1use std::sync::Arc;
2
3use assistant_tool::ToolWorkingSet;
4use collections::HashMap;
5use gpui::{
6 list, AbsoluteLength, AnyElement, AppContext, CornersRefinement, DefiniteLength,
7 EdgesRefinement, Empty, Length, ListAlignment, ListState, Model, StyleRefinement, Subscription,
8 TextStyleRefinement, View, WeakView,
9};
10use language::LanguageRegistry;
11use language_model::Role;
12use markdown::{Markdown, MarkdownStyle};
13use settings::Settings as _;
14use theme::ThemeSettings;
15use ui::prelude::*;
16use workspace::Workspace;
17
18use crate::thread::{MessageId, Thread, ThreadError, ThreadEvent};
19use crate::ui::ContextPill;
20
21pub struct ActiveThread {
22 workspace: WeakView<Workspace>,
23 language_registry: Arc<LanguageRegistry>,
24 tools: Arc<ToolWorkingSet>,
25 thread: Model<Thread>,
26 messages: Vec<MessageId>,
27 list_state: ListState,
28 rendered_messages_by_id: HashMap<MessageId, View<Markdown>>,
29 last_error: Option<ThreadError>,
30 _subscriptions: Vec<Subscription>,
31}
32
33impl ActiveThread {
34 pub fn new(
35 thread: Model<Thread>,
36 workspace: WeakView<Workspace>,
37 language_registry: Arc<LanguageRegistry>,
38 tools: Arc<ToolWorkingSet>,
39 cx: &mut ViewContext<Self>,
40 ) -> Self {
41 let subscriptions = vec![
42 cx.observe(&thread, |_, _, cx| cx.notify()),
43 cx.subscribe(&thread, Self::handle_thread_event),
44 ];
45
46 let mut this = Self {
47 workspace,
48 language_registry,
49 tools,
50 thread: thread.clone(),
51 messages: Vec::new(),
52 rendered_messages_by_id: HashMap::default(),
53 list_state: ListState::new(0, ListAlignment::Bottom, px(1024.), {
54 let this = cx.view().downgrade();
55 move |ix, cx: &mut WindowContext| {
56 this.update(cx, |this, cx| this.render_message(ix, cx))
57 .unwrap()
58 }
59 }),
60 last_error: None,
61 _subscriptions: subscriptions,
62 };
63
64 for message in thread.read(cx).messages().cloned().collect::<Vec<_>>() {
65 this.push_message(&message.id, message.text.clone(), cx);
66 }
67
68 this
69 }
70
71 pub fn is_empty(&self) -> bool {
72 self.messages.is_empty()
73 }
74
75 pub fn summary(&self, cx: &AppContext) -> Option<SharedString> {
76 self.thread.read(cx).summary()
77 }
78
79 pub fn last_error(&self) -> Option<ThreadError> {
80 self.last_error.clone()
81 }
82
83 pub fn clear_last_error(&mut self) {
84 self.last_error.take();
85 }
86
87 fn push_message(&mut self, id: &MessageId, text: String, cx: &mut ViewContext<Self>) {
88 let old_len = self.messages.len();
89 self.messages.push(*id);
90 self.list_state.splice(old_len..old_len, 1);
91
92 let theme_settings = ThemeSettings::get_global(cx);
93 let colors = cx.theme().colors();
94 let ui_font_size = TextSize::Default.rems(cx);
95 let buffer_font_size = TextSize::Small.rems(cx);
96 let mut text_style = cx.text_style();
97
98 text_style.refine(&TextStyleRefinement {
99 font_family: Some(theme_settings.ui_font.family.clone()),
100 font_size: Some(ui_font_size.into()),
101 color: Some(cx.theme().colors().text),
102 ..Default::default()
103 });
104
105 let markdown_style = MarkdownStyle {
106 base_text_style: text_style,
107 syntax: cx.theme().syntax().clone(),
108 selection_background_color: cx.theme().players().local().selection,
109 code_block: StyleRefinement {
110 margin: EdgesRefinement {
111 top: Some(Length::Definite(rems(0.5).into())),
112 left: Some(Length::Definite(rems(0.).into())),
113 right: Some(Length::Definite(rems(0.).into())),
114 bottom: Some(Length::Definite(rems(1.).into())),
115 },
116 padding: EdgesRefinement {
117 top: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
118 left: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
119 right: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
120 bottom: Some(DefiniteLength::Absolute(AbsoluteLength::Pixels(Pixels(8.)))),
121 },
122 background: Some(colors.editor_foreground.opacity(0.01).into()),
123 border_color: Some(colors.border_variant.opacity(0.25)),
124 border_widths: EdgesRefinement {
125 top: Some(AbsoluteLength::Pixels(Pixels(1.0))),
126 left: Some(AbsoluteLength::Pixels(Pixels(1.))),
127 right: Some(AbsoluteLength::Pixels(Pixels(1.))),
128 bottom: Some(AbsoluteLength::Pixels(Pixels(1.))),
129 },
130 corner_radii: CornersRefinement {
131 top_left: Some(AbsoluteLength::Pixels(Pixels(2.))),
132 top_right: Some(AbsoluteLength::Pixels(Pixels(2.))),
133 bottom_right: Some(AbsoluteLength::Pixels(Pixels(2.))),
134 bottom_left: Some(AbsoluteLength::Pixels(Pixels(2.))),
135 },
136 text: Some(TextStyleRefinement {
137 font_family: Some(theme_settings.buffer_font.family.clone()),
138 font_size: Some(buffer_font_size.into()),
139 ..Default::default()
140 }),
141 ..Default::default()
142 },
143 inline_code: TextStyleRefinement {
144 font_family: Some(theme_settings.buffer_font.family.clone()),
145 font_size: Some(buffer_font_size.into()),
146 background_color: Some(colors.editor_foreground.opacity(0.01)),
147 ..Default::default()
148 },
149 ..Default::default()
150 };
151
152 let markdown = cx.new_view(|cx| {
153 Markdown::new(
154 text,
155 markdown_style,
156 Some(self.language_registry.clone()),
157 None,
158 cx,
159 )
160 });
161 self.rendered_messages_by_id.insert(*id, markdown);
162 }
163
164 fn handle_thread_event(
165 &mut self,
166 _: Model<Thread>,
167 event: &ThreadEvent,
168 cx: &mut ViewContext<Self>,
169 ) {
170 match event {
171 ThreadEvent::ShowError(error) => {
172 self.last_error = Some(error.clone());
173 }
174 ThreadEvent::StreamedCompletion => {}
175 ThreadEvent::SummaryChanged => {}
176 ThreadEvent::StreamedAssistantText(message_id, text) => {
177 if let Some(markdown) = self.rendered_messages_by_id.get_mut(&message_id) {
178 markdown.update(cx, |markdown, cx| {
179 markdown.append(text, cx);
180 });
181 }
182 }
183 ThreadEvent::MessageAdded(message_id) => {
184 if let Some(message_text) = self
185 .thread
186 .read(cx)
187 .message(*message_id)
188 .map(|message| message.text.clone())
189 {
190 self.push_message(message_id, message_text, cx);
191 }
192
193 cx.notify();
194 }
195 ThreadEvent::UsePendingTools => {
196 let pending_tool_uses = self
197 .thread
198 .read(cx)
199 .pending_tool_uses()
200 .into_iter()
201 .filter(|tool_use| tool_use.status.is_idle())
202 .cloned()
203 .collect::<Vec<_>>();
204
205 for tool_use in pending_tool_uses {
206 if let Some(tool) = self.tools.tool(&tool_use.name, cx) {
207 let task = tool.run(tool_use.input, self.workspace.clone(), cx);
208
209 self.thread.update(cx, |thread, cx| {
210 thread.insert_tool_output(
211 tool_use.assistant_message_id,
212 tool_use.id.clone(),
213 task,
214 cx,
215 );
216 });
217 }
218 }
219 }
220 ThreadEvent::ToolFinished { .. } => {}
221 }
222 }
223
224 fn render_message(&self, ix: usize, cx: &mut ViewContext<Self>) -> AnyElement {
225 let message_id = self.messages[ix];
226 let Some(message) = self.thread.read(cx).message(message_id) else {
227 return Empty.into_any();
228 };
229
230 let Some(markdown) = self.rendered_messages_by_id.get(&message_id) else {
231 return Empty.into_any();
232 };
233
234 let context = self.thread.read(cx).context_for_message(message_id);
235 let colors = cx.theme().colors();
236
237 let (role_icon, role_name, role_color) = match message.role {
238 Role::User => (IconName::Person, "You", Color::Muted),
239 Role::Assistant => (IconName::ZedAssistant, "Assistant", Color::Accent),
240 Role::System => (IconName::Settings, "System", Color::Default),
241 };
242
243 div()
244 .id(("message-container", ix))
245 .py_1()
246 .px_2()
247 .child(
248 v_flex()
249 .border_1()
250 .border_color(colors.border_variant)
251 .bg(colors.editor_background)
252 .rounded_md()
253 .child(
254 h_flex()
255 .py_1p5()
256 .px_2p5()
257 .border_b_1()
258 .border_color(colors.border_variant)
259 .justify_between()
260 .child(
261 h_flex()
262 .gap_1p5()
263 .child(
264 Icon::new(role_icon)
265 .size(IconSize::XSmall)
266 .color(role_color),
267 )
268 .child(
269 Label::new(role_name)
270 .size(LabelSize::XSmall)
271 .color(role_color),
272 ),
273 ),
274 )
275 .child(v_flex().p_2p5().text_ui(cx).child(markdown.clone()))
276 .when_some(context, |parent, context| {
277 parent.child(
278 h_flex().flex_wrap().gap_1().p_1p5().children(
279 context
280 .iter()
281 .map(|context| ContextPill::new(context.clone())),
282 ),
283 )
284 }),
285 )
286 .into_any()
287 }
288}
289
290impl Render for ActiveThread {
291 fn render(&mut self, _cx: &mut ViewContext<Self>) -> impl IntoElement {
292 list(self.list_state.clone()).flex_1().py_1()
293 }
294}