Implement conversation item context menu interaction

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

@@ -14,15 +14,28 @@ import kotlinx.android.synthetic.main.activity_conversation_v2.*
 import kotlinx.android.synthetic.main.activity_conversation_v2_action_bar.*
 import network.loki.messenger.R
 import org.thoughtcrime.securesms.PassphraseRequiredActionBarActivity
+import org.thoughtcrime.securesms.conversation.v2.menus.ConversationActionModeCallback
+import org.thoughtcrime.securesms.conversation.v2.menus.ConversationMenuHelper
 import org.thoughtcrime.securesms.database.DatabaseFactory
+import org.thoughtcrime.securesms.database.model.MessageRecord
 import org.thoughtcrime.securesms.mms.GlideApp
 
 class ConversationActivityV2 : PassphraseRequiredActionBarActivity() {
     private var threadID: Long = -1
+    private var actionMode: ActionMode? = null
 
     private val adapter by lazy {
         val cursor = DatabaseFactory.getMmsSmsDatabase(this).getConversation(threadID)
-        val adapter = ConversationAdapter(this, cursor) { handleLongPress(it) }
+        val adapter = ConversationAdapter(
+            this,
+            cursor,
+            onItemPress = { message, position ->
+                handlePress(message, position)
+            },
+            onItemLongPress = { message, position ->
+                handleLongPress(message, position)
+            }
+        )
         adapter.setHasStableIds(true)
         adapter
     }
@@ -84,7 +97,10 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity() {
     }
 
     override fun onPrepareOptionsMenu(menu: Menu): Boolean {
-        return ConversationMenuHelper.onPrepareOptionsMenu(menu, menuInflater, thread, this) { onOptionsItemSelected(it) }
+        ConversationMenuHelper.onPrepareOptionsMenu(menu, menuInflater, thread, this) { onOptionsItemSelected(it) }
+        // FIXME: Make the menu respect the current app theme
+        super.onPrepareOptionsMenu(menu)
+        return true
     }
     // endregion
 
@@ -98,12 +114,36 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity() {
         Log.d("Loki", "Reply to message at position: $messagePosition.")
     }
 
-    private fun handleLongPress(messagePosition: Int) {
+    private fun handlePress(message: MessageRecord, position: Int) {
+        val actionMode = this.actionMode
+        if (actionMode != null) {
+            adapter.toggleSelection(message, position)
+            val actionModeCallback = ConversationActionModeCallback(adapter, threadID, this)
+            actionModeCallback.updateActionModeMenu(actionMode.menu)
+            if (adapter.selectedItems.isEmpty()) {
+                actionMode.finish()
+                this.actionMode = null
+            }
+        }
+    }
+
+    private fun handleLongPress(message: MessageRecord, position: Int) {
+        val actionMode = this.actionMode
         val actionModeCallback = ConversationActionModeCallback(adapter, threadID, this)
-        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
-            startActionMode(actionModeCallback, ActionMode.TYPE_PRIMARY)
+        if (actionMode == null) { // Nothing should be selected if this is the case
+            adapter.toggleSelection(message, position)
+            this.actionMode = if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+                startActionMode(actionModeCallback, ActionMode.TYPE_PRIMARY)
+            } else {
+                startActionMode(actionModeCallback)
+            }
         } else {
-            startActionMode(actionModeCallback)
+            adapter.toggleSelection(message, position)
+            actionModeCallback.updateActionModeMenu(actionMode.menu)
+            if (adapter.selectedItems.isEmpty()) {
+                actionMode.finish()
+                this.actionMode = null
+            }
         }
     }
     // endregion

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

@@ -2,19 +2,22 @@ package org.thoughtcrime.securesms.conversation.v2
 
 import android.content.Context
 import android.database.Cursor
+import android.graphics.drawable.ColorDrawable
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView.ViewHolder
+import network.loki.messenger.R
 import org.thoughtcrime.securesms.conversation.v2.messages.ControlMessageView
 import org.thoughtcrime.securesms.conversation.v2.messages.VisibleMessageView
 import org.thoughtcrime.securesms.database.CursorRecyclerViewAdapter
 import org.thoughtcrime.securesms.database.DatabaseFactory
 import org.thoughtcrime.securesms.database.model.MessageRecord
+import org.thoughtcrime.securesms.loki.utilities.getColorWithID
 import java.lang.IllegalStateException
 
-class ConversationAdapter(context: Context, cursor: Cursor, private val onItemLongPress: (Int) -> Unit)
-    : CursorRecyclerViewAdapter<ViewHolder>(context, cursor) {
+class ConversationAdapter(context: Context, cursor: Cursor, private val onItemPress: (MessageRecord, Int) -> Unit,
+    private val onItemLongPress: (MessageRecord, Int) -> Unit) : CursorRecyclerViewAdapter<ViewHolder>(context, cursor) {
     private val messageDB = DatabaseFactory.getMmsSmsDatabase(context)
-    var selectedItems = setOf<MessageRecord>()
+    var selectedItems = mutableSetOf<MessageRecord>()
 
     sealed class ViewType(val rawValue: Int) {
         object Visible : ViewType(0)
@@ -59,9 +62,15 @@ class ConversationAdapter(context: Context, cursor: Cursor, private val onItemLo
         when (viewHolder) {
             is VisibleMessageViewHolder -> {
                 val view = viewHolder.view
+                view.background = if (selectedItems.contains(message)) {
+                    ColorDrawable(context.resources.getColorWithID(R.color.red, context.theme))
+                } else {
+                    null
+                }
                 view.bind(message)
+                view.setOnClickListener { onItemPress(message, viewHolder.adapterPosition) }
                 view.setOnLongClickListener {
-                    onItemLongPress(viewHolder.adapterPosition)
+                    onItemLongPress(message, viewHolder.adapterPosition)
                     true
                 }
             }
@@ -80,4 +89,9 @@ class ConversationAdapter(context: Context, cursor: Cursor, private val onItemLo
     private fun getMessage(cursor: Cursor): MessageRecord? {
         return messageDB.readerFor(cursor).current
     }
+
+    fun toggleSelection(message: MessageRecord, position: Int) {
+        if (selectedItems.contains(message)) selectedItems.remove(message) else selectedItems.add(message)
+        notifyItemChanged(position)
+    }
 }

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

@@ -1,4 +1,4 @@
-package org.thoughtcrime.securesms.conversation.v2
+package org.thoughtcrime.securesms.conversation.v2.menus
 
 import android.content.Context
 import android.view.ActionMode
@@ -7,21 +7,26 @@ import android.view.MenuItem
 import network.loki.messenger.R
 import org.session.libsession.messaging.open_groups.OpenGroupAPIV2
 import org.session.libsession.utilities.TextSecurePreferences
+import org.thoughtcrime.securesms.conversation.v2.ConversationAdapter
 import org.thoughtcrime.securesms.database.DatabaseFactory
 import org.thoughtcrime.securesms.database.model.MediaMmsMessageRecord
-import java.util.*
 
 class ConversationActionModeCallback(private val adapter: ConversationAdapter, private val threadID: Long,
     private val context: Context) : ActionMode.Callback {
 
     override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
-        // Prepare
         val inflater = mode.menuInflater
         inflater.inflate(R.menu.menu_conversation_item_action, menu)
+        updateActionModeMenu(menu)
+        return true
+    }
+
+    fun updateActionModeMenu(menu: Menu) {
+        // Prepare
         val selectedItems = adapter.selectedItems
         val containsControlMessage = selectedItems.any { it.isUpdate }
         val hasText = selectedItems.any { it.body.isNotEmpty() }
-        if (selectedItems.isEmpty()) { mode.finish(); return false }
+        if (selectedItems.isEmpty()) { return }
         val firstMessage = selectedItems.iterator().next()
         val openGroup = DatabaseFactory.getLokiThreadDatabase(context).getOpenGroupChat(threadID)
         val userPublicKey = TextSecurePreferences.getLocalNumber(context)!!
@@ -58,8 +63,6 @@ class ConversationActionModeCallback(private val adapter: ConversationAdapter, p
         // Reply
         menu.findItem(R.id.menu_context_reply).isVisible =
             (selectedItems.size == 1 && !firstMessage.isPending && !firstMessage.isFailed)
-        // Return
-        return true
     }
 
     override fun onPrepareActionMode(mode: ActionMode?, menu: Menu): Boolean {
@@ -71,6 +74,7 @@ class ConversationActionModeCallback(private val adapter: ConversationAdapter, p
     }
 
     override fun onDestroyActionMode(mode: ActionMode) {
-
+        adapter.selectedItems.clear()
+        adapter.notifyDataSetChanged()
     }
 }

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

@@ -1,4 +1,4 @@
-package org.thoughtcrime.securesms.conversation.v2
+package org.thoughtcrime.securesms.conversation.v2.menus
 
 import android.content.Context
 import android.graphics.PorterDuff
@@ -16,7 +16,7 @@ import org.thoughtcrime.securesms.loki.utilities.getColorWithID
 
 object ConversationMenuHelper {
     
-    fun onPrepareOptionsMenu(menu: Menu, inflater: MenuInflater, thread: Recipient, context: Context, onOptionsItemSelected: (MenuItem) -> Unit): Boolean {
+    fun onPrepareOptionsMenu(menu: Menu, inflater: MenuInflater, thread: Recipient, context: Context, onOptionsItemSelected: (MenuItem) -> Unit) {
         // Prepare
         menu.clear()
         val isOpenGroup = thread.isOpenGroupRecipient
@@ -62,7 +62,5 @@ object ConversationMenuHelper {
             inflater.inflate(R.menu.menu_conversation_unmuted, menu)
         }
         // TODO: Implement search
-        // Return
-        return true
     }
 }

app/src/main/res/menu/menu_conversation_item_action.xml

@@ -4,37 +4,11 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <item
-        android:title="@string/conversation_context__menu_message_details"
-        android:id="@+id/menu_context_details"
-        app:showAsAction="never" />
-
-    <item
-        android:title="@string/conversation_context__menu_delete_message"
-        android:id="@+id/menu_context_delete_message"
-        android:icon="?menu_trash_icon"
+        android:title="@string/conversation_context__menu_reply_to_message"
+        android:id="@+id/menu_context_reply"
+        android:icon="?menu_reply_icon"
         app:showAsAction="ifRoom" />
 
-    <item
-        android:title="@string/conversation_context__menu_ban_user"
-        android:id="@+id/menu_context_ban_user"
-        app:showAsAction="never" />
-
-    <item
-        android:title="@string/conversation_context__menu_copy_text"
-        android:id="@+id/menu_context_copy"
-        android:icon="?menu_copy_icon"
-        app:showAsAction="ifRoom" />
-
-    <item
-        android:title="@string/activity_conversation_copy_public_key_button_title"
-        android:id="@+id/menu_context_copy_public_key"
-        app:showAsAction="never" />
-
-    <item
-        android:title="@string/conversation_context__menu_resend_message"
-        android:id="@+id/menu_context_resend"
-        app:showAsAction="never" />
-
     <item
         android:title="@string/conversation_context_image__save_attachment"
         android:id="@+id/menu_context_save_attachment"
@@ -42,9 +16,35 @@
         app:showAsAction="ifRoom" />
 
     <item
-        android:title="@string/conversation_context__menu_reply_to_message"
-        android:id="@+id/menu_context_reply"
-        android:icon="?menu_reply_icon"
+        android:title="@string/conversation_context__menu_delete_message"
+        android:id="@+id/menu_context_delete_message"
+        android:icon="?menu_trash_icon"
         app:showAsAction="ifRoom" />
 
+    <item
+        android:title="@string/conversation_context__menu_copy_text"
+        android:id="@+id/menu_context_copy"
+        android:icon="?menu_copy_icon"
+        app:showAsAction="ifRoom" />
+
+    <item
+        android:title="@string/conversation_context__menu_resend_message"
+        android:id="@+id/menu_context_resend"
+        app:showAsAction="never" />
+
+    <item
+        android:title="@string/conversation_context__menu_message_details"
+        android:id="@+id/menu_context_details"
+        app:showAsAction="never" />
+
+    <item
+        android:title="@string/conversation_context__menu_ban_user"
+        android:id="@+id/menu_context_ban_user"
+        app:showAsAction="never" />
+
+    <item
+        android:title="@string/activity_conversation_copy_public_key_button_title"
+        android:id="@+id/menu_context_copy_public_key"
+        app:showAsAction="never" />
+
 </menu>