add UI options for delete messages

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationActivityV2.kt

@@ -1167,6 +1167,7 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
     }
 
     override fun deleteMessages(messages: Set<MessageRecord>) {
+        if (thread.isOpenGroupRecipient) {
             val messageCount = messages.size
             val builder = AlertDialog.Builder(this)
             builder.setTitle(resources.getQuantityString(R.plurals.ConversationFragment_delete_selected_messages, messageCount, messageCount))
@@ -1183,6 +1184,24 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
                 endActionMode()
             }
             builder.show()
+        } else {
+            val bottomSheet = DeleteOptionsBottomSheet()
+            bottomSheet.recipient = thread
+            bottomSheet.onDeleteForMeTapped = {
+                for (message in messages) {
+                    this.deleteLocally(message)
+                }
+                bottomSheet.dismiss()
+            }
+            bottomSheet.onDeleteForEveryoneTapped = {
+                for (message in messages) {
+                    this.deleteForEveryone(message)
+                }
+                bottomSheet.dismiss()
+            }
+            bottomSheet.onCancelTapped = { bottomSheet.dismiss() }
+            bottomSheet.show(supportFragmentManager, bottomSheet.tag)
+        }
     }
 
     override fun banUser(messages: Set<MessageRecord>) {

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

@@ -0,0 +1,52 @@
+package org.thoughtcrime.securesms.conversation.v2
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.isVisible
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment
+import kotlinx.android.synthetic.main.fragment_conversation_bottom_sheet.*
+import kotlinx.android.synthetic.main.fragment_delete_message_bottom_sheet.*
+import network.loki.messenger.R
+import org.session.libsession.utilities.recipients.Recipient
+import org.thoughtcrime.securesms.util.UiModeUtilities
+
+class DeleteOptionsBottomSheet: BottomSheetDialogFragment(), View.OnClickListener {
+
+    lateinit var recipient: Recipient
+
+    var onDeleteForMeTapped: (() -> Unit?)? = null
+    var onDeleteForEveryoneTapped: (() -> Unit)? = null
+    var onCancelTapped: (() -> Unit)? = null
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        return inflater.inflate(R.layout.fragment_delete_message_bottom_sheet, container, false)
+    }
+
+    override fun onClick(v: View?) {
+        when (v) {
+            deleteForMeTextView -> onDeleteForMeTapped?.invoke()
+            deleteForEveryoneTextView -> onDeleteForEveryoneTapped?.invoke()
+            cancelTextView -> onCancelTapped?.invoke()
+        }
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        if (!this::recipient.isInitialized) { return dismiss() }
+        if (!recipient.isGroupRecipient) {
+            deleteForEveryoneTextView.text = resources.getString(R.string.delete_message_for_me_and_recipient, recipient.name)
+        }
+        deleteForMeTextView.setOnClickListener(this)
+        deleteForEveryoneTextView.setOnClickListener(this)
+        cancelTextView.setOnClickListener(this)
+    }
+
+    override fun onStart() {
+        super.onStart()
+        val window = dialog?.window ?: return
+        val isLightMode = UiModeUtilities.isDayUiMode(requireContext())
+        window.setDimAmount(if (isLightMode) 0.1f else 0.75f)
+    }
+}

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

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    app:behavior_hideable="true"
+    app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">
+
+    <TextView
+        android:id="@+id/deleteForMeTextView"
+        style="@style/BottomSheetActionItem"
+        android:text="@string/delete_message_for_me"
+        android:textColor="@color/core_red"/>
+
+    <TextView
+        android:id="@+id/deleteForEveryoneTextView"
+        style="@style/BottomSheetActionItem"
+        android:text="@string/delete_message_for_everyone"
+        android:textColor="@color/core_red"/>
+
+    <TextView
+        android:id="@+id/cancelTextView"
+        style="@style/BottomSheetActionItem"
+        android:text="@string/cancel" />
+
+</LinearLayout>