PreferenceSummaryHelper: new method getPreferenceTitle - to get title from...

PreferenceSummaryHelper: new method getPreferenceTitle - to get title from title and summary resource string.

app/src/main/java/com/xabber/android/ui/helper/PreferenceSummaryHelper.java

@@ -26,25 +26,47 @@ import android.preference.PreferenceGroup;
  */
 public final class PreferenceSummaryHelper {
 
-	private PreferenceSummaryHelper() {
-	}
-
-	public static void updateSummary(PreferenceGroup group) {
-		for (int index = 0; index < group.getPreferenceCount(); index++) {
-			Preference preference = group.getPreference(index);
-			if (preference instanceof PreferenceGroup)
-				updateSummary((PreferenceGroup) preference);
-			String title = preference.getTitle().toString();
-			int delimeter = title.indexOf("\n");
-			if (delimeter == -1)
-				continue;
-			preference.setTitle(title.substring(0, delimeter));
-			if (preference instanceof DialogPreference)
-				((DialogPreference) preference).setDialogTitle(preference
-						.getTitle());
-			preference
-					.setSummary(title.substring(delimeter + 1, title.length()));
-		}
-	}
+    private PreferenceSummaryHelper() {
+    }
+
+    public static void updateSummary(PreferenceGroup group) {
+        for (int index = 0; index < group.getPreferenceCount(); index++) {
+            Preference preference = group.getPreference(index);
+            if (preference instanceof PreferenceGroup) {
+                updateSummary((PreferenceGroup) preference);
+            }
+            String titleAndSummary = preference.getTitle().toString();
+
+            if (!isTitleAndSummary(titleAndSummary)) {
+                continue;
+            }
+
+            preference.setTitle(getPreferenceTitle(titleAndSummary));
+            if (preference instanceof DialogPreference) {
+                ((DialogPreference) preference).setDialogTitle(preference.getTitle());
+            }
+            preference.setSummary(getPreferenceSummary(titleAndSummary));
+        }
+    }
+
+    private static boolean isTitleAndSummary(String titleAndSummary) {
+        return titleAndSummary.contains("\n");
+    }
+
+    public static String getPreferenceTitle(String titleAndSummary) {
+        int delimiter = titleAndSummary.indexOf("\n");
+        if (delimiter == -1) {
+            return titleAndSummary;
+        }
+        return titleAndSummary.substring(0, delimiter);
+    }
+
+    private static String getPreferenceSummary(String titleAndSummary) {
+        int delimiter = titleAndSummary.indexOf("\n");
+        if (delimiter == -1) {
+            return "";
+        }
+        return titleAndSummary.substring(delimiter + 1, titleAndSummary.length());
+    }
 
 }