@@ -1,3242 +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 isOnline by container.isOnline.collectAsStateWithLifecycle()
247− val haptics = LocalHapticFeedback.current
248− val layoutDirection = LocalLayoutDirection.current
249− val scope = rememberCoroutineScope()
250− val shareContext = LocalContext.current
251− val defaultShareSubject = stringResource(R.string.share_subject)
252− val sessionLabel = stringResource(R.string.session)
253− val defaultModelLabel = stringResource(R.string.default_model)
254− val subtitle = remember(selectedModel?.modelLabel, selectedAgent, defaultModelLabel) {
255− buildString {
256− append(selectedModel?.modelLabel ?: defaultModelLabel)
257− selectedAgent?.let { append(" · $it") }
258− }
259− }
260−
261− // Connection profile (with auth) for rendering inline image attachments.
262− // Collect as state so a server switch recomposes the image context.
263− val activeConnection by container.activeConnection.collectAsStateWithLifecycle()
264− val imageContext = remember(activeConnection?.profile) {
265− activeConnection?.profile?.toImageContext()
266− }
267−
268− // Mark this session as read while the user is viewing it; clear on leave so new
269− // background activity can badge it again.
270− DisposableEffect(sessionId) {
271− container.setCurrentSession(sessionId)
272− onDispose { if (container.currentSession.value == sessionId) container.setCurrentSession(null) }
273− }
274−
275− // Navigate away when the session is deleted via SSE so the user isn't left
276− // on a zombie screen showing a conversation that no longer exists. Surface a
277− // toast (not a snackbar) because the screen is about to be popped — a snackbar
278− // would be torn down before the user could read it, while a toast survives.
279− // Covers both SSE-driven deletion (deleted on another device) and a user-
280− // initiated delete from the chat overflow menu (deleteSession in ChatViewModel
281− // sets the same flag on success).
282− val deletedContext = LocalContext.current
283− LaunchedEffect(sessionDeleted) {
284− if (sessionDeleted) {
285− showToast(deletedContext, deletedContext.getString(R.string.session_deleted_chat))
286− onBack()
287− }
288− }
289−
290− val snackbar = remember { SnackbarHostState() }
291− val retryLabel = stringResource(R.string.retry)
292− val inputFocusRequester = remember { androidx.compose.ui.focus.FocusRequester() }
293− // Dedicated focus requester for the in-conversation search field. The overflow menu's
294− // "Find in conversation" and Ctrl+F previously called inputFocusRequester.requestFocus()
295− // (the composer), so typing went to the composer instead of the search field.
296− val searchFocusRequester = remember { androidx.compose.ui.focus.FocusRequester() }
297− var showModelPicker by rememberSaveable { mutableStateOf(false) }
298− var showAgentPicker by rememberSaveable { mutableStateOf(false) }
299− var showTitleMenu by rememberSaveable { mutableStateOf(false) }
300− var showCommandPicker by rememberSaveable { mutableStateOf(false) }
301− var showExitConfirm by rememberSaveable { mutableStateOf(false) }
302− var showOverflowMenu by rememberSaveable { mutableStateOf(false) }
303− var showRenameDialog by rememberSaveable { mutableStateOf(false) }
304− var showDeleteDialog by rememberSaveable { mutableStateOf(false) }
305− var showShellDialog by rememberSaveable { mutableStateOf(false) }
306− var showPalette by rememberSaveable { mutableStateOf(false) }
307− var showShortcutsDialog by rememberSaveable { mutableStateOf(false) }
308− var searchActive by rememberSaveable { mutableStateOf(false) }
309− var chatSearch by rememberSaveable { mutableStateOf("") }
310− // Index of the currently-focused in-conversation search match (into the filtered list).
311− // Drives the up/down navigation: the search bar's arrows step through matches and scroll
312− // the list to each one, mirroring desktop chat apps (the bare filtered list previously
313− // required reading each message to find the term).
314− var searchPos by rememberSaveable { mutableIntStateOf(0) }
315− // Summarize and init (generate AGENTS.md) are irreversible, so a single tap is gated behind
316− // a confirmation dialog (from both the overflow menu and the command palette).
317− var showSummarizeConfirm by rememberSaveable { mutableStateOf(false) }
318− var showInitConfirm by rememberSaveable { mutableStateOf(false) }
319−
320− // Command-palette entries (keyboard-first: Ctrl+K). Labels resolved here so the remembered
321− // action list doesn't need a Composable context. Actions map to the same handlers the
322− // overflow menu drives, so the palette is a keyboard shortcut to them, not a parallel path.
323− val paletteModelLabel = stringResource(R.string.palette_switch_model)
324− val paletteAgentLabel = stringResource(R.string.palette_choose_agent)
325− val paletteCommandLabel = stringResource(R.string.palette_run_command)
326− val paletteSummarizeLabel = stringResource(R.string.palette_summarize)
327− val paletteRenameLabel = stringResource(R.string.rename_session_chat)
328− val paletteShellLabel = stringResource(R.string.run_shell_command)
329− val paletteActions = remember(
330− paletteModelLabel, paletteAgentLabel, paletteCommandLabel,
331− paletteSummarizeLabel, paletteRenameLabel, paletteShellLabel, hasMessages, running,
332− ) {
333− buildList {
334− add(PaletteAction("model", paletteModelLabel) { showModelPicker = true })
335− add(PaletteAction("agent", paletteAgentLabel) { showAgentPicker = true })
336− add(PaletteAction("command", paletteCommandLabel) { showCommandPicker = true })
337− if (hasMessages && !running) add(PaletteAction("summarize", paletteSummarizeLabel) { showSummarizeConfirm = true })
338− if (!running) add(PaletteAction("shell", paletteShellLabel) { showShellDialog = true })
339− add(PaletteAction("rename", paletteRenameLabel) { showRenameDialog = true })
340− }
341− }
342−
343− // Keep the screen awake while the agent is working in *this* session. The foreground
344− // service that holds process priority during a run is managed app-wide off
345− // container.anyRunActive (see OpencodeApp) so it survives navigating away from the chat
346− // mid-run — otherwise leaving the screen would drop priority and Doze could choke the
347− // SSE stream before the completion notification fires.
348− val currentView = LocalView.current
349− val appContext = LocalContext.current.applicationContext
350− DisposableEffect(running) {
351− currentView.keepScreenOn = running
352− onDispose { currentView.keepScreenOn = false }
353− }
354−
355− LaunchedEffect(Unit) {
356− vm.errorEvents.collect { event ->
357− // Only a failed *send* is retryable; attaching Retry to any other error (e.g. a
358− // message-load failure) would silently re-submit the last prompt on tap.
359− val result = if (event.retryable) {
360− snackbar.showSnackbar(message = event.message, actionLabel = retryLabel)
361− } else {
362− snackbar.showSnackbar(event.message)
363− }
364− if (result == androidx.compose.material3.SnackbarResult.ActionPerformed) vm.retryFailed()
365− }
366− }
367−
368− // Stop-undo: abort() emits the last-sent prompt here so this collector can show a
369− // "Stopped — Undo" snackbar. Tapping Undo re-sends the prompt, recovering an accidental
370− // Stop without a confirmation dialog (Stop now happens on first tap).
371− val undoStopLabel = stringResource(R.string.undo)
372− val stoppedLabel = stringResource(R.string.run_stopped_undo)
373− LaunchedEffect(Unit) {
374− vm.stopUndoEvents.collect { prompt ->
375− if (prompt != null) {
376− val result = snackbar.showSnackbar(message = stoppedLabel, actionLabel = undoStopLabel)
377− if (result == androidx.compose.material3.SnackbarResult.ActionPerformed) vm.resendLastPrompt()
378− }
379− }
380− }
381−
382− // In-place Undo for a user-initiated session delete. The delete is deferred for an undo
383− // window on the container; show the snackbar over the conversation the user is viewing so
384− // they can cancel without being navigated to the session list first. If the window expires
385− // the scheduled delete sets `sessionDeleted` and the effect below navigates away.
386− val undoLabel = stringResource(R.string.undo)
387− val sessionDeletedLabel = stringResource(R.string.session_deleted_chat)
388− LaunchedEffect(Unit) {
389− vm.deleteUndoEvents.collect {
390− coroutineScope {
391− val dismisser = launch {
392− delay(NetworkConfig.undoDeleteDelayMs)
393− snackbar.currentSnackbarData?.dismiss()
394− }
395− val result = snackbar.showSnackbar(
396− message = sessionDeletedLabel,
397− actionLabel = undoLabel,
398− duration = SnackbarDuration.Indefinite,
399− )
400− dismisser.cancel()
401− if (result == SnackbarResult.ActionPerformed) vm.cancelSessionDelete()
402− }
403− }
404− }
405−
406− // --- Attachments, voice, and share-link plumbing ---
407− val attachTooLargeMsg = stringResource(R.string.attachment_too_large)
408− val attachFailedMsg = stringResource(R.string.attachment_failed)
409− val attachLimitMsg = stringResource(R.string.attachment_limit)
410− val noCameraMsg = stringResource(R.string.no_camera_app)
411− val noVoiceMsg = stringResource(R.string.no_voice_app)
412− val voicePrompt = stringResource(R.string.voice_prompt)
413− val linkCopiedMsg = stringResource(R.string.link_copied)
414− val ttsUnavailableMsg = stringResource(R.string.tts_unavailable)
415−
416− // Count of picks currently being read + base64-encoded off the main thread, so the
417− // composer can show a staging placeholder immediately (chips only materialize once done).
418− var stagingCount by remember { mutableStateOf(0) }
419− // Total number of files still being staged across all in-flight batches, so the
420− // staging chip can show "Staging N files…" rather than a bare indeterminate spinner.
421− // A separate counter from [stagingCount] (which tracks batches, not files) so a
422− // multi-file pick reads as more work than a single-file pick.
423− var stagingFileTotal by remember { mutableStateOf(0) }
424−
425− // Convert each picked Uri to a base64 attachment off the main thread, honoring the
426− // per-prompt count cap and surfacing per-file errors without aborting the batch.
427− fun stageUris(uris: List<Uri>) {
428− if (uris.isEmpty()) return
429− scope.launch {
430− stagingCount++
431− stagingFileTotal += uris.size
432− try {
433− uris.forEachIndexed { index, uri ->
434− if (vm.attachments.value.size >= NetworkConfig.maxAttachments) {
435− snackbar.showSnackbar(attachLimitMsg)
436− // The cap dropped the rest of this batch; account for the files we
437− // won't process so stagingFileTotal doesn't linger over-counted.
438− stagingFileTotal -= uris.size - index
439− return@forEachIndexed
440− }
441− when (val result = uri.toAttachmentResult(appContext)) {
442− is AttachmentResult.Ok -> vm.addAttachment(result.attachment)
443− AttachmentResult.TooLarge -> snackbar.showSnackbar(attachTooLargeMsg)
444− AttachmentResult.Failed -> snackbar.showSnackbar(attachFailedMsg)
445− }
446− stagingFileTotal--
447− }
448− } finally {
449− stagingCount--
450− }
451− }
452− }
453−
454− val photoPicker = rememberLauncherForActivityResult(
455− ActivityResultContracts.PickMultipleVisualMedia(NetworkConfig.maxAttachments),
456− ) { uris -> stageUris(uris) }
457−
458− val filePicker = rememberLauncherForActivityResult(
459− ActivityResultContracts.GetMultipleContents(),
460− ) { uris -> stageUris(uris) }
461−
462− // Uri survives a config change mid-capture so the TakePicture result still resolves.
463− var pendingCaptureUri by rememberSaveable { mutableStateOf<Uri?>(null) }
464− val cameraLauncher = rememberLauncherForActivityResult(
465− ActivityResultContracts.TakePicture(),
466− ) { success ->
467− val uri = pendingCaptureUri
468− pendingCaptureUri = null
469− if (success && uri != null) stageUris(listOf(uri))
470− }
471−
472− val voiceLauncher = rememberLauncherForActivityResult(
473− ActivityResultContracts.StartActivityForResult(),
474− ) { result ->
475− if (result.resultCode == Activity.RESULT_OK) {
476− val spoken = result.data
477− ?.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)
478− ?.firstOrNull()
479− ?.takeIf { it.isNotBlank() }
480− if (spoken != null) {
481− // Append to the existing draft rather than replacing, so dictation adds to
482− // whatever the user already typed.
483− val current = vm.draft.value
484− val combined = if (current.isBlank()) spoken else "$current $spoken"
485− vm.updateDraft(combined.take(NetworkConfig.maxDraftLengthChars))
486− }
487− }
488− }
489−
490− fun launchCamera() {
491− val uri = newCameraCaptureUri(appContext)
492− if (uri == null) {
493− scope.launch { snackbar.showSnackbar(attachFailedMsg) }
494− return
495− }
496− pendingCaptureUri = uri
497− runCatching { cameraLauncher.launch(uri) }
498− .onFailure { pendingCaptureUri = null; scope.launch { snackbar.showSnackbar(noCameraMsg) } }
499− }
500−
501− fun launchVoice() {
502− val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH).apply {
503− putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM)
504− putExtra(RecognizerIntent.EXTRA_PROMPT, voicePrompt)
505− }
506− runCatching { voiceLauncher.launch(intent) }
507− .onFailure { scope.launch { snackbar.showSnackbar(noVoiceMsg) } }
508− }
509−
510− // A freshly-created share link is copied to the clipboard so the user can paste it right away.
511− LaunchedEffect(Unit) {
512− vm.shareLinkEvents.collect { url ->
513− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_share), url)
514− snackbar.showSnackbar(linkCopiedMsg)
515− }
516− }
517−
518− // Navigate to a session freshly branched from a message (branchFrom), once it's created.
519− // Keyed on Unit (like the sibling one-shot collectors above): keying on the onOpenSession
520− // lambda would cancel/restart this collector whenever the lambda's identity changes, risking
521− // a dropped branch-navigation event in the gap.
522− val branchedMsg = stringResource(R.string.branch_created)
523− LaunchedEffect(Unit) {
524− vm.branchEvents.collect { newId ->
525− showToast(shareContext, branchedMsg)
526− onOpenSession?.invoke(newId)
527− }
528− }
529−
530− // Stage images shared into the app (via the system share sheet) as attachments.
531− // Keyed on pendingSharedMedia (not Unit) so the effect re-fires when new media arrives
532− // while this ChatScreen is already composed — which happens in two-pane mode, where the
533− // detail ChatScreen is persistent (keyed on sessionId) and a LaunchedEffect(Unit) would
534− // only fire on first composition. consumePendingSharedMedia() atomically drains the
535− // pending list (compareAndSet to empty), so re-firing on the now-empty value is a no-op.
536− val pendingSharedMedia by container.pendingSharedMedia.collectAsStateWithLifecycle()
537− LaunchedEffect(pendingSharedMedia) {
538− val shared = container.consumePendingSharedMedia()
539− if (shared.isNotEmpty()) stageUris(shared.map { Uri.parse(it) })
540− }
541−
542− fun doSend() {
543− if (vm.send(draft)) {
544− // TextHandleMove (a light tick) is semantically right for a send commit;
545− // LongPress is reserved for long-press/swipe gestures.
546− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
547− }
548− }
549−
550− BackHandler(enabled = running && !showModelPicker && !showAgentPicker && !showCommandPicker) { showExitConfirm = true }
551−
552− Scaffold(
553− // Hardware-keyboard shortcuts (tablets / DeX / Chromebooks): Ctrl+K opens the command
554− // palette; Escape closes it, or stops a run. onPreviewKeyEvent on the Scaffold root sees
555− // events before the focused text field, but only Ctrl+K / Escape are consumed so normal
556− // typing (and the composer's own Enter-to-send handling) is untouched.
557− modifier = Modifier.onPreviewKeyEvent { ev ->
558− if (ev.type != KeyEventType.KeyDown) return@onPreviewKeyEvent false
559− when {
560− ev.isCtrlPressed && ev.key == Key.K -> { showPalette = true; true }
561− // Ctrl+F opens in-conversation search (the standard find shortcut), focusing
562− // the field so the user can type immediately.
563− ev.isCtrlPressed && ev.key == Key.F -> { searchActive = true; true }
564− ev.key == Key.Escape && showPalette -> { showPalette = false; true }
565− ev.key == Key.Escape && searchActive -> { searchActive = false; chatSearch = ""; true }
566− ev.key == Key.Escape && running && !showExitConfirm -> {
567− vm.abort(); true
568− }
569− else -> false
570− }
571− },
572− topBar = {
573− TopAppBar(
574− title = {
575− val changeLabel = stringResource(R.string.change_model_agent)
576− // The subtitle reads "model · agent", so tapping the title offers *both*
577− // — a small menu picks which picker to open. Previously the tap went
578− // straight to the model picker, leaving the agent changeable only via
579− // the overflow menu despite the title implying otherwise.
580− Box {
581− Row(
582− // mergeDescendants so TalkBack reads the title/subtitle Texts as one
583− // node; the click label rides on `clickable` (onClickLabel) instead of
584− // an explicit contentDescription, which would have SUPPRESSED the child
585− // Texts and announced only "Change model and agent".
586− modifier = Modifier
587− .clickable(
588− role = Role.Button,
589− onClickLabel = changeLabel,
590− ) { showTitleMenu = true }
591− .semantics(mergeDescendants = true) {},
592− verticalAlignment = Alignment.CenterVertically,
593− ) {
594− Column(modifier = Modifier.weight(1f, fill = false)) {
595− // maxLines=1 + Ellipsis so a long session title can't wrap and
596− // push the top bar to multiple lines, shifting the whole layout.
597− Text(
598− sessionTitle ?: sessionLabel,
599− maxLines = 1,
600− overflow = TextOverflow.Ellipsis,
601− )
602− Text(
603− subtitle,
604− style = MaterialTheme.typography.labelSmall,
605− color = MaterialTheme.colorScheme.onSurfaceVariant,
606− maxLines = 1,
607− overflow = TextOverflow.Ellipsis,
608− )
609− }
610− // Always show the affordance so the title reads as tappable even when
611− // the model catalog failed to load (models empty). Without it the title
612− // is indistinguishable from plain text and the pickers are effectively
613− // undiscoverable — and the dropdown items already disable themselves
614− // while a catalog is loading or unavailable.
615− Icon(
616− Icons.Filled.KeyboardArrowDown,
617− contentDescription = null,
618− tint = MaterialTheme.colorScheme.onSurfaceVariant,
619− modifier = Modifier.size(20.dp),
620− )
621− }
622− DropdownMenu(expanded = showTitleMenu, onDismissRequest = { showTitleMenu = false }) {
623− DropdownMenuItem(
624− text = { Text(stringResource(R.string.palette_switch_model)) },
625− enabled = !modelsLoading || models.isNotEmpty(),
626− onClick = { showTitleMenu = false; showModelPicker = true },
627− )
628− DropdownMenuItem(
629− text = { Text(stringResource(R.string.palette_choose_agent)) },
630− enabled = !agentsLoading || agents.isNotEmpty(),
631− onClick = { showTitleMenu = false; showAgentPicker = true },
632− )
633− }
634− }
635− },
636− navigationIcon = {
637− IconButton(onClick = {
638− if (running) showExitConfirm = true else onBack()
639− }) {
640− Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(R.string.back))
641− }
642− },
643− actions = {
644− // At-a-glance run status in the top bar. When the user is scrolled
645− // up (jump-to-latest FAB visible), the input-bar Stop button and the
646− // trailing "working…" row are off-screen, so a top-bar spinner is the
647− // only signal the agent is still working.
648− if (running) {
649− val workingLabel = stringResource(R.string.working)
650− CircularProgressIndicator(
651− Modifier.size(18.dp).semantics { contentDescription = workingLabel },
652− strokeWidth = 2.dp,
653− )
654− }
655− // Manual refresh: forces an SSE reconnect, which re-seeds messages
656− // from REST. A recovery path when the stream silently drops and the
657− // auto-reconnect re-seed is slow or fails. Shows a brief spinner as
658− // immediate tap feedback — the SSE reconnect may not visibly change
659− // the connection state when already Connected, so without it the tap
660− // appears to do nothing.
661− val refreshLabel = stringResource(R.string.refresh)
662− IconButton(
663− onClick = { vm.refreshMessages() },
664− enabled = activeConnection != null && !refreshing,
665− ) {
666− if (refreshing) {
667− CircularProgressIndicator(
668− Modifier.size(18.dp).semantics { contentDescription = refreshLabel },
669− strokeWidth = 2.dp,
670− )
671− } else {
672− Icon(Icons.Filled.Refresh, contentDescription = refreshLabel)
673− }
674− }
675− // Overflow menu consolidates the less-frequent actions (share,
676− // commands, agent, model, rename, delete) so the top bar stays
677− // scannable on narrow phones — previously 5 icons crowded the bar
678− // alongside the back button and tappable title. Catalog-loading
679− // spinners stay inline (next to the overflow) so a load state is
680− // visible without opening the menu.
681− val moreLabel = stringResource(R.string.more)
682− val loadingLabel = stringResource(R.string.loading)
683− val shareLabel = stringResource(R.string.share_conversation)
684− val copyAsMarkdownLabel = stringResource(R.string.copy_as_markdown)
685− val shareAsJsonLabel = stringResource(R.string.share_as_json)
686− val copyAsJsonLabel = stringResource(R.string.copy_as_json)
687− val commandsLabel = stringResource(R.string.commands)
688− val renameLabel = stringResource(R.string.rename_session_chat)
689− val deleteLabel = stringResource(R.string.delete_session_chat)
690− val createShareLabel = stringResource(R.string.create_share_link)
691− val copyShareLabel = stringResource(R.string.copy_share_link)
692− val stopShareLabel = stringResource(R.string.stop_sharing)
693− val summarizeLabel = stringResource(R.string.summarize_conversation)
694− val initLabel = stringResource(R.string.generate_agents_md)
695− val shellLabel = stringResource(R.string.run_shell_command)
696− Box {
697− IconButton(onClick = { showOverflowMenu = true }) {
698− Icon(Icons.Filled.MoreVert, contentDescription = moreLabel)
699− }
700− DropdownMenu(
701− expanded = showOverflowMenu,
702− onDismissRequest = { showOverflowMenu = false },
703− ) {
704− DropdownMenuItem(
705− text = { Text(shareLabel) },
706− enabled = hasMessages,
707− onClick = {
708− showOverflowMenu = false
709− scope.launch {
710− val md = withContext(Dispatchers.Default) {
711− buildConversationMarkdown(vm.messages.value, sessionTitle)
712− }
713− val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
714− type = "text/markdown"
715− putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
716− putExtra(android.content.Intent.EXTRA_TEXT, md)
717− }
718− runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareLabel)) }
719− .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
720− }
721− },
722− )
723− // Copy the whole conversation as Markdown to the clipboard, so a
724− // user can paste into another app without the share-sheet round-trip.
725− DropdownMenuItem(
726− text = { Text(copyAsMarkdownLabel) },
727− enabled = hasMessages,
728− onClick = {
729− showOverflowMenu = false
730− scope.launch {
731− val md = withContext(Dispatchers.Default) {
732− buildConversationMarkdown(vm.messages.value, sessionTitle)
733− }
734− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_message), md)
735− }
736− },
737− )
738− // Lossless JSON share: the full List<MessageWithParts> serialized with
739− // the shared OpencodeJson, so tool outputs, file sources, and reasoning
740− // survive verbatim (the Markdown export truncates/summarizes them).
741− DropdownMenuItem(
742− text = { Text(shareAsJsonLabel) },
743− enabled = hasMessages,
744− onClick = {
745− showOverflowMenu = false
746− scope.launch {
747− val json = withContext(Dispatchers.Default) {
748− buildConversationJson(vm.messages.value)
749− }
750− val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
751− type = "application/json"
752− putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
753− putExtra(android.content.Intent.EXTRA_TEXT, json)
754− }
755− runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareAsJsonLabel)) }
756− .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
757− }
758− },
759− )
760− DropdownMenuItem(
761− text = { Text(copyAsJsonLabel) },
762− enabled = hasMessages,
763− onClick = {
764− showOverflowMenu = false
765− scope.launch {
766− val json = withContext(Dispatchers.Default) {
767− buildConversationJson(vm.messages.value)
768− }
769− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_message), json)
770− }
771− },
772− )
773− DropdownMenuItem(
774− text = { Text(commandsLabel) },
775− enabled = !commandsLoading || commands.isNotEmpty(),
776− onClick = { showOverflowMenu = false; showCommandPicker = true },
777− )
778− DropdownMenuItem(
779− text = { Text(stringResource(R.string.keyboard_shortcuts)) },
780− onClick = { showOverflowMenu = false; showShortcutsDialog = true },
781− )
782− DropdownMenuItem(
783− text = { Text(stringResource(R.string.find_in_conversation)) },
784− onClick = {
785− showOverflowMenu = false
786− searchActive = true
787− // Focus is requested by the LaunchedEffect(searchActive)
788− // below, which waits for the search field to be composed
789− // before requesting focus (calling requestFocus here would
790− // target a field that isn't in the composition yet).
791− },
792− )
793− androidx.compose.material3.HorizontalDivider()
794− // Session sharing: create a public link, copy an existing one, or revoke it.
795− if (shareUrl == null) {
796− DropdownMenuItem(
797− text = { Text(createShareLabel) },
798− enabled = hasMessages,
799− onClick = { showOverflowMenu = false; vm.shareSession() },
800− )
801− } else {
802− DropdownMenuItem(
803− text = { Text(copyShareLabel) },
804− onClick = {
805− showOverflowMenu = false
806− shareUrl?.let {
807− copyToClipboard(shareContext, shareContext.getString(R.string.clip_label_share), it)
808− scope.launch { snackbar.showSnackbar(linkCopiedMsg) }
809− }
810− },
811− )
812− DropdownMenuItem(
813− text = { Text(stopShareLabel) },
814− onClick = { showOverflowMenu = false; vm.unshareSession() },
815− )
816− }
817− DropdownMenuItem(
818− text = { Text(summarizeLabel) },
819− enabled = hasMessages && !running,
820− onClick = { showOverflowMenu = false; showSummarizeConfirm = true },
821− )
822− DropdownMenuItem(
823− text = { Text(initLabel) },
824− enabled = !running,
825− onClick = { showOverflowMenu = false; showInitConfirm = true },
826− )
827− DropdownMenuItem(
828− text = { Text(shellLabel) },
829− enabled = !running,
830− onClick = { showOverflowMenu = false; showShellDialog = true },
831− )
832− androidx.compose.material3.HorizontalDivider()
833− DropdownMenuItem(
834− text = { Text(renameLabel) },
835− onClick = { showOverflowMenu = false; showRenameDialog = true },
836− )
837− DropdownMenuItem(
838− text = { Text(deleteLabel, color = MaterialTheme.colorScheme.error) },
839− onClick = { showOverflowMenu = false; showDeleteDialog = true },
840− )
841− }
842− // While a catalog is initially loading (empty list + loading flag),
843− // show a tiny inline spinner beside the overflow so the user can see
844− // a load is in progress without opening the menu. Once loaded the
845− // spinner disappears; the menu items are always enabled (tapping a
846− // picker with no items shows the "no models/agents/commands" state).
847− val catalogLoading = (commandsLoading && commands.isEmpty()) ||
848− (agentsLoading && agents.isEmpty()) ||
849− (modelsLoading && models.isEmpty())
850− if (catalogLoading) {
851− CircularProgressIndicator(
852− Modifier
853− .align(Alignment.TopEnd)
854− .size(10.dp)
855− .semantics { contentDescription = loadingLabel },
856− strokeWidth = 1.dp,
857− )
858− }
859− }
860− },
861− )
862− },
863− snackbarHost = { SnackbarHost(snackbar) },
864− bottomBar = {
865− val queuedFollowUp by vm.queuedFollowUp.collectAsStateWithLifecycle()
866− val todoPlan by vm.todoPlan.collectAsStateWithLifecycle()
867− val queuedOffline by vm.outbox.collectAsStateWithLifecycle()
868− val outboxSending by container.outboxSending.collectAsStateWithLifecycle()
869− Column {
870− // Pinned above the composer so the agent's plan and progress stay visible
871− // while scrolled up mid-run; renders nothing when there's no plan.
872− TodoPlanBar(todoPlan)
873− val bannerMotion = rememberVisibilityTransitions()
874− AnimatedVisibility(
875− visible = reverted,
876− enter = bannerMotion.enter,
877− exit = bannerMotion.exit,
878− ) {
879− RevertBanner(
880− diff = revertDiff,
881− isEditing = editing,
882− onUndo = { vm.unrevert() },
883− )
884− }
885− AnimatedVisibility(
886− visible = queuedOffline.isNotEmpty(),
887− enter = bannerMotion.enter,
888− exit = bannerMotion.exit,
889− ) {
890− OutboxBanner(
891− count = queuedOffline.size,
892− sending = outboxSending,
893− onFlush = { vm.flushQueued() },
894− onDiscard = { vm.discardAllQueued() },
895− )
896− }
897− AnimatedVisibility(
898− visible = pendingQuote != null,
899− enter = bannerMotion.enter,
900− exit = bannerMotion.exit,
901− ) {
902− pendingQuote?.let { QuoteReplyBanner(it, onCancel = { vm.cancelQuoteReply() }) }
903− }
904− ChatInputBar(
905− value = draft,
906− onValueChange = vm::updateDraft,
907− running = running,
908− aborting = aborting,
909− enabled = activeConnection != null,
910− sendOnEnter = sendOnEnter,
911− onSend = ::doSend,
912− onAbort = { vm.abort() },
913− queuedFollowUp = queuedFollowUp,
914− onQueueFollowUp = vm::queueFollowUp,
915− onCancelQueue = { vm.queueFollowUp("") },
916− focusRequester = inputFocusRequester,
917− attachments = attachments,
918− staging = stagingCount > 0,
919− stagingFileCount = stagingFileTotal,
920− onRemoveAttachment = vm::removeAttachment,
921− onPickPhoto = {
922− photoPicker.launch(
923− PickVisualMediaRequest(ActivityResultContracts.PickVisualMedia.ImageOnly),
924− )
925− },
926− onPickFile = { filePicker.launch("*/*") },
927− onCamera = { launchCamera() },
928− onVoice = { launchVoice() },
929− onPasteImage = { stageUris(it) },
930− commands = commands,
931− onRunCommand = { cmd ->
932− vm.runCommand(cmd)
933− // Clear the draft so the typed /prefix doesn't linger after the
934− // command fires (the command picker confirmation, if any, is
935− // handled inside runCommand).
936− vm.updateDraft("")
937− },
938− )
939− }
940− },
941− ) { padding ->
942− // Collect messages inside the content lambda so streaming token updates
943− // recompose only this subtree, not the top bar / input bar / 20+ other
944− // state reads in the ChatScreen body.
945− val messages by vm.messages.collectAsStateWithLifecycle()
946− val optimisticStatuses by vm.optimisticStatuses.collectAsStateWithLifecycle()
947− val listState = rememberLazyListState()
948− val contentScope = rememberCoroutineScope()
949− val timeTick = rememberRelativeTimeTick()
950− // Dismiss the soft keyboard when the user scrolls the message list, a standard Android
951− // chat affordance for reading while the IME is open. Watching isScrollInProgress via
952− // snapshotFlow avoids wiring a nested scroll connection and fires on any scroll gesture.
953− val keyboardController = androidx.compose.ui.platform.LocalSoftwareKeyboardController.current
954− androidx.compose.runtime.LaunchedEffect(listState) {
955− androidx.compose.runtime.snapshotFlow { listState.isScrollInProgress }
956− .distinctUntilChanged()
957− .collect { scrolling -> if (scrolling) keyboardController?.hide() }
958− } // Group messages by day and interleave date separators so a long conversation
959− // has visual "Today"/"Yesterday"/date breaks. Computed once per messages
960− // emission (memoized) so a scroll-induced recomposition doesn't re-scan. Lives
961− // outside the PullToRefreshBox so the auto-scroll effects below can reference
962− // the same list the LazyColumn renders (separators shift the indices vs. the
963− // raw messages list, so scroll targets must be in listItems space).
964− val todayLabel = stringResource(R.string.today)
965− val yesterdayLabel = stringResource(R.string.yesterday)
966− // In-conversation search: when active, narrow to messages whose text contains the query.
967− // Computed on the filtered set so day separators still align with the visible messages.
968− // Debounced + off-main-thread so a keystroke-by-keystroke filter walk over a long
969− // conversation (with many tool parts whose state stringification is non-trivial)
970− // doesn't jank the UI. produceState yields the empty list immediately and publishes
971− // the filtered result once the debounce settles.
972− val searchQuery = chatSearch.trim()
973− val searchMessages by produceState(
974− initialValue = if (searchQuery.isEmpty()) messages else emptyList(),
975− messages,
976− searchQuery,
977− ) {
978− if (searchQuery.isEmpty()) {
979− value = messages
980− } else {
981− // Debounce: wait for the user to stop typing before running the filter,
982− // so each keystroke doesn't kick off a fresh scan.
983− kotlinx.coroutines.delay(NetworkConfig.chatSearchDebounceMs)
984− // Run the filter off the main thread — the walk stringifies tool state
985− // and scans every part of every message, which is non-trivial work for a
986− // long conversation.
987− value = withContext(Dispatchers.Default) {
988− messages.filter { m ->
989− m.parts.any { p ->
990− when (p) {
991− is TextPart -> p.text.contains(searchQuery, ignoreCase = true)
992− is ReasoningPart -> p.text.contains(searchQuery, ignoreCase = true)
993− is ToolPart -> {
994− // Match the tool name plus its running/completed/error text and the
995− // stringified input, so searching for an error string or a file the
996− // tool touched actually finds the message it appeared in.
997− p.tool.contains(searchQuery, ignoreCase = true) ||
998− (p.state is ToolRunning && p.state.title?.contains(searchQuery, ignoreCase = true) == true) ||
999− (p.state is ToolCompleted && (p.state.title?.contains(searchQuery, ignoreCase = true) == true ||
1000− p.state.output?.contains(searchQuery, ignoreCase = true) == true)) ||
1001− (p.state is ToolError && p.state.error?.contains(searchQuery, ignoreCase = true) == true) ||
1002− p.state.inputElement()?.toString()?.contains(searchQuery, ignoreCase = true) == true
1003− }
1004− is FilePart -> p.filename?.contains(searchQuery, ignoreCase = true) == true ||
1005− p.sourcePath?.contains(searchQuery, ignoreCase = true) == true
1006− else -> false
1007− }
1008− }
1009− }
1010− }
1011− }
1012− }
1013− // Keep the focused-match index in range as the query (and thus the match set) changes.
1014− // A new query resets to the first match; a shrunk set clamps to the last valid index.
1015− LaunchedEffect(searchQuery, searchMessages.size) {
1016− if (searchPos >= searchMessages.size) searchPos = 0
1017− }
1018− val listItems = remember(searchMessages, todayLabel, yesterdayLabel) {
1019− buildMessageListItems(searchMessages, todayLabel, yesterdayLabel)
1020− }
1021− // listItems is a plain (non-snapshot) local, rebuilt each recomposition. The
1022− // derivedStateOf and snapshotFlow lambdas below are created once (keyless
1023− // remember / LaunchedEffect(Unit)); reading `listItems` directly inside them
1024− // would capture the first composition's list — which is empty, since `messages`
1025− // starts empty — freezing it forever. That pinned isPinnedToBottom at true and
1026− // AutoScrollSignal.size at 0, breaking streaming auto-scroll and the
1027− // jump-to-latest FAB. rememberUpdatedState hands those lambdas a stable State
1028− // whose value tracks the latest list.
1029− val currentListItems by rememberUpdatedState(listItems)
1030−
1031− // New-content signal for the jump-to-latest FAB: counts how many new items arrived
1032− // while the user was scrolled away from the bottom, cleared once they return. A count
1033− // (vs. a bare dot) tells the user how much they missed at a glance.
1034− var newContentCount by remember { mutableIntStateOf(0) }
1035−
1036− val isPinnedToBottom by remember {
1037− derivedStateOf {
1038− val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
1039− // When a run is active, the LazyColumn has one trailing "__typing"
1040− // item after the last list item. Account for it so "pinned to bottom"
1041− // includes the working indicator — otherwise the pin check targets
1042− // listItems.lastIndex, the typing row sits just below the viewport,
1043− // and the user never sees the progress indicator even when pinned.
1044− val items = currentListItems
1045− val effectiveLast = if (running) items.size else items.lastIndex
1046− lastVisible >= effectiveLast || items.isEmpty()
1047− }
1048− }
1049−
1050− // Jump to the newest message once, when the conversation first loads. Guarded by a
1051− // saveable one-shot flag so it doesn't re-fire on recomposition after a config change
1052− // (rotation) — rememberLazyListState restores the user's scroll offset, and an
1053− // unconditional scrollToItem here would clobber it, snapping them back to the bottom.
1054− var didInitialScroll by rememberSaveable { mutableStateOf(false) }
1055− LaunchedEffect(listItems.isNotEmpty()) {
1056− if (listItems.isNotEmpty() && !didInitialScroll) {
1057− // When a run is active the LazyColumn has a trailing "__typing" row at
1058− // listItems.size; target it (not listItems.lastIndex) so deep-linking into a
1059− // running session lands truly pinned to bottom and streaming auto-scroll engages.
1060− listState.scrollToItem(if (running) listItems.size else listItems.lastIndex)
1061− didInitialScroll = true
1062− }
1063− }
1064−
1065− // When a run starts, the LazyColumn gains a trailing "__typing" row, so
1066− // effectiveLast jumps from listItems.lastIndex to listItems.size and the
1067− // isPinnedToBottom check flips to false the instant you send — freezing
1068− // auto-scroll. If the user was pinned to the last item just before the run
1069− // began, bring the typing row into view so the pin (and streaming follow) is
1070− // preserved. Guard on the raw last-visible index (isPinnedToBottom has already
1071− // recomputed to false by now) so we don't scroll when the user had scrolled up.
1072− LaunchedEffect(running) {
1073− if (running && listItems.isNotEmpty()) {
1074− val lastVisible = listState.layoutInfo.visibleItemsInfo.lastOrNull()?.index ?: -1
1075− if (lastVisible >= listItems.lastIndex) {
1076− runCatchingCancellable { listState.animateScrollToItem(listItems.size) }
1077− }
1078− }
1079− }
1080−
1081− // Scroll the focused search match into view whenever the user steps through results with
1082− // the up/down arrows. Resolves the filtered message to its slot in listItems (which
1083− // includes date separators) and animates there.
1084− LaunchedEffect(searchPos, searchQuery, listItems) {
1085− if (!searchActive || searchQuery.isEmpty()) return@LaunchedEffect
1086− val target = searchMessages.getOrNull(searchPos) ?: return@LaunchedEffect
1087− val index = listItems.indexOfFirst {
1088− it is MessageListItem.Message && it.message.info.id == target.info.id
1089− }
1090− if (index >= 0) runCatchingCancellable { listState.animateScrollToItem(index) }
1091− }
1092−
1093− // Global-search deep link: scroll to and briefly highlight the matched message. The
1094− // focus id is threaded through the chat route from GlobalSearchScreen. The highlight
1095− // clears itself after a short delay so the user can re-read the surrounding context
1096− // without a persistent marker. Runs once per focusMessageId (cleared on consume).
1097− var focusedMessageId by remember(focusMessageId) { mutableStateOf(focusMessageId) }
1098− LaunchedEffect(focusedMessageId, listItems) {
1099− val focus = focusedMessageId ?: return@LaunchedEffect
1100− if (listItems.isEmpty()) return@LaunchedEffect
1101− val index = listItems.indexOfFirst {
1102− it is MessageListItem.Message && it.message.info.id == focus
1103− }
1104− if (index < 0) return@LaunchedEffect
1105− runCatchingCancellable { listState.animateScrollToItem(index) }
1106− kotlinx.coroutines.delay(2500)
1107− focusedMessageId = null
1108− }
1109−
1110− // Scroll to bottom when the IME opens and the user was already pinned to bottom, so the
1111− // latest reply stays visible as the composer rises. Without this the IME can obscure the
1112− // last message even though the user was reading it a moment ago. WindowInsets.ime is a
1113− // @Composable property, so we read it inside a snapshotFlow registered in the composable
1114− // scope; the flow re-emits whenever the IME inset changes (open/close transitions).
1115− val density = androidx.compose.ui.platform.LocalDensity.current
1116− var wasImeOpen by remember { mutableStateOf(false) }
1117− val imeBottomPx = WindowInsets.ime.getBottom(density)
1118− androidx.compose.runtime.LaunchedEffect(imeBottomPx, listItems.isNotEmpty(), isPinnedToBottom) {
1119− if (listItems.isEmpty()) return@LaunchedEffect
1120− val imeOpen = imeBottomPx > 0
1121− // Scroll to bottom only on the open transition (not close) and only when the user
1122− // was already pinned to bottom — otherwise we'd yank them out of a mid-history read.
1123− val shouldScroll = imeOpen && !wasImeOpen && isPinnedToBottom
1124− if (shouldScroll) {
1125− runCatchingCancellable {
1126− listState.animateScrollToItem(if (running) listItems.size else listItems.lastIndex)
1127− }
1128− }
1129− wasImeOpen = imeOpen
1130− }
1131−
1132− LaunchedEffect(Unit) {
1133− var prevSize = 0
1134− var prevLen = 0
1135− snapshotFlow {
1136− // Track list size + the streaming length of the last part so we auto-scroll
1137− // as content arrives, plus the pinned flag. A small data class with primitive
1138− // fields avoids the per-frame boxing that Triple<Int,Int,Boolean> pays
1139− // (snapshotFlow re-evaluates this lambda every snapshot), and reading only the
1140− // last part's length is O(1) vs. a sumOf over every part. Covering reasoning
1141− // and tool output — not just TextPart — keeps a pinned view following a long
1142− // reasoning/tool block while it streams (previously it stalled at 0).
1143− val lastLen = streamingContentLength(messages.lastOrNull()?.parts?.lastOrNull())
1144− AutoScrollSignal(currentListItems.size, lastLen, isPinnedToBottom)
1145− }.collect { signal ->
1146− if (signal.pinned) {
1147− // Back at the bottom: clear the new-content badge.
1148− newContentCount = 0
1149− if (signal.size > 0) {
1150− // Scroll to the effective last index, including the trailing
1151− // "__typing" row when a run is active so the working indicator
1152− // is brought into view (not just the last message).
1153− val items = currentListItems
1154− val target = if (running) items.size else items.lastIndex
1155− listState.scrollToItem(target)
1156− }
1157− } else if (signal.size > prevSize || signal.lastTextLength > prevLen) {
1158− // Content arrived while scrolled up — increment the jump-to-latest badge.
1159− // Only count whole new items (not per-token growth) so the number reflects
1160− // new messages, not a token count.
1161− if (signal.size > prevSize) newContentCount += signal.size - prevSize
1162− else if (newContentCount == 0) newContentCount = 1
1163− }
1164− prevSize = signal.size
1165− prevLen = signal.lastTextLength
1166− }
1167− }
1168−
1169− CompositionLocalProvider(LocalRelativeTimeTick provides timeTick) {
1170− // The bottomBar (ChatInputBar) already has imePadding, and the Scaffold's
1171− // content padding accounts for the bottomBar's raised height, so the message
1172− // list is already above the keyboard. Adding imePadding here would double-apply
1173− // the IME inset and push messages too far up.
1174− //
1175− // BoxWithConstraints so the FABs and search bar can align to the capped (800dp)
1176− // message list on wide screens instead of floating at the screen edges — on a
1177− // tablet the list is a centered column, so edge-aligned FABs are visually detached.
1178− // The horizontal margin below is applied to the FAB/search containers so they
1179− // track the list's left/right edges.
1180− androidx.compose.foundation.layout.BoxWithConstraints(
1181− modifier = Modifier.fillMaxSize().padding(padding),
1182− ) {
1183− val screenMaxWidth = maxWidth
1184− val listMaxWidth = NetworkConfig.chatContentMaxWidthDp.dp
1185− // Horizontal margin between the capped list's edge and the screen edge (0 on
1186− // screens narrower than the cap). Applied as start/end padding so the FABs and
1187− // search bar sit at the list's edges, not the screen's.
1188− val sideMargin = ((screenMaxWidth - listMaxWidth) / 2).coerceAtLeast(0.dp)
1189− if (activeConnection == null) {
1190− Column(
1191− modifier = Modifier.align(Alignment.Center).padding(24.dp),
1192− horizontalAlignment = Alignment.CenterHorizontally,
1193− ) {
1194− Text(
1195− stringResource(R.string.not_connected),
1196− color = MaterialTheme.colorScheme.error,
1197− )
1198− Spacer(Modifier.size(12.dp))
1199− Button(onClick = { vm.reconnect() }, enabled = !reconnecting) {
1200− if (reconnecting) {
1201− CircularProgressIndicator(
1202− Modifier.size(20.dp),
1203− color = MaterialTheme.colorScheme.onPrimary,
1204− strokeWidth = 2.dp,
1205− )
1206− } else {
1207− Text(stringResource(R.string.reconnect))
1208− }
1209− }
1210− }
1211− } else {
1212− val bannerVisible = !isOnline || connectionState != EventStreamClient.ConnectionState.Connected
1213− // Measure the banner's actual height instead of hardcoding 44dp. At large
1214− // accessibility font scales the banner's labelMedium text + spinner + Retry
1215− // button exceed 44dp, so a fixed inset lets the first message hide behind it
1216− // (the same hazard FileViewScreen's overlay calls out). onSizeChanged only
1217− // fires while the banner is composed (visible), so gate the inset on
1218− // bannerVisible and fall back to 44dp until the first measurement arrives.
1219− var bannerHeightPx by remember { mutableIntStateOf(0) }
1220− // Track the search bar height so the list's top padding can grow when search
1221− // is active — otherwise a scrolled-to match lands at index 0, hidden behind
1222− // the floating search bar (the "scroll-under-the-search-bar" bug).
1223− var searchbarHeightPx by remember { mutableIntStateOf(0) }
1224− val density = LocalDensity.current
1225− val topPad = if (bannerVisible) {
1226− if (bannerHeightPx > 0) {
1227− with(density) { bannerHeightPx.toDp() } + 4.dp
1228− } else {
1229− 44.dp
1230− }
1231− } else {
1232− 16.dp
1233− } + if (searchActive && searchbarHeightPx > 0) {
1234− with(density) { searchbarHeightPx.toDp() } + 4.dp
1235− } else {
1236− 0.dp
1237− }
1238− ConnectionBanner(
1239− state = connectionState,
1240− modifier = Modifier.align(Alignment.TopCenter).onSizeChanged { bannerHeightPx = it.height },
1241− isOnline = isOnline,
1242− // On a hard endpoint failure, retry by forcing an SSE reconnect (which
1243− // re-seeds from REST). refreshMessages is the right recovery path
1244− // when the connection is present but the stream died; reconnect()
1245− // is the path when the whole connection is gone (handled by the
1246− // separate "Not connected" state below).
1247− onRetry = { vm.refreshMessages() },
1248− // On an auth failure (401/403), retrying with the same bad credentials
1249− // is futile — offer a one-tap path to edit the active profile's
1250− // credentials instead of making the user hunt for the server list.
1251− onEditCredentials = {
1252− val profileId = activeConnection?.profile?.id
1253− if (profileId != null) onEditProfile?.invoke(profileId)
1254− },
1255− reconnectAttempts = reconnectAttempts,
1256− )
1257− // Persistent inline error banner for a mid-conversation load failure.
1258− // Unlike the one-shot snackbar (which fires once per streak then goes
1259− // silent), this stays visible until the stream recovers, so a persistent
1260− // outage doesn't read as "everything is fine" after the snackbar dismisses.
1261− // Anchored at the top, below the connection banner, so it doesn't overlap
1262− // the message list.
1263− if (loadErrorInline && hasMessages) {
1264− Surface(
1265− color = MaterialTheme.colorScheme.errorContainer,
1266− shape = MaterialTheme.shapes.small,
1267− modifier = Modifier
1268− .align(Alignment.TopCenter)
1269− .padding(top = if (bannerVisible) topPad else 8.dp)
1270− .padding(horizontal = 16.dp)
1271− .semantics { liveRegion = LiveRegionMode.Polite },
1272− ) {
1273− Row(
1274− modifier = Modifier.padding(horizontal = 12.dp, vertical = 8.dp),
1275− verticalAlignment = Alignment.CenterVertically,
1276− horizontalArrangement = Arrangement.spacedBy(8.dp),
1277− ) {
1278− Icon(
1279− Icons.Filled.ErrorOutline,
1280− contentDescription = null,
1281− modifier = Modifier.size(16.dp),
1282− tint = MaterialTheme.colorScheme.onErrorContainer,
1283− )
1284− Text(
1285− stringResource(R.string.load_error_persistent),
1286− style = MaterialTheme.typography.labelMedium,
1287− color = MaterialTheme.colorScheme.onErrorContainer,
1288− modifier = Modifier.weight(1f),
1289− )
1290− TextButton(
1291− onClick = { vm.refreshMessages() },
1292− contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = 8.dp),
1293− ) {
1294− Text(stringResource(R.string.retry))
1295− }
1296− }
1297− }
1298− }
1299− // Pull-to-refresh wraps ALL content states (loading, error, empty, list) so
1300− // recovery is a swipe away everywhere — not just when the message list is
1301− // populated. Previously PTR was only around the populated list, leaving the
1302− // error/loading states reachable only via a button tap.
1303− PullToRefreshBox(
1304− isRefreshing = refreshing,
1305− onRefresh = { vm.refreshMessages() },
1306− // Cap width and center on large screens for readability — full-width
1307− // bubbles stretch edge-to-edge on tablets, hurting line-length comfort.
1308− modifier = Modifier.fillMaxSize().wrapContentWidth(Alignment.CenterHorizontally)
1309− .widthIn(max = NetworkConfig.chatContentMaxWidthDp.dp),
1310− ) {
1311− // Reserve top space when the banner is visible so it doesn't overlap the
1312− // first message / state content. (topPad computed above.)
1313− if (loading && messages.isEmpty()) {
1314− // Skeleton bubbles pre-structure the layout so the perceived load is faster
1315− // than a bare centered spinner and the first real messages pop into an
1316− // already-shaped list instead of a blank-then-pop.
1317− ChatSkeleton(topPad = topPad)
1318− } else if (loadError && messages.isEmpty()) {
1319− // A failed load with nothing to show. Distinct from the empty
1320− // conversation state below — the conversation isn't empty, it
1321− // failed to load, and offering "Start a conversation" here is
1322− // misleading. Offer a Retry instead, mirroring SessionListScreen.
1323− Column(
1324− modifier = Modifier.align(Alignment.Center).padding(top = topPad).padding(24.dp),
1325− horizontalAlignment = Alignment.CenterHorizontally,
1326− ) {
1327− Text(
1328− stringResource(R.string.load_messages_failed),
1329− color = MaterialTheme.colorScheme.error,
1330− )
1331− Spacer(Modifier.size(12.dp))
1332− Button(onClick = { vm.refreshMessages() }) {
1333− Text(stringResource(R.string.retry))
1334− }
1335− // When the VM's retryWhen loop is actively retrying (loading is true
1336− // on top of the error state), surface a small "retrying…" indicator so
1337− // the user knows the system is working — without it, the static error
1338− // + Retry button reads as "broken, tap to fix", and the user may not
1339− // realize an automatic retry is already in progress.
1340− if (loading) {
1341− Spacer(Modifier.size(12.dp))
1342− val retryingLabel = stringResource(R.string.retrying_ellipsis)
1343− Row(verticalAlignment = Alignment.CenterVertically) {
1344− CircularProgressIndicator(
1345− Modifier.size(14.dp),
1346− strokeWidth = 2.dp,
1347− )
1348− Text(
1349− retryingLabel,
1350− style = MaterialTheme.typography.labelSmall,
1351− color = MaterialTheme.colorScheme.onSurfaceVariant,
1352− modifier = Modifier.padding(start = 6.dp),
1353− )
1354− }
1355− }
1356− }
1357− } else if (messages.isEmpty() && running) {
1358− // A run just started but no parts have arrived yet — the empty list with
1359− // only the trailing "working…" row looks broken. Reuse the skeleton bubbles
1360− // from the initial-load branch so the perceived start latency is lower and
1361− // the first real assistant part pops into an already-shaped list.
1362− ChatSkeleton(topPad = topPad)
1363− } else if (messages.isEmpty()) {
1364− EmptyConversation(
1365− onSuggestion = {
1366− vm.updateDraft(it)
1367− // Focus the input so the user can edit the suggestion before
1368− // sending, instead of having to manually tap the field.
1369− runCatching { inputFocusRequester.requestFocus() }
1370− },
1371− modifier = Modifier.align(Alignment.Center).padding(top = topPad),
1372− )
1373− } else {
1374− val lastMessageId = messages.lastOrNull()?.info?.id
1375− // Text-to-speech for reading assistant replies aloud; shuts down when the
1376− // message list leaves composition.
1377− val tts = rememberTtsController()
1378− val speakingMessageId by tts.speakingId
1379− val ttsState by tts.state
1380− // Provide the in-conversation search query to the markdown renderer so matching
1381− // text spans are highlighted in-place (in addition to the focused-row highlight
1382− // above). Scoped to the list so cleared search stops highlighting immediately.
1383− val activeSearchQuery = searchQuery.takeIf { searchActive && it.isNotEmpty() }
1384− CompositionLocalProvider(LocalSearchHighlight provides activeSearchQuery) {
1385− LazyColumn(
1386− state = listState,
1387− modifier = Modifier.fillMaxSize(),
1388− // Extra bottom padding reserves room for the jump-to-latest FAB so it
1389− // never floats over the last message. Top padding grows when the
1390− // connection banner is visible so it doesn't overlap the first message.
1391− contentPadding = PaddingValues(
1392− start = 16.dp,
1393− top = topPad,
1394− end = 16.dp,
1395− bottom = 16.dp + NetworkConfig.chatListFabInsetDp.dp,
1396− ),
1397− // Compact spacing (8dp) vs the default 16dp — a power-user toggle to fit
1398− // more conversation on screen without scrolling as much.
1399− verticalArrangement = Arrangement.spacedBy(if (compactSpacing) 8.dp else 16.dp),
1400− ) {
1401− items(
1402− items = listItems,
1403− key = { it.key },
1404− contentType = { it.contentType },
1405− ) { item ->
1406− // When in-conversation search is stepping through matches, highlight the
1407− // focused one's row so the user can spot it at a glance among the filtered
1408− // results (full in-text term highlighting would require threading the query
1409− // through the markdown renderer; the row highlight + scroll-to-match covers
1410− // the navigation use case desktop chat apps solve with next/prev).
1411− val focusedMatchId = if (searchActive && searchQuery.isNotEmpty()) {
1412− searchMessages.getOrNull(searchPos)?.info?.id
1413− } else null
1414− val isFocusedMatch = focusedMatchId != null &&
1415− item is MessageListItem.Message &&
1416− item.message.info.id == focusedMatchId
1417− // Default placement animation so inserted/moved rows glide in. Skipped
1418− // entirely under reduced motion so a streaming message growing in place
1419− // doesn't animate on every token (and respects the a11y preference).
1420− Box(
1421− Modifier
1422− .then(reducedMotionAnimateItem())
1423− .then(
1424− if (isFocusedMatch) {
1425− Modifier.background(
1426− MaterialTheme.colorScheme.secondaryContainer,
1427− MaterialTheme.shapes.medium,
1428− )
1429− } else {
1430− Modifier
1431− },
1432− ),
1433− ) {
1434− when (item) {
1435− is MessageListItem.Separator -> DateSeparator(item.label)
1436− is MessageListItem.Message -> {
1437− val message = item.message
1438− // Only the last (streaming) message needs isRunning — it drives the
1439− // reasoning-block spinner. Passing the live flag to every bubble
1440− // makes all visible messages recompose whenever a run starts or stops.
1441− val modelLabel = remember(message.info, models) {
1442− (message.info as? soy.iko.opencode.data.model.AssistantMessage)
1443− ?.let { resolveModelLabel(it, models) }
1444− }
1445− val agentLabel = remember(message.parts) {
1446− message.parts
1447− .filterIsInstance<soy.iko.opencode.data.model.AgentPart>()
1448− .firstOrNull { it.name.isNotBlank() }?.name
1449− }
1450− // Text used to drive swipe-to-reply (and pre-fill the quote). Empty for
1451− // image/code-only messages, which then opt out of the swipe gesture.
1452− val quoteText = remember(message.parts) {
1453− message.parts
1454− .filterIsInstance<TextPart>()
1455− .joinToString("\n\n") { it.text }
1456− .trim()
1457− .takeIf { it.isNotEmpty() }
1458− }
1459− // Swipe-start-to-end reveals a reply affordance and triggers quote-reply,
1460− // snapping back (the message isn't dismissed — the quote fills the composer).
1461− // Enabled for non-text messages too (image/tool-only), but the confirm
1462− // callback gives a haptic without triggering reply — so the user gets a
1463− // perceptible "can't quote this" signal instead of a silently dead gesture.
1464− val cantQuoteMsg = stringResource(R.string.cannot_quote_this)
1465− val swipeState = rememberSwipeToDismissBoxState(
1466− confirmValueChange = { value ->
1467− val replyValue = if (layoutDirection == LayoutDirection.Rtl) {
1468− SwipeToDismissBoxValue.EndToStart
1469− } else {
1470− SwipeToDismissBoxValue.StartToEnd
1471− }
1472− if (value == replyValue) {
1473− if (quoteText != null) {
1474− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1475− vm.quoteReply(quoteText)
1476− runCatching { inputFocusRequester.requestFocus() }
1477− } else {
1478− // Non-text message: give a longer haptic so the user
1479− // feels the gesture was received but can't quote it,
1480− // and surface a brief toast so the reason is clear.
1481− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
1482− scope.launch { snackbar.showSnackbar(cantQuoteMsg) }
1483− }
1484− }
1485− false
1486− },
1487− )
1488− // In RTL locales, mirror the swipe direction so the reply
1489− // gesture reads naturally (swipe from the trailing edge
1490− // toward the leading edge), matching how LTR users swipe
1491− // left-to-right. Without this, RTL users had no reply swipe.
1492− val replyFromStartToEnd = layoutDirection != LayoutDirection.Rtl
1493− SwipeToDismissBox(
1494− state = swipeState,
1495− enableDismissFromEndToStart = !replyFromStartToEnd,
1496− enableDismissFromStartToEnd = replyFromStartToEnd,
1497− backgroundContent = {
1498− Box(
1499− Modifier.fillMaxSize().padding(horizontal = 16.dp),
1500− contentAlignment = if (replyFromStartToEnd) Alignment.CenterStart else Alignment.CenterEnd,
1501− ) {
1502− Icon(
1503− Icons.AutoMirrored.Filled.Reply,
1504− contentDescription = null,
1505− tint = MaterialTheme.colorScheme.onSurfaceVariant,
1506− )
1507− }
1508− },
1509− ) {
1510− MessageBubble(
1511− message,
1512− isRunning = running && message.info.id == lastMessageId,
1513− imageContext = imageContext,
1514− modelLabel = modelLabel,
1515− agentLabel = agentLabel,
1516− onOpenFile = onOpenFile,
1517− onRevert = { vm.revertTo(message.info.id) },
1518− onEdit = { text -> // editMessage reverts to before this message (hiding it and
1519− // everything after); the revert banner surfaces the rewind
1520− // with an Undo. Focus + scroll the composer into view like the
1521− // Quote action so the prefilled draft isn't off-screen.
1522− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1523− vm.editMessage(message.info.id, text)
1524− runCatching { inputFocusRequester.requestFocus() }
1525− contentScope.launch {
1526− runCatchingCancellable {
1527− listState.animateScrollToItem(listItems.lastIndex.coerceAtLeast(0))
1528− }
1529− }
1530− },
1531− onSpeak = { text ->
1532− if (!tts.toggle(message.info.id, text)) {
1533− // TTS engine unavailable (init failed / not yet ready
1534− // / blank text): surface feedback so the button doesn't
1535− // appear dead. Throttled so a rapid double-tap (stop
1536− // then immediate re-tap before ready) doesn't spam.
1537− scope.launch { snackbar.showSnackbar(ttsUnavailableMsg) }
1538− }
1539− },
1540− isSpeaking = message.info.id == speakingMessageId,
1541− ttsState = if (message.info.id == speakingMessageId) ttsState else TtsState.IDLE,
1542− onPause = { tts.pause() },
1543− onResume = { tts.resume() },
1544− onStop = { tts.stop() },
1545− onQuote = { text ->
1546− vm.quoteReply(text)
1547− runCatching { inputFocusRequester.requestFocus() }
1548− },
1549− onBranch = { text -> vm.branchFrom(text) },
1550− // Regenerate is only meaningful for a finished assistant reply
1551− // (not the actively-streaming one), so gate it on !running.
1552− onRegenerate = if (!running) {
1553− { vm.regenerate(message.info.id) }
1554− } else null,
1555− // Continue: resume a partial reply. Shown only for
1556− // incomplete assistant messages (a partial reply that
1557− // was aborted) and not while a run is active.
1558− onContinue = if (!running && message.info is AssistantMessage && !message.info.isComplete) {
1559− { vm.continueRun(message.info.id) }
1560− } else null,
1561− sendStatus = optimisticStatuses[message.info.id]?.let { failed ->
1562− if (failed) soy.iko.opencode.ui.chat.MessageSendStatus.FAILED
1563− else soy.iko.opencode.ui.chat.MessageSendStatus.SENDING
1564− },
1565− isEdited = message.info.time?.let { it.updated != null && it.updated != it.created } == true,
1566− onRetry = optimisticStatuses[message.info.id]?.let { failed ->
1567− if (failed) {
1568− { vm.retryOptimisticMessage(message.info.id) }
1569− } else {
1570− null
1571− }
1572− },
1573− onDismiss = optimisticStatuses[message.info.id]?.let { failed ->
1574− if (failed) {
1575− { vm.dismissOptimistic(message.info.id) }
1576− } else {
1577− null
1578− }
1579− },
1580− onShare = {
1581− // Per-message share: build a single-message Markdown
1582− // transcript off-thread and fire ACTION_SEND, mirroring the
1583− // whole-conversation share but scoped to just this message.
1584− scope.launch {
1585− val md = withContext(Dispatchers.Default) {
1586− buildMessageMarkdown(message)
1587− } ?: return@launch
1588− val send = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
1589− type = "text/markdown"
1590− putExtra(android.content.Intent.EXTRA_SUBJECT, sessionTitle ?: defaultShareSubject)
1591− putExtra(android.content.Intent.EXTRA_TEXT, md)
1592− }
1593− runCatchingCancellable { shareContext.startActivity(android.content.Intent.createChooser(send, shareContext.getString(R.string.share_message))) }
1594− .onFailure { showToast(shareContext, shareContext.getString(R.string.no_share_app)) }
1595− }
1596− },
1597− isFirstOfSpeaker = item.isFirstOfSpeaker,
1598− highlighted = focusedMessageId != null && message.info.id == focusedMessageId,
1599− )
1600− }
1601− }
1602− }
1603− }
1604− }
1605− if (running) {
1606− item(key = "__typing") {
1607− val workingText = stringResource(R.string.working)
1608− // When the SSE stream dropped mid-run, show a "reconnecting" label
1609− // instead of the plain "working" text so the user understands the
1610− // run is still active but the stream is reconnecting (not finished).
1611− val reconnectingText = stringResource(R.string.reconnecting)
1612− val interruptedLabel = if (streamInterrupted) reconnectingText else workingText
1613− // Elapsed-since-run chip driven by the VM's runStartMs so the timer
1614− // survives LazyColumn recycling — a local remember reset to 0:00 when
1615− // the row was disposed and scrolled back into view. The VM stamps the
1616− // start on the real false→true transition (send/run/init), not on
1617− // SSE-reconnect relight, so reconnects don't restart the clock. Updates
1618− // once per second; the value is decorative (the a11y label is the row's).
1619− // The clock freezes when an abort is confirmed (aborting = true) so the
1620− // user can see how long the run lasted before they stopped it, rather
1621− // than the clock continuing to tick until SessionIdle clears _running.
1622− val startMs by vm.runStartMs.collectAsStateWithLifecycle()
1623− val elapsedMs by produceState(0L, startMs, aborting) {
1624− if (startMs == 0L) return@produceState
1625− if (aborting) {
1626− // Freeze at the last-computed value: one final snapshot then stop.
1627− value = (System.currentTimeMillis() - startMs).coerceAtLeast(0L)
1628− return@produceState
1629− }
1630− while (true) {
1631− value = (System.currentTimeMillis() - startMs).coerceAtLeast(0L)
1632− delay(1000)
1633− }
1634− }
1635− val elapsedText = remember(elapsedMs) {
1636− val total = elapsedMs / 1000
1637− // Locale.US for stable digit formatting: on locales with
1638− // non-ASCII digits (ar-/fa-) the default locale would render
1639− // localized digits inside the Monospace block, breaking the
1640− // fixed-width alignment the monospace family was chosen for.
1641− String.format(java.util.Locale.US, "%d:%02d", total / 60, total % 60)
1642− }
1643− Row(
1644− verticalAlignment = Alignment.CenterVertically,
1645− // Animate this slot in/out so the working row doesn't pop in and
1646− // jolt the message list when a run starts/stops — matching the
1647− // AnimatedVisibility used by every other transient banner/FAB here.
1648− modifier = Modifier
1649− .then(reducedMotionAnimateItem())
1650− .padding(vertical = 4.dp),
1651− ) {
1652− // Merge the indicator + label + clock into one TalkBack node so
1653− // it's announced once (the working label, then the elapsed time)
1654− // instead of "working… / working… / 0:14" with the label read
1655− // twice. The Stop IconButton below stays separately focusable.
1656− Row(
1657− verticalAlignment = Alignment.CenterVertically,
1658− modifier = Modifier.semantics(mergeDescendants = true) {
1659− contentDescription = "$interruptedLabel $elapsedText"
1660− },
1661− ) {
1662− // Dim the spinner when interrupted so the row reads as
1663− // "paused/reconnecting" rather than actively progressing.
1664− CircularProgressIndicator(
1665− Modifier.size(16.dp),
1666− strokeWidth = 2.dp,
1667− color = if (streamInterrupted) MaterialTheme.colorScheme.onSurfaceVariant
1668− else MaterialTheme.colorScheme.primary,
1669− )
1670− Text(interruptedLabel, style = MaterialTheme.typography.labelMedium, modifier = Modifier.padding(start = 6.dp))
1671− Spacer(Modifier.size(8.dp))
1672− Icon(
1673− Icons.Filled.Schedule,
1674− contentDescription = null,
1675− modifier = Modifier.size(14.dp),
1676− tint = MaterialTheme.colorScheme.onSurfaceVariant,
1677− )
1678− Text(
1679− elapsedText,
1680− style = MaterialTheme.typography.labelMedium,
1681− fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
1682− color = MaterialTheme.colorScheme.onSurfaceVariant,
1683− modifier = Modifier.padding(start = 4.dp),
1684− )
1685− }
1686− // A trailing Stop on the working row so the run can be aborted
1687− // without scrolling back to the composer (which may be off-screen
1688− // while the user reads the streaming output up-thread).
1689− Spacer(Modifier.weight(1f))
1690− val stopLabel = stringResource(R.string.stop)
1691− IconButton(
1692− onClick = { vm.abort() },
1693− modifier = Modifier.semantics { contentDescription = stopLabel },
1694− ) {
1695− Icon(Icons.Filled.Stop, contentDescription = null)
1696− }
1697− }
1698− }
1699− }
1700− }
1701− }
1702− }
1703− }
1704− // Jump-to-latest affordance when the user has scrolled away during a stream.
1705− val fabMotion = rememberVisibilityTransitions()
1706− AnimatedVisibility(
1707− visible = !isPinnedToBottom && listItems.isNotEmpty(),
1708− enter = fabMotion.enter,
1709− exit = fabMotion.exit,
1710− // Inset by sideMargin on wide screens so the FAB tracks the capped list's
1711− // edge instead of floating at the screen edge (visually detached on tablets).
1712− modifier = Modifier.align(Alignment.BottomEnd).padding(end = sideMargin),
1713− ) {
1714− // Badge the FAB when new content arrived while the user was scrolled up, so
1715− // they know there's something new to jump to (cleared once back at bottom).
1716− BadgedBox(
1717− badge = {
1718− if (newContentCount > 0) {
1719− // Merge the count into the badge announcement so TalkBack reads
1720− // "5 new messages" instead of the bare label and a separate number.
1721− val newContentLabel = pluralStringResource(
1722− R.plurals.plurals_new_messages,
1723− newContentCount,
1724− newContentCount,
1725− )
1726− Badge(modifier = Modifier.semantics { contentDescription = newContentLabel }) {
1727− Text(
1728− if (newContentCount > 99) "99+" else newContentCount.toString(),
1729− modifier = Modifier.semantics { invisibleToUser() },
1730− )
1731− }
1732− }
1733− },
1734− modifier = Modifier.padding(end = 16.dp, bottom = 16.dp),
1735− ) {
1736− ExtendedFloatingActionButton(
1737− onClick = {
1738− newContentCount = 0
1739− if (listItems.isNotEmpty()) {
1740− // Scroll to the effective last index, including the
1741− // trailing "__typing" row when a run is active.
1742− val target = if (running) listItems.size else listItems.lastIndex
1743− contentScope.launch { runCatchingCancellable { listState.animateScrollToItem(target) } }
1744− }
1745− },
1746− // contentDescription null: the visible "Latest" text already labels
1747− // the FAB, so a description here makes TalkBack announce "Latest" twice.
1748− icon = { Icon(Icons.Filled.KeyboardArrowDown, contentDescription = null) },
1749− text = { Text(stringResource(R.string.latest)) },
1750− )
1751− }
1752− }
1753− // Scroll-to-top affordance: a small FAB at the start edge, visible when the
1754− // user has scrolled down past the first few messages. Symmetric to the
1755− // jump-to-latest FAB, for long conversations where manual fling back is tedious.
1756− val scrolledDown by remember {
1757− derivedStateOf { listState.firstVisibleItemIndex > 0 || listState.firstVisibleItemScrollOffset > 200 }
1758− }
1759− AnimatedVisibility(
1760− visible = scrolledDown && listItems.size > 4,
1761− enter = fabMotion.enter,
1762− exit = fabMotion.exit,
1763− modifier = Modifier.align(Alignment.BottomStart).padding(start = sideMargin),
1764− ) {
1765− SmallFloatingActionButton(
1766− onClick = {
1767− contentScope.launch { runCatchingCancellable { listState.animateScrollToItem(0) } }
1768− },
1769− modifier = Modifier.padding(start = 16.dp, bottom = 16.dp),
1770− ) {
1771− Icon(
1772− Icons.Filled.KeyboardArrowUp,
1773− contentDescription = stringResource(R.string.scroll_to_top),
1774− )
1775− }
1776− }
1777− // In-conversation search bar. Overlays the list so typing filters messages in
1778− // place; the match count + a no-matches note give immediate feedback.
1779− val searchMotion = rememberVisibilityTransitions()
1780− AnimatedVisibility(
1781− visible = searchActive,
1782− enter = searchMotion.enter,
1783− exit = searchMotion.exit,
1784− // Inset by sideMargin on wide screens so the search bar spans the capped
1785− // list's width, not the full screen width.
1786− modifier = Modifier.align(Alignment.TopCenter).padding(horizontal = sideMargin),
1787− ) {
1788− Surface(
1789− tonalElevation = 3.dp,
1790− modifier = Modifier
1791− .padding(horizontal = 12.dp, vertical = 4.dp)
1792− .fillMaxWidth()
1793− .onSizeChanged { searchbarHeightPx = it.height },
1794− ) {
1795− // Focus the search field when the bar appears (from the overflow menu's
1796− // "Find in conversation" or Ctrl+F), so the user can start typing
1797− // immediately. Runs after the search field enters the composition.
1798− LaunchedEffect(searchActive) {
1799− if (searchActive) runCatching { searchFocusRequester.requestFocus() }
1800− }
1801− Row(
1802− modifier = Modifier.padding(start = 8.dp, end = 4.dp),
1803− verticalAlignment = Alignment.CenterVertically,
1804− ) {
1805− OutlinedTextField(
1806− value = chatSearch,
1807− onValueChange = { chatSearch = it },
1808− modifier = Modifier.weight(1f).focusRequester(searchFocusRequester),
1809− placeholder = { Text(stringResource(R.string.search_in_conversation)) },
1810− singleLine = true,
1811− leadingIcon = { Icon(Icons.Filled.Search, contentDescription = null) },
1812− keyboardOptions = KeyboardOptions(imeAction = ImeAction.Search),
1813− )
1814− // Match counter: "N of M" where N is the focused match (1-based) and
1815− // M is the total matching messages. Only shown when there's a query.
1816− val matchCount = searchMessages.size
1817− Text(
1818− if (searchQuery.isNotEmpty() && matchCount > 0) {
1819− stringResource(R.string.search_match_count, searchPos + 1, matchCount)
1820− } else if (searchQuery.isNotEmpty()) {
1821− stringResource(R.string.search_no_matches)
1822− } else "",
1823− style = MaterialTheme.typography.labelSmall,
1824− color = MaterialTheme.colorScheme.onSurfaceVariant,
1825− modifier = Modifier
1826− .padding(horizontal = 4.dp)
1827− // Live region so a TalkBack user hears "3 of 12" / "No
1828− // matches" announce as they step through results, not just
1829− // the sighted user seeing the counter update.
1830− .semantics { liveRegion = androidx.compose.ui.semantics.LiveRegionMode.Polite },
1831− )
1832− // Step through matches (Previous / Next), disabled when there are
1833− // fewer than two to navigate. Wrap around at the ends so repeated
1834− // taps cycle through every hit.
1835− val prevLabel = stringResource(R.string.find_previous)
1836− val nextLabel = stringResource(R.string.find_next)
1837− IconButton(
1838− onClick = {
1839− if (matchCount > 0) {
1840− searchPos = (searchPos - 1 + matchCount) % matchCount
1841− }
1842− },
1843− enabled = matchCount > 1,
1844− ) {
1845− Icon(Icons.Filled.KeyboardArrowUp, contentDescription = prevLabel)
1846− }
1847− IconButton(
1848− onClick = {
1849− if (matchCount > 0) {
1850− searchPos = (searchPos + 1) % matchCount
1851− }
1852− },
1853− enabled = matchCount > 1,
1854− ) {
1855− Icon(Icons.Filled.KeyboardArrowDown, contentDescription = nextLabel)
1856− }
1857− IconButton(onClick = {
1858− searchActive = false
1859− chatSearch = ""
1860− }) {
1861− Icon(Icons.Filled.Close, contentDescription = stringResource(R.string.clear_search))
1862− }
1863− }
1864− }
1865− }
1866− // When a search yields no matches (but the conversation isn't empty), say so
1867− // instead of showing a blank list.
1868− if (searchActive && searchQuery.isNotEmpty() && searchMessages.isEmpty() && messages.isNotEmpty()) {
1869− Text(
1870− stringResource(R.string.search_no_matches),
1871− style = MaterialTheme.typography.bodyMedium,
1872− color = MaterialTheme.colorScheme.onSurfaceVariant,
1873− modifier = Modifier.align(Alignment.Center),
1874− )
1875− }
1876− }
1877− }
1878− }
1879− }
1880−
1881− if (showExitConfirm) {
1882− AlertDialog(
1883− onDismissRequest = { showExitConfirm = false },
1884− title = { Text(stringResource(R.string.stop_and_exit_title)) },
1885− text = { Text(stringResource(R.string.stop_and_exit_text)) },
1886− confirmButton = {
1887− TextButton(onClick = {
1888− showExitConfirm = false
1889− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
1890− vm.abort()
1891− onBack()
1892− }) { Text(stringResource(R.string.stop_and_exit)) }
1893− },
1894− dismissButton = {
1895− TextButton(onClick = { showExitConfirm = false }) { Text(stringResource(R.string.stay)) }
1896− },
1897− )
1898− }
1899−
1900− if (showSummarizeConfirm) {
1901− AlertDialog(
1902− onDismissRequest = { showSummarizeConfirm = false },
1903− title = { Text(stringResource(R.string.summarize_confirm_title)) },
1904− text = { Text(stringResource(R.string.summarize_confirm_text)) },
1905− confirmButton = {
1906− TextButton(onClick = {
1907− showSummarizeConfirm = false
1908− vm.summarize()
1909− }) { Text(stringResource(R.string.action_continue)) }
1910− },
1911− dismissButton = {
1912− TextButton(onClick = { showSummarizeConfirm = false }) { Text(stringResource(R.string.cancel)) }
1913− },
1914− )
1915− }
1916−
1917− if (showInitConfirm) {
1918− AlertDialog(
1919− onDismissRequest = { showInitConfirm = false },
1920− title = { Text(stringResource(R.string.init_confirm_title)) },
1921− text = { Text(stringResource(R.string.init_confirm_text)) },
1922− confirmButton = {
1923− TextButton(onClick = {
1924− showInitConfirm = false
1925− vm.initProject()
1926− }) { Text(stringResource(R.string.action_continue)) }
1927− },
1928− dismissButton = {
1929− TextButton(onClick = { showInitConfirm = false }) { Text(stringResource(R.string.cancel)) }
1930− },
1931− )
1932− }
1933−
1934− if (showRenameDialog) {
1935− RenameSessionChatDialog(
1936− initialTitle = sessionTitle ?: "",
1937− onDismiss = { showRenameDialog = false },
1938− onConfirm = { newName ->
1939− showRenameDialog = false
1940− vm.renameSession(newName)
1941− },
1942− )
1943− }
1944−
1945− if (showDeleteDialog) {
1946− AlertDialog(
1947− onDismissRequest = { showDeleteDialog = false },
1948− title = { Text(stringResource(R.string.delete_session_chat_title)) },
1949− text = { Text(stringResource(R.string.delete_session_chat_text, sessionTitle ?: sessionLabel)) },
1950− confirmButton = {
1951− TextButton(onClick = {
1952− showDeleteDialog = false
1953− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
1954− vm.deleteSession()
1955− }) { Text(stringResource(R.string.delete), color = MaterialTheme.colorScheme.error) }
1956− },
1957− dismissButton = {
1958− TextButton(onClick = { showDeleteDialog = false }) { Text(stringResource(R.string.cancel)) }
1959− },
1960− )
1961− }
1962−
1963− if (showShellDialog) {
1964− ShellCommandDialog(
1965− onDismiss = { showShellDialog = false },
1966− onRun = { cmd ->
1967− showShellDialog = false
1968− vm.runShell(cmd)
1969− },
1970− )
1971− }
1972−
1973− if (showModelPicker) {
1974− // Resolve persisted recent composite keys to the live ModelOption entries they refer
1975− // to, dropping any whose model is no longer offered by the server. Ordered by
1976− // recency (head of the store first).
1977− val recentOptions = remember(models, recentModelEntries) {
1978− val byKey = models.associateBy { it.providerID to it.modelID }
1979− recentModelEntries.mapNotNull { entry ->
1980− container.recentModelsStore.split(entry)?.let { (p, m) -> byKey[p to m] }
1981− }
1982− }
1983− // Resolve snackbar strings in the composable scope; the onSetPreferredModel lambda
1984− // below isn't @Composable, so stringResource can't be called inside it.
1985− val defaultModelClearedMsg = stringResource(R.string.default_model_cleared)
1986− val defaultModelSetFmt = stringResource(R.string.default_model_set, "%s")
1987− ModelPickerSheet(
1988− options = models,
1989− selected = selectedModel,
1990− loading = modelsLoading,
1991− error = modelsError,
1992− onSelect = {
1993− vm.selectModel(it)
1994− container.recentModelsStore.add(it.providerID, it.modelID)
1995− },
1996− onRetry = { vm.reloadModels() },
1997− onDismiss = { showModelPicker = false },
1998− preferredModelId = preferredModelId,
1999− onSetPreferredModel = { id ->
2000− scope.launch {
2001− runCatchingCancellable { container.settingsStore.setPreferredModelId(id) }
2002− // Confirm the change with a snackbar so the user sees it took effect —
2003− // the toggle's label flip can be missed, especially when clearing.
2004− val msg = if (id.isEmpty()) {
2005− defaultModelClearedMsg
2006− } else {
2007− val label = models.firstOrNull { it.modelID == id }?.modelLabel ?: id
2008− defaultModelSetFmt.format(label)
2009− }
2010− snackbar.showSnackbar(msg)
2011− }
2012− },
2013− recent = recentOptions,
2014− )
2015− }
2016−
2017− if (showAgentPicker) {
2018− AgentPickerSheet(
2019− agents = agents,
2020− selected = selectedAgent,
2021− loading = agentsLoading,
2022− error = agentsError,
2023− onSelect = { vm.selectAgent(it?.name) },
2024− onRetry = { vm.reloadAgents() },
2025− onDismiss = { showAgentPicker = false },
2026− )
2027− }
2028−
2029− if (showCommandPicker) {
2030− CommandPickerSheet(
2031− commands = commands,
2032− loading = commandsLoading,
2033− error = commandsError,
2034− onSelect = { vm.runCommand(it) },
2035− onRetry = { vm.reloadCommands() },
2036− onDismiss = { showCommandPicker = false },
2037− )
2038− }
2039−
2040− pendingPermission?.let { permission ->
2041− PermissionDialog(
2042− permission = permission,
2043− position = permissionProgress.position,
2044− total = permissionProgress.total,
2045− onRespond = { response -> vm.respondPermission(permission, response) },
2046− )
2047− }
2048−
2049− if (showPalette) {
2050− CommandPalette(actions = paletteActions, onDismiss = { showPalette = false })
2051− }
2052−
2053− if (showShortcutsDialog) {
2054− // Surfaces the hardware-keyboard shortcuts (Ctrl+K palette, Escape stop, Enter send)
2055− // that are otherwise wired but undiscoverable. A simple key/value list; Enter behavior
2056− // depends on the "Send on Enter" setting, noted inline.
2057− AlertDialog(
2058− onDismissRequest = { showShortcutsDialog = false },
2059− title = { Text(stringResource(R.string.keyboard_shortcuts_title)) },
2060− text = {
2061− Column(verticalArrangement = Arrangement.spacedBy(10.dp)) {
2062− ShortcutRow("Ctrl + K", stringResource(R.string.shortcut_open_palette))
2063− ShortcutRow("Esc", stringResource(R.string.shortcut_stop_run))
2064− ShortcutRow("Esc", stringResource(R.string.shortcut_close))
2065− ShortcutRow("Enter", stringResource(R.string.shortcut_send))
2066− ShortcutRow("Shift + Enter / Ctrl + Enter", stringResource(R.string.shortcut_newline))
2067− }
2068− },
2069− confirmButton = {
2070− TextButton(onClick = { showShortcutsDialog = false }) { Text(stringResource(R.string.action_continue)) }
2071− },
2072− )
2073− }
2074−}
2075−
2076−@Composable
2077−private fun ShortcutRow(keys: String, desc: String) {
2078− Row(verticalAlignment = Alignment.CenterVertically) {
2079− Text(
2080− keys,
2081− style = MaterialTheme.typography.labelLarge,
2082− fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
2083− modifier = Modifier.widthIn(min = 160.dp),
2084− )
2085− Text(
2086− desc,
2087− style = MaterialTheme.typography.bodyMedium,
2088− color = MaterialTheme.colorScheme.onSurfaceVariant,
2089− )
2090− }
2091−}
2092−
2093−/**
2094− * Slash-command autocomplete: when the draft starts with "/", show a filtered dropdown
2095− * of matching commands above the composer. Tapping a command fires it immediately.
2096− * Extracted from [ChatInputBar] to keep that function's cyclomatic complexity under
2097− * the detekt threshold. Suppressed while running or when the command catalog is empty.
2098− */
2099−@Composable
2100−private fun SlashCommandAutocomplete(
2101− value: String,
2102− commands: List<Command>,
2103− running: Boolean,
2104− onRunCommand: (Command) -> Unit,
2105−) {
2106− if (running || commands.isEmpty()) return
2107− val slashQuery = remember(value) {
2108− if (value.startsWith("/")) value.removePrefix("/") else null
2109− } ?: return
2110− val matchingCommands = remember(slashQuery, commands) {
2111− commands.filter { cmd ->
2112− slashQuery.isEmpty() ||
2113− cmd.name.contains(slashQuery, ignoreCase = true) ||
2114− (cmd.description?.contains(slashQuery, ignoreCase = true) == true)
2115− }.take(8)
2116− }
2117− if (matchingCommands.isNotEmpty()) {
2118− CommandAutocompleteDropdown(
2119− commands = matchingCommands,
2120− onPick = onRunCommand,
2121− )
2122− }
2123−}
2124−
2125−/**
2126− * Slash-command autocomplete dropdown shown above the composer when the draft starts
2127− * with "/". Renders up to 8 matching commands as a scrollable, elevated surface so the
2128− * user can discover and invoke commands by typing the conventional "/" prefix instead
2129− * of opening the overflow menu / command palette. Tapping a row fires the command.
2130− */
2131−@Composable
2132−private fun CommandAutocompleteDropdown(
2133− commands: List<Command>,
2134− onPick: (Command) -> Unit,
2135−) {
2136− val haptics = LocalHapticFeedback.current
2137− Surface(
2138− color = MaterialTheme.colorScheme.surface,
2139− tonalElevation = 3.dp,
2140− shape = MaterialTheme.shapes.medium,
2141− modifier = Modifier
2142− .fillMaxWidth()
2143− .padding(horizontal = 8.dp, vertical = 4.dp)
2144− .heightIn(max = 240.dp),
2145− ) {
2146− LazyColumn {
2147− items(
2148− count = commands.size,
2149− key = { commands[it].name },
2150− ) { i ->
2151− val cmd = commands[i]
2152− Row(
2153− modifier = Modifier
2154− .fillMaxWidth()
2155− .clickable(role = Role.Button) {
2156− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2157− onPick(cmd)
2158− }
2159− .padding(horizontal = 16.dp, vertical = 10.dp),
2160− verticalAlignment = Alignment.CenterVertically,
2161− horizontalArrangement = Arrangement.spacedBy(12.dp),
2162− ) {
2163− Text(
2164− "/${cmd.name}",
2165− style = MaterialTheme.typography.labelLarge,
2166− fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
2167− color = MaterialTheme.colorScheme.primary,
2168− )
2169− cmd.description?.takeIf { it.isNotBlank() }?.let { desc ->
2170− Text(
2171− desc,
2172− style = MaterialTheme.typography.bodySmall,
2173− color = MaterialTheme.colorScheme.onSurfaceVariant,
2174− maxLines = 1,
2175− overflow = TextOverflow.Ellipsis,
2176− )
2177− }
2178− }
2179− }
2180− }
2181− }
2182−}
2183−
2184−@OptIn(androidx.compose.foundation.ExperimentalFoundationApi::class)
2185−@Suppress("CyclomaticComplexMethod")
2186−@Composable
2187−private fun ChatInputBar(
2188− value: String,
2189− onValueChange: (String) -> Unit,
2190− running: Boolean,
2191− aborting: Boolean,
2192− enabled: Boolean,
2193− sendOnEnter: Boolean,
2194− onSend: () -> Unit,
2195− onAbort: () -> Unit,
2196− queuedFollowUp: String?,
2197− onQueueFollowUp: (String) -> Unit,
2198− onCancelQueue: () -> Unit,
2199− focusRequester: androidx.compose.ui.focus.FocusRequester,
2200− attachments: List<PendingAttachment>,
2201− staging: Boolean,
2202− stagingFileCount: Int,
2203− onRemoveAttachment: (String) -> Unit,
2204− onPickPhoto: () -> Unit,
2205− onPickFile: () -> Unit,
2206− onCamera: () -> Unit,
2207− onVoice: () -> Unit,
2208− onPasteImage: (List<Uri>) -> Unit,
2209− commands: List<Command> = emptyList(),
2210− onRunCommand: (Command) -> Unit = {},
2211−) {
2212− // Sendable when there's text OR at least one attachment (an image-only prompt is valid).
2213− val hasContent = value.isNotBlank() || attachments.isNotEmpty()
2214− val context = LocalContext.current
2215− // Full-screen editor state: opened when the user wants more space for a long prompt.
2216− var showFullScreenEditor by rememberSaveable { mutableStateOf(false) }
2217− Surface(tonalElevation = 3.dp, modifier = Modifier.imePadding()) {
2218− Column(modifier = Modifier.fillMaxWidth().windowInsetsPadding(WindowInsets.navigationBars)) {
2219− // A queued follow-up replaces the Stop button with a "queued" chip so the
2220− // user sees their message will be sent when the run finishes, and can cancel.
2221− if (queuedFollowUp != null) {
2222− val editLabel = stringResource(R.string.edit)
2223− Row(
2224− modifier = Modifier
2225− .fillMaxWidth()
2226− .padding(start = 12.dp, top = 6.dp, end = 4.dp),
2227− verticalAlignment = Alignment.CenterVertically,
2228− ) {
2229− // Tapping the chip reloads the queued text into the draft (and clears the
2230− // queue) so a typo spotted while queuing can be fixed without retyping.
2231− Column(
2232− modifier = Modifier
2233− .weight(1f)
2234− .clip(MaterialTheme.shapes.small)
2235− .clickable(role = Role.Button, onClickLabel = editLabel) {
2236− onValueChange(queuedFollowUp)
2237− onCancelQueue()
2238− }
2239− .padding(vertical = 4.dp),
2240− ) {
2241− Text(
2242− stringResource(R.string.queued),
2243− style = MaterialTheme.typography.labelSmall,
2244− color = MaterialTheme.colorScheme.onSurfaceVariant,
2245− )
2246− Text(
2247− queuedFollowUp,
2248− style = MaterialTheme.typography.bodySmall,
2249− color = MaterialTheme.colorScheme.onSurfaceVariant,
2250− maxLines = 1,
2251− overflow = TextOverflow.Ellipsis,
2252− )
2253− }
2254− TextButton(onClick = onCancelQueue, contentPadding = androidx.compose.foundation.layout.PaddingValues(horizontal = 8.dp)) {
2255− Text(stringResource(R.string.cancel))
2256− }
2257− }
2258− }
2259− // Staged attachments: horizontally-scrollable thumbnails/chips, each removable.
2260− AttachmentStrip(attachments, onRemove = onRemoveAttachment, staging = staging, stagingFileCount = stagingFileCount)
2261− // Slash-command autocomplete: extracted to a helper to keep this function's
2262− // complexity under the detekt threshold. Returns no-op when the draft doesn't
2263− // start with "/" or the command catalog is empty.
2264− SlashCommandAutocomplete(
2265− value = value,
2266− commands = commands,
2267− running = running,
2268− onRunCommand = onRunCommand,
2269− )
2270− Row(
2271− modifier = Modifier.fillMaxWidth().padding(8.dp),
2272− verticalAlignment = Alignment.Bottom,
2273− ) {
2274− // Attach menu: photo picker, camera, or any file.
2275− var showAttachMenu by remember { mutableStateOf(false) }
2276− Box {
2277− IconButton(onClick = { showAttachMenu = true }, enabled = enabled) {
2278− Icon(Icons.Filled.Add, contentDescription = stringResource(R.string.add_attachment))
2279− }
2280− DropdownMenu(expanded = showAttachMenu, onDismissRequest = { showAttachMenu = false }) {
2281− DropdownMenuItem(
2282− leadingIcon = { Icon(Icons.Filled.PhotoLibrary, contentDescription = null) },
2283− text = { Text(stringResource(R.string.attach_photo)) },
2284− onClick = { showAttachMenu = false; onPickPhoto() },
2285− )
2286− DropdownMenuItem(
2287− leadingIcon = { Icon(Icons.Filled.PhotoCamera, contentDescription = null) },
2288− text = { Text(stringResource(R.string.attach_camera)) },
2289− onClick = { showAttachMenu = false; onCamera() },
2290− )
2291− DropdownMenuItem(
2292− leadingIcon = { Icon(Icons.Filled.Description, contentDescription = null) },
2293− text = { Text(stringResource(R.string.attach_file)) },
2294− onClick = { showAttachMenu = false; onPickFile() },
2295− )
2296− }
2297− }
2298− // Voice dictation: appends recognized speech to the draft. Hidden (not just
2299− // disabled) when the device has no speech-recognition activity, so a user
2300− // without a voice app doesn't get a button that only fails noisily on tap.
2301− val voiceAvailable = remember {
2302− val pm = context.packageManager
2303− val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
2304− pm.queryIntentActivities(intent, 0).isNotEmpty()
2305− }
2306− if (voiceAvailable) {
2307− IconButton(onClick = onVoice, enabled = enabled) {
2308− Icon(Icons.Filled.Mic, contentDescription = stringResource(R.string.voice_input))
2309− }
2310− }
2311− // Expand to a full-screen editor for long prompts (the inline field caps at 6 lines).
2312− IconButton(onClick = { showFullScreenEditor = true }, enabled = enabled) {
2313− Icon(Icons.Filled.Expand, contentDescription = stringResource(R.string.expand_editor))
2314− }
2315− OutlinedTextField(
2316− value = value,
2317− onValueChange = { v ->
2318− // Cap input length so a huge paste can't stall the UI. Shares are
2319− // capped separately in MainActivity; this guards typed/pasted drafts.
2320− onValueChange(v.take(NetworkConfig.maxDraftLengthChars))
2321− },
2322− modifier = Modifier
2323− .weight(1f)
2324− .focusRequester(focusRequester)
2325− .testTag("chat_input")
2326− // Intercept image content pasted/dropped into the field (keyboard paste
2327− // of a copied screenshot, drag from Files, etc.) and route it through the
2328− // same staging path as the attach menu. Non-image content (text) falls
2329− // through unchanged so normal typing/paste works.
2330− .contentReceiver(
2331− remember {
2332− androidx.compose.foundation.content.ReceiveContentListener { transferable ->
2333− val clipData = transferable.clipEntry?.clipData
2334− if (clipData != null) {
2335− val imageUris = (0 until clipData.itemCount).mapNotNull { i ->
2336− val item = clipData.getItemAt(i)
2337− item.uri?.takeIf { uri ->
2338− item.text == null && uri.toString().let { s ->
2339− s.startsWith("content:") || s.startsWith("file:")
2340− }
2341− }
2342− }
2343− if (imageUris.isNotEmpty()) {
2344− onPasteImage(imageUris)
2345− }
2346− }
2347− transferable
2348− }
2349− },
2350− )
2351− .onPreviewKeyEvent { event ->
2352− if (event.type != KeyEventType.KeyDown || event.key != Key.Enter) return@onPreviewKeyEvent false
2353− // With "Send on Enter" on, Enter sends (Shift+Enter newlines).
2354− // With it off, Enter inserts a newline and Ctrl+Enter sends.
2355− val send = enterShouldSend(
2356− enabled = enabled,
2357− hasContent = hasContent,
2358− sendOnEnter = sendOnEnter,
2359− shift = event.isShiftPressed,
2360− ctrl = event.isCtrlPressed,
2361− )
2362− if (send) {
2363− if (running) onQueueFollowUp(value) else onSend()
2364− true
2365− } else {
2366− false
2367− }
2368− },
2369− // While a run is active a typed message only queues (sends after the run), so
2370− // the placeholder says so instead of the plain "Message…".
2371− placeholder = {
2372− Text(stringResource(if (running) R.string.composer_hint_running else R.string.message_placeholder))
2373− },
2374− enabled = enabled,
2375− maxLines = 6,
2376− // Show a "N / max" countdown once the draft crosses a high fraction of
2377− // the cap, so the user knows a paste is about to be truncated instead
2378− // of being silently cut off. Hidden for normal short prompts to avoid
2379− // clutter under a typical one-line message.
2380− supportingText = {
2381− val threshold = (NetworkConfig.maxDraftLengthChars * NetworkConfig.draftCountdownThresholdFraction).toInt()
2382− if (value.length >= threshold) {
2383− Text(
2384− stringResource(
2385− R.string.draft_chars_remaining,
2386− NetworkConfig.maxDraftLengthChars - value.length,
2387− NetworkConfig.maxDraftLengthChars,
2388− ),
2389− style = MaterialTheme.typography.labelSmall,
2390− color = if (value.length >= NetworkConfig.maxDraftLengthChars) MaterialTheme.colorScheme.error
2391− else MaterialTheme.colorScheme.onSurfaceVariant,
2392− )
2393− } else if (value.lines().size > 6) {
2394− // The inline field caps at 6 lines; once the draft crosses that,
2395− // hint that a bigger full-screen editor exists (the Expand icon
2396− // above is easy to miss among the icon row). A tappable label
2397− // would be ideal, but a plain hint is enough to draw attention.
2398− Text(
2399− stringResource(R.string.open_full_editor_hint),
2400− style = MaterialTheme.typography.labelSmall,
2401− color = MaterialTheme.colorScheme.onSurfaceVariant,
2402− )
2403− }
2404− },
2405− keyboardOptions = KeyboardOptions(
2406− // When "Send on Enter" is on, expose ImeAction.Send so the soft
2407− // keyboard shows a send key — matching the setting's intent and
2408− // giving touch-only users a keyboard send affordance. When off,
2409− // ImeAction.Default keeps the enter/newline key for multi-line input.
2410− imeAction = if (sendOnEnter) ImeAction.Send else ImeAction.Default,
2411− capitalization = KeyboardCapitalization.Sentences,
2412− ),
2413− keyboardActions = KeyboardActions(
2414− onSend = {
2415− if (enabled && hasContent) onSend()
2416− },
2417− ),
2418− )
2419− ComposerTrailingButton(
2420− running = running,
2421− aborting = aborting,
2422− canSend = enabled && hasContent,
2423− canQueue = enabled && value.isNotBlank(),
2424− onSend = onSend,
2425− onAbort = onAbort,
2426− onQueue = { onQueueFollowUp(value) },
2427− )
2428− }
2429− }
2430− if (showFullScreenEditor) {
2431− FullScreenEditor(
2432− value = value,
2433− onValueChange = onValueChange,
2434− onDismiss = { showFullScreenEditor = false },
2435− onSend = {
2436− showFullScreenEditor = false
2437− // Mirror the inline composer's behavior: while a run is active a send
2438− // can't go immediately, so queue the follow-up instead of silently
2439− // dropping it (vm.send() returns false during a run, which previously
2440− // lost the typed message with no feedback).
2441− if (running) onQueueFollowUp(value) else onSend()
2442− },
2443− canSend = enabled && hasContent,
2444− running = running,
2445− sendOnEnter = sendOnEnter,
2446− attachments = attachments,
2447− onRemoveAttachment = onRemoveAttachment,
2448− staging = staging,
2449− stagingFileCount = stagingFileCount,
2450− )
2451− }
2452− }
2453−}
2454−
2455−/** Full-screen editor dialog for composing long prompts. Gives the full viewport height to
2456− * the text field (vs the inline 6-line cap) with a Send button and a collapse action. */
2457−@OptIn(ExperimentalMaterial3Api::class)
2458−@Composable
2459−private fun FullScreenEditor(
2460− value: String,
2461− onValueChange: (String) -> Unit,
2462− onDismiss: () -> Unit,
2463− onSend: () -> Unit,
2464− canSend: Boolean,
2465− running: Boolean = false,
2466− sendOnEnter: Boolean = false,
2467− attachments: List<PendingAttachment> = emptyList(),
2468− onRemoveAttachment: (String) -> Unit = {},
2469− staging: Boolean = false,
2470− stagingFileCount: Int = 0,
2471−) {
2472− androidx.compose.ui.window.Dialog(
2473− onDismissRequest = onDismiss,
2474− properties = androidx.compose.ui.window.DialogProperties(usePlatformDefaultWidth = false, decorFitsSystemWindows = false),
2475− ) {
2476− // Cap the editor width on large screens (tablets) so the text field doesn't stretch
2477− // edge-to-edge — matching the chat list's readability rationale. BoxWithConstraints
2478− // gives the available width so we can center a capped-width column.
2479− androidx.compose.foundation.layout.BoxWithConstraints(
2480− modifier = Modifier.fillMaxSize(),
2481− contentAlignment = Alignment.Center,
2482− ) {
2483− val hPad = if (maxWidth > NetworkConfig.twoPaneWidthThresholdDp.dp)
2484− ((maxWidth - NetworkConfig.composerDialogMaxWidthDp.dp) / 2).coerceAtLeast(0.dp)
2485− else 0.dp
2486− Scaffold(
2487− modifier = Modifier.padding(horizontal = hPad),
2488− topBar = {
2489− androidx.compose.material3.TopAppBar(
2490− title = { Text(stringResource(R.string.compose_editor_title)) },
2491− navigationIcon = {
2492− androidx.compose.material3.TextButton(onClick = onDismiss) {
2493− Text(stringResource(R.string.collapse_editor))
2494− }
2495− },
2496− )
2497− },
2498− bottomBar = {
2499− Surface(tonalElevation = 3.dp) {
2500− Row(
2501− modifier = Modifier.fillMaxWidth().imePadding().padding(12.dp),
2502− horizontalArrangement = Arrangement.End,
2503− ) {
2504− androidx.compose.material3.Button(onClick = onSend, enabled = canSend) {
2505− Text(stringResource(if (running) R.string.queue else R.string.send))
2506− }
2507− }
2508− }
2509− },
2510− ) { padding ->
2511− Column(modifier = Modifier.fillMaxSize().padding(padding)) {
2512− // Show staged attachments in the full-screen editor too, so a user who staged
2513− // images then expanded for a long prompt can still see and remove them without
2514− // collapsing first (mirrors the inline composer's AttachmentStrip).
2515− AttachmentStrip(attachments, onRemove = onRemoveAttachment, staging = staging, stagingFileCount = stagingFileCount)
2516− OutlinedTextField(
2517− value = value,
2518− onValueChange = { v -> onValueChange(v.take(NetworkConfig.maxDraftLengthChars)) },
2519− modifier = Modifier
2520− .fillMaxSize()
2521− .weight(1f)
2522− // Honor the "Send on Enter" setting here too, so the full-screen
2523− // editor matches the inline composer: Enter sends (Shift+Enter
2524− // newlines) when on; Enter inserts a newline and Ctrl+Enter sends
2525− // when off. Previously this hard-coded ImeAction.Default and had no
2526− // key handler, so a hardware-keyboard user got a different behaviour
2527− // from the inline composer depending on which they happened to open.
2528− .onPreviewKeyEvent { event ->
2529− if (event.type != KeyEventType.KeyDown || event.key != Key.Enter) return@onPreviewKeyEvent false
2530− val send = enterShouldSend(
2531− enabled = canSend,
2532− hasContent = canSend,
2533− sendOnEnter = sendOnEnter,
2534− shift = event.isShiftPressed,
2535− ctrl = event.isCtrlPressed,
2536− )
2537− if (send) { onSend(); true } else false
2538− },
2539− placeholder = { Text(stringResource(R.string.message_placeholder)) },
2540− maxLines = Int.MAX_VALUE,
2541− keyboardOptions = KeyboardOptions(
2542− imeAction = if (sendOnEnter) ImeAction.Send else ImeAction.Default,
2543− capitalization = KeyboardCapitalization.Sentences,
2544− ),
2545− keyboardActions = KeyboardActions(
2546− onSend = { if (canSend) onSend() },
2547− ),
2548− )
2549− }
2550− }
2551− }
2552− }
2553−}
2554−
2555−/** Whether a hardware Enter keypress should send: never when disabled/empty; otherwise
2556− * Enter sends (unless Shift) when send-on-Enter is on, else only Ctrl+Enter sends. */
2557−private fun enterShouldSend(
2558− enabled: Boolean,
2559− hasContent: Boolean,
2560− sendOnEnter: Boolean,
2561− shift: Boolean,
2562− ctrl: Boolean,
2563−): Boolean = when {
2564− !enabled || !hasContent -> false
2565− sendOnEnter -> !shift
2566− else -> ctrl
2567−}
2568−
2569−/** The composer's trailing button: while a run is active a Stop (with in-flight spinner),
2570− * preceded by a Queue button when the user has typed a follow-up; otherwise Send. Extracted so
2571− * [ChatInputBar] stays under the complexity threshold. */
2572−@Composable
2573−private fun ComposerTrailingButton(
2574− running: Boolean,
2575− aborting: Boolean,
2576− canSend: Boolean,
2577− canQueue: Boolean,
2578− onSend: () -> Unit,
2579− onAbort: () -> Unit,
2580− onQueue: () -> Unit,
2581−) {
2582− if (running) {
2583− Row(verticalAlignment = Alignment.CenterVertically) {
2584− // While a run is active the trailing action is Stop, so the only send affordance is
2585− // the keyboard's IME action — which is a plain newline when "Send on Enter" is off.
2586− // That leaves a touch-only user with the setting off no way to queue a follow-up
2587− // (Ctrl+Enter needs a hardware keyboard). Surface an explicit Queue button whenever
2588− // there's typed TEXT so queuing is always reachable, without changing the user's
2589− // Enter-inserts-a-newline preference. Gate on typed text — not the send-oriented
2590− // canSend, which is also true for an attachment-only composer — because queuing "" just
2591− // calls setQueuedFollowUp(null), silently cancelling any already-queued follow-up and
2592− // dropping the staged attachment (queued follow-ups don't carry attachments anyway).
2593− if (canQueue) {
2594− IconButton(
2595− onClick = onQueue,
2596− modifier = Modifier.testTag("queue_button"),
2597− ) {
2598− // PlaylistAdd reads as "add to a queue/list" more clearly than a clock
2599− // icon (which can be read as "snooze" or "later"), and isn't confused with
2600− // the Send action sitting right beside the Stop button.
2601− Icon(
2602− Icons.AutoMirrored.Filled.PlaylistAdd,
2603− contentDescription = stringResource(R.string.queue_followup),
2604− )
2605− }
2606− }
2607− // Show a spinner while the abort REST call is in flight so the user sees the stop
2608− // was sent, and disable to prevent a double-tap.
2609− IconButton(
2610− onClick = onAbort,
2611− enabled = !aborting,
2612− modifier = Modifier.padding(start = 4.dp).testTag("stop_button"),
2613− ) {
2614− if (aborting) {
2615− val stopLabel = stringResource(R.string.stop)
2616− CircularProgressIndicator(
2617− Modifier.size(18.dp).semantics { contentDescription = stopLabel },
2618− strokeWidth = 2.dp,
2619− )
2620− } else {
2621− Icon(Icons.Filled.Stop, contentDescription = stringResource(R.string.stop))
2622− }
2623− }
2624− }
2625− } else {
2626− IconButton(
2627− onClick = onSend,
2628− enabled = canSend,
2629− modifier = Modifier.padding(start = 4.dp).testTag("send_button"),
2630− ) {
2631− // Tint the send icon with primary when there's content to send so the commit action
2632− // draws the eye; muted otherwise. A plain enabled/disabled flip is easy to miss.
2633− Icon(
2634− Icons.AutoMirrored.Filled.Send,
2635− contentDescription = stringResource(R.string.send),
2636− tint = if (canSend) MaterialTheme.colorScheme.primary
2637− else MaterialTheme.colorScheme.onSurfaceVariant,
2638− )
2639− }
2640− }
2641−}
2642−
2643−@OptIn(androidx.compose.foundation.layout.ExperimentalLayoutApi::class)
2644−@Composable
2645−private fun EmptyConversation(
2646− onSuggestion: (String) -> Unit,
2647− modifier: Modifier = Modifier,
2648−) {
2649− // A few example prompts so a first-time user has a one-tap path to their first
2650− // message instead of staring at a blank input. Tapping a chip fills the draft
2651− // (without sending) so the user can edit it before sending.
2652− val suggestions = remember {
2653− listOf(
2654− R.string.empty_chat_suggest_1,
2655− R.string.empty_chat_suggest_2,
2656− R.string.empty_chat_suggest_3,
2657− )
2658− }
2659− Column(
2660− modifier = modifier.padding(32.dp),
2661− horizontalAlignment = Alignment.CenterHorizontally,
2662− ) {
2663− Icon(
2664− Icons.Filled.AutoAwesome,
2665− contentDescription = null,
2666− modifier = Modifier.size(48.dp),
2667− tint = MaterialTheme.colorScheme.onSurfaceVariant,
2668− )
2669− Spacer(Modifier.size(16.dp))
2670− Text(
2671− stringResource(R.string.empty_chat_title),
2672− style = MaterialTheme.typography.titleMedium,
2673− )
2674− Spacer(Modifier.size(8.dp))
2675− Text(
2676− stringResource(R.string.empty_chat_hint),
2677− style = MaterialTheme.typography.bodyMedium,
2678− color = MaterialTheme.colorScheme.onSurfaceVariant,
2679− )
2680− Spacer(Modifier.size(20.dp))
2681− // Suggestion chips wrap across rows on narrow screens instead of stacking full-width,
2682− // so a longer localized prompt doesn't push the chips off-screen on a phone.
2683− FlowRow(
2684− modifier = Modifier.fillMaxWidth(),
2685− horizontalArrangement = Arrangement.spacedBy(8.dp),
2686− verticalArrangement = Arrangement.spacedBy(8.dp),
2687− ) {
2688− suggestions.forEach { resId ->
2689− val text = stringResource(resId)
2690− androidx.compose.material3.AssistChip(
2691− onClick = { onSuggestion(text) },
2692− label = { Text(text, style = MaterialTheme.typography.bodyMedium) },
2693− )
2694− }
2695− }
2696− }
2697−}
2698−
2699−/** A banner shown while a revert checkpoint is active, offering an Undo (unrevert). When the
2700− * server included a diff of the revert, a collapsible "Show what changed" affordance reveals
2701− * it inline via [DiffView] so the user can see what was rolled back before deciding to undo. */
2702−@Composable
2703−private fun RevertBanner(diff: String?, isEditing: Boolean, onUndo: () -> Unit) {
2704− val haptics = LocalHapticFeedback.current
2705− var showDiff by rememberSaveable { mutableStateOf(false) }
2706− val expandMotion = rememberVisibilityTransitions()
2707− Surface(
2708− color = MaterialTheme.colorScheme.tertiaryContainer,
2709− tonalElevation = 2.dp,
2710− modifier = Modifier.fillMaxWidth(),
2711− ) {
2712− Column {
2713− Row(
2714− modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
2715− verticalAlignment = Alignment.CenterVertically,
2716− horizontalArrangement = Arrangement.SpaceBetween,
2717− ) {
2718− Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
2719− Icon(
2720− if (isEditing) Icons.Filled.Edit else Icons.Filled.Restore,
2721− contentDescription = null,
2722− tint = MaterialTheme.colorScheme.onTertiaryContainer,
2723− modifier = Modifier.size(18.dp),
2724− )
2725− Text(
2726− stringResource(if (isEditing) R.string.editing_banner else R.string.reverted_banner),
2727− style = MaterialTheme.typography.bodySmall,
2728− color = MaterialTheme.colorScheme.onTertiaryContainer,
2729− modifier = Modifier.padding(start = 8.dp),
2730− )
2731− // "Show what changed" toggle, shown only when the server provided a diff.
2732− // Collapsible so the banner stays compact by default; a user curious about
2733− // what the revert rolled back can expand it inline without leaving the chat.
2734− if (!diff.isNullOrBlank()) {
2735− TextButton(
2736− onClick = {
2737− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2738− showDiff = !showDiff
2739− },
2740− contentPadding = androidx.compose.foundation.layout.PaddingValues(start = 8.dp, end = 4.dp),
2741− ) {
2742− Icon(
2743− if (showDiff) Icons.Filled.ExpandLess else Icons.Filled.ExpandMore,
2744− contentDescription = null,
2745− modifier = Modifier.size(16.dp),
2746− )
2747− Text(
2748− stringResource(if (showDiff) R.string.revert_hide_diff else R.string.revert_show_diff),
2749− style = MaterialTheme.typography.labelSmall,
2750− modifier = Modifier.padding(start = 4.dp),
2751− )
2752− }
2753− }
2754− }
2755− TextButton(onClick = {
2756− // Haptic on undo to match the other destructive/important confirmations: a
2757− // revert restores potentially hundreds of hidden messages.
2758− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2759− onUndo()
2760− }) { Text(stringResource(R.string.undo)) }
2761− }
2762− // The diff render lives inside the banner's Surface so it inherits the tertiary
2763− // tonal container and reads as part of the banner, not a floating panel.
2764− if (!diff.isNullOrBlank()) {
2765− AnimatedVisibility(
2766− visible = showDiff,
2767− enter = expandMotion.enter,
2768− exit = expandMotion.exit,
2769− ) {
2770− Column(modifier = Modifier.padding(start = 12.dp, end = 12.dp, bottom = 8.dp)) {
2771− Text(
2772− stringResource(R.string.revert_diff_header),
2773− style = MaterialTheme.typography.labelSmall,
2774− color = MaterialTheme.colorScheme.onTertiaryContainer,
2775− modifier = Modifier.padding(bottom = 4.dp),
2776− )
2777− DiffView(diff, saveKey = "revertDiff")
2778− }
2779− }
2780− }
2781− }
2782− }
2783−}
2784−
2785−/** A dismissible preview card shown above the composer when the user quote-replied to a
2786− * message. Displays the quoted text (truncated) with a Cancel affordance so the user can
2787− * abort the quote without digging into the draft to strip the `>`-prefixed lines. Mirrors
2788− * the Discord/Slack quote-preview pattern. */
2789−@Composable
2790−private fun QuoteReplyBanner(quotedText: String, onCancel: () -> Unit) {
2791− val haptics = LocalHapticFeedback.current
2792− Surface(
2793− color = MaterialTheme.colorScheme.secondaryContainer,
2794− tonalElevation = 2.dp,
2795− modifier = Modifier.fillMaxWidth(),
2796− ) {
2797− Row(
2798− modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 6.dp, bottom = 6.dp),
2799− verticalAlignment = Alignment.Top,
2800− ) {
2801− Icon(
2802− Icons.Filled.FormatQuote,
2803− contentDescription = null,
2804− tint = MaterialTheme.colorScheme.onSecondaryContainer,
2805− modifier = Modifier.size(18.dp).padding(top = 2.dp),
2806− )
2807− Column(modifier = Modifier.weight(1f).padding(start = 8.dp)) {
2808− Text(
2809− stringResource(R.string.quote_reply_banner),
2810− style = MaterialTheme.typography.labelSmall,
2811− color = MaterialTheme.colorScheme.onSecondaryContainer,
2812− )
2813− Text(
2814− quotedText,
2815− style = MaterialTheme.typography.bodySmall,
2816− color = MaterialTheme.colorScheme.onSecondaryContainer,
2817− maxLines = 2,
2818− overflow = TextOverflow.Ellipsis,
2819− )
2820− }
2821− IconButton(onClick = {
2822− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.TextHandleMove)
2823− onCancel()
2824− }) {
2825− Icon(
2826− Icons.Filled.Close,
2827− contentDescription = stringResource(R.string.cancel_quote_reply),
2828− tint = MaterialTheme.colorScheme.onSecondaryContainer,
2829− modifier = Modifier.size(18.dp),
2830− )
2831− }
2832− }
2833− }
2834−}
2835−
2836−/** A banner shown while messages composed offline are queued in the outbox, with a
2837− * "Send now" nudge and a discard. Shows a spinner while the queue is flushing. */
2838−@Composable
2839−private fun OutboxBanner(
2840− count: Int,
2841− sending: Boolean,
2842− onFlush: () -> Unit,
2843− onDiscard: () -> Unit,
2844−) {
2845− var showDiscardConfirm by rememberSaveable { mutableStateOf(false) }
2846− Surface(
2847− color = MaterialTheme.colorScheme.secondaryContainer,
2848− tonalElevation = 2.dp,
2849− modifier = Modifier.fillMaxWidth(),
2850− ) {
2851− Row(
2852− modifier = Modifier.fillMaxWidth().padding(start = 12.dp, end = 4.dp, top = 4.dp, bottom = 4.dp),
2853− verticalAlignment = Alignment.CenterVertically,
2854− horizontalArrangement = Arrangement.SpaceBetween,
2855− ) {
2856− Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.weight(1f)) {
2857− if (sending) {
2858− CircularProgressIndicator(
2859− Modifier.size(16.dp),
2860− strokeWidth = 2.dp,
2861− color = MaterialTheme.colorScheme.onSecondaryContainer,
2862− )
2863− Spacer(Modifier.size(8.dp))
2864− }
2865− Text(
2866− if (sending) {
2867− stringResource(R.string.outbox_sending)
2868− } else {
2869− val res = if (count == 1) R.string.outbox_pending_one else R.string.outbox_pending_many
2870− stringResource(res, count)
2871− },
2872− style = MaterialTheme.typography.bodySmall,
2873− color = MaterialTheme.colorScheme.onSecondaryContainer,
2874− )
2875− }
2876− if (!sending) {
2877− val haptics = LocalHapticFeedback.current
2878− TextButton(onClick = onFlush) { Text(stringResource(R.string.outbox_flush)) }
2879− TextButton(onClick = {
2880− // Confirm before discarding all queued messages (irreversible), matching
2881− // the confirmation pattern used by deleteSession and other destructive
2882− // actions. Previously a single tap dropped every queued message.
2883− haptics.performHapticFeedback(androidx.compose.ui.hapticfeedback.HapticFeedbackType.LongPress)
2884− showDiscardConfirm = true
2885− }) {
2886− Text(stringResource(R.string.outbox_discard_all), color = MaterialTheme.colorScheme.error)
2887− }
2888− }
2889− }
2890− }
2891− if (showDiscardConfirm) {
2892− androidx.compose.material3.AlertDialog(
2893− onDismissRequest = { showDiscardConfirm = false },
2894− title = { Text(stringResource(R.string.discard_queued_title)) },
2895− text = { Text(stringResource(R.string.discard_queued_text, count)) },
2896− confirmButton = {
2897− androidx.compose.material3.TextButton(onClick = {
2898− showDiscardConfirm = false
2899− onDiscard()
2900− }) { Text(stringResource(R.string.discard)) }
2901− },
2902− dismissButton = {
2903− androidx.compose.material3.TextButton(onClick = { showDiscardConfirm = false }) {
2904− Text(stringResource(R.string.cancel))
2905− }
2906− },
2907− )
2908− }
2909−}
2910−
2911−/** Prompt for a one-off shell command to run in the session's worktree. */
2912−@Composable
2913−private fun ShellCommandDialog(onDismiss: () -> Unit, onRun: (String) -> Unit) {
2914− var command by rememberSaveable { mutableStateOf("") }
2915− AlertDialog(
2916− onDismissRequest = onDismiss,
2917− title = { Text(stringResource(R.string.run_shell_command)) },
2918− text = {
2919− OutlinedTextField(
2920− value = command,
2921− onValueChange = { command = it },
2922− modifier = Modifier.fillMaxWidth(),
2923− placeholder = { Text(stringResource(R.string.shell_command_hint)) },
2924− label = { Text(stringResource(R.string.shell_command_label)) },
2925− singleLine = true,
2926− keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
2927− keyboardActions = KeyboardActions(onDone = { if (command.isNotBlank()) onRun(command.trim()) }),
2928− )
2929− },
2930− confirmButton = {
2931− TextButton(
2932− onClick = { if (command.isNotBlank()) onRun(command.trim()) },
2933− enabled = command.isNotBlank(),
2934− ) { Text(stringResource(R.string.run)) }
2935− },
2936− dismissButton = { TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) } },
2937− )
2938−}
2939−
2940−/**
2941− * Change signal for the auto-scroll-on-stream watcher. Primitive fields avoid the
2942− * boxing `Triple<Int, Int, Boolean>` would impose on every snapshot evaluation, and
2943− * equality is structural so `snapshotFlow` emits only when something relevant changes.
2944− */
2945−private data class AutoScrollSignal(val size: Int, val lastTextLength: Int, val pinned: Boolean)
2946−
2947−/** Length of the streaming content carried by [part], driving auto-scroll as it grows.
2948− * Covers text, reasoning, and tool output so a pinned view keeps following non-text
2949− * streaming, not just plain assistant text. O(1). */
2950−private fun streamingContentLength(part: Part?): Int = when (part) {
2951− is TextPart -> part.text.length
2952− is ReasoningPart -> part.text.length
2953− is ToolPart -> when (val st = part.state) {
2954− is ToolCompleted -> st.output?.length ?: 0
2955− is ToolError -> st.error?.length ?: 0
2956− is ToolRunning -> st.title?.length ?: 0
2957− else -> 0
2958− }
2959− else -> 0
2960−}
2961−
2962−/** Rename dialog for the currently-open session. Mirrors the SessionListScreen rename
2963− * dialog but lives in the chat screen so the user can rename without backing out to
2964− * the list. Pre-filled with the current title; the cap matches the list dialog. */
2965−@Composable
2966−private fun RenameSessionChatDialog(
2967− initialTitle: String,
2968− onDismiss: () -> Unit,
2969− onConfirm: (String) -> Unit,
2970−) {
2971− // Seed the field once (no key input) so a later external title change — e.g. opencode
2972− // auto-generating a session title after the first prompt, arriving via SessionUpdated —
2973− // doesn't re-initialize the box and discard the user's in-progress edit.
2974− var title by rememberSaveable { mutableStateOf(initialTitle) }
2975− AlertDialog(
2976− onDismissRequest = onDismiss,
2977− title = { Text(stringResource(R.string.rename_session_chat)) },
2978− text = {
2979− OutlinedTextField(
2980− value = title,
2981− onValueChange = { v -> title = v.take(NetworkConfig.maxSessionTitleChars) },
2982− modifier = Modifier.fillMaxWidth(),
2983− placeholder = { Text(stringResource(R.string.session_title_hint)) },
2984− label = { Text(stringResource(R.string.rename_session_chat)) },
2985− singleLine = true,
2986− keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
2987− keyboardActions = KeyboardActions(onDone = { if (title.isNotBlank()) onConfirm(title.trim()) }),
2988− )
2989− },
2990− confirmButton = {
2991− TextButton(onClick = { if (title.isNotBlank()) onConfirm(title.trim()) }, enabled = title.isNotBlank()) {
2992− Text(stringResource(R.string.save))
2993− }
2994− },
2995− dismissButton = {
2996− TextButton(onClick = onDismiss) { Text(stringResource(R.string.cancel)) }
2997− },
2998− )
2999−}
3000−
3001−/**
3002− * A single item in the chat message list — either a [Message] bubble or a day
3003− * [Separator] inserted before the first message of a new day. The separator shifts
3004− * the LazyColumn indices vs. the raw messages list, so scroll-target math must use
3005− * the [List] of these items (not `messages.size`/`lastIndex`).
3006− */
3007−private sealed interface MessageListItem {
3008− val key: Any
3009− val contentType: Any
3010−
3011− data class Message(
3012− val message: MessageWithParts,
3013− override val key: Any,
3014− // Whether this is the first message in a consecutive run of the same speaker (role).
3015− // Used to suppress the assistant avatar/header on follow-up messages in the same run,
3016− // reducing visual noise in tool-heavy conversations where many assistant messages
3017− // appear back-to-back. A separator or a role change resets the flag.
3018− val isFirstOfSpeaker: Boolean,
3019− ) : MessageListItem {
3020− override val contentType: Any get() = message.info::class
3021− }
3022−
3023− data class Separator(val label: String, val ordinal: Int) : MessageListItem {
3024− // Key on the day-occurrence ordinal, not the label: two non-contiguous groups
3025− // can share a label (e.g. an untimestamped message — empty label — between two
3026− // same-day messages, or two untimestamped groups), and a label-only key would
3027− // then collide, which makes LazyColumn throw on duplicate keys. The ordinal is
3028− // stable for a given message ordering so slots aren't needlessly recreated.
3029− override val key: Any get() = "sep_${ordinal}_$label"
3030− // Separators share a contentType so the LazyColumn can recycle their slots.
3031− override val contentType: Any get() = "separator"
3032− }
3033−}
3034−
3035−/**
3036− * Build the interleaved list of [MessageListItem]s for the message list, inserting a
3037− * [MessageListItem.Separator] before the first message of each new calendar day. Uses
3038− * the message's `time.created` (falling back to `updated` then `completed`) to bucket.
3039− * Messages with no timestamp are grouped under an empty-label separator only if they
3040− * start the list, so a server that omits timestamps doesn't suppress the first divider.
3041− *
3042− * [todayLabel]/[yesterdayLabel] are resolved by the caller (a @Composable can't call
3043− * stringResource from inside this plain function) and used for the "Today"/"Yesterday"
3044− * labels; older days fall back to a locale-stable medium-date format.
3045− */
3046−private fun buildMessageListItems(
3047− messages: List<MessageWithParts>,
3048− todayLabel: String,
3049− yesterdayLabel: String,
3050−): List<MessageListItem> {
3051− if (messages.isEmpty()) return emptyList()
3052− val today = java.time.LocalDate.now(java.time.ZoneId.systemDefault())
3053− val dateFmt = mediumDateFormat()
3054− val result = ArrayList<MessageListItem>(messages.size + 4)
3055− val seenKeys = HashSet<String>(messages.size * 2)
3056− var lastDayKey: String? = null
3057− var sepOrdinal = 0
3058− var emptyIdOrdinal = 0
3059− var first = true
3060− // Track the previous message's role to detect consecutive same-speaker runs, so the
3061− // avatar/header can be suppressed on follow-up messages in the same run. A null means
3062− // "no previous message or a separator just interrupted the run", both of which make the
3063− // next message the first of its group.
3064− var prevRoleClass: kotlin.reflect.KClass<out soy.iko.opencode.data.model.MessageInfo>? = null
3065− for (message in messages) {
3066− val ts = message.info.time?.created ?: message.info.time?.updated ?: message.info.time?.completed
3067− val dayKey = ts?.let { dayKey(it) } ?: ""
3068− // Emit a separator before the very first message (so a leading un-timestamped message
3069− // still gets the first divider, empty label and all), and thereafter only when crossing
3070− // into a new NON-empty calendar day. An un-timestamped message mid-list (empty key)
3071− // neither emits its own separator nor resets the day — otherwise a following same-day
3072− // message would see a "" -> "<today>" transition and emit a duplicate "Today" header.
3073− if (first || (dayKey.isNotEmpty() && dayKey != lastDayKey)) {
3074− result.add(MessageListItem.Separator(dayLabel(dayKey, ts ?: 0L, today, todayLabel, yesterdayLabel, dateFmt), sepOrdinal++))
3075− // A date separator visually breaks a speaker run, so the next message is treated
3076− // as the first of its group (even if the same role continues across the day break).
3077− prevRoleClass = null
3078− }
3079− if (dayKey.isNotEmpty()) lastDayKey = dayKey
3080− first = false
3081− // Most messages have a unique non-empty id. An unrecognized-role message can carry an
3082− // empty id — and the reducer intentionally keeps several such messages as distinct
3083− // holders — so give each a stable synthetic key and defensively de-collide any remaining
3084− // duplicate; otherwise LazyColumn throws on a duplicate key and the whole screen crashes.
3085− var key = message.info.id.ifEmpty { "msg-empty-${emptyIdOrdinal++}" }
3086− if (!seenKeys.add(key)) {
3087− var suffix = 1
3088− while (!seenKeys.add("$key#$suffix")) suffix++
3089− key = "$key#$suffix"
3090− }
3091− val roleClass = message.info::class
3092− val isFirstOfSpeaker = prevRoleClass == null || roleClass != prevRoleClass
3093− result.add(MessageListItem.Message(message, key, isFirstOfSpeaker))
3094− prevRoleClass = roleClass
3095− }
3096− return result
3097−}
3098−
3099−/**
3100− * A stable bucket key for a timestamp's calendar day (epoch-days as a string).
3101− *
3102− * [buildMessageListItems] re-runs on every streaming snapshot (the memo is keyed on the
3103− * whole `messages` list, which must stay so the live message's fresh parts render), so a
3104− * naive implementation would re-allocate an `Instant`/`ZonedDateTime`/`LocalDate` for
3105− * every message on every token. Message timestamps are immutable once assigned, so we
3106− * memoize the parse per epoch-millis: after the first snapshot, each unchanged message is
3107− * a cheap hash lookup. Bounded LRU (access-order) caps memory; only touched on the main
3108− * thread during composition, so the coarse lock is uncontended.
3109− */
3110−private val dayKeyCache = object : LinkedHashMap<Long, String>(128, 0.75f, true) {
3111− override fun removeEldestEntry(eldest: MutableMap.MutableEntry<Long, String>): Boolean = size > 1024
3112−}
3113−
3114−private fun dayKey(epochMillis: Long): String = synchronized(dayKeyCache) {
3115− dayKeyCache.getOrPut(epochMillis) {
3116− java.time.Instant.ofEpochMilli(epochMillis)
3117− .atZone(java.time.ZoneId.systemDefault()).toLocalDate().toEpochDay().toString()
3118− }
3119−}
3120−
3121−// The medium-date formatter is an ICU locale lookup; cache one instance instead of
3122−// allocating a fresh one per buildMessageListItems call, rebuilding only if the default
3123−// locale changes at runtime. Main-thread-only, so no synchronization is needed.
3124−private var cachedDateFmt: java.text.DateFormat? = null
3125−private var cachedDateFmtLocale: java.util.Locale? = null
3126−
3127−private fun mediumDateFormat(): java.text.DateFormat {
3128− val locale = java.util.Locale.getDefault()
3129− val existing = cachedDateFmt
3130− if (existing != null && cachedDateFmtLocale == locale) return existing
3131− return java.text.DateFormat.getDateInstance(java.text.DateFormat.MEDIUM).also {
3132− cachedDateFmt = it
3133− cachedDateFmtLocale = locale
3134− }
3135−}
3136−
3137−/**
3138− * Resolve a day-key back to a human-readable label. "Today" / "Yesterday" for the
3139− * recent days, otherwise a locale-stable medium-date format. Returns an empty string
3140− * when [dayKey] is empty (no timestamp) so no separator is rendered for un-timestamped
3141− * messages.
3142− */
3143−private fun dayLabel(
3144− dayKey: String,
3145− ts: Long,
3146− today: java.time.LocalDate,
3147− todayLabel: String,
3148− yesterdayLabel: String,
3149− dateFmt: java.text.DateFormat,
3150−): String {
3151− if (dayKey.isEmpty()) return ""
3152− val epochDay = dayKey.toLongOrNull() ?: return ""
3153− val date = java.time.LocalDate.ofEpochDay(epochDay)
3154− return when {
3155− date == today -> todayLabel
3156− date == today.minusDays(1) -> yesterdayLabel
3157− else -> dateFmt.format(java.util.Date(ts))
3158− }
3159−}
3160−
3161−/**
3162− * A centered day divider in the message list. Renders nothing for an empty label
3163− * (the no-timestamp case) so un-timestamped messages don't get a stray blank divider.
3164− */
3165−@Composable
3166−private fun DateSeparator(label: String) {
3167− if (label.isBlank()) return
3168− Row(
3169− modifier = Modifier.fillMaxWidth(),
3170− horizontalArrangement = Arrangement.Center,
3171− ) {
3172− Surface(
3173− color = MaterialTheme.colorScheme.surfaceVariant,
3174− shape = MaterialTheme.shapes.small,
3175− // Marked as a heading so TalkBack users can navigate day-by-day with the
3176− // heading-skip gesture — the canonical affordance for date dividers in a list.
3177− modifier = Modifier.semantics(mergeDescendants = true) { heading() },
3178− ) {
3179− Text(
3180− label,
3181− style = MaterialTheme.typography.labelSmall,
3182− color = MaterialTheme.colorScheme.onSurfaceVariant,
3183− modifier = Modifier.padding(horizontal = 12.dp, vertical = 4.dp),
3184− )
3185− }
3186− }
3187−}
3188−
3189−/** Skeleton placeholder bubbles for the chat loading and run-started states. Alpha pulses
3190− * (gated by reduced-motion) to convey ongoing work; the column carries the a11y label so
3191− * TalkBack announces "Loading" instead of reading the skeleton bars. Rendered as a
3192− * [BoxScope] extension so it can align itself to the top center of its host box. */
3193−@Composable
3194−private fun androidx.compose.foundation.layout.BoxScope.ChatSkeleton(topPad: androidx.compose.ui.unit.Dp) {
3195− val loadingLabel = stringResource(R.string.loading)
3196− val reducedMotion = LocalReducedMotion.current
3197− val transition = rememberInfiniteTransition(label = "skeleton")
3198− val pulse by transition.animateFloat(
3199− initialValue = 0.35f,
3200− targetValue = 0.7f,
3201− animationSpec = infiniteRepeatable(tween(900), RepeatMode.Reverse),
3202− label = "skeletonAlpha",
3203− )
3204− val skeletonAlpha = if (reducedMotion) 0.5f else pulse
3205− val skeletonColor = MaterialTheme.colorScheme.surfaceVariant
3206− @Composable
3207− fun bar(widthFraction: Float) {
3208− Box(
3209− Modifier
3210− .fillMaxWidth(widthFraction)
3211− .height(14.dp)
3212− .clip(RoundedCornerShape(4.dp))
3213− .background(skeletonColor)
3214− .alpha(skeletonAlpha),
3215− )
3216− }
3217− Column(
3218− modifier = Modifier
3219− .align(Alignment.TopCenter)
3220− .padding(top = topPad)
3221− .padding(16.dp)
3222− .fillMaxWidth()
3223− .semantics { contentDescription = loadingLabel },
3224− verticalArrangement = Arrangement.spacedBy(14.dp),
3225− ) {
3226− repeat(4) { i ->
3227− val left = i % 2 == 0
3228− Row(
3229− modifier = Modifier.fillMaxWidth(),
3230− horizontalArrangement = if (left) Arrangement.Start else Arrangement.End,
3231− ) {
3232− Column(
3233− modifier = Modifier.fillMaxWidth(if (left) 0.7f else 0.55f),
3234− verticalArrangement = Arrangement.spacedBy(6.dp),
3235− ) {
3236− bar(1f)
3237− bar(0.8f)
3238− }
3239− }
3240− }
3241− }
3242−}