@@ -0,0 +1,2657 @@
1+@file:Suppress("TooManyFunctions")
3+package soy.iko.opencode.ui.chat
5+import android.app.Activity
6+import android.content.Intent
8+import android.speech.RecognizerIntent
9+import androidx.activity.compose.BackHandler
10+import androidx.activity.compose.rememberLauncherForActivityResult
11+import androidx.activity.result.PickVisualMediaRequest
12+import androidx.activity.result.contract.ActivityResultContracts
13+import androidx.compose.animation.AnimatedVisibility
14+import androidx.compose.animation.core.RepeatMode
15+import androidx.compose.animation.core.animateFloat
16+import androidx.compose.animation.core.infiniteRepeatable
17+import androidx.compose.animation.core.rememberInfiniteTransition
18+import androidx.compose.animation.core.tween
19+import androidx.compose.foundation.background
20+import androidx.compose.foundation.clickable
21+import androidx.compose.foundation.content.contentReceiver
22+import androidx.compose.foundation.layout.Arrangement
23+import androidx.compose.foundation.layout.Box
24+import androidx.compose.foundation.layout.Column
25+import androidx.compose.foundation.layout.FlowRow
26+import androidx.compose.foundation.layout.PaddingValues
27+import androidx.compose.foundation.layout.Row
28+import androidx.compose.foundation.layout.Spacer
29+import androidx.compose.foundation.layout.WindowInsets
30+import androidx.compose.foundation.layout.fillMaxSize
31+import androidx.compose.foundation.layout.fillMaxWidth
32+import androidx.compose.foundation.layout.height
33+import androidx.compose.foundation.layout.imePadding
34+import androidx.compose.foundation.layout.navigationBars
35+import androidx.compose.foundation.layout.padding
36+import androidx.compose.foundation.layout.size
37+import androidx.compose.foundation.layout.union
38+import androidx.compose.foundation.layout.widthIn
39+import androidx.compose.foundation.layout.windowInsetsPadding
40+import androidx.compose.foundation.layout.wrapContentWidth
41+import androidx.compose.foundation.lazy.LazyColumn
42+import androidx.compose.foundation.lazy.items
43+import androidx.compose.foundation.lazy.rememberLazyListState
44+import androidx.compose.foundation.shape.RoundedCornerShape
45+import androidx.compose.material.icons.Icons
46+import androidx.compose.material.icons.automirrored.filled.ArrowBack
47+import androidx.compose.material.icons.automirrored.filled.Send
48+import androidx.compose.material.icons.filled.Add
49+import androidx.compose.material.icons.filled.AutoAwesome
50+import androidx.compose.material.icons.filled.Delete
51+import androidx.compose.material.icons.filled.Description
52+import androidx.compose.material.icons.filled.Close
53+import androidx.compose.material.icons.filled.Edit
54+import androidx.compose.material.icons.filled.Expand
55+import androidx.compose.material.icons.filled.ExpandLess
56+import androidx.compose.material.icons.filled.ExpandMore
57+import androidx.compose.material.icons.filled.Search
58+import androidx.compose.material.icons.filled.KeyboardArrowDown
59+import androidx.compose.material.icons.filled.KeyboardArrowUp
60+import androidx.compose.material.icons.filled.Mic
61+import androidx.compose.material.icons.filled.MoreVert
62+import androidx.compose.material.icons.filled.PhotoCamera
63+import androidx.compose.material.icons.filled.PhotoLibrary
64+import androidx.compose.material.icons.filled.Refresh
65+import androidx.compose.material.icons.filled.Restore
66+import androidx.compose.material.icons.automirrored.filled.PlaylistAdd
67+import androidx.compose.material.icons.automirrored.filled.Reply
68+import androidx.compose.material.icons.filled.Schedule
69+import androidx.compose.material.icons.filled.Stop
70+import androidx.compose.material3.AlertDialog
71+import androidx.compose.material3.Badge
72+import androidx.compose.material3.BadgedBox
73+import androidx.compose.material3.Button
74+import androidx.compose.material3.CircularProgressIndicator
75+import androidx.compose.material3.SmallFloatingActionButton
76+import androidx.compose.material3.DropdownMenu
77+import androidx.compose.material3.DropdownMenuItem
78+import androidx.compose.material3.ExperimentalMaterial3Api
79+import androidx.compose.material3.ExtendedFloatingActionButton
80+import androidx.compose.material3.FloatingActionButton
81+import androidx.compose.material3.Icon
82+import androidx.compose.material3.IconButton
83+import androidx.compose.material3.MaterialTheme
84+import androidx.compose.material3.OutlinedTextField
85+import androidx.compose.material3.Scaffold
86+import androidx.compose.material3.SnackbarDuration
87+import androidx.compose.material3.SwipeToDismissBox
88+import androidx.compose.material3.SwipeToDismissBoxValue
89+import androidx.compose.material3.rememberSwipeToDismissBoxState
90+import androidx.compose.material3.SnackbarHost
91+import androidx.compose.material3.SnackbarHostState
92+import androidx.compose.material3.SnackbarResult
93+import androidx.compose.material3.Surface
94+import androidx.compose.material3.Text
95+import androidx.compose.material3.TextButton
96+import androidx.compose.material3.TopAppBar
97+import androidx.compose.material3.pulltorefresh.PullToRefreshBox
98+import androidx.compose.runtime.Composable
99+import androidx.compose.runtime.CompositionLocalProvider
100+import androidx.compose.runtime.DisposableEffect
101+import androidx.compose.runtime.LaunchedEffect
102+import androidx.compose.runtime.derivedStateOf
103+import androidx.compose.runtime.getValue
104+import androidx.compose.runtime.mutableIntStateOf
105+import androidx.compose.runtime.mutableLongStateOf
106+import androidx.compose.runtime.mutableStateOf
107+import androidx.compose.runtime.produceState
108+import androidx.compose.runtime.remember
109+import androidx.compose.runtime.rememberCoroutineScope
110+import androidx.compose.runtime.rememberUpdatedState
111+import androidx.compose.runtime.saveable.rememberSaveable
112+import androidx.compose.runtime.setValue
113+import androidx.compose.runtime.snapshotFlow
114+import androidx.compose.foundation.text.KeyboardActions
115+import androidx.compose.foundation.text.KeyboardOptions
116+import androidx.compose.ui.text.input.KeyboardCapitalization
117+import androidx.compose.ui.Alignment
118+import androidx.compose.ui.Modifier
119+import androidx.compose.ui.draw.alpha
120+import androidx.compose.ui.draw.clip
121+import androidx.compose.ui.focus.focusRequester
122+import androidx.compose.ui.input.key.Key
123+import androidx.compose.ui.input.key.KeyEventType
124+import androidx.compose.ui.input.key.isCtrlPressed
125+import androidx.compose.ui.input.key.isShiftPressed
126+import androidx.compose.ui.input.key.key
127+import androidx.compose.ui.input.key.onPreviewKeyEvent
128+import androidx.compose.ui.input.key.type
129+import androidx.compose.ui.layout.onSizeChanged
130+import androidx.compose.ui.platform.LocalContext
131+import androidx.compose.ui.platform.LocalDensity
132+import androidx.compose.ui.platform.LocalHapticFeedback
133+import androidx.compose.ui.platform.LocalView
134+import androidx.compose.ui.platform.testTag
135+import androidx.compose.ui.res.stringResource
136+import androidx.compose.ui.semantics.Role
137+import androidx.compose.ui.semantics.contentDescription
138+import androidx.compose.ui.semantics.heading
139+import androidx.compose.ui.semantics.semantics
140+import androidx.compose.ui.text.input.ImeAction
141+import androidx.compose.ui.text.style.TextOverflow
142+import androidx.compose.ui.unit.dp
143+import androidx.lifecycle.compose.collectAsStateWithLifecycle
144+import androidx.lifecycle.viewmodel.compose.viewModel
145+import kotlinx.coroutines.Dispatchers
146+import kotlinx.coroutines.coroutineScope
147+import kotlinx.coroutines.delay
148+import kotlinx.coroutines.flow.distinctUntilChanged
149+import kotlinx.coroutines.launch
150+import kotlinx.coroutines.withContext
151+import soy.iko.opencode.data.model.Part
152+import soy.iko.opencode.data.model.MessageWithParts
153+import soy.iko.opencode.data.model.ReasoningPart
154+import soy.iko.opencode.data.model.TextPart
155+import soy.iko.opencode.data.model.ToolCompleted
156+import soy.iko.opencode.data.model.ToolError
157+import soy.iko.opencode.data.model.ToolPart
158+import soy.iko.opencode.data.model.ToolRunning
159+import soy.iko.opencode.data.network.EventStreamClient
160+import soy.iko.opencode.data.network.NetworkConfig
161+import soy.iko.opencode.di.AppContainer
162+import soy.iko.opencode.R
163+import soy.iko.opencode.ui.components.CommandPalette
164+import soy.iko.opencode.ui.components.ConnectionBanner
165+import soy.iko.opencode.ui.components.DiffView
166+import soy.iko.opencode.ui.components.PaletteAction
167+import soy.iko.opencode.ui.components.LocalReducedMotion
168+import soy.iko.opencode.ui.components.LocalSearchHighlight
169+import soy.iko.opencode.ui.components.reducedMotionAnimateItem
170+import soy.iko.opencode.ui.components.copyToClipboard
171+import soy.iko.opencode.ui.components.LocalRelativeTimeTick
172+import soy.iko.opencode.ui.components.rememberRelativeTimeTick
173+import soy.iko.opencode.ui.components.rememberVisibilityTransitions
174+import soy.iko.opencode.ui.components.showToast
175+import soy.iko.opencode.ui.components.toImageContext
176+import soy.iko.opencode.ui.vmFactory
177+import soy.iko.opencode.util.runCatchingCancellable
179+@OptIn(ExperimentalMaterial3Api::class)
182+ container: AppContainer,
185+ onOpenFile: ((String) -> Unit)? = null,
186+ onOpenSession: ((String) -> Unit)? = null,
188+ val vm: ChatViewModel = viewModel(key = sessionId, factory = vmFactory { ChatViewModel(container, sessionId) })
189+ val hasMessages by vm.hasMessages.collectAsStateWithLifecycle()
190+ val running by vm.running.collectAsStateWithLifecycle()
191+ val aborting by vm.aborting.collectAsStateWithLifecycle()
192+ val loading by vm.loading.collectAsStateWithLifecycle()
193+ val loadError by vm.loadError.collectAsStateWithLifecycle()
194+ val refreshing by vm.refreshing.collectAsStateWithLifecycle()
195+ val models by vm.models.collectAsStateWithLifecycle()
196+ val modelsLoading by vm.modelsLoading.collectAsStateWithLifecycle()
197+ val modelsError by vm.modelsError.collectAsStateWithLifecycle()
198+ val selectedModel by vm.selectedModel.collectAsStateWithLifecycle()
199+ val connectionState by vm.connectionState.collectAsStateWithLifecycle()
200+ val pendingPermission by vm.pendingPermission.collectAsStateWithLifecycle()
201+ val permissionProgress by vm.permissionProgress.collectAsStateWithLifecycle()
202+ val agents by vm.agents.collectAsStateWithLifecycle()
203+ val agentsLoading by vm.agentsLoading.collectAsStateWithLifecycle()
204+ val agentsError by vm.agentsError.collectAsStateWithLifecycle()
205+ val selectedAgent by vm.selectedAgent.collectAsStateWithLifecycle()
206+ val commands by vm.commands.collectAsStateWithLifecycle()
207+ val commandsLoading by vm.commandsLoading.collectAsStateWithLifecycle()
208+ val commandsError by vm.commandsError.collectAsStateWithLifecycle()
209+ val sessionTitle by vm.sessionTitle.collectAsStateWithLifecycle()
210+ val sessionDeleted by vm.sessionDeleted.collectAsStateWithLifecycle()
211+ val draft by vm.draft.collectAsStateWithLifecycle()
212+ val attachments by vm.attachments.collectAsStateWithLifecycle()
213+ val reverted by vm.reverted.collectAsStateWithLifecycle()
214+ val revertDiff by vm.revertDiff.collectAsStateWithLifecycle()
215+ val shareUrl by vm.shareUrl.collectAsStateWithLifecycle()
216+ val reconnecting by vm.reconnecting.collectAsStateWithLifecycle()
217+ val sendOnEnter by container.settingsStore.sendOnEnter.collectAsStateWithLifecycle(initialValue = true)
218+ val isOnline by container.isOnline.collectAsStateWithLifecycle()
219+ val haptics = LocalHapticFeedback.current
220+ val scope = rememberCoroutineScope()
221+ val shareContext = LocalContext.current
222+ val defaultShareSubject = stringResource(R.string.share_subject)
223+ val sessionLabel = stringResource(R.string.session)
224+ val defaultModelLabel = stringResource(R.string.default_model)
225+ val subtitle = remember(selectedModel?.modelLabel, selectedAgent, defaultModelLabel) {
227+ append(selectedModel?.modelLabel ?: defaultModelLabel)
228+ selectedAgent?.let { append(" · $it") }
232+ // Connection profile (with auth) for rendering inline image attachments.
233+ // Collect as state so a server switch recomposes the image context.
234+ val activeConnection by container.activeConnection.collectAsStateWithLifecycle()
235+ val imageContext = remember(activeConnection?.profile) {
236+ activeConnection?.profile?.toImageContext()
239+ // Mark this session as read while the user is viewing it; clear on leave so new
240+ // background activity can badge it again.
241+ DisposableEffect(sessionId) {
242+ container.setCurrentSession(sessionId)
243+ onDispose { if (container.currentSession.value == sessionId) container.setCurrentSession(null) }
246+ // Navigate away when the session is deleted via SSE so the user isn't left
247+ // on a zombie screen showing a conversation that no longer exists. Surface a
248+ // toast (not a snackbar) because the screen is about to be popped — a snackbar
249+ // would be torn down before the user could read it, while a toast survives.
250+ // Covers both SSE-driven deletion (deleted on another device) and a user-
251+ // initiated delete from the chat overflow menu (deleteSession in ChatViewModel
252+ // sets the same flag on success).
253+ val deletedContext = LocalContext.current
254+ LaunchedEffect(sessionDeleted) {
255+ if (sessionDeleted) {
256+ showToast(deletedContext, deletedContext.getString(R.string.session_deleted_chat))
261+ val snackbar = remember { SnackbarHostState() }
262+ val retryLabel = stringResource(R.string.retry)
263+ val inputFocusRequester = remember { androidx.compose.ui.focus.FocusRequester() }
264+ // Dedicated focus requester for the in-conversation search field. The overflow menu's
265+ // "Find in conversation" and Ctrl+F previously called inputFocusRequester.requestFocus()
266+ // (the composer), so typing went to the composer instead of the search field.
267+ val searchFocusRequester = remember { androidx.compose.ui.focus.FocusRequester() }
268+ var showModelPicker by rememberSaveable { mutableStateOf(false) }
269+ var showAgentPicker by rememberSaveable { mutableStateOf(false) }
270+ var showTitleMenu by rememberSaveable { mutableStateOf(false) }
271+ var showCommandPicker by rememberSaveable { mutableStateOf(false) }
272+ var showExitConfirm by rememberSaveable { mutableStateOf(false) }
273+ var showStopConfirm by rememberSaveable { mutableStateOf(false) }
274+ var showOverflowMenu by rememberSaveable { mutableStateOf(false) }
275+ var showRenameDialog by rememberSaveable { mutableStateOf(false) }
276+ var showDeleteDialog by rememberSaveable { mutableStateOf(false) }
277+ var showShellDialog by rememberSaveable { mutableStateOf(false) }
278+ var showPalette by rememberSaveable { mutableStateOf(false) }
279+ var showShortcutsDialog by rememberSaveable { mutableStateOf(false) }
280+ var searchActive by rememberSaveable { mutableStateOf(false) }
281+ var chatSearch by rememberSaveable { mutableStateOf("") }
282+ // Index of the currently-focused in-conversation search match (into the filtered list).
283+ // Drives the up/down navigation: the search bar's arrows step through matches and scroll
284+ // the list to each one, mirroring desktop chat apps (the bare filtered list previously
285+ // required reading each message to find the term).
286+ var searchPos by rememberSaveable { mutableIntStateOf(0) }
287+ // Summarize and init (generate AGENTS.md) are irreversible, so a single tap is gated behind
288+ // a confirmation dialog (from both the overflow menu and the command palette).
289+ var showSummarizeConfirm by rememberSaveable { mutableStateOf(false) }
290+ var showInitConfirm by rememberSaveable { mutableStateOf(false) }
292+ // Command-palette entries (keyboard-first: Ctrl+K). Labels resolved here so the remembered
293+ // action list doesn't need a Composable context. Actions map to the same handlers the
294+ // overflow menu drives, so the palette is a keyboard shortcut to them, not a parallel path.
295+ val paletteModelLabel = stringResource(R.string.palette_switch_model)
296+ val paletteAgentLabel = stringResource(R.string.palette_choose_agent)
297+ val paletteCommandLabel = stringResource(R.string.palette_run_command)
298+ val paletteSummarizeLabel = stringResource(R.string.palette_summarize)
299+ val paletteRenameLabel = stringResource(R.string.rename_session_chat)
300+ val paletteShellLabel = stringResource(R.string.run_shell_command)
301+ val paletteActions = remember(
302+ paletteModelLabel, paletteAgentLabel, paletteCommandLabel,
303+ paletteSummarizeLabel, paletteRenameLabel, paletteShellLabel, hasMessages, running,
306+ add(PaletteAction("model", paletteModelLabel) { showModelPicker = true })
307+ add(PaletteAction("agent", paletteAgentLabel) { showAgentPicker = true })
308+ add(PaletteAction("command", paletteCommandLabel) { showCommandPicker = true })
309+ if (hasMessages && !running) add(PaletteAction("summarize", paletteSummarizeLabel) { showSummarizeConfirm = true })
310+ if (!running) add(PaletteAction("shell", paletteShellLabel) { showShellDialog = true })
311+ add(PaletteAction("rename", paletteRenameLabel) { showRenameDialog = true })
315+ // Keep the screen awake while the agent is working in *this* session. The foreground
316+ // service that holds process priority during a run is managed app-wide off
317+ // container.anyRunActive (see OpencodeApp) so it survives navigating away from the chat
318+ // mid-run — otherwise leaving the screen would drop priority and Doze could choke the
319+ // SSE stream before the completion notification fires.
320+ val currentView = LocalView.current
321+ val appContext = LocalContext.current.applicationContext
322+ DisposableEffect(running) {
323+ currentView.keepScreenOn = running
324+ onDispose { currentView.keepScreenOn = false }
327+ LaunchedEffect(Unit) {
328+ vm.errorEvents.collect { event ->
329+ // Only a failed *send* is retryable; attaching Retry to any other error (e.g. a
330+ // message-load failure) would silently re-submit the last prompt on tap.
331+ val result = if (event.retryable) {
332+ snackbar.showSnackbar(message = event.message, actionLabel = retryLabel)
334+ snackbar.showSnackbar(event.message)
336+ if (result == androidx.compose.material3.SnackbarResult.ActionPerformed) vm.retryFailed()
340+ // In-place Undo for a user-initiated session delete. The delete is deferred for an undo
341+ // window on the container; show the snackbar over the conversation the user is viewing so
342+ // they can cancel without being navigated to the session list first. If the window expires
343+ // the scheduled delete sets `sessionDeleted` and the effect below navigates away.
344+ val undoLabel = stringResource(R.string.undo)
345+ val sessionDeletedLabel = stringResource(R.string.session_deleted_chat)
346+ LaunchedEffect(Unit) {
347+ vm.deleteUndoEvents.collect {
349+ val dismisser = launch {
350+ delay(NetworkConfig.undoDeleteDelayMs)
351+ snackbar.currentSnackbarData?.dismiss()
353+ val result = snackbar.showSnackbar(
354+ message = sessionDeletedLabel,
355+ actionLabel = undoLabel,
356+ duration = SnackbarDuration.Indefinite,
359+ if (result == SnackbarResult.ActionPerformed) vm.cancelSessionDelete()
364+ // --- Attachments, voice, and share-link plumbing ---
365+ val attachTooLargeMsg = stringResource(R.string.attachment_too_large)
366+ val attachFailedMsg = stringResource(R.string.attachment_failed)
367+ val attachLimitMsg = stringResource(R.string.attachment_limit)
368+ val noCameraMsg = stringResource(R.string.no_camera_app)
369+ val noVoiceMsg = stringResource(R.string.no_voice_app)
370+ val voicePrompt = stringResource(R.string.voice_prompt)
371+ val linkCopiedMsg = stringResource(R.string.link_copied)
372+ val ttsUnavailableMsg = stringResource(R.string.tts_unavailable)
374+ // Count of picks currently being read + base64-encoded off the main thread, so the
375+ // composer can show a staging placeholder immediately (chips only materialize once done).
376+ var stagingCount by remember { mutableStateOf(0) }
378+ // Convert each picked Uri to a base64 attachment off the main thread, honoring the
379+ // per-prompt count cap and surfacing per-file errors without aborting the batch.
380+ fun stageUris(uris: List<Uri>) {
381+ if (uris.isEmpty()) return
386+ if (vm.attachments.value.size >= NetworkConfig.maxAttachments) {
387+ snackbar.showSnackbar(attachLimitMsg)
390+ when (val result = uri.toAttachmentResult(appContext)) {
391+ is AttachmentResult.Ok -> vm.addAttachment(result.attachment)
392+ AttachmentResult.TooLarge -> snackbar.showSnackbar(attachTooLargeMsg)
393+ AttachmentResult.Failed -> snackbar.showSnackbar(attachFailedMsg)
402+ val photoPicker = rememberLauncherForActivityResult(
403+ ActivityResultContracts.PickMultipleVisualMedia(NetworkConfig.maxAttachments),
404+ ) { uris -> stageUris(uris) }
406+ val filePicker = rememberLauncherForActivityResult(
407+ ActivityResultContracts.GetMultipleContents(),
408+ ) { uris -> stageUris(uris) }
410+ // Uri survives a config change mid-capture so the TakePicture result still resolves.
411+ var pendingCaptureUri by rememberSaveable { mutableStateOf<Uri?>(null) }
412+ val cameraLauncher = rememberLauncherForActivityResult(
413+ ActivityResultContracts.TakePicture(),
415+ val uri = pendingCaptureUri
416+ pendingCaptureUri = null
417+ if (success && uri != null) stageUris(listOf(uri))
420+ val voiceLauncher = rememberLauncherForActivityResult(
421+ ActivityResultContracts.StartActivityForResult(),
423+ if (result.resultCode == Activity.RESULT_OK) {
424+ val spoken = result.data
425+ ?.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)
427+ ?.takeIf { it.isNotBlank() }
428+ if (spoken != null) {
429+ // Append to the existing draft rather than replacing, so dictation adds to
430+ // whatever the user already typed.
431+ val current = vm.draft.value
432+ val combined = if (current.isBlank()) spoken else "$current $spoken"
433+ vm.updateDraft(combined.take(NetworkConfig.maxDraftLengthChars))
438+ fun launchCamera() {
439+ val uri = newCameraCaptureUri(appContext)
441+ scope.launch { snackbar.showSnackbar(attachFailedMsg) }
444+ pendingCaptureUri = uri
445+ runCatching { cameraLauncher.launch(uri) }
446+ .onFailure { pendingCaptureUri = null; scope.launch { snackbar.showSnackbar(noCameraMsg) } }
450+ val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH).apply {
451+ putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM)
452+ putExtra(RecognizerIntent.EXTRA_PROMPT, voicePrompt)
454+ runCatching { voiceLauncher.launch(intent) }
455+ .onFailure { scope.launch { snackbar.showSnackbar(noVoiceMsg) } }
458+ // A freshly-created share link is copied to the clipboard so the user can paste it right away.
459+ LaunchedEffect(Unit) {
460+ vm.shareLinkEvents.collect { url ->
461+ copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_share), url)
462+ snackbar.showSnackbar(linkCopiedMsg)
466+ // Navigate to a session freshly branched from a message (branchFrom), once it's created.
467+ // Keyed on Unit (like the sibling one-shot collectors above): keying on the onOpenSession
468+ // lambda would cancel/restart this collector whenever the lambda's identity changes, risking
469+ // a dropped branch-navigation event in the gap.
470+ val branchedMsg = stringResource(R.string.branch_created)
471+ LaunchedEffect(Unit) {
472+ vm.branchEvents.collect { newId ->
473+ showToast(shareContext, branchedMsg)
474+ onOpenSession?.invoke(newId)
478+ // Stage images shared into the app (via the system share sheet) as attachments.
479+ // Keyed on pendingSharedMedia (not Unit) so the effect re-fires when new media arrives
480+ // while this ChatScreen is already composed — which happens in two-pane mode, where the
481+ // detail ChatScreen is persistent (keyed on sessionId) and a LaunchedEffect(Unit) would
482+ // only fire on first composition. consumePendingSharedMedia() atomically drains the
483+ // pending list (compareAndSet to empty), so re-firing on the now-empty value is a no-op.
484+ val pendingSharedMedia by container.pendingSharedMedia.collectAsStateWithLifecycle()
485+ LaunchedEffect(pendingSharedMedia) {
486+ val shared = container.consumePendingSharedMedia()
487+ if (shared.isNotEmpty()) stageUris(shared.map { Uri.parse(it) })
491+ if (vm.send(draft)) {
492+ // TextHandleMove (a light tick) is semantically right for a send commit;
493+ // LongPress is reserved for long-press/swipe gestures.
494+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
498+ BackHandler(enabled = running && !showModelPicker && !showAgentPicker && !showCommandPicker) { showExitConfirm = true }
501+ // Hardware-keyboard shortcuts (tablets / DeX / Chromebooks): Ctrl+K opens the command
502+ // palette; Escape closes it, or stops a run. onPreviewKeyEvent on the Scaffold root sees
503+ // events before the focused text field, but only Ctrl+K / Escape are consumed so normal
504+ // typing (and the composer's own Enter-to-send handling) is untouched.
505+ modifier = Modifier.onPreviewKeyEvent { ev ->
506+ if (ev.type != KeyEventType.KeyDown) return@onPreviewKeyEvent false
508+ ev.isCtrlPressed && ev.key == Key.K -> { showPalette = true; true }
509+ // Ctrl+F opens in-conversation search (the standard find shortcut), focusing
510+ // the field so the user can type immediately.
511+ ev.isCtrlPressed && ev.key == Key.F -> { searchActive = true; true }
512+ ev.key == Key.Escape && showPalette -> { showPalette = false; true }
513+ ev.key == Key.Escape && searchActive -> { searchActive = false; chatSearch = ""; true }
514+ ev.key == Key.Escape && running && !showStopConfirm && !showExitConfirm -> {
515+ showStopConfirm = true; true
523+ val changeLabel = stringResource(R.string.change_model_agent)
524+ // The subtitle reads "model · agent", so tapping the title offers *both*
525+ // — a small menu picks which picker to open. Previously the tap went
526+ // straight to the model picker, leaving the agent changeable only via
527+ // the overflow menu despite the title implying otherwise.
530+ // mergeDescendants so TalkBack reads the title/subtitle Texts as one
531+ // node; the click label rides on `clickable` (onClickLabel) instead of
532+ // an explicit contentDescription, which would have SUPPRESSED the child
533+ // Texts and announced only "Change model and agent".
537+ onClickLabel = changeLabel,
538+ ) { showTitleMenu = true }
539+ .semantics(mergeDescendants = true) {},
540+ verticalAlignment = Alignment.CenterVertically,
542+ Column(modifier = Modifier.weight(1f, fill = false)) {
543+ // maxLines=1 + Ellipsis so a long session title can't wrap and
544+ // push the top bar to multiple lines, shifting the whole layout.
546+ sessionTitle ?: sessionLabel,
548+ overflow = TextOverflow.Ellipsis,
552+ style = MaterialTheme.typography.labelSmall,
553+ color = MaterialTheme.colorScheme.onSurfaceVariant,
555+ overflow = TextOverflow.Ellipsis,
558+ // Always show the affordance so the title reads as tappable even when
559+ // the model catalog failed to load (models empty). Without it the title
560+ // is indistinguishable from plain text and the pickers are effectively
561+ // undiscoverable — and the dropdown items already disable themselves
562+ // while a catalog is loading or unavailable.
564+ Icons.Filled.KeyboardArrowDown,
565+ contentDescription = null,
566+ tint = MaterialTheme.colorScheme.onSurfaceVariant,
567+ modifier = Modifier.size(20.dp),
570+ DropdownMenu(expanded = showTitleMenu, onDismissRequest = { showTitleMenu = false }) {
572+ text = { Text(stringResource(R.string.palette_switch_model)) },
573+ enabled = !modelsLoading || models.isNotEmpty(),
574+ onClick = { showTitleMenu = false; showModelPicker = true },
577+ text = { Text(stringResource(R.string.palette_choose_agent)) },
578+ enabled = !agentsLoading || agents.isNotEmpty(),
579+ onClick = { showTitleMenu = false; showAgentPicker = true },
585+ IconButton(onClick = {
586+ if (running) showExitConfirm = true else onBack()
588+ Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(R.string.back))
592+ // At-a-glance run status in the top bar. When the user is scrolled
593+ // up (jump-to-latest FAB visible), the input-bar Stop button and the
594+ // trailing "working…" row are off-screen, so a top-bar spinner is the
595+ // only signal the agent is still working.
597+ val workingLabel = stringResource(R.string.working)
598+ CircularProgressIndicator(
599+ Modifier.size(18.dp).semantics { contentDescription = workingLabel },
603+ // Manual refresh: forces an SSE reconnect, which re-seeds messages
604+ // from REST. A recovery path when the stream silently drops and the
605+ // auto-reconnect re-seed is slow or fails. Shows a brief spinner as
606+ // immediate tap feedback — the SSE reconnect may not visibly change
607+ // the connection state when already Connected, so without it the tap
608+ // appears to do nothing.
609+ val refreshLabel = stringResource(R.string.refresh)
611+ onClick = { vm.refreshMessages() },
612+ enabled = activeConnection != null && !refreshing,
615+ CircularProgressIndicator(
616+ Modifier.size(18.dp).semantics { contentDescription = refreshLabel },
620+ Icon(Icons.Filled.Refresh, contentDescription = refreshLabel)
623+ // Overflow menu consolidates the less-frequent actions (share,
624+ // commands, agent, model, rename, delete) so the top bar stays
625+ // scannable on narrow phones — previously 5 icons crowded the bar
626+ // alongside the back button and tappable title. Catalog-loading
627+ // spinners stay inline (next to the overflow) so a load state is
628+ // visible without opening the menu.
629+ val moreLabel = stringResource(R.string.more)
630+ val loadingLabel = stringResource(R.string.loading)
631+ val shareLabel = stringResource(R.string.share_conversation)
632+ val commandsLabel = stringResource(R.string.commands)
633+ val renameLabel = stringResource(R.string.rename_session_chat)
634+ val deleteLabel = stringResource(R.string.delete_session_chat)
635+ val createShareLabel = stringResource(R.string.create_share_link)
636+ val copyShareLabel = stringResource(R.string.copy_share_link)
637+ val stopShareLabel = stringResource(R.string.stop_sharing)
638+ val summarizeLabel = stringResource(R.string.summarize_conversation)
639+ val initLabel = stringResource(R.string.generate_agents_md)
640+ val shellLabel = stringResource(R.string.run_shell_command)
642+ IconButton(onClick = { showOverflowMenu = true }) {
643+ Icon(Icons.Filled.MoreVert, contentDescription = moreLabel)
646+ expanded = showOverflowMenu,
647+ onDismissRequest = { showOverflowMenu = false },
650+ text = { Text(shareLabel) },
651+ enabled = hasMessages,
653+ showOverflowMenu = false
655+ val md = withContext(Dispatchers.Default) {
656+ buildConversationMarkdown(vm.messages.value, sessionTitle)
658+ val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
659+ type = "text/markdown"
660+ putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
661+ putExtra(android.content.Intent.EXTRA_TEXT, md)
663+ runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareLabel)) }
664+ .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
669+ text = { Text(commandsLabel) },
670+ enabled = !commandsLoading || commands.isNotEmpty(),
671+ onClick = { showOverflowMenu = false; showCommandPicker = true },
674+ text = { Text(stringResource(R.string.keyboard_shortcuts)) },
675+ onClick = { showOverflowMenu = false; showShortcutsDialog = true },
678+ text = { Text(stringResource(R.string.find_in_conversation)) },
680+ showOverflowMenu = false
682+ // Focus is requested by the LaunchedEffect(searchActive)
683+ // below, which waits for the search field to be composed
684+ // before requesting focus (calling requestFocus here would
685+ // target a field that isn't in the composition yet).
688+ androidx.compose.material3.HorizontalDivider()
689+ // Session sharing: create a public link, copy an existing one, or revoke it.
690+ if (shareUrl == null) {
692+ text = { Text(createShareLabel) },
693+ enabled = hasMessages,
694+ onClick = { showOverflowMenu = false; vm.shareSession() },
698+ text = { Text(copyShareLabel) },
700+ showOverflowMenu = false
702+ copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_share), it)
703+ scope.launch { snackbar.showSnackbar(linkCopiedMsg) }
708+ text = { Text(stopShareLabel) },
709+ onClick = { showOverflowMenu = false; vm.unshareSession() },
713+ text = { Text(summarizeLabel) },
714+ enabled = hasMessages && !running,
715+ onClick = { showOverflowMenu = false; showSummarizeConfirm = true },
718+ text = { Text(initLabel) },
720+ onClick = { showOverflowMenu = false; showInitConfirm = true },
723+ text = { Text(shellLabel) },
725+ onClick = { showOverflowMenu = false; showShellDialog = true },
727+ androidx.compose.material3.HorizontalDivider()
729+ text = { Text(renameLabel) },
730+ onClick = { showOverflowMenu = false; showRenameDialog = true },
733+ text = { Text(deleteLabel, color = MaterialTheme.colorScheme.error) },
734+ onClick = { showOverflowMenu = false; showDeleteDialog = true },
737+ // While a catalog is initially loading (empty list + loading flag),
738+ // show a tiny inline spinner beside the overflow so the user can see
739+ // a load is in progress without opening the menu. Once loaded the
740+ // spinner disappears; the menu items are always enabled (tapping a
741+ // picker with no items shows the "no models/agents/commands" state).
742+ val catalogLoading = (commandsLoading && commands.isEmpty()) ||
743+ (agentsLoading && agents.isEmpty()) ||
744+ (modelsLoading && models.isEmpty())
745+ if (catalogLoading) {
746+ CircularProgressIndicator(
748+ .align(Alignment.TopEnd)
750+ .semantics { contentDescription = loadingLabel },
758+ snackbarHost = { SnackbarHost(snackbar) },
760+ val queuedFollowUp by vm.queuedFollowUp.collectAsStateWithLifecycle()
761+ val todoPlan by vm.todoPlan.collectAsStateWithLifecycle()
762+ val queuedOffline by vm.outbox.collectAsStateWithLifecycle()
763+ val outboxSending by container.outboxSending.collectAsStateWithLifecycle()
765+ // Pinned above the composer so the agent's plan and progress stay visible
766+ // while scrolled up mid-run; renders nothing when there's no plan.
767+ TodoPlanBar(todoPlan)
768+ val bannerMotion = rememberVisibilityTransitions()
771+ enter = bannerMotion.enter,
772+ exit = bannerMotion.exit,
776+ onUndo = { vm.unrevert() },
780+ visible = queuedOffline.isNotEmpty(),
781+ enter = bannerMotion.enter,
782+ exit = bannerMotion.exit,
785+ count = queuedOffline.size,
786+ sending = outboxSending,
787+ onFlush = { vm.flushQueued() },
788+ onDiscard = { vm.discardAllQueued() },
793+ onValueChange = vm::updateDraft,
795+ aborting = aborting,
796+ enabled = activeConnection != null,
797+ sendOnEnter = sendOnEnter,
799+ onAbort = { showStopConfirm = true },
800+ queuedFollowUp = queuedFollowUp,
801+ onQueueFollowUp = vm::queueFollowUp,
802+ onCancelQueue = { vm.queueFollowUp("") },
803+ focusRequester = inputFocusRequester,
804+ attachments = attachments,
805+ staging = stagingCount > 0,
806+ onRemoveAttachment = vm::removeAttachment,
809+ PickVisualMediaRequest(ActivityResultContracts.PickVisualMedia.ImageOnly),
812+ onPickFile = { filePicker.launch("*/*") },
813+ onCamera = { launchCamera() },
814+ onVoice = { launchVoice() },
815+ onPasteImage = { stageUris(it) },
820+ // Collect messages inside the content lambda so streaming token updates
821+ // recompose only this subtree, not the top bar / input bar / 20+ other
822+ // state reads in the ChatScreen body.
823+ val messages by vm.messages.collectAsStateWithLifecycle()
824+ val optimisticStatuses by vm.optimisticStatuses.collectAsStateWithLifecycle()
825+ val listState = rememberLazyListState()
826+ val contentScope = rememberCoroutineScope()
827+ val timeTick = rememberRelativeTimeTick()
828+ // Dismiss the soft keyboard when the user scrolls the message list, a standard Android
829+ // chat affordance for reading while the IME is open. Watching isScrollInProgress via
830+ // snapshotFlow avoids wiring a nested scroll connection and fires on any scroll gesture.
831+ val keyboardController = androidx.compose.ui.platform.LocalSoftwareKeyboardController.current
832+ androidx.compose.runtime.LaunchedEffect(listState) {
833+ androidx.compose.runtime.snapshotFlow { listState.isScrollInProgress }
834+ .distinctUntilChanged()
835+ .collect { scrolling -> if (scrolling) keyboardController?.hide() }
836+ } // Group messages by day and interleave date separators so a long conversation
837+ // has visual "Today"/"Yesterday"/date breaks. Computed once per messages
838+ // emission (memoized) so a scroll-induced recomposition doesn't re-scan. Lives
839+ // outside the PullToRefreshBox so the auto-scroll effects below can reference
840+ // the same list the LazyColumn renders (separators shift the indices vs. the
841+ // raw messages list, so scroll targets must be in listItems space).
842+ val todayLabel = stringResource(R.string.today)
843+ val yesterdayLabel = stringResource(R.string.yesterday)
844+ // In-conversation search: when active, narrow to messages whose text contains the query.
845+ // Computed on the filtered set so day separators still align with the visible messages.
846+ val searchQuery = chatSearch.trim()
847+ val searchMessages = remember(messages, searchQuery) {
848+ if (searchQuery.isEmpty()) messages
849+ else messages.filter { m ->
850+ m.parts.any { p -> (p as? TextPart)?.text?.contains(searchQuery, ignoreCase = true) == true }
853+ // Keep the focused-match index in range as the query (and thus the match set) changes.
854+ // A new query resets to the first match; a shrunk set clamps to the last valid index.
855+ LaunchedEffect(searchQuery, searchMessages.size) {
856+ if (searchPos >= searchMessages.size) searchPos = 0
858+ val listItems = remember(searchMessages, todayLabel, yesterdayLabel) {
859+ buildMessageListItems(searchMessages, todayLabel, yesterdayLabel)
861+ // listItems is a plain (non-snapshot) local, rebuilt each recomposition. The
862+ // derivedStateOf and snapshotFlow lambdas below are created once (keyless
863+ // remember / LaunchedEffect(Unit)); reading `listItems` directly inside them
864+ // would capture the first composition's list — which is empty, since `messages`
865+ // starts empty — freezing it forever. That pinned isPinnedToBottom at true and
866+ // AutoScrollSignal.size at 0, breaking streaming auto-scroll and the
867+ // jump-to-latest FAB. rememberUpdatedState hands those lambdas a stable State
868+ // whose value tracks the latest list.
869+ val currentListItems by rememberUpdatedState(listItems)
871+ // New-content signal for the jump-to-latest FAB: counts how many new items arrived
872+ // while the user was scrolled away from the bottom, cleared once they return. A count
873+ // (vs. a bare dot) tells the user how much they missed at a glance.
874+ var newContentCount by remember { mutableIntStateOf(0) }
876+ val isPinnedToBottom by remember {
878+ val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
879+ // When a run is active, the LazyColumn has one trailing "__typing"
880+ // item after the last list item. Account for it so "pinned to bottom"
881+ // includes the working indicator — otherwise the pin check targets
882+ // listItems.lastIndex, the typing row sits just below the viewport,
883+ // and the user never sees the progress indicator even when pinned.
884+ val items = currentListItems
885+ val effectiveLast = if (running) items.size else items.lastIndex
886+ lastVisible >= effectiveLast || items.isEmpty()
890+ // Jump to the newest message once, when the conversation first loads. Guarded by a
891+ // saveable one-shot flag so it doesn't re-fire on recomposition after a config change
892+ // (rotation) — rememberLazyListState restores the user's scroll offset, and an
893+ // unconditional scrollToItem here would clobber it, snapping them back to the bottom.
894+ var didInitialScroll by rememberSaveable { mutableStateOf(false) }
895+ LaunchedEffect(listItems.isNotEmpty()) {
896+ if (listItems.isNotEmpty() && !didInitialScroll) {
897+ // When a run is active the LazyColumn has a trailing "__typing" row at
898+ // listItems.size; target it (not listItems.lastIndex) so deep-linking into a
899+ // running session lands truly pinned to bottom and streaming auto-scroll engages.
900+ listState.scrollToItem(if (running) listItems.size else listItems.lastIndex)
901+ didInitialScroll = true
905+ // When a run starts, the LazyColumn gains a trailing "__typing" row, so
906+ // effectiveLast jumps from listItems.lastIndex to listItems.size and the
907+ // isPinnedToBottom check flips to false the instant you send — freezing
908+ // auto-scroll. If the user was pinned to the last item just before the run
909+ // began, bring the typing row into view so the pin (and streaming follow) is
910+ // preserved. Guard on the raw last-visible index (isPinnedToBottom has already
911+ // recomputed to false by now) so we don't scroll when the user had scrolled up.
912+ LaunchedEffect(running) {
913+ if (running && listItems.isNotEmpty()) {
914+ val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
915+ if (lastVisible >= listItems.lastIndex) {
916+ runCatchingCancellable { listState.animateScrollToItem(listItems.size) }
921+ // Scroll the focused search match into view whenever the user steps through results with
922+ // the up/down arrows. Resolves the filtered message to its slot in listItems (which
923+ // includes date separators) and animates there.
924+ LaunchedEffect(searchPos, searchQuery, listItems) {
925+ if (!searchActive || searchQuery.isEmpty()) return@LaunchedEffect
926+ val target = searchMessages.getOrNull(searchPos) ?: return@LaunchedEffect
927+ val index = listItems.indexOfFirst {
928+ it is MessageListItem.Message && it.message.info.id == target.info.id
930+ if (index >= 0) runCatchingCancellable { listState.animateScrollToItem(index) }
933+ LaunchedEffect(Unit) {
937+ // Track list size + the streaming length of the last part so we auto-scroll
938+ // as content arrives, plus the pinned flag. A small data class with primitive
939+ // fields avoids the per-frame boxing that Triple<Int,Int,Boolean> pays
940+ // (snapshotFlow re-evaluates this lambda every snapshot), and reading only the
941+ // last part's length is O(1) vs. a sumOf over every part. Covering reasoning
942+ // and tool output — not just TextPart — keeps a pinned view following a long
943+ // reasoning/tool block while it streams (previously it stalled at 0).
944+ val lastLen = streamingContentLength(messages.lastOrNull()?.parts?.lastOrNull())
945+ AutoScrollSignal(currentListItems.size, lastLen, isPinnedToBottom)
946+ }.collect { signal ->
947+ if (signal.pinned) {
948+ // Back at the bottom: clear the new-content badge.
950+ if (signal.size > 0) {
951+ // Scroll to the effective last index, including the trailing
952+ // "__typing" row when a run is active so the working indicator
953+ // is brought into view (not just the last message).
954+ val items = currentListItems
955+ val target = if (running) items.size else items.lastIndex
956+ listState.scrollToItem(target)
958+ } else if (signal.size > prevSize || signal.lastTextLength > prevLen) {
959+ // Content arrived while scrolled up — increment the jump-to-latest badge.
960+ // Only count whole new items (not per-token growth) so the number reflects
961+ // new messages, not a token count.
962+ if (signal.size > prevSize) newContentCount += signal.size - prevSize
963+ else if (newContentCount == 0) newContentCount = 1
965+ prevSize = signal.size
966+ prevLen = signal.lastTextLength
970+ CompositionLocalProvider(LocalRelativeTimeTick provides timeTick) {
971+ // The bottomBar (ChatInputBar) already has imePadding, and the Scaffold's
972+ // content padding accounts for the bottomBar's raised height, so the message
973+ // list is already above the keyboard. Adding imePadding here would double-apply
974+ // the IME inset and push messages too far up.
975+ Box(modifier = Modifier.fillMaxSize().padding(padding)) {
976+ if (activeConnection == null) {
978+ modifier = Modifier.align(Alignment.Center).padding(24.dp),
979+ horizontalAlignment = Alignment.CenterHorizontally,
982+ stringResource(R.string.not_connected),
983+ color = MaterialTheme.colorScheme.error,
985+ Spacer(Modifier.size(12.dp))
986+ Button(onClick = { vm.reconnect() }, enabled = !reconnecting) {
988+ CircularProgressIndicator(
989+ Modifier.size(20.dp),
990+ color = MaterialTheme.colorScheme.onPrimary,
994+ Text(stringResource(R.string.reconnect))
999+ val bannerVisible = !isOnline || connectionState != EventStreamClient.ConnectionState.Connected
1000+ // Measure the banner's actual height instead of hardcoding 44dp. At large
1001+ // accessibility font scales the banner's labelMedium text + spinner + Retry
1002+ // button exceed 44dp, so a fixed inset lets the first message hide behind it
1003+ // (the same hazard FileViewScreen's overlay calls out). onSizeChanged only
1004+ // fires while the banner is composed (visible), so gate the inset on
1005+ // bannerVisible and fall back to 44dp until the first measurement arrives.
1006+ var bannerHeightPx by remember { mutableIntStateOf(0) }
1007+ val density = LocalDensity.current
1008+ val topPad = if (bannerVisible) {
1009+ if (bannerHeightPx > 0) {
1010+ with(density) { bannerHeightPx.toDp() } + 4.dp
1018+ state = connectionState,
1019+ modifier = Modifier.align(Alignment.TopCenter).onSizeChanged { bannerHeightPx = it.height },
1020+ isOnline = isOnline,
1021+ // On a hard failure, retry by forcing an SSE reconnect (which
1022+ // re-seeds from REST). refreshMessages is the right recovery path
1023+ // when the connection is present but the stream died; reconnect()
1024+ // is the path when the whole connection is gone (handled by the
1025+ // separate "Not connected" state below).
1026+ onRetry = { vm.refreshMessages() },
1028+ // Pull-to-refresh wraps ALL content states (loading, error, empty, list) so
1029+ // recovery is a swipe away everywhere — not just when the message list is
1030+ // populated. Previously PTR was only around the populated list, leaving the
1031+ // error/loading states reachable only via a button tap.
1033+ isRefreshing = refreshing,
1034+ onRefresh = { vm.refreshMessages() },
1035+ // Cap width and center on large screens for readability — full-width
1036+ // bubbles stretch edge-to-edge on tablets, hurting line-length comfort.
1037+ modifier = Modifier.fillMaxSize().wrapContentWidth(Alignment.CenterHorizontally)
1038+ .widthIn(max = NetworkConfig.chatContentMaxWidthDp.dp),
1040+ // Reserve top space when the banner is visible so it doesn't overlap the
1041+ // first message / state content. (topPad computed above.)
1042+ if (loading && messages.isEmpty()) {
1043+ val loadingLabel = stringResource(R.string.loading)
1044+ // Skeleton bubbles pre-structure the layout so the perceived load is faster
1045+ // than a bare centered spinner and the first real messages pop into an
1046+ // already-shaped list instead of a blank-then-pop. Alpha pulses (gated by
1047+ // reduced-motion) to convey ongoing work; the column carries the a11y label.
1048+ val reducedMotion = LocalReducedMotion.current
1049+ val transition = rememberInfiniteTransition(label = "skeleton")
1050+ val pulse by transition.animateFloat(
1051+ initialValue = 0.35f,
1052+ targetValue = 0.7f,
1053+ animationSpec = infiniteRepeatable(tween(900), RepeatMode.Reverse),
1054+ label = "skeletonAlpha",
1056+ val skeletonAlpha = if (reducedMotion) 0.5f else pulse
1057+ val skeletonColor = MaterialTheme.colorScheme.surfaceVariant
1059+ fun bar(widthFraction: Float) {
1062+ .fillMaxWidth(widthFraction)
1064+ .clip(RoundedCornerShape(4.dp))
1065+ .background(skeletonColor)
1066+ .alpha(skeletonAlpha),
1070+ modifier = Modifier
1071+ .align(Alignment.TopCenter)
1072+ .padding(top = topPad)
1075+ .semantics { contentDescription = loadingLabel },
1076+ verticalArrangement = Arrangement.spacedBy(14.dp),
1079+ val left = i % 2 == 0
1081+ modifier = Modifier.fillMaxWidth(),
1082+ horizontalArrangement = if (left) Arrangement.Start else Arrangement.End,
1085+ modifier = Modifier.fillMaxWidth(if (left) 0.7f else 0.55f),
1086+ verticalArrangement = Arrangement.spacedBy(6.dp),
1094+ } else if (loadError && messages.isEmpty()) {
1095+ // A failed load with nothing to show. Distinct from the empty
1096+ // conversation state below — the conversation isn't empty, it
1097+ // failed to load, and offering "Start a conversation" here is
1098+ // misleading. Offer a Retry instead, mirroring SessionListScreen.
1100+ modifier = Modifier.align(Alignment.Center).padding(top = topPad).padding(24.dp),
1101+ horizontalAlignment = Alignment.CenterHorizontally,
1104+ stringResource(R.string.load_messages_failed),
1105+ color = MaterialTheme.colorScheme.error,
1107+ Spacer(Modifier.size(12.dp))
1108+ Button(onClick = { vm.refreshMessages() }) {
1109+ Text(stringResource(R.string.retry))
1112+ } else if (messages.isEmpty() && running) {
1113+ // A run just started but no parts have arrived yet — the empty
1114+ // list with only the trailing "working…" row looks broken, so
1115+ // surface a clear starting state until the first part streams in.
1116+ val workingText = stringResource(R.string.working)
1118+ modifier = Modifier.align(Alignment.Center).padding(top = topPad).padding(24.dp),
1119+ horizontalAlignment = Alignment.CenterHorizontally,
1121+ CircularProgressIndicator(Modifier.size(28.dp), strokeWidth = 3.dp)
1122+ Spacer(Modifier.size(12.dp))
1123+ Text(workingText, style = MaterialTheme.typography.bodyMedium, color = MaterialTheme.colorScheme.onSurfaceVariant)
1125+ } else if (messages.isEmpty()) {
1129+ // Focus the input so the user can edit the suggestion before
1130+ // sending, instead of having to manually tap the field.
1131+ runCatching { inputFocusRequester.requestFocus() }
1133+ modifier = Modifier.align(Alignment.Center).padding(top = topPad),
1136+ val lastMessageId = messages.lastOrNull()?.info?.id
1137+ // Text-to-speech for reading assistant replies aloud; shuts down when the
1138+ // message list leaves composition.
1139+ val tts = rememberTtsController()
1140+ val speakingMessageId by tts.speakingId
1141+ val ttsState by tts.state
1142+ // Provide the in-conversation search query to the markdown renderer so matching
1143+ // text spans are highlighted in-place (in addition to the focused-row highlight
1144+ // above). Scoped to the list so cleared search stops highlighting immediately.
1145+ val activeSearchQuery = searchQuery.takeIf { searchActive && it.isNotEmpty() }
1146+ CompositionLocalProvider(LocalSearchHighlight provides activeSearchQuery) {
1149+ modifier = Modifier.fillMaxSize(),
1150+ // Extra bottom padding reserves room for the jump-to-latest FAB so it
1151+ // never floats over the last message. Top padding grows when the
1152+ // connection banner is visible so it doesn't overlap the first message.
1153+ contentPadding = PaddingValues(
1157+ bottom = 16.dp + NetworkConfig.chatListFabInsetDp.dp,
1159+ verticalArrangement = Arrangement.spacedBy(16.dp),
1164+ contentType = { it.contentType },
1166+ // When in-conversation search is stepping through matches, highlight the
1167+ // focused one's row so the user can spot it at a glance among the filtered
1168+ // results (full in-text term highlighting would require threading the query
1169+ // through the markdown renderer; the row highlight + scroll-to-match covers
1170+ // the navigation use case desktop chat apps solve with next/prev).
1171+ val focusedMatchId = if (searchActive && searchQuery.isNotEmpty()) {
1172+ searchMessages.getOrNull(searchPos)?.info?.id
1174+ val isFocusedMatch = focusedMatchId != null &&
1175+ item is MessageListItem.Message &&
1176+ item.message.info.id == focusedMatchId
1177+ // Default placement animation so inserted/moved rows glide in. Skipped
1178+ // entirely under reduced motion so a streaming message growing in place
1179+ // doesn't animate on every token (and respects the a11y preference).
1182+ .then(reducedMotionAnimateItem())
1184+ if (isFocusedMatch) {
1185+ Modifier.background(
1186+ MaterialTheme.colorScheme.secondaryContainer,
1187+ MaterialTheme.shapes.medium,
1195+ is MessageListItem.Separator -> DateSeparator(item.label)
1196+ is MessageListItem.Message -> {
1197+ val message = item.message
1198+ // Only the last (streaming) message needs isRunning — it drives the
1199+ // reasoning-block spinner. Passing the live flag to every bubble
1200+ // makes all visible messages recompose whenever a run starts or stops.
1201+ val modelLabel = remember(message.info, models) {
1202+ (message.info as? soy.iko.opencode.data.model.AssistantMessage)
1203+ ?.let { resolveModelLabel(it, models) }
1205+ // Text used to drive swipe-to-reply (and pre-fill the quote). Empty for
1206+ // image/code-only messages, which then opt out of the swipe gesture.
1207+ val quoteText = remember(message.parts) {
1209+ .filterIsInstance<TextPart>()
1210+ .joinToString("\n\n") { it.text }
1212+ .takeIf { it.isNotEmpty() }
1214+ // Swipe-start-to-end reveals a reply affordance and triggers quote-reply,
1215+ // snapping back (the message isn't dismissed — the quote fills the composer).
1216+ // Only enabled when there's text to quote, so non-text messages don't
1217+ // capture horizontal drags (e.g. inside a horizontally-scrollable code block).
1218+ val swipeState = rememberSwipeToDismissBoxState(
1219+ confirmValueChange = { value ->
1220+ if (value == SwipeToDismissBoxValue.StartToEnd && quoteText != null) {
1221+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1222+ vm.quoteReply(quoteText)
1223+ runCatching { inputFocusRequester.requestFocus() }
1229+ state = swipeState,
1230+ enableDismissFromEndToStart = false,
1231+ enableDismissFromStartToEnd = quoteText != null,
1232+ backgroundContent = {
1234+ Modifier.fillMaxSize().padding(horizontal = 16.dp),
1235+ contentAlignment = Alignment.CenterStart,
1238+ Icons.AutoMirrored.Filled.Reply,
1239+ contentDescription = null,
1240+ tint = MaterialTheme.colorScheme.onSurfaceVariant,
1247+ isRunning = running && message.info.id == lastMessageId,
1248+ imageContext = imageContext,
1249+ modelLabel = modelLabel,
1250+ onOpenFile = onOpenFile,
1251+ onRevert = { vm.revertTo(message.info.id) },
1253+ // editMessage reverts to before this message (hiding it and
1254+ // everything after); the revert banner surfaces the rewind
1255+ // with an Undo. Focus + scroll the composer into view like the
1256+ // Quote action so the prefilled draft isn't off-screen.
1257+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1258+ vm.editMessage(message.info.id, text)
1259+ runCatching { inputFocusRequester.requestFocus() }
1260+ contentScope.launch {
1261+ runCatchingCancellable {
1262+ listState.animateScrollToItem(listItems.lastIndex.coerceAtLeast(0))
1266+ onSpeak = { text ->
1267+ if (!tts.toggle(message.info.id, text)) {
1268+ // TTS engine unavailable (init failed / not yet ready
1269+ // / blank text): surface feedback so the button doesn't
1270+ // appear dead. Throttled so a rapid double-tap (stop
1271+ // then immediate re-tap before ready) doesn't spam.
1272+ scope.launch { snackbar.showSnackbar(ttsUnavailableMsg) }
1275+ isSpeaking = message.info.id == speakingMessageId,
1276+ ttsState = if (message.info.id == speakingMessageId) ttsState else TtsState.IDLE,
1277+ onPause = { tts.pause() },
1278+ onResume = { tts.resume() },
1279+ onQuote = { text ->
1280+ vm.quoteReply(text)
1281+ runCatching { inputFocusRequester.requestFocus() }
1283+ onBranch = { text -> vm.branchFrom(text) },
1284+ // Regenerate is only meaningful for a finished assistant reply
1285+ // (not the actively-streaming one), so gate it on !running.
1286+ onRegenerate = if (!running) {
1287+ { vm.regenerate(message.info.id) }
1289+ sendStatus = optimisticStatuses[message.info.id]?.let { failed ->
1290+ if (failed) soy.iko.opencode.ui.chat.MessageSendStatus.FAILED
1291+ else soy.iko.opencode.ui.chat.MessageSendStatus.SENDING
1293+ isEdited = message.info.time?.let { it.updated != null && it.updated != it.created } == true,
1294+ onRetry = optimisticStatuses[message.info.id]?.let { failed ->
1296+ { vm.retryOptimisticMessage(message.info.id) }
1301+ onDismiss = optimisticStatuses[message.info.id]?.let { failed ->
1303+ { vm.dismissOptimistic(message.info.id) }
1309+ // Per-message share: build a single-message Markdown
1310+ // transcript off-thread and fire ACTION_SEND, mirroring the
1311+ // whole-conversation share but scoped to just this message.
1313+ val md = withContext(Dispatchers.Default) {
1314+ buildMessageMarkdown(message)
1316+ val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
1317+ type = "text/markdown"
1318+ putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
1319+ putExtra(android.content.Intent.EXTRA_TEXT, md)
1321+ runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareContext.getString(R.string.share_message))) }
1322+ .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
1332+ item(key = "__typing") {
1333+ val workingText = stringResource(R.string.working)
1334+ // Elapsed-since-run chip driven by the VM's runStartMs so the timer
1335+ // survives LazyColumn recycling — a local remember reset to 0:00 when
1336+ // the row was disposed and scrolled back into view. The VM stamps the
1337+ // start on the real false→true transition (send/run/init), not on
1338+ // SSE-reconnect relight, so reconnects don't restart the clock. Updates
1339+ // once per second; the value is decorative (the a11y label is the row's).
1340+ val startMs by vm.runStartMs.collectAsStateWithLifecycle()
1341+ val elapsedMs by produceState(0L, startMs) {
1342+ if (startMs == 0L) return@produceState
1344+ value = (System.currentTimeMillis() - startMs).coerceAtLeast(0L)
1348+ val elapsedText = remember(elapsedMs) {
1349+ val total = elapsedMs / 1000
1350+ // Locale.US for stable digit formatting: on locales with
1351+ // non-ASCII digits (ar-/fa-) the default locale would render
1352+ // localized digits inside the Monospace block, breaking the
1353+ // fixed-width alignment the monospace family was chosen for.
1354+ String.format(java.util.Locale.US, "%d:%02d", total / 60, total % 60)
1357+ verticalAlignment = Alignment.CenterVertically,
1358+ // Animate this slot in/out so the working row doesn't pop in and
1359+ // jolt the message list when a run starts/stops — matching the
1360+ // AnimatedVisibility used by every other transient banner/FAB here.
1361+ modifier = Modifier
1362+ .then(reducedMotionAnimateItem())
1363+ .padding(vertical = 4.dp),
1365+ // Merge the indicator + label + clock into one TalkBack node so
1366+ // it's announced once (the working label, then the elapsed time)
1367+ // instead of "working… / working… / 0:14" with the label read
1368+ // twice. The Stop IconButton below stays separately focusable.
1370+ verticalAlignment = Alignment.CenterVertically,
1371+ modifier = Modifier.semantics(mergeDescendants = true) {
1372+ contentDescription = "$workingText $elapsedText"
1375+ CircularProgressIndicator(Modifier.size(16.dp), strokeWidth = 2.dp)
1376+ Text(workingText, style = MaterialTheme.typography.labelMedium, modifier = Modifier.padding(start = 6.dp))
1377+ Spacer(Modifier.size(8.dp))
1379+ Icons.Filled.Schedule,
1380+ contentDescription = null,
1381+ modifier = Modifier.size(14.dp),
1382+ tint = MaterialTheme.colorScheme.onSurfaceVariant,
1386+ style = MaterialTheme.typography.labelMedium,
1387+ fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
1388+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1389+ modifier = Modifier.padding(start = 4.dp),
1392+ // A trailing Stop on the working row so the run can be aborted
1393+ // without scrolling back to the composer (which may be off-screen
1394+ // while the user reads the streaming output up-thread).
1395+ Spacer(Modifier.weight(1f))
1396+ val stopLabel = stringResource(R.string.stop)
1398+ onClick = { showStopConfirm = true },
1399+ modifier = Modifier.semantics { contentDescription = stopLabel },
1401+ Icon(Icons.Filled.Stop, contentDescription = null)
1410+ // Jump-to-latest affordance when the user has scrolled away during a stream.
1411+ val fabMotion = rememberVisibilityTransitions()
1412+ AnimatedVisibility(
1413+ visible = !isPinnedToBottom && listItems.isNotEmpty(),
1414+ enter = fabMotion.enter,
1415+ exit = fabMotion.exit,
1416+ modifier = Modifier.align(Alignment.BottomEnd),
1418+ // Badge the FAB when new content arrived while the user was scrolled up, so
1419+ // they know there's something new to jump to (cleared once back at bottom).
1422+ if (newContentCount > 0) {
1423+ val newContentLabel = stringResource(R.string.new_messages)
1424+ Badge(modifier = Modifier.semantics { contentDescription = newContentLabel }) {
1425+ Text(if (newContentCount > 99) "99+" else newContentCount.toString())
1429+ modifier = Modifier.padding(end = 16.dp, bottom = 16.dp),
1431+ ExtendedFloatingActionButton(
1433+ newContentCount = 0
1434+ if (listItems.isNotEmpty()) {
1435+ // Scroll to the effective last index, including the
1436+ // trailing "__typing" row when a run is active.
1437+ val target = if (running) listItems.size else listItems.lastIndex
1438+ contentScope.launch { runCatchingCancellable { listState.animateScrollToItem(target) } }
1441+ // contentDescription null: the visible "Latest" text already labels
1442+ // the FAB, so a description here makes TalkBack announce "Latest" twice.
1443+ icon = { Icon(Icons.Filled.KeyboardArrowDown, contentDescription = null) },
1444+ text = { Text(stringResource(R.string.latest)) },
1448+ // Scroll-to-top affordance: a small FAB at the start edge, visible when the
1449+ // user has scrolled down past the first few messages. Symmetric to the
1450+ // jump-to-latest FAB, for long conversations where manual fling back is tedious.
1451+ val scrolledDown by remember {
1452+ derivedStateOf { listState.firstVisibleItemIndex > 0 || listState.firstVisibleItemScrollOffset > 200 }
1454+ AnimatedVisibility(
1455+ visible = scrolledDown && listItems.size > 4,
1456+ enter = fabMotion.enter,
1457+ exit = fabMotion.exit,
1458+ modifier = Modifier.align(Alignment.BottomStart),
1460+ SmallFloatingActionButton(
1462+ contentScope.launch { runCatchingCancellable { listState.animateScrollToItem(0) } }
1464+ modifier = Modifier.padding(start = 16.dp, bottom = 16.dp),
1467+ Icons.Filled.KeyboardArrowUp,
1468+ contentDescription = stringResource(R.string.scroll_to_top),
1472+ // In-conversation search bar. Overlays the list so typing filters messages in
1473+ // place; the match count + a no-matches note give immediate feedback.
1474+ val searchMotion = rememberVisibilityTransitions()
1475+ AnimatedVisibility(
1476+ visible = searchActive,
1477+ enter = searchMotion.enter,
1478+ exit = searchMotion.exit,
1479+ modifier = Modifier.align(Alignment.TopCenter),
1482+ tonalElevation = 3.dp,
1483+ modifier = Modifier
1484+ .padding(horizontal = 12.dp, vertical = 4.dp)
1487+ // Focus the search field when the bar appears (from the overflow menu's
1488+ // "Find in conversation" or Ctrl+F), so the user can start typing
1489+ // immediately. Runs after the search field enters the composition.
1490+ LaunchedEffect(searchActive) {
1491+ if (searchActive) runCatching { searchFocusRequester.requestFocus() }
1494+ modifier = Modifier.padding(start = 8.dp, end = 4.dp),
1495+ verticalAlignment = Alignment.CenterVertically,
1498+ value = chatSearch,
1499+ onValueChange = { chatSearch = it },
1500+ modifier = Modifier.weight(1f).focusRequester(searchFocusRequester),
1501+ placeholder = { Text(stringResource(R.string.search_in_conversation)) },
1503+ leadingIcon = { Icon(Icons.Filled.Search, contentDescription = null) },
1504+ keyboardOptions = KeyboardOptions(imeAction = ImeAction.Search),
1506+ // Match counter: "N of M" where N is the focused match (1-based) and
1507+ // M is the total matching messages. Only shown when there's a query.
1508+ val matchCount = searchMessages.size
1510+ if (searchQuery.isNotEmpty() && matchCount > 0) {
1511+ stringResource(R.string.search_match_count, searchPos + 1, matchCount)
1512+ } else if (searchQuery.isNotEmpty()) {
1513+ stringResource(R.string.search_no_matches)
1515+ style = MaterialTheme.typography.labelSmall,
1516+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1517+ modifier = Modifier.padding(horizontal = 4.dp),
1519+ // Step through matches (Previous / Next), disabled when there are
1520+ // fewer than two to navigate. Wrap around at the ends so repeated
1521+ // taps cycle through every hit.
1522+ val prevLabel = stringResource(R.string.find_previous)
1523+ val nextLabel = stringResource(R.string.find_next)
1526+ if (matchCount > 0) {
1527+ searchPos = (searchPos - 1 + matchCount) % matchCount
1530+ enabled = matchCount > 1,
1532+ Icon(Icons.Filled.KeyboardArrowUp, contentDescription = prevLabel)
1536+ if (matchCount > 0) {
1537+ searchPos = (searchPos + 1) % matchCount
1540+ enabled = matchCount > 1,
1542+ Icon(Icons.Filled.KeyboardArrowDown, contentDescription = nextLabel)
1544+ IconButton(onClick = {
1545+ searchActive = false
1548+ Icon(Icons.Filled.Close, contentDescription = stringResource(R.string.clear_search))
1553+ // When a search yields no matches (but the conversation isn't empty), say so
1554+ // instead of showing a blank list.
1555+ if (searchActive && searchQuery.isNotEmpty() && searchMessages.isEmpty() && messages.isNotEmpty()) {
1557+ stringResource(R.string.search_no_matches),
1558+ style = MaterialTheme.typography.bodyMedium,
1559+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1560+ modifier = Modifier.align(Alignment.Center),
1568+ if (showExitConfirm) {
1570+ onDismissRequest = { showExitConfirm = false },
1571+ title = { Text(stringResource(R.string.stop_and_exit_title)) },
1572+ text = { Text(stringResource(R.string.stop_and_exit_text)) },
1574+ TextButton(onClick = {
1575+ showExitConfirm = false
1576+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1579+ }) { Text(stringResource(R.string.stop_and_exit)) }
1582+ TextButton(onClick = { showExitConfirm = false }) { Text(stringResource(R.string.stay)) }
1587+ if (showStopConfirm) {
1589+ onDismissRequest = { showStopConfirm = false },
1590+ title = { Text(stringResource(R.string.stop_run_title)) },
1591+ text = { Text(stringResource(R.string.stop_run_text)) },
1593+ TextButton(onClick = {
1594+ showStopConfirm = false
1595+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1597+ }) { Text(stringResource(R.string.stop), color = MaterialTheme.colorScheme.error) }
1600+ TextButton(onClick = { showStopConfirm = false }) { Text(stringResource(R.string.cancel)) }
1605+ if (showSummarizeConfirm) {
1607+ onDismissRequest = { showSummarizeConfirm = false },
1608+ title = { Text(stringResource(R.string.summarize_confirm_title)) },
1609+ text = { Text(stringResource(R.string.summarize_confirm_text)) },
1611+ TextButton(onClick = {
1612+ showSummarizeConfirm = false
1614+ }) { Text(stringResource(R.string.action_continue)) }
1617+ TextButton(onClick = { showSummarizeConfirm = false }) { Text(stringResource(R.string.cancel)) }
1622+ if (showInitConfirm) {
1624+ onDismissRequest = { showInitConfirm = false },
1625+ title = { Text(stringResource(R.string.init_confirm_title)) },
1626+ text = { Text(stringResource(R.string.init_confirm_text)) },
1628+ TextButton(onClick = {
1629+ showInitConfirm = false
1631+ }) { Text(stringResource(R.string.action_continue)) }
1634+ TextButton(onClick = { showInitConfirm = false }) { Text(stringResource(R.string.cancel)) }
1639+ if (showRenameDialog) {
1640+ RenameSessionChatDialog(
1641+ initialTitle = sessionTitle ?: "",
1642+ onDismiss = { showRenameDialog = false },
1643+ onConfirm = { newName ->
1644+ showRenameDialog = false
1645+ vm.renameSession(newName)
1650+ if (showDeleteDialog) {
1652+ onDismissRequest = { showDeleteDialog = false },
1653+ title = { Text(stringResource(R.string.delete_session_chat_title)) },
1654+ text = { Text(stringResource(R.string.delete_session_chat_text, sessionTitle ?: sessionLabel)) },
1656+ TextButton(onClick = {
1657+ showDeleteDialog = false
1658+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
1660+ }) { Text(stringResource(R.string.delete), color = MaterialTheme.colorScheme.error) }
1663+ TextButton(onClick = { showDeleteDialog = false }) { Text(stringResource(R.string.cancel)) }
1668+ if (showShellDialog) {
1669+ ShellCommandDialog(
1670+ onDismiss = { showShellDialog = false },
1672+ showShellDialog = false
1678+ if (showModelPicker) {
1681+ selected = selectedModel,
1682+ loading = modelsLoading,
1683+ error = modelsError,
1684+ onSelect = { vm.selectModel(it) },
1685+ onRetry = { vm.reloadModels() },
1686+ onDismiss = { showModelPicker = false },
1690+ if (showAgentPicker) {
1693+ selected = selectedAgent,
1694+ loading = agentsLoading,
1695+ error = agentsError,
1696+ onSelect = { vm.selectAgent(it?.name) },
1697+ onRetry = { vm.reloadAgents() },
1698+ onDismiss = { showAgentPicker = false },
1702+ if (showCommandPicker) {
1703+ CommandPickerSheet(
1704+ commands = commands,
1705+ loading = commandsLoading,
1706+ error = commandsError,
1707+ onSelect = { vm.runCommand(it) },
1708+ onRetry = { vm.reloadCommands() },
1709+ onDismiss = { showCommandPicker = false },
1713+ pendingPermission?.let { permission ->
1715+ permission = permission,
1716+ position = permissionProgress.position,
1717+ total = permissionProgress.total,
1718+ onRespond = { response -> vm.respondPermission(permission, response) },
1723+ CommandPalette(actions = paletteActions, onDismiss = { showPalette = false })
1726+ if (showShortcutsDialog) {
1727+ // Surfaces the hardware-keyboard shortcuts (Ctrl+K palette, Escape stop, Enter send)
1728+ // that are otherwise wired but undiscoverable. A simple key/value list; Enter behavior
1729+ // depends on the "Send on Enter" setting, noted inline.
1731+ onDismissRequest = { showShortcutsDialog = false },
1732+ title = { Text(stringResource(R.string.keyboard_shortcuts_title)) },
1734+ Column(verticalArrangement = Arrangement.spacedBy(10.dp)) {
1735+ ShortcutRow("Ctrl + K", stringResource(R.string.shortcut_open_palette))
1736+ ShortcutRow("Esc", stringResource(R.string.shortcut_stop_run))
1737+ ShortcutRow("Esc", stringResource(R.string.shortcut_close))
1738+ ShortcutRow("Enter", stringResource(R.string.shortcut_send))
1739+ ShortcutRow("Shift + Enter / Ctrl + Enter", stringResource(R.string.shortcut_newline))
1743+ TextButton(onClick = { showShortcutsDialog = false }) { Text(stringResource(R.string.action_continue)) }
1750+private fun ShortcutRow(keys: String, desc: String) {
1751+ Row(verticalAlignment = Alignment.CenterVertically) {
1754+ style = MaterialTheme.typography.labelLarge,
1755+ fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
1756+ modifier = Modifier.widthIn(min = 160.dp),
1760+ style = MaterialTheme.typography.bodyMedium,
1761+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1766+@OptIn(androidx.compose.foundation.ExperimentalFoundationApi::class)
1768+private fun ChatInputBar(
1770+ onValueChange: (String) -> Unit,
1774+ sendOnEnter: Boolean,
1775+ onSend: () -> Unit,
1776+ onAbort: () -> Unit,
1777+ queuedFollowUp: String?,
1778+ onQueueFollowUp: (String) -> Unit,
1779+ onCancelQueue: () -> Unit,
1780+ focusRequester: androidx.compose.ui.focus.FocusRequester,
1781+ attachments: List<PendingAttachment>,
1783+ onRemoveAttachment: (String) -> Unit,
1784+ onPickPhoto: () -> Unit,
1785+ onPickFile: () -> Unit,
1786+ onCamera: () -> Unit,
1787+ onVoice: () -> Unit,
1788+ onPasteImage: (List<Uri>) -> Unit,
1790+ // Sendable when there's text OR at least one attachment (an image-only prompt is valid).
1791+ val hasContent = value.isNotBlank() || attachments.isNotEmpty()
1792+ // Full-screen editor state: opened when the user wants more space for a long prompt.
1793+ var showFullScreenEditor by rememberSaveable { mutableStateOf(false) }
1794+ Surface(tonalElevation = 3.dp, modifier = Modifier.imePadding()) {
1795+ Column(modifier = Modifier.fillMaxWidth().windowInsetsPadding(WindowInsets.navigationBars)) {
1796+ // A queued follow-up replaces the Stop button with a "queued" chip so the
1797+ // user sees their message will be sent when the run finishes, and can cancel.
1798+ if (queuedFollowUp != null) {
1799+ val editLabel = stringResource(R.string.edit)
1801+ modifier = Modifier
1803+ .padding(start = 12.dp, top = 6.dp, end = 4.dp),
1804+ verticalAlignment = Alignment.CenterVertically,
1806+ // Tapping the chip reloads the queued text into the draft (and clears the
1807+ // queue) so a typo spotted while queuing can be fixed without retyping.
1809+ modifier = Modifier
1811+ .clip(MaterialTheme.shapes.small)
1812+ .clickable(role = Role.Button, onClickLabel = editLabel) {
1813+ onValueChange(queuedFollowUp)
1816+ .padding(vertical = 4.dp),
1819+ stringResource(R.string.queued),
1820+ style = MaterialTheme.typography.labelSmall,
1821+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1825+ style = MaterialTheme.typography.bodySmall,
1826+ color = MaterialTheme.colorScheme.onSurfaceVariant,
1828+ overflow = TextOverflow.Ellipsis,
1831+ TextButton(onClick = onCancelQueue, contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = 8.dp)) {
1832+ Text(stringResource(R.string.cancel))
1836+ // Staged attachments: horizontally-scrollable thumbnails/chips, each removable.
1837+ AttachmentStrip(attachments, onRemove = onRemoveAttachment, staging = staging)
1839+ modifier = Modifier.fillMaxWidth().padding(8.dp),
1840+ verticalAlignment = Alignment.Bottom,
1842+ // Attach menu: photo picker, camera, or any file.
1843+ var showAttachMenu by remember { mutableStateOf(false) }
1845+ IconButton(onClick = { showAttachMenu = true }, enabled = enabled) {
1846+ Icon(Icons.Filled.Add, contentDescription = stringResource(R.string.add_attachment))
1848+ DropdownMenu(expanded = showAttachMenu, onDismissRequest = { showAttachMenu = false }) {
1850+ leadingIcon = { Icon(Icons.Filled.PhotoLibrary, contentDescription = null) },
1851+ text = { Text(stringResource(R.string.attach_photo)) },
1852+ onClick = { showAttachMenu = false; onPickPhoto() },
1855+ leadingIcon = { Icon(Icons.Filled.PhotoCamera, contentDescription = null) },
1856+ text = { Text(stringResource(R.string.attach_camera)) },
1857+ onClick = { showAttachMenu = false; onCamera() },
1860+ leadingIcon = { Icon(Icons.Filled.Description, contentDescription = null) },
1861+ text = { Text(stringResource(R.string.attach_file)) },
1862+ onClick = { showAttachMenu = false; onPickFile() },
1866+ // Voice dictation: appends recognized speech to the draft.
1867+ IconButton(onClick = onVoice, enabled = enabled) {
1868+ Icon(Icons.Filled.Mic, contentDescription = stringResource(R.string.voice_input))
1870+ // Expand to a full-screen editor for long prompts (the inline field caps at 6 lines).
1871+ IconButton(onClick = { showFullScreenEditor = true }, enabled = enabled) {
1872+ Icon(Icons.Filled.Expand, contentDescription = stringResource(R.string.expand_editor))
1876+ onValueChange = { v ->
1877+ // Cap input length so a huge paste can't stall the UI. Shares are
1878+ // capped separately in MainActivity; this guards typed/pasted drafts.
1879+ onValueChange(v.take(NetworkConfig.maxDraftLengthChars))
1881+ modifier = Modifier
1883+ .focusRequester(focusRequester)
1884+ .testTag("chat_input")
1885+ // Intercept image content pasted/dropped into the field (keyboard paste
1886+ // of a copied screenshot, drag from Files, etc.) and route it through the
1887+ // same staging path as the attach menu. Non-image content (text) falls
1888+ // through unchanged so normal typing/paste works.
1891+ androidx.compose.foundation.content.ReceiveContentListener { transferable ->
1892+ val clipData = transferable.clipEntry?.clipData
1893+ if (clipData != null) {
1894+ val imageUris = (0 until clipData.itemCount).mapNotNull { i ->
1895+ val item = clipData.getItemAt(i)
1896+ item.uri?.takeIf { uri ->
1897+ item.text == null && uri.toString().let { s ->
1898+ s.startsWith("content:") || s.startsWith("file:")
1902+ if (imageUris.isNotEmpty()) {
1903+ onPasteImage(imageUris)
1910+ .onPreviewKeyEvent { event ->
1911+ if (event.type != KeyEventType.KeyDown || event.key != Key.Enter) return@onPreviewKeyEvent false
1912+ // With "Send on Enter" on, Enter sends (Shift+Enter newlines).
1913+ // With it off, Enter inserts a newline and Ctrl+Enter sends.
1914+ val send = enterShouldSend(
1916+ hasContent = hasContent,
1917+ sendOnEnter = sendOnEnter,
1918+ shift = event.isShiftPressed,
1919+ ctrl = event.isCtrlPressed,
1922+ if (running) onQueueFollowUp(value) else onSend()
1928+ // While a run is active a typed message only queues (sends after the run), so
1929+ // the placeholder says so instead of the plain "Message…".
1931+ Text(stringResource(if (running) R.string.composer_hint_running else R.string.message_placeholder))
1935+ // Show a "N / max" countdown once the draft crosses a high fraction of
1936+ // the cap, so the user knows a paste is about to be truncated instead
1937+ // of being silently cut off. Hidden for normal short prompts to avoid
1938+ // clutter under a typical one-line message.
1940+ val threshold = (NetworkConfig.maxDraftLengthChars * NetworkConfig.draftCountdownThresholdFraction).toInt()
1941+ if (value.length >= threshold) {
1944+ R.string.draft_chars_remaining,
1945+ NetworkConfig.maxDraftLengthChars - value.length,
1946+ NetworkConfig.maxDraftLengthChars,
1948+ style = MaterialTheme.typography.labelSmall,
1949+ color = if (value.length >= NetworkConfig.maxDraftLengthChars) MaterialTheme.colorScheme.error
1950+ else MaterialTheme.colorScheme.onSurfaceVariant,
1954+ keyboardOptions = KeyboardOptions(
1955+ // When "Send on Enter" is on, expose ImeAction.Send so the soft
1956+ // keyboard shows a send key — matching the setting's intent and
1957+ // giving touch-only users a keyboard send affordance. When off,
1958+ // ImeAction.Default keeps the enter/newline key for multi-line input.
1959+ imeAction = if (sendOnEnter) ImeAction.Send else ImeAction.Default,
1960+ capitalization = KeyboardCapitalization.Sentences,
1962+ keyboardActions = KeyboardActions(
1964+ if (enabled && hasContent) onSend()
1968+ ComposerTrailingButton(
1970+ aborting = aborting,
1971+ canSend = enabled && hasContent,
1972+ canQueue = enabled && value.isNotBlank(),
1975+ onQueue = { onQueueFollowUp(value) },
1979+ if (showFullScreenEditor) {
1982+ onValueChange = onValueChange,
1983+ onDismiss = { showFullScreenEditor = false },
1985+ showFullScreenEditor = false
1986+ // Mirror the inline composer's behavior: while a run is active a send
1987+ // can't go immediately, so queue the follow-up instead of silently
1988+ // dropping it (vm.send() returns false during a run, which previously
1989+ // lost the typed message with no feedback).
1990+ if (running) onQueueFollowUp(value) else onSend()
1992+ canSend = enabled && hasContent,
1994+ sendOnEnter = sendOnEnter,
1995+ attachments = attachments,
1996+ onRemoveAttachment = onRemoveAttachment,
2003+/** Full-screen editor dialog for composing long prompts. Gives the full viewport height to
2004+ * the text field (vs the inline 6-line cap) with a Send button and a collapse action. */
2005+@OptIn(ExperimentalMaterial3Api::class)
2007+private fun FullScreenEditor(
2009+ onValueChange: (String) -> Unit,
2010+ onDismiss: () -> Unit,
2011+ onSend: () -> Unit,
2013+ running: Boolean = false,
2014+ sendOnEnter: Boolean = false,
2015+ attachments: List<PendingAttachment> = emptyList(),
2016+ onRemoveAttachment: (String) -> Unit = {},
2017+ staging: Boolean = false,
2019+ androidx.compose.ui.window.Dialog(
2020+ onDismissRequest = onDismiss,
2021+ properties = androidx.compose.ui.window.DialogProperties(usePlatformDefaultWidth = false, decorFitsSystemWindows = false),
2023+ // Cap the editor width on large screens (tablets) so the text field doesn't stretch
2024+ // edge-to-edge — matching the chat list's readability rationale. BoxWithConstraints
2025+ // gives the available width so we can center a capped-width column.
2026+ androidx.compose.foundation.layout.BoxWithConstraints(
2027+ modifier = Modifier.fillMaxSize(),
2028+ contentAlignment = Alignment.Center,
2030+ val hPad = if (maxWidth > NetworkConfig.twoPaneWidthThresholdDp.dp)
2031+ ((maxWidth - NetworkConfig.composerDialogMaxWidthDp.dp) / 2).coerceAtLeast(0.dp)
2034+ modifier = Modifier.padding(horizontal = hPad),
2036+ androidx.compose.material3.TopAppBar(
2037+ title = { Text(stringResource(R.string.compose_editor_title)) },
2039+ androidx.compose.material3.TextButton(onClick = onDismiss) {
2040+ Text(stringResource(R.string.collapse_editor))
2046+ Surface(tonalElevation = 3.dp) {
2048+ modifier = Modifier.fillMaxWidth().imePadding().padding(12.dp),
2049+ horizontalArrangement = Arrangement.End,
2051+ androidx.compose.material3.Button(onClick = onSend, enabled = canSend) {
2052+ Text(stringResource(if (running) R.string.queue else R.string.send))
2058+ Column(modifier = Modifier.fillMaxSize().padding(padding)) {
2059+ // Show staged attachments in the full-screen editor too, so a user who staged
2060+ // images then expanded for a long prompt can still see and remove them without
2061+ // collapsing first (mirrors the inline composer's AttachmentStrip).
2062+ AttachmentStrip(attachments, onRemove = onRemoveAttachment, staging = staging)
2065+ onValueChange = { v -> onValueChange(v.take(NetworkConfig.maxDraftLengthChars)) },
2066+ modifier = Modifier
2069+ // Honor the "Send on Enter" setting here too, so the full-screen
2070+ // editor matches the inline composer: Enter sends (Shift+Enter
2071+ // newlines) when on; Enter inserts a newline and Ctrl+Enter sends
2072+ // when off. Previously this hard-coded ImeAction.Default and had no
2073+ // key handler, so a hardware-keyboard user got a different behaviour
2074+ // from the inline composer depending on which they happened to open.
2075+ .onPreviewKeyEvent { event ->
2076+ if (event.type != KeyEventType.KeyDown || event.key != Key.Enter) return@onPreviewKeyEvent false
2077+ val send = enterShouldSend(
2079+ hasContent = canSend,
2080+ sendOnEnter = sendOnEnter,
2081+ shift = event.isShiftPressed,
2082+ ctrl = event.isCtrlPressed,
2084+ if (send) { onSend(); true } else false
2086+ placeholder = { Text(stringResource(R.string.message_placeholder)) },
2087+ maxLines = Int.MAX_VALUE,
2088+ keyboardOptions = KeyboardOptions(
2089+ imeAction = if (sendOnEnter) ImeAction.Send else ImeAction.Default,
2090+ capitalization = KeyboardCapitalization.Sentences,
2092+ keyboardActions = KeyboardActions(
2093+ onSend = { if (canSend) onSend() },
2102+/** Whether a hardware Enter keypress should send: never when disabled/empty; otherwise
2103+ * Enter sends (unless Shift) when send-on-Enter is on, else only Ctrl+Enter sends. */
2104+private fun enterShouldSend(
2106+ hasContent: Boolean,
2107+ sendOnEnter: Boolean,
2111+ !enabled || !hasContent -> false
2112+ sendOnEnter -> !shift
2116+/** The composer's trailing button: while a run is active a Stop (with in-flight spinner),
2117+ * preceded by a Queue button when the user has typed a follow-up; otherwise Send. Extracted so
2118+ * [ChatInputBar] stays under the complexity threshold. */
2120+private fun ComposerTrailingButton(
2125+ onSend: () -> Unit,
2126+ onAbort: () -> Unit,
2127+ onQueue: () -> Unit,
2130+ Row(verticalAlignment = Alignment.CenterVertically) {
2131+ // While a run is active the trailing action is Stop, so the only send affordance is
2132+ // the keyboard's IME action — which is a plain newline when "Send on Enter" is off.
2133+ // That leaves a touch-only user with the setting off no way to queue a follow-up
2134+ // (Ctrl+Enter needs a hardware keyboard). Surface an explicit Queue button whenever
2135+ // there's typed TEXT so queuing is always reachable, without changing the user's
2136+ // Enter-inserts-a-newline preference. Gate on typed text — not the send-oriented
2137+ // canSend, which is also true for an attachment-only composer — because queuing "" just
2138+ // calls setQueuedFollowUp(null), silently cancelling any already-queued follow-up and
2139+ // dropping the staged attachment (queued follow-ups don't carry attachments anyway).
2143+ modifier = Modifier.testTag("queue_button"),
2145+ // PlaylistAdd reads as "add to a queue/list" more clearly than a clock
2146+ // icon (which can be read as "snooze" or "later"), and isn't confused with
2147+ // the Send action sitting right beside the Stop button.
2149+ Icons.AutoMirrored.Filled.PlaylistAdd,
2150+ contentDescription = stringResource(R.string.queue_followup),
2154+ // Show a spinner while the abort REST call is in flight so the user sees the stop
2155+ // was sent, and disable to prevent a double-tap.
2158+ enabled = !aborting,
2159+ modifier = Modifier.padding(start = 4.dp).testTag("stop_button"),
2162+ val stopLabel = stringResource(R.string.stop)
2163+ CircularProgressIndicator(
2164+ Modifier.size(18.dp).semantics { contentDescription = stopLabel },
2165+ strokeWidth = 2.dp,
2168+ Icon(Icons.Filled.Stop, contentDescription = stringResource(R.string.stop))
2176+ modifier = Modifier.padding(start = 4.dp).testTag("send_button"),
2178+ Icon(Icons.AutoMirrored.Filled.Send, contentDescription = stringResource(R.string.send))
2183+@OptIn(androidx.compose.foundation.layout.ExperimentalLayoutApi::class)
2185+private fun EmptyConversation(
2186+ onSuggestion: (String) -> Unit,
2187+ modifier: Modifier = Modifier,
2189+ // A few example prompts so a first-time user has a one-tap path to their first
2190+ // message instead of staring at a blank input. Tapping a chip fills the draft
2191+ // (without sending) so the user can edit it before sending.
2192+ val suggestions = remember {
2194+ R.string.empty_chat_suggest_1,
2195+ R.string.empty_chat_suggest_2,
2196+ R.string.empty_chat_suggest_3,
2200+ modifier = modifier.padding(32.dp),
2201+ horizontalAlignment = Alignment.CenterHorizontally,
2204+ Icons.Filled.AutoAwesome,
2205+ contentDescription = null,
2206+ modifier = Modifier.size(48.dp),
2207+ tint = MaterialTheme.colorScheme.onSurfaceVariant,
2209+ Spacer(Modifier.size(16.dp))
2211+ stringResource(R.string.empty_chat_title),
2212+ style = MaterialTheme.typography.titleMedium,
2214+ Spacer(Modifier.size(8.dp))
2216+ stringResource(R.string.empty_chat_hint),
2217+ style = MaterialTheme.typography.bodyMedium,
2218+ color = MaterialTheme.colorScheme.onSurfaceVariant,
2220+ Spacer(Modifier.size(20.dp))
2221+ // Suggestion chips wrap across rows on narrow screens instead of stacking full-width,
2222+ // so a longer localized prompt doesn't push the chips off-screen on a phone.
2224+ modifier = Modifier.fillMaxWidth(),
2225+ horizontalArrangement = Arrangement.spacedBy(8.dp),
2226+ verticalArrangement = Arrangement.spacedBy(8.dp),
2228+ suggestions.forEach { resId ->
2229+ val text = stringResource(resId)
2230+ androidx.compose.material3.AssistChip(
2231+ onClick = { onSuggestion(text) },
2232+ label = { Text(text, style = MaterialTheme.typography.bodyMedium) },
2239+/** A banner shown while a revert checkpoint is active, offering an Undo (unrevert). When the
2240+ * server included a diff of the revert, a collapsible "Show what changed" affordance reveals
2241+ * it inline via [DiffView] so the user can see what was rolled back before deciding to undo. */
2243+private fun RevertBanner(diff: String?, onUndo: () -> Unit) {
2244+ val haptics = LocalHapticFeedback.current
2245+ var showDiff by rememberSaveable { mutableStateOf(false) }
2246+ val expandMotion = rememberVisibilityTransitions()
2248+ color = MaterialTheme.colorScheme.tertiaryContainer,
2249+ tonalElevation = 2.dp,
2250+ modifier = Modifier.fillMaxWidth(),
2254+ modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
2255+ verticalAlignment = Alignment.CenterVertically,
2256+ horizontalArrangement = Arrangement.SpaceBetween,
2258+ Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
2260+ Icons.Filled.Restore,
2261+ contentDescription = null,
2262+ tint = MaterialTheme.colorScheme.onTertiaryContainer,
2263+ modifier = Modifier.size(18.dp),
2266+ stringResource(R.string.reverted_banner),
2267+ style = MaterialTheme.typography.bodySmall,
2268+ color = MaterialTheme.colorScheme.onTertiaryContainer,
2269+ modifier = Modifier.padding(start = 8.dp),
2271+ // "Show what changed" toggle, shown only when the server provided a diff.
2272+ // Collapsible so the banner stays compact by default; a user curious about
2273+ // what the revert rolled back can expand it inline without leaving the chat.
2274+ if (!diff.isNullOrBlank()) {
2277+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2278+ showDiff = !showDiff
2280+ contentPadding = androidx.compose.foundation.layout.PaddingValues(start = 8.dp, end = 4.dp),
2283+ if (showDiff) Icons.Filled.ExpandLess else Icons.Filled.ExpandMore,
2284+ contentDescription = null,
2285+ modifier = Modifier.size(16.dp),
2288+ stringResource(if (showDiff) R.string.revert_hide_diff else R.string.revert_show_diff),
2289+ style = MaterialTheme.typography.labelSmall,
2290+ modifier = Modifier.padding(start = 4.dp),
2295+ TextButton(onClick = {
2296+ // Haptic on undo to match the other destructive/important confirmations: a
2297+ // revert restores potentially hundreds of hidden messages.
2298+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2300+ }) { Text(stringResource(R.string.undo)) }
2302+ // The diff render lives inside the banner's Surface so it inherits the tertiary
2303+ // tonal container and reads as part of the banner, not a floating panel.
2304+ if (!diff.isNullOrBlank()) {
2305+ AnimatedVisibility(
2306+ visible = showDiff,
2307+ enter = expandMotion.enter,
2308+ exit = expandMotion.exit,
2310+ Column(modifier = Modifier.padding(start = 12.dp, end = 12.dp, bottom = 8.dp)) {
2312+ stringResource(R.string.revert_diff_header),
2313+ style = MaterialTheme.typography.labelSmall,
2314+ color = MaterialTheme.colorScheme.onTertiaryContainer,
2315+ modifier = Modifier.padding(bottom = 4.dp),
2317+ DiffView(diff, saveKey = "revertDiff")
2325+/** A banner shown while messages composed offline are queued in the outbox, with a
2326+ * "Send now" nudge and a discard. Shows a spinner while the queue is flushing. */
2328+private fun OutboxBanner(
2331+ onFlush: () -> Unit,
2332+ onDiscard: () -> Unit,
2334+ var showDiscardConfirm by rememberSaveable { mutableStateOf(false) }
2336+ color = MaterialTheme.colorScheme.secondaryContainer,
2337+ tonalElevation = 2.dp,
2338+ modifier = Modifier.fillMaxWidth(),
2341+ modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
2342+ verticalAlignment = Alignment.CenterVertically,
2343+ horizontalArrangement = Arrangement.SpaceBetween,
2345+ Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
2347+ CircularProgressIndicator(
2348+ Modifier.size(16.dp),
2349+ strokeWidth = 2.dp,
2350+ color = MaterialTheme.colorScheme.onSecondaryContainer,
2352+ Spacer(Modifier.size(8.dp))
2356+ stringResource(R.string.outbox_sending)
2358+ val res = if (count == 1) R.string.outbox_pending_one else R.string.outbox_pending_many
2359+ stringResource(res, count)
2361+ style = MaterialTheme.typography.bodySmall,
2362+ color = MaterialTheme.colorScheme.onSecondaryContainer,
2366+ val haptics = LocalHapticFeedback.current
2367+ TextButton(onClick = onFlush) { Text(stringResource(R.string.outbox_flush)) }
2368+ TextButton(onClick = {
2369+ // Confirm before discarding all queued messages (irreversible), matching
2370+ // the confirmation pattern used by deleteSession and other destructive
2371+ // actions. Previously a single tap dropped every queued message.
2372+ haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
2373+ showDiscardConfirm = true
2375+ Text(stringResource(R.string.outbox_discard_all), color = MaterialTheme.colorScheme.error)
2380+ if (showDiscardConfirm) {
2381+ androidx.compose.material3.AlertDialog(
2382+ onDismissRequest = { showDiscardConfirm = false },
2383+ title = { Text(stringResource(R.string.discard_queued_title)) },
2384+ text = { Text(stringResource(R.string.discard_queued_text, count)) },
2386+ androidx.compose.material3.TextButton(onClick = {
2387+ showDiscardConfirm = false
2389+ }) { Text(stringResource(R.string.discard)) }
2392+ androidx.compose.material3.TextButton(onClick = { showDiscardConfirm = false }) {
2393+ Text(stringResource(R.string.cancel))
2400+/** Prompt for a one-off shell command to run in the session's worktree. */
2402+private fun ShellCommandDialog(onDismiss: () -> Unit, onRun: (String) -> Unit) {
2403+ var command by rememberSaveable { mutableStateOf("") }
2405+ onDismissRequest = onDismiss,
2406+ title = { Text(stringResource(R.string.run_shell_command)) },
2410+ onValueChange = { command = it },
2411+ modifier = Modifier.fillMaxWidth(),
2412+ placeholder = { Text(stringResource(R.string.shell_command_hint)) },
2413+ label = { Text(stringResource(R.string.shell_command_label)) },
2415+ keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
2416+ keyboardActions = KeyboardActions(onDone = { if (command.isNotBlank()) onRun(command.trim()) }),
2421+ onClick = { if (command.isNotBlank()) onRun(command.trim()) },
2422+ enabled = command.isNotBlank(),
2423+ ) { Text(stringResource(R.string.run)) }
2425+ dismissButton = { TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) } },
2430+ * Change signal for the auto-scroll-on-stream watcher. Primitive fields avoid the
2431+ * boxing `Triple<Int, Int, Boolean>` would impose on every snapshot evaluation, and
2432+ * equality is structural so `snapshotFlow` emits only when something relevant changes.
2434+private data class AutoScrollSignal(val size: Int, val lastTextLength: Int, val pinned: Boolean)
2436+/** Length of the streaming content carried by [part], driving auto-scroll as it grows.
2437+ * Covers text, reasoning, and tool output so a pinned view keeps following non-text
2438+ * streaming, not just plain assistant text. O(1). */
2439+private fun streamingContentLength(part: Part?): Int = when (part) {
2440+ is TextPart -> part.text.length
2441+ is ReasoningPart -> part.text.length
2442+ is ToolPart -> when (val st = part.state) {
2443+ is ToolCompleted -> st.output?.length ?: 0
2444+ is ToolError -> st.error?.length ?: 0
2445+ is ToolRunning -> st.title?.length ?: 0
2451+/** Rename dialog for the currently-open session. Mirrors the SessionListScreen rename
2452+ * dialog but lives in the chat screen so the user can rename without backing out to
2453+ * the list. Pre-filled with the current title; the cap matches the list dialog. */
2455+private fun RenameSessionChatDialog(
2456+ initialTitle: String,
2457+ onDismiss: () -> Unit,
2458+ onConfirm: (String) -> Unit,
2460+ // Seed the field once (no key input) so a later external title change — e.g. opencode
2461+ // auto-generating a session title after the first prompt, arriving via SessionUpdated —
2462+ // doesn't re-initialize the box and discard the user's in-progress edit.
2463+ var title by rememberSaveable { mutableStateOf(initialTitle) }
2465+ onDismissRequest = onDismiss,
2466+ title = { Text(stringResource(R.string.rename_session_chat)) },
2470+ onValueChange = { v -> title = v.take(NetworkConfig.maxSessionTitleChars) },
2471+ modifier = Modifier.fillMaxWidth(),
2472+ placeholder = { Text(stringResource(R.string.session_title_hint)) },
2473+ label = { Text(stringResource(R.string.rename_session_chat)) },
2475+ keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
2476+ keyboardActions = KeyboardActions(onDone = { if (title.isNotBlank()) onConfirm(title.trim()) }),
2480+ TextButton(onClick = { if (title.isNotBlank()) onConfirm(title.trim()) }, enabled = title.isNotBlank()) {
2481+ Text(stringResource(R.string.save))
2485+ TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) }
2491+ * A single item in the chat message list — either a [Message] bubble or a day
2492+ * [Separator] inserted before the first message of a new day. The separator shifts
2493+ * the LazyColumn indices vs. the raw messages list, so scroll-target math must use
2494+ * the [List] of these items (not `messages.size`/`lastIndex`).
2496+private sealed interface MessageListItem {
2498+ val contentType: Any
2500+ data class Message(val message: MessageWithParts, override val key: Any) : MessageListItem {
2501+ override val contentType: Any get() = message.info::class
2504+ data class Separator(val label: String, val ordinal: Int) : MessageListItem {
2505+ // Key on the day-occurrence ordinal, not the label: two non-contiguous groups
2506+ // can share a label (e.g. an untimestamped message — empty label — between two
2507+ // same-day messages, or two untimestamped groups), and a label-only key would
2508+ // then collide, which makes LazyColumn throw on duplicate keys. The ordinal is
2509+ // stable for a given message ordering so slots aren't needlessly recreated.
2510+ override val key: Any get() = "sep_${ordinal}_$label"
2511+ // Separators share a contentType so the LazyColumn can recycle their slots.
2512+ override val contentType: Any get() = "separator"
2517+ * Build the interleaved list of [MessageListItem]s for the message list, inserting a
2518+ * [MessageListItem.Separator] before the first message of each new calendar day. Uses
2519+ * the message's `time.created` (falling back to `updated` then `completed`) to bucket.
2520+ * Messages with no timestamp are grouped under an empty-label separator only if they
2521+ * start the list, so a server that omits timestamps doesn't suppress the first divider.
2523+ * [todayLabel]/[yesterdayLabel] are resolved by the caller (a @Composable can't call
2524+ * stringResource from inside this plain function) and used for the "Today"/"Yesterday"
2525+ * labels; older days fall back to a locale-stable medium-date format.
2527+private fun buildMessageListItems(
2528+ messages: List<MessageWithParts>,
2529+ todayLabel: String,
2530+ yesterdayLabel: String,
2531+): List<MessageListItem> {
2532+ if (messages.isEmpty()) return emptyList()
2533+ val today = java.time.LocalDate.now(java.time.ZoneId.systemDefault())
2534+ val dateFmt = mediumDateFormat()
2535+ val result = ArrayList<MessageListItem>(messages.size + 4)
2536+ val seenKeys = HashSet<String>(messages.size * 2)
2537+ var lastDayKey: String? = null
2539+ var emptyIdOrdinal = 0
2541+ for (message in messages) {
2542+ val ts = message.info.time?.created ?: message.info.time?.updated ?: message.info.time?.completed
2543+ val dayKey = ts?.let { dayKey(it) } ?: ""
2544+ // Emit a separator before the very first message (so a leading un-timestamped message
2545+ // still gets the first divider, empty label and all), and thereafter only when crossing
2546+ // into a new NON-empty calendar day. An un-timestamped message mid-list (empty key)
2547+ // neither emits its own separator nor resets the day — otherwise a following same-day
2548+ // message would see a "" -> "<today>" transition and emit a duplicate "Today" header.
2549+ if (first || (dayKey.isNotEmpty() && dayKey != lastDayKey)) {
2550+ result.add(MessageListItem.Separator(dayLabel(dayKey, ts ?: 0L, today, todayLabel, yesterdayLabel, dateFmt), sepOrdinal++))
2552+ if (dayKey.isNotEmpty()) lastDayKey = dayKey
2554+ // Most messages have a unique non-empty id. An unrecognized-role message can carry an
2555+ // empty id — and the reducer intentionally keeps several such messages as distinct
2556+ // holders — so give each a stable synthetic key and defensively de-collide any remaining
2557+ // duplicate; otherwise LazyColumn throws on a duplicate key and the whole screen crashes.
2558+ var key = message.info.id.ifEmpty { "msg-empty-${emptyIdOrdinal++}" }
2559+ if (!seenKeys.add(key)) {
2561+ while (!seenKeys.add("$key#$suffix")) suffix++
2562+ key = "$key#$suffix"
2564+ result.add(MessageListItem.Message(message, key))
2570+ * A stable bucket key for a timestamp's calendar day (epoch-days as a string).
2572+ * [buildMessageListItems] re-runs on every streaming snapshot (the memo is keyed on the
2573+ * whole `messages` list, which must stay so the live message's fresh parts render), so a
2574+ * naive implementation would re-allocate an `Instant`/`ZonedDateTime`/`LocalDate` for
2575+ * every message on every token. Message timestamps are immutable once assigned, so we
2576+ * memoize the parse per epoch-millis: after the first snapshot, each unchanged message is
2577+ * a cheap hash lookup. Bounded LRU (access-order) caps memory; only touched on the main
2578+ * thread during composition, so the coarse lock is uncontended.
2580+private val dayKeyCache = object : LinkedHashMap<Long, String>(128, 0.75f, true) {
2581+ override fun removeEldestEntry(eldest: MutableMap.MutableEntry<Long, String>): Boolean = size > 1024
2584+private fun dayKey(epochMillis: Long): String = synchronized(dayKeyCache) {
2585+ dayKeyCache.getOrPut(epochMillis) {
2586+ java.time.Instant.ofEpochMilli(epochMillis)
2587+ .atZone(java.time.ZoneId.systemDefault()).toLocalDate().toEpochDay().toString()
2591+// The medium-date formatter is an ICU locale lookup; cache one instance instead of
2592+// allocating a fresh one per buildMessageListItems call, rebuilding only if the default
2593+// locale changes at runtime. Main-thread-only, so no synchronization is needed.
2594+private var cachedDateFmt: java.text.DateFormat? = null
2595+private var cachedDateFmtLocale: java.util.Locale? = null
2597+private fun mediumDateFormat(): java.text.DateFormat {
2598+ val locale = java.util.Locale.getDefault()
2599+ val existing = cachedDateFmt
2600+ if (existing != null && cachedDateFmtLocale == locale) return existing
2601+ return java.text.DateFormat.getDateInstance(java.text.DateFormat.MEDIUM).also {
2603+ cachedDateFmtLocale = locale
2608+ * Resolve a day-key back to a human-readable label. "Today" / "Yesterday" for the
2609+ * recent days, otherwise a locale-stable medium-date format. Returns an empty string
2610+ * when [dayKey] is empty (no timestamp) so no separator is rendered for un-timestamped
2613+private fun dayLabel(
2616+ today: java.time.LocalDate,
2617+ todayLabel: String,
2618+ yesterdayLabel: String,
2619+ dateFmt: java.text.DateFormat,
2621+ if (dayKey.isEmpty()) return ""
2622+ val epochDay = dayKey.toLongOrNull() ?: return ""
2623+ val date = java.time.LocalDate.ofEpochDay(epochDay)
2625+ date == today -> todayLabel
2626+ date == today.minusDays(1) -> yesterdayLabel
2627+ else -> dateFmt.format(java.util.Date(ts))
2632+ * A centered day divider in the message list. Renders nothing for an empty label
2633+ * (the no-timestamp case) so un-timestamped messages don't get a stray blank divider.
2636+private fun DateSeparator(label: String) {
2637+ if (label.isBlank()) return
2639+ modifier = Modifier.fillMaxWidth(),
2640+ horizontalArrangement = Arrangement.Center,
2643+ color = MaterialTheme.colorScheme.surfaceVariant,
2644+ shape = MaterialTheme.shapes.small,
2645+ // Marked as a heading so TalkBack users can navigate day-by-day with the
2646+ // heading-skip gesture — the canonical affordance for date dividers in a list.
2647+ modifier = Modifier.semantics(mergeDescendants = true) { heading() },
2651+ style = MaterialTheme.typography.labelSmall,
2652+ color = MaterialTheme.colorScheme.onSurfaceVariant,
2653+ modifier = Modifier.padding(horizontal = 12.dp, vertical = 4.dp),