Refactoring

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

@@ -74,7 +74,6 @@ import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.SpannableStringBuilder;
 import android.text.Spanned;
-import android.text.TextPaint;
 import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.text.method.ArrowKeyMovementMethod;
@@ -85,7 +84,6 @@ import android.text.style.ImageSpan;
 import android.text.style.ParagraphStyle;
 import android.text.style.QuoteSpan;
 import android.text.style.RelativeSizeSpan;
-import android.text.style.SuggestionSpan;
 import android.text.style.URLSpan;
 import android.util.LogPrinter;
 import android.util.Pair;
@@ -2599,25 +2597,7 @@ public class FragmentCompose extends FragmentBase {
                     return;
                 }
 
-                Editable edit = etBody.getText();
-                if (edit == null)
-                    return;
-
-                // https://developer.android.com/reference/android/text/style/SuggestionSpan
-                for (SuggestionSpanEx span : edit.getSpans(0, edit.length(), SuggestionSpanEx.class)) {
-                    Log.i("LT removing=" + span);
-                    edit.removeSpan(span);
-                }
-
-                for (LanguageTool.Suggestion suggestion : suggestions) {
-                    Log.i("LT adding=" + suggestion);
-                    SuggestionSpan span = new SuggestionSpanEx(getContext(),
-                            suggestion.replacements.toArray(new String[0]),
-                            SuggestionSpan.FLAG_MISSPELLED);
-                    int start = suggestion.offset;
-                    int end = start + suggestion.length;
-                    edit.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
-                }
+                LanguageTool.applySuggestions(etBody, suggestions);
             }
 
             @Override
@@ -2636,20 +2616,6 @@ public class FragmentCompose extends FragmentBase {
         }.execute(this, args, "compose:lt");
     }
 
-    private static class SuggestionSpanEx extends SuggestionSpan {
-        private final int textColorHighlight;
-
-        public SuggestionSpanEx(Context context, String[] suggestions, int flags) {
-            super(context, suggestions, flags);
-            textColorHighlight = Helper.resolveColor(context, android.R.attr.textColorHighlight);
-        }
-
-        @Override
-        public void updateDrawState(TextPaint tp) {
-            tp.bgColor = textColorHighlight;
-        }
-    }
-
     private boolean onActionStyle(int action, View anchor) {
         Log.i("Style action=" + action);
         return StyleHelper.apply(action, getViewLifecycleOwner(), anchor, etBody);

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

@@ -21,6 +21,11 @@ package eu.faircode.email;
 
 import android.content.Context;
 import android.content.SharedPreferences;
+import android.text.Editable;
+import android.text.Spanned;
+import android.text.TextPaint;
+import android.text.style.SuggestionSpan;
+import android.widget.EditText;
 
 import androidx.preference.PreferenceManager;
 
@@ -146,6 +151,28 @@ public class LanguageTool {
         }
     }
 
+    static void applySuggestions(EditText etBody, List<Suggestion> suggestions) {
+        Editable edit = etBody.getText();
+        if (edit == null)
+            return;
+
+        // https://developer.android.com/reference/android/text/style/SuggestionSpan
+        for (SuggestionSpanEx span : edit.getSpans(0, edit.length(), SuggestionSpanEx.class)) {
+            Log.i("LT removing=" + span);
+            edit.removeSpan(span);
+        }
+
+        for (LanguageTool.Suggestion suggestion : suggestions) {
+            Log.i("LT adding=" + suggestion);
+            SuggestionSpan span = new SuggestionSpanEx(etBody.getContext(),
+                    suggestion.replacements.toArray(new String[0]),
+                    SuggestionSpan.FLAG_MISSPELLED);
+            int start = suggestion.offset;
+            int end = start + suggestion.length;
+            edit.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+    }
+
     static class Suggestion {
         String title; // shortMessage
         String description; // message
@@ -158,4 +185,18 @@ public class LanguageTool {
             return title;
         }
     }
+
+    private static class SuggestionSpanEx extends SuggestionSpan {
+        private final int textColorHighlight;
+
+        public SuggestionSpanEx(Context context, String[] suggestions, int flags) {
+            super(context, suggestions, flags);
+            textColorHighlight = Helper.resolveColor(context, android.R.attr.textColorHighlight);
+        }
+
+        @Override
+        public void updateDrawState(TextPaint tp) {
+            tp.bgColor = textColorHighlight;
+        }
+    }
 }