Implement user selection view

res/layout/cell_user_selection_view.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<org.thoughtcrime.securesms.loki.UserSelectionViewCell
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="52dp"
+    android:orientation="horizontal"
+    android:paddingStart="16dp"
+    android:paddingEnd="16dp"
+    android:gravity="center_vertical">
+
+    <RelativeLayout
+        android:layout_width="36dp"
+        android:layout_height="38dp"
+        android:layout_marginTop="1dp">
+
+        <!-- The frame layout below is a workaround for an avatar image view bug -->
+
+        <FrameLayout
+            android:id="@+id/profilePictureImageViewContainer"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" >
+
+            <org.thoughtcrime.securesms.components.AvatarImageView
+                android:id="@+id/profilePictureImageView"
+                android:layout_width="36dp"
+                android:layout_height="36dp"
+                android:layout_marginBottom="2dp" />
+
+        </FrameLayout>
+
+        <ImageView
+            android:id="@+id/moderatorIconImageView"
+            android:layout_width="16dp"
+            android:layout_height="16dp"
+            android:layout_marginEnd="1.5dp"
+            android:src="@drawable/icon_crown"
+            android:layout_alignParentEnd="true"
+            android:layout_alignParentBottom="true" />
+
+    </RelativeLayout>
+
+    <TextView
+        android:id="@+id/displayNameTextView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        style="@style/Signal.Text.Body"
+        android:ellipsize="end" />
+
+</org.thoughtcrime.securesms.loki.UserSelectionViewCell>

res/layout/conversation_activity.xml

@@ -71,17 +71,26 @@
                 android:inflatedId="@+id/attachment_editor"
                 android:layout="@layout/conversation_activity_attachment_editor_stub" />
 
-            <FrameLayout
+            <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:clipChildren="false"
+                android:orientation="vertical">
-                android:clipToPadding="false">
+
+                <include layout="@layout/view_user_selection" />
+
+                <FrameLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:clipChildren="false"
+                    android:clipToPadding="false">
+
+                    <include layout="@layout/conversation_input_panel" />
 
-                <include layout="@layout/conversation_input_panel" />
+                    <include layout="@layout/conversation_search_nav" />
 
-                <include layout="@layout/conversation_search_nav" />
+                </FrameLayout>
 
-            </FrameLayout>
+            </LinearLayout>
 
             <Button
                 android:id="@+id/register_button"

res/layout/conversation_input_panel.xml

@@ -101,6 +101,7 @@
                         tools:visibility="invisible"
                         tools:hint="Send TextSecure message" >
                         <requestFocus />
+
                     </org.thoughtcrime.securesms.components.ComposeText>
 
                     <FrameLayout

res/layout/view_user_selection.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<org.thoughtcrime.securesms.loki.UserSelectionView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/userSelectionView"
+    android:layout_width="match_parent"
+    android:layout_height="200dp"
+    android:paddingTop="6dp" />

src/org/thoughtcrime/securesms/components/AvatarImageView.java

@@ -19,6 +19,7 @@ import android.view.ViewOutlineProvider;
 import org.thoughtcrime.securesms.color.MaterialColor;
 import org.thoughtcrime.securesms.contacts.avatars.ContactColors;
 import org.thoughtcrime.securesms.contacts.avatars.GeneratedContactPhoto;
+import org.thoughtcrime.securesms.database.Address;
 import org.thoughtcrime.securesms.loki.JazzIdenticonDrawable;
 import org.thoughtcrime.securesms.mms.GlideRequests;
 import org.thoughtcrime.securesms.recipients.Recipient;
@@ -123,6 +124,10 @@ public class AvatarImageView extends AppCompatImageView {
     setImageDrawable(image);
   }
 
+  public void update(String hexEncodedPublicKey) {
+    this.recipient = Recipient.from(getContext(), Address.fromSerialized(hexEncodedPublicKey), false);
+  }
+
   public void setAvatar(@NonNull GlideRequests requestManager, @Nullable Recipient recipient, boolean quickContactEnabled) {
     this.recipient = recipient;
     /*

src/org/thoughtcrime/securesms/conversation/ConversationActivity.java

@@ -158,6 +158,8 @@ import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.loki.FriendRequestViewDelegate;
 import org.thoughtcrime.securesms.loki.LokiAPIUtilities;
 import org.thoughtcrime.securesms.loki.LokiThreadDatabaseDelegate;
+import org.thoughtcrime.securesms.loki.LokiUserDatabase;
+import org.thoughtcrime.securesms.loki.UserSelectionView;
 import org.thoughtcrime.securesms.mediasend.Media;
 import org.thoughtcrime.securesms.mediasend.MediaSendActivity;
 import org.thoughtcrime.securesms.mms.AttachmentManager;
@@ -225,6 +227,7 @@ import org.whispersystems.libsignal.util.guava.Optional;
 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
+import org.whispersystems.signalservice.loki.api.LokiAPI;
 import org.whispersystems.signalservice.loki.messaging.LokiMessageFriendRequestStatus;
 import org.whispersystems.signalservice.loki.messaging.LokiThreadFriendRequestStatus;
 import org.whispersystems.signalservice.loki.utilities.Analytics;
@@ -396,6 +399,10 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     });
 
     LokiAPIUtilities.INSTANCE.populateUserIDCacheIfNeeded(threadId, this);
+    UserSelectionView userSelectionView = findViewById(R.id.userSelectionView);
+    LokiUserDatabase userDatabase = DatabaseFactory.getLokiUserDatabase(this);
+    userSelectionView.setHasGroupContext(true);
+    userSelectionView.setUsers(LokiAPI.Companion.getUserIDs("", threadId, userDatabase));
 
     if (this.recipient.isGroupRecipient()) {
       if (this.recipient.getName().equals("Loki Public Chat")) {

src/org/thoughtcrime/securesms/conversation/ConversationItem.java

@@ -214,7 +214,7 @@ public class ConversationItem extends LinearLayout
     this.groupSenderProfileName  =            findViewById(R.id.group_message_sender_profile);
     this.alertView               =            findViewById(R.id.indicators_parent);
     this.contactPhoto            =            findViewById(R.id.contact_photo);
-    this.moderatorIconImageView      =            findViewById(R.id.moderator_icon_image_view);
+    this.moderatorIconImageView  =            findViewById(R.id.moderator_icon_image_view);
     this.contactPhotoHolder      =            findViewById(R.id.contact_photo_container);
     this.bodyBubble              =            findViewById(R.id.body_bubble);
     this.mediaThumbnailStub      = new Stub<>(findViewById(R.id.image_view_stub));

src/org/thoughtcrime/securesms/loki/UserSelectionView.kt

@@ -0,0 +1,52 @@
+package org.thoughtcrime.securesms.loki
+
+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 nl.komponents.kovenant.combine.Tuple2
+
+class UserSelectionView(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : ListView(context, attrs, defStyleAttr) {
+    var users = listOf<Tuple2<String, String>>()
+        set(newValue) { field = newValue; userSelectionViewAdapter.users = newValue }
+    var hasGroupContext = false
+
+    private val userSelectionViewAdapter by lazy { Adapter(context) }
+
+    private class Adapter(private val context: Context) : BaseAdapter() {
+        var users = listOf<Tuple2<String, String>>()
+            set(newValue) { field = newValue; notifyDataSetChanged() }
+        var hasGroupContext = false
+
+        override fun getCount(): Int {
+            return users.count()
+        }
+
+        override fun getItemId(position: Int): Long {
+            return position.toLong()
+        }
+
+        override fun getItem(position: Int): Tuple2<String, String> {
+            return users[position]
+        }
+
+        override fun getView(position: Int, cellToBeReused: View?, parent: ViewGroup): View {
+            val cell = cellToBeReused as UserSelectionViewCell? ?: UserSelectionViewCell.inflate(LayoutInflater.from(context), parent)
+            val user = getItem(position)
+            cell.user = user
+            cell.hasGroupContext = hasGroupContext
+            return cell
+        }
+    }
+
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context) : this(context, null)
+
+    init {
+        adapter = userSelectionViewAdapter
+        userSelectionViewAdapter.users = users
+    }
+}

src/org/thoughtcrime/securesms/loki/UserSelectionViewCell.kt

@@ -0,0 +1,48 @@
+package org.thoughtcrime.securesms.loki
+
+import android.content.Context
+import android.graphics.Outline
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.ViewOutlineProvider
+import android.widget.LinearLayout
+import kotlinx.android.synthetic.main.cell_user_selection_view.view.*
+import network.loki.messenger.R
+import nl.komponents.kovenant.combine.Tuple2
+import org.whispersystems.signalservice.loki.api.LokiGroupChatAPI
+
+class UserSelectionViewCell(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : LinearLayout(context, attrs, defStyleAttr) {
+    var user = Tuple2("", "")
+        set(newValue) { field = newValue; update() }
+    var hasGroupContext = false
+
+    constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
+    constructor(context: Context) : this(context, null)
+
+    companion object {
+
+        fun inflate(layoutInflater: LayoutInflater, parent: ViewGroup): UserSelectionViewCell {
+            return layoutInflater.inflate(R.layout.cell_user_selection_view, parent, false) as UserSelectionViewCell
+        }
+    }
+
+    override fun onFinishInflate() {
+        super.onFinishInflate()
+        profilePictureImageViewContainer.outlineProvider = object : ViewOutlineProvider() {
+
+            override fun getOutline(view: View, outline: Outline) {
+                outline.setOval(0, 0, view.width, view.height)
+            }
+        }
+        profilePictureImageViewContainer.clipToOutline = true
+    }
+
+    private fun update() {
+        displayNameTextView.text = user.second
+        profilePictureImageView.update(user.first)
+        val isUserModerator = LokiGroupChatAPI.isUserModerator(user.first, LokiGroupChatAPI.publicChatServerID, LokiGroupChatAPI.publicChatServer)
+        moderatorIconImageView.visibility = if (isUserModerator && hasGroupContext) View.VISIBLE else View.GONE
+    }
+}