Hightlight partial search results

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

@@ -2567,6 +2567,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         args.putBoolean("filter_archive", intent.getBooleanExtra("filter_archive", true));
         args.putBoolean("found", found);
         args.putString("searched", intent.getStringExtra("searched"));
+        args.putBoolean("searchedPartial", intent.getBooleanExtra("searchedPartial", false));
         args.putBoolean("pinned", intent.getBooleanExtra("pinned", false));
         args.putString("msgid", intent.getStringExtra("msgid"));
 

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

@@ -210,6 +210,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
     private String type;
     private boolean found;
     private String searched;
+    private boolean searchedPartial;
     private ViewType viewType;
     private boolean compact;
     private int zoom;
@@ -3328,7 +3329,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                         HtmlHelper.autoLink(document);
 
                         if (message.ui_found && found && !TextUtils.isEmpty(searched))
-                            HtmlHelper.highlightSearched(context, document, searched);
+                            HtmlHelper.highlightSearched(context, document, searched, searchedPartial);
 
                         boolean overview_mode = prefs.getBoolean("overview_mode", false);
                         HtmlHelper.setViewport(document, overview_mode);
@@ -3357,7 +3358,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                         HtmlHelper.autoLink(document);
 
                         if (message.ui_found && found && !TextUtils.isEmpty(searched))
-                            HtmlHelper.highlightSearched(context, document, searched);
+                            HtmlHelper.highlightSearched(context, document, searched, searchedPartial);
 
                         // Cleanup message
                         document = HtmlHelper.sanitizeView(context, document, show_images);
@@ -4686,7 +4687,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                             .putExtra("lpos", getAdapterPosition())
                             .putExtra("filter_archive", filter_archive)
                             .putExtra("found", viewType == ViewType.SEARCH)
-                            .putExtra("searched", searched);
+                            .putExtra("searched", searched)
+                            .putExtra("searchedPartial", searchedPartial);
 
                     boolean doubletap = prefs.getBoolean("doubletap", false);
 
@@ -8176,7 +8178,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
     }
 
     AdapterMessage(Fragment parentFragment,
-                   String type, boolean found, String searched, ViewType viewType,
+                   String type, boolean found, String searched, boolean searchedPartial, ViewType viewType,
                    boolean compact, int zoom, boolean large_buttons, String sort, boolean ascending,
                    boolean filter_duplicates, boolean filter_trash,
                    final IProperties properties) {
@@ -8184,6 +8186,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
         this.type = type;
         this.found = found;
         this.searched = searched;
+        this.searchedPartial = searchedPartial;
         this.viewType = viewType;
         this.compact = compact;
         this.zoom = zoom;

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

@@ -1283,6 +1283,10 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
             return term;
         }
 
+        boolean isPartial() {
+            return !this.fts;
+        }
+
         String getTitle(Context context) {
             List<String> flags = new ArrayList<>();
             if (with_unseen)

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

@@ -327,6 +327,7 @@ public class FragmentMessages extends FragmentBase
     private boolean filter_archive;
     private boolean found;
     private String searched;
+    private boolean searchedPartial;
     private boolean pinned;
     private String msgid;
     private BoundaryCallbackMessages.SearchCriteria criteria = null;
@@ -471,11 +472,14 @@ public class FragmentMessages extends FragmentBase
         filter_archive = args.getBoolean("filter_archive", true);
         found = args.getBoolean("found", false);
         searched = args.getString("searched");
+        searchedPartial = args.getBoolean("searchedPartial");
         pinned = args.getBoolean("pinned", false);
         msgid = args.getString("msgid");
         criteria = (BoundaryCallbackMessages.SearchCriteria) args.getSerializable("criteria");
-        if (criteria != null)
+        if (criteria != null) {
             searched = criteria.query;
+            searchedPartial = criteria.isPartial();
+        }
         pane = args.getBoolean("pane", false);
         primary = args.getLong("primary", -1);
         connected = args.getBoolean("connected", false);
@@ -1260,7 +1264,7 @@ public class FragmentMessages extends FragmentBase
             filter_trash = false;
 
         adapter = new AdapterMessage(
-                this, type, found, searched, viewType,
+                this, type, found, searched, searchedPartial, viewType,
                 compact, zoom, large_buttons, sort, ascending,
                 filter_duplicates, filter_trash,
                 iProperties);
@@ -8082,6 +8086,7 @@ public class FragmentMessages extends FragmentBase
                         nargs.putInt("lpos", forward ^ reversed ? lpos + 1 : lpos - 1);
                 nargs.putBoolean("found", found);
                 nargs.putString("searched", searched);
+                nargs.putBoolean("searchedPartial", searchedPartial);
                 nargs.putBoolean("pane", pane);
                 nargs.putLong("primary", primary);
                 nargs.putBoolean("connected", connected);

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

@@ -3199,7 +3199,7 @@ public class HtmlHelper {
         return ssb;
     }
 
-    static void highlightSearched(Context context, Document document, String query) {
+    static void highlightSearched(Context context, Document document, String query, boolean partial) {
         try {
             int color = Helper.resolveColor(context, R.attr.colorHighlight);
 
@@ -3213,8 +3213,13 @@ public class HtmlHelper {
                     sb.append(Pattern.quote(w));
                 }
             }
+            if (partial) {
+                sb.insert(0, ".*?(");
+                sb.append(").*?");
+            } else {
                 sb.insert(0, ".*?\\b(");
                 sb.append(")\\b.*?");
+            }
 
             // TODO: match für for fur
             Pattern p = Pattern.compile(sb.toString(), Pattern.DOTALL | Pattern.CASE_INSENSITIVE);