1 files changed, 22 insertions, 0 deletions
diff --git a/java/com/android/dialer/spam/Spam.java b/java/com/android/dialer/spam/Spam.java
index 0229782bf..028bda40a 100644
--- a/java/com/android/dialer/spam/Spam.java
+++ b/java/com/android/dialer/spam/Spam.java
@@ -18,6 +18,7 @@ package com.android.dialer.spam;
 
 import android.preference.Preference;
 import android.preference.Preference.OnPreferenceChangeListener;
+import android.provider.CallLog.Calls;
 import android.support.annotation.Nullable;
 import com.android.dialer.DialerPhoneNumber;
 import com.android.dialer.logging.ContactLookupResult;
@@ -166,4 +167,25 @@ public interface Spam {
       int callType,
       ReportingLocation.Type from,
       ContactSource.Type contactSourceType);
+
+  /**
+   * Given a number's spam status and a call type, determine if the call should be shown as spam.
+   *
+   * <p>We show a call as spam if
+   *
+   * <ul>
+   *   <li>the number is marked as spam, and
+   *   <li>the call is not an outgoing call.
+   * </ul>
+   *
+   * <p>This is because spammers can hide behind a legit number (e.g., a customer service number).
+   * We don't want to show a spam icon when users call it.
+   *
+   * @param isNumberSpam Whether the number is spam.
+   * @param callType One of the types in {@link android.provider.CallLog.Calls#TYPE}.
+   * @return true if the number is spam *and* the call is not an outgoing call.
+   */
+  static boolean shouldShowAsSpam(boolean isNumberSpam, int callType) {
+    return isNumberSpam && (callType != Calls.OUTGOING_TYPE);
+  }
 }