Fix issue where incognito mode was not enabled in text story creation.

app/src/main/java/org/thoughtcrime/securesms/mediapreview/MediaPreviewV2Fragment.kt

@@ -284,7 +284,8 @@ class MediaPreviewV2Fragment : Fragment(R.layout.fragment_media_preview_v2), Med
         windowInsetsCompat.getSystemWindowInsetLeft(),
         layoutParams.topMargin,
         windowInsetsCompat.getSystemWindowInsetRight(),
-        windowInsetsCompat.getSystemWindowInsetBottom())
+        windowInsetsCompat.getSystemWindowInsetBottom()
+      )
       view.layoutParams = layoutParams
       windowInsetsCompat
     }

app/src/main/java/org/thoughtcrime/securesms/mediasend/v2/text/TextStoryPostLinkEntryFragment.kt

@@ -15,7 +15,9 @@ import org.thoughtcrime.securesms.linkpreview.LinkPreviewRepository
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewViewModel
 import org.thoughtcrime.securesms.stories.StoryLinkPreviewView
 import org.thoughtcrime.securesms.util.LinkUtil
+import org.thoughtcrime.securesms.util.TextSecurePreferences
 import org.thoughtcrime.securesms.util.ViewUtil
+import org.thoughtcrime.securesms.util.setIncognitoKeyboardEnabled
 import org.thoughtcrime.securesms.util.visible
 
 class TextStoryPostLinkEntryFragment : KeyboardEntryDialogFragment(
@@ -41,6 +43,7 @@ class TextStoryPostLinkEntryFragment : KeyboardEntryDialogFragment(
     val confirmButton: View = view.findViewById(R.id.confirm_button)
     val shareALinkGroup: Group = view.findViewById(R.id.share_a_link_group)
 
+    input.setIncognitoKeyboardEnabled(TextSecurePreferences.isIncognitoKeyboardEnabled(requireContext()))
     input.addTextChangedListener(
       afterTextChanged = {
         val scheme = "https://"

app/src/main/java/org/thoughtcrime/securesms/mediasend/v2/text/TextStoryPostTextEntryFragment.kt

@@ -33,8 +33,10 @@ import org.thoughtcrime.securesms.scribbles.HSVColorSlider.getColor
 import org.thoughtcrime.securesms.scribbles.HSVColorSlider.setColor
 import org.thoughtcrime.securesms.scribbles.HSVColorSlider.setUpForColor
 import org.thoughtcrime.securesms.util.FeatureFlags
+import org.thoughtcrime.securesms.util.TextSecurePreferences
 import org.thoughtcrime.securesms.util.ViewUtil
 import org.thoughtcrime.securesms.util.fragments.findListener
+import org.thoughtcrime.securesms.util.setIncognitoKeyboardEnabled
 import java.util.Locale
 
 /**
@@ -117,6 +119,7 @@ class TextStoryPostTextEntryFragment : KeyboardEntryDialogFragment(
       viewModel.setTemporaryBody(text?.toString() ?: "")
     }
     input.setText(viewModel.getBody())
+    input.setIncognitoKeyboardEnabled(TextSecurePreferences.isIncognitoKeyboardEnabled(requireContext()))
   }
 
   private fun presentHint() {

app/src/main/java/org/thoughtcrime/securesms/util/EditTextExtensions.kt

@@ -0,0 +1,22 @@
+package org.thoughtcrime.securesms.util
+
+import android.widget.EditText
+
+/**
+ * Since this value is only supported on API26+ we hard-code it here
+ *  to avoid issues with older versions. This mirrors the approach
+ *  taken by [org.thoughtcrime.securesms.components.ComposeText].
+ */
+private const val INCOGNITO_KEYBOARD = 16777216
+
+/**
+ * Enables or disables incognito-mode for the keyboard. Note that this might not
+ * be respected by all IMEs.
+ */
+fun EditText.setIncognitoKeyboardEnabled(isIncognitoKeyboardEnabled: Boolean) {
+  imeOptions = if (isIncognitoKeyboardEnabled) {
+    imeOptions or INCOGNITO_KEYBOARD
+  } else {
+    imeOptions and INCOGNITO_KEYBOARD.inv()
+  }
+}