Give the possibility to enable encryption when creating room (#837)

CHANGES.md

@@ -3,6 +3,7 @@ Changes in RiotX 0.14.0 (2020-XX-XX)
 
 Features ✨:
  - Enable encryption in unencrypted rooms, from the room settings (#212)
+ - Enable e2e by default when creating DM, and give the possibility to enable encryption when creating room (#837)
 
 Improvements 🙌:
  - Sharing things to RiotX: sort list by recent room first (#771)

vector/src/main/java/im/vector/riotx/features/roomdirectory/createroom/CreateRoomAction.kt

@@ -22,5 +22,6 @@ sealed class CreateRoomAction : VectorViewModelAction {
     data class SetName(val name: String) : CreateRoomAction()
     data class SetIsPublic(val isPublic: Boolean) : CreateRoomAction()
     data class SetIsInRoomDirectory(val isInRoomDirectory: Boolean) : CreateRoomAction()
+    data class SetIsEncrypted(val isEncrypted: Boolean) : CreateRoomAction()
     object Create : CreateRoomAction()
 }

vector/src/main/java/im/vector/riotx/features/roomdirectory/createroom/CreateRoomController.kt

@@ -39,9 +39,7 @@ class CreateRoomController @Inject constructor(private val stringProvider: Strin
     var index = 0
 
     override fun buildModels(viewState: CreateRoomViewState) {
-        val asyncCreateRoom = viewState.asyncCreateRoomRequest
+        when (val asyncCreateRoom = viewState.asyncCreateRoomRequest) {
-
-        when (asyncCreateRoom) {
             is Success       -> {
                 // Nothing to display, the screen will be closed
             }
@@ -101,12 +99,24 @@ class CreateRoomController @Inject constructor(private val stringProvider: Strin
                 listener?.setIsInRoomDirectory(value)
             }
         }
+        formSwitchItem {
+            id("encryption")
+            enabled(enableFormElement)
+            title(stringProvider.getString(R.string.create_room_encryption_title))
+            summary(stringProvider.getString(R.string.create_room_encryption_description))
+            switchChecked(viewState.isEncrypted)
+
+            listener { value ->
+                listener?.setIsEncrypted(value)
+            }
+        }
     }
 
     interface Listener {
         fun onNameChange(newName: String)
         fun setIsPublic(isPublic: Boolean)
         fun setIsInRoomDirectory(isInRoomDirectory: Boolean)
+        fun setIsEncrypted(isEncrypted: Boolean)
         fun retry()
     }
 }

vector/src/main/java/im/vector/riotx/features/roomdirectory/createroom/CreateRoomFragment.kt

@@ -85,6 +85,10 @@ class CreateRoomFragment @Inject constructor(private val createRoomController: C
         viewModel.handle(CreateRoomAction.SetIsInRoomDirectory(isInRoomDirectory))
     }
 
+    override fun setIsEncrypted(isEncrypted: Boolean) {
+        viewModel.handle(CreateRoomAction.SetIsEncrypted(isEncrypted))
+    }
+
     override fun retry() {
         Timber.v("Retry")
         viewModel.handle(CreateRoomAction.Create)

vector/src/main/java/im/vector/riotx/features/roomdirectory/createroom/CreateRoomViewModel.kt

@@ -31,6 +31,7 @@ import im.vector.matrix.android.api.session.room.model.RoomDirectoryVisibility
 import im.vector.matrix.android.api.session.room.model.create.CreateRoomParams
 import im.vector.matrix.android.api.session.room.model.create.CreateRoomPreset
 import im.vector.riotx.core.platform.EmptyViewEvents
+import im.vector.matrix.android.internal.crypto.MXCRYPTO_ALGORITHM_MEGOLM
 import im.vector.riotx.core.platform.VectorViewModel
 import im.vector.riotx.features.roomdirectory.RoomDirectoryActivity
 
@@ -62,6 +63,7 @@ class CreateRoomViewModel @AssistedInject constructor(@Assisted initialState: Cr
             is CreateRoomAction.SetName              -> setName(action)
             is CreateRoomAction.SetIsPublic          -> setIsPublic(action)
             is CreateRoomAction.SetIsInRoomDirectory -> setIsInRoomDirectory(action)
+            is CreateRoomAction.SetIsEncrypted       -> setIsEncrypted(action)
             is CreateRoomAction.Create               -> doCreateRoom()
         }
     }
@@ -72,6 +74,8 @@ class CreateRoomViewModel @AssistedInject constructor(@Assisted initialState: Cr
 
     private fun setIsInRoomDirectory(action: CreateRoomAction.SetIsInRoomDirectory) = setState { copy(isInRoomDirectory = action.isInRoomDirectory) }
 
+    private fun setIsEncrypted(action: CreateRoomAction.SetIsEncrypted) = setState { copy(isEncrypted = action.isEncrypted) }
+
     private fun doCreateRoom() = withState { state ->
         if (state.asyncCreateRoomRequest is Loading || state.asyncCreateRoomRequest is Success) {
             return@withState
@@ -89,6 +93,11 @@ class CreateRoomViewModel @AssistedInject constructor(@Assisted initialState: Cr
 
             // Public room
             preset = if (state.isPublic) CreateRoomPreset.PRESET_PUBLIC_CHAT else CreateRoomPreset.PRESET_PRIVATE_CHAT
+
+            // Encryption
+            if (state.isEncrypted) {
+                enableEncryptionWithAlgorithm(MXCRYPTO_ALGORITHM_MEGOLM)
+            }
         }
 
         session.createRoom(createRoomParams, object : MatrixCallback<String> {

vector/src/main/java/im/vector/riotx/features/roomdirectory/createroom/CreateRoomViewState.kt

@@ -24,5 +24,6 @@ data class CreateRoomViewState(
         val roomName: String = "",
         val isPublic: Boolean = false,
         val isInRoomDirectory: Boolean = false,
+        val isEncrypted: Boolean = false,
         val asyncCreateRoomRequest: Async<String> = Uninitialized
 ) : MvRxState

vector/src/main/res/values/strings_riotX.xml

@@ -3,6 +3,9 @@
 
     <!-- Strings not defined in Riot -->
 
+    <string name="create_room_encryption_title">"Enable encryption"</string>
+    <string name="create_room_encryption_description">"Once enabled, encryption cannot be disabled."</string>
+
     <string name="login_error_threepid_denied">Your email domain is not authorized to register on this server</string>
 
     <string name="room_profile_not_encrypted_subtitle">Messages in this room are not end-to-end encrypted.</string>