Improved nav accessibility

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

@@ -1871,6 +1871,9 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                     ibInbox.setVisibility(tools && inbox ? View.VISIBLE : View.GONE);
                     ibMore.setVisibility(tools && !outbox ? View.VISIBLE : View.GONE);
                     ibTools.setImageLevel(tools ? 0 : 1);
+                    ibTools.setContentDescription(context.getString(tools ? R.string.title_less : R.string.title_more));
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
+                        ibTools.setTooltipText(ibTools.getContentDescription());
                     ibTools.setVisibility(outbox ? View.GONE : View.VISIBLE);
 
                     ibTrashBottom.setVisibility(button_extra && button_trash && trash ? View.VISIBLE : View.GONE);
@@ -2169,7 +2172,18 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
 
             ibFull.setEnabled(hasWebView);
             ibFull.setImageResource(show_full ? R.drawable.twotone_fullscreen_exit_24 : R.drawable.twotone_fullscreen_24);
+            ibFull.setContentDescription(context.getString(show_full
+                    ? R.string.title_legend_show_reformatted
+                    : R.string.title_legend_show_full));
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
+                ibFull.setTooltipText(ibFull.getContentDescription());
+
             ibImages.setImageResource(show_images ? R.drawable.twotone_article_24 : R.drawable.twotone_image_24);
+            ibImages.setContentDescription(context.getString(show_images
+                    ? R.string.title_legend_hide_images
+                    : R.string.title_legend_show_images));
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
+                ibImages.setTooltipText(ibImages.getContentDescription());
 
             if (show_full) {
                 // Create web view

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

@@ -56,10 +56,10 @@
         android:layout_width="36dp"
         android:layout_height="36dp"
         android:background="?android:attr/selectableItemBackgroundBorderless"
-        android:contentDescription="@string/title_more"
+        android:contentDescription="@string/title_advanced_more"
         android:padding="6dp"
         android:scaleType="fitCenter"
-        android:tooltipText="@string/title_more"
+        android:tooltipText="@string/title_advanced_more"
         app:srcCompat="@drawable/twotone_more_horiz_24"
         tools:ignore="MissingConstraints" />
 

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

@@ -996,6 +996,7 @@
     <string name="title_subscribe">Subscribe</string>
     <string name="title_delete">Delete</string>
     <string name="title_more">More</string>
+    <string name="title_less">Less</string>
     <string name="title_spam">Spam</string>
     <string name="title_move">Move</string>
     <string name="title_copy_btn">Copy</string>
@@ -1508,7 +1509,9 @@
     <string name="title_legend_create_rule">Create rule</string>
     <string name="title_legend_show_unsubscribe">Unsubscribe from list</string>
     <string name="title_legend_show_images">Show images</string>
+    <string name="title_legend_hide_images">Hide images</string>
     <string name="title_legend_show_full">Show original message</string>
+    <string name="title_legend_show_reformatted">Show reformatted message</string>
     <string name="title_legend_edit">Edit</string>
     <string name="title_legend_default_color">Default color</string>
     <string name="title_legend_close_hint">Close hint</string>