Increase stories caption limit to 1500 grapheme clusters.

app/src/main/java/org/thoughtcrime/securesms/components/ViewBinderDelegate.kt

@@ -3,10 +3,8 @@ package org.thoughtcrime.securesms.components
 import android.view.View
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.DefaultLifecycleObserver
-import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleOwner
 import androidx.viewbinding.ViewBinding
-import org.whispersystems.signalservice.api.util.Preconditions
 import kotlin.reflect.KProperty
 
 /**
@@ -18,8 +16,6 @@ class ViewBinderDelegate<T : ViewBinding>(private val bindingFactory: (View) ->
   private var binding: T? = null
 
   operator fun getValue(thisRef: Fragment, property: KProperty<*>): T {
-    Preconditions.checkState(thisRef.viewLifecycleOwner.lifecycle.currentState.isAtLeast(Lifecycle.State.CREATED))
-
     if (binding == null) {
       thisRef.viewLifecycleOwner.lifecycle.addObserver(this@ViewBinderDelegate)
       binding = bindingFactory(thisRef.requireView())

app/src/main/java/org/thoughtcrime/securesms/mediasend/v2/MediaSelectionRepository.kt

@@ -164,7 +164,7 @@ class MediaSelectionRepository(context: Context) {
     } else {
       val iterator = BreakIteratorCompat.getInstance()
       iterator.setText(body)
-      iterator.take(Stories.MAX_BODY_SIZE).toString()
+      iterator.take(Stories.MAX_CAPTION_SIZE).toString()
     }
   }
 

app/src/main/java/org/thoughtcrime/securesms/mediasend/v2/MediaSelectionViewModel.kt

@@ -5,21 +5,27 @@ import android.os.Bundle
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.core.Flowable
 import io.reactivex.rxjava3.core.Maybe
 import io.reactivex.rxjava3.core.Observable
 import io.reactivex.rxjava3.disposables.CompositeDisposable
 import io.reactivex.rxjava3.disposables.Disposable
 import io.reactivex.rxjava3.kotlin.plusAssign
 import io.reactivex.rxjava3.kotlin.subscribeBy
+import io.reactivex.rxjava3.processors.BehaviorProcessor
+import io.reactivex.rxjava3.schedulers.Schedulers
 import io.reactivex.rxjava3.subjects.BehaviorSubject
 import io.reactivex.rxjava3.subjects.PublishSubject
 import io.reactivex.rxjava3.subjects.Subject
+import org.signal.core.util.BreakIteratorCompat
 import org.thoughtcrime.securesms.components.mention.MentionAnnotation
 import org.thoughtcrime.securesms.contacts.paged.ContactSearchKey
 import org.thoughtcrime.securesms.conversation.MessageSendType
 import org.thoughtcrime.securesms.mediasend.Media
 import org.thoughtcrime.securesms.mediasend.MediaSendActivityResult
 import org.thoughtcrime.securesms.mediasend.VideoEditorFragment
+import org.thoughtcrime.securesms.mediasend.v2.review.AddMessageCharacterCount
 import org.thoughtcrime.securesms.mms.MediaConstraints
 import org.thoughtcrime.securesms.mms.SentMediaQuality
 import org.thoughtcrime.securesms.recipients.Recipient
@@ -53,6 +59,8 @@ class MediaSelectionViewModel(
     )
   )
 
+  private val addAMessageUpdatePublisher = BehaviorProcessor.create<CharSequence>()
+
   val isContactSelectionRequired = destination == MediaSelectionDestination.ChooseAfterMediaSelection
 
   val state: LiveData<MediaSelectionState> = store.stateLiveData
@@ -64,6 +72,22 @@ class MediaSelectionViewModel(
 
   private val disposables = CompositeDisposable()
 
+  fun watchAddAMessageCount(): Flowable<AddMessageCharacterCount> {
+    return addAMessageUpdatePublisher
+      .onBackpressureLatest()
+      .map {
+        val iterator = BreakIteratorCompat.getInstance()
+        iterator.setText(it)
+        AddMessageCharacterCount(iterator.countBreaks())
+      }
+      .subscribeOn(Schedulers.io())
+      .observeOn(AndroidSchedulers.mainThread())
+  }
+
+  fun updateAddAMessageCount(input: CharSequence?) {
+    addAMessageUpdatePublisher.onNext(input ?: "")
+  }
+
   private val isMeteredDisposable: Disposable = repository.isMetered.subscribe { metered ->
     store.update {
       it.copy(

app/src/main/java/org/thoughtcrime/securesms/mediasend/v2/review/AddMessageCharacterCount.kt

@@ -0,0 +1,21 @@
+package org.thoughtcrime.securesms.mediasend.v2.review
+
+import org.thoughtcrime.securesms.stories.Stories
+import kotlin.math.max
+
+/**
+ * Manages the current character count for the add-message input.
+ *
+ * We only want to display the count if DISPLAY_COUNT or less characters remain.
+ * The actual count is calculated in the background by the ViewModel.
+ */
+@JvmInline
+value class AddMessageCharacterCount(private val count: Int) {
+  fun getRemaining(): Int = max(Stories.MAX_CAPTION_SIZE - count, 0)
+
+  fun shouldDisplayCount(): Boolean = getRemaining() <= DISPLAY_COUNT_THRESHOLD
+
+  companion object {
+    private const val DISPLAY_COUNT_THRESHOLD = 50
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/mediasend/v2/review/AddMessageDialogFragment.kt

@@ -7,6 +7,7 @@ import android.view.KeyEvent
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.core.widget.addTextChangedListener
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.viewModels
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
@@ -14,10 +15,8 @@ import io.reactivex.rxjava3.disposables.CompositeDisposable
 import io.reactivex.rxjava3.kotlin.plusAssign
 import org.signal.core.util.EditTextUtil
 import org.thoughtcrime.securesms.R
-import org.thoughtcrime.securesms.components.ComposeText
-import org.thoughtcrime.securesms.components.InputAwareLayout
 import org.thoughtcrime.securesms.components.KeyboardEntryDialogFragment
-import org.thoughtcrime.securesms.components.emoji.EmojiToggle
+import org.thoughtcrime.securesms.components.ViewBinderDelegate
 import org.thoughtcrime.securesms.components.emoji.MediaKeyboard
 import org.thoughtcrime.securesms.components.mention.MentionAnnotation
 import org.thoughtcrime.securesms.conversation.ui.inlinequery.InlineQuery
@@ -27,6 +26,7 @@ import org.thoughtcrime.securesms.conversation.ui.inlinequery.InlineQueryResults
 import org.thoughtcrime.securesms.conversation.ui.inlinequery.InlineQueryViewModel
 import org.thoughtcrime.securesms.conversation.ui.mentions.MentionsPickerFragment
 import org.thoughtcrime.securesms.conversation.ui.mentions.MentionsPickerViewModel
+import org.thoughtcrime.securesms.databinding.V2MediaAddMessageDialogFragmentBinding
 import org.thoughtcrime.securesms.keyboard.KeyboardPage
 import org.thoughtcrime.securesms.keyboard.KeyboardPagerViewModel
 import org.thoughtcrime.securesms.keyvalue.SignalStore
@@ -58,11 +58,8 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
     ownerProducer = { requireActivity() }
   )
 
-  private lateinit var input: ComposeText
+  private val binding by ViewBinderDelegate(V2MediaAddMessageDialogFragmentBinding::bind)
-  private lateinit var emojiDrawerToggle: EmojiToggle
   private lateinit var emojiDrawerStub: Stub<MediaKeyboard>
-  private lateinit var hud: InputAwareLayout
-  private lateinit var mentionsContainer: ViewGroup
   private lateinit var inlineQueryResultsController: InlineQueryResultsController
 
   private var requestedEmojiDrawer: Boolean = false
@@ -79,28 +76,34 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
   }
 
   override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-    input = view.findViewById(R.id.add_a_message_input)
+    emojiDrawerStub = Stub(binding.content.emojiDrawerStub)
 
     if (Stories.isFeatureEnabled()) {
-      EditTextUtil.addGraphemeClusterLimitFilter(input, Stories.MAX_BODY_SIZE)
+      EditTextUtil.addGraphemeClusterLimitFilter(binding.content.addAMessageInput, Stories.MAX_CAPTION_SIZE)
     }
 
-    input.setText(requireArguments().getCharSequence(ARG_INITIAL_TEXT))
+    binding.content.addAMessageInput.addTextChangedListener(afterTextChanged = {
+      viewModel.updateAddAMessageCount(it)
+    })
+
+    binding.content.addAMessageInput.setText(requireArguments().getCharSequence(ARG_INITIAL_TEXT))
 
-    emojiDrawerToggle = view.findViewById(R.id.emoji_toggle)
-    emojiDrawerStub = Stub(view.findViewById(R.id.emoji_drawer_stub))
     if (SignalStore.settings().isPreferSystemEmoji) {
-      emojiDrawerToggle.visible = false
+      binding.content.emojiToggle.visible = false
     } else {
-      emojiDrawerToggle.setOnClickListener { onEmojiToggleClicked() }
+      binding.content.emojiToggle.setOnClickListener { onEmojiToggleClicked() }
     }
 
-    hud = view.findViewById(R.id.hud)
+    binding.hud.setOnClickListener { dismissAllowingStateLoss() }
-    hud.setOnClickListener { dismissAllowingStateLoss() }
 
     val confirm: View = view.findViewById(R.id.confirm_button)
     confirm.setOnClickListener { dismissAllowingStateLoss() }
 
+    disposables += viewModel.watchAddAMessageCount().subscribe { count ->
+      binding.content.addAMessageLimit.visible = count.shouldDisplayCount()
+      binding.content.addAMessageLimit.text = count.getRemaining().toString()
+    }
+
     disposables.add(
       viewModel.hudCommands.observeOn(AndroidSchedulers.mainThread()).subscribe {
         when (it) {
@@ -120,18 +123,18 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
     super.onResume()
 
     requestedEmojiDrawer = false
-    ViewUtil.focusAndShowKeyboard(input)
+    ViewUtil.focusAndShowKeyboard(binding.content.addAMessageInput)
   }
 
   override fun onPause() {
     super.onPause()
 
-    ViewUtil.hideKeyboard(requireContext(), input)
+    ViewUtil.hideKeyboard(requireContext(), binding.content.addAMessageInput)
   }
 
   override fun onDismiss(dialog: DialogInterface) {
     super.onDismiss(dialog)
-    viewModel.setMessage(input.text)
+    viewModel.setMessage(binding.content.addAMessageInput.text)
   }
 
   override fun onKeyboardHidden() {
@@ -151,23 +154,21 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
     super.onDestroyView()
     disposables.dispose()
 
-    input.setInlineQueryChangedListener(null)
+    binding.content.addAMessageInput.setInlineQueryChangedListener(null)
-    input.setMentionValidator(null)
+    binding.content.addAMessageInput.setMentionValidator(null)
   }
 
   private fun initializeMentions() {
-    mentionsContainer = requireView().findViewById(R.id.mentions_picker_container)
-
     inlineQueryResultsController = InlineQueryResultsController(
       requireContext(),
       inlineQueryViewModel,
       requireView().findViewById(R.id.background_holder),
       (requireView() as ViewGroup),
-      input,
+      binding.content.addAMessageInput,
       viewLifecycleOwner
     )
 
-    input.setInlineQueryChangedListener(object : InlineQueryChangedListener {
+    binding.content.addAMessageInput.setInlineQueryChangedListener(object : InlineQueryChangedListener {
       override fun onQueryChanged(inlineQuery: InlineQuery) {
         when (inlineQuery) {
           is InlineQuery.Mention -> {
@@ -196,7 +197,7 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
     disposables += inlineQueryViewModel
       .selection
       .observeOn(AndroidSchedulers.mainThread())
-      .subscribe { r -> input.replaceText(r) }
+      .subscribe { r -> binding.content.addAMessageInput.replaceText(r) }
 
     val recipientId: RecipientId = viewModel.destination.getRecipientSearchKey()?.recipientId ?: return
 
@@ -204,7 +205,7 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
       this.recipient = recipient
       mentionsViewModel.onRecipientChange(recipient)
 
-      input.setMentionValidator { annotations ->
+      binding.content.addAMessageInput.setMentionValidator { annotations ->
         if (!recipient.isPushV2Group) {
           annotations
         } else {
@@ -221,7 +222,7 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
     }
 
     mentionsViewModel.selectedRecipient.observe(viewLifecycleOwner) { recipient ->
-      input.replaceTextWithMention(recipient.getDisplayName(requireContext()), recipient.id)
+      binding.content.addAMessageInput.replaceTextWithMention(recipient.getDisplayName(requireContext()), recipient.id)
     }
   }
 
@@ -239,17 +240,17 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
     if (!emojiDrawerStub.resolved()) {
       keyboardPagerViewModel.setOnlyPage(KeyboardPage.EMOJI)
       emojiDrawerStub.get().setFragmentManager(childFragmentManager)
-      emojiDrawerToggle.attach(emojiDrawerStub.get())
+      binding.content.emojiToggle.attach(emojiDrawerStub.get())
     }
 
-    if (hud.currentInput == emojiDrawerStub.get()) {
+    if (binding.hud.currentInput == emojiDrawerStub.get()) {
       requestedEmojiDrawer = false
-      hud.showSoftkey(input)
+      binding.hud.showSoftkey(binding.content.addAMessageInput)
     } else {
       requestedEmojiDrawer = true
-      hud.hideSoftkey(input) {
+      binding.hud.hideSoftkey(binding.content.addAMessageInput) {
-        hud.post {
+        binding.hud.post {
-          hud.show(input, emojiDrawerStub.get())
+          binding.hud.show(binding.content.addAMessageInput, emojiDrawerStub.get())
         }
       }
     }
@@ -268,11 +269,11 @@ class AddMessageDialogFragment : KeyboardEntryDialogFragment(R.layout.v2_media_a
   }
 
   private fun onEmojiSelected(emoji: String?) {
-    input.insertEmoji(emoji)
+    binding.content.addAMessageInput.insertEmoji(emoji)
   }
 
   private fun onKeyEvent(keyEvent: KeyEvent?) {
-    input.dispatchKeyEvent(keyEvent)
+    binding.content.addAMessageInput.dispatchKeyEvent(keyEvent)
   }
 
   companion object {

app/src/main/java/org/thoughtcrime/securesms/sharing/MultiShareArgs.java

@@ -168,7 +168,7 @@ public final class MultiShareArgs implements Parcelable {
       BreakIteratorCompat breakIteratorCompat = BreakIteratorCompat.getInstance();
       breakIteratorCompat.setText(getDraftText());
 
-      if (breakIteratorCompat.countBreaks() > Stories.MAX_BODY_SIZE) {
+      if (breakIteratorCompat.countBreaks() > Stories.MAX_TEXT_STORY_SIZE) {
         return false;
       }
     }

app/src/main/java/org/thoughtcrime/securesms/sharing/MultiShareSender.java

@@ -432,7 +432,7 @@ public final class MultiShareSender {
     BreakIteratorCompat breakIteratorCompat = BreakIteratorCompat.getInstance();
     breakIteratorCompat.setText(draftText);
 
-    String trimmed = breakIteratorCompat.take(Stories.MAX_BODY_SIZE).toString();
+    String trimmed = breakIteratorCompat.take(Stories.MAX_TEXT_STORY_SIZE).toString();
     if (linkPreview == null) {
       return trimmed;
     }

app/src/main/java/org/thoughtcrime/securesms/stories/Stories.kt

@@ -47,7 +47,8 @@ object Stories {
 
   private val TAG = Log.tag(Stories::class.java)
 
-  const val MAX_BODY_SIZE = 700
+  const val MAX_TEXT_STORY_SIZE = 700
+  const val MAX_CAPTION_SIZE = 1500
 
   @JvmField
   val MAX_VIDEO_DURATION_MILLIS = TimeUnit.SECONDS.toMillis(30)

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/page/StoryViewerPageFragment.kt

@@ -12,7 +12,9 @@ import android.media.AudioManager
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
+import android.text.method.ScrollingMovementMethod
 import android.view.GestureDetector
+import android.view.GestureDetector.SimpleOnGestureListener
 import android.view.MotionEvent
 import android.view.ScaleGestureDetector
 import android.view.View
@@ -826,9 +828,16 @@ class StoryViewerPageFragment :
   }
 
   private fun onShowCaptionOverlay(caption: TextView, largeCaption: TextView, largeCaptionOverlay: View) {
+    sharedViewModel.setIsChildScrolling(true)
+
     caption.visible = false
     largeCaption.visible = true
     largeCaptionOverlay.visible = true
+    largeCaption.movementMethod = ScrollingMovementMethod()
+    largeCaption.scrollY = 0
+    largeCaption.setOnClickListener {
+      onHideCaptionOverlay(caption, largeCaption, largeCaptionOverlay)
+    }
     largeCaptionOverlay.setOnClickListener {
       onHideCaptionOverlay(caption, largeCaption, largeCaptionOverlay)
     }
@@ -839,8 +848,10 @@ class StoryViewerPageFragment :
     caption.visible = true
     largeCaption.visible = false
     largeCaptionOverlay.visible = false
+    largeCaption.setOnClickListener(null)
     largeCaptionOverlay.setOnClickListener(null)
     viewModel.setIsDisplayingCaptionOverlay(false)
+    sharedViewModel.setIsChildScrolling(false)
   }
 
   private fun presentFrom(from: TextView, storyPost: StoryPost) {

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/page/StoryViewerPlaybackState.kt

@@ -25,7 +25,10 @@ data class StoryViewerPlaybackState(
 ) {
   val hideChromeImmediate: Boolean = isRunningSharedElementAnimation
 
-  val hideChrome: Boolean = isRunningSharedElementAnimation || isUserLongTouching || isUserScrollingChild || isUserScaling
+  val hideChrome: Boolean = isRunningSharedElementAnimation ||
+    isUserLongTouching ||
+    (isUserScrollingChild && !isDisplayingCaptionOverlay) ||
+    isUserScaling
 
   val isPaused: Boolean = !areSegmentsInitialized ||
     isUserTouching ||

app/src/main/res/drawable/rounded_rectangle_secondary_dark.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
-    <solid android:color="@color/core_grey_75"/>
+    <solid android:color="@color/signal_dark_colorSurfaceVariant"/>
-    <corners android:radius="20dp"/>
+    <corners android:radius="18dp"/>
 </shape>

app/src/main/res/layout/stories_viewer_fragment_page.xml

@@ -132,14 +132,14 @@
     <org.thoughtcrime.securesms.components.emoji.EmojiTextView
         android:id="@+id/story_large_caption"
         android:layout_width="0dp"
-        android:layout_height="0dp"
+        android:layout_height="wrap_content"
         android:layout_marginStart="16dp"
         android:layout_marginTop="24dp"
         android:layout_marginEnd="16dp"
         android:layout_marginBottom="24dp"
-        android:gravity="bottom"
         android:textAppearance="@style/Signal.Text.Body"
         android:visibility="gone"
+        android:scrollbars="vertical"
         app:layout_constrainedHeight="true"
         app:layout_constraintBottom_toTopOf="@id/story_from_barrier"
         app:layout_constraintEnd_toEndOf="parent"

app/src/main/res/layout/v2_media_add_message_dialog_fragment.xml

@@ -1,11 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <org.thoughtcrime.securesms.components.InputAwareLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    tools:viewBindingIgnore="true"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/hud"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <include layout="@layout/v2_media_add_message_dialog_fragment_content" />
+    <include android:id="@+id/content" layout="@layout/v2_media_add_message_dialog_fragment_content" />
 </org.thoughtcrime.securesms.components.InputAwareLayout>

app/src/main/res/layout/v2_media_add_message_dialog_fragment_content.xml

@@ -1,8 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    tools:viewBindingIgnore="true"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -26,7 +25,7 @@
         android:layout_height="0dp"
         android:background="@drawable/rounded_rectangle_secondary_dark"
         app:layout_constraintBottom_toBottomOf="@id/add_a_message_input"
-        app:layout_constraintEnd_toEndOf="@id/add_a_message_input"
+        app:layout_constraintEnd_toEndOf="@id/add_a_message_limit"
         app:layout_constraintStart_toStartOf="@id/emoji_toggle"
         app:layout_constraintTop_toTopOf="@id/add_a_message_input" />
 
@@ -49,7 +48,7 @@
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
-        android:layout_marginEnd="6dp"
+        app:layout_goneMarginEnd="6dp"
         android:layout_marginBottom="8dp"
         android:background="@null"
         android:hint="@string/MediaReviewFragment__add_a_message"
@@ -61,11 +60,25 @@
         android:paddingEnd="10dp"
         android:textAppearance="@style/Signal.Text.Body"
         app:layout_constraintBottom_toTopOf="@id/emoji_drawer_stub"
-        app:layout_constraintEnd_toStartOf="@id/confirm_button"
+        app:layout_constraintEnd_toStartOf="@id/add_a_message_limit"
         app:layout_constraintStart_toEndOf="@id/emoji_toggle"
         app:layout_constraintTop_toTopOf="@id/input_barrier"
         app:layout_goneMarginStart="12dp" />
 
+    <TextView
+        android:id="@+id/add_a_message_limit"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="6dp"
+        android:paddingEnd="12dp"
+        android:textAppearance="@style/Signal.Text.BodySmall"
+        android:textColor="@color/signal_colorOnSurfaceVariant"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="@id/add_a_message_input"
+        app:layout_constraintEnd_toStartOf="@id/confirm_button"
+        tools:text="50"
+        tools:visibility="visible" />
+
     <androidx.appcompat.widget.AppCompatImageView
         android:id="@+id/confirm_button"
         android:layout_width="48dp"