Added encryption toggle to compose action bar

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -193,6 +193,7 @@ public class FragmentCompose extends FragmentBase {
 
     private boolean prefix_once = false;
     private boolean monospaced = false;
+    private boolean encrypt = false;
     private boolean media = true;
     private boolean compact = false;
 
@@ -910,6 +911,7 @@ public class FragmentCompose extends FragmentBase {
     public void onPrepareOptionsMenu(Menu menu) {
         super.onPrepareOptionsMenu(menu);
 
+        menu.findItem(R.id.menu_encrypt).setVisible(state == State.LOADED);
         menu.findItem(R.id.menu_zoom).setVisible(state == State.LOADED);
         menu.findItem(R.id.menu_media).setVisible(state == State.LOADED);
         menu.findItem(R.id.menu_compact).setVisible(state == State.LOADED);
@@ -918,6 +920,7 @@ public class FragmentCompose extends FragmentBase {
         menu.findItem(R.id.menu_answer).setVisible(state == State.LOADED);
         menu.findItem(R.id.menu_send).setVisible(state == State.LOADED);
 
+        menu.findItem(R.id.menu_encrypt).setEnabled(!busy);
         menu.findItem(R.id.menu_zoom).setEnabled(!busy);
         menu.findItem(R.id.menu_media).setEnabled(!busy);
         menu.findItem(R.id.menu_compact).setEnabled(!busy);
@@ -926,6 +929,7 @@ public class FragmentCompose extends FragmentBase {
         menu.findItem(R.id.menu_answer).setEnabled(!busy);
         menu.findItem(R.id.menu_send).setEnabled(!busy);
 
+        menu.findItem(R.id.menu_encrypt).setIcon(encrypt ? R.drawable.baseline_lock_24 : R.drawable.baseline_no_encryption_24);
         menu.findItem(R.id.menu_media).setChecked(media);
         menu.findItem(R.id.menu_compact).setChecked(compact);
     }
@@ -937,6 +941,9 @@ public class FragmentCompose extends FragmentBase {
                 if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
                     onExit();
                 return true;
+            case R.id.menu_encrypt:
+                onMenuEncrypt();
+                return true;
             case R.id.menu_zoom:
                 onMenuZoom();
                 return true;
@@ -977,6 +984,33 @@ public class FragmentCompose extends FragmentBase {
         });
     }
 
+    private void onMenuEncrypt() {
+        encrypt = !encrypt;
+        getActivity().invalidateOptionsMenu();
+
+        Bundle args = new Bundle();
+        args.putLong("id", working);
+        args.putBoolean("encrypt", encrypt);
+
+        new SimpleTask<Void>() {
+            @Override
+            protected Void onExecute(Context context, Bundle args) {
+                long id = args.getLong("id");
+                boolean encrypt = args.getBoolean("encrypt");
+
+                DB db = DB.getInstance(context);
+                db.message().setMessageEncrypt(id, encrypt);
+
+                return null;
+            }
+
+            @Override
+            protected void onException(Bundle args, Throwable ex) {
+                Helper.unexpectedError(getFragmentManager(), ex);
+            }
+        }.execute(this, args, "compose:encrypt");
+    }
+
     private void onMenuZoom() {
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
         boolean compact = prefs.getBoolean("compact", false);
@@ -2399,11 +2433,13 @@ public class FragmentCompose extends FragmentBase {
 
         @Override
         protected void onExecuted(Bundle args, final DraftData data) {
-            working = data.draft.id;
-
             final String action = getArguments().getString("action");
             Log.i("Loaded draft id=" + data.draft.id + " action=" + action);
 
+            working = data.draft.id;
+            encrypt = (data.draft.encrypt != null && data.draft.encrypt);
+            getActivity().invalidateOptionsMenu();
+
             // Show identities
             AdapterIdentitySelect iadapter = new AdapterIdentitySelect(getContext(), data.identities);
             spIdentity.setAdapter(iadapter);
@@ -2436,8 +2472,6 @@ public class FragmentCompose extends FragmentBase {
             bottom_navigation.getMenu().findItem(R.id.action_redo).setVisible(
                     data.draft.revision != null && !data.draft.revision.equals(data.draft.revisions));
 
-            getActivity().invalidateOptionsMenu();
-
             if (args.getBoolean("incomplete"))
                 Snackbar.make(view, R.string.title_attachments_incomplete, Snackbar.LENGTH_LONG).show();
 
@@ -2485,6 +2519,9 @@ public class FragmentCompose extends FragmentBase {
                     if (draft == null || draft.ui_hide)
                         finish();
                     else {
+                        encrypt = (draft.encrypt != null && draft.encrypt);
+                        getActivity().invalidateOptionsMenu();
+
                         Log.i("Draft content=" + draft.content);
                         if (draft.content && state == State.NONE)
                             showDraft(draft);

app/src/main/res/menu/menu_compose.xml

@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/menu_encrypt"
+        android:icon="@drawable/baseline_lock_24"
+        android:title="@string/title_encrypt"
+        app:showAsAction="always" />
+
     <item
         android:id="@+id/menu_zoom"
         android:icon="@drawable/baseline_format_size_24"