android, desktop: forward ui (#4039)

* android, desktop: forward ui

* changes

* attachment icon

* reorder lines

* reorder lines

* change

* inline content + formatted text

* fix header padding

* fix

* fix2

* Revert "fix header padding"

This reverts commit 63f2b15f02.

* broken default parameter

* changes

* more checks for file forwarding

* paddings

* padding

* padding and fix

---------

Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>

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

@@ -89,11 +89,12 @@ class MainActivity: FragmentActivity() {
   }
 
   override fun onBackPressed() {
-    if (
-      onBackPressedDispatcher.hasEnabledCallbacks() // Has something to do in a backstack
-      || Build.VERSION.SDK_INT >= Build.VERSION_CODES.R // Android 11 or above
-      || isTaskRoot // there are still other tasks after we reach the main (home) activity
-    ) {
+    val canFinishActivity = (
+        onBackPressedDispatcher.hasEnabledCallbacks() // Has something to do in a backstack
+            || Build.VERSION.SDK_INT >= Build.VERSION_CODES.R // Android 11 or above
+            || isTaskRoot // there are still other tasks after we reach the main (home) activity
+        ) && SimplexApp.context.chatModel.sharedContent.value !is SharedContent.Forward
+    if (canFinishActivity) {
       // https://medium.com/mobile-app-development-publication/the-risk-of-android-strandhogg-security-issue-and-how-it-can-be-mitigated-80d2ddb4af06
       super.onBackPressed()
     }
@@ -104,9 +105,15 @@ class MainActivity: FragmentActivity() {
       AppLock.laFailed.value = true
     }
     if (!onBackPressedDispatcher.hasEnabledCallbacks()) {
+      val sharedContent = chatModel.sharedContent.value
       // Drop shared content
-      SimplexApp.context.chatModel.sharedContent.value = null
-      finish()
+      chatModel.sharedContent.value = null
+      if (sharedContent is SharedContent.Forward) {
+        chatModel.chatId.value = sharedContent.fromChatInfo.id
+      }
+      if (canFinishActivity) {
+        finish()
+      }
     }
   }
 }