Add new SystemApi methods for mainline

Add new SystemApi methods for Telecom to call in lieu of the old @hide
methods. Also moved CallerInfo and CallerInfoAsyncQuery to Telecom
because there are no more users in Telephony.

Bug: 141576016
Test: CTS
Change-Id: I458ba6bcfc03db72c0419b0cab2f0d0adfa971d4
Merged-In: I458ba6bcfc03db72c0419b0cab2f0d0adfa971d4
diff --git a/telecomm/java/android/telecom/CallerInfo.java b/telecomm/java/android/telecom/CallerInfo.java
new file mode 100644
index 0000000..a5d25e2
--- /dev/null
+++ b/telecomm/java/android/telecom/CallerInfo.java
@@ -0,0 +1,782 @@
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telecom;
+
+import android.annotation.Nullable;
+import android.annotation.UnsupportedAppUsage;
+import android.content.ComponentName;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.drawable.Drawable;
+import android.location.Country;
+import android.location.CountryDetector;
+import android.net.Uri;
+import android.provider.ContactsContract.CommonDataKinds.Phone;
+import android.provider.ContactsContract.Contacts;
+import android.provider.ContactsContract.Data;
+import android.provider.ContactsContract.PhoneLookup;
+import android.provider.ContactsContract.RawContacts;
+import android.telephony.PhoneNumberUtils;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+
+import com.android.i18n.phonenumbers.NumberParseException;
+import com.android.i18n.phonenumbers.PhoneNumberUtil;
+import com.android.i18n.phonenumbers.Phonenumber.PhoneNumber;
+import com.android.i18n.phonenumbers.geocoding.PhoneNumberOfflineGeocoder;
+
+import com.android.internal.annotations.VisibleForTesting;
+import java.util.Locale;
+
+
+/**
+ * Looks up caller information for the given phone number.
+ *
+ * {@hide}
+ */
+public class CallerInfo {
+    private static final String TAG = "CallerInfo";
+    private static final boolean VDBG = Log.VERBOSE;
+
+    /** @hide */
+    public static final long USER_TYPE_CURRENT = 0;
+    /** @hide */
+    public static final long USER_TYPE_WORK = 1;
+
+    /**
+     * Please note that, any one of these member variables can be null,
+     * and any accesses to them should be prepared to handle such a case.
+     *
+     * Also, it is implied that phoneNumber is more often populated than
+     * name is, (think of calls being dialed/received using numbers where
+     * names are not known to the device), so phoneNumber should serve as
+     * a dependable fallback when name is unavailable.
+     *
+     * One other detail here is that this CallerInfo object reflects
+     * information found on a connection, it is an OUTPUT that serves
+     * mainly to display information to the user.  In no way is this object
+     * used as input to make a connection, so we can choose to display
+     * whatever human-readable text makes sense to the user for a
+     * connection.  This is especially relevant for the phone number field,
+     * since it is the one field that is most likely exposed to the user.
+     *
+     * As an example:
+     *   1. User dials "911"
+     *   2. Device recognizes that this is an emergency number
+     *   3. We use the "Emergency Number" string instead of "911" in the
+     *     phoneNumber field.
+     *
+     * What we're really doing here is treating phoneNumber as an essential
+     * field here, NOT name.  We're NOT always guaranteed to have a name
+     * for a connection, but the number should be displayable.
+     */
+    private String name;
+    private String phoneNumber;
+    /** @hide */
+    public String normalizedNumber;
+    /** @hide */
+    public String geoDescription;
+    /** @hide */
+    public String cnapName;
+    /** @hide */
+    public int numberPresentation;
+    /** @hide */
+    public int namePresentation;
+    /** @hide */
+    public boolean contactExists;
+    /** @hide */
+    public String phoneLabel;
+    /**
+     * Split up the phoneLabel into number type and label name.
+     * @hide
+     */
+    @UnsupportedAppUsage
+    public int    numberType;
+    /** @hide */
+    @UnsupportedAppUsage
+    public String numberLabel;
+    /** @hide */
+    public int photoResource;
+
+    // Contact ID, which will be 0 if a contact comes from the corp CP2.
+    private long contactIdOrZero;
+    /** @hide */
+    public boolean needUpdate;
+    /** @hide */
+    public Uri contactRefUri;
+    /** @hide */
+    public String lookupKey;
+    /** @hide */
+    public ComponentName preferredPhoneAccountComponent;
+    /** @hide */
+    public String preferredPhoneAccountId;
+    /** @hide */
+    public long userType;
+
+    /**
+     * Contact display photo URI.  If a contact has no display photo but a thumbnail, it'll be
+     * the thumbnail URI instead.
+     */
+    private Uri contactDisplayPhotoUri;
+
+    // fields to hold individual contact preference data,
+    // including the send to voicemail flag and the ringtone
+    // uri reference.
+    /** @hide */
+    public Uri contactRingtoneUri;
+    /** @hide */
+    public boolean shouldSendToVoicemail;
+
+    /**
+     * Drawable representing the caller image.  This is essentially
+     * a cache for the image data tied into the connection /
+     * callerinfo object.
+     *
+     * This might be a high resolution picture which is more suitable
+     * for full-screen image view than for smaller icons used in some
+     * kinds of notifications.
+     *
+     * The {@link #isCachedPhotoCurrent} flag indicates if the image
+     * data needs to be reloaded.
+     *
+     * @hide
+     */
+    public Drawable cachedPhoto;
+    /**
+     * Bitmap representing the caller image which has possibly lower
+     * resolution than {@link #cachedPhoto} and thus more suitable for
+     * icons (like notification icons).
+     *
+     * In usual cases this is just down-scaled image of {@link #cachedPhoto}.
+     * If the down-scaling fails, this will just become null.
+     *
+     * The {@link #isCachedPhotoCurrent} flag indicates if the image
+     * data needs to be reloaded.
+     *
+     * @hide
+     */
+    public Bitmap cachedPhotoIcon;
+    /**
+     * Boolean which indicates if {@link #cachedPhoto} and
+     * {@link #cachedPhotoIcon} is fresh enough. If it is false,
+     * those images aren't pointing to valid objects.
+     *
+     * @hide
+     */
+    public boolean isCachedPhotoCurrent;
+
+    private boolean mIsEmergency;
+    private boolean mIsVoiceMail;
+
+    /** @hide */
+    @UnsupportedAppUsage
+    public CallerInfo() {
+        // TODO: Move all the basic initialization here?
+        mIsEmergency = false;
+        mIsVoiceMail = false;
+        userType = USER_TYPE_CURRENT;
+    }
+
+    /**
+     * getCallerInfo given a Cursor.
+     * @param context the context used to retrieve string constants
+     * @param contactRef the URI to attach to this CallerInfo object
+     * @param cursor the first object in the cursor is used to build the CallerInfo object.
+     * @return the CallerInfo which contains the caller id for the given
+     * number. The returned CallerInfo is null if no number is supplied.
+     *
+     * @hide
+     */
+    public static CallerInfo getCallerInfo(Context context, Uri contactRef, Cursor cursor) {
+        CallerInfo info = new CallerInfo();
+        info.photoResource = 0;
+        info.phoneLabel = null;
+        info.numberType = 0;
+        info.numberLabel = null;
+        info.cachedPhoto = null;
+        info.isCachedPhotoCurrent = false;
+        info.contactExists = false;
+        info.userType = USER_TYPE_CURRENT;
+
+        if (VDBG) Log.v(TAG, "getCallerInfo() based on cursor...");
+
+        if (cursor != null) {
+            if (cursor.moveToFirst()) {
+                // TODO: photo_id is always available but not taken
+                // care of here. Maybe we should store it in the
+                // CallerInfo object as well.
+
+                int columnIndex;
+
+                // Look for the name
+                columnIndex = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME);
+                if (columnIndex != -1) {
+                    info.name = cursor.getString(columnIndex);
+                }
+
+                // Look for the number
+                columnIndex = cursor.getColumnIndex(PhoneLookup.NUMBER);
+                if (columnIndex != -1) {
+                    info.phoneNumber = cursor.getString(columnIndex);
+                }
+
+                // Look for the normalized number
+                columnIndex = cursor.getColumnIndex(PhoneLookup.NORMALIZED_NUMBER);
+                if (columnIndex != -1) {
+                    info.normalizedNumber = cursor.getString(columnIndex);
+                }
+
+                // Look for the label/type combo
+                columnIndex = cursor.getColumnIndex(PhoneLookup.LABEL);
+                if (columnIndex != -1) {
+                    int typeColumnIndex = cursor.getColumnIndex(PhoneLookup.TYPE);
+                    if (typeColumnIndex != -1) {
+                        info.numberType = cursor.getInt(typeColumnIndex);
+                        info.numberLabel = cursor.getString(columnIndex);
+                        info.phoneLabel = Phone.getDisplayLabel(context,
+                                info.numberType, info.numberLabel)
+                                .toString();
+                    }
+                }
+
+                // Look for the person_id.
+                columnIndex = getColumnIndexForPersonId(contactRef, cursor);
+                if (columnIndex != -1) {
+                    final long contactId = cursor.getLong(columnIndex);
+                    if (contactId != 0 && !Contacts.isEnterpriseContactId(contactId)) {
+                        info.contactIdOrZero = contactId;
+                        if (VDBG) {
+                            Log.v(TAG, "==> got info.contactIdOrZero: " + info.contactIdOrZero);
+                        }
+                    }
+                    if (Contacts.isEnterpriseContactId(contactId)) {
+                        info.userType = USER_TYPE_WORK;
+                    }
+                } else {
+                    // No valid columnIndex, so we can't look up person_id.
+                    Log.w(TAG, "Couldn't find contact_id column for " + contactRef);
+                    // Watch out: this means that anything that depends on
+                    // person_id will be broken (like contact photo lookups in
+                    // the in-call UI, for example.)
+                }
+
+                // Contact lookupKey
+                columnIndex = cursor.getColumnIndex(PhoneLookup.LOOKUP_KEY);
+                if (columnIndex != -1) {
+                    info.lookupKey = cursor.getString(columnIndex);
+                }
+
+                // Display photo URI.
+                columnIndex = cursor.getColumnIndex(PhoneLookup.PHOTO_URI);
+                if ((columnIndex != -1) && (cursor.getString(columnIndex) != null)) {
+                    info.contactDisplayPhotoUri = Uri.parse(cursor.getString(columnIndex));
+                } else {
+                    info.contactDisplayPhotoUri = null;
+                }
+
+                columnIndex = cursor.getColumnIndex(Data.PREFERRED_PHONE_ACCOUNT_COMPONENT_NAME);
+                if ((columnIndex != -1) && (cursor.getString(columnIndex) != null)) {
+                    info.preferredPhoneAccountComponent =
+                            ComponentName.unflattenFromString(cursor.getString(columnIndex));
+                }
+
+                columnIndex = cursor.getColumnIndex(Data.PREFERRED_PHONE_ACCOUNT_ID);
+                if ((columnIndex != -1) && (cursor.getString(columnIndex) != null)) {
+                    info.preferredPhoneAccountId = cursor.getString(columnIndex);
+                }
+
+                // look for the custom ringtone, create from the string stored
+                // in the database.
+                // An empty string ("") in the database indicates a silent ringtone,
+                // and we set contactRingtoneUri = Uri.EMPTY, so that no ringtone will be played.
+                // {null} in the database indicates the default ringtone,
+                // and we set contactRingtoneUri = null, so that default ringtone will be played.
+                columnIndex = cursor.getColumnIndex(PhoneLookup.CUSTOM_RINGTONE);
+                if ((columnIndex != -1) && (cursor.getString(columnIndex) != null)) {
+                    if (TextUtils.isEmpty(cursor.getString(columnIndex))) {
+                        info.contactRingtoneUri = Uri.EMPTY;
+                    } else {
+                        info.contactRingtoneUri = Uri.parse(cursor.getString(columnIndex));
+                    }
+                } else {
+                    info.contactRingtoneUri = null;
+                }
+
+                // look for the send to voicemail flag, set it to true only
+                // under certain circumstances.
+                columnIndex = cursor.getColumnIndex(PhoneLookup.SEND_TO_VOICEMAIL);
+                info.shouldSendToVoicemail = (columnIndex != -1) &&
+                        ((cursor.getInt(columnIndex)) == 1);
+                info.contactExists = true;
+            }
+            cursor.close();
+            cursor = null;
+        }
+
+        info.needUpdate = false;
+        info.name = normalize(info.name);
+        info.contactRefUri = contactRef;
+
+        return info;
+    }
+
+    /**
+     * getCallerInfo given a URI, look up in the call-log database
+     * for the uri unique key.
+     * @param context the context used to get the ContentResolver
+     * @param contactRef the URI used to lookup caller id
+     * @return the CallerInfo which contains the caller id for the given
+     * number. The returned CallerInfo is null if no number is supplied.
+     *
+     * @hide
+     */
+    @UnsupportedAppUsage
+    public static CallerInfo getCallerInfo(Context context, Uri contactRef) {
+        CallerInfo info = null;
+        ContentResolver cr = CallerInfoAsyncQuery.getCurrentProfileContentResolver(context);
+        if (cr != null) {
+            try {
+                info = getCallerInfo(context, contactRef,
+                        cr.query(contactRef, null, null, null, null));
+            } catch (RuntimeException re) {
+                Log.e(TAG, re, "Error getting caller info.");
+            }
+        }
+        return info;
+    }
+
+    /**
+     * getCallerInfo given a phone number, look up in the call-log database
+     * for the matching caller id info.
+     * @param context the context used to get the ContentResolver
+     * @param number the phone number used to lookup caller id
+     * @return the CallerInfo which contains the caller id for the given
+     * number. The returned CallerInfo is null if no number is supplied. If
+     * a matching number is not found, then a generic caller info is returned,
+     * with all relevant fields empty or null.
+     *
+     * @hide
+     */
+    @UnsupportedAppUsage
+    public static CallerInfo getCallerInfo(Context context, String number) {
+        if (VDBG) Log.v(TAG, "getCallerInfo() based on number...");
+
+        int subId = SubscriptionManager.getDefaultSubscriptionId();
+        return getCallerInfo(context, number, subId);
+    }
+
+    /**
+     * getCallerInfo given a phone number and subscription, look up in the call-log database
+     * for the matching caller id info.
+     * @param context the context used to get the ContentResolver
+     * @param number the phone number used to lookup caller id
+     * @param subId the subscription for checking for if voice mail number or not
+     * @return the CallerInfo which contains the caller id for the given
+     * number. The returned CallerInfo is null if no number is supplied. If
+     * a matching number is not found, then a generic caller info is returned,
+     * with all relevant fields empty or null.
+     *
+     * @hide
+     */
+    @UnsupportedAppUsage
+    public static CallerInfo getCallerInfo(Context context, String number, int subId) {
+
+        if (TextUtils.isEmpty(number)) {
+            return null;
+        }
+
+        // Change the callerInfo number ONLY if it is an emergency number
+        // or if it is the voicemail number.  If it is either, take a
+        // shortcut and skip the query.
+        if (PhoneNumberUtils.isLocalEmergencyNumber(context, number)) {
+            return new CallerInfo().markAsEmergency(context);
+        } else if (PhoneNumberUtils.isVoiceMailNumber(null, subId, number)) {
+            return new CallerInfo().markAsVoiceMail(context, subId);
+        }
+
+        Uri contactUri = Uri.withAppendedPath(PhoneLookup.ENTERPRISE_CONTENT_FILTER_URI,
+                Uri.encode(number));
+
+        CallerInfo info = getCallerInfo(context, contactUri);
+        info = doSecondaryLookupIfNecessary(context, number, info);
+
+        // if no query results were returned with a viable number,
+        // fill in the original number value we used to query with.
+        if (TextUtils.isEmpty(info.phoneNumber)) {
+            info.phoneNumber = number;
+        }
+
+        return info;
+    }
+
+    /**
+     * @return Name assocaited with this caller.
+     */
+    @Nullable
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Set caller Info Name.
+     * @param name caller Info Name
+     *
+     * @hide
+     */
+    public void setName(@Nullable String name) {
+        this.name = name;
+    }
+
+    /**
+     * @return Phone number assocaited with this caller.
+     */
+    @Nullable
+    public String getPhoneNumber() {
+        return phoneNumber;
+    }
+
+    /** @hide */
+    public void setPhoneNumber(String number) {
+        phoneNumber = number;
+    }
+
+    /**
+     * @return Contact ID, which will be 0 if a contact comes from the corp Contacts Provider.
+     */
+    public long getContactId() {
+      return contactIdOrZero;
+    }
+
+    /**
+     * @return Contact display photo URI. If a contact has no display photo but a thumbnail,
+     * it'll the thumbnail URI instead.
+     */
+    @Nullable
+    public Uri getContactDisplayPhotoUri() {
+      return contactDisplayPhotoUri;
+    }
+
+    /** @hide */
+    @VisibleForTesting
+    public void SetContactDisplayPhotoUri(Uri photoUri) {
+        contactDisplayPhotoUri = photoUri;
+    }
+
+    /**
+     * Performs another lookup if previous lookup fails and it's a SIP call
+     * and the peer's username is all numeric. Look up the username as it
+     * could be a PSTN number in the contact database.
+     *
+     * @param context the query context
+     * @param number the original phone number, could be a SIP URI
+     * @param previousResult the result of previous lookup
+     * @return previousResult if it's not the case
+     */
+    static CallerInfo doSecondaryLookupIfNecessary(Context context,
+            String number, CallerInfo previousResult) {
+        if (!previousResult.contactExists
+                && PhoneNumberUtils.isUriNumber(number)) {
+            String username = PhoneNumberUtils.getUsernameFromUriNumber(number);
+            if (PhoneNumberUtils.isGlobalPhoneNumber(username)) {
+                previousResult = getCallerInfo(context,
+                        Uri.withAppendedPath(PhoneLookup.ENTERPRISE_CONTENT_FILTER_URI,
+                                Uri.encode(username)));
+            }
+        }
+        return previousResult;
+    }
+
+    // Accessors
+
+    /**
+     * @return true if the caller info is an emergency number.
+     * @hide
+     */
+    public boolean isEmergencyNumber() {
+        return mIsEmergency;
+    }
+
+    /**
+     * @return true if the caller info is a voicemail number.
+     * @hide
+     */
+    public boolean isVoiceMailNumber() {
+        return mIsVoiceMail;
+    }
+
+    /**
+     * Mark this CallerInfo as an emergency call.
+     * @param context To lookup the localized 'Emergency Number' string.
+     * @return this instance.
+     */
+    // TODO: Note we're setting the phone number here (refer to
+    // javadoc comments at the top of CallerInfo class) to a localized
+    // string 'Emergency Number'. This is pretty bad because we are
+    // making UI work here instead of just packaging the data. We
+    // should set the phone number to the dialed number and name to
+    // 'Emergency Number' and let the UI make the decision about what
+    // should be displayed.
+    /* package */ CallerInfo markAsEmergency(Context context) {
+        phoneNumber = context.getString(
+            com.android.internal.R.string.emergency_call_dialog_number_for_display);
+        photoResource = com.android.internal.R.drawable.picture_emergency;
+        mIsEmergency = true;
+        return this;
+    }
+
+
+    /* package */ CallerInfo markAsVoiceMail(Context context, int subId) {
+        mIsVoiceMail = true;
+
+        try {
+            phoneNumber = context.getSystemService(TelephonyManager.class)
+                    .createForSubscriptionId(subId)
+                    .getVoiceMailAlphaTag();
+        } catch (SecurityException se) {
+            // Should never happen: if this process does not have
+            // permission to retrieve VM tag, it should not have
+            // permission to retrieve VM number and would not call
+            // this method.
+            // Leave phoneNumber untouched.
+            Log.e(TAG, se, "Cannot access VoiceMail.");
+        }
+        // TODO: There is no voicemail picture?
+        // FIXME: FIND ANOTHER ICON
+        // photoResource = android.R.drawable.badge_voicemail;
+        return this;
+    }
+
+    private static String normalize(String s) {
+        if (s == null || s.length() > 0) {
+            return s;
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Returns the column index to use to find the "person_id" field in
+     * the specified cursor, based on the contact URI that was originally
+     * queried.
+     *
+     * This is a helper function for the getCallerInfo() method that takes
+     * a Cursor.  Looking up the person_id is nontrivial (compared to all
+     * the other CallerInfo fields) since the column we need to use
+     * depends on what query we originally ran.
+     *
+     * Watch out: be sure to not do any database access in this method, since
+     * it's run from the UI thread (see comments below for more info.)
+     *
+     * @return the columnIndex to use (with cursor.getLong()) to get the
+     * person_id, or -1 if we couldn't figure out what colum to use.
+     *
+     * TODO: Add a unittest for this method.  (This is a little tricky to
+     * test, since we'll need a live contacts database to test against,
+     * preloaded with at least some phone numbers and SIP addresses.  And
+     * we'll probably have to hardcode the column indexes we expect, so
+     * the test might break whenever the contacts schema changes.  But we
+     * can at least make sure we handle all the URI patterns we claim to,
+     * and that the mime types match what we expect...)
+     */
+    private static int getColumnIndexForPersonId(Uri contactRef, Cursor cursor) {
+        // TODO: This is pretty ugly now, see bug 2269240 for
+        // more details. The column to use depends upon the type of URL:
+        // - content://com.android.contacts/data/phones ==> use the "contact_id" column
+        // - content://com.android.contacts/phone_lookup ==> use the "_ID" column
+        // - content://com.android.contacts/data ==> use the "contact_id" column
+        // If it's none of the above, we leave columnIndex=-1 which means
+        // that the person_id field will be left unset.
+        //
+        // The logic here *used* to be based on the mime type of contactRef
+        // (for example Phone.CONTENT_ITEM_TYPE would tell us to use the
+        // RawContacts.CONTACT_ID column).  But looking up the mime type requires
+        // a call to context.getContentResolver().getType(contactRef), which
+        // isn't safe to do from the UI thread since it can cause an ANR if
+        // the contacts provider is slow or blocked (like during a sync.)
+        //
+        // So instead, figure out the column to use for person_id by just
+        // looking at the URI itself.
+
+        if (VDBG) Log.v(TAG, "- getColumnIndexForPersonId: contactRef URI = '"
+                        + contactRef + "'...");
+        // Warning: Do not enable the following logging (due to ANR risk.)
+        // if (VDBG) Log.v(TAG, "- MIME type: "
+        //                 + context.getContentResolver().getType(contactRef));
+
+        String url = contactRef.toString();
+        String columnName = null;
+        if (url.startsWith("content://com.android.contacts/data/phones")) {
+            // Direct lookup in the Phone table.
+            // MIME type: Phone.CONTENT_ITEM_TYPE (= "vnd.android.cursor.item/phone_v2")
+            if (VDBG) Log.v(TAG, "'data/phones' URI; using RawContacts.CONTACT_ID");
+            columnName = RawContacts.CONTACT_ID;
+        } else if (url.startsWith("content://com.android.contacts/data")) {
+            // Direct lookup in the Data table.
+            // MIME type: Data.CONTENT_TYPE (= "vnd.android.cursor.dir/data")
+            if (VDBG) Log.v(TAG, "'data' URI; using Data.CONTACT_ID");
+            // (Note Data.CONTACT_ID and RawContacts.CONTACT_ID are equivalent.)
+            columnName = Data.CONTACT_ID;
+        } else if (url.startsWith("content://com.android.contacts/phone_lookup")) {
+            // Lookup in the PhoneLookup table, which provides "fuzzy matching"
+            // for phone numbers.
+            // MIME type: PhoneLookup.CONTENT_TYPE (= "vnd.android.cursor.dir/phone_lookup")
+            if (VDBG) Log.v(TAG, "'phone_lookup' URI; using PhoneLookup._ID");
+            columnName = PhoneLookup._ID;
+        } else {
+            Log.w(TAG, "Unexpected prefix for contactRef '" + url + "'");
+        }
+        int columnIndex = (columnName != null) ? cursor.getColumnIndex(columnName) : -1;
+        if (VDBG) Log.v(TAG, "==> Using column '" + columnName
+                        + "' (columnIndex = " + columnIndex + ") for person_id lookup...");
+        return columnIndex;
+    }
+
+    /**
+     * Updates this CallerInfo's geoDescription field, based on the raw
+     * phone number in the phoneNumber field.
+     *
+     * (Note that the various getCallerInfo() methods do *not* set the
+     * geoDescription automatically; you need to call this method
+     * explicitly to get it.)
+     *
+     * @param context the context used to look up the current locale / country
+     * @param fallbackNumber if this CallerInfo's phoneNumber field is empty,
+     *        this specifies a fallback number to use instead.
+     * @hide
+     */
+    public void updateGeoDescription(Context context, String fallbackNumber) {
+        String number = TextUtils.isEmpty(phoneNumber) ? fallbackNumber : phoneNumber;
+        geoDescription = getGeoDescription(context, number);
+    }
+
+    /**
+     * @return a geographical description string for the specified number.
+     * @see com.android.i18n.phonenumbers.PhoneNumberOfflineGeocoder
+     *
+     * @hide
+     */
+    public static String getGeoDescription(Context context, String number) {
+        if (VDBG) Log.v(TAG, "getGeoDescription('" + number + "')...");
+
+        if (TextUtils.isEmpty(number)) {
+            return null;
+        }
+
+        PhoneNumberUtil util = PhoneNumberUtil.getInstance();
+        PhoneNumberOfflineGeocoder geocoder = PhoneNumberOfflineGeocoder.getInstance();
+
+        Locale locale = context.getResources().getConfiguration().locale;
+        String countryIso = getCurrentCountryIso(context, locale);
+        PhoneNumber pn = null;
+        try {
+            if (VDBG) Log.v(TAG, "parsing '" + number
+                            + "' for countryIso '" + countryIso + "'...");
+            pn = util.parse(number, countryIso);
+            if (VDBG) Log.v(TAG, "- parsed number: " + pn);
+        } catch (NumberParseException e) {
+            Log.w(TAG, "getGeoDescription: NumberParseException for incoming number '"
+                    + Log.pii(number) + "'");
+        }
+
+        if (pn != null) {
+            String description = geocoder.getDescriptionForNumber(pn, locale);
+            if (VDBG) Log.v(TAG, "- got description: '" + description + "'");
+            return description;
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * @return The ISO 3166-1 two letters country code of the country the user
+     *         is in.
+     */
+    private static String getCurrentCountryIso(Context context, Locale locale) {
+        String countryIso = null;
+        CountryDetector detector = (CountryDetector) context.getSystemService(
+                Context.COUNTRY_DETECTOR);
+        if (detector != null) {
+            Country country = detector.detectCountry();
+            if (country != null) {
+                countryIso = country.getCountryIso();
+            } else {
+                Log.e(TAG, new Exception(), "CountryDetector.detectCountry() returned null.");
+            }
+        }
+        if (countryIso == null) {
+            countryIso = locale.getCountry();
+            Log.w(TAG, "No CountryDetector; falling back to countryIso based on locale: "
+                    + countryIso);
+        }
+        return countryIso;
+    }
+
+    /** @hide */
+    protected static String getCurrentCountryIso(Context context) {
+        return getCurrentCountryIso(context, Locale.getDefault());
+    }
+
+    /**
+     * @return a string debug representation of this instance.
+     */
+    @Override
+    public String toString() {
+        // Warning: never check in this file with VERBOSE_DEBUG = true
+        // because that will result in PII in the system log.
+        final boolean VERBOSE_DEBUG = false;
+
+        if (VERBOSE_DEBUG) {
+            return new StringBuilder(384)
+                    .append(super.toString() + " { ")
+                    .append("\nname: " + name)
+                    .append("\nphoneNumber: " + phoneNumber)
+                    .append("\nnormalizedNumber: " + normalizedNumber)
+                    .append("\ngeoDescription: " + geoDescription)
+                    .append("\ncnapName: " + cnapName)
+                    .append("\nnumberPresentation: " + numberPresentation)
+                    .append("\nnamePresentation: " + namePresentation)
+                    .append("\ncontactExits: " + contactExists)
+                    .append("\nphoneLabel: " + phoneLabel)
+                    .append("\nnumberType: " + numberType)
+                    .append("\nnumberLabel: " + numberLabel)
+                    .append("\nphotoResource: " + photoResource)
+                    .append("\ncontactIdOrZero: " + contactIdOrZero)
+                    .append("\nneedUpdate: " + needUpdate)
+                    .append("\ncontactRingtoneUri: " + contactRingtoneUri)
+                    .append("\ncontactDisplayPhotoUri: " + contactDisplayPhotoUri)
+                    .append("\nshouldSendToVoicemail: " + shouldSendToVoicemail)
+                    .append("\ncachedPhoto: " + cachedPhoto)
+                    .append("\nisCachedPhotoCurrent: " + isCachedPhotoCurrent)
+                    .append("\nemergency: " + mIsEmergency)
+                    .append("\nvoicemail " + mIsVoiceMail)
+                    .append("\ncontactExists " + contactExists)
+                    .append("\nuserType " + userType)
+                    .append(" }")
+                    .toString();
+        } else {
+            return new StringBuilder(128)
+                    .append(super.toString() + " { ")
+                    .append("name " + ((name == null) ? "null" : "non-null"))
+                    .append(", phoneNumber " + ((phoneNumber == null) ? "null" : "non-null"))
+                    .append(" }")
+                    .toString();
+        }
+    }
+}