Add display of handle when using multiple accounts (#2697)

- Shown on the main toolbar (subtitle)
- Shown just above the "replying to" message (even if not replying)

app/src/main/java/com/keylesspalace/tusky/MainActivity.kt

@@ -834,6 +834,9 @@ class MainActivity : BottomSheetActivity(), ActionButtonActivity, HasAndroidInje
         header.clear()
         header.profiles = profiles
         header.setActiveProfile(accountManager.activeAccount!!.id)
+        binding.mainToolbar.subtitle = if (accountManager.accounts.size > 1) {
+            accountManager.activeAccount!!.fullName
+        } else null
     }
 
     override fun getActionButton() = binding.composeButton

app/src/main/java/com/keylesspalace/tusky/components/compose/ComposeActivity.kt

@@ -236,6 +236,17 @@ class ComposeActivity :
         val composeOptions: ComposeOptions? = intent.getParcelableExtra(COMPOSE_OPTIONS_EXTRA)
 
         viewModel.setup(composeOptions)
+
+        if (accountManager.accounts.size > 1) {
+            binding.composeUsernameView.text = getString(
+                R.string.compose_active_account_description,
+                activeAccount.fullName
+            )
+            binding.composeUsernameView.show()
+        } else {
+            binding.composeUsernameView.hide()
+        }
+
         setupReplyViews(composeOptions?.replyingStatusAuthor, composeOptions?.replyingStatusContent)
         val statusContent = composeOptions?.content
         if (!statusContent.isNullOrEmpty()) {

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

@@ -71,6 +71,19 @@
             android:layout_height="wrap_content"
             android:orientation="vertical">
 
+            <TextView
+                android:id="@+id/composeUsernameView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="16dp"
+                android:layout_marginRight="16dp"
+                android:layout_marginBottom="0dp"
+                android:textSize="?attr/status_text_small"
+                android:textStyle="bold"
+                android:visibility="gone"
+                tools:text="Posting as @username@domain"
+                tools:visibility="visible" />
+
             <TextView
                 android:id="@+id/composeReplyView"
                 android:layout_width="wrap_content"

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

@@ -401,7 +401,7 @@
     <string name="action_add_to_list">Add account to the list</string>
     <string name="action_remove_from_list">Remove account from the list</string>
 
-    <string name="compose_active_account_description">Posting with account %1$s</string>
+    <string name="compose_active_account_description">Posting as %1$s</string>
 
     <string name="error_failed_set_caption">Failed to set caption</string>
     <plurals name="hint_describe_for_visually_impaired">