOnce for PastThread {
IconButton::new("delete", IconName::TrashAlt)
.shape(IconButtonShape::Square)
.icon_size(IconSize::XSmall)
.icon_color(Color::Muted)
.tooltip(move |window, cx| {
Tooltip::for_action("Delete", &RemoveSelectedThread, window, cx)
})
@ -531,6 +594,7 @@ impl RenderOnce for PastContext {
IconButton::new("delete", IconName::TrashAlt)
.shape(IconButtonShape::Square)
.icon_size(IconSize::XSmall)
.icon_color(Color::Muted)
.tooltip(move |window, cx| {
Tooltip::for_action("Delete", &RemoveSelectedThread, window, cx)
})