Merge branch 'dev' into release/1.19.2

app/build.gradle

@@ -274,8 +274,6 @@ dependencies {
     implementation 'pl.tajchert:waitingdots:0.1.0'
     implementation 'com.vanniktech:android-image-cropper:4.5.0'
     implementation 'com.melnykov:floatingactionbutton:1.3.0'
-    implementation 'com.google.zxing:android-integration:3.1.0'
-    implementation 'com.google.zxing:core:3.2.1'
     implementation ('com.davemorrissey.labs:subsampling-scale-image-view:3.6.0') {
         exclude group: 'com.android.support', module: 'support-annotations'
     }
@@ -352,7 +350,6 @@ dependencies {
     testImplementation 'org.conscrypt:conscrypt-openjdk-uber:2.5.2' // For Robolectric
     testImplementation 'app.cash.turbine:turbine:1.1.0'
 
-
     implementation 'com.github.bumptech.glide:compose:1.0.0-alpha.5'
     implementation "androidx.compose.ui:ui:$composeVersion"
     implementation "androidx.compose.animation:animation:$composeVersion"
@@ -371,7 +368,8 @@ dependencies {
     implementation "androidx.camera:camera-lifecycle:1.3.2"
     implementation "androidx.camera:camera-view:1.3.2"
 
-    implementation "com.google.mlkit:barcode-scanning:17.2.0"
+    // Note: ZXing 3.5.3 is the latest stable release as of 2024/08/21
+    implementation "com.google.zxing:core:$zxingVersion"
 }
 
 static def getLastCommitTimestamp() {

app/src/main/java/org/thoughtcrime/securesms/avatar/AvatarSelection.kt

@@ -18,7 +18,6 @@ import org.session.libsignal.utilities.ExternalStorageUtil.getImageDir
 import org.session.libsignal.utilities.Log
 import org.session.libsignal.utilities.NoExternalStorageException
 import org.thoughtcrime.securesms.util.FileProviderUtil
-import org.thoughtcrime.securesms.util.IntentUtils
 import java.io.File
 import java.io.IOException
 import java.util.LinkedList
@@ -104,13 +103,8 @@ class AvatarSelection(
         includeClear: Boolean
     ): Intent {
         val extraIntents: MutableList<Intent> = LinkedList()
-        var galleryIntent = Intent(Intent.ACTION_PICK)
+        val galleryIntent = Intent(Intent.ACTION_OPEN_DOCUMENT)
-        galleryIntent.setDataAndType(MediaStore.Images.Media.INTERNAL_CONTENT_URI, "image/*")
-
-        if (!IntentUtils.isResolvable(context, galleryIntent)) {
-            galleryIntent = Intent(Intent.ACTION_GET_CONTENT)
         galleryIntent.setType("image/*")
-        }
 
         if (tempCaptureFile != null) {
             val uri = FileProviderUtil.getUriFor(context, tempCaptureFile)

app/src/main/java/org/thoughtcrime/securesms/calls/WebRtcCallActivity.kt

@@ -27,8 +27,8 @@ import network.loki.messenger.R
 import network.loki.messenger.databinding.ActivityWebrtcBinding
 import org.apache.commons.lang3.time.DurationFormatUtils
 import org.session.libsession.messaging.contacts.Contact
-import org.session.libsession.utilities.Address
 import org.session.libsession.utilities.TextSecurePreferences
+import org.session.libsession.utilities.truncateIdForDisplay
 import org.session.libsignal.utilities.Log
 import org.thoughtcrime.securesms.PassphraseRequiredActionBarActivity
 import org.thoughtcrime.securesms.dependencies.DatabaseComponent
@@ -194,8 +194,13 @@ class WebRtcCallActivity : PassphraseRequiredActionBarActivity() {
         clipFloatingInsets()
 
         // set up the user avatar
-        TextSecurePreferences.getLocalNumber(this)?.let {
+        TextSecurePreferences.getLocalNumber(this)?.let{
-            binding.userAvatar.load(Address.fromSerialized(it))
+            val username = TextSecurePreferences.getProfileName(this) ?: truncateIdForDisplay(it)
+            binding.userAvatar.apply {
+                publicKey = it
+                displayName = username
+                update()
+            }
         }
     }
 
@@ -327,6 +332,8 @@ class WebRtcCallActivity : PassphraseRequiredActionBarActivity() {
 
             launch {
                 viewModel.recipient.collect { latestRecipient ->
+                    binding.contactAvatar.recycle()
+
                     if (latestRecipient.recipient != null) {
                         val contactPublicKey = latestRecipient.recipient.address.serialize()
                         val contactDisplayName = getUserDisplayName(contactPublicKey)
@@ -334,7 +341,11 @@ class WebRtcCallActivity : PassphraseRequiredActionBarActivity() {
                         binding.remoteRecipientName.text = contactDisplayName
 
                         // sort out the contact's avatar
-                        binding.contactAvatar.load(latestRecipient.recipient)
+                        binding.contactAvatar.apply {
+                            publicKey = contactPublicKey
+                            displayName = contactDisplayName
+                            update()
+                        }
                     }
                 }
             }

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

@@ -3,224 +3,164 @@ package org.thoughtcrime.securesms.components
 import android.content.Context
 import android.util.AttributeSet
 import android.view.LayoutInflater
-import android.widget.FrameLayout
+import android.view.View
-import androidx.core.view.isVisible
+import android.widget.ImageView
-import com.bumptech.glide.Glide
+import android.widget.RelativeLayout
 import com.bumptech.glide.load.engine.DiskCacheStrategy
-import dagger.hilt.android.AndroidEntryPoint
-import kotlinx.coroutines.DelicateCoroutinesApi
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
 import network.loki.messenger.R
 import network.loki.messenger.databinding.ViewProfilePictureBinding
 import org.session.libsession.avatars.ContactColors
-import org.session.libsession.avatars.ContactPhoto
 import org.session.libsession.avatars.PlaceholderAvatarPhoto
+import org.session.libsession.avatars.ProfileContactPhoto
 import org.session.libsession.avatars.ResourceContactPhoto
+import org.session.libsession.messaging.contacts.Contact
 import org.session.libsession.utilities.Address
-import org.session.libsession.utilities.TextSecurePreferences
+import org.session.libsession.utilities.AppTextSecurePreferences
+import org.session.libsession.utilities.GroupUtil
 import org.session.libsession.utilities.recipients.Recipient
-import org.thoughtcrime.securesms.database.GroupDatabase
+import org.session.libsignal.utilities.Log
-import javax.inject.Inject
+import org.thoughtcrime.securesms.dependencies.DatabaseComponent
+import com.bumptech.glide.Glide
+import com.bumptech.glide.RequestManager
 
-@AndroidEntryPoint
+class ProfilePictureView @JvmOverloads constructor(
-class ProfilePictureView : FrameLayout {
+    context: Context, attrs: AttributeSet? = null
-    constructor(context: Context) : super(context)
+) : RelativeLayout(context, attrs) {
-    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
+    private val TAG = "ProfilePictureView"
-    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(
-        context,
-        attrs,
-        defStyleAttr
-    )
-
-    @Inject
-    lateinit var groupDatabase: GroupDatabase
 
     private val binding = ViewProfilePictureBinding.inflate(LayoutInflater.from(context), this)
-    private var lastLoadJob: Job? = null
+    private val glide: RequestManager = Glide.with(this)
-    private var lastLoadAddress: Address? = null
+    private val prefs = AppTextSecurePreferences(context)
+    private val userPublicKey = prefs.getLocalNumber()
+    var publicKey: String? = null
+    var displayName: String? = null
+    var additionalPublicKey: String? = null
+    var additionalDisplayName: String? = null
 
-    private val unknownRecipientDrawable by lazy(LazyThreadSafetyMode.NONE) {
+    private val profilePicturesCache = mutableMapOf<View, Recipient>()
-        ResourceContactPhoto(R.drawable.ic_profile_default)
+    private val resourcePadding by lazy {
-            .asDrawable(context, ContactColors.UNKNOWN_COLOR.toConversationColor(context), false)
+        context.resources.getDimensionPixelSize(R.dimen.normal_padding).toFloat()
+    }
+    private val unknownRecipientDrawable by lazy { ResourceContactPhoto(R.drawable.ic_profile_default)
+        .asDrawable(context, ContactColors.UNKNOWN_COLOR.toConversationColor(context), false, resourcePadding) }
+    private val unknownOpenGroupDrawable by lazy { ResourceContactPhoto(R.drawable.ic_notification)
+        .asDrawable(context, ContactColors.UNKNOWN_COLOR.toConversationColor(context), false, resourcePadding) }
+
+    constructor(context: Context, sender: Recipient): this(context) {
+        update(sender)
     }
 
-    private val unknownOpenGroupDrawable by lazy(LazyThreadSafetyMode.NONE) {
+    fun update(recipient: Recipient) {
-        ResourceContactPhoto(R.drawable.ic_notification)
+        recipient.run { update(address, isClosedGroupRecipient, isOpenGroupInboxRecipient) }
-            .asDrawable(context, ContactColors.UNKNOWN_COLOR.toConversationColor(context), false)
     }
 
-    private fun setShowAsDoubleMode(showAsDouble: Boolean) {
+    fun update(
-        binding.doubleModeImageViewContainer.isVisible = showAsDouble
+        address: Address,
-        binding.singleModeImageView.isVisible = !showAsDouble
+        isClosedGroupRecipient: Boolean = false,
-    }
+        isOpenGroupInboxRecipient: Boolean = false
+    ) {
+        fun getUserDisplayName(publicKey: String): String = prefs.takeIf { userPublicKey == publicKey }?.getProfileName()
+            ?: DatabaseComponent.get(context).sessionContactDatabase().getContactWithAccountID(publicKey)?.displayName(Contact.ContactContext.REGULAR)
+            ?: publicKey
 
-    private fun cancelLastLoadJob() {
+        if (isClosedGroupRecipient) {
-        lastLoadJob?.cancel()
+            val members = DatabaseComponent.get(context).groupDatabase()
-        lastLoadJob = null
+                .getGroupMemberAddresses(address.toGroupString(), true)
-    }
+                .sorted()
-
+                .take(2)
-    @OptIn(DelicateCoroutinesApi::class)
+            if (members.size <= 1) {
-    private fun loadAsDoubleImages(model: LoadModel) {
+                publicKey = ""
-        cancelLastLoadJob()
+                displayName = ""
-
+                additionalPublicKey = ""
-        // The use of GlobalScope is intentional here, as there is no better lifecycle scope that we can use
+                additionalDisplayName = ""
-        // to launch a coroutine from a view. The potential memory leak is not a concern here, as
-        // the coroutine is very short-lived. If you change the code here to be long live then you'll
-        // need to find a better scope to launch the coroutine from.
-        lastLoadJob = GlobalScope.launch(Dispatchers.Main) {
-            data class GroupMemberInfo(
-                val contactPhoto: ContactPhoto?,
-                val placeholderAvatarPhoto: PlaceholderAvatarPhoto,
-            )
-
-            // Load group avatar if available, otherwise load member avatars
-            val groupAvatarOrMemberAvatars = withContext(Dispatchers.Default) {
-                model.loadRecipient(context).contactPhoto
-                    ?: groupDatabase.getGroupMembers(model.address.toGroupString(), true)
-                        .map {
-                            GroupMemberInfo(
-                                contactPhoto = it.contactPhoto,
-                                placeholderAvatarPhoto = PlaceholderAvatarPhoto(
-                                    hashString = it.address.serialize(),
-                                    displayName = it.displayName()
-                                )
-                            )
-                        }
-            }
-
-            when (groupAvatarOrMemberAvatars) {
-                is ContactPhoto -> {
-                    setShowAsDoubleMode(false)
-                    Glide.with(this@ProfilePictureView)
-                        .load(groupAvatarOrMemberAvatars)
-                        .error(unknownRecipientDrawable)
-                        .circleCrop()
-                        .diskCacheStrategy(DiskCacheStrategy.NONE)
-                        .into(binding.singleModeImageView)
-                }
-
-                is List<*> -> {
-                    val first = groupAvatarOrMemberAvatars.getOrNull(0) as? GroupMemberInfo
-                    val second = groupAvatarOrMemberAvatars.getOrNull(1) as? GroupMemberInfo
-                    setShowAsDoubleMode(true)
-                    Glide.with(binding.doubleModeImageView1)
-                        .load(first?.let { it.contactPhoto ?: it.placeholderAvatarPhoto })
-                        .error(first?.placeholderAvatarPhoto ?: unknownRecipientDrawable)
-                        .circleCrop()
-                        .diskCacheStrategy(DiskCacheStrategy.NONE)
-                        .into(binding.doubleModeImageView1)
-
-                    Glide.with(binding.doubleModeImageView2)
-                        .load(second?.let { it.contactPhoto ?: it.placeholderAvatarPhoto })
-                        .error(second?.placeholderAvatarPhoto ?: unknownRecipientDrawable)
-                        .circleCrop()
-                        .diskCacheStrategy(DiskCacheStrategy.NONE)
-                        .into(binding.doubleModeImageView2)
-                }
-
-                else -> {
-                    setShowAsDoubleMode(false)
-                    binding.singleModeImageView.setImageDrawable(unknownRecipientDrawable)
-                }
-            }
-        }
-    }
-
-    @OptIn(DelicateCoroutinesApi::class)
-    private fun loadAsSingleImage(model: LoadModel) {
-        cancelLastLoadJob()
-
-        setShowAsDoubleMode(false)
-
-        // Only clear the old image if the address has changed. This is important as we have a delay
-        // in loading the image, if this view is reused for another address before the image is loaded,
-        // the previous image could be displayed for a short period of time. We would want to avoid
-        // displaying the wrong image, even for a short time.
-        // However, if we are displaying the same user's image again, it's ok to show the old
-        // image until the new one is loaded. This is a trade-off between performance and correctness.
-        if (lastLoadAddress != model.address) {
-            Glide.with(this).clear(this)
-        }
-
-        // The use of GlobalScope is intentional here, as there is no better lifecycle scope that we can use
-        // to launch a coroutine from a view. The potential memory leak is not a concern here, as
-        // the coroutine is very short-lived. If you change the code here to be long live then you'll
-        // need to find a better scope to launch the coroutine from.
-        lastLoadJob = GlobalScope.launch(Dispatchers.Main) {
-            val (contactPhoto, avatarPlaceholder) = withContext(Dispatchers.Default) {
-                model.loadRecipient(context).let {
-                    it.contactPhoto to PlaceholderAvatarPhoto(it.address.serialize(), it.displayName())
-                }
-            }
-
-            val address = model.address
-
-            val errorModel: Any = when {
-                address.isCommunity -> unknownOpenGroupDrawable
-                address.isContact -> avatarPlaceholder
-                else -> unknownRecipientDrawable
-            }
-
-            Glide.with(this@ProfilePictureView)
-                .load(contactPhoto)
-                .error(errorModel)
-                .circleCrop()
-                .diskCacheStrategy(DiskCacheStrategy.NONE)
-                .into(binding.singleModeImageView)
-        }
-    }
-
-    fun load(recipient: Recipient) {
-        if (recipient.address.isClosedGroup) {
-            loadAsDoubleImages(LoadModel.RecipientModel(recipient))
             } else {
-            loadAsSingleImage(LoadModel.RecipientModel(recipient))
+                val pk = members.getOrNull(0)?.serialize() ?: ""
+                publicKey = pk
+                displayName = getUserDisplayName(pk)
+                val apk = members.getOrNull(1)?.serialize() ?: ""
+                additionalPublicKey = apk
+                additionalDisplayName = getUserDisplayName(apk)
             }
-
+        } else if(isOpenGroupInboxRecipient) {
-        lastLoadAddress = recipient.address
+            val publicKey = GroupUtil.getDecodedOpenGroupInboxAccountId(address.serialize())
-    }
+            this.publicKey = publicKey
-
+            displayName = getUserDisplayName(publicKey)
-    fun load(address: Address) {
+            additionalPublicKey = null
-        if (address.isClosedGroup) {
-            loadAsDoubleImages(LoadModel.AddressModel(address))
         } else {
-            loadAsSingleImage(LoadModel.AddressModel(address))
+            val publicKey = address.serialize()
+            this.publicKey = publicKey
+            displayName = getUserDisplayName(publicKey)
+            additionalPublicKey = null
+        }
+        update()
     }
 
-        lastLoadAddress = address
+    fun update() {
+        val publicKey = publicKey ?: return Log.w(TAG, "Could not find public key to update profile picture")
+        val additionalPublicKey = additionalPublicKey
+        // if we have a multi avatar setup
+        if (additionalPublicKey != null) {
+            setProfilePictureIfNeeded(binding.doubleModeImageView1, publicKey, displayName)
+            setProfilePictureIfNeeded(binding.doubleModeImageView2, additionalPublicKey, additionalDisplayName)
+            binding.doubleModeImageViewContainer.visibility = View.VISIBLE
+
+            // clear single image
+            glide.clear(binding.singleModeImageView)
+            binding.singleModeImageView.visibility = View.INVISIBLE
+        } else { // single image mode
+            setProfilePictureIfNeeded(binding.singleModeImageView, publicKey, displayName)
+            binding.singleModeImageView.visibility = View.VISIBLE
+
+            // clear multi image
+            glide.clear(binding.doubleModeImageView1)
+            glide.clear(binding.doubleModeImageView2)
+            binding.doubleModeImageViewContainer.visibility = View.INVISIBLE
         }
 
-    private fun Recipient.displayName(): String {
+    }
-        return if (isLocalNumber) {
+
-            TextSecurePreferences.getProfileName(context).orEmpty()
+    private fun setProfilePictureIfNeeded(imageView: ImageView, publicKey: String, displayName: String?) {
+        if (publicKey.isNotEmpty()) {
+            val recipient = Recipient.from(context, Address.fromSerialized(publicKey), false)
+            if (profilePicturesCache[imageView] == recipient) return
+            profilePicturesCache[imageView] = recipient
+            val signalProfilePicture = recipient.contactPhoto
+            val avatar = (signalProfilePicture as? ProfileContactPhoto)?.avatarObject
+
+            glide.clear(imageView)
+
+            val placeholder = PlaceholderAvatarPhoto(publicKey, displayName ?: "${publicKey.take(4)}...${publicKey.takeLast(4)}")
+
+            if (signalProfilePicture != null && avatar != "0" && avatar != "") {
+                glide.load(signalProfilePicture)
+                    .placeholder(unknownRecipientDrawable)
+                    .centerCrop()
+                    .error(glide.load(placeholder))
+                    .diskCacheStrategy(DiskCacheStrategy.NONE)
+                    .circleCrop()
+                    .into(imageView)
+            } else if (recipient.isCommunityRecipient && recipient.groupAvatarId == null) {
+                glide.clear(imageView)
+                glide.load(unknownOpenGroupDrawable)
+                    .centerCrop()
+                    .circleCrop()
+                    .into(imageView)
             } else {
-            profileName ?: name ?: ""
+                glide.load(placeholder)
+                    .placeholder(unknownRecipientDrawable)
+                    .centerCrop()
+                    .circleCrop()
+                    .diskCacheStrategy(DiskCacheStrategy.NONE).circleCrop().into(imageView)
+            }
+        } else {
+            glide.load(unknownRecipientDrawable)
+                .centerCrop()
+                .into(imageView)
         }
     }
 
-    private sealed interface LoadModel {
+    fun recycle() {
-        val address: Address
+        profilePicturesCache.clear()
-
-        /**
-         * Load the recipient if it's not already loaded.
-         */
-        fun loadRecipient(context: Context): Recipient
-
-        data class AddressModel(override val address: Address) : LoadModel {
-            override fun loadRecipient(context: Context): Recipient {
-                return Recipient.from(context, address, false)
-            }
-        }
-
-        data class RecipientModel(val recipient: Recipient) : LoadModel {
-            override val address: Address
-                get() = recipient.address
-
-            override fun loadRecipient(context: Context): Recipient = recipient
-        }
     }
+    // endregion
 }

app/src/main/java/org/thoughtcrime/securesms/contacts/UserView.kt

@@ -53,7 +53,7 @@ class UserView : LinearLayout {
             return contact?.displayName(Contact.ContactContext.REGULAR) ?: publicKey
         }
         val address = user.address.serialize()
-        binding.profilePictureView.load(user)
+        binding.profilePictureView.update(user)
         binding.actionIndicatorImageView.setImageResource(R.drawable.ic_baseline_edit_24)
         binding.nameTextView.text = if (user.isGroupRecipient) user.name else getUserDisplayName(address)
         when (actionIndicator) {
@@ -85,6 +85,7 @@ class UserView : LinearLayout {
     }
 
     fun unbind() {
+        binding.profilePictureView.recycle()
     }
     // endregion
 }

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationActionBarView.kt

@@ -81,7 +81,7 @@ class ConversationActionBarView @JvmOverloads constructor(
     }
 
     fun update(recipient: Recipient, openGroup: OpenGroup? = null, config: ExpirationConfiguration? = null) {
-        binding.profilePictureView.load(recipient)
+        binding.profilePictureView.update(recipient)
         binding.conversationTitleView.text = recipient.takeUnless { it.isLocalNumber }?.toShortString() ?: context.getString(R.string.note_to_self)
         updateSubtitle(recipient, openGroup, config)
 

app/src/main/java/org/thoughtcrime/securesms/conversation/start/newmessage/NewMessage.kt

@@ -48,7 +48,7 @@ import org.thoughtcrime.securesms.ui.LoadingArcOr
 import org.thoughtcrime.securesms.ui.components.AppBarCloseIcon
 import org.thoughtcrime.securesms.ui.components.BackAppBar
 import org.thoughtcrime.securesms.ui.components.BorderlessButtonWithIcon
-import org.thoughtcrime.securesms.ui.components.MaybeScanQrCode
+import org.thoughtcrime.securesms.ui.components.QRScannerScreen
 import org.thoughtcrime.securesms.ui.components.PrimaryOutlineButton
 import org.thoughtcrime.securesms.ui.components.SessionOutlinedTextField
 import org.thoughtcrime.securesms.ui.components.SessionTabRow
@@ -89,7 +89,7 @@ internal fun NewMessage(
         HorizontalPager(pagerState) {
             when (TITLES[it]) {
                 R.string.enter_account_id -> EnterAccountId(state, callbacks, onHelp)
-                R.string.qrScan -> MaybeScanQrCode(qrErrors, onScan = callbacks::onScanQrCode)
+                R.string.qrScan -> QRScannerScreen(qrErrors, onScan = callbacks::onScanQrCode)
             }
         }
     }

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationAdapter.kt

@@ -27,7 +27,6 @@ import org.thoughtcrime.securesms.database.CursorRecyclerViewAdapter
 import org.thoughtcrime.securesms.database.model.MessageRecord
 import org.thoughtcrime.securesms.dependencies.DatabaseComponent
 import com.bumptech.glide.RequestManager
-import org.thoughtcrime.securesms.database.getLong
 import org.thoughtcrime.securesms.preferences.PrivacySettingsActivity
 import org.thoughtcrime.securesms.showSessionDialog
 import java.util.concurrent.atomic.AtomicLong

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/components/MentionCandidateSelectionView.kt

@@ -0,0 +1,87 @@
+package org.thoughtcrime.securesms.conversation.v2.components
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.BaseAdapter
+import android.widget.ListView
+import org.session.libsession.messaging.mentions.Mention
+import org.thoughtcrime.securesms.dependencies.DatabaseComponent
+import com.bumptech.glide.RequestManager
+import org.thoughtcrime.securesms.util.toPx
+
+class MentionCandidateSelectionView(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : ListView(context, attrs, defStyleAttr) {
+    private var mentionCandidates = listOf<Mention>()
+        set(newValue) { field = newValue; mentionCandidateSelectionViewAdapter.mentionCandidates = newValue }
+    var glide: RequestManager? = null
+        set(newValue) { field = newValue; mentionCandidateSelectionViewAdapter.glide = newValue }
+    var openGroupServer: String? = null
+        set(newValue) { field = newValue; mentionCandidateSelectionViewAdapter.openGroupServer = openGroupServer }
+    var openGroupRoom: String? = null
+        set(newValue) { field = newValue; mentionCandidateSelectionViewAdapter.openGroupRoom = openGroupRoom }
+    var onMentionCandidateSelected: ((Mention) -> Unit)? = null
+
+    private val mentionCandidateSelectionViewAdapter by lazy { Adapter(context) }
+
+    private class Adapter(private val context: Context) : BaseAdapter() {
+        var mentionCandidates = listOf<Mention>()
+            set(newValue) { field = newValue; notifyDataSetChanged() }
+        var glide: RequestManager? = null
+        var openGroupServer: String? = null
+        var openGroupRoom: String? = null
+
+        override fun getCount(): Int {
+            return mentionCandidates.count()
+        }
+
+        override fun getItemId(position: Int): Long {
+            return position.toLong()
+        }
+
+        override fun getItem(position: Int): Mention {
+            return mentionCandidates[position]
+        }
+
+        override fun getView(position: Int, cellToBeReused: View?, parent: ViewGroup): View {
+            val cell = cellToBeReused as MentionCandidateView? ?: MentionCandidateView(context)
+            val mentionCandidate = getItem(position)
+            cell.glide = glide
+            cell.mentionCandidate = mentionCandidate
+            cell.openGroupServer = openGroupServer
+            cell.openGroupRoom = openGroupRoom
+            return cell
+        }
+    }
+
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context) : this(context, null)
+
+    init {
+        clipToOutline = true
+        adapter = mentionCandidateSelectionViewAdapter
+        mentionCandidateSelectionViewAdapter.mentionCandidates = mentionCandidates
+        setOnItemClickListener { _, _, position, _ ->
+            onMentionCandidateSelected?.invoke(mentionCandidates[position])
+        }
+    }
+
+    fun show(mentionCandidates: List<Mention>, threadID: Long) {
+        val openGroup = DatabaseComponent.get(context).lokiThreadDatabase().getOpenGroupChat(threadID)
+        if (openGroup != null) {
+            openGroupServer = openGroup.server
+            openGroupRoom = openGroup.room
+        }
+        this.mentionCandidates = mentionCandidates
+        val layoutParams = this.layoutParams as ViewGroup.LayoutParams
+        layoutParams.height = toPx(Math.min(mentionCandidates.count(), 4) * 44, resources)
+        this.layoutParams = layoutParams
+    }
+
+    fun hide() {
+        val layoutParams = this.layoutParams as ViewGroup.LayoutParams
+        layoutParams.height = 0
+        this.layoutParams = layoutParams
+    }
+}

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/components/MentionCandidateView.kt

@@ -0,0 +1,42 @@
+package org.thoughtcrime.securesms.conversation.v2.components
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import android.widget.LinearLayout
+import network.loki.messenger.databinding.ViewMentionCandidateBinding
+import org.session.libsession.messaging.mentions.Mention
+import org.thoughtcrime.securesms.groups.OpenGroupManager
+import com.bumptech.glide.RequestManager
+
+class MentionCandidateView : LinearLayout {
+    private lateinit var binding: ViewMentionCandidateBinding
+    var mentionCandidate = Mention("", "")
+        set(newValue) { field = newValue; update() }
+    var glide: RequestManager? = null
+    var openGroupServer: String? = null
+    var openGroupRoom: String? = null
+
+    constructor(context: Context) : this(context, null)
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) { initialize() }
+
+    private fun initialize() {
+        binding = ViewMentionCandidateBinding.inflate(LayoutInflater.from(context), this, true)
+    }
+
+    private fun update() = with(binding) {
+        mentionCandidateNameTextView.text = mentionCandidate.displayName
+        profilePictureView.publicKey = mentionCandidate.publicKey
+        profilePictureView.displayName = mentionCandidate.displayName
+        profilePictureView.additionalPublicKey = null
+        profilePictureView.update()
+        if (openGroupServer != null && openGroupRoom != null) {
+            val isUserModerator = OpenGroupManager.isUserModerator(context, "$openGroupRoom.$openGroupServer", mentionCandidate.publicKey)
+            moderatorIconImageView.visibility = if (isUserModerator) View.VISIBLE else View.GONE
+        } else {
+            moderatorIconImageView.visibility = View.GONE
+        }
+    }
+}

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/input_bar/mentions/MentionCandidateView.kt

@@ -2,11 +2,13 @@ package org.thoughtcrime.securesms.conversation.v2.input_bar.mentions
 
 import android.view.View
 import network.loki.messenger.databinding.ViewMentionCandidateV2Binding
-import org.session.libsession.utilities.Address
 import org.thoughtcrime.securesms.conversation.v2.mention.MentionViewModel
 
 fun ViewMentionCandidateV2Binding.update(candidate: MentionViewModel.Candidate) {
     mentionCandidateNameTextView.text = candidate.nameHighlighted
-    profilePictureView.load(Address.fromSerialized(candidate.member.publicKey))
+    profilePictureView.publicKey = candidate.member.publicKey
+    profilePictureView.displayName = candidate.member.name
+    profilePictureView.additionalPublicKey = null
+    profilePictureView.update()
     moderatorIconImageView.visibility = if (candidate.member.isModerator) View.VISIBLE else View.GONE
 }

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/messages/VisibleMessageView.kt

@@ -16,6 +16,7 @@ import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
+import android.widget.LinearLayout
 import androidx.annotation.ColorInt
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
@@ -25,8 +26,6 @@ import androidx.core.content.ContextCompat
 import androidx.core.os.bundleOf
 import androidx.core.view.isVisible
 import androidx.core.view.marginBottom
-import com.bumptech.glide.Glide
-import com.bumptech.glide.RequestManager
 import dagger.hilt.android.AndroidEntryPoint
 import network.loki.messenger.R
 import network.loki.messenger.databinding.ViewEmojiReactionsBinding
@@ -53,6 +52,8 @@ import org.thoughtcrime.securesms.database.ThreadDatabase
 import org.thoughtcrime.securesms.database.model.MessageRecord
 import org.thoughtcrime.securesms.groups.OpenGroupManager
 import org.thoughtcrime.securesms.home.UserDetailsBottomSheet
+import com.bumptech.glide.Glide
+import com.bumptech.glide.RequestManager
 import org.thoughtcrime.securesms.util.DateUtils
 import org.thoughtcrime.securesms.util.disableClipping
 import org.thoughtcrime.securesms.util.toDp
@@ -178,7 +179,8 @@ class VisibleMessageView : FrameLayout {
 
         if (isGroupThread && !message.isOutgoing) {
             if (isEndOfMessageCluster) {
-                binding.profilePictureView.load(message.individualRecipient)
+                binding.profilePictureView.publicKey = senderAccountID
+                binding.profilePictureView.update(message.individualRecipient)
                 binding.profilePictureView.setOnClickListener {
                     if (thread.isCommunityRecipient) {
                         val openGroup = lokiThreadDb.getOpenGroupChat(threadID)
@@ -454,6 +456,7 @@ class VisibleMessageView : FrameLayout {
     }
 
     fun recycle() {
+        binding.profilePictureView.recycle()
         binding.messageContentView.root.recycle()
     }
 

app/src/main/java/org/thoughtcrime/securesms/glide/ContactPhotoFetcher.java

@@ -13,14 +13,14 @@ import org.session.libsession.avatars.ContactPhoto;
 import java.io.IOException;
 import java.io.InputStream;
 
-public class ContactPhotoFetcher implements DataFetcher<InputStream> {
+class ContactPhotoFetcher implements DataFetcher<InputStream> {
 
   private final Context   context;
   private final ContactPhoto contactPhoto;
 
   private InputStream inputStream;
 
-  public ContactPhotoFetcher(@NonNull Context context, @NonNull ContactPhoto contactPhoto) {
+  ContactPhotoFetcher(@NonNull Context context, @NonNull ContactPhoto contactPhoto) {
     this.context      = context.getApplicationContext();
     this.contactPhoto = contactPhoto;
   }

app/src/main/java/org/thoughtcrime/securesms/glide/PlaceholderAvatarFetcher.kt

@@ -9,15 +9,12 @@ import org.session.libsession.avatars.PlaceholderAvatarPhoto
 import org.session.libsignal.utilities.Log
 import org.thoughtcrime.securesms.util.AvatarPlaceholderGenerator
 
-class PlaceholderAvatarFetcher(
+class PlaceholderAvatarFetcher(private val context: Context,
-    private val context: Context,
+                               private val photo: PlaceholderAvatarPhoto): DataFetcher<BitmapDrawable> {
-    private val hashString: String,
-    private val displayName: String
-): DataFetcher<BitmapDrawable> {
 
     override fun loadData(priority: Priority,callback: DataFetcher.DataCallback<in BitmapDrawable>) {
         try {
-            val avatar = AvatarPlaceholderGenerator.generate(context, 128, hashString, displayName)
+            val avatar = AvatarPlaceholderGenerator.generate(context, 128, photo.hashString, photo.displayName)
             callback.onDataReady(avatar)
         } catch (e: Exception) {
             Log.e("Loki", "Error in fetching avatar")

app/src/main/java/org/thoughtcrime/securesms/glide/PlaceholderAvatarLoader.kt

@@ -8,9 +8,6 @@ import com.bumptech.glide.load.model.ModelLoader.LoadData
 import com.bumptech.glide.load.model.ModelLoaderFactory
 import com.bumptech.glide.load.model.MultiModelLoaderFactory
 import org.session.libsession.avatars.PlaceholderAvatarPhoto
-import org.session.libsession.utilities.Address
-import org.session.libsession.utilities.TextSecurePreferences
-import org.session.libsession.utilities.recipients.Recipient
 
 class PlaceholderAvatarLoader(private val appContext: Context): ModelLoader<PlaceholderAvatarPhoto, BitmapDrawable> {
 
@@ -20,15 +17,7 @@ class PlaceholderAvatarLoader(private val appContext: Context): ModelLoader<Plac
         height: Int,
         options: Options
     ): LoadData<BitmapDrawable> {
-        val displayName: String = when {
+        return LoadData(model, PlaceholderAvatarFetcher(appContext, model))
-            !model.displayName.isNullOrBlank() -> model.displayName.orEmpty()
-            model.hashString == TextSecurePreferences.getLocalNumber(appContext) -> TextSecurePreferences.getProfileName(appContext).orEmpty()
-            else -> Recipient.from(appContext, Address.fromSerialized(model.hashString), false).let {
-                it.profileName ?: it.name ?: ""
-            }
-        }
-
-        return LoadData(model, PlaceholderAvatarFetcher(appContext, model.hashString, displayName))
     }
 
     override fun handles(model: PlaceholderAvatarPhoto): Boolean = true

app/src/main/java/org/thoughtcrime/securesms/home/ConversationView.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import android.content.res.Resources
 import android.graphics.Typeface
 import android.graphics.drawable.ColorDrawable
+import android.text.TextUtils
 import android.util.AttributeSet
 import android.util.TypedValue
 import android.view.View
@@ -127,10 +128,11 @@ class ConversationView : LinearLayout {
             thread.isRead -> binding.statusIndicatorImageView.setImageResource(R.drawable.ic_filled_circle_check)
             else -> binding.statusIndicatorImageView.setImageResource(R.drawable.ic_circle_check)
         }
-        binding.profilePictureView.load(thread.recipient)
+        binding.profilePictureView.update(thread.recipient)
     }
 
     fun recycle() {
+        binding.profilePictureView.recycle()
     }
 
     private fun getTitle(recipient: Recipient): String? = when {

app/src/main/java/org/thoughtcrime/securesms/home/HomeActivity.kt

@@ -347,7 +347,8 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
         ApplicationContext.getInstance(this).messageNotifier.setHomeScreenVisible(true)
         if (textSecurePreferences.getLocalNumber() == null) { return; } // This can be the case after a secondary device is auto-cleared
         IdentityKeyUtil.checkUpdate(this)
-        binding.profileButton.load(Address.fromSerialized(publicKey))
+        binding.profileButton.recycle() // clear cached image before update tje profilePictureView
+        binding.profileButton.update()
         if (textSecurePreferences.getHasViewedSeed()) {
             binding.seedReminderView.isVisible = false
         }
@@ -387,7 +388,10 @@ class HomeActivity : PassphraseRequiredActionBarActivity(),
     }
 
     private fun updateProfileButton() {
-        binding.profileButton.load(Address.fromSerialized(publicKey))
+        binding.profileButton.publicKey = publicKey
+        binding.profileButton.displayName = textSecurePreferences.getProfileName()
+        binding.profileButton.recycle()
+        binding.profileButton.update()
     }
     // endregion
 

app/src/main/java/org/thoughtcrime/securesms/home/UserDetailsBottomSheet.kt

@@ -55,7 +55,8 @@ class UserDetailsBottomSheet: BottomSheetDialogFragment() {
         val recipient = Recipient.from(requireContext(), Address.fromSerialized(publicKey), false)
         val threadRecipient = threadDb.getRecipientForThreadId(threadID) ?: return dismiss()
         with(binding) {
-            profilePictureView.load(recipient)
+            profilePictureView.publicKey = publicKey
+            profilePictureView.update(recipient)
             nameTextViewContainer.visibility = View.VISIBLE
             nameTextViewContainer.setOnClickListener {
                 if (recipient.isOpenGroupInboxRecipient || recipient.isOpenGroupOutboxRecipient) return@setOnClickListener

app/src/main/java/org/thoughtcrime/securesms/home/search/GlobalSearchAdapter.kt

@@ -11,6 +11,7 @@ import network.loki.messenger.databinding.ViewGlobalSearchHeaderBinding
 import network.loki.messenger.databinding.ViewGlobalSearchResultBinding
 import network.loki.messenger.databinding.ViewGlobalSearchSubheaderBinding
 import org.session.libsession.utilities.GroupRecord
+import org.session.libsession.utilities.recipients.Recipient
 import org.thoughtcrime.securesms.search.model.MessageResult
 import org.thoughtcrime.securesms.ui.GetString
 import java.security.InvalidParameterException
@@ -98,6 +99,12 @@ class GlobalSearchAdapter(private val modelCallback: (Model)->Unit): RecyclerVie
         }
     }
 
+    override fun onViewRecycled(holder: RecyclerView.ViewHolder) {
+        if (holder is ContentView) {
+            holder.binding.searchResultProfilePicture.recycle()
+        }
+    }
+
     class ContentView(view: View, private val modelCallback: (Model) -> Unit) : RecyclerView.ViewHolder(view) {
 
         val binding = ViewGlobalSearchResultBinding.bind(view)
@@ -107,6 +114,7 @@ class GlobalSearchAdapter(private val modelCallback: (Model)->Unit): RecyclerVie
         }
 
         fun bind(query: String, model: Model) {
+            binding.searchResultProfilePicture.recycle()
             when (model) {
                 is Model.GroupConversation -> bindModel(query, model)
                 is Model.Contact -> bindModel(query, model)

app/src/main/java/org/thoughtcrime/securesms/home/search/GlobalSearchAdapterUtils.kt

@@ -93,7 +93,7 @@ fun ContentView.bindModel(query: String?, model: GroupConversation) {
     binding.searchResultSubtitle.isVisible = model.groupRecord.isClosedGroup
     binding.searchResultTimestamp.isVisible = false
     val threadRecipient = Recipient.from(binding.root.context, Address.fromSerialized(model.groupRecord.encodedId), false)
-    binding.searchResultProfilePicture.load(threadRecipient)
+    binding.searchResultProfilePicture.update(threadRecipient)
     val nameString = model.groupRecord.title
     binding.searchResultTitle.text = getHighlight(query, nameString)
 
@@ -111,7 +111,7 @@ fun ContentView.bindModel(query: String?, model: ContactModel) = binding.run {
     searchResultTimestamp.isVisible = false
     searchResultSubtitle.text = null
     val recipient = Recipient.from(root.context, Address.fromSerialized(model.contact.accountID), false)
-    searchResultProfilePicture.load(recipient)
+    searchResultProfilePicture.update(recipient)
     val nameString = if (model.isSelf) root.context.getString(R.string.note_to_self)
         else model.contact.getSearchName()
     searchResultTitle.text = getHighlight(query, nameString)
@@ -121,7 +121,7 @@ fun ContentView.bindModel(model: SavedMessages) {
     binding.searchResultSubtitle.isVisible = false
     binding.searchResultTimestamp.isVisible = false
     binding.searchResultTitle.setText(R.string.note_to_self)
-    binding.searchResultProfilePicture.load(Address.fromSerialized(model.currentUserPublicKey))
+    binding.searchResultProfilePicture.update(Address.fromSerialized(model.currentUserPublicKey))
     binding.searchResultProfilePicture.isVisible = true
 }
 
@@ -134,7 +134,7 @@ fun ContentView.bindModel(query: String?, model: Message) = binding.apply {
 //        unreadCountTextView.text = model.unread.toString()
 //    }
     searchResultTimestamp.text = DateUtils.getDisplayFormattedTimeSpanString(root.context, Locale.getDefault(), model.messageResult.sentTimestampMs)
-    searchResultProfilePicture.load(model.messageResult.conversationRecipient)
+    searchResultProfilePicture.update(model.messageResult.conversationRecipient)
     val textSpannable = SpannableStringBuilder()
     if (model.messageResult.conversationRecipient != model.messageResult.messageRecipient) {
         // group chat, bind

app/src/main/java/org/thoughtcrime/securesms/media/MediaOverviewScreen.kt

@@ -144,6 +144,7 @@ fun MediaOverviewScreen(
                 onSaveClicked = { showingSaveAttachmentWarning = true },
                 onDeleteClicked = { showingDeleteConfirmation = true },
                 onSelectAllClicked = viewModel::onSelectAllClicked,
+                numSelected = selectedItems.size,
                 appBarScrollBehavior = appBarScrollBehavior
             )
         }

app/src/main/java/org/thoughtcrime/securesms/media/MediaOverviewTopAppBar.kt

@@ -16,6 +16,7 @@ import org.thoughtcrime.securesms.ui.theme.LocalColors
 @OptIn(ExperimentalMaterial3Api::class)
 fun MediaOverviewTopAppBar(
     selectionMode: Boolean,
+    numSelected: Int,
     title: String,
     onBackClicked: () -> Unit,
     onSaveClicked: () -> Unit,
@@ -25,7 +26,8 @@ fun MediaOverviewTopAppBar(
 ) {
     ActionAppBar(
         title = title,
-        navigationIcon = {AppBarBackIcon(onBack = onBackClicked)},
+        actionModeTitle = numSelected.toString(),
+        navigationIcon = { AppBarBackIcon(onBack = onBackClicked) },
         scrollBehavior = appBarScrollBehavior,
         actionMode = selectionMode,
         actionModeActions = {

app/src/main/java/org/thoughtcrime/securesms/messagerequests/MessageRequestView.kt

@@ -49,11 +49,12 @@ class MessageRequestView : LinearLayout {
         binding.snippetTextView.text = snippet
 
         post {
-            binding.profilePictureView.load(thread.recipient)
+            binding.profilePictureView.update(thread.recipient)
         }
     }
 
     fun recycle() {
+        binding.profilePictureView.recycle()
     }
 
     private fun getUserDisplayName(recipient: Recipient): String? {

app/src/main/java/org/thoughtcrime/securesms/mms/SignalGlideModule.java

@@ -56,7 +56,6 @@ public class SignalGlideModule extends AppGlideModule {
 //    builder.setDiskCache(new NoopDiskCacheFactory());
   }
 
-  /** @noinspection unchecked*/
   @Override
   public void registerComponents(@NonNull Context context, @NonNull Glide glide, @NonNull Registry registry) {
     AttachmentSecret attachmentSecret = AttachmentSecretProvider.getInstance(context).getOrCreateAttachmentSecret();
@@ -75,7 +74,6 @@ public class SignalGlideModule extends AppGlideModule {
     registry.append(AttachmentModel.class, InputStream.class, new AttachmentStreamUriLoader.Factory());
     registry.append(ChunkedImageUrl.class, InputStream.class, new ChunkedImageUrlLoader.Factory());
     registry.append(PlaceholderAvatarPhoto.class, BitmapDrawable.class, new PlaceholderAvatarLoader.Factory(context));
-
     registry.replace(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory());
   }
 

app/src/main/java/org/thoughtcrime/securesms/onboarding/loadaccount/LoadAccount.kt

@@ -26,7 +26,7 @@ import network.loki.messenger.R
 import org.thoughtcrime.securesms.onboarding.ui.ContinuePrimaryOutlineButton
 import org.thoughtcrime.securesms.ui.theme.LocalDimensions
 import org.thoughtcrime.securesms.ui.theme.PreviewTheme
-import org.thoughtcrime.securesms.ui.components.MaybeScanQrCode
+import org.thoughtcrime.securesms.ui.components.QRScannerScreen
 import org.thoughtcrime.securesms.ui.components.SessionOutlinedTextField
 import org.thoughtcrime.securesms.ui.components.SessionTabRow
 import org.thoughtcrime.securesms.ui.theme.LocalType
@@ -52,7 +52,7 @@ internal fun LoadAccountScreen(
         ) { page ->
             when (TITLES[page]) {
                 R.string.sessionRecoveryPassword -> RecoveryPassword(state, onChange, onContinue)
-                R.string.qrScan -> MaybeScanQrCode(qrErrors, onScan = onScan)
+                R.string.qrScan -> QRScannerScreen(qrErrors, onScan = onScan)
             }
         }
     }

app/src/main/java/org/thoughtcrime/securesms/onboarding/loadaccount/LoadAccountActivity.kt

@@ -6,6 +6,7 @@ import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.lifecycle.lifecycleScope
 import dagger.hilt.android.AndroidEntryPoint
+import javax.inject.Inject
 import kotlinx.coroutines.launch
 import network.loki.messenger.R
 import org.session.libsession.utilities.TextSecurePreferences
@@ -14,7 +15,6 @@ import org.thoughtcrime.securesms.onboarding.manager.LoadAccountManager
 import org.thoughtcrime.securesms.onboarding.messagenotifications.MessageNotificationsActivity
 import org.thoughtcrime.securesms.ui.setComposeContent
 import org.thoughtcrime.securesms.util.start
-import javax.inject.Inject
 
 @AndroidEntryPoint
 class LoadAccountActivity : BaseActionBarActivity() {

app/src/main/java/org/thoughtcrime/securesms/onboarding/loadaccount/LoadAccountViewModel.kt

@@ -4,6 +4,7 @@ import android.app.Application
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
+import javax.inject.Inject
 import kotlinx.coroutines.channels.BufferOverflow
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -17,7 +18,6 @@ import org.session.libsignal.crypto.MnemonicCodec
 import org.session.libsignal.crypto.MnemonicCodec.DecodingError.InputTooShort
 import org.session.libsignal.crypto.MnemonicCodec.DecodingError.InvalidWord
 import org.thoughtcrime.securesms.crypto.MnemonicUtilities
-import javax.inject.Inject
 
 class LoadAccountEvent(val mnemonic: ByteArray)
 
@@ -54,6 +54,7 @@ internal class LoadAccountViewModel @Inject constructor(
     }
 
     fun onScanQrCode(string: String) {
+
         viewModelScope.launch {
             try {
                 codec.decodeMnemonicOrHexAsByteArray(string).let(::onSuccess)

app/src/main/java/org/thoughtcrime/securesms/preferences/BlockedContactsAdapter.kt

@@ -36,6 +36,11 @@ class BlockedContactsAdapter(val viewModel: BlockedContactsViewModel) : ListAdap
         else holder.select(getItem(position).isSelected)
     }
 
+    override fun onViewRecycled(holder: ViewHolder) {
+        super.onViewRecycled(holder)
+        holder.binding.profilePictureView.recycle()
+    }
+
     class ViewHolder(itemView: View): RecyclerView.ViewHolder(itemView) {
 
         val glide = Glide.with(itemView)
@@ -43,7 +48,9 @@ class BlockedContactsAdapter(val viewModel: BlockedContactsViewModel) : ListAdap
 
         fun bind(selectable: SelectableRecipient, toggle: (SelectableRecipient) -> Unit) {
             binding.recipientName.text = selectable.item.name
-            binding.profilePictureView.load(selectable.item)
+            with (binding.profilePictureView) {
+                update(selectable.item)
+            }
             binding.root.setOnClickListener { toggle(selectable) }
             binding.selectButton.isSelected = selectable.isSelected
         }

app/src/main/java/org/thoughtcrime/securesms/preferences/QRCodeActivity.kt

@@ -27,7 +27,7 @@ import org.thoughtcrime.securesms.conversation.v2.ConversationActivityV2
 import org.thoughtcrime.securesms.database.threadDatabase
 import org.thoughtcrime.securesms.ui.theme.LocalDimensions
 import org.thoughtcrime.securesms.ui.theme.LocalColors
-import org.thoughtcrime.securesms.ui.components.MaybeScanQrCode
+import org.thoughtcrime.securesms.ui.components.QRScannerScreen
 import org.thoughtcrime.securesms.ui.components.QrImage
 import org.thoughtcrime.securesms.ui.components.SessionTabRow
 import org.thoughtcrime.securesms.ui.contentDescription
@@ -54,7 +54,7 @@ class QRCodeActivity : PassphraseRequiredActionBarActivity() {
         }
     }
 
-    fun onScan(string: String) {
+    private fun onScan(string: String) {
         if (!PublicKeyValidation.isValid(string)) {
             errors.tryEmit(getString(R.string.this_qr_code_does_not_contain_an_account_id))
         } else if (!isFinishing) {
@@ -83,7 +83,7 @@ private fun Tabs(accountId: String, errors: Flow<String>, onScan: (String) -> Un
         ) { page ->
             when (TITLES[page]) {
                 R.string.view -> QrPage(accountId)
-                R.string.scan -> MaybeScanQrCode(errors, onScan = onScan)
+                R.string.scan -> QRScannerScreen(errors, onScan = onScan)
             }
         }
     }

app/src/main/java/org/thoughtcrime/securesms/preferences/SettingsActivity.kt

@@ -168,7 +168,7 @@ class SettingsActivity : PassphraseRequiredActionBarActivity() {
         super.onStart()
 
         binding.run {
-            loadProfilePicture(profilePictureView)
+            setupProfilePictureView(profilePictureView)
             profilePictureView.setOnClickListener { showEditProfilePictureUI() }
             ctnGroupNameSection.setOnClickListener { startActionMode(DisplayNameEditActionModeCallback()) }
             btnGroupNameDisplay.text = getDisplayName()
@@ -185,9 +185,12 @@ class SettingsActivity : PassphraseRequiredActionBarActivity() {
     private fun getDisplayName(): String =
         TextSecurePreferences.getProfileName(this) ?: truncateIdForDisplay(hexEncodedPublicKey)
 
-    private fun loadProfilePicture(view: ProfilePictureView) {
+    private fun setupProfilePictureView(view: ProfilePictureView) {
-        // Always reload the profile picture as it can change on this page.
+        view.apply {
-        view.load(Address.fromSerialized(hexEncodedPublicKey))
+            publicKey = hexEncodedPublicKey
+            displayName = getDisplayName()
+            update()
+        }
     }
 
     override fun onSaveInstanceState(outState: Bundle) {
@@ -328,7 +331,9 @@ class SettingsActivity : PassphraseRequiredActionBarActivity() {
 
             ConfigurationMessageUtilities.forceSyncConfigurationNowIfNeeded(this@SettingsActivity)
 
-            loadProfilePicture(binding.profilePictureView)
+            // Update our visuals
+            binding.profilePictureView.recycle()
+            binding.profilePictureView.update()
         }
 
         // If the sync failed then inform the user
@@ -403,7 +408,7 @@ class SettingsActivity : PassphraseRequiredActionBarActivity() {
             cancelButton()
         }.apply {
             val profilePic = findViewById<ProfilePictureView>(R.id.profile_picture_view)
-                ?.also(::loadProfilePicture)
+                ?.also(::setupProfilePictureView)
 
             val pictureIcon = findViewById<View>(R.id.ic_pictures)
 

app/src/main/java/org/thoughtcrime/securesms/reactions/ReactionRecipientsAdapter.java

@@ -13,6 +13,7 @@ import org.session.libsession.messaging.utilities.AccountId;
 import org.thoughtcrime.securesms.components.ProfilePictureView;
 import org.thoughtcrime.securesms.components.emoji.EmojiImageView;
 import org.thoughtcrime.securesms.database.model.MessageId;
+import com.bumptech.glide.Glide;
 
 import java.util.Collections;
 import java.util.List;
@@ -153,7 +154,7 @@ final class ReactionRecipientsAdapter extends RecyclerView.Adapter<ReactionRecip
         callback.onRemoveReaction(reaction.getBaseEmoji(), messageId, reaction.getTimestamp());
       });
 
-      this.avatar.load(reaction.getSender());
+      this.avatar.update(reaction.getSender());
 
       if (reaction.getSender().isLocalNumber()) {
         this.recipient.setText(R.string.ReactionsRecipientAdapter_you);
@@ -169,6 +170,7 @@ final class ReactionRecipientsAdapter extends RecyclerView.Adapter<ReactionRecip
     }
 
     void unbind() {
+      avatar.recycle();
     }
 
   }

app/src/main/java/org/thoughtcrime/securesms/ui/Components.kt

@@ -11,6 +11,7 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.BoxScope
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ColumnScope
 import androidx.compose.foundation.layout.RowScope
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -360,7 +361,7 @@ fun RowScope.Avatar(recipient: Recipient) {
     ) {
         AndroidView(
             factory = {
-                ProfilePictureView(it).apply { load(recipient) }
+                ProfilePictureView(it).apply { update(recipient) }
             },
             modifier = Modifier
                 .width(46.dp)

app/src/main/java/org/thoughtcrime/securesms/ui/components/AppBar.kt

@@ -2,26 +2,27 @@ package org.thoughtcrime.securesms.ui.components
 
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.RowScope
 import androidx.compose.material3.CenterAlignedTopAppBar
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.Text
-import androidx.compose.material3.TopAppBarColors
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.TopAppBarScrollBehavior
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.tooling.preview.PreviewParameter
-import androidx.compose.ui.unit.dp
 import network.loki.messenger.R
 import org.thoughtcrime.securesms.ui.Divider
 import org.thoughtcrime.securesms.ui.theme.LocalColors
+import org.thoughtcrime.securesms.ui.theme.LocalDimensions
 import org.thoughtcrime.securesms.ui.theme.LocalType
 import org.thoughtcrime.securesms.ui.theme.PreviewTheme
 import org.thoughtcrime.securesms.ui.theme.SessionColorsParameterProvider
@@ -37,7 +38,10 @@ fun AppBarPreview(
         Column() {
             BasicAppBar(title = "Basic App Bar")
             Divider()
-            BasicAppBar(title = "Basic App Bar With Color", backgroundColor = LocalColors.current.backgroundSecondary)
+            BasicAppBar(
+                title = "Basic App Bar With Color",
+                backgroundColor = LocalColors.current.backgroundSecondary
+            )
             Divider()
             BackAppBar(title = "Back Bar", onBack = {})
             Divider()
@@ -69,7 +73,7 @@ fun BasicAppBar(
     backgroundColor: Color = LocalColors.current.background,
     navigationIcon: @Composable () -> Unit = {},
     actions: @Composable RowScope.() -> Unit = {},
-){
+) {
     CenterAlignedTopAppBar(
         modifier = modifier,
         title = {
@@ -94,7 +98,7 @@ fun BackAppBar(
     scrollBehavior: TopAppBarScrollBehavior? = null,
     backgroundColor: Color = LocalColors.current.background,
     actions: @Composable RowScope.() -> Unit = {},
-){
+) {
     BasicAppBar(
         modifier = modifier,
         title = title,
@@ -115,6 +119,7 @@ fun ActionAppBar(
     scrollBehavior: TopAppBarScrollBehavior? = null,
     backgroundColor: Color = LocalColors.current.background,
     actionMode: Boolean = false,
+    actionModeTitle: String = "",
     navigationIcon: @Composable () -> Unit = {},
     actions: @Composable RowScope.() -> Unit = {},
     actionModeActions: @Composable (RowScope.() -> Unit) = {},
@@ -126,7 +131,19 @@ fun ActionAppBar(
                 AppBarText(title = title)
             }
         },
-        navigationIcon =navigationIcon,
+        navigationIcon = {
+            if (actionMode) {
+                Row(
+                    horizontalArrangement = Arrangement.spacedBy(LocalDimensions.current.xxxsSpacing),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    navigationIcon()
+                    AppBarText(title = actionModeTitle)
+                }
+            } else {
+                navigationIcon()
+            }
+        },
         scrollBehavior = scrollBehavior,
         colors = appBarColors(backgroundColor),
         actions = {

app/src/main/java/org/thoughtcrime/securesms/ui/components/QR.kt

@@ -47,25 +47,27 @@ import com.google.accompanist.permissions.ExperimentalPermissionsApi
 import com.google.accompanist.permissions.isGranted
 import com.google.accompanist.permissions.rememberPermissionState
 import com.google.accompanist.permissions.shouldShowRationale
-import com.google.mlkit.vision.barcode.BarcodeScanner
+import com.google.zxing.BinaryBitmap
-import com.google.mlkit.vision.barcode.BarcodeScannerOptions
+import com.google.zxing.ChecksumException
-import com.google.mlkit.vision.barcode.BarcodeScanning
+import com.google.zxing.FormatException
-import com.google.mlkit.vision.barcode.common.Barcode
+import com.google.zxing.NotFoundException
-import com.google.mlkit.vision.common.InputImage
+import com.google.zxing.PlanarYUVLuminanceSource
+import com.google.zxing.Result
+import com.google.zxing.common.HybridBinarizer
+import com.google.zxing.qrcode.QRCodeReader
+import java.util.concurrent.Executors
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.launch
 import network.loki.messenger.R
 import org.session.libsignal.utilities.Log
-import org.thoughtcrime.securesms.ui.theme.LocalColors
 import org.thoughtcrime.securesms.ui.theme.LocalDimensions
 import org.thoughtcrime.securesms.ui.theme.LocalType
-import java.util.concurrent.Executors
 
 private const val TAG = "NewMessageFragment"
 
 @OptIn(ExperimentalPermissionsApi::class)
 @Composable
-fun MaybeScanQrCode(
+fun QRScannerScreen(
         errors: Flow<String>,
         onClickSettings: () -> Unit = LocalContext.current.run { {
             Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS).apply {
@@ -137,17 +139,13 @@ fun ScanQrCode(errors: Flow<String>, onScan: (String) -> Unit) {
     runCatching {
         cameraProvider.get().unbindAll()
 
-        val options = BarcodeScannerOptions.Builder()
-            .setBarcodeFormats(Barcode.FORMAT_QR_CODE)
-            .build()
-        val scanner = BarcodeScanning.getClient(options)
-
         cameraProvider.get().bindToLifecycle(
             LocalLifecycleOwner.current,
             selector,
             preview,
-            buildAnalysisUseCase(scanner, onScan)
+            buildAnalysisUseCase(QRCodeReader(), onScan)
         )
+
     }.onFailure { Log.e(TAG, "error binding camera", it) }
 
     DisposableEffect(cameraProvider) {
@@ -211,32 +209,51 @@ fun ScanQrCode(errors: Flow<String>, onScan: (String) -> Unit) {
 
 @SuppressLint("UnsafeOptInUsageError")
 private fun buildAnalysisUseCase(
-    scanner: BarcodeScanner,
+    scanner: QRCodeReader,
     onBarcodeScanned: (String) -> Unit
 ): ImageAnalysis = ImageAnalysis.Builder()
     .setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
     .build().apply {
-        setAnalyzer(Executors.newSingleThreadExecutor(), Analyzer(scanner, onBarcodeScanned))
+        setAnalyzer(Executors.newSingleThreadExecutor(), QRCodeAnalyzer(scanner, onBarcodeScanned))
     }
 
-class Analyzer(
+class QRCodeAnalyzer(
-    private val scanner: BarcodeScanner,
+    private val qrCodeReader: QRCodeReader,
     private val onBarcodeScanned: (String) -> Unit
 ): ImageAnalysis.Analyzer {
+
+    // Note: This analyze method is called once per frame of the camera feed.
     @SuppressLint("UnsafeOptInUsageError")
     override fun analyze(image: ImageProxy) {
-        InputImage.fromMediaImage(
+        // Grab the image data as a byte array so we can generate a PlanarYUVLuminanceSource from it
-            image.image!!,
+        val buffer = image.planes[0].buffer
-            image.imageInfo.rotationDegrees
+        buffer.rewind()
-        ).let(scanner::process).apply {
+        val imageBytes = ByteArray(buffer.capacity())
-            addOnSuccessListener { barcodes ->
+        buffer.get(imageBytes) // IMPORTANT: This transfers data from the buffer INTO the imageBytes array, although it looks like it would go the other way around!
-                barcodes.forEach {
+
-                    it.rawValue?.let(onBarcodeScanned)
+        // ZXing requires data as a BinaryBitmap to scan for QR codes, and to generate that we need to feed it a PlanarYUVLuminanceSource
+        val luminanceSource = PlanarYUVLuminanceSource(imageBytes, image.width, image.height, 0, 0, image.width, image.height, false)
+        val binaryBitmap = BinaryBitmap(HybridBinarizer(luminanceSource))
+
+        // Attempt to extract a QR code from the binary bitmap, and pass it through to our `onBarcodeScanned` method if we find one
+        try {
+            val result: Result = qrCodeReader.decode(binaryBitmap)
+            val resultTxt = result.text
+            // No need to close the image here - it'll always make it to the end, and calling `onBarcodeScanned`
+            // with a valid contact / recovery phrase / community code will stop calling this `analyze` method.
+            onBarcodeScanned(resultTxt)
         }
+        catch (nfe: NotFoundException) { /* Hits if there is no QR code in the image           */ }
+        catch (fe: FormatException)    { /* Hits if we found a QR code but failed to decode it */ }
+        catch (ce: ChecksumException)  { /* Hits if we found a QR code which is corrupted      */ }
+        catch (e: Exception) {
+            // Hits if there's a genuine problem
+            Log.e("QR", "error", e)
         }
-            addOnCompleteListener {
+
+        // Remember to close the image when we're done with it!
+        // IMPORTANT: It is CLOSING the image that allows this method to run again! If we don't
+        // close the image this method runs precisely ONCE and that's it, which is essentially useless.
         image.close()
     }
-        }
-    }
 }

app/src/main/java/org/thoughtcrime/securesms/util/QRCodeUtilities.kt

@@ -6,6 +6,7 @@ import com.google.zxing.BarcodeFormat
 import com.google.zxing.EncodeHintType
 import com.google.zxing.qrcode.QRCodeWriter
 import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel
+import org.session.libsignal.utilities.Log
 
 object QRCodeUtilities {
 
@@ -34,5 +35,8 @@ object QRCodeUtilities {
                 }
             }
         }
-    }.getOrNull()
+    }.getOrElse {
+        Log.e("QRCodeUtilities", "Failed to generate QR Code", it)
+        null
+    }
 }

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

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<org.thoughtcrime.securesms.conversation.v2.components.MentionCandidateView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="44dp"
+    android:orientation="horizontal"
+    android:paddingStart="@dimen/medium_spacing"
+    android:paddingEnd="@dimen/medium_spacing"
+    android:gravity="center_vertical"
+    android:background="@drawable/mention_candidate_view_background">
+
+    <RelativeLayout
+        android:layout_width="26dp"
+        android:layout_height="32dp">
+
+        <org.thoughtcrime.securesms.components.ProfilePictureView
+            android:id="@+id/profilePictureView"
+            android:layout_width="@dimen/very_small_profile_picture_size"
+            android:layout_height="@dimen/very_small_profile_picture_size"
+            android:layout_marginTop="3dp" />
+
+        <ImageView
+            android:id="@+id/moderatorIconImageView"
+            android:layout_width="16dp"
+            android:layout_height="16dp"
+            android:src="@drawable/ic_crown"
+            android:layout_alignParentEnd="true"
+            android:layout_alignParentBottom="true" />
+
+    </RelativeLayout>
+
+    <TextView
+        android:id="@+id/mentionCandidateNameTextView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/medium_spacing"
+        android:textSize="@dimen/small_font_size"
+        android:textColor="?android:textColorPrimary"
+        android:maxLines="1"
+        android:ellipsize="end" />
+
+</org.thoughtcrime.securesms.conversation.v2.components.MentionCandidateView>

gradle.properties

@@ -40,6 +40,7 @@ phraseVersion=1.2.0
 preferenceVersion=1.2.0
 protobufVersion=2.5.0
 testCoreVersion=1.5.0
+zxingVersion=3.5.3
 android.defaults.buildfeatures.buildconfig=true
 android.nonTransitiveRClass=false
 android.nonFinalResIds=false

libsession/src/main/java/org/session/libsession/avatars/PlaceholderAvatarPhoto.kt

@@ -3,12 +3,10 @@ package org.session.libsession.avatars
 import com.bumptech.glide.load.Key
 import java.security.MessageDigest
 
-data class PlaceholderAvatarPhoto(
+class PlaceholderAvatarPhoto(val hashString: String,
-    val hashString: String,
+                             val displayName: String): Key {
-    val displayName: String?
-) : Key {
     override fun updateDiskCacheKey(messageDigest: MessageDigest) {
         messageDigest.update(hashString.encodeToByteArray())
-        messageDigest.update(displayName?.encodeToByteArray() ?: byteArrayOf())
+        messageDigest.update(displayName.encodeToByteArray())
     }
 }