@@ -1,3359 +0,0 @@
1−@file:Suppress("TooManyFunctions")
2−
3−package soy.iko.opencode.ui.chat
4−
5−import android.app.Activity
6−import android.content.Intent
7−import android.net.Uri
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.heightIn
33−import androidx.compose.foundation.layout.height
34−import androidx.compose.foundation.layout.imePadding
35−import androidx.compose.foundation.layout.ime
36−import androidx.compose.foundation.layout.navigationBars
37−import androidx.compose.foundation.layout.padding
38−import androidx.compose.foundation.layout.size
39−import androidx.compose.foundation.layout.union
40−import androidx.compose.foundation.layout.widthIn
41−import androidx.compose.foundation.layout.windowInsetsPadding
42−import androidx.compose.foundation.layout.wrapContentWidth
43−import androidx.compose.foundation.lazy.LazyColumn
44−import androidx.compose.foundation.lazy.items
45−import androidx.compose.foundation.lazy.rememberLazyListState
46−import androidx.compose.foundation.shape.RoundedCornerShape
47−import androidx.compose.material.icons.Icons
48−import androidx.compose.material.icons.automirrored.filled.ArrowBack
49−import androidx.compose.material.icons.automirrored.filled.Send
50−import androidx.compose.material.icons.filled.ErrorOutline
51−import androidx.compose.material.icons.filled.Add
52−import androidx.compose.material.icons.filled.AutoAwesome
53−import androidx.compose.material.icons.filled.Delete
54−import androidx.compose.material.icons.filled.Description
55−import androidx.compose.material.icons.filled.Close
56−import androidx.compose.material.icons.filled.Edit
57−import androidx.compose.material.icons.filled.Expand
58−import androidx.compose.material.icons.filled.FormatQuote
59−import androidx.compose.material.icons.filled.ExpandLess
60−import androidx.compose.material.icons.filled.ExpandMore
61−import androidx.compose.material.icons.filled.Search
62−import androidx.compose.material.icons.filled.KeyboardArrowDown
63−import androidx.compose.material.icons.filled.KeyboardArrowUp
64−import androidx.compose.material.icons.filled.Mic
65−import androidx.compose.material.icons.filled.MoreVert
66−import androidx.compose.material.icons.filled.PhotoCamera
67−import androidx.compose.material.icons.filled.PhotoLibrary
68−import androidx.compose.material.icons.filled.Refresh
69−import androidx.compose.material.icons.filled.Restore
70−import androidx.compose.material.icons.automirrored.filled.PlaylistAdd
71−import androidx.compose.material.icons.automirrored.filled.Reply
72−import androidx.compose.material.icons.filled.Schedule
73−import androidx.compose.material.icons.filled.Stop
74−import androidx.compose.material3.AlertDialog
75−import androidx.compose.material3.Badge
76−import androidx.compose.material3.BadgedBox
77−import androidx.compose.material3.Button
78−import androidx.compose.material3.CircularProgressIndicator
79−import androidx.compose.material3.SmallFloatingActionButton
80−import androidx.compose.material3.DropdownMenu
81−import androidx.compose.material3.DropdownMenuItem
82−import androidx.compose.material3.ExperimentalMaterial3Api
83−import androidx.compose.material3.ExtendedFloatingActionButton
84−import androidx.compose.material3.FloatingActionButton
85−import androidx.compose.material3.Icon
86−import androidx.compose.material3.IconButton
87−import androidx.compose.material3.MaterialTheme
88−import androidx.compose.material3.OutlinedTextField
89−import androidx.compose.material3.Scaffold
90−import androidx.compose.material3.SnackbarDuration
91−import androidx.compose.material3.SwipeToDismissBox
92−import androidx.compose.material3.SwipeToDismissBoxValue
93−import androidx.compose.material3.rememberSwipeToDismissBoxState
94−import androidx.compose.material3.SnackbarHost
95−import androidx.compose.material3.SnackbarHostState
96−import androidx.compose.material3.SnackbarResult
97−import androidx.compose.material3.Surface
98−import androidx.compose.material3.Text
99−import androidx.compose.material3.TextButton
100−import androidx.compose.material3.TopAppBar
101−import androidx.compose.material3.pulltorefresh.PullToRefreshBox
102−import androidx.compose.runtime.Composable
103−import androidx.compose.runtime.CompositionLocalProvider
104−import androidx.compose.runtime.DisposableEffect
105−import androidx.compose.runtime.LaunchedEffect
106−import androidx.compose.runtime.derivedStateOf
107−import androidx.compose.runtime.getValue
108−import androidx.compose.runtime.mutableIntStateOf
109−import androidx.compose.runtime.mutableLongStateOf
110−import androidx.compose.runtime.mutableStateOf
111−import androidx.compose.runtime.produceState
112−import androidx.compose.runtime.remember
113−import androidx.compose.runtime.rememberCoroutineScope
114−import androidx.compose.runtime.rememberUpdatedState
115−import androidx.compose.runtime.saveable.rememberSaveable
116−import androidx.compose.runtime.setValue
117−import androidx.compose.runtime.snapshotFlow
118−import androidx.compose.foundation.text.KeyboardActions
119−import androidx.compose.foundation.text.KeyboardOptions
120−import androidx.compose.ui.text.input.KeyboardCapitalization
121−import androidx.compose.ui.Alignment
122−import androidx.compose.ui.Modifier
123−import androidx.compose.ui.draw.alpha
124−import androidx.compose.ui.draw.clip
125−import androidx.compose.ui.focus.focusRequester
126−import androidx.compose.ui.input.key.Key
127−import androidx.compose.ui.input.key.KeyEventType
128−import androidx.compose.ui.input.key.isCtrlPressed
129−import androidx.compose.ui.input.key.isShiftPressed
130−import androidx.compose.ui.input.key.key
131−import androidx.compose.ui.input.key.onPreviewKeyEvent
132−import androidx.compose.ui.input.key.type
133−import androidx.compose.ui.layout.onSizeChanged
134−import androidx.compose.ui.platform.LocalContext
135−import androidx.compose.ui.platform.LocalDensity
136−import androidx.compose.ui.platform.LocalHapticFeedback
137−import androidx.compose.ui.platform.LocalLayoutDirection
138−import androidx.compose.ui.platform.LocalView
139−import androidx.compose.ui.platform.testTag
140−import androidx.compose.ui.unit.LayoutDirection
141−import androidx.compose.ui.res.pluralStringResource
142−import androidx.compose.ui.res.stringResource
143−import androidx.compose.ui.semantics.Role
144−import androidx.compose.ui.semantics.contentDescription
145−import androidx.compose.ui.semantics.heading
146−import androidx.compose.ui.semantics.liveRegion
147−import androidx.compose.ui.semantics.LiveRegionMode
148−import androidx.compose.ui.semantics.invisibleToUser
149−import androidx.compose.ui.semantics.semantics
150−import androidx.compose.ui.text.input.ImeAction
151−import androidx.compose.ui.text.style.TextOverflow
152−import androidx.compose.ui.unit.dp
153−import androidx.lifecycle.compose.collectAsStateWithLifecycle
154−import androidx.lifecycle.viewmodel.compose.viewModel
155−import kotlinx.coroutines.Dispatchers
156−import kotlinx.coroutines.coroutineScope
157−import kotlinx.coroutines.delay
158−import kotlinx.coroutines.flow.distinctUntilChanged
159−import kotlinx.coroutines.launch
160−import kotlinx.coroutines.withContext
161−import soy.iko.opencode.data.model.Part
162−import soy.iko.opencode.data.model.MessageWithParts
163−import soy.iko.opencode.data.model.AssistantMessage
164−import soy.iko.opencode.data.model.Command
165−import soy.iko.opencode.data.model.ReasoningPart
166−import soy.iko.opencode.data.model.TextPart
167−import soy.iko.opencode.data.model.ToolCompleted
168−import soy.iko.opencode.data.model.ToolError
169−import soy.iko.opencode.data.model.ToolPart
170−import soy.iko.opencode.data.model.ToolRunning
171−import soy.iko.opencode.data.model.FilePart
172−import soy.iko.opencode.data.model.sourcePath
173−import soy.iko.opencode.data.model.inputElement
174−import soy.iko.opencode.data.network.EventStreamClient
175−import soy.iko.opencode.data.network.NetworkConfig
176−import soy.iko.opencode.di.AppContainer
177−import soy.iko.opencode.R
178−import soy.iko.opencode.ui.components.CommandPalette
179−import soy.iko.opencode.ui.components.ConnectionBanner
180−import soy.iko.opencode.ui.components.DiffView
181−import soy.iko.opencode.ui.components.PaletteAction
182−import soy.iko.opencode.ui.components.LocalReducedMotion
183−import soy.iko.opencode.ui.components.LocalSearchHighlight
184−import soy.iko.opencode.ui.components.reducedMotionAnimateItem
185−import soy.iko.opencode.ui.components.copyToClipboard
186−import soy.iko.opencode.ui.components.LocalRelativeTimeTick
187−import soy.iko.opencode.ui.components.rememberRelativeTimeTick
188−import soy.iko.opencode.ui.components.rememberVisibilityTransitions
189−import soy.iko.opencode.ui.components.showToast
190−import soy.iko.opencode.ui.components.toImageContext
191−import soy.iko.opencode.ui.vmFactory
192−import soy.iko.opencode.util.runCatchingCancellable
193−
194−// Optional message id to scroll to and briefly highlight on first load (from global search).
195−// Consumed once: after the message is scrolled into view and highlighted, the focus is
196−// cleared so subsequent recompositions don't re-trigger the scroll.
197−@OptIn(ExperimentalMaterial3Api::class)
198−@Composable
199−fun ChatScreen(
200− container: AppContainer,
201− sessionId: String,
202− onBack: () -> Unit,
203− onOpenFile: ((String) -> Unit)? = null,
204− onOpenSession: ((String) -> Unit)? = null,
205− focusMessageId: String? = null,
206− onEditProfile: ((String) -> Unit)? = null,
207−) {
208− val vm: ChatViewModel = viewModel(key = sessionId, factory = vmFactory { ChatViewModel(container, sessionId) })
209− val hasMessages by vm.hasMessages.collectAsStateWithLifecycle()
210− val running by vm.running.collectAsStateWithLifecycle()
211− val streamInterrupted by vm.streamInterrupted.collectAsStateWithLifecycle()
212− val aborting by vm.aborting.collectAsStateWithLifecycle()
213− val loading by vm.loading.collectAsStateWithLifecycle()
214− val loadError by vm.loadError.collectAsStateWithLifecycle()
215− val loadErrorInline by vm.loadErrorInline.collectAsStateWithLifecycle()
216− val refreshing by vm.refreshing.collectAsStateWithLifecycle()
217− val models by vm.models.collectAsStateWithLifecycle()
218− val modelsLoading by vm.modelsLoading.collectAsStateWithLifecycle()
219− val modelsError by vm.modelsError.collectAsStateWithLifecycle()
220− val selectedModel by vm.selectedModel.collectAsStateWithLifecycle()
221− val connectionState by vm.connectionState.collectAsStateWithLifecycle()
222− val reconnectAttempts by vm.reconnectAttempts.collectAsStateWithLifecycle()
223− val pendingPermission by vm.pendingPermission.collectAsStateWithLifecycle()
224− val permissionProgress by vm.permissionProgress.collectAsStateWithLifecycle()
225− val agents by vm.agents.collectAsStateWithLifecycle()
226− val agentsLoading by vm.agentsLoading.collectAsStateWithLifecycle()
227− val agentsError by vm.agentsError.collectAsStateWithLifecycle()
228− val selectedAgent by vm.selectedAgent.collectAsStateWithLifecycle()
229− val commands by vm.commands.collectAsStateWithLifecycle()
230− val commandsLoading by vm.commandsLoading.collectAsStateWithLifecycle()
231− val commandsError by vm.commandsError.collectAsStateWithLifecycle()
232− val sessionTitle by vm.sessionTitle.collectAsStateWithLifecycle()
233− val sessionDeleted by vm.sessionDeleted.collectAsStateWithLifecycle()
234− val draft by vm.draft.collectAsStateWithLifecycle()
235− val pendingQuote by vm.pendingQuote.collectAsStateWithLifecycle()
236− val attachments by vm.attachments.collectAsStateWithLifecycle()
237− val reverted by vm.reverted.collectAsStateWithLifecycle()
238− val editing by vm.editing.collectAsStateWithLifecycle()
239− val revertDiff by vm.revertDiff.collectAsStateWithLifecycle()
240− val shareUrl by vm.shareUrl.collectAsStateWithLifecycle()
241− val reconnecting by vm.reconnecting.collectAsStateWithLifecycle()
242− val sendOnEnter by container.settingsStore.sendOnEnter.collectAsStateWithLifecycle(initialValue = true)
243− val preferredModelId by container.settingsStore.preferredModelId.collectAsStateWithLifecycle(initialValue = "")
244− val recentModelEntries by container.recentModelsStore.entries.collectAsStateWithLifecycle()
245− val compactSpacing by container.settingsStore.compactMessageSpacing.collectAsStateWithLifecycle(initialValue = false)
246− val notifPermission by container.settingsStore.notifPermission.collectAsStateWithLifecycle(initialValue = true)
247− val isOnline by container.isOnline.collectAsStateWithLifecycle()
248− val haptics = LocalHapticFeedback.current
249− val layoutDirection = LocalLayoutDirection.current
250− val scope = rememberCoroutineScope()
251− val shareContext = LocalContext.current
252− val defaultShareSubject = stringResource(R.string.share_subject)
253− val sessionLabel = stringResource(R.string.session)
254− val defaultModelLabel = stringResource(R.string.default_model)
255− val subtitle = remember(selectedModel?.modelLabel, selectedAgent, defaultModelLabel) {
256− buildString {
257− append(selectedModel?.modelLabel ?: defaultModelLabel)
258− selectedAgent?.let { append(" · $it") }
259− }
260− }
261−
262− // Connection profile (with auth) for rendering inline image attachments.
263− // Collect as state so a server switch recomposes the image context.
264− val activeConnection by container.activeConnection.collectAsStateWithLifecycle()
265− val imageContext = remember(activeConnection?.profile) {
266− activeConnection?.profile?.toImageContext()
267− }
268−
269− // Mark this session as read while the user is viewing it; clear on leave so new
270− // background activity can badge it again.
271− DisposableEffect(sessionId) {
272− container.setCurrentSession(sessionId)
273− onDispose { if (container.currentSession.value == sessionId) container.setCurrentSession(null) }
274− }
275−
276− // Navigate away when the session is deleted via SSE so the user isn't left
277− // on a zombie screen showing a conversation that no longer exists. Surface a
278− // toast (not a snackbar) because the screen is about to be popped — a snackbar
279− // would be torn down before the user could read it, while a toast survives.
280− // Covers both SSE-driven deletion (deleted on another device) and a user-
281− // initiated delete from the chat overflow menu (deleteSession in ChatViewModel
282− // sets the same flag on success).
283− val deletedContext = LocalContext.current
284− LaunchedEffect(sessionDeleted) {
285− if (sessionDeleted) {
286− showToast(deletedContext, deletedContext.getString(R.string.session_deleted_chat))
287− onBack()
288− }
289− }
290−
291− val snackbar = remember { SnackbarHostState() }
292− val retryLabel = stringResource(R.string.retry)
293− val inputFocusRequester = remember { androidx.compose.ui.focus.FocusRequester() }
294− // Dedicated focus requester for the in-conversation search field. The overflow menu's
295− // "Find in conversation" and Ctrl+F previously called inputFocusRequester.requestFocus()
296− // (the composer), so typing went to the composer instead of the search field.
297− val searchFocusRequester = remember { androidx.compose.ui.focus.FocusRequester() }
298− var showModelPicker by rememberSaveable { mutableStateOf(false) }
299− var showAgentPicker by rememberSaveable { mutableStateOf(false) }
300− var showTitleMenu by rememberSaveable { mutableStateOf(false) }
301− var showCommandPicker by rememberSaveable { mutableStateOf(false) }
302− var showExitConfirm by rememberSaveable { mutableStateOf(false) }
303− var showOverflowMenu by rememberSaveable { mutableStateOf(false) }
304− var showRenameDialog by rememberSaveable { mutableStateOf(false) }
305− var showDeleteDialog by rememberSaveable { mutableStateOf(false) }
306− var showShellDialog by rememberSaveable { mutableStateOf(false) }
307− var showPalette by rememberSaveable { mutableStateOf(false) }
308− var showShortcutsDialog by rememberSaveable { mutableStateOf(false) }
309− var searchActive by rememberSaveable { mutableStateOf(false) }
310− var chatSearch by rememberSaveable { mutableStateOf("") }
311− // Index of the currently-focused in-conversation search match (into the filtered list).
312− // Drives the up/down navigation: the search bar's arrows step through matches and scroll
313− // the list to each one, mirroring desktop chat apps (the bare filtered list previously
314− // required reading each message to find the term).
315− var searchPos by rememberSaveable { mutableIntStateOf(0) }
316− // Summarize and init (generate AGENTS.md) are irreversible, so a single tap is gated behind
317− // a confirmation dialog (from both the overflow menu and the command palette).
318− var showSummarizeConfirm by rememberSaveable { mutableStateOf(false) }
319− var showInitConfirm by rememberSaveable { mutableStateOf(false) }
320−
321− // Command-palette entries (keyboard-first: Ctrl+K). Labels resolved here so the remembered
322− // action list doesn't need a Composable context. Actions map to the same handlers the
323− // overflow menu drives, so the palette is a keyboard shortcut to them, not a parallel path.
324− val paletteModelLabel = stringResource(R.string.palette_switch_model)
325− val paletteAgentLabel = stringResource(R.string.palette_choose_agent)
326− val paletteCommandLabel = stringResource(R.string.palette_run_command)
327− val paletteSummarizeLabel = stringResource(R.string.palette_summarize)
328− val paletteRenameLabel = stringResource(R.string.rename_session_chat)
329− val paletteShellLabel = stringResource(R.string.run_shell_command)
330− val paletteActions = remember(
331− paletteModelLabel, paletteAgentLabel, paletteCommandLabel,
332− paletteSummarizeLabel, paletteRenameLabel, paletteShellLabel, hasMessages, running,
333− ) {
334− buildList {
335− add(PaletteAction("model", paletteModelLabel) { showModelPicker = true })
336− add(PaletteAction("agent", paletteAgentLabel) { showAgentPicker = true })
337− add(PaletteAction("command", paletteCommandLabel) { showCommandPicker = true })
338− if (hasMessages && !running) add(PaletteAction("summarize", paletteSummarizeLabel) { showSummarizeConfirm = true })
339− if (!running) add(PaletteAction("shell", paletteShellLabel) { showShellDialog = true })
340− add(PaletteAction("rename", paletteRenameLabel) { showRenameDialog = true })
341− }
342− }
343−
344− // Keep the screen awake while the agent is working in *this* session. The foreground
345− // service that holds process priority during a run is managed app-wide off
346− // container.anyRunActive (see OpencodeApp) so it survives navigating away from the chat
347− // mid-run — otherwise leaving the screen would drop priority and Doze could choke the
348− // SSE stream before the completion notification fires.
349− val currentView = LocalView.current
350− val appContext = LocalContext.current.applicationContext
351− DisposableEffect(running) {
352− currentView.keepScreenOn = running
353− onDispose { currentView.keepScreenOn = false }
354− }
355−
356− LaunchedEffect(Unit) {
357− vm.errorEvents.collect { event ->
358− // Only a failed *send* is retryable; attaching Retry to any other error (e.g. a
359− // message-load failure) would silently re-submit the last prompt on tap.
360− val result = if (event.retryable) {
361− snackbar.showSnackbar(message = event.message, actionLabel = retryLabel)
362− } else {
363− snackbar.showSnackbar(event.message)
364− }
365− if (result == androidx.compose.material3.SnackbarResult.ActionPerformed) vm.retryFailed()
366− }
367− }
368−
369− // Stop-undo: abort() emits the last-sent prompt here so this collector can show a
370− // "Stopped — Undo" snackbar. Tapping Undo re-sends the prompt, recovering an accidental
371− // Stop without a confirmation dialog (Stop now happens on first tap).
372− val undoStopLabel = stringResource(R.string.undo)
373− val stoppedLabel = stringResource(R.string.run_stopped_undo)
374− LaunchedEffect(Unit) {
375− vm.stopUndoEvents.collect { prompt ->
376− if (prompt != null) {
377− val result = snackbar.showSnackbar(message = stoppedLabel, actionLabel = undoStopLabel)
378− if (result == androidx.compose.material3.SnackbarResult.ActionPerformed) vm.resendLastPrompt()
379− }
380− }
381− }
382−
383− // In-place Undo for a user-initiated session delete. The delete is deferred for an undo
384− // window on the container; show the snackbar over the conversation the user is viewing so
385− // they can cancel without being navigated to the session list first. If the window expires
386− // the scheduled delete sets `sessionDeleted` and the effect below navigates away.
387− val undoLabel = stringResource(R.string.undo)
388− val sessionDeletedLabel = stringResource(R.string.session_deleted_chat)
389− LaunchedEffect(Unit) {
390− vm.deleteUndoEvents.collect {
391− coroutineScope {
392− val dismisser = launch {
393− delay(NetworkConfig.undoDeleteDelayMs)
394− snackbar.currentSnackbarData?.dismiss()
395− }
396− val result = snackbar.showSnackbar(
397− message = sessionDeletedLabel,
398− actionLabel = undoLabel,
399− duration = SnackbarDuration.Indefinite,
400− )
401− dismisser.cancel()
402− if (result == SnackbarResult.ActionPerformed) vm.cancelSessionDelete()
403− }
404− }
405− }
406−
407− // --- Attachments, voice, and share-link plumbing ---
408− val attachTooLargeMsg = stringResource(R.string.attachment_too_large)
409− val attachFailedMsg = stringResource(R.string.attachment_failed)
410− val attachLimitMsg = stringResource(R.string.attachment_limit)
411− val noCameraMsg = stringResource(R.string.no_camera_app)
412− val noVoiceMsg = stringResource(R.string.no_voice_app)
413− val voicePrompt = stringResource(R.string.voice_prompt)
414− val linkCopiedMsg = stringResource(R.string.link_copied)
415− val ttsUnavailableMsg = stringResource(R.string.tts_unavailable)
416−
417− // Count of picks currently being read + base64-encoded off the main thread, so the
418− // composer can show a staging placeholder immediately (chips only materialize once done).
419− var stagingCount by remember { mutableStateOf(0) }
420− // Total number of files still being staged across all in-flight batches, so the
421− // staging chip can show "Staging N files…" rather than a bare indeterminate spinner.
422− // A separate counter from [stagingCount] (which tracks batches, not files) so a
423− // multi-file pick reads as more work than a single-file pick.
424− var stagingFileTotal by remember { mutableStateOf(0) }
425−
426− // Convert each picked Uri to a base64 attachment off the main thread, honoring the
427− // per-prompt count cap and surfacing per-file errors without aborting the batch.
428− fun stageUris(uris: List<Uri>) {
429− if (uris.isEmpty()) return
430− scope.launch {
431− stagingCount++
432− stagingFileTotal += uris.size
433− try {
434− uris.forEachIndexed { index, uri ->
435− if (vm.attachments.value.size >= NetworkConfig.maxAttachments) {
436− snackbar.showSnackbar(attachLimitMsg)
437− // The cap dropped the rest of this batch; account for the files we
438− // won't process so stagingFileTotal doesn't linger over-counted,
439− // then abandon the batch. return@launch (not return@forEachIndexed)
440− // so the remaining uris aren't re-checked against a never-relieved
441− // cap (which would over-decrement the counter and re-fire the snackbar
442− // once per leftover uri). The `finally` below still decrements
443− // stagingCount.
444− stagingFileTotal -= uris.size - index
445− return@launch
446− }
447− when (val result = uri.toAttachmentResult(appContext)) {
448− is AttachmentResult.Ok -> vm.addAttachment(result.attachment)
449− AttachmentResult.TooLarge -> snackbar.showSnackbar(attachTooLargeMsg)
450− AttachmentResult.Failed -> snackbar.showSnackbar(attachFailedMsg)
451− }
452− stagingFileTotal--
453− }
454− } finally {
455− stagingCount--
456− }
457− }
458− }
459−
460− val photoPicker = rememberLauncherForActivityResult(
461− ActivityResultContracts.PickMultipleVisualMedia(NetworkConfig.maxAttachments),
462− ) { uris -> stageUris(uris) }
463−
464− val filePicker = rememberLauncherForActivityResult(
465− ActivityResultContracts.GetMultipleContents(),
466− ) { uris -> stageUris(uris) }
467−
468− // Uri survives a config change mid-capture so the TakePicture result still resolves.
469− var pendingCaptureUri by rememberSaveable { mutableStateOf<Uri?>(null) }
470− val cameraLauncher = rememberLauncherForActivityResult(
471− ActivityResultContracts.TakePicture(),
472− ) { success ->
473− val uri = pendingCaptureUri
474− pendingCaptureUri = null
475− if (success && uri != null) stageUris(listOf(uri))
476− }
477−
478− val voiceLauncher = rememberLauncherForActivityResult(
479− ActivityResultContracts.StartActivityForResult(),
480− ) { result ->
481− if (result.resultCode == Activity.RESULT_OK) {
482− val spoken = result.data
483− ?.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)
484− ?.firstOrNull()
485− ?.takeIf { it.isNotBlank() }
486− if (spoken != null) {
487− // Append to the existing draft rather than replacing, so dictation adds to
488− // whatever the user already typed.
489− val current = vm.draft.value
490− val combined = if (current.isBlank()) spoken else "$current $spoken"
491− vm.updateDraft(combined.take(NetworkConfig.maxDraftLengthChars))
492− }
493− }
494− }
495−
496− fun launchCamera() {
497− val uri = newCameraCaptureUri(appContext)
498− if (uri == null) {
499− scope.launch { snackbar.showSnackbar(attachFailedMsg) }
500− return
501− }
502− pendingCaptureUri = uri
503− runCatching { cameraLauncher.launch(uri) }
504− .onFailure { pendingCaptureUri = null; scope.launch { snackbar.showSnackbar(noCameraMsg) } }
505− }
506−
507− fun launchVoice() {
508− val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH).apply {
509− putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM)
510− putExtra(RecognizerIntent.EXTRA_PROMPT, voicePrompt)
511− }
512− runCatching { voiceLauncher.launch(intent) }
513− .onFailure { scope.launch { snackbar.showSnackbar(noVoiceMsg) } }
514− }
515−
516− // A freshly-created share link is copied to the clipboard so the user can paste it right away.
517− LaunchedEffect(Unit) {
518− vm.shareLinkEvents.collect { url ->
519− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_share), url)
520− snackbar.showSnackbar(linkCopiedMsg)
521− }
522− }
523−
524− // Navigate to a session freshly branched from a message (branchFrom), once it's created.
525− // Keyed on Unit (like the sibling one-shot collectors above): keying on the onOpenSession
526− // lambda would cancel/restart this collector whenever the lambda's identity changes, risking
527− // a dropped branch-navigation event in the gap.
528− val branchedMsg = stringResource(R.string.branch_created)
529− LaunchedEffect(Unit) {
530− vm.branchEvents.collect { newId ->
531− showToast(shareContext, branchedMsg)
532− onOpenSession?.invoke(newId)
533− }
534− }
535−
536− // Stage images shared into the app (via the system share sheet) as attachments.
537− // Keyed on pendingSharedMedia (not Unit) so the effect re-fires when new media arrives
538− // while this ChatScreen is already composed — which happens in two-pane mode, where the
539− // detail ChatScreen is persistent (keyed on sessionId) and a LaunchedEffect(Unit) would
540− // only fire on first composition. consumePendingSharedMedia() atomically drains the
541− // pending list (compareAndSet to empty), so re-firing on the now-empty value is a no-op.
542− val pendingSharedMedia by container.pendingSharedMedia.collectAsStateWithLifecycle()
543− LaunchedEffect(pendingSharedMedia) {
544− val shared = container.consumePendingSharedMedia()
545− if (shared.isNotEmpty()) stageUris(shared.map { Uri.parse(it) })
546− }
547−
548− fun doSend() {
549− if (vm.send(draft)) {
550− // TextHandleMove (a light tick) is semantically right for a send commit;
551− // LongPress is reserved for long-press/swipe gestures.
552− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
553− }
554− }
555−
556− BackHandler(enabled = running && !showModelPicker && !showAgentPicker && !showCommandPicker) { showExitConfirm = true }
557−
558− Scaffold(
559− // Hardware-keyboard shortcuts (tablets / DeX / Chromebooks): Ctrl+K opens the command
560− // palette; Escape closes it, or stops a run. onPreviewKeyEvent on the Scaffold root sees
561− // events before the focused text field, but only Ctrl+K / Escape are consumed so normal
562− // typing (and the composer's own Enter-to-send handling) is untouched.
563− modifier = Modifier.onPreviewKeyEvent { ev ->
564− if (ev.type != KeyEventType.KeyDown) return@onPreviewKeyEvent false
565− when {
566− ev.isCtrlPressed && ev.key == Key.K -> { showPalette = true; true }
567− // Ctrl+F opens in-conversation search (the standard find shortcut), focusing
568− // the field so the user can type immediately.
569− ev.isCtrlPressed && ev.key == Key.F -> { searchActive = true; true }
570− ev.key == Key.Escape && showPalette -> { showPalette = false; true }
571− ev.key == Key.Escape && searchActive -> { searchActive = false; chatSearch = ""; true }
572− ev.key == Key.Escape && running && !showExitConfirm -> {
573− vm.abort(); true
574− }
575− else -> false
576− }
577− },
578− topBar = {
579− TopAppBar(
580− title = {
581− val changeLabel = stringResource(R.string.change_model_agent)
582− // The subtitle reads "model · agent", so tapping the title offers *both*
583− // — a small menu picks which picker to open. Previously the tap went
584− // straight to the model picker, leaving the agent changeable only via
585− // the overflow menu despite the title implying otherwise.
586− Box {
587− Row(
588− // mergeDescendants so TalkBack reads the title/subtitle Texts as one
589− // node; the click label rides on `clickable` (onClickLabel) instead of
590− // an explicit contentDescription, which would have SUPPRESSED the child
591− // Texts and announced only "Change model and agent".
592− modifier = Modifier
593− .clickable(
594− role = Role.Button,
595− onClickLabel = changeLabel,
596− ) { showTitleMenu = true }
597− .semantics(mergeDescendants = true) {},
598− verticalAlignment = Alignment.CenterVertically,
599− ) {
600− Column(modifier = Modifier.weight(1f, fill = false)) {
601− // maxLines=1 + Ellipsis so a long session title can't wrap and
602− // push the top bar to multiple lines, shifting the whole layout.
603− Text(
604− sessionTitle ?: sessionLabel,
605− maxLines = 1,
606− overflow = TextOverflow.Ellipsis,
607− )
608− Text(
609− subtitle,
610− style = MaterialTheme.typography.labelSmall,
611− color = MaterialTheme.colorScheme.onSurfaceVariant,
612− maxLines = 1,
613− overflow = TextOverflow.Ellipsis,
614− )
615− }
616− // Always show the affordance so the title reads as tappable even when
617− // the model catalog failed to load (models empty). Without it the title
618− // is indistinguishable from plain text and the pickers are effectively
619− // undiscoverable — and the dropdown items already disable themselves
620− // while a catalog is loading or unavailable.
621− Icon(
622− Icons.Filled.KeyboardArrowDown,
623− contentDescription = null,
624− tint = MaterialTheme.colorScheme.onSurfaceVariant,
625− modifier = Modifier.size(20.dp),
626− )
627− }
628− DropdownMenu(expanded = showTitleMenu, onDismissRequest = { showTitleMenu = false }) {
629− DropdownMenuItem(
630− text = { Text(stringResource(R.string.palette_switch_model)) },
631− enabled = !modelsLoading || models.isNotEmpty(),
632− onClick = { showTitleMenu = false; showModelPicker = true },
633− )
634− DropdownMenuItem(
635− text = { Text(stringResource(R.string.palette_choose_agent)) },
636− enabled = !agentsLoading || agents.isNotEmpty(),
637− onClick = { showTitleMenu = false; showAgentPicker = true },
638− )
639− }
640− }
641− },
642− navigationIcon = {
643− IconButton(onClick = {
644− if (running) showExitConfirm = true else onBack()
645− }) {
646− Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(R.string.back))
647− }
648− },
649− actions = {
650− // At-a-glance run status in the top bar. When the user is scrolled
651− // up (jump-to-latest FAB visible), the input-bar Stop button and the
652− // trailing "working…" row are off-screen, so a top-bar spinner is the
653− // only signal the agent is still working.
654− if (running) {
655− val workingLabel = stringResource(R.string.working)
656− CircularProgressIndicator(
657− Modifier.size(18.dp).semantics { contentDescription = workingLabel },
658− strokeWidth = 2.dp,
659− )
660− }
661− // Manual refresh: forces an SSE reconnect, which re-seeds messages
662− // from REST. A recovery path when the stream silently drops and the
663− // auto-reconnect re-seed is slow or fails. Shows a brief spinner as
664− // immediate tap feedback — the SSE reconnect may not visibly change
665− // the connection state when already Connected, so without it the tap
666− // appears to do nothing. Disabled while a run is active: a mid-run
667− // refresh forces a reconnect that can interrupt the streaming reply,
668− // and the working spinner already signals "wait" — the recovery path
669− // is only needed when nothing is actively streaming.
670− val refreshLabel = stringResource(R.string.refresh)
671− IconButton(
672− onClick = { vm.refreshMessages() },
673− enabled = activeConnection != null && !refreshing && !running,
674− ) {
675− if (refreshing) {
676− CircularProgressIndicator(
677− Modifier.size(18.dp).semantics { contentDescription = refreshLabel },
678− strokeWidth = 2.dp,
679− )
680− } else {
681− Icon(Icons.Filled.Refresh, contentDescription = refreshLabel)
682− }
683− }
684− // Overflow menu consolidates the less-frequent actions (share,
685− // commands, agent, model, rename, delete) so the top bar stays
686− // scannable on narrow phones — previously 5 icons crowded the bar
687− // alongside the back button and tappable title. Catalog-loading
688− // spinners stay inline (next to the overflow) so a load state is
689− // visible without opening the menu.
690− val moreLabel = stringResource(R.string.more)
691− val loadingLabel = stringResource(R.string.loading)
692− val shareLabel = stringResource(R.string.share_conversation)
693− val copyAsMarkdownLabel = stringResource(R.string.copy_as_markdown)
694− val shareAsJsonLabel = stringResource(R.string.share_as_json)
695− val copyAsJsonLabel = stringResource(R.string.copy_as_json)
696− val commandsLabel = stringResource(R.string.commands)
697− val renameLabel = stringResource(R.string.rename_session_chat)
698− val deleteLabel = stringResource(R.string.delete_session_chat)
699− val createShareLabel = stringResource(R.string.create_share_link)
700− val copyShareLabel = stringResource(R.string.copy_share_link)
701− val stopShareLabel = stringResource(R.string.stop_sharing)
702− val summarizeLabel = stringResource(R.string.summarize_conversation)
703− val initLabel = stringResource(R.string.generate_agents_md)
704− val shellLabel = stringResource(R.string.run_shell_command)
705− Box {
706− IconButton(onClick = { showOverflowMenu = true }) {
707− Icon(Icons.Filled.MoreVert, contentDescription = moreLabel)
708− }
709− DropdownMenu(
710− expanded = showOverflowMenu,
711− onDismissRequest = { showOverflowMenu = false },
712− ) {
713− DropdownMenuItem(
714− text = { Text(shareLabel) },
715− enabled = hasMessages,
716− onClick = {
717− showOverflowMenu = false
718− scope.launch {
719− val md = withContext(Dispatchers.Default) {
720− buildConversationMarkdown(vm.messages.value, sessionTitle)
721− }
722− val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
723− type = "text/markdown"
724− putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
725− putExtra(android.content.Intent.EXTRA_TEXT, md)
726− }
727− runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareLabel)) }
728− .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
729− }
730− },
731− )
732− // Copy the whole conversation as Markdown to the clipboard, so a
733− // user can paste into another app without the share-sheet round-trip.
734− DropdownMenuItem(
735− text = { Text(copyAsMarkdownLabel) },
736− enabled = hasMessages,
737− onClick = {
738− showOverflowMenu = false
739− scope.launch {
740− val md = withContext(Dispatchers.Default) {
741− buildConversationMarkdown(vm.messages.value, sessionTitle)
742− }
743− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_message), md)
744− }
745− },
746− )
747− // Lossless JSON share: the full List<MessageWithParts> serialized with
748− // the shared OpencodeJson, so tool outputs, file sources, and reasoning
749− // survive verbatim (the Markdown export truncates/summarizes them).
750− DropdownMenuItem(
751− text = { Text(shareAsJsonLabel) },
752− enabled = hasMessages,
753− onClick = {
754− showOverflowMenu = false
755− scope.launch {
756− val json = withContext(Dispatchers.Default) {
757− buildConversationJson(vm.messages.value)
758− }
759− val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
760− type = "application/json"
761− putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
762− putExtra(android.content.Intent.EXTRA_TEXT, json)
763− }
764− runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareAsJsonLabel)) }
765− .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
766− }
767− },
768− )
769− DropdownMenuItem(
770− text = { Text(copyAsJsonLabel) },
771− enabled = hasMessages,
772− onClick = {
773− showOverflowMenu = false
774− scope.launch {
775− val json = withContext(Dispatchers.Default) {
776− buildConversationJson(vm.messages.value)
777− }
778− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_message), json)
779− }
780− },
781− )
782− DropdownMenuItem(
783− text = { Text(commandsLabel) },
784− enabled = !commandsLoading || commands.isNotEmpty(),
785− onClick = { showOverflowMenu = false; showCommandPicker = true },
786− )
787− DropdownMenuItem(
788− text = { Text(stringResource(R.string.keyboard_shortcuts)) },
789− onClick = { showOverflowMenu = false; showShortcutsDialog = true },
790− )
791− DropdownMenuItem(
792− text = { Text(stringResource(R.string.find_in_conversation)) },
793− onClick = {
794− showOverflowMenu = false
795− searchActive = true
796− // Focus is requested by the LaunchedEffect(searchActive)
797− // below, which waits for the search field to be composed
798− // before requesting focus (calling requestFocus here would
799− // target a field that isn't in the composition yet).
800− },
801− )
802− androidx.compose.material3.HorizontalDivider()
803− // Session sharing: create a public link, copy an existing one, or revoke it.
804− if (shareUrl == null) {
805− DropdownMenuItem(
806− text = { Text(createShareLabel) },
807− enabled = hasMessages,
808− onClick = { showOverflowMenu = false; vm.shareSession() },
809− )
810− } else {
811− DropdownMenuItem(
812− text = { Text(copyShareLabel) },
813− onClick = {
814− showOverflowMenu = false
815− shareUrl?.let {
816− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_share), it)
817− scope.launch { snackbar.showSnackbar(linkCopiedMsg) }
818− }
819− },
820− )
821− DropdownMenuItem(
822− text = { Text(stopShareLabel) },
823− onClick = { showOverflowMenu = false; vm.unshareSession() },
824− )
825− }
826− DropdownMenuItem(
827− text = { Text(summarizeLabel) },
828− enabled = hasMessages && !running,
829− onClick = { showOverflowMenu = false; showSummarizeConfirm = true },
830− )
831− DropdownMenuItem(
832− text = { Text(initLabel) },
833− enabled = !running,
834− onClick = { showOverflowMenu = false; showInitConfirm = true },
835− )
836− DropdownMenuItem(
837− text = { Text(shellLabel) },
838− enabled = !running,
839− onClick = { showOverflowMenu = false; showShellDialog = true },
840− )
841− androidx.compose.material3.HorizontalDivider()
842− DropdownMenuItem(
843− text = { Text(renameLabel) },
844− onClick = { showOverflowMenu = false; showRenameDialog = true },
845− )
846− DropdownMenuItem(
847− text = { Text(deleteLabel, color = MaterialTheme.colorScheme.error) },
848− onClick = { showOverflowMenu = false; showDeleteDialog = true },
849− )
850− }
851− // While a catalog is initially loading (empty list + loading flag),
852− // show a tiny inline spinner beside the overflow so the user can see
853− // a load is in progress without opening the menu. Once loaded the
854− // spinner disappears; the menu items are always enabled (tapping a
855− // picker with no items shows the "no models/agents/commands" state).
856− val catalogLoading = (commandsLoading && commands.isEmpty()) ||
857− (agentsLoading && agents.isEmpty()) ||
858− (modelsLoading && models.isEmpty())
859− if (catalogLoading) {
860− CircularProgressIndicator(
861− Modifier
862− .align(Alignment.TopEnd)
863− .size(10.dp)
864− .semantics { contentDescription = loadingLabel },
865− strokeWidth = 1.dp,
866− )
867− }
868− }
869− },
870− )
871− },
872− snackbarHost = { SnackbarHost(snackbar) },
873− bottomBar = {
874− val queuedFollowUp by vm.queuedFollowUp.collectAsStateWithLifecycle()
875− val todoPlan by vm.todoPlan.collectAsStateWithLifecycle()
876− val queuedOffline by vm.outbox.collectAsStateWithLifecycle()
877− val outboxSending by container.outboxSending.collectAsStateWithLifecycle()
878− Column {
879− // Pinned above the composer so the agent's plan and progress stay visible
880− // while scrolled up mid-run; renders nothing when there's no plan.
881− TodoPlanBar(todoPlan)
882− val bannerMotion = rememberVisibilityTransitions()
883− AnimatedVisibility(
884− visible = reverted,
885− enter = bannerMotion.enter,
886− exit = bannerMotion.exit,
887− ) {
888− RevertBanner(
889− diff = revertDiff,
890− isEditing = editing,
891− onUndo = { vm.unrevert() },
892− )
893− }
894− AnimatedVisibility(
895− visible = queuedOffline.isNotEmpty(),
896− enter = bannerMotion.enter,
897− exit = bannerMotion.exit,
898− ) {
899− OutboxBanner(
900− count = queuedOffline.size,
901− sending = outboxSending,
902− onFlush = { vm.flushQueued() },
903− onDiscard = { vm.discardAllQueued() },
904− )
905− }
906− AnimatedVisibility(
907− visible = pendingQuote != null,
908− enter = bannerMotion.enter,
909− exit = bannerMotion.exit,
910− ) {
911− pendingQuote?.let { QuoteReplyBanner(it, onCancel = { vm.cancelQuoteReply() }) }
912− }
913− ChatInputBar(
914− value = draft,
915− onValueChange = vm::updateDraft,
916− running = running,
917− aborting = aborting,
918− enabled = activeConnection != null,
919− sendOnEnter = sendOnEnter,
920− onSend = ::doSend,
921− onAbort = { vm.abort() },
922− queuedFollowUp = queuedFollowUp,
923− onQueueFollowUp = vm::queueFollowUp,
924− onCancelQueue = { vm.queueFollowUp("") },
925− focusRequester = inputFocusRequester,
926− attachments = attachments,
927− staging = stagingCount > 0,
928− stagingFileCount = stagingFileTotal,
929− onRemoveAttachment = vm::removeAttachment,
930− onPickPhoto = {
931− photoPicker.launch(
932− PickVisualMediaRequest(ActivityResultContracts.PickVisualMedia.ImageOnly),
933− )
934− },
935− onPickFile = { filePicker.launch("*/*") },
936− onCamera = { launchCamera() },
937− onVoice = { launchVoice() },
938− onPasteImage = { stageUris(it) },
939− commands = commands,
940− onRunCommand = { cmd ->
941− vm.runCommand(cmd)
942− // Clear the draft so the typed /prefix doesn't linger after the
943− // command fires (the command picker confirmation, if any, is
944− // handled inside runCommand).
945− vm.updateDraft("")
946− },
947− )
948− }
949− },
950− ) { padding ->
951− // Collect messages inside the content lambda so streaming token updates
952− // recompose only this subtree, not the top bar / input bar / 20+ other
953− // state reads in the ChatScreen body.
954− val messages by vm.messages.collectAsStateWithLifecycle()
955− val optimisticStatuses by vm.optimisticStatuses.collectAsStateWithLifecycle()
956− val listState = rememberLazyListState()
957− val contentScope = rememberCoroutineScope()
958− val timeTick = rememberRelativeTimeTick()
959− // Dismiss the soft keyboard when the user scrolls the message list, a standard Android
960− // chat affordance for reading while the IME is open. Watching isScrollInProgress via
961− // snapshotFlow avoids wiring a nested scroll connection and fires on any scroll gesture.
962− val keyboardController = androidx.compose.ui.platform.LocalSoftwareKeyboardController.current
963− androidx.compose.runtime.LaunchedEffect(listState) {
964− androidx.compose.runtime.snapshotFlow { listState.isScrollInProgress }
965− .distinctUntilChanged()
966− .collect { scrolling -> if (scrolling) keyboardController?.hide() }
967− } // Group messages by day and interleave date separators so a long conversation
968− // has visual "Today"/"Yesterday"/date breaks. Computed once per messages
969− // emission (memoized) so a scroll-induced recomposition doesn't re-scan. Lives
970− // outside the PullToRefreshBox so the auto-scroll effects below can reference
971− // the same list the LazyColumn renders (separators shift the indices vs. the
972− // raw messages list, so scroll targets must be in listItems space).
973− val todayLabel = stringResource(R.string.today)
974− val yesterdayLabel = stringResource(R.string.yesterday)
975− // In-conversation search: when active, narrow to messages whose text contains the query.
976− // Computed on the filtered set so day separators still align with the visible messages.
977− // Debounced + off-main-thread so a keystroke-by-keystroke filter walk over a long
978− // conversation (with many tool parts whose state stringification is non-trivial)
979− // doesn't jank the UI. produceState yields the empty list immediately and publishes
980− // the filtered result once the debounce settles.
981− val searchQuery = chatSearch.trim()
982− // When no search is active, skip the produceState indirection entirely and use the
983− // messages list directly. produceState keyed on (messages, searchQuery) re-launches
984− // its coroutine on every messages emission (every streamed token) even when the
985− // query is empty — the body just re-assigns `value = messages`, but the coroutine
986− // churn (launch + cancel + state write) ~20x/sec is pure overhead. Using `messages`
987− // directly when there's no search avoids that, and `buildMessageListItems` keys its
988− // own remember on the resulting list identity either way.
989− val searchMessages: List<MessageWithParts> = if (searchQuery.isEmpty()) {
990− messages
991− } else {
992− val filtered by produceState(
993− initialValue = emptyList(),
994− messages,
995− searchQuery,
996− ) {
997− // Debounce: wait for the user to stop typing before running the filter,
998− // so each keystroke doesn't kick off a fresh scan.
999− kotlinx.coroutines.delay(NetworkConfig.chatSearchDebounceMs)
1000− // Run the filter off the main thread — the walk stringifies tool state
1001− // and scans every part of every message, which is non-trivial work for a
1002− // long conversation.
1003− value = withContext(Dispatchers.Default) {
1004− messages.filter { m ->
1005− m.parts.any { p ->
1006− when (p) {
1007− is TextPart -> p.text.contains(searchQuery, ignoreCase = true)
1008− is ReasoningPart -> p.text.contains(searchQuery, ignoreCase = true)
1009− is ToolPart -> {
1010− // Match the tool name plus its running/completed/error text and the
1011− // stringified input, so searching for an error string or a file the
1012− // tool touched actually finds the message it appeared in.
1013− p.tool.contains(searchQuery, ignoreCase = true) ||
1014− (p.state is ToolRunning && p.state.title?.contains(searchQuery, ignoreCase = true) == true) ||
1015− (p.state is ToolCompleted && (p.state.title?.contains(searchQuery, ignoreCase = true) == true ||
1016− p.state.output?.contains(searchQuery, ignoreCase = true) == true)) ||
1017− (p.state is ToolError && p.state.error?.contains(searchQuery, ignoreCase = true) == true) ||
1018− p.state.inputElement()?.toString()?.contains(searchQuery, ignoreCase = true) == true
1019− }
1020− is FilePart -> p.filename?.contains(searchQuery, ignoreCase = true) == true ||
1021− p.sourcePath?.contains(searchQuery, ignoreCase = true) == true
1022− else -> false
1023− }
1024− }
1025− }
1026− }
1027− }
1028− filtered
1029− }
1030− // Keep the focused-match index in range as the query (and thus the match set) changes.
1031− // A new query resets to the first match; a shrunk set clamps to the last valid index.
1032− LaunchedEffect(searchQuery, searchMessages.size) {
1033− if (searchPos >= searchMessages.size) searchPos = 0
1034− }
1035− val listItems = remember(searchMessages, todayLabel, yesterdayLabel) {
1036− buildMessageListItems(searchMessages, todayLabel, yesterdayLabel)
1037− }
1038− // listItems is a plain (non-snapshot) local, rebuilt each recomposition. The
1039− // derivedStateOf and snapshotFlow lambdas below are created once (keyless
1040− // remember / LaunchedEffect(Unit)); reading `listItems` directly inside them
1041− // would capture the first composition's list — which is empty, since `messages`
1042− // starts empty — freezing it forever. That pinned isPinnedToBottom at true and
1043− // AutoScrollSignal.size at 0, breaking streaming auto-scroll and the
1044− // jump-to-latest FAB. rememberUpdatedState hands those lambdas a stable State
1045− // whose value tracks the latest list.
1046− val currentListItems by rememberUpdatedState(listItems)
1047−
1048− // New-content signal for the jump-to-latest FAB: counts how many new items arrived
1049− // while the user was scrolled away from the bottom, cleared once they return. A count
1050− // (vs. a bare dot) tells the user how much they missed at a glance.
1051− var newContentCount by remember { mutableIntStateOf(0) }
1052−
1053− val isPinnedToBottom by remember {
1054− derivedStateOf {
1055− val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
1056− // When a run is active, the LazyColumn has one trailing "__typing"
1057− // item after the last list item. Account for it so "pinned to bottom"
1058− // includes the working indicator — otherwise the pin check targets
1059− // listItems.lastIndex, the typing row sits just below the viewport,
1060− // and the user never sees the progress indicator even when pinned.
1061− val items = currentListItems
1062− val effectiveLast = if (running) items.size else items.lastIndex
1063− lastVisible >= effectiveLast || items.isEmpty()
1064− }
1065− }
1066−
1067− // Jump to the newest message once, when the conversation first loads. Guarded by a
1068− // saveable one-shot flag so it doesn't re-fire on recomposition after a config change
1069− // (rotation) — rememberLazyListState restores the user's scroll offset, and an
1070− // unconditional scrollToItem here would clobber it, snapping them back to the bottom.
1071− var didInitialScroll by rememberSaveable { mutableStateOf(false) }
1072− LaunchedEffect(listItems.isNotEmpty()) {
1073− if (listItems.isNotEmpty() && !didInitialScroll) {
1074− // When a run is active the LazyColumn has a trailing "__typing" row at
1075− // listItems.size; target it (not listItems.lastIndex) so deep-linking into a
1076− // running session lands truly pinned to bottom and streaming auto-scroll engages.
1077− listState.scrollToItem(if (running) listItems.size else listItems.lastIndex)
1078− didInitialScroll = true
1079− }
1080− }
1081−
1082− // When a run starts, the LazyColumn gains a trailing "__typing" row, so
1083− // effectiveLast jumps from listItems.lastIndex to listItems.size and the
1084− // isPinnedToBottom check flips to false the instant you send — freezing
1085− // auto-scroll. If the user was pinned to the last item just before the run
1086− // began, bring the typing row into view so the pin (and streaming follow) is
1087− // preserved. Guard on the raw last-visible index (isPinnedToBottom has already
1088− // recomputed to false by now) so we don't scroll when the user had scrolled up.
1089− LaunchedEffect(running) {
1090− if (running && listItems.isNotEmpty()) {
1091− val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
1092− if (lastVisible >= listItems.lastIndex) {
1093− runCatchingCancellable { listState.animateScrollToItem(listItems.size) }
1094− }
1095− }
1096− }
1097−
1098− // Scroll the focused search match into view whenever the user steps through results with
1099− // the up/down arrows. Resolves the filtered message to its slot in listItems (which
1100− // includes date separators) and animates there.
1101− LaunchedEffect(searchPos, searchQuery, listItems) {
1102− if (!searchActive || searchQuery.isEmpty()) return@LaunchedEffect
1103− val target = searchMessages.getOrNull(searchPos) ?: return@LaunchedEffect
1104− val index = listItems.indexOfFirst {
1105− it is MessageListItem.Message && it.message.info.id == target.info.id
1106− }
1107− if (index >= 0) runCatchingCancellable { listState.animateScrollToItem(index) }
1108− }
1109−
1110− // Global-search deep link: scroll to and briefly highlight the matched message. The
1111− // focus id is threaded through the chat route from GlobalSearchScreen. The highlight
1112− // clears itself after a short delay so the user can re-read the surrounding context
1113− // without a persistent marker. Runs once per focusMessageId (cleared on consume).
1114− var focusedMessageId by remember(focusMessageId) { mutableStateOf(focusMessageId) }
1115− LaunchedEffect(focusedMessageId, listItems) {
1116− val focus = focusedMessageId ?: return@LaunchedEffect
1117− if (listItems.isEmpty()) return@LaunchedEffect
1118− val index = listItems.indexOfFirst {
1119− it is MessageListItem.Message && it.message.info.id == focus
1120− }
1121− if (index < 0) return@LaunchedEffect
1122− runCatchingCancellable { listState.animateScrollToItem(index) }
1123− kotlinx.coroutines.delay(2500)
1124− focusedMessageId = null
1125− }
1126−
1127− // Scroll to bottom when the IME opens and the user was already pinned to bottom, so the
1128− // latest reply stays visible as the composer rises. Without this the IME can obscure the
1129− // last message even though the user was reading it a moment ago. WindowInsets.ime is a
1130− // @Composable property, so we read it inside a snapshotFlow registered in the composable
1131− // scope; the flow re-emits whenever the IME inset changes (open/close transitions).
1132− val density = androidx.compose.ui.platform.LocalDensity.current
1133− var wasImeOpen by remember { mutableStateOf(false) }
1134− val imeBottomPx = WindowInsets.ime.getBottom(density)
1135− androidx.compose.runtime.LaunchedEffect(imeBottomPx, listItems.isNotEmpty(), isPinnedToBottom) {
1136− if (listItems.isEmpty()) return@LaunchedEffect
1137− val imeOpen = imeBottomPx > 0
1138− // Scroll to bottom only on the open transition (not close) and only when the user
1139− // was already pinned to bottom — otherwise we'd yank them out of a mid-history read.
1140− val shouldScroll = imeOpen && !wasImeOpen && isPinnedToBottom
1141− if (shouldScroll) {
1142− runCatchingCancellable {
1143− listState.animateScrollToItem(if (running) listItems.size else listItems.lastIndex)
1144− }
1145− }
1146− wasImeOpen = imeOpen
1147− }
1148−
1149− LaunchedEffect(Unit) {
1150− var prevSize = 0
1151− var prevLen = 0
1152− snapshotFlow {
1153− // Track list size + the streaming length of the last part so we auto-scroll
1154− // as content arrives, plus the pinned flag. A small data class with primitive
1155− // fields avoids the per-frame boxing that Triple<Int,Int,Boolean> pays
1156− // (snapshotFlow re-evaluates this lambda every snapshot), and reading only the
1157− // last part's length is O(1) vs. a sumOf over every part. Covering reasoning
1158− // and tool output — not just TextPart — keeps a pinned view following a long
1159− // reasoning/tool block while it streams (previously it stalled at 0).
1160− val lastLen = streamingContentLength(messages.lastOrNull()?.parts?.lastOrNull())
1161− AutoScrollSignal(currentListItems.size, lastLen, isPinnedToBottom)
1162− }.collect { signal ->
1163− if (signal.pinned) {
1164− // Back at the bottom: clear the new-content badge.
1165− newContentCount = 0
1166− if (signal.size > 0) {
1167− // Scroll to the effective last index, including the trailing
1168− // "__typing" row when a run is active so the working indicator
1169− // is brought into view (not just the last message).
1170− val items = currentListItems
1171− val target = if (running) items.size else items.lastIndex
1172− listState.scrollToItem(target)
1173− }
1174− } else if (signal.size > prevSize || signal.lastTextLength > prevLen) {
1175− // Content arrived while scrolled up — increment the jump-to-latest badge.
1176− // Only count whole new items (not per-token growth) so the number reflects
1177− // new messages, not a token count.
1178− if (signal.size > prevSize) newContentCount += signal.size - prevSize
1179− else if (newContentCount == 0) newContentCount = 1
1180− }
1181− prevSize = signal.size
1182− prevLen = signal.lastTextLength
1183− }
1184− }
1185−
1186− CompositionLocalProvider(LocalRelativeTimeTick provides timeTick) {
1187− // The bottomBar (ChatInputBar) already has imePadding, and the Scaffold's
1188− // content padding accounts for the bottomBar's raised height, so the message
1189− // list is already above the keyboard. Adding imePadding here would double-apply
1190− // the IME inset and push messages too far up.
1191− //
1192− // BoxWithConstraints so the FABs and search bar can align to the capped (800dp)
1193− // message list on wide screens instead of floating at the screen edges — on a
1194− // tablet the list is a centered column, so edge-aligned FABs are visually detached.
1195− // The horizontal margin below is applied to the FAB/search containers so they
1196− // track the list's left/right edges.
1197− androidx.compose.foundation.layout.BoxWithConstraints(
1198− modifier = Modifier.fillMaxSize().padding(padding),
1199− ) {
1200− val screenMaxWidth = maxWidth
1201− val listMaxWidth = NetworkConfig.chatContentMaxWidthDp.dp
1202− // Horizontal margin between the capped list's edge and the screen edge (0 on
1203− // screens narrower than the cap). Applied as start/end padding so the FABs and
1204− // search bar sit at the list's edges, not the screen's.
1205− val sideMargin = ((screenMaxWidth - listMaxWidth) / 2).coerceAtLeast(0.dp)
1206− if (activeConnection == null) {
1207− Column(
1208− modifier = Modifier.align(Alignment.Center).padding(24.dp),
1209− horizontalAlignment = Alignment.CenterHorizontally,
1210− ) {
1211− Text(
1212− stringResource(R.string.not_connected),
1213− color = MaterialTheme.colorScheme.error,
1214− )
1215− Spacer(Modifier.size(12.dp))
1216− Button(onClick = { vm.reconnect() }, enabled = !reconnecting) {
1217− if (reconnecting) {
1218− CircularProgressIndicator(
1219− Modifier.size(20.dp),
1220− color = MaterialTheme.colorScheme.onPrimary,
1221− strokeWidth = 2.dp,
1222− )
1223− } else {
1224− Text(stringResource(R.string.reconnect))
1225− }
1226− }
1227− }
1228− } else {
1229− val bannerVisible = !isOnline || connectionState != EventStreamClient.ConnectionState.Connected
1230− // Measure the banner's actual height instead of hardcoding 44dp. At large
1231− // accessibility font scales the banner's labelMedium text + spinner + Retry
1232− // button exceed 44dp, so a fixed inset lets the first message hide behind it
1233− // (the same hazard FileViewScreen's overlay calls out). onSizeChanged only
1234− // fires while the banner is composed (visible), so gate the inset on
1235− // bannerVisible and fall back to 44dp until the first measurement arrives.
1236− var bannerHeightPx by remember { mutableIntStateOf(0) }
1237− // Track the search bar height so the list's top padding can grow when search
1238− // is active — otherwise a scrolled-to match lands at index 0, hidden behind
1239− // the floating search bar (the "scroll-under-the-search-bar" bug).
1240− var searchbarHeightPx by remember { mutableIntStateOf(0) }
1241− val density = LocalDensity.current
1242− val topPad = if (bannerVisible) {
1243− if (bannerHeightPx > 0) {
1244− with(density) { bannerHeightPx.toDp() } + 4.dp
1245− } else {
1246− 44.dp
1247− }
1248− } else {
1249− 16.dp
1250− } + if (searchActive && searchbarHeightPx > 0) {
1251− with(density) { searchbarHeightPx.toDp() } + 4.dp
1252− } else {
1253− 0.dp
1254− }
1255− ConnectionBanner(
1256− state = connectionState,
1257− modifier = Modifier.align(Alignment.TopCenter).onSizeChanged { bannerHeightPx = it.height },
1258− isOnline = isOnline,
1259− // On a hard endpoint failure, retry by forcing an SSE reconnect (which
1260− // re-seeds from REST). refreshMessages is the right recovery path
1261− // when the connection is present but the stream died; reconnect()
1262− // is the path when the whole connection is gone (handled by the
1263− // separate "Not connected" state below).
1264− onRetry = { vm.refreshMessages() },
1265− // On an auth failure (401/403), retrying with the same bad credentials
1266− // is futile — offer a one-tap path to edit the active profile's
1267− // credentials instead of making the user hunt for the server list.
1268− onEditCredentials = {
1269− val profileId = activeConnection?.profile?.id
1270− if (profileId != null) onEditProfile?.invoke(profileId)
1271− },
1272− reconnectAttempts = reconnectAttempts,
1273− )
1274− // Persistent inline error banner for a mid-conversation load failure.
1275− // Unlike the one-shot snackbar (which fires once per streak then goes
1276− // silent), this stays visible until the stream recovers, so a persistent
1277− // outage doesn't read as "everything is fine" after the snackbar dismisses.
1278− // Anchored at the top, below the connection banner, so it doesn't overlap
1279− // the message list.
1280− if (loadErrorInline && hasMessages) {
1281− Surface(
1282− color = MaterialTheme.colorScheme.errorContainer,
1283− shape = MaterialTheme.shapes.small,
1284− modifier = Modifier
1285− .align(Alignment.TopCenter)
1286− .padding(top = if (bannerVisible) topPad else 8.dp)
1287− .padding(horizontal = 16.dp)
1288− .semantics { liveRegion = LiveRegionMode.Polite },
1289− ) {
1290− Row(
1291− modifier = Modifier.padding(horizontal = 12.dp, vertical = 8.dp),
1292− verticalAlignment = Alignment.CenterVertically,
1293− horizontalArrangement = Arrangement.spacedBy(8.dp),
1294− ) {
1295− Icon(
1296− Icons.Filled.ErrorOutline,
1297− contentDescription = null,
1298− modifier = Modifier.size(16.dp),
1299− tint = MaterialTheme.colorScheme.onErrorContainer,
1300− )
1301− Text(
1302− stringResource(R.string.load_error_persistent),
1303− style = MaterialTheme.typography.labelMedium,
1304− color = MaterialTheme.colorScheme.onErrorContainer,
1305− modifier = Modifier.weight(1f),
1306− )
1307− TextButton(
1308− onClick = { vm.refreshMessages() },
1309− contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = 8.dp),
1310− ) {
1311− Text(stringResource(R.string.retry))
1312− }
1313− }
1314− }
1315− }
1316− // Pull-to-refresh wraps ALL content states (loading, error, empty, list) so
1317− // recovery is a swipe away everywhere — not just when the message list is
1318− // populated. Previously PTR was only around the populated list, leaving the
1319− // error/loading states reachable only via a button tap.
1320− PullToRefreshBox(
1321− isRefreshing = refreshing,
1322− // Suppress the refresh action while a run is active: a mid-stream
1323− // refresh forces an SSE reconnect that can interrupt the actively
1324− // streaming reply (matching the top-bar refresh button, which is
1325− // also disabled while running). The pull gesture still responds, but
1326− // the release no-ops instead of triggering a disruptive re-seed.
1327− onRefresh = { if (!running) vm.refreshMessages() },
1328− // Cap width and center on large screens for readability — full-width
1329− // bubbles stretch edge-to-edge on tablets, hurting line-length comfort.
1330− modifier = Modifier.fillMaxSize().wrapContentWidth(Alignment.CenterHorizontally)
1331− .widthIn(max = NetworkConfig.chatContentMaxWidthDp.dp),
1332− ) {
1333− // Reserve top space when the banner is visible so it doesn't overlap the
1334− // first message / state content. (topPad computed above.)
1335− if (loading && messages.isEmpty()) {
1336− // Skeleton bubbles pre-structure the layout so the perceived load is faster
1337− // than a bare centered spinner and the first real messages pop into an
1338− // already-shaped list instead of a blank-then-pop.
1339− ChatSkeleton(topPad = topPad)
1340− } else if (loadError && messages.isEmpty()) {
1341− // A failed load with nothing to show. Distinct from the empty
1342− // conversation state below — the conversation isn't empty, it
1343− // failed to load, and offering "Start a conversation" here is
1344− // misleading. Offer a Retry instead, mirroring SessionListScreen.
1345− Column(
1346− modifier = Modifier.align(Alignment.Center).padding(top = topPad).padding(24.dp),
1347− horizontalAlignment = Alignment.CenterHorizontally,
1348− ) {
1349− Text(
1350− stringResource(R.string.load_messages_failed),
1351− color = MaterialTheme.colorScheme.error,
1352− )
1353− Spacer(Modifier.size(12.dp))
1354− Button(onClick = { vm.refreshMessages() }) {
1355− Text(stringResource(R.string.retry))
1356− }
1357− // When the VM's retryWhen loop is actively retrying (loading is true
1358− // on top of the error state), surface a small "retrying…" indicator so
1359− // the user knows the system is working — without it, the static error
1360− // + Retry button reads as "broken, tap to fix", and the user may not
1361− // realize an automatic retry is already in progress.
1362− if (loading) {
1363− Spacer(Modifier.size(12.dp))
1364− val retryingLabel = stringResource(R.string.retrying_ellipsis)
1365− Row(verticalAlignment = Alignment.CenterVertically) {
1366− CircularProgressIndicator(
1367− Modifier.size(14.dp),
1368− strokeWidth = 2.dp,
1369− )
1370− Text(
1371− retryingLabel,
1372− style = MaterialTheme.typography.labelSmall,
1373− color = MaterialTheme.colorScheme.onSurfaceVariant,
1374− modifier = Modifier.padding(start = 6.dp),
1375− )
1376− }
1377− }
1378− }
1379− } else if (messages.isEmpty() && running) {
1380− // A run just started but no parts have arrived yet — the empty list with
1381− // only the trailing "working…" row looks broken. Reuse the skeleton bubbles
1382− // from the initial-load branch so the perceived start latency is lower and
1383− // the first real assistant part pops into an already-shaped list.
1384− ChatSkeleton(topPad = topPad)
1385− } else if (messages.isEmpty()) {
1386− EmptyConversation(
1387− onSuggestion = {
1388− vm.updateDraft(it)
1389− // Focus the input so the user can edit the suggestion before
1390− // sending, instead of having to manually tap the field.
1391− runCatching { inputFocusRequester.requestFocus() }
1392− },
1393− modifier = Modifier.align(Alignment.Center).padding(top = topPad),
1394− )
1395− } else {
1396− val lastMessageId = messages.lastOrNull()?.info?.id
1397− // Text-to-speech for reading assistant replies aloud; shuts down when the
1398− // message list leaves composition.
1399− val tts = rememberTtsController()
1400− val speakingMessageId by tts.speakingId
1401− val ttsState by tts.state
1402− // Provide the in-conversation search query to the markdown renderer so matching
1403− // text spans are highlighted in-place (in addition to the focused-row highlight
1404− // above). Scoped to the list so cleared search stops highlighting immediately.
1405− val activeSearchQuery = searchQuery.takeIf { searchActive && it.isNotEmpty() }
1406− CompositionLocalProvider(LocalSearchHighlight provides activeSearchQuery) {
1407− LazyColumn(
1408− state = listState,
1409− modifier = Modifier.fillMaxSize(),
1410− // Extra bottom padding reserves room for the jump-to-latest FAB so it
1411− // never floats over the last message. Top padding grows when the
1412− // connection banner is visible so it doesn't overlap the first message.
1413− contentPadding = PaddingValues(
1414− start = 16.dp,
1415− top = topPad,
1416− end = 16.dp,
1417− bottom = 16.dp + NetworkConfig.chatListFabInsetDp.dp,
1418− ),
1419− // Compact spacing (8dp) vs the default 16dp — a power-user toggle to fit
1420− // more conversation on screen without scrolling as much.
1421− verticalArrangement = Arrangement.spacedBy(if (compactSpacing) 8.dp else 16.dp),
1422− ) {
1423− items(
1424− items = listItems,
1425− key = { it.key },
1426− contentType = { it.contentType },
1427− ) { item ->
1428− // When in-conversation search is stepping through matches, highlight the
1429− // focused one's row so the user can spot it at a glance among the filtered
1430− // results (full in-text term highlighting would require threading the query
1431− // through the markdown renderer; the row highlight + scroll-to-match covers
1432− // the navigation use case desktop chat apps solve with next/prev).
1433− val focusedMatchId = if (searchActive && searchQuery.isNotEmpty()) {
1434− searchMessages.getOrNull(searchPos)?.info?.id
1435− } else null
1436− val isFocusedMatch = focusedMatchId != null &&
1437− item is MessageListItem.Message &&
1438− item.message.info.id == focusedMatchId
1439− // Default placement animation so inserted/moved rows glide in. Skipped
1440− // entirely under reduced motion so a streaming message growing in place
1441− // doesn't animate on every token (and respects the a11y preference).
1442− Box(
1443− Modifier
1444− .then(reducedMotionAnimateItem())
1445− .then(
1446− if (isFocusedMatch) {
1447− Modifier.background(
1448− MaterialTheme.colorScheme.secondaryContainer,
1449− MaterialTheme.shapes.medium,
1450− )
1451− } else {
1452− Modifier
1453− },
1454− ),
1455− ) {
1456− when (item) {
1457− is MessageListItem.Separator -> DateSeparator(item.label)
1458− is MessageListItem.Message -> {
1459− val message = item.message
1460− val messageId = message.info.id
1461− // Only the last (streaming) message needs isRunning — it drives the
1462− // reasoning-block spinner. Passing the live flag to every bubble
1463− // makes all visible messages recompose whenever a run starts or stops.
1464− val modelLabel = remember(message.info, models) {
1465− (message.info as? soy.iko.opencode.data.model.AssistantMessage)
1466− ?.let { resolveModelLabel(it, models) }
1467− }
1468− // Key agentLabel/quoteText on the message id (not message.parts) so
1469− // the streaming message — whose `parts` list is replaced on every
1470− // token — doesn't re-run filterIsInstance per token for these two
1471− // derived labels. For a non-streaming message, `message.parts` is
1472− // reference-stable anyway, so this is equivalent. For the streaming
1473− // message the label updates as parts change via the message.info/
1474− // parts reference change below — keyed on messageId + a parts-hash
1475− // is overkill; agentLabel/quoteText only need to reflect the latest
1476− // parts, and `remember(messageId, message.parts)` would re-key per
1477− // token. Instead key on `messageId` alone and accept that the label
1478− // lags by one recomposition for the streaming bubble (it stabilizes
1479− // once the stream finishes). This is invisible in practice: agent
1480− // label is set on the first part, quote text grows with text parts
1481− // but is only consumed on a swipe (user-initiated, post-stream).
1482− val agentLabel = remember(messageId, message.parts) {
1483− message.parts
1484− .filterIsInstance<soy.iko.opencode.data.model.AgentPart>()
1485− .firstOrNull { it.name.isNotBlank() }?.name
1486− }
1487− // Text used to drive swipe-to-reply (and pre-fill the quote). Empty for
1488− // image/code-only messages, which then opt out of the swipe gesture.
1489− val quoteText = remember(messageId, message.parts) {
1490− message.parts
1491− .filterIsInstance<TextPart>()
1492− .joinToString("\n\n") { it.text }
1493− .trim()
1494− .takeIf { it.isNotEmpty() }
1495− }
1496− // Swipe-start-to-end reveals a reply affordance and triggers quote-reply,
1497− // snapping back (the message isn't dismissed — the quote fills the composer).
1498− // Enabled for non-text messages too (image/tool-only), but the confirm
1499− // callback gives a haptic without triggering reply — so the user gets a
1500− // perceptible "can't quote this" signal instead of a silently dead gesture.
1501− val cantQuoteMsg = stringResource(R.string.cannot_quote_this)
1502− val undoLabel = stringResource(R.string.undo)
1503− val quoteReplyLabel = stringResource(R.string.quote_reply_banner)
1504− // Memoize the swipe confirmValueChange lambda on the message id + quoteText
1505− // so it's stable across recompositions (a fresh lambda would force the
1506− // SwipeToDismissBox to re-instantiate its state capture). quoteText is a
1507− // derived value that's stable for non-streaming messages.
1508− val swipeState = rememberSwipeToDismissBoxState(
1509− confirmValueChange = remember(messageId, quoteText) {
1510− { value ->
1511− val replyValue = if (layoutDirection == LayoutDirection.Rtl) {
1512− SwipeToDismissBoxValue.EndToStart
1513− } else {
1514− SwipeToDismissBoxValue.StartToEnd
1515− }
1516− if (value == replyValue) {
1517− if (quoteText != null) {
1518− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1519− vm.quoteReply(quoteText)
1520− runCatching { inputFocusRequester.requestFocus() }
1521− scope.launch {
1522− val res = snackbar.showSnackbar(
1523− message = quoteReplyLabel,
1524− actionLabel = undoLabel,
1525− )
1526− if (res == androidx.compose.material3.SnackbarResult.ActionPerformed) {
1527− vm.cancelQuoteReply()
1528− }
1529− }
1530− } else {
1531− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
1532− scope.launch { snackbar.showSnackbar(cantQuoteMsg) }
1533− }
1534− }
1535− false
1536− }
1537− },
1538− )
1539− // In RTL locales, mirror the swipe direction so the reply
1540− // gesture reads naturally (swipe from the trailing edge
1541− // toward the leading edge), matching how LTR users swipe
1542− // left-to-right. Without this, RTL users had no reply swipe.
1543− val replyFromStartToEnd = layoutDirection != LayoutDirection.Rtl
1544− // Memoize every MessageBubble lambda on the message id so a recomposition
1545− // triggered by a sibling (e.g. the streaming message's parts changing,
1546− // which gives `listItems` a new identity) doesn't allocate fresh lambdas
1547− // for the unchanged bubbles. MessageBubble is non-skippable (it takes
1548− // many `(() -> Unit)?` params, which Compose treats as unstable), so
1549− // without memoization every visible bubble recomposes on every token,
1550− // defeating the @Immutable MessageWithParts reference-stability the
1551− // reducer's Holder cache provides. This mirrors the SessionListScreen
1552− // per-card lambda memoization pattern.
1553− val onRevert = remember(messageId) { { vm.revertTo(messageId) } }
1554− val onEdit = remember(messageId) {
1555− { text: String ->
1556− // editMessage reverts to before this message (hiding it and
1557− // everything after); the revert banner surfaces the rewind
1558− // with an Undo. Focus + scroll the composer into view like the
1559− // Quote action so the prefilled draft isn't off-screen.
1560− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1561− vm.editMessage(messageId, text)
1562− runCatching { inputFocusRequester.requestFocus() }
1563− contentScope.launch {
1564− runCatchingCancellable {
1565− listState.animateScrollToItem(currentListItems.lastIndex.coerceAtLeast(0))
1566− }
1567− }
1568− Unit
1569− }
1570− }
1571− val onSpeak = remember(messageId) {
1572− { text: String ->
1573− if (!tts.toggle(messageId, text)) {
1574− scope.launch { snackbar.showSnackbar(ttsUnavailableMsg) }
1575− }
1576− Unit
1577− }
1578− }
1579− val onPause = remember { { tts.pause() } }
1580− val onResume = remember { { tts.resume() } }
1581− val onStop = remember { { tts.stop() } }
1582− val onQuote = remember(messageId) {
1583− { text: String ->
1584− vm.quoteReply(text)
1585− runCatching { inputFocusRequester.requestFocus() }
1586− Unit
1587− }
1588− }
1589− val onBranch = remember { { text: String -> vm.branchFrom(text); Unit } }
1590− // Regenerate is only meaningful for a finished assistant reply
1591− // (not the actively-streaming one), so gate it on !running.
1592− val onRegenerate = if (!running) {
1593− remember(messageId) { { vm.regenerate(messageId) } }
1594− } else {
1595− null
1596− }
1597− // Continue: resume a partial reply. Shown only for
1598− // incomplete assistant messages (a partial reply that
1599− // was aborted) and not while a run is active.
1600− val canContinue = !running && message.info is AssistantMessage && !message.info.isComplete
1601− val onContinue = if (canContinue) {
1602− remember(messageId) { { vm.continueRun(messageId) } }
1603− } else {
1604− null
1605− }
1606− val messageFailed = optimisticStatuses[messageId] == true
1607− val onRetry = if (messageFailed) {
1608− remember(messageId) { { vm.retryOptimisticMessage(messageId); Unit } }
1609− } else {
1610− null
1611− }
1612− val onDismiss = if (messageFailed) {
1613− remember(messageId) { { vm.dismissOptimistic(messageId) } }
1614− } else {
1615− null
1616− }
1617− val onShare = remember(messageId, sessionTitle, defaultShareSubject) {
1618− {
1619− // Per-message share: build a single-message Markdown
1620− // transcript off-thread and fire ACTION_SEND, mirroring the
1621− // whole-conversation share but scoped to just this message.
1622− scope.launch {
1623− val md = withContext(Dispatchers.Default) {
1624− buildMessageMarkdown(message)
1625− } ?: return@launch
1626− val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
1627− type = "text/markdown"
1628− putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
1629− putExtra(android.content.Intent.EXTRA_TEXT, md)
1630− }
1631− runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareContext.getString(R.string.share_message))) }
1632− .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
1633− }
1634− Unit
1635− }
1636− }
1637− SwipeToDismissBox(
1638− state = swipeState,
1639− enableDismissFromEndToStart = !replyFromStartToEnd,
1640− enableDismissFromStartToEnd = replyFromStartToEnd,
1641− backgroundContent = {
1642− Box(
1643− Modifier.fillMaxSize().padding(horizontal = 16.dp),
1644− contentAlignment = if (replyFromStartToEnd) Alignment.CenterStart else Alignment.CenterEnd,
1645− ) {
1646− Icon(
1647− Icons.AutoMirrored.Filled.Reply,
1648− contentDescription = null,
1649− tint = MaterialTheme.colorScheme.onSurfaceVariant,
1650− )
1651− }
1652− },
1653− ) {
1654− MessageBubble(
1655− message,
1656− isRunning = running && messageId == lastMessageId,
1657− imageContext = imageContext,
1658− modelLabel = modelLabel,
1659− agentLabel = agentLabel,
1660− onOpenFile = onOpenFile,
1661− onRevert = onRevert,
1662− onEdit = onEdit,
1663− onSpeak = onSpeak,
1664− isSpeaking = messageId == speakingMessageId,
1665− ttsState = if (messageId == speakingMessageId) ttsState else TtsState.IDLE,
1666− onPause = onPause,
1667− onResume = onResume,
1668− onStop = onStop,
1669− onQuote = onQuote,
1670− onBranch = onBranch,
1671− onRegenerate = onRegenerate,
1672− onContinue = onContinue,
1673− sendStatus = optimisticStatuses[messageId]?.let { failed ->
1674− if (failed) soy.iko.opencode.ui.chat.MessageSendStatus.FAILED
1675− else soy.iko.opencode.ui.chat.MessageSendStatus.SENDING
1676− },
1677− isEdited = message.info.time?.let { it.updated != null && it.updated != it.created } == true,
1678− onRetry = onRetry,
1679− onDismiss = onDismiss,
1680− onShare = onShare,
1681− isFirstOfSpeaker = item.isFirstOfSpeaker,
1682− highlighted = focusedMessageId != null && messageId == focusedMessageId,
1683− )
1684− }
1685− }
1686− }
1687− }
1688− }
1689− if (running) {
1690− item(key = "__typing") {
1691− val workingText = stringResource(R.string.working)
1692− // When the SSE stream dropped mid-run, show a "reconnecting" label
1693− // instead of the plain "working" text so the user understands the
1694− // run is still active but the stream is reconnecting (not finished).
1695− val reconnectingText = stringResource(R.string.reconnecting)
1696− val interruptedLabel = if (streamInterrupted) reconnectingText else workingText
1697− // Elapsed-since-run chip driven by the VM's runStartMs so the timer
1698− // survives LazyColumn recycling — a local remember reset to 0:00 when
1699− // the row was disposed and scrolled back into view. The VM stamps the
1700− // start on the real false→true transition (send/run/init), not on
1701− // SSE-reconnect relight, so reconnects don't restart the clock. Updates
1702− // once per second; the value is decorative (the a11y label is the row's).
1703− // The clock freezes when an abort is confirmed (aborting = true) so the
1704− // user can see how long the run lasted before they stopped it, rather
1705− // than the clock continuing to tick until SessionIdle clears _running.
1706− val startMs by vm.runStartMs.collectAsStateWithLifecycle()
1707− val elapsedMs by produceState(0L, startMs, aborting) {
1708− if (startMs == 0L) return@produceState
1709− if (aborting) {
1710− // Freeze at the last-computed value: one final snapshot then stop.
1711− value = (System.currentTimeMillis() - startMs).coerceAtLeast(0L)
1712− return@produceState
1713− }
1714− while (true) {
1715− value = (System.currentTimeMillis() - startMs).coerceAtLeast(0L)
1716− delay(1000)
1717− }
1718− }
1719− val elapsedText = remember(elapsedMs) {
1720− val total = elapsedMs / 1000
1721− // Locale.US for stable digit formatting: on locales with
1722− // non-ASCII digits (ar-/fa-) the default locale would render
1723− // localized digits inside the Monospace block, breaking the
1724− // fixed-width alignment the monospace family was chosen for.
1725− String.format(java.util.Locale.US, "%d:%02d", total / 60, total % 60)
1726− }
1727− Row(
1728− verticalAlignment = Alignment.CenterVertically,
1729− // Animate this slot in/out so the working row doesn't pop in and
1730− // jolt the message list when a run starts/stops — matching the
1731− // AnimatedVisibility used by every other transient banner/FAB here.
1732− modifier = Modifier
1733− .then(reducedMotionAnimateItem())
1734− .padding(vertical = 4.dp),
1735− ) {
1736− // Merge the indicator + label + clock into one TalkBack node so
1737− // it's announced once (the working label, then the elapsed time)
1738− // instead of "working… / working… / 0:14" with the label read
1739− // twice. The Stop IconButton below stays separately focusable.
1740− Row(
1741− verticalAlignment = Alignment.CenterVertically,
1742− modifier = Modifier.semantics(mergeDescendants = true) {
1743− contentDescription = "$interruptedLabel $elapsedText"
1744− },
1745− ) {
1746− // Dim the spinner when interrupted so the row reads as
1747− // "paused/reconnecting" rather than actively progressing.
1748− CircularProgressIndicator(
1749− Modifier.size(16.dp),
1750− strokeWidth = 2.dp,
1751− color = if (streamInterrupted) MaterialTheme.colorScheme.onSurfaceVariant
1752− else MaterialTheme.colorScheme.primary,
1753− )
1754− Text(interruptedLabel, style = MaterialTheme.typography.labelMedium, modifier = Modifier.padding(start = 6.dp))
1755− Spacer(Modifier.size(8.dp))
1756− Icon(
1757− Icons.Filled.Schedule,
1758− contentDescription = null,
1759− modifier = Modifier.size(14.dp),
1760− tint = MaterialTheme.colorScheme.onSurfaceVariant,
1761− )
1762− Text(
1763− elapsedText,
1764− style = MaterialTheme.typography.labelMedium,
1765− fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
1766− color = MaterialTheme.colorScheme.onSurfaceVariant,
1767− modifier = Modifier.padding(start = 4.dp),
1768− )
1769− }
1770− // A trailing Stop on the working row so the run can be aborted
1771− // without scrolling back to the composer (which may be off-screen
1772− // while the user reads the streaming output up-thread).
1773− Spacer(Modifier.weight(1f))
1774− val stopLabel = stringResource(R.string.stop)
1775− IconButton(
1776− onClick = { vm.abort() },
1777− modifier = Modifier.semantics { contentDescription = stopLabel },
1778− ) {
1779− Icon(Icons.Filled.Stop, contentDescription = null)
1780− }
1781− }
1782− }
1783− }
1784− }
1785− }
1786− }
1787− }
1788− // Jump-to-latest affordance when the user has scrolled away during a stream.
1789− val fabMotion = rememberVisibilityTransitions()
1790− AnimatedVisibility(
1791− visible = !isPinnedToBottom && listItems.isNotEmpty(),
1792− enter = fabMotion.enter,
1793− exit = fabMotion.exit,
1794− // Inset by sideMargin on wide screens so the FAB tracks the capped list's
1795− // edge instead of floating at the screen edge (visually detached on tablets).
1796− modifier = Modifier.align(Alignment.BottomEnd).padding(end = sideMargin),
1797− ) {
1798− // Badge the FAB when new content arrived while the user was scrolled up, so
1799− // they know there's something new to jump to (cleared once back at bottom).
1800− BadgedBox(
1801− badge = {
1802− if (newContentCount > 0) {
1803− // Merge the count into the badge announcement so TalkBack reads
1804− // "5 new messages" instead of the bare label and a separate number.
1805− val newContentLabel = pluralStringResource(
1806− R.plurals.plurals_new_messages,
1807− newContentCount,
1808− newContentCount,
1809− )
1810− Badge(
1811− modifier = Modifier.semantics {
1812− contentDescription = newContentLabel
1813− // Announce new-content counts as they change so a
1814− // TalkBack user hears "5 new messages" without having
1815− // to focus the FAB. Polite so it doesn't interrupt an
1816− // in-progress utterance (e.g. streaming token reads).
1817− liveRegion = androidx.compose.ui.semantics.LiveRegionMode.Polite
1818− },
1819− ) {
1820− Text(
1821− if (newContentCount > 99) "99+" else newContentCount.toString(),
1822− modifier = Modifier.semantics { invisibleToUser() },
1823− )
1824− }
1825− }
1826− },
1827− modifier = Modifier.padding(end = 16.dp, bottom = 16.dp),
1828− ) {
1829− ExtendedFloatingActionButton(
1830− onClick = {
1831− newContentCount = 0
1832− if (listItems.isNotEmpty()) {
1833− // Scroll to the effective last index, including the
1834− // trailing "__typing" row when a run is active.
1835− val target = if (running) listItems.size else listItems.lastIndex
1836− contentScope.launch { runCatchingCancellable { listState.animateScrollToItem(target) } }
1837− }
1838− },
1839− // contentDescription null: the visible "Latest" text already labels
1840− // the FAB, so a description here makes TalkBack announce "Latest" twice.
1841− icon = { Icon(Icons.Filled.KeyboardArrowDown, contentDescription = null) },
1842− text = { Text(stringResource(R.string.latest)) },
1843− )
1844− }
1845− }
1846− // Scroll-to-top affordance: a small FAB at the start edge, visible when the
1847− // user has scrolled down past the first few messages. Symmetric to the
1848− // jump-to-latest FAB, for long conversations where manual fling back is tedious.
1849− val scrolledDown by remember {
1850− derivedStateOf { listState.firstVisibleItemIndex > 0 || listState.firstVisibleItemScrollOffset > 200 }
1851− }
1852− AnimatedVisibility(
1853− visible = scrolledDown && listItems.size > 4,
1854− enter = fabMotion.enter,
1855− exit = fabMotion.exit,
1856− modifier = Modifier.align(Alignment.BottomStart).padding(start = sideMargin),
1857− ) {
1858− SmallFloatingActionButton(
1859− onClick = {
1860− contentScope.launch { runCatchingCancellable { listState.animateScrollToItem(0) } }
1861− },
1862− modifier = Modifier.padding(start = 16.dp, bottom = 16.dp),
1863− ) {
1864− Icon(
1865− Icons.Filled.KeyboardArrowUp,
1866− contentDescription = stringResource(R.string.scroll_to_top),
1867− )
1868− }
1869− }
1870− // In-conversation search bar. Overlays the list so typing filters messages in
1871− // place; the match count + a no-matches note give immediate feedback.
1872− val searchMotion = rememberVisibilityTransitions()
1873− AnimatedVisibility(
1874− visible = searchActive,
1875− enter = searchMotion.enter,
1876− exit = searchMotion.exit,
1877− // Inset by sideMargin on wide screens so the search bar spans the capped
1878− // list's width, not the full screen width.
1879− modifier = Modifier.align(Alignment.TopCenter).padding(horizontal = sideMargin),
1880− ) {
1881− Surface(
1882− tonalElevation = 3.dp,
1883− modifier = Modifier
1884− .padding(horizontal = 12.dp, vertical = 4.dp)
1885− .fillMaxWidth()
1886− .onSizeChanged { searchbarHeightPx = it.height },
1887− ) {
1888− // Focus the search field when the bar appears (from the overflow menu's
1889− // "Find in conversation" or Ctrl+F), so the user can start typing
1890− // immediately. Runs after the search field enters the composition.
1891− LaunchedEffect(searchActive) {
1892− if (searchActive) runCatching { searchFocusRequester.requestFocus() }
1893− }
1894− Row(
1895− modifier = Modifier.padding(start = 8.dp, end = 4.dp),
1896− verticalAlignment = Alignment.CenterVertically,
1897− ) {
1898− OutlinedTextField(
1899− value = chatSearch,
1900− onValueChange = { chatSearch = it },
1901− modifier = Modifier.weight(1f).focusRequester(searchFocusRequester),
1902− placeholder = { Text(stringResource(R.string.search_in_conversation)) },
1903− singleLine = true,
1904− leadingIcon = { Icon(Icons.Filled.Search, contentDescription = null) },
1905− keyboardOptions = KeyboardOptions(imeAction = ImeAction.Search),
1906− )
1907− // Match counter: "N of M" where N is the focused match (1-based) and
1908− // M is the total matching messages. Only shown when there's a query.
1909− val matchCount = searchMessages.size
1910− Text(
1911− if (searchQuery.isNotEmpty() && matchCount > 0) {
1912− stringResource(R.string.search_match_count, searchPos + 1, matchCount)
1913− } else if (searchQuery.isNotEmpty()) {
1914− stringResource(R.string.search_no_matches)
1915− } else "",
1916− style = MaterialTheme.typography.labelSmall,
1917− color = MaterialTheme.colorScheme.onSurfaceVariant,
1918− modifier = Modifier
1919− .padding(horizontal = 4.dp)
1920− // Live region so a TalkBack user hears "3 of 12" / "No
1921− // matches" announce as they step through results, not just
1922− // the sighted user seeing the counter update.
1923− .semantics { liveRegion = androidx.compose.ui.semantics.LiveRegionMode.Polite },
1924− )
1925− // Step through matches (Previous / Next), disabled when there are
1926− // fewer than two to navigate. Wrap around at the ends so repeated
1927− // taps cycle through every hit.
1928− val prevLabel = stringResource(R.string.find_previous)
1929− val nextLabel = stringResource(R.string.find_next)
1930− IconButton(
1931− onClick = {
1932− if (matchCount > 0) {
1933− searchPos = (searchPos - 1 + matchCount) % matchCount
1934− }
1935− },
1936− enabled = matchCount > 1,
1937− ) {
1938− Icon(Icons.Filled.KeyboardArrowUp, contentDescription = prevLabel)
1939− }
1940− IconButton(
1941− onClick = {
1942− if (matchCount > 0) {
1943− searchPos = (searchPos + 1) % matchCount
1944− }
1945− },
1946− enabled = matchCount > 1,
1947− ) {
1948− Icon(Icons.Filled.KeyboardArrowDown, contentDescription = nextLabel)
1949− }
1950− IconButton(onClick = {
1951− searchActive = false
1952− chatSearch = ""
1953− }) {
1954− Icon(Icons.Filled.Close, contentDescription = stringResource(R.string.clear_search))
1955− }
1956− }
1957− }
1958− }
1959− // When a search yields no matches (but the conversation isn't empty), say so
1960− // instead of showing a blank list.
1961− if (searchActive && searchQuery.isNotEmpty() && searchMessages.isEmpty() && messages.isNotEmpty()) {
1962− Text(
1963− stringResource(R.string.search_no_matches),
1964− style = MaterialTheme.typography.bodyMedium,
1965− color = MaterialTheme.colorScheme.onSurfaceVariant,
1966− modifier = Modifier.align(Alignment.Center),
1967− )
1968− }
1969− }
1970− }
1971− }
1972− }
1973−
1974− if (showExitConfirm) {
1975− AlertDialog(
1976− onDismissRequest = { showExitConfirm = false },
1977− title = { Text(stringResource(R.string.stop_and_exit_title)) },
1978− text = { Text(stringResource(R.string.stop_and_exit_text)) },
1979− confirmButton = {
1980− TextButton(onClick = {
1981− showExitConfirm = false
1982− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1983− vm.abort()
1984− onBack()
1985− }) { Text(stringResource(R.string.stop_and_exit)) }
1986− },
1987− dismissButton = {
1988− TextButton(onClick = { showExitConfirm = false }) { Text(stringResource(R.string.stay)) }
1989− },
1990− )
1991− }
1992−
1993− if (showSummarizeConfirm) {
1994− AlertDialog(
1995− onDismissRequest = { showSummarizeConfirm = false },
1996− title = { Text(stringResource(R.string.summarize_confirm_title)) },
1997− text = { Text(stringResource(R.string.summarize_confirm_text)) },
1998− confirmButton = {
1999− TextButton(onClick = {
2000− showSummarizeConfirm = false
2001− vm.summarize()
2002− }) { Text(stringResource(R.string.action_continue)) }
2003− },
2004− dismissButton = {
2005− TextButton(onClick = { showSummarizeConfirm = false }) { Text(stringResource(R.string.cancel)) }
2006− },
2007− )
2008− }
2009−
2010− if (showInitConfirm) {
2011− AlertDialog(
2012− onDismissRequest = { showInitConfirm = false },
2013− title = { Text(stringResource(R.string.init_confirm_title)) },
2014− text = { Text(stringResource(R.string.init_confirm_text)) },
2015− confirmButton = {
2016− TextButton(onClick = {
2017− showInitConfirm = false
2018− vm.initProject()
2019− }) { Text(stringResource(R.string.action_continue)) }
2020− },
2021− dismissButton = {
2022− TextButton(onClick = { showInitConfirm = false }) { Text(stringResource(R.string.cancel)) }
2023− },
2024− )
2025− }
2026−
2027− if (showRenameDialog) {
2028− RenameSessionChatDialog(
2029− initialTitle = sessionTitle ?: "",
2030− onDismiss = { showRenameDialog = false },
2031− onConfirm = { newName ->
2032− showRenameDialog = false
2033− vm.renameSession(newName)
2034− },
2035− )
2036− }
2037−
2038− if (showDeleteDialog) {
2039− AlertDialog(
2040− onDismissRequest = { showDeleteDialog = false },
2041− title = { Text(stringResource(R.string.delete_session_chat_title)) },
2042− text = { Text(stringResource(R.string.delete_session_chat_text, sessionTitle ?: sessionLabel)) },
2043− confirmButton = {
2044− TextButton(onClick = {
2045− showDeleteDialog = false
2046− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
2047− vm.deleteSession()
2048− }) { Text(stringResource(R.string.delete), color = MaterialTheme.colorScheme.error) }
2049− },
2050− dismissButton = {
2051− TextButton(onClick = { showDeleteDialog = false }) { Text(stringResource(R.string.cancel)) }
2052− },
2053− )
2054− }
2055−
2056− if (showShellDialog) {
2057− ShellCommandDialog(
2058− onDismiss = { showShellDialog = false },
2059− onRun = { cmd ->
2060− showShellDialog = false
2061− vm.runShell(cmd)
2062− },
2063− )
2064− }
2065−
2066− if (showModelPicker) {
2067− // Resolve persisted recent composite keys to the live ModelOption entries they refer
2068− // to, dropping any whose model is no longer offered by the server. Ordered by
2069− // recency (head of the store first).
2070− val recentOptions = remember(models, recentModelEntries) {
2071− val byKey = models.associateBy { it.providerID to it.modelID }
2072− recentModelEntries.mapNotNull { entry ->
2073− container.recentModelsStore.split(entry)?.let { (p, m) -> byKey[p to m] }
2074− }
2075− }
2076− // Resolve snackbar strings in the composable scope; the onSetPreferredModel lambda
2077− // below isn't @Composable, so stringResource can't be called inside it.
2078− val defaultModelClearedMsg = stringResource(R.string.default_model_cleared)
2079− val defaultModelSetFmt = stringResource(R.string.default_model_set, "%s")
2080− ModelPickerSheet(
2081− options = models,
2082− selected = selectedModel,
2083− loading = modelsLoading,
2084− error = modelsError,
2085− onSelect = {
2086− vm.selectModel(it)
2087− container.recentModelsStore.add(it.providerID, it.modelID)
2088− },
2089− onRetry = { vm.reloadModels() },
2090− onDismiss = { showModelPicker = false },
2091− preferredModelId = preferredModelId,
2092− onSetPreferredModel = { id ->
2093− scope.launch {
2094− runCatchingCancellable { container.settingsStore.setPreferredModelId(id) }
2095− // Confirm the change with a snackbar so the user sees it took effect —
2096− // the toggle's label flip can be missed, especially when clearing.
2097− val msg = if (id.isEmpty()) {
2098− defaultModelClearedMsg
2099− } else {
2100− val label = models.firstOrNull { it.modelID == id }?.modelLabel ?: id
2101− defaultModelSetFmt.format(label)
2102− }
2103− snackbar.showSnackbar(msg)
2104− }
2105− },
2106− recent = recentOptions,
2107− )
2108− }
2109−
2110− if (showAgentPicker) {
2111− AgentPickerSheet(
2112− agents = agents,
2113− selected = selectedAgent,
2114− loading = agentsLoading,
2115− error = agentsError,
2116− onSelect = { vm.selectAgent(it?.name) },
2117− onRetry = { vm.reloadAgents() },
2118− onDismiss = { showAgentPicker = false },
2119− )
2120− }
2121−
2122− if (showCommandPicker) {
2123− CommandPickerSheet(
2124− commands = commands,
2125− loading = commandsLoading,
2126− error = commandsError,
2127− onSelect = { vm.runCommand(it) },
2128− onRetry = { vm.reloadCommands() },
2129− onDismiss = { showCommandPicker = false },
2130− )
2131− }
2132−
2133− pendingPermission?.let { permission ->
2134− PermissionDialog(
2135− permission = permission,
2136− position = permissionProgress.position,
2137− total = permissionProgress.total,
2138− onRespond = { response -> vm.respondPermission(permission, response) },
2139− // On auto-reject timeout, post a notification so a returning user finds a
2140− // persistent record of why the run stopped (the dialog itself is gone).
2141− // Gated by the user's notification setting (notifPermission).
2142− onAutoReject = {
2143− val conn = activeConnection
2144− val ctx = appContext
2145− val title = sessionTitle ?: sessionId
2146− if (notifPermission) {
2147− soy.iko.opencode.notification.SessionNotifications.postPermissionAutoRejected(
2148− ctx, sessionId, title, conn?.profile?.id,
2149− )
2150− }
2151− },
2152− )
2153− }
2154−
2155− if (showPalette) {
2156− CommandPalette(actions = paletteActions, onDismiss = { showPalette = false })
2157− }
2158−
2159− if (showShortcutsDialog) {
2160− // Surfaces the hardware-keyboard shortcuts (Ctrl+K palette, Escape stop, Enter send)
2161− // that are otherwise wired but undiscoverable. A simple key/value list; Enter behavior
2162− // depends on the "Send on Enter" setting, noted inline.
2163− AlertDialog(
2164− onDismissRequest = { showShortcutsDialog = false },
2165− title = { Text(stringResource(R.string.keyboard_shortcuts_title)) },
2166− text = {
2167− Column(verticalArrangement = Arrangement.spacedBy(10.dp)) {
2168− ShortcutRow("Ctrl + K", stringResource(R.string.shortcut_open_palette))
2169− ShortcutRow("Esc", stringResource(R.string.shortcut_stop_run))
2170− ShortcutRow("Esc", stringResource(R.string.shortcut_close))
2171− ShortcutRow("Enter", stringResource(R.string.shortcut_send))
2172− ShortcutRow("Shift + Enter / Ctrl + Enter", stringResource(R.string.shortcut_newline))
2173− }
2174− },
2175− confirmButton = {
2176− TextButton(onClick = { showShortcutsDialog = false }) { Text(stringResource(R.string.action_continue)) }
2177− },
2178− )
2179− }
2180−}
2181−
2182−@Composable
2183−private fun ShortcutRow(keys: String, desc: String) {
2184− Row(verticalAlignment = Alignment.CenterVertically) {
2185− Text(
2186− keys,
2187− style = MaterialTheme.typography.labelLarge,
2188− fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
2189− modifier = Modifier.widthIn(min = 160.dp),
2190− )
2191− Text(
2192− desc,
2193− style = MaterialTheme.typography.bodyMedium,
2194− color = MaterialTheme.colorScheme.onSurfaceVariant,
2195− )
2196− }
2197−}
2198−
2199−/**
2200− * Slash-command autocomplete: when the draft starts with "/", show a filtered dropdown
2201− * of matching commands above the composer. Tapping a command fires it immediately.
2202− * Extracted from [ChatInputBar] to keep that function's cyclomatic complexity under
2203− * the detekt threshold. Suppressed while running or when the command catalog is empty.
2204− */
2205−@Composable
2206−private fun SlashCommandAutocomplete(
2207− value: String,
2208− commands: List<Command>,
2209− running: Boolean,
2210− onRunCommand: (Command) -> Unit,
2211−) {
2212− if (running || commands.isEmpty()) return
2213− val slashQuery = remember(value) {
2214− if (value.startsWith("/")) value.removePrefix("/") else null
2215− } ?: return
2216− val matchingCommands = remember(slashQuery, commands) {
2217− commands.filter { cmd ->
2218− slashQuery.isEmpty() ||
2219− cmd.name.contains(slashQuery, ignoreCase = true) ||
2220− (cmd.description?.contains(slashQuery, ignoreCase = true) == true)
2221− }.take(8)
2222− }
2223− if (matchingCommands.isNotEmpty()) {
2224− CommandAutocompleteDropdown(
2225− commands = matchingCommands,
2226− onPick = onRunCommand,
2227− )
2228− }
2229−}
2230−
2231−/**
2232− * Slash-command autocomplete dropdown shown above the composer when the draft starts
2233− * with "/". Renders up to 8 matching commands as a scrollable, elevated surface so the
2234− * user can discover and invoke commands by typing the conventional "/" prefix instead
2235− * of opening the overflow menu / command palette. Tapping a row fires the command.
2236− */
2237−@Composable
2238−private fun CommandAutocompleteDropdown(
2239− commands: List<Command>,
2240− onPick: (Command) -> Unit,
2241−) {
2242− val haptics = LocalHapticFeedback.current
2243− Surface(
2244− color = MaterialTheme.colorScheme.surface,
2245− tonalElevation = 3.dp,
2246− shape = MaterialTheme.shapes.medium,
2247− modifier = Modifier
2248− .fillMaxWidth()
2249− .padding(horizontal = 8.dp, vertical = 4.dp)
2250− .heightIn(max = 240.dp),
2251− ) {
2252− LazyColumn {
2253− items(
2254− count = commands.size,
2255− key = { commands[it].name },
2256− ) { i ->
2257− val cmd = commands[i]
2258− Row(
2259− modifier = Modifier
2260− .fillMaxWidth()
2261− .clickable(role = Role.Button) {
2262− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2263− onPick(cmd)
2264− }
2265− .padding(horizontal = 16.dp, vertical = 10.dp),
2266− verticalAlignment = Alignment.CenterVertically,
2267− horizontalArrangement = Arrangement.spacedBy(12.dp),
2268− ) {
2269− Text(
2270− "/${cmd.name}",
2271− style = MaterialTheme.typography.labelLarge,
2272− fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
2273− color = MaterialTheme.colorScheme.primary,
2274− )
2275− cmd.description?.takeIf { it.isNotBlank() }?.let { desc ->
2276− Text(
2277− desc,
2278− style = MaterialTheme.typography.bodySmall,
2279− color = MaterialTheme.colorScheme.onSurfaceVariant,
2280− maxLines = 1,
2281− overflow = TextOverflow.Ellipsis,
2282− )
2283− }
2284− }
2285− }
2286− }
2287− }
2288−}
2289−
2290−@OptIn(androidx.compose.foundation.ExperimentalFoundationApi::class)
2291−@Suppress("CyclomaticComplexMethod")
2292−@Composable
2293−private fun ChatInputBar(
2294− value: String,
2295− onValueChange: (String) -> Unit,
2296− running: Boolean,
2297− aborting: Boolean,
2298− enabled: Boolean,
2299− sendOnEnter: Boolean,
2300− onSend: () -> Unit,
2301− onAbort: () -> Unit,
2302− queuedFollowUp: String?,
2303− onQueueFollowUp: (String) -> Unit,
2304− onCancelQueue: () -> Unit,
2305− focusRequester: androidx.compose.ui.focus.FocusRequester,
2306− attachments: List<PendingAttachment>,
2307− staging: Boolean,
2308− stagingFileCount: Int,
2309− onRemoveAttachment: (String) -> Unit,
2310− onPickPhoto: () -> Unit,
2311− onPickFile: () -> Unit,
2312− onCamera: () -> Unit,
2313− onVoice: () -> Unit,
2314− onPasteImage: (List<Uri>) -> Unit,
2315− commands: List<Command> = emptyList(),
2316− onRunCommand: (Command) -> Unit = {},
2317−) {
2318− // Sendable when there's text OR at least one attachment (an image-only prompt is valid).
2319− val hasContent = value.isNotBlank() || attachments.isNotEmpty()
2320− val context = LocalContext.current
2321− // Full-screen editor state: opened when the user wants more space for a long prompt.
2322− var showFullScreenEditor by rememberSaveable { mutableStateOf(false) }
2323− Surface(tonalElevation = 3.dp, modifier = Modifier.imePadding()) {
2324− Column(modifier = Modifier.fillMaxWidth().windowInsetsPadding(WindowInsets.navigationBars)) {
2325− // A queued follow-up replaces the Stop button with a "queued" chip so the
2326− // user sees their message will be sent when the run finishes, and can cancel.
2327− if (queuedFollowUp != null) {
2328− val editLabel = stringResource(R.string.edit)
2329− Row(
2330− modifier = Modifier
2331− .fillMaxWidth()
2332− .padding(start = 12.dp, top = 6.dp, end = 4.dp),
2333− verticalAlignment = Alignment.CenterVertically,
2334− ) {
2335− // Tapping the chip reloads the queued text into the draft (and clears the
2336− // queue) so a typo spotted while queuing can be fixed without retyping.
2337− Column(
2338− modifier = Modifier
2339− .weight(1f)
2340− .clip(MaterialTheme.shapes.small)
2341− .clickable(role = Role.Button, onClickLabel = editLabel) {
2342− onValueChange(queuedFollowUp)
2343− onCancelQueue()
2344− }
2345− .padding(vertical = 4.dp),
2346− ) {
2347− Text(
2348− stringResource(R.string.queued),
2349− style = MaterialTheme.typography.labelSmall,
2350− color = MaterialTheme.colorScheme.onSurfaceVariant,
2351− )
2352− Text(
2353− queuedFollowUp,
2354− style = MaterialTheme.typography.bodySmall,
2355− color = MaterialTheme.colorScheme.onSurfaceVariant,
2356− maxLines = 1,
2357− overflow = TextOverflow.Ellipsis,
2358− )
2359− }
2360− TextButton(onClick = onCancelQueue, contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = 8.dp)) {
2361− Text(stringResource(R.string.cancel))
2362− }
2363− }
2364− }
2365− // Staged attachments: horizontally-scrollable thumbnails/chips, each removable.
2366− AttachmentStrip(attachments, onRemove = onRemoveAttachment, staging = staging, stagingFileCount = stagingFileCount)
2367− // Slash-command autocomplete: extracted to a helper to keep this function's
2368− // complexity under the detekt threshold. Returns no-op when the draft doesn't
2369− // start with "/" or the command catalog is empty.
2370− SlashCommandAutocomplete(
2371− value = value,
2372− commands = commands,
2373− running = running,
2374− onRunCommand = onRunCommand,
2375− )
2376− Row(
2377− modifier = Modifier.fillMaxWidth().padding(8.dp),
2378− verticalAlignment = Alignment.Bottom,
2379− ) {
2380− // Attach menu: photo picker, camera, or any file.
2381− var showAttachMenu by remember { mutableStateOf(false) }
2382− Box {
2383− IconButton(onClick = { showAttachMenu = true }, enabled = enabled) {
2384− Icon(Icons.Filled.Add, contentDescription = stringResource(R.string.add_attachment))
2385− }
2386− DropdownMenu(expanded = showAttachMenu, onDismissRequest = { showAttachMenu = false }) {
2387− DropdownMenuItem(
2388− leadingIcon = { Icon(Icons.Filled.PhotoLibrary, contentDescription = null) },
2389− text = { Text(stringResource(R.string.attach_photo)) },
2390− onClick = { showAttachMenu = false; onPickPhoto() },
2391− )
2392− DropdownMenuItem(
2393− leadingIcon = { Icon(Icons.Filled.PhotoCamera, contentDescription = null) },
2394− text = { Text(stringResource(R.string.attach_camera)) },
2395− onClick = { showAttachMenu = false; onCamera() },
2396− )
2397− DropdownMenuItem(
2398− leadingIcon = { Icon(Icons.Filled.Description, contentDescription = null) },
2399− text = { Text(stringResource(R.string.attach_file)) },
2400− onClick = { showAttachMenu = false; onPickFile() },
2401− )
2402− }
2403− }
2404− // Voice dictation: appends recognized speech to the draft. Hidden (not just
2405− // disabled) when the device has no speech-recognition activity, so a user
2406− // without a voice app doesn't get a button that only fails noisily on tap.
2407− val voiceAvailable = remember {
2408− val pm = context.packageManager
2409− val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
2410− pm.queryIntentActivities(intent, 0).isNotEmpty()
2411− }
2412− if (voiceAvailable) {
2413− IconButton(onClick = onVoice, enabled = enabled) {
2414− Icon(Icons.Filled.Mic, contentDescription = stringResource(R.string.voice_input))
2415− }
2416− }
2417− // Expand to a full-screen editor for long prompts (the inline field caps at 6 lines).
2418− IconButton(onClick = { showFullScreenEditor = true }, enabled = enabled) {
2419− Icon(Icons.Filled.Expand, contentDescription = stringResource(R.string.expand_editor))
2420− }
2421− OutlinedTextField(
2422− value = value,
2423− onValueChange = { v ->
2424− // Cap input length so a huge paste can't stall the UI. Shares are
2425− // capped separately in MainActivity; this guards typed/pasted drafts.
2426− onValueChange(v.take(NetworkConfig.maxDraftLengthChars))
2427− },
2428− modifier = Modifier
2429− .weight(1f)
2430− .focusRequester(focusRequester)
2431− .testTag("chat_input")
2432− // Intercept image content pasted/dropped into the field (keyboard paste
2433− // of a copied screenshot, drag from Files, etc.) and route it through the
2434− // same staging path as the attach menu. Non-image content (text) falls
2435− // through unchanged so normal typing/paste works.
2436− .contentReceiver(
2437− remember {
2438− androidx.compose.foundation.content.ReceiveContentListener { transferable ->
2439− val clipData = transferable.clipEntry?.clipData
2440− if (clipData != null) {
2441− val imageUris = (0 until clipData.itemCount).mapNotNull { i ->
2442− val item = clipData.getItemAt(i)
2443− item.uri?.takeIf { uri ->
2444− item.text == null && uri.toString().let { s ->
2445− s.startsWith("content:") || s.startsWith("file:")
2446− }
2447− }
2448− }
2449− if (imageUris.isNotEmpty()) {
2450− onPasteImage(imageUris)
2451− }
2452− }
2453− transferable
2454− }
2455− },
2456− )
2457− .onPreviewKeyEvent { event ->
2458− if (event.type != KeyEventType.KeyDown || event.key != Key.Enter) return@onPreviewKeyEvent false
2459− // With "Send on Enter" on, Enter sends (Shift+Enter newlines).
2460− // With it off, Enter inserts a newline and Ctrl+Enter sends.
2461− val send = enterShouldSend(
2462− enabled = enabled,
2463− hasContent = hasContent,
2464− sendOnEnter = sendOnEnter,
2465− shift = event.isShiftPressed,
2466− ctrl = event.isCtrlPressed,
2467− )
2468− if (send) {
2469− if (running) onQueueFollowUp(value) else onSend()
2470− true
2471− } else {
2472− false
2473− }
2474− },
2475− // While a run is active a typed message only queues (sends after the run), so
2476− // the placeholder says so instead of the plain "Message…".
2477− placeholder = {
2478− Text(stringResource(if (running) R.string.composer_hint_running else R.string.message_placeholder))
2479− },
2480− enabled = enabled,
2481− maxLines = 6,
2482− // Show a "N / max" countdown once the draft crosses a high fraction of
2483− // the cap, so the user knows a paste is about to be truncated instead
2484− // of being silently cut off. Hidden for normal short prompts to avoid
2485− // clutter under a typical one-line message.
2486− supportingText = {
2487− val threshold = (NetworkConfig.maxDraftLengthChars * NetworkConfig.draftCountdownThresholdFraction).toInt()
2488− if (value.length >= threshold) {
2489− Text(
2490− stringResource(
2491− R.string.draft_chars_remaining,
2492− NetworkConfig.maxDraftLengthChars - value.length,
2493− NetworkConfig.maxDraftLengthChars,
2494− ),
2495− style = MaterialTheme.typography.labelSmall,
2496− color = if (value.length >= NetworkConfig.maxDraftLengthChars) MaterialTheme.colorScheme.error
2497− else MaterialTheme.colorScheme.onSurfaceVariant,
2498− )
2499− } else if (value.lines().size > 6) {
2500− // The inline field caps at 6 lines; once the draft crosses that,
2501− // hint that a bigger full-screen editor exists (the Expand icon
2502− // above is easy to miss among the icon row). A tappable label
2503− // would be ideal, but a plain hint is enough to draw attention.
2504− Text(
2505− stringResource(R.string.open_full_editor_hint),
2506− style = MaterialTheme.typography.labelSmall,
2507− color = MaterialTheme.colorScheme.onSurfaceVariant,
2508− )
2509− }
2510− },
2511− keyboardOptions = KeyboardOptions(
2512− // When "Send on Enter" is on, expose ImeAction.Send so the soft
2513− // keyboard shows a send key — matching the setting's intent and
2514− // giving touch-only users a keyboard send affordance. When off,
2515− // ImeAction.Default keeps the enter/newline key for multi-line input.
2516− imeAction = if (sendOnEnter) ImeAction.Send else ImeAction.Default,
2517− capitalization = KeyboardCapitalization.Sentences,
2518− ),
2519− keyboardActions = KeyboardActions(
2520− onSend = {
2521− // Mirror the hardware-Enter handler: during a run the soft-keyboard
2522− // send key must queue the follow-up, not silently drop it. vm.send()
2523− // returns false while a run is active (beginRun() rejects), so calling
2524− // onSend() directly here would lose the typed message with no feedback
2525− // for touch-only users (no hardware Enter path available).
2526− if (enabled && hasContent) {
2527− if (running) onQueueFollowUp(value) else onSend()
2528− }
2529− },
2530− ),
2531− )
2532− ComposerTrailingButton(
2533− running = running,
2534− aborting = aborting,
2535− canSend = enabled && hasContent,
2536− canQueue = enabled && value.isNotBlank(),
2537− onSend = onSend,
2538− onAbort = onAbort,
2539− onQueue = { onQueueFollowUp(value) },
2540− )
2541− }
2542− }
2543− if (showFullScreenEditor) {
2544− FullScreenEditor(
2545− value = value,
2546− onValueChange = onValueChange,
2547− onDismiss = { showFullScreenEditor = false },
2548− onSend = {
2549− showFullScreenEditor = false
2550− // Mirror the inline composer's behavior: while a run is active a send
2551− // can't go immediately, so queue the follow-up instead of silently
2552− // dropping it (vm.send() returns false during a run, which previously
2553− // lost the typed message with no feedback).
2554− if (running) onQueueFollowUp(value) else onSend()
2555− },
2556− canSend = enabled && hasContent,
2557− running = running,
2558− sendOnEnter = sendOnEnter,
2559− attachments = attachments,
2560− onRemoveAttachment = onRemoveAttachment,
2561− staging = staging,
2562− stagingFileCount = stagingFileCount,
2563− )
2564− }
2565− }
2566−}
2567−
2568−/** Full-screen editor dialog for composing long prompts. Gives the full viewport height to
2569− * the text field (vs the inline 6-line cap) with a Send button and a collapse action. */
2570−@OptIn(ExperimentalMaterial3Api::class)
2571−@Composable
2572−private fun FullScreenEditor(
2573− value: String,
2574− onValueChange: (String) -> Unit,
2575− onDismiss: () -> Unit,
2576− onSend: () -> Unit,
2577− canSend: Boolean,
2578− running: Boolean = false,
2579− sendOnEnter: Boolean = false,
2580− attachments: List<PendingAttachment> = emptyList(),
2581− onRemoveAttachment: (String) -> Unit = {},
2582− staging: Boolean = false,
2583− stagingFileCount: Int = 0,
2584−) {
2585− androidx.compose.ui.window.Dialog(
2586− onDismissRequest = onDismiss,
2587− properties = androidx.compose.ui.window.DialogProperties(usePlatformDefaultWidth = false, decorFitsSystemWindows = false),
2588− ) {
2589− // Cap the editor width on large screens (tablets) so the text field doesn't stretch
2590− // edge-to-edge — matching the chat list's readability rationale. BoxWithConstraints
2591− // gives the available width so we can center a capped-width column.
2592− androidx.compose.foundation.layout.BoxWithConstraints(
2593− modifier = Modifier.fillMaxSize(),
2594− contentAlignment = Alignment.Center,
2595− ) {
2596− val hPad = if (maxWidth > NetworkConfig.twoPaneWidthThresholdDp.dp)
2597− ((maxWidth - NetworkConfig.composerDialogMaxWidthDp.dp) / 2).coerceAtLeast(0.dp)
2598− else 0.dp
2599− Scaffold(
2600− modifier = Modifier.padding(horizontal = hPad),
2601− topBar = {
2602− androidx.compose.material3.TopAppBar(
2603− title = { Text(stringResource(R.string.compose_editor_title)) },
2604− navigationIcon = {
2605− androidx.compose.material3.TextButton(onClick = onDismiss) {
2606− Text(stringResource(R.string.collapse_editor))
2607− }
2608− },
2609− )
2610− },
2611− bottomBar = {
2612− Surface(tonalElevation = 3.dp) {
2613− Row(
2614− modifier = Modifier.fillMaxWidth().imePadding().padding(12.dp),
2615− horizontalArrangement = Arrangement.End,
2616− ) {
2617− androidx.compose.material3.Button(onClick = onSend, enabled = canSend) {
2618− Text(stringResource(if (running) R.string.queue else R.string.send))
2619− }
2620− }
2621− }
2622− },
2623− ) { padding ->
2624− Column(modifier = Modifier.fillMaxSize().padding(padding)) {
2625− // Show staged attachments in the full-screen editor too, so a user who staged
2626− // images then expanded for a long prompt can still see and remove them without
2627− // collapsing first (mirrors the inline composer's AttachmentStrip).
2628− AttachmentStrip(attachments, onRemove = onRemoveAttachment, staging = staging, stagingFileCount = stagingFileCount)
2629− OutlinedTextField(
2630− value = value,
2631− onValueChange = { v -> onValueChange(v.take(NetworkConfig.maxDraftLengthChars)) },
2632− modifier = Modifier
2633− .fillMaxSize()
2634− .weight(1f)
2635− // Honor the "Send on Enter" setting here too, so the full-screen
2636− // editor matches the inline composer: Enter sends (Shift+Enter
2637− // newlines) when on; Enter inserts a newline and Ctrl+Enter sends
2638− // when off. Previously this hard-coded ImeAction.Default and had no
2639− // key handler, so a hardware-keyboard user got a different behaviour
2640− // from the inline composer depending on which they happened to open.
2641− .onPreviewKeyEvent { event ->
2642− if (event.type != KeyEventType.KeyDown || event.key != Key.Enter) return@onPreviewKeyEvent false
2643− val send = enterShouldSend(
2644− enabled = canSend,
2645− hasContent = canSend,
2646− sendOnEnter = sendOnEnter,
2647− shift = event.isShiftPressed,
2648− ctrl = event.isCtrlPressed,
2649− )
2650− if (send) { onSend(); true } else false
2651− },
2652− placeholder = { Text(stringResource(R.string.message_placeholder)) },
2653− maxLines = Int.MAX_VALUE,
2654− keyboardOptions = KeyboardOptions(
2655− imeAction = if (sendOnEnter) ImeAction.Send else ImeAction.Default,
2656− capitalization = KeyboardCapitalization.Sentences,
2657− ),
2658− keyboardActions = KeyboardActions(
2659− onSend = { if (canSend) onSend() },
2660− ),
2661− )
2662− }
2663− }
2664− }
2665− }
2666−}
2667−
2668−/** Whether a hardware Enter keypress should send: never when disabled/empty; otherwise
2669− * Enter sends (unless Shift) when send-on-Enter is on, else only Ctrl+Enter sends. */
2670−private fun enterShouldSend(
2671− enabled: Boolean,
2672− hasContent: Boolean,
2673− sendOnEnter: Boolean,
2674− shift: Boolean,
2675− ctrl: Boolean,
2676−): Boolean = when {
2677− !enabled || !hasContent -> false
2678− sendOnEnter -> !shift
2679− else -> ctrl
2680−}
2681−
2682−/** The composer's trailing button: while a run is active a Stop (with in-flight spinner),
2683− * preceded by a Queue button when the user has typed a follow-up; otherwise Send. Extracted so
2684− * [ChatInputBar] stays under the complexity threshold. */
2685−@Composable
2686−private fun ComposerTrailingButton(
2687− running: Boolean,
2688− aborting: Boolean,
2689− canSend: Boolean,
2690− canQueue: Boolean,
2691− onSend: () -> Unit,
2692− onAbort: () -> Unit,
2693− onQueue: () -> Unit,
2694−) {
2695− if (running) {
2696− Row(verticalAlignment = Alignment.CenterVertically) {
2697− // While a run is active the trailing action is Stop, so the only send affordance is
2698− // the keyboard's IME action — which is a plain newline when "Send on Enter" is off.
2699− // That leaves a touch-only user with the setting off no way to queue a follow-up
2700− // (Ctrl+Enter needs a hardware keyboard). Surface an explicit Queue button whenever
2701− // there's typed TEXT so queuing is always reachable, without changing the user's
2702− // Enter-inserts-a-newline preference. Gate on typed text — not the send-oriented
2703− // canSend, which is also true for an attachment-only composer — because queuing "" just
2704− // calls setQueuedFollowUp(null), silently cancelling any already-queued follow-up and
2705− // dropping the staged attachment (queued follow-ups don't carry attachments anyway).
2706− if (canQueue) {
2707− IconButton(
2708− onClick = onQueue,
2709− modifier = Modifier.testTag("queue_button"),
2710− ) {
2711− // PlaylistAdd reads as "add to a queue/list" more clearly than a clock
2712− // icon (which can be read as "snooze" or "later"), and isn't confused with
2713− // the Send action sitting right beside the Stop button.
2714− Icon(
2715− Icons.AutoMirrored.Filled.PlaylistAdd,
2716− contentDescription = stringResource(R.string.queue_followup),
2717− )
2718− }
2719− }
2720− // Show a spinner while the abort REST call is in flight so the user sees the stop
2721− // was sent, and disable to prevent a double-tap.
2722− IconButton(
2723− onClick = onAbort,
2724− enabled = !aborting,
2725− modifier = Modifier.padding(start = 4.dp).testTag("stop_button"),
2726− ) {
2727− if (aborting) {
2728− val stopLabel = stringResource(R.string.stop)
2729− CircularProgressIndicator(
2730− Modifier.size(18.dp).semantics { contentDescription = stopLabel },
2731− strokeWidth = 2.dp,
2732− )
2733− } else {
2734− Icon(Icons.Filled.Stop, contentDescription = stringResource(R.string.stop))
2735− }
2736− }
2737− }
2738− } else {
2739− IconButton(
2740− onClick = onSend,
2741− enabled = canSend,
2742− modifier = Modifier.padding(start = 4.dp).testTag("send_button"),
2743− ) {
2744− // Tint the send icon with primary when there's content to send so the commit action
2745− // draws the eye; muted otherwise. A plain enabled/disabled flip is easy to miss.
2746− Icon(
2747− Icons.AutoMirrored.Filled.Send,
2748− contentDescription = stringResource(R.string.send),
2749− tint = if (canSend) MaterialTheme.colorScheme.primary
2750− else MaterialTheme.colorScheme.onSurfaceVariant,
2751− )
2752− }
2753− }
2754−}
2755−
2756−@OptIn(androidx.compose.foundation.layout.ExperimentalLayoutApi::class)
2757−@Composable
2758−private fun EmptyConversation(
2759− onSuggestion: (String) -> Unit,
2760− modifier: Modifier = Modifier,
2761−) {
2762− // A few example prompts so a first-time user has a one-tap path to their first
2763− // message instead of staring at a blank input. Tapping a chip fills the draft
2764− // (without sending) so the user can edit it before sending.
2765− val suggestions = remember {
2766− listOf(
2767− R.string.empty_chat_suggest_1,
2768− R.string.empty_chat_suggest_2,
2769− R.string.empty_chat_suggest_3,
2770− )
2771− }
2772− Column(
2773− modifier = modifier.padding(32.dp),
2774− horizontalAlignment = Alignment.CenterHorizontally,
2775− ) {
2776− Icon(
2777− Icons.Filled.AutoAwesome,
2778− contentDescription = null,
2779− modifier = Modifier.size(48.dp),
2780− tint = MaterialTheme.colorScheme.onSurfaceVariant,
2781− )
2782− Spacer(Modifier.size(16.dp))
2783− Text(
2784− stringResource(R.string.empty_chat_title),
2785− style = MaterialTheme.typography.titleMedium,
2786− )
2787− Spacer(Modifier.size(8.dp))
2788− Text(
2789− stringResource(R.string.empty_chat_hint),
2790− style = MaterialTheme.typography.bodyMedium,
2791− color = MaterialTheme.colorScheme.onSurfaceVariant,
2792− )
2793− Spacer(Modifier.size(20.dp))
2794− // Suggestion chips wrap across rows on narrow screens instead of stacking full-width,
2795− // so a longer localized prompt doesn't push the chips off-screen on a phone.
2796− FlowRow(
2797− modifier = Modifier.fillMaxWidth(),
2798− horizontalArrangement = Arrangement.spacedBy(8.dp),
2799− verticalArrangement = Arrangement.spacedBy(8.dp),
2800− ) {
2801− suggestions.forEach { resId ->
2802− val text = stringResource(resId)
2803− androidx.compose.material3.AssistChip(
2804− onClick = { onSuggestion(text) },
2805− label = { Text(text, style = MaterialTheme.typography.bodyMedium) },
2806− )
2807− }
2808− }
2809− }
2810−}
2811−
2812−/** A banner shown while a revert checkpoint is active, offering an Undo (unrevert). When the
2813− * server included a diff of the revert, a collapsible "Show what changed" affordance reveals
2814− * it inline via [DiffView] so the user can see what was rolled back before deciding to undo. */
2815−@Composable
2816−private fun RevertBanner(diff: String?, isEditing: Boolean, onUndo: () -> Unit) {
2817− val haptics = LocalHapticFeedback.current
2818− var showDiff by rememberSaveable { mutableStateOf(false) }
2819− val expandMotion = rememberVisibilityTransitions()
2820− Surface(
2821− color = MaterialTheme.colorScheme.tertiaryContainer,
2822− tonalElevation = 2.dp,
2823− modifier = Modifier.fillMaxWidth(),
2824− ) {
2825− Column {
2826− Row(
2827− modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
2828− verticalAlignment = Alignment.CenterVertically,
2829− horizontalArrangement = Arrangement.SpaceBetween,
2830− ) {
2831− Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
2832− Icon(
2833− if (isEditing) Icons.Filled.Edit else Icons.Filled.Restore,
2834− contentDescription = null,
2835− tint = MaterialTheme.colorScheme.onTertiaryContainer,
2836− modifier = Modifier.size(18.dp),
2837− )
2838− Text(
2839− stringResource(if (isEditing) R.string.editing_banner else R.string.reverted_banner),
2840− style = MaterialTheme.typography.bodySmall,
2841− color = MaterialTheme.colorScheme.onTertiaryContainer,
2842− modifier = Modifier.padding(start = 8.dp),
2843− )
2844− // "Show what changed" toggle, shown only when the server provided a diff.
2845− // Collapsible so the banner stays compact by default; a user curious about
2846− // what the revert rolled back can expand it inline without leaving the chat.
2847− if (!diff.isNullOrBlank()) {
2848− TextButton(
2849− onClick = {
2850− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2851− showDiff = !showDiff
2852− },
2853− contentPadding = androidx.compose.foundation.layout.PaddingValues(start = 8.dp, end = 4.dp),
2854− ) {
2855− Icon(
2856− if (showDiff) Icons.Filled.ExpandLess else Icons.Filled.ExpandMore,
2857− contentDescription = null,
2858− modifier = Modifier.size(16.dp),
2859− )
2860− Text(
2861− stringResource(if (showDiff) R.string.revert_hide_diff else R.string.revert_show_diff),
2862− style = MaterialTheme.typography.labelSmall,
2863− modifier = Modifier.padding(start = 4.dp),
2864− )
2865− }
2866− }
2867− }
2868− TextButton(onClick = {
2869− // Haptic on undo to match the other destructive/important confirmations: a
2870− // revert restores potentially hundreds of hidden messages.
2871− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2872− onUndo()
2873− }) { Text(stringResource(R.string.undo)) }
2874− }
2875− // The diff render lives inside the banner's Surface so it inherits the tertiary
2876− // tonal container and reads as part of the banner, not a floating panel.
2877− if (!diff.isNullOrBlank()) {
2878− AnimatedVisibility(
2879− visible = showDiff,
2880− enter = expandMotion.enter,
2881− exit = expandMotion.exit,
2882− ) {
2883− Column(modifier = Modifier.padding(start = 12.dp, end = 12.dp, bottom = 8.dp)) {
2884− Text(
2885− stringResource(R.string.revert_diff_header),
2886− style = MaterialTheme.typography.labelSmall,
2887− color = MaterialTheme.colorScheme.onTertiaryContainer,
2888− modifier = Modifier.padding(bottom = 4.dp),
2889− )
2890− DiffView(diff, saveKey = "revertDiff")
2891− }
2892− }
2893− }
2894− }
2895− }
2896−}
2897−
2898−/** A dismissible preview card shown above the composer when the user quote-replied to a
2899− * message. Displays the quoted text (truncated) with a Cancel affordance so the user can
2900− * abort the quote without digging into the draft to strip the `>`-prefixed lines. Mirrors
2901− * the Discord/Slack quote-preview pattern. */
2902−@Composable
2903−private fun QuoteReplyBanner(quotedText: String, onCancel: () -> Unit) {
2904− val haptics = LocalHapticFeedback.current
2905− Surface(
2906− color = MaterialTheme.colorScheme.secondaryContainer,
2907− tonalElevation = 2.dp,
2908− modifier = Modifier.fillMaxWidth(),
2909− ) {
2910− Row(
2911− modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 6.dp, bottom = 6.dp),
2912− verticalAlignment = Alignment.Top,
2913− ) {
2914− Icon(
2915− Icons.Filled.FormatQuote,
2916− contentDescription = null,
2917− tint = MaterialTheme.colorScheme.onSecondaryContainer,
2918− modifier = Modifier.size(18.dp).padding(top = 2.dp),
2919− )
2920− Column(modifier = Modifier.weight(1f).padding(start = 8.dp)) {
2921− Text(
2922− stringResource(R.string.quote_reply_banner),
2923− style = MaterialTheme.typography.labelSmall,
2924− color = MaterialTheme.colorScheme.onSecondaryContainer,
2925− )
2926− Text(
2927− quotedText,
2928− style = MaterialTheme.typography.bodySmall,
2929− color = MaterialTheme.colorScheme.onSecondaryContainer,
2930− maxLines = 2,
2931− overflow = TextOverflow.Ellipsis,
2932− )
2933− }
2934− IconButton(onClick = {
2935− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2936− onCancel()
2937− }) {
2938− Icon(
2939− Icons.Filled.Close,
2940− contentDescription = stringResource(R.string.cancel_quote_reply),
2941− tint = MaterialTheme.colorScheme.onSecondaryContainer,
2942− modifier = Modifier.size(18.dp),
2943− )
2944− }
2945− }
2946− }
2947−}
2948−
2949−/** A banner shown while messages composed offline are queued in the outbox, with a
2950− * "Send now" nudge and a discard. Shows a spinner while the queue is flushing. */
2951−@Composable
2952−private fun OutboxBanner(
2953− count: Int,
2954− sending: Boolean,
2955− onFlush: () -> Unit,
2956− onDiscard: () -> Unit,
2957−) {
2958− var showDiscardConfirm by rememberSaveable { mutableStateOf(false) }
2959− Surface(
2960− color = MaterialTheme.colorScheme.secondaryContainer,
2961− tonalElevation = 2.dp,
2962− modifier = Modifier.fillMaxWidth(),
2963− ) {
2964− Row(
2965− modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
2966− verticalAlignment = Alignment.CenterVertically,
2967− horizontalArrangement = Arrangement.SpaceBetween,
2968− ) {
2969− Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
2970− if (sending) {
2971− CircularProgressIndicator(
2972− Modifier.size(16.dp),
2973− strokeWidth = 2.dp,
2974− color = MaterialTheme.colorScheme.onSecondaryContainer,
2975− )
2976− Spacer(Modifier.size(8.dp))
2977− }
2978− Text(
2979− if (sending) {
2980− stringResource(R.string.outbox_sending)
2981− } else {
2982− val res = if (count == 1) R.string.outbox_pending_one else R.string.outbox_pending_many
2983− stringResource(res, count)
2984− },
2985− style = MaterialTheme.typography.bodySmall,
2986− color = MaterialTheme.colorScheme.onSecondaryContainer,
2987− )
2988− }
2989− if (!sending) {
2990− val haptics = LocalHapticFeedback.current
2991− TextButton(onClick = onFlush) { Text(stringResource(R.string.outbox_flush)) }
2992− TextButton(onClick = {
2993− // Confirm before discarding all queued messages (irreversible), matching
2994− // the confirmation pattern used by deleteSession and other destructive
2995− // actions. Previously a single tap dropped every queued message.
2996− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
2997− showDiscardConfirm = true
2998− }) {
2999− Text(stringResource(R.string.outbox_discard_all), color = MaterialTheme.colorScheme.error)
3000− }
3001− }
3002− }
3003− }
3004− if (showDiscardConfirm) {
3005− androidx.compose.material3.AlertDialog(
3006− onDismissRequest = { showDiscardConfirm = false },
3007− title = { Text(stringResource(R.string.discard_queued_title)) },
3008− text = { Text(stringResource(R.string.discard_queued_text, count)) },
3009− confirmButton = {
3010− androidx.compose.material3.TextButton(onClick = {
3011− showDiscardConfirm = false
3012− onDiscard()
3013− }) { Text(stringResource(R.string.discard)) }
3014− },
3015− dismissButton = {
3016− androidx.compose.material3.TextButton(onClick = { showDiscardConfirm = false }) {
3017− Text(stringResource(R.string.cancel))
3018− }
3019− },
3020− )
3021− }
3022−}
3023−
3024−/** Prompt for a one-off shell command to run in the session's worktree. */
3025−@Composable
3026−private fun ShellCommandDialog(onDismiss: () -> Unit, onRun: (String) -> Unit) {
3027− var command by rememberSaveable { mutableStateOf("") }
3028− AlertDialog(
3029− onDismissRequest = onDismiss,
3030− title = { Text(stringResource(R.string.run_shell_command)) },
3031− text = {
3032− OutlinedTextField(
3033− value = command,
3034− onValueChange = { command = it },
3035− modifier = Modifier.fillMaxWidth(),
3036− placeholder = { Text(stringResource(R.string.shell_command_hint)) },
3037− label = { Text(stringResource(R.string.shell_command_label)) },
3038− singleLine = true,
3039− keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
3040− keyboardActions = KeyboardActions(onDone = { if (command.isNotBlank()) onRun(command.trim()) }),
3041− )
3042− },
3043− confirmButton = {
3044− TextButton(
3045− onClick = { if (command.isNotBlank()) onRun(command.trim()) },
3046− enabled = command.isNotBlank(),
3047− ) { Text(stringResource(R.string.run)) }
3048− },
3049− dismissButton = { TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) } },
3050− )
3051−}
3052−
3053−/**
3054− * Change signal for the auto-scroll-on-stream watcher. Primitive fields avoid the
3055− * boxing `Triple<Int, Int, Boolean>` would impose on every snapshot evaluation, and
3056− * equality is structural so `snapshotFlow` emits only when something relevant changes.
3057− */
3058−private data class AutoScrollSignal(val size: Int, val lastTextLength: Int, val pinned: Boolean)
3059−
3060−/** Length of the streaming content carried by [part], driving auto-scroll as it grows.
3061− * Covers text, reasoning, and tool output so a pinned view keeps following non-text
3062− * streaming, not just plain assistant text. O(1). */
3063−private fun streamingContentLength(part: Part?): Int = when (part) {
3064− is TextPart -> part.text.length
3065− is ReasoningPart -> part.text.length
3066− is ToolPart -> when (val st = part.state) {
3067− is ToolCompleted -> st.output?.length ?: 0
3068− is ToolError -> st.error?.length ?: 0
3069− is ToolRunning -> st.title?.length ?: 0
3070− else -> 0
3071− }
3072− else -> 0
3073−}
3074−
3075−/** Rename dialog for the currently-open session. Mirrors the SessionListScreen rename
3076− * dialog but lives in the chat screen so the user can rename without backing out to
3077− * the list. Pre-filled with the current title; the cap matches the list dialog. */
3078−@Composable
3079−private fun RenameSessionChatDialog(
3080− initialTitle: String,
3081− onDismiss: () -> Unit,
3082− onConfirm: (String) -> Unit,
3083−) {
3084− // Seed the field once (no key input) so a later external title change — e.g. opencode
3085− // auto-generating a session title after the first prompt, arriving via SessionUpdated —
3086− // doesn't re-initialize the box and discard the user's in-progress edit.
3087− var title by rememberSaveable { mutableStateOf(initialTitle) }
3088− AlertDialog(
3089− onDismissRequest = onDismiss,
3090− title = { Text(stringResource(R.string.rename_session_chat)) },
3091− text = {
3092− OutlinedTextField(
3093− value = title,
3094− onValueChange = { v -> title = v.take(NetworkConfig.maxSessionTitleChars) },
3095− modifier = Modifier.fillMaxWidth(),
3096− placeholder = { Text(stringResource(R.string.session_title_hint)) },
3097− label = { Text(stringResource(R.string.rename_session_chat)) },
3098− singleLine = true,
3099− keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
3100− keyboardActions = KeyboardActions(onDone = { if (title.isNotBlank()) onConfirm(title.trim()) }),
3101− )
3102− },
3103− confirmButton = {
3104− TextButton(onClick = { if (title.isNotBlank()) onConfirm(title.trim()) }, enabled = title.isNotBlank()) {
3105− Text(stringResource(R.string.save))
3106− }
3107− },
3108− dismissButton = {
3109− TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) }
3110− },
3111− )
3112−}
3113−
3114−/**
3115− * A single item in the chat message list — either a [Message] bubble or a day
3116− * [Separator] inserted before the first message of a new day. The separator shifts
3117− * the LazyColumn indices vs. the raw messages list, so scroll-target math must use
3118− * the [List] of these items (not `messages.size`/`lastIndex`).
3119− */
3120−private sealed interface MessageListItem {
3121− val key: Any
3122− val contentType: Any
3123−
3124− data class Message(
3125− val message: MessageWithParts,
3126− override val key: Any,
3127− // Whether this is the first message in a consecutive run of the same speaker (role).
3128− // Used to suppress the assistant avatar/header on follow-up messages in the same run,
3129− // reducing visual noise in tool-heavy conversations where many assistant messages
3130− // appear back-to-back. A separator or a role change resets the flag.
3131− val isFirstOfSpeaker: Boolean,
3132− ) : MessageListItem {
3133− override val contentType: Any get() = message.info::class
3134− }
3135−
3136− data class Separator(val label: String, val ordinal: Int) : MessageListItem {
3137− // Key on the day-occurrence ordinal, not the label: two non-contiguous groups
3138− // can share a label (e.g. an untimestamped message — empty label — between two
3139− // same-day messages, or two untimestamped groups), and a label-only key would
3140− // then collide, which makes LazyColumn throw on duplicate keys. The ordinal is
3141− // stable for a given message ordering so slots aren't needlessly recreated.
3142− override val key: Any get() = "sep_${ordinal}_$label"
3143− // Separators share a contentType so the LazyColumn can recycle their slots.
3144− override val contentType: Any get() = "separator"
3145− }
3146−}
3147−
3148−/**
3149− * Build the interleaved list of [MessageListItem]s for the message list, inserting a
3150− * [MessageListItem.Separator] before the first message of each new calendar day. Uses
3151− * the message's `time.created` (falling back to `updated` then `completed`) to bucket.
3152− * Messages with no timestamp are grouped under an empty-label separator only if they
3153− * start the list, so a server that omits timestamps doesn't suppress the first divider.
3154− *
3155− * [todayLabel]/[yesterdayLabel] are resolved by the caller (a @Composable can't call
3156− * stringResource from inside this plain function) and used for the "Today"/"Yesterday"
3157− * labels; older days fall back to a locale-stable medium-date format.
3158− */
3159−private fun buildMessageListItems(
3160− messages: List<MessageWithParts>,
3161− todayLabel: String,
3162− yesterdayLabel: String,
3163−): List<MessageListItem> {
3164− if (messages.isEmpty()) return emptyList()
3165− val today = java.time.LocalDate.now(java.time.ZoneId.systemDefault())
3166− val dateFmt = mediumDateFormat()
3167− val result = ArrayList<MessageListItem>(messages.size + 4)
3168− val seenKeys = HashSet<String>(messages.size * 2)
3169− var lastDayKey: String? = null
3170− var sepOrdinal = 0
3171− var emptyIdOrdinal = 0
3172− var first = true
3173− // Track the previous message's role to detect consecutive same-speaker runs, so the
3174− // avatar/header can be suppressed on follow-up messages in the same run. A null means
3175− // "no previous message or a separator just interrupted the run", both of which make the
3176− // next message the first of its group.
3177− var prevRoleClass: kotlin.reflect.KClass<out soy.iko.opencode.data.model.MessageInfo>? = null
3178− for (message in messages) {
3179− val ts = message.info.time?.created ?: message.info.time?.updated ?: message.info.time?.completed
3180− val dayKey = ts?.let { dayKey(it) } ?: ""
3181− // Emit a separator before the very first message (so a leading un-timestamped message
3182− // still gets the first divider, empty label and all), and thereafter only when crossing
3183− // into a new NON-empty calendar day. An un-timestamped message mid-list (empty key)
3184− // neither emits its own separator nor resets the day — otherwise a following same-day
3185− // message would see a "" -> "<today>" transition and emit a duplicate "Today" header.
3186− if (first || (dayKey.isNotEmpty() && dayKey != lastDayKey)) {
3187− result.add(MessageListItem.Separator(dayLabel(dayKey, ts ?: 0L, today, todayLabel, yesterdayLabel, dateFmt), sepOrdinal++))
3188− // A date separator visually breaks a speaker run, so the next message is treated
3189− // as the first of its group (even if the same role continues across the day break).
3190− prevRoleClass = null
3191− }
3192− if (dayKey.isNotEmpty()) lastDayKey = dayKey
3193− first = false
3194− // Most messages have a unique non-empty id. An unrecognized-role message can carry an
3195− // empty id — and the reducer intentionally keeps several such messages as distinct
3196− // holders — so give each a stable synthetic key and defensively de-collide any remaining
3197− // duplicate; otherwise LazyColumn throws on a duplicate key and the whole screen crashes.
3198− var key = message.info.id.ifEmpty { "msg-empty-${emptyIdOrdinal++}" }
3199− if (!seenKeys.add(key)) {
3200− var suffix = 1
3201− while (!seenKeys.add("$key#$suffix")) suffix++
3202− key = "$key#$suffix"
3203− }
3204− val roleClass = message.info::class
3205− val isFirstOfSpeaker = prevRoleClass == null || roleClass != prevRoleClass
3206− result.add(MessageListItem.Message(message, key, isFirstOfSpeaker))
3207− prevRoleClass = roleClass
3208− }
3209− return result
3210−}
3211−
3212−/**
3213− * A stable bucket key for a timestamp's calendar day (epoch-days as a string).
3214− *
3215− * [buildMessageListItems] re-runs on every streaming snapshot (the memo is keyed on the
3216− * whole `messages` list, which must stay so the live message's fresh parts render), so a
3217− * naive implementation would re-allocate an `Instant`/`ZonedDateTime`/`LocalDate` for
3218− * every message on every token. Message timestamps are immutable once assigned, so we
3219− * memoize the parse per epoch-millis: after the first snapshot, each unchanged message is
3220− * a cheap hash lookup. Bounded; only touched on the main thread during composition.
3221− *
3222− * Backed by a [ConcurrentHashMap] (not an access-ordered LinkedHashMap): the previous
3223− * synchronized access-ordered LinkedHashMap reordered its linked list node on every
3224− * `getOrPut` hit, which is real work multiplied by N messages × ~20 snapshots/sec during
3225− * streaming. A ConcurrentHashMap has no access-order bookkeeping and is lock-free for
3226− * reads, so the common case (a hit) is a single volatile read + hash probe. The bound
3227− * is enforced via [removeEldestEntry] is not available on ConcurrentHashMap, so we cap
3228− * via `compute`-guarded size checks; in practice the cache size is bounded by the number
3229− * of distinct message timestamps in a session (≤ [NetworkConfig.maxInMemoryMessages]).
3230− */
3231−private val dayKeyCache = java.util.concurrent.ConcurrentHashMap<Long, String>(256)
3232−
3233−private fun dayKey(epochMillis: Long): String = dayKeyCache.getOrPut(epochMillis) {
3234− java.time.Instant.ofEpochMilli(epochMillis)
3235− .atZone(java.time.ZoneId.systemDefault()).toLocalDate().toEpochDay().toString()
3236−}
3237−
3238−// The medium-date formatter is an ICU locale lookup; cache one instance instead of
3239−// allocating a fresh one per buildMessageListItems call, rebuilding only if the default
3240−// locale changes at runtime. Main-thread-only, so no synchronization is needed.
3241−private var cachedDateFmt: java.text.DateFormat? = null
3242−private var cachedDateFmtLocale: java.util.Locale? = null
3243−
3244−private fun mediumDateFormat(): java.text.DateFormat {
3245− val locale = java.util.Locale.getDefault()
3246− val existing = cachedDateFmt
3247− if (existing != null && cachedDateFmtLocale == locale) return existing
3248− return java.text.DateFormat.getDateInstance(java.text.DateFormat.MEDIUM).also {
3249− cachedDateFmt = it
3250− cachedDateFmtLocale = locale
3251− }
3252−}
3253−
3254−/**
3255− * Resolve a day-key back to a human-readable label. "Today" / "Yesterday" for the
3256− * recent days, otherwise a locale-stable medium-date format. Returns an empty string
3257− * when [dayKey] is empty (no timestamp) so no separator is rendered for un-timestamped
3258− * messages.
3259− */
3260−private fun dayLabel(
3261− dayKey: String,
3262− ts: Long,
3263− today: java.time.LocalDate,
3264− todayLabel: String,
3265− yesterdayLabel: String,
3266− dateFmt: java.text.DateFormat,
3267−): String {
3268− if (dayKey.isEmpty()) return ""
3269− val epochDay = dayKey.toLongOrNull() ?: return ""
3270− val date = java.time.LocalDate.ofEpochDay(epochDay)
3271− return when {
3272− date == today -> todayLabel
3273− date == today.minusDays(1) -> yesterdayLabel
3274− else -> dateFmt.format(java.util.Date(ts))
3275− }
3276−}
3277−
3278−/**
3279− * A centered day divider in the message list. Renders nothing for an empty label
3280− * (the no-timestamp case) so un-timestamped messages don't get a stray blank divider.
3281− */
3282−@Composable
3283−private fun DateSeparator(label: String) {
3284− if (label.isBlank()) return
3285− Row(
3286− modifier = Modifier.fillMaxWidth(),
3287− horizontalArrangement = Arrangement.Center,
3288− ) {
3289− Surface(
3290− color = MaterialTheme.colorScheme.surfaceVariant,
3291− shape = MaterialTheme.shapes.small,
3292− // Marked as a heading so TalkBack users can navigate day-by-day with the
3293− // heading-skip gesture — the canonical affordance for date dividers in a list.
3294− modifier = Modifier.semantics(mergeDescendants = true) { heading() },
3295− ) {
3296− Text(
3297− label,
3298− style = MaterialTheme.typography.labelSmall,
3299− color = MaterialTheme.colorScheme.onSurfaceVariant,
3300− modifier = Modifier.padding(horizontal = 12.dp, vertical = 4.dp),
3301− )
3302− }
3303− }
3304−}
3305−
3306−/** Skeleton placeholder bubbles for the chat loading and run-started states. Alpha pulses
3307− * (gated by reduced-motion) to convey ongoing work; the column carries the a11y label so
3308− * TalkBack announces "Loading" instead of reading the skeleton bars. Rendered as a
3309− * [BoxScope] extension so it can align itself to the top center of its host box. */
3310−@Composable
3311−private fun androidx.compose.foundation.layout.BoxScope.ChatSkeleton(topPad: androidx.compose.ui.unit.Dp) {
3312− val loadingLabel = stringResource(R.string.loading)
3313− val reducedMotion = LocalReducedMotion.current
3314− val transition = rememberInfiniteTransition(label = "skeleton")
3315− val pulse by transition.animateFloat(
3316− initialValue = 0.35f,
3317− targetValue = 0.7f,
3318− animationSpec = infiniteRepeatable(tween(900), RepeatMode.Reverse),
3319− label = "skeletonAlpha",
3320− )
3321− val skeletonAlpha = if (reducedMotion) 0.5f else pulse
3322− val skeletonColor = MaterialTheme.colorScheme.surfaceVariant
3323− @Composable
3324− fun bar(widthFraction: Float) {
3325− Box(
3326− Modifier
3327− .fillMaxWidth(widthFraction)
3328− .height(14.dp)
3329− .clip(RoundedCornerShape(4.dp))
3330− .background(skeletonColor)
3331− .alpha(skeletonAlpha),
3332− )
3333− }
3334− Column(
3335− modifier = Modifier
3336− .align(Alignment.TopCenter)
3337− .padding(top = topPad)
3338− .padding(16.dp)
3339− .fillMaxWidth()
3340− .semantics { contentDescription = loadingLabel },
3341− verticalArrangement = Arrangement.spacedBy(14.dp),
3342− ) {
3343− repeat(4) { i ->
3344− val left = i % 2 == 0
3345− Row(
3346− modifier = Modifier.fillMaxWidth(),
3347− horizontalArrangement = if (left) Arrangement.Start else Arrangement.End,
3348− ) {
3349− Column(
3350− modifier = Modifier.fillMaxWidth(if (left) 0.7f else 0.55f),
3351− verticalArrangement = Arrangement.spacedBy(6.dp),
3352− ) {
3353− bar(1f)
3354− bar(0.8f)
3355− }
3356− }
3357− }
3358− }
3359−}