feat: add event listeners and topic handling improvements #181

- Added event listeners for estimated token count and add new topic events.
- Updated default topic handling when clearing messages.
- Removed feature to add new topics directly in Navbar and replaced it with emitting an event to create a new topic.
- Added the functionality to add new topics, clear messages, and handle topic switching with improved conditional logic.
- The event constants configuration has been updated to include two new event names.

src/renderer/src/pages/home/Inputbar/Inputbar.tsx

@@ -248,10 +248,13 @@ const Inputbar: FC<Props> = ({ assistant, setActiveTopic }) => {
       EventEmitter.on(EVENT_NAMES.ESTIMATED_TOKEN_COUNT, ({ tokensCount, contextCount }) => {
         _setEstimateTokenCount(tokensCount)
         setContextCount(contextCount)
+      }),
+      EventEmitter.on(EVENT_NAMES.ADD_NEW_TOPIC, () => {
+        addNewTopic()
       })
     ]
     return () => unsubscribes.forEach((unsub) => unsub())
-  }, [])
+  }, [addNewTopic])
 
   useEffect(() => {
     textareaRef.current?.focus()

src/renderer/src/pages/home/Messages/Messages.tsx

@@ -131,7 +131,8 @@ const Messages: FC<Props> = ({ assistant, topic, setActiveTopic }) => {
       EventEmitter.on(EVENT_NAMES.AI_AUTO_RENAME, autoRenameTopic),
       EventEmitter.on(EVENT_NAMES.CLEAR_MESSAGES, () => {
         setMessages([])
-        updateTopic({ ...topic, messages: [] })
+        const defaultTopic = getDefaultTopic(assistant.id)
+        updateTopic({ ...topic, name: defaultTopic.name, messages: [] })
         TopicManager.clearTopicMessages(topic.id)
       }),
       EventEmitter.on(EVENT_NAMES.EXPORT_TOPIC_IMAGE, async () => {

src/renderer/src/pages/home/Navbar.tsx

@@ -4,11 +4,9 @@ import AssistantSettingPopup from '@renderer/components/AssistantSettings'
 import { HStack } from '@renderer/components/Layout'
 import { isMac, isWindows } from '@renderer/config/constant'
 import { useTheme } from '@renderer/context/ThemeProvider'
-import db from '@renderer/databases'
 import { useAssistant } from '@renderer/hooks/useAssistant'
 import { useSettings } from '@renderer/hooks/useSettings'
 import { useShowAssistants, useShowTopics } from '@renderer/hooks/useStore'
-import { getDefaultTopic } from '@renderer/services/assistant'
 import { EVENT_NAMES, EventEmitter } from '@renderer/services/event'
 import { Assistant, Topic } from '@renderer/types'
 import { Switch } from 'antd'
@@ -24,8 +22,8 @@ interface Props {
   setActiveTopic: (topic: Topic) => void
 }
 
-const HeaderNavbar: FC<Props> = ({ activeAssistant, setActiveTopic }) => {
-  const { assistant, addTopic } = useAssistant(activeAssistant.id)
+const HeaderNavbar: FC<Props> = ({ activeAssistant }) => {
+  const { assistant } = useAssistant(activeAssistant.id)
   const { showAssistants, toggleShowAssistants } = useShowAssistants()
   const { theme, toggleTheme } = useTheme()
   const { topicPosition } = useSettings()
@@ -33,13 +31,10 @@ const HeaderNavbar: FC<Props> = ({ activeAssistant, setActiveTopic }) => {
   const { t } = useTranslation()
 
   const addNewTopic = useCallback(() => {
-    const topic = getDefaultTopic(assistant.id)
-    addTopic(topic)
-    setActiveTopic(topic)
-    db.topics.add({ id: topic.id, messages: [] })
+    EventEmitter.emit(EVENT_NAMES.ADD_NEW_TOPIC)
     window.message.success({ content: t('message.topic.added'), key: 'topic-added' })
     setTimeout(() => EventEmitter.emit(EVENT_NAMES.SHOW_TOPIC_SIDEBAR), 0)
-  }, [addTopic, assistant.id, setActiveTopic, t])
+  }, [t])
 
   return (
     <Navbar>

src/renderer/src/pages/home/Tabs/Topics.tsx

@@ -29,7 +29,7 @@ interface Props {
 
 const Topics: FC<Props> = ({ assistant: _assistant, activeTopic, setActiveTopic }) => {
   const { assistants } = useAssistants()
-  const { assistant, removeTopic, moveTopic, updateTopic, updateTopics } = useAssistant(_assistant.id)
+  const { assistant, removeTopic, moveTopic, updateTopic, updateTopics, addTopic } = useAssistant(_assistant.id)
   const { t } = useTranslation()
   const generating = useAppSelector((state) => state.runtime.generating)
 
@@ -39,11 +39,9 @@ const Topics: FC<Props> = ({ assistant: _assistant, activeTopic, setActiveTopic
         window.message.warning({ content: t('message.switch.disabled'), key: 'generating' })
         return
       }
-      if (assistant.topics.length > 1) {
-        const index = findIndex(assistant.topics, (t) => t.id === topic.id)
-        setActiveTopic(assistant.topics[index + 1 === assistant.topics.length ? 0 : index + 1])
-        removeTopic(topic)
-      }
+      const index = findIndex(assistant.topics, (t) => t.id === topic.id)
+      setActiveTopic(assistant.topics[index + 1 === assistant.topics.length ? 0 : index + 1])
+      removeTopic(topic)
     },
     [assistant.topics, generating, removeTopic, setActiveTopic, t]
   )
@@ -72,6 +70,12 @@ const Topics: FC<Props> = ({ assistant: _assistant, activeTopic, setActiveTopic
     [generating, setActiveTopic, t]
   )
 
+  const onClearMessages = useCallback(() => {
+    window.keyv.set(EVENT_NAMES.CHAT_COMPLETION_PAUSED, true)
+    store.dispatch(setGenerating(false))
+    EventEmitter.emit(EVENT_NAMES.CLEAR_MESSAGES)
+  }, [])
+
   const getTopicMenuItems = useCallback(
     (topic: Topic) => {
       const menus: MenuProps['items'] = [
@@ -112,11 +116,7 @@ const Topics: FC<Props> = ({ assistant: _assistant, activeTopic, setActiveTopic
             window.modal.confirm({
               title: t('chat.input.clear.content'),
               centered: true,
-              onOk: async () => {
-                window.keyv.set(EVENT_NAMES.CHAT_COMPLETION_PAUSED, true)
-                store.dispatch(setGenerating(false))
-                EventEmitter.emit(EVENT_NAMES.CLEAR_MESSAGES)
-              }
+              onOk: onClearMessages
             })
           }
         },
@@ -162,7 +162,7 @@ const Topics: FC<Props> = ({ assistant: _assistant, activeTopic, setActiveTopic
 
       return menus
     },
-    [assistant, assistants, onDeleteTopic, onMoveTopic, t, updateTopic]
+    [assistant, assistants, onClearMessages, onDeleteTopic, onMoveTopic, t, updateTopic]
   )
 
   return (
@@ -174,11 +174,14 @@ const Topics: FC<Props> = ({ assistant: _assistant, activeTopic, setActiveTopic
             <Dropdown menu={{ items: getTopicMenuItems(topic) }} trigger={['contextMenu']} key={topic.id}>
               <TopicListItem className={isActive ? 'active' : ''} onClick={() => onSwitchTopic(topic)}>
                 <TopicName className="name">{topic.name.replace('`', '')}</TopicName>
-                {assistant.topics.length > 1 && isActive && (
+                {isActive && (
                   <MenuButton
                     className="menu"
                     onClick={(e) => {
                       e.stopPropagation()
+                      if (assistant.topics.length === 1) {
+                        return onClearMessages()
+                      }
                       onDeleteTopic(topic)
                     }}>
                     <CloseOutlined />

src/renderer/src/services/event.ts

@@ -19,5 +19,6 @@ export const EVENT_NAMES = {
   NEW_CONTEXT: 'NEW_CONTEXT',
   NEW_BRANCH: 'NEW_BRANCH',
   EXPORT_TOPIC_IMAGE: 'EXPORT_TOPIC_IMAGE',
-  LOCATE_MESSAGE: 'LOCATE_MESSAGE'
+  LOCATE_MESSAGE: 'LOCATE_MESSAGE',
+  ADD_NEW_TOPIC: 'ADD_NEW_TOPIC'
 }