feat(chat): 消息气泡长按菜单（复制/修改/追问/选取文字/删除）

- 长按任意消息气泡弹出 DropdownMenu - 复制：全文写入剪贴板 - 修改：仅用户消息，回填到输入框供编辑重发 - 追问：引用消息前 60 字填入输入框（> 引用\n\n 格式） - 选取文字：AlertDialog + SelectionContainer，系统长按选文 - 删除：确认 Dialog 后删单条消息（ChatDao.deleteMessage） - 流式消息（inProgress）长按无响应，防误触 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

feat(chat): 消息气泡长按菜单（复制/修改/追问/选取文字/删除）
- 长按任意消息气泡弹出 DropdownMenu - 复制：全文写入剪贴板 - 修改：仅用户消息，回填到输入框供编辑重发 - 追问：引用消息前 60 字填入输入框（> 引用\n\n 格式） - 选取文字：AlertDialog + SelectionContainer，系统长按选文 - 删除：确认 Dialog 后删单条消息（ChatDao.deleteMessage） - 流式消息（inProgress）长按无响应，防误触 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
yibo
1 parent 30826007
Showing 3 changed files with 116 additions and 13 deletions
lifelog-recorder/app/src/main/kotlin/com/lemon/lifelog/ChatScreen.kt
lifelog-recorder/app/src/main/kotlin/com/lemon/lifelog/chat/ChatViewModel.kt
lifelog-recorder/app/src/main/kotlin/com/lemon/lifelog/data/Daos.kt
 package com.lemon.lifelog
+import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -52,7 +54,10 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.foundation.text.selection.SelectionContainer
+import androidx.compose.ui.platform.LocalClipboardManager
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import com.lemon.lifelog.chat.ChatConfig
@@ -177,15 +182,36 @@ internal fun ChatTab(repo: Repository) {
                         )
                     }
                 } else {
+                    val clipboard = LocalClipboardManager.current
                     LazyColumn(
                         state = listState,
                         modifier = Modifier.fillMaxSize().padding(horizontal = 12.dp),
                         verticalArrangement = Arrangement.spacedBy(8.dp),
                     ) {
-                        items(messages, key = { it.id }) { m -> MessageBubble(m.role, m.content) }
+                        items(messages, key = { it.id }) { m ->
+                            MessageBubble(
+                                role = m.role,
+                                content = m.content,
+                                onCopy = { clipboard.setText(AnnotatedString(m.content)) },
+                                onEdit = if (m.role == "user") {{ vm.input = m.content }} else null,
+                                onFollowUp = {
+                                    val preview = m.content.take(60).let { s -> if (m.content.length > 60) "$s…" else s }
+                                    vm.input = "> $preview\n\n"
+                                },
+                                onDelete = { vm.deleteMessage(m.id) },
+                            )
+                        }
                         if (vm.streaming) {
                             item(key = "streaming") {
-                                MessageBubble("assistant", vm.streamingText.ifEmpty { "…" }, inProgress = true)
+                                MessageBubble(
+                                    role = "assistant",
+                                    content = vm.streamingText.ifEmpty { "…" },
+                                    inProgress = true,
+                                    onCopy = { clipboard.setText(AnnotatedString(vm.streamingText)) },
+                                    onEdit = null,
+                                    onFollowUp = {},
+                                    onDelete = {},
+                                )
                             }
                         }
                     }
@@ -286,26 +312,94 @@ private fun TargetSelector(targets: List&lt;ChatTarget&gt;, selected: ChatTarget, onSe
     }
 }
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
-private fun MessageBubble(role: String, content: String, inProgress: Boolean = false) {
+private fun MessageBubble(
+    role: String,
+    content: String,
+    inProgress: Boolean = false,
+    onCopy: () -> Unit,
+    onEdit: (() -> Unit)?,      // null = 不适用（AI 消息）
+    onFollowUp: () -> Unit,
+    onDelete: () -> Unit,
+) {
     val isUser = role == "user"
     val bubbleColor = if (isUser) MaterialTheme.colorScheme.primaryContainer else MaterialTheme.colorScheme.surfaceVariant
+    var showMenu by remember { mutableStateOf(false) }
+    var showSelectDialog by remember { mutableStateOf(false) }
+    var showDeleteConfirm by remember { mutableStateOf(false) }
+
     Row(
         modifier = Modifier.fillMaxWidth(),
         horizontalArrangement = if (isUser) Arrangement.End else Arrangement.Start,
     ) {
-        Surface(
-            color = bubbleColor,
-            shape = RoundedCornerShape(14.dp),
-            modifier = Modifier.widthIn(max = 300.dp),
-        ) {
-            Text(
-                content + if (inProgress) " ▍" else "",
-                style = MaterialTheme.typography.bodyMedium,
-                modifier = Modifier.padding(horizontal = 12.dp, vertical = 8.dp),
-            )
+        Box {
+            Surface(
+                color = bubbleColor,
+                shape = RoundedCornerShape(14.dp),
+                modifier = Modifier
+                    .widthIn(max = 300.dp)
+                    .combinedClickable(
+                        onClick = {},
+                        onLongClick = { if (!inProgress) showMenu = true },
+                    ),
+            ) {
+                Text(
+                    content + if (inProgress) " ▍" else "",
+                    style = MaterialTheme.typography.bodyMedium,
+                    modifier = Modifier.padding(horizontal = 12.dp, vertical = 8.dp),
+                )
+            }
+
+            DropdownMenu(expanded = showMenu, onDismissRequest = { showMenu = false }) {
+                DropdownMenuItem(
+                    text = { Text("复制") },
+                    onClick = { onCopy(); showMenu = false },
+                )
+                if (isUser && onEdit != null) {
+                    DropdownMenuItem(
+                        text = { Text("修改") },
+                        onClick = { onEdit(); showMenu = false },
+                    )
+                }
+                DropdownMenuItem(
+                    text = { Text("追问") },
+                    onClick = { onFollowUp(); showMenu = false },
+                )
+                DropdownMenuItem(
+                    text = { Text("选取文字") },
+                    onClick = { showSelectDialog = true; showMenu = false },
+                )
+                DropdownMenuItem(
+                    text = { Text("删除", color = MaterialTheme.colorScheme.error) },
+                    onClick = { showDeleteConfirm = true; showMenu = false },
+                )
+            }
         }
     }
+
+    if (showSelectDialog) {
+        AlertDialog(
+            onDismissRequest = { showSelectDialog = false },
+            title = { Text(if (isUser) "我的消息" else "AI 回复") },
+            text = { SelectionContainer { Text(content, style = MaterialTheme.typography.bodyMedium) } },
+            confirmButton = { TextButton(onClick = { showSelectDialog = false }) { Text("关闭") } },
+        )
+    }
+
+    if (showDeleteConfirm) {
+        AlertDialog(
+            onDismissRequest = { showDeleteConfirm = false },
+            title = { Text("删除消息") },
+            text = { Text("确认删除这条消息？") },
+            confirmButton = {
+                TextButton(onClick = { onDelete(); showDeleteConfirm = false }) {
+                    Text("删除", color = MaterialTheme.colorScheme.error)
+                }
+            },
+            dismissButton = { TextButton(onClick = { showDeleteConfirm = false }) { Text("取消") } },
+        )
+    }
 }
 @Composable
@@ -97,6 +97,12 @@ class ChatViewModel(app: Application) : AndroidViewModel(app) {
         }
     }
+    fun deleteMessage(id: Long) {
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) { repo.chats.deleteMessage(id) }
+        }
+    }
+
     fun send() {
         val text = input.trim()
         if (text.isEmpty() || streaming) return
@@ -1054,6 +1054,9 @@ interface ChatDao {
     @Query("DELETE FROM chat_messages WHERE conversationId = :cid")
     suspend fun deleteMessages(cid: Long)
+    @Query("DELETE FROM chat_messages WHERE id = :id")
+    suspend fun deleteMessage(id: Long)
+
     @Query("DELETE FROM chat_conversations WHERE id = :id")
     suspend fun deleteConversation(id: Long)
 }