android: Sharing text and files from other apps and from Simplex itself to Simplex (#1140)

* android: Sharing text and files from other apps and from Simplex itself to Simplex

* Different look and feel of share list

* Strings

apps/android/app/src/main/AndroidManifest.xml

@@ -63,6 +63,12 @@
         <data android:pathPrefix="/invitation" />
         <data android:pathPrefix="/contact" />
       </intent-filter>
+      <!-- Receive files from other apps -->
+      <intent-filter>
+        <action android:name="android.intent.action.SEND" />
+        <category android:name="android.intent.category.DEFAULT" />
+        <data android:mimeType="*/*" />
+      </intent-filter>
     </activity>
 
     <activity-alias

apps/android/app/src/main/java/chat/simplex/app/MainActivity.kt

@@ -4,6 +4,7 @@ import android.app.Application
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
+import android.os.Parcelable
 import android.os.SystemClock.elapsedRealtime
 import android.util.Log
 import androidx.activity.compose.setContent
@@ -30,8 +31,7 @@ import chat.simplex.app.views.SplashView
 import chat.simplex.app.views.call.ActiveCallView
 import chat.simplex.app.views.call.IncomingCallAlertView
 import chat.simplex.app.views.chat.ChatView
-import chat.simplex.app.views.chatlist.ChatListView
-import chat.simplex.app.views.chatlist.openChat
+import chat.simplex.app.views.chatlist.*
 import chat.simplex.app.views.database.DatabaseErrorView
 import chat.simplex.app.views.helpers.*
 import chat.simplex.app.views.newchat.connectViaUri
@@ -66,6 +66,7 @@ class MainActivity: FragmentActivity() {
     // Only needed to be processed on first creation of activity
     if (savedInstanceState == null) {
       processNotificationIntent(intent, m)
+      processExternalIntent(intent, m)
     }
     setContent {
       SimpleXTheme {
@@ -92,6 +93,7 @@ class MainActivity: FragmentActivity() {
   override fun onNewIntent(intent: Intent?) {
     super.onNewIntent(intent)
     processIntent(intent, vm.chatModel)
+    processExternalIntent(intent, vm.chatModel)
   }
 
   override fun onStart() {
@@ -114,6 +116,10 @@ class MainActivity: FragmentActivity() {
       clearAuthState()
       laFailed.value = true
     }
+    if (!onBackPressedDispatcher.hasEnabledCallbacks()) {
+      // Drop shared content
+      SimplexApp.context.chatModel.sharedContent.value = null
+    }
   }
 
   private fun runAuthenticate() {
@@ -322,7 +328,12 @@ fun MainPage(
           else {
             showAdvertiseLAAlert = true
             val stopped = chatModel.chatRunning.value == false
-            if (chatModel.chatId.value == null) ChatListView(chatModel, setPerformLA, stopped)
+            if (chatModel.chatId.value == null) {
+              if (chatModel.sharedContent.value == null)
+                ChatListView(chatModel, setPerformLA, stopped)
+              else
+                ShareListView(chatModel, stopped)
+            }
             else ChatView(chatModel)
           }
         }
@@ -380,6 +391,27 @@ fun processIntent(intent: Intent?, chatModel: ChatModel) {
   }
 }
 
+fun processExternalIntent(intent: Intent?, chatModel: ChatModel) {
+  when (intent?.action) {
+    Intent.ACTION_SEND -> {
+      // Close active chat and show a list of chats
+      chatModel.chatId.value = null
+      chatModel.clearOverlays.value = true
+      when {
+        "text/plain" == intent.type -> intent.getStringExtra(Intent.EXTRA_TEXT)?.let {
+          chatModel.sharedContent.value = SharedContent.Text(it)
+        }
+        intent.type?.startsWith("image/") == true -> (intent.getParcelableExtra<Parcelable>(Intent.EXTRA_STREAM) as? Uri)?.let {
+          chatModel.sharedContent.value = SharedContent.Image(it)
+        } // All other mime types
+        else -> (intent.getParcelableExtra<Parcelable>(Intent.EXTRA_STREAM) as? Uri)?.let {
+          chatModel.sharedContent.value = SharedContent.File(it)
+        }
+      }
+    }
+  }
+}
+
 fun connectIfOpenedViaUri(uri: Uri, chatModel: ChatModel) {
   Log.d(TAG, "connectIfOpenedViaUri: opened via link")
   if (chatModel.currentUser.value == null) {

apps/android/app/src/main/java/chat/simplex/app/model/ChatModel.kt

@@ -10,8 +10,7 @@ import androidx.compose.ui.text.style.TextDecoration
 import chat.simplex.app.R
 import chat.simplex.app.ui.theme.*
 import chat.simplex.app.views.call.*
-import chat.simplex.app.views.helpers.DBMigrationResult
-import chat.simplex.app.views.helpers.generalGetString
+import chat.simplex.app.views.helpers.*
 import chat.simplex.app.views.onboarding.OnboardingStage
 import chat.simplex.app.views.usersettings.NotificationPreviewMode
 import chat.simplex.app.views.usersettings.NotificationsMode
@@ -64,6 +63,9 @@ class ChatModel(val controller: ChatController) {
   val showCallView = mutableStateOf(false)
   val switchingCall = mutableStateOf(false)
 
+  // working with external intents
+  val sharedContent = mutableStateOf(null as SharedContent?)
+
   fun updateUserProfile(profile: LocalProfile) {
     val user = currentUser.value
     if (user != null) {
@@ -621,7 +623,7 @@ data class GroupInfo (
   override val chatType get() = ChatType.Group
   override val id get() = "#$groupId"
   override val apiId get() = groupId
-  override val ready get() = true
+  override val ready get() = membership.memberActive
   override val sendMsgEnabled get() = membership.memberActive
   override val ntfsEnabled get() = chatSettings.enableNtfs
   override val displayName get() = groupProfile.displayName

apps/android/app/src/main/java/chat/simplex/app/views/chat/ComposeView.kt

@@ -222,9 +222,7 @@ fun ComposeView(
       }
     }
   }
-  val galleryLauncher = rememberLauncherForActivityResult(contract = PickFromGallery(), processPickedImage)
-  val galleryLauncherFallback = rememberGetContentLauncher(processPickedImage)
-  val filesLauncher = rememberGetContentLauncher { uri: Uri? ->
+  val processPickedFile  = { uri: Uri? ->
     if (uri != null) {
       val fileSize = getFileSize(context, uri)
       if (fileSize != null && fileSize <= MAX_FILE_SIZE) {
@@ -241,6 +239,9 @@ fun ComposeView(
       }
     }
   }
+  val galleryLauncher = rememberLauncherForActivityResult(contract = PickFromGallery(), processPickedImage)
+  val galleryLauncherFallback = rememberGetContentLauncher(processPickedImage)
+  val filesLauncher = rememberGetContentLauncher(processPickedFile)
 
   LaunchedEffect(attachmentOption.value) {
     when (attachmentOption.value) {
@@ -495,6 +496,16 @@ fun ComposeView(
     }
   }
 
+  LaunchedEffect(chatModel.sharedContent.value) {
+    when (val shared = chatModel.sharedContent.value) {
+      is SharedContent.Text -> onMessageChange(shared.text)
+      is SharedContent.Image -> processPickedImage(shared.uri)
+      is SharedContent.File -> processPickedFile(shared.uri)
+      null -> {}
+    }
+    chatModel.sharedContent.value = null
+  }
+
   Column {
     contextItemView()
     when {

apps/android/app/src/main/java/chat/simplex/app/views/chatlist/ChatListView.kt

@@ -177,7 +177,7 @@ private fun ConnectButton(text: String, onClick: () -> Unit) {
 }
 
 @Composable
-fun ChatListToolbar(chatModel: ChatModel, scaffoldCtrl: ScaffoldController, stopped: Boolean, onSearchValueChanged: (String) -> Unit) {
+private fun ChatListToolbar(chatModel: ChatModel, scaffoldCtrl: ScaffoldController, stopped: Boolean, onSearchValueChanged: (String) -> Unit) {
   var showSearch by rememberSaveable { mutableStateOf(false) }
   val hideSearchOnBack = { onSearchValueChanged(""); showSearch = false }
   if (showSearch) {
@@ -236,7 +236,7 @@ fun ChatListToolbar(chatModel: ChatModel, scaffoldCtrl: ScaffoldController, stop
 }
 
 @Composable
-fun ChatList(chatModel: ChatModel, search: String) {
+private fun ChatList(chatModel: ChatModel, search: String) {
   val filter: (Chat) -> Boolean = { chat: Chat ->
     chat.chatInfo.chatViewName.lowercase().contains(search.lowercase())
   }

apps/android/app/src/main/java/chat/simplex/app/views/chatlist/ShareListNavLinkView.kt

@@ -0,0 +1,66 @@
+package chat.simplex.app.views.chatlist
+
+import SectionItemView
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import chat.simplex.app.model.*
+import chat.simplex.app.ui.theme.Indigo
+import chat.simplex.app.views.helpers.ProfileImage
+
+@Composable
+fun ShareListNavLinkView(chat: Chat, chatModel: ChatModel) {
+  val stopped = chatModel.chatRunning.value == false
+  when (chat.chatInfo) {
+    is ChatInfo.Direct ->
+      ShareListNavLinkLayout(
+        chatLinkPreview = { SharePreviewView(chat) },
+        click = { directChatAction(chat.chatInfo, chatModel) },
+        stopped
+      )
+    is ChatInfo.Group ->
+      ShareListNavLinkLayout(
+        chatLinkPreview = { SharePreviewView(chat) },
+        click = { groupChatAction(chat.chatInfo.groupInfo, chatModel) },
+        stopped
+      )
+    is ChatInfo.ContactRequest, is ChatInfo.ContactConnection -> {}
+  }
+}
+
+@Composable
+private fun ShareListNavLinkLayout(
+  chatLinkPreview: @Composable () -> Unit,
+  click: () -> Unit,
+  stopped: Boolean
+) {
+  SectionItemView(minHeight = 50.dp, click = click, disabled = stopped) {
+    chatLinkPreview()
+  }
+  Divider(Modifier.padding(horizontal = 8.dp))
+}
+
+@Composable
+private fun SharePreviewView(chat: Chat) {
+  Row(
+    Modifier.fillMaxSize(),
+    horizontalArrangement = Arrangement.SpaceBetween,
+    verticalAlignment = Alignment.CenterVertically
+  ) {
+    Row(
+      verticalAlignment = Alignment.CenterVertically,
+      horizontalArrangement = Arrangement.spacedBy(4.dp)
+    ) {
+      ProfileImage(size = 46.dp, chat.chatInfo.image)
+      Text(
+        chat.chatInfo.chatViewName, maxLines = 1, overflow = TextOverflow.Ellipsis,
+        color = if (chat.chatInfo.incognito) Indigo else Color.Unspecified
+      )
+    }
+  }
+}

apps/android/app/src/main/java/chat/simplex/app/views/chatlist/ShareListView.kt

@@ -0,0 +1,138 @@
+package chat.simplex.app.views.chatlist
+
+import androidx.activity.compose.BackHandler
+import androidx.compose.foundation.*
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material.icons.outlined.*
+import androidx.compose.runtime.*
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.capitalize
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.intl.Locale
+import androidx.compose.ui.unit.dp
+import chat.simplex.app.R
+import chat.simplex.app.model.*
+import chat.simplex.app.ui.theme.HighOrLowlight
+import chat.simplex.app.ui.theme.Indigo
+import chat.simplex.app.views.helpers.*
+
+@Composable
+fun ShareListView(chatModel: ChatModel, stopped: Boolean) {
+  var searchInList by rememberSaveable { mutableStateOf("") }
+  Scaffold(
+    topBar = { Column { ShareListToolbar(chatModel, stopped) { searchInList = it.trim() } } },
+  ) {
+    Box(Modifier.padding(it)) {
+      Column(
+        modifier = Modifier
+          .fillMaxSize()
+          .background(MaterialTheme.colors.background)
+      ) {
+        if (chatModel.chats.isNotEmpty()) {
+          ShareList(chatModel, search = searchInList)
+        } else {
+          EmptyList()
+        }
+      }
+    }
+  }
+}
+
+@Composable
+private fun EmptyList() {
+  Box {
+    Text(stringResource(R.string.you_have_no_chats), Modifier.align(Alignment.Center), color = HighOrLowlight)
+  }
+}
+
+@Composable
+private fun ShareListToolbar(chatModel: ChatModel, stopped: Boolean, onSearchValueChanged: (String) -> Unit) {
+  var showSearch by rememberSaveable { mutableStateOf(false) }
+  val hideSearchOnBack = { onSearchValueChanged(""); showSearch = false }
+  if (showSearch) {
+    BackHandler(onBack = hideSearchOnBack)
+  }
+  val barButtons = arrayListOf<@Composable RowScope.() -> Unit>()
+  if (chatModel.chats.size >= 8) {
+    barButtons.add {
+      IconButton({ showSearch = true }) {
+        Icon(Icons.Outlined.Search, stringResource(android.R.string.search_go).capitalize(Locale.current), tint = MaterialTheme.colors.primary)
+      }
+    }
+  }
+  if (stopped) {
+    barButtons.add {
+      IconButton(onClick = {
+        AlertManager.shared.showAlertMsg(
+          generalGetString(R.string.chat_is_stopped_indication),
+          generalGetString(R.string.you_can_start_chat_via_setting_or_by_restarting_the_app)
+        )
+      }) {
+        Icon(
+          Icons.Filled.Report,
+          generalGetString(R.string.chat_is_stopped_indication),
+          tint = Color.Red,
+        )
+      }
+    }
+  }
+
+  DefaultTopAppBar(
+    navigationButton = { if (showSearch) NavigationButtonBack(hideSearchOnBack) else NavigationButtonBack { chatModel.sharedContent.value = null } },
+    title = {
+      Row(verticalAlignment = Alignment.CenterVertically) {
+        Text(
+          when (chatModel.sharedContent.value) {
+            is SharedContent.Text -> stringResource(R.string.share_message)
+            is SharedContent.Image -> stringResource(R.string.share_image)
+            is SharedContent.File -> stringResource(R.string.share_file)
+            else -> stringResource(R.string.share_message)
+          },
+          color = MaterialTheme.colors.onBackground,
+          fontWeight = FontWeight.SemiBold,
+        )
+        if (chatModel.incognito.value) {
+          Icon(
+            Icons.Filled.TheaterComedy,
+            stringResource(R.string.incognito),
+            tint = Indigo,
+            modifier = Modifier.padding(10.dp).size(26.dp)
+          )
+        }
+      }
+    },
+    onTitleClick = null,
+    showSearch = showSearch,
+    onSearchValueChanged = onSearchValueChanged,
+    buttons = barButtons
+  )
+  Divider()
+}
+
+@Composable
+private fun ShareList(chatModel: ChatModel, search: String) {
+  val filter: (Chat) -> Boolean = { chat: Chat ->
+    chat.chatInfo.chatViewName.lowercase().contains(search.lowercase())
+  }
+  val chats by remember(search) {
+    derivedStateOf {
+      if (search.isEmpty()) chatModel.chats.filter { it.chatInfo.ready } else chatModel.chats.filter { it.chatInfo.ready }.filter(filter)
+    }
+  }
+  LazyColumn(
+    modifier = Modifier.fillMaxWidth()
+  ) {
+    items(chats) { chat ->
+      ShareListNavLinkView(chat, chatModel)
+    }
+  }
+}

apps/android/app/src/main/java/chat/simplex/app/views/helpers/Enums.kt

@@ -0,0 +1,9 @@
+package chat.simplex.app.views.helpers
+
+import android.net.Uri
+
+sealed class SharedContent {
+  data class Text(val text: String): SharedContent()
+  data class Image(val uri: Uri): SharedContent()
+  data class File(val uri: Uri): SharedContent()
+}

apps/android/app/src/main/res/values-de/strings.xml

@@ -170,6 +170,11 @@
   <string name="chat_with_developers">Chatten Sie mit den Entwicklern</string>
   <string name="you_have_no_chats">Sie haben keine Chats</string>
 
+  <!-- ShareListView.kt -->
+  <string name="share_message">Share message…</string>
+  <string name="share_image">Share image…</string>
+  <string name="share_file">Share file…</string>
+
   <!-- ComposeView.kt, helpers -->
   <string name="attach">Anhängen</string>
   <string name="icon_descr_context">Kontextsymbol</string>

apps/android/app/src/main/res/values-ru/strings.xml

@@ -170,6 +170,11 @@
     <string name="chat_with_developers">Соединиться с разработчиками</string>
     <string name="you_have_no_chats">У вас нет чатов</string>
 
+    <!-- ShareListView.kt -->
+    <string name="share_message">Отправить сообщение…</string>
+    <string name="share_image">Отправить изображение…</string>
+    <string name="share_file">Отправить файл…</string>
+
     <!-- ComposeView.kt, helpers -->
     <string name="attach">Прикрепить</string>
     <string name="icon_descr_context">Значок контекста</string>

apps/android/app/src/main/res/values/strings.xml

@@ -170,6 +170,11 @@
   <string name="chat_with_developers">Chat with the developers</string>
   <string name="you_have_no_chats">You have no chats</string>
 
+  <!-- ShareListView.kt -->
+  <string name="share_message">Share message…</string>
+  <string name="share_image">Share image…</string>
+  <string name="share_file">Share file…</string>
+
   <!-- ComposeView.kt, helpers -->
   <string name="attach">Attach</string>
   <string name="icon_descr_context">Context icon</string>