1use std::sync::Arc;
2
3use assistant_tool::ToolWorkingSet;
4use collections::HashMap;
5use gpui::{
6 list, AbsoluteLength, AnyElement, AppContext, DefiniteLength, EdgesRefinement, Empty, Length,
7 ListAlignment, ListOffset, ListState, Model, StyleRefinement, Subscription,
8 TextStyleRefinement, UnderlineStyle, 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 pub(crate) 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(1.0).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(0.3)),
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 text: Some(TextStyleRefinement {
131 font_family: Some(theme_settings.buffer_font.family.clone()),
132 font_size: Some(buffer_font_size.into()),
133 ..Default::default()
134 }),
135 ..Default::default()
136 },
137 inline_code: TextStyleRefinement {
138 font_family: Some(theme_settings.buffer_font.family.clone()),
139 font_size: Some(buffer_font_size.into()),
140 background_color: Some(colors.editor_foreground.opacity(0.01)),
141 ..Default::default()
142 },
143 link: TextStyleRefinement {
144 background_color: Some(colors.editor_foreground.opacity(0.025)),
145 underline: Some(UnderlineStyle {
146 color: Some(colors.text_accent.opacity(0.5)),
147 thickness: px(1.),
148 ..Default::default()
149 }),
150 ..Default::default()
151 },
152 ..Default::default()
153 };
154
155 let markdown = cx.new_view(|cx| {
156 Markdown::new(
157 text,
158 markdown_style,
159 Some(self.language_registry.clone()),
160 None,
161 cx,
162 )
163 });
164 self.rendered_messages_by_id.insert(*id, markdown);
165 self.list_state.scroll_to(ListOffset {
166 item_ix: old_len,
167 offset_in_item: Pixels(0.0),
168 });
169 }
170
171 fn handle_thread_event(
172 &mut self,
173 _: Model<Thread>,
174 event: &ThreadEvent,
175 cx: &mut ViewContext<Self>,
176 ) {
177 match event {
178 ThreadEvent::ShowError(error) => {
179 self.last_error = Some(error.clone());
180 }
181 ThreadEvent::StreamedCompletion => {}
182 ThreadEvent::SummaryChanged => {}
183 ThreadEvent::StreamedAssistantText(message_id, text) => {
184 if let Some(markdown) = self.rendered_messages_by_id.get_mut(&message_id) {
185 markdown.update(cx, |markdown, cx| {
186 markdown.append(text, cx);
187 });
188 }
189 }
190 ThreadEvent::MessageAdded(message_id) => {
191 if let Some(message_text) = self
192 .thread
193 .read(cx)
194 .message(*message_id)
195 .map(|message| message.text.clone())
196 {
197 self.push_message(message_id, message_text, cx);
198 }
199
200 cx.notify();
201 }
202 ThreadEvent::UsePendingTools => {
203 let pending_tool_uses = self
204 .thread
205 .read(cx)
206 .pending_tool_uses()
207 .into_iter()
208 .filter(|tool_use| tool_use.status.is_idle())
209 .cloned()
210 .collect::<Vec<_>>();
211
212 for tool_use in pending_tool_uses {
213 if let Some(tool) = self.tools.tool(&tool_use.name, cx) {
214 let task = tool.run(tool_use.input, self.workspace.clone(), cx);
215
216 self.thread.update(cx, |thread, cx| {
217 thread.insert_tool_output(
218 tool_use.assistant_message_id,
219 tool_use.id.clone(),
220 task,
221 cx,
222 );
223 });
224 }
225 }
226 }
227 ThreadEvent::ToolFinished { .. } => {}
228 }
229 }
230
231 fn render_message(&self, ix: usize, cx: &mut ViewContext<Self>) -> AnyElement {
232 let message_id = self.messages[ix];
233 let Some(message) = self.thread.read(cx).message(message_id) else {
234 return Empty.into_any();
235 };
236
237 let Some(markdown) = self.rendered_messages_by_id.get(&message_id) else {
238 return Empty.into_any();
239 };
240
241 let context = self.thread.read(cx).context_for_message(message_id);
242 let colors = cx.theme().colors();
243
244 let (role_icon, role_name, role_color) = match message.role {
245 Role::User => (IconName::Person, "You", Color::Muted),
246 Role::Assistant => (IconName::ZedAssistant, "Assistant", Color::Accent),
247 Role::System => (IconName::Settings, "System", Color::Default),
248 };
249
250 div()
251 .id(("message-container", ix))
252 .py_1()
253 .px_2()
254 .child(
255 v_flex()
256 .border_1()
257 .border_color(colors.border_variant)
258 .bg(colors.editor_background)
259 .rounded_md()
260 .child(
261 h_flex()
262 .py_1p5()
263 .px_2p5()
264 .border_b_1()
265 .border_color(colors.border_variant)
266 .justify_between()
267 .child(
268 h_flex()
269 .gap_1p5()
270 .child(
271 Icon::new(role_icon)
272 .size(IconSize::XSmall)
273 .color(role_color),
274 )
275 .child(
276 Label::new(role_name)
277 .size(LabelSize::XSmall)
278 .color(role_color),
279 ),
280 ),
281 )
282 .child(div().p_2p5().text_ui(cx).child(markdown.clone()))
283 .when_some(context, |parent, context| {
284 if !context.is_empty() {
285 parent.child(h_flex().flex_wrap().gap_1().px_1p5().pb_1p5().children(
286 context.iter().map(|context| {
287 ContextPill::new_added(context.clone(), false, None)
288 }),
289 ))
290 } else {
291 parent
292 }
293 }),
294 )
295 .into_any()
296 }
297}
298
299impl Render for ActiveThread {
300 fn render(&mut self, _cx: &mut ViewContext<Self>) -> impl IntoElement {
301 list(self.list_state.clone()).flex_1().py_1()
302 }
303}