1 /*
2  * Copyright (C) 2011 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License
15  */
16 
17 package android.provider;
18 
19 import android.annotation.SdkConstant;
20 import android.annotation.SdkConstant.SdkConstantType;
21 import android.annotation.TestApi;
22 import android.content.ComponentName;
23 import android.content.ContentResolver;
24 import android.content.ContentValues;
25 import android.content.Context;
26 import android.content.Intent;
27 import android.database.ContentObserver;
28 import android.net.Uri;
29 import android.provider.CallLog.Calls;
30 import android.telecom.PhoneAccount;
31 import android.telecom.PhoneAccountHandle;
32 import android.telecom.Voicemail;
33 
34 import java.util.List;
35 
36 /**
37  * The contract between the voicemail provider and applications. Contains
38  * definitions for the supported URIs and columns.
39  *
40  * <P>The content providers exposes two tables through this interface:
41  * <ul>
42  *   <li> Voicemails table: This stores the actual voicemail records. The
43  *   columns and URIs for accessing this table are defined by the
44  *   {@link Voicemails} class.
45  *   </li>
46  *   <li> Status table: This provides a way for the voicemail source application
47  *   to convey its current state to the system. The columns and URIS for
48  *   accessing this table are defined by the {@link Status} class.
49  *   </li>
50  * </ul>
51  *
52  * <P> The minimum permission needed to access this content provider is
53  * {@link android.Manifest.permission#ADD_VOICEMAIL} or carrier privileges (see
54  * {@link android.telephony.TelephonyManager#hasCarrierPrivileges}).
55  *
56  * <P>Voicemails are inserted by what is called as a "voicemail source"
57  * application, which is responsible for syncing voicemail data between a remote
58  * server and the local voicemail content provider. "voicemail source"
59  * application should always set the {@link #PARAM_KEY_SOURCE_PACKAGE} in the
60  * URI to identify its package.
61  *
62  * <P>In addition to the {@link ContentObserver} notifications the voicemail
63  * provider also generates broadcast intents to notify change for applications
64  * that are not active and therefore cannot listen to ContentObserver
65  * notifications. Broadcast intents with following actions are generated:
66  * <ul>
67  *   <li> {@link #ACTION_NEW_VOICEMAIL} is generated for each new voicemail
68  *   inserted.
69  *   </li>
70  *   <li> {@link Intent#ACTION_PROVIDER_CHANGED} is generated for any change
71  *    made into the database, including new voicemail.
72  *   </li>
73  * </ul>
74  */
75 public class VoicemailContract {
76     /** Not instantiable. */
VoicemailContract()77     private VoicemailContract() {
78     }
79 
80     /** The authority used by the voicemail provider. */
81     public static final String AUTHORITY = "com.android.voicemail";
82     /**
83      * Parameter key used in the URI to specify the voicemail source package name.
84      * <p> This field must be set in all requests that originate from a voicemail source.
85      */
86     public static final String PARAM_KEY_SOURCE_PACKAGE = "source_package";
87 
88     /** Broadcast intent when a new voicemail record is inserted. */
89     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
90     public static final String ACTION_NEW_VOICEMAIL = "android.intent.action.NEW_VOICEMAIL";
91 
92     /**
93      * Broadcast intent to request a voicemail source to fetch voicemail content of a specific
94      * voicemail from the remote server. The voicemail to fetch is specified by the data uri
95      * of the intent.
96      * <p>
97      * All voicemail sources are expected to handle this event. After storing the content
98      * the application should also set {@link Voicemails#HAS_CONTENT} to 1;
99      */
100     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
101     public static final String ACTION_FETCH_VOICEMAIL = "android.intent.action.FETCH_VOICEMAIL";
102 
103     /**
104      * Broadcast intent to request all voicemail sources to perform a sync with the remote server.
105      */
106     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
107     public static final String ACTION_SYNC_VOICEMAIL = "android.provider.action.SYNC_VOICEMAIL";
108 
109     /**
110      * Broadcast intent to inform a new visual voicemail SMS has been received. This intent will
111      * only be delivered to the telephony service.
112      *
113      * @see #EXTRA_VOICEMAIL_SMS
114      * @see #EXTRA_TARGET_PACKAGE
115      *
116      * @hide */
117     @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
118     public static final String ACTION_VOICEMAIL_SMS_RECEIVED =
119             "com.android.internal.provider.action.VOICEMAIL_SMS_RECEIVED";
120 
121     /**
122      * Extra in {@link #ACTION_VOICEMAIL_SMS_RECEIVED} indicating the content of the SMS.
123      *
124      * @hide
125      */
126     public static final String EXTRA_VOICEMAIL_SMS = "android.provider.extra.VOICEMAIL_SMS";
127 
128     /**
129      * Extra in {@link #ACTION_VOICEMAIL_SMS_RECEIVED} indicating the target package to bind {@link
130      * android.telephony.VisualVoicemailService}.
131      *
132      * <p>This extra should be set to android.telephony.VisualVoicemailSmsFilterSettings#packageName
133      * while performing filtering. Since the default dialer might change between the filter sending
134      * it and telephony binding to the service, this ensures the service will not receive SMS
135      * filtered by the previous app.
136      *
137      * @hide
138      */
139     public static final String EXTRA_TARGET_PACKAGE = "android.provider.extra.TARGET_PACAKGE";
140 
141     /**
142      * Extra included in {@link Intent#ACTION_PROVIDER_CHANGED} broadcast intents to indicate if the
143      * receiving package made this change.
144      */
145     public static final String EXTRA_SELF_CHANGE = "com.android.voicemail.extra.SELF_CHANGE";
146 
147     /**
148      * Extra included in {@link #ACTION_SYNC_VOICEMAIL} broadcast intents to indicate which {@link
149      * PhoneAccountHandle} to sync.
150      */
151     public static final String EXTRA_PHONE_ACCOUNT_HANDLE =
152             "android.provider.extra.PHONE_ACCOUNT_HANDLE";
153 
154     /**
155      * Name of the source package field, which must be same across all voicemail related tables.
156      * This is an internal field.
157      * @hide
158      */
159     public static final String SOURCE_PACKAGE_FIELD = "source_package";
160 
161     /** Defines fields exposed through the /voicemail path of this content provider. */
162     public static final class Voicemails implements BaseColumns, OpenableColumns {
163         /** Not instantiable. */
Voicemails()164         private Voicemails() {
165         }
166 
167         /** URI to insert/retrieve voicemails. */
168         public static final Uri CONTENT_URI =
169             Uri.parse("content://" + AUTHORITY + "/voicemail");
170 
171         /** The MIME type for a collection of voicemails. */
172         public static final String DIR_TYPE = "vnd.android.cursor.dir/voicemails";
173 
174         /** The MIME type for a single voicemail. */
175         public static final String ITEM_TYPE = "vnd.android.cursor.item/voicemail";
176 
177         /**
178          * Phone number of the voicemail sender.
179          * <P>Type: TEXT</P>
180          */
181         public static final String NUMBER = Calls.NUMBER;
182         /**
183          * The date the voicemail was sent, in milliseconds since the epoch
184          * <P>Type: INTEGER (long)</P>
185          */
186         public static final String DATE = Calls.DATE;
187         /**
188          * The duration of the voicemail in seconds.
189          * <P>Type: INTEGER (long)</P>
190          */
191         public static final String DURATION = Calls.DURATION;
192         /**
193          * Whether or not the voicemail has been acknowledged (notification sent to the user).
194          * <P>Type: INTEGER (boolean)</P>
195          */
196         public static final String NEW = Calls.NEW;
197         /**
198          * Whether this item has been read or otherwise consumed by the user.
199          * <P>Type: INTEGER (boolean)</P>
200          */
201         public static final String IS_READ = Calls.IS_READ;
202         /**
203          * The mail box state of the voicemail. This field is currently not used by the system.
204          * <P> Possible values: {@link #STATE_INBOX}, {@link #STATE_DELETED},
205          * {@link #STATE_UNDELETED}.
206          * <P>Type: INTEGER</P>
207          * @hide
208          */
209         public static final String STATE = "state";
210         /**
211          * Value of {@link #STATE} when the voicemail is in inbox.
212          * @hide
213          */
214         public static int STATE_INBOX = 0;
215         /**
216          * Value of {@link #STATE} when the voicemail has been marked as deleted.
217          * @hide
218          */
219         public static int STATE_DELETED = 1;
220         /**
221          * Value of {@link #STATE} when the voicemail has marked as undeleted.
222          * @hide
223          */
224         public static int STATE_UNDELETED = 2;
225         /**
226          * Package name of the source application that inserted the voicemail.
227          * <P>Type: TEXT</P>
228          */
229         public static final String SOURCE_PACKAGE = SOURCE_PACKAGE_FIELD;
230         /**
231          * Application-specific data available to the source application that
232          * inserted the voicemail. This is typically used to store the source
233          * specific message id to identify this voicemail on the remote
234          * voicemail server.
235          * <P>Type: TEXT</P>
236          * <P> Note that this is NOT the voicemail media content data.
237          */
238         public static final String SOURCE_DATA = "source_data";
239         /**
240          * Whether the media content for this voicemail is available for
241          * consumption.
242          * <P>Type: INTEGER (boolean)</P>
243          */
244         public static final String HAS_CONTENT = "has_content";
245         /**
246          * MIME type of the media content for the voicemail.
247          * <P>Type: TEXT</P>
248          */
249         public static final String MIME_TYPE = "mime_type";
250         /**
251          * The transcription of the voicemail entry. This will only be populated if the voicemail
252          * entry has a valid transcription.
253          * <P>Type: TEXT</P>
254          */
255         public static final String TRANSCRIPTION = "transcription";
256         /**
257          * The state of the voicemail transcription.
258          * <P> Possible values: {@link #TRANSCRIPTION_NOT_STARTED},
259          * {@link #TRANSCRIPTION_IN_PROGRESS}, {@link #TRANSCRIPTION_FAILED},
260          * {@link #TRANSCRIPTION_AVAILABLE}.
261          * <P>Type: INTEGER</P>
262          * @hide
263          */
264         public static final String TRANSCRIPTION_STATE = "transcription_state";
265         /**
266          * Value of {@link #TRANSCRIPTION_STATE} when the voicemail transcription has not yet
267          * been attempted.
268          * @hide
269          */
270         public static final int TRANSCRIPTION_NOT_STARTED = 0;
271         /**
272          * Value of {@link #TRANSCRIPTION_STATE} when the voicemail transcription has begun
273          * but is not yet complete.
274          * @hide
275          */
276         public static final int TRANSCRIPTION_IN_PROGRESS = 1;
277         /**
278          * Value of {@link #TRANSCRIPTION_STATE} when the voicemail transcription has
279          * been attempted and failed.
280          * @hide
281          */
282         public static final int TRANSCRIPTION_FAILED = 2;
283         /**
284          * Value of {@link #TRANSCRIPTION_STATE} when the voicemail transcription has
285          * completed and the result has been stored in the {@link #TRANSCRIPTION} column.
286          * @hide
287          */
288         public static final int TRANSCRIPTION_AVAILABLE = 3;
289         /**
290          * Path to the media content file. Internal only field.
291          * @hide
292          */
293         @TestApi
294         public static final String _DATA = "_data";
295 
296         // Note: PHONE_ACCOUNT_* constant values are "subscription_*" due to a historic naming
297         // that was encoded into call log databases.
298 
299         /**
300          * The {@link ComponentName} of the {@link PhoneAccount} in string form. The
301          * {@link PhoneAccount} of the voicemail is used to differentiate voicemails from different
302          * sources.
303          * <P>Type: TEXT</P>
304          */
305         public static final String PHONE_ACCOUNT_COMPONENT_NAME = "subscription_component_name";
306 
307         /**
308          * The identifier of a {@link PhoneAccount} that is unique to a specified
309          * {@link ComponentName}. The {@link PhoneAccount} of the voicemail is used to differentiate
310          * voicemails from different sources.
311          * <P>Type: TEXT</P>
312          */
313         public static final String PHONE_ACCOUNT_ID = "subscription_id";
314 
315         /**
316          * Flag used to indicate that local, unsynced changes are present.
317          * Currently, this is used to indicate that the voicemail was read or deleted.
318          * The value will be 1 if dirty is true, 0 if false.
319          *
320          * <p>When a caller updates a voicemail row (either with {@link ContentResolver#update} or
321          * {@link ContentResolver#applyBatch}), and if the {@link ContentValues} doesn't contain
322          * this column, the voicemail provider implicitly sets it to 0 if the calling package is
323          * the {@link #SOURCE_PACKAGE} or to 1 otherwise. To prevent this behavior, explicitly set
324          * {@link #DIRTY_RETAIN} to DIRTY in the {@link ContentValues}.
325          *
326          * <P>Type: INTEGER (boolean)</P>
327          *
328          * @see #DIRTY_RETAIN
329          */
330         public static final String DIRTY = "dirty";
331 
332         /**
333          * Value of {@link #DIRTY} when updating to indicate that the value should not be updated
334          * during this operation.
335          */
336         public static final int DIRTY_RETAIN = -1;
337 
338         /**
339          * Flag used to indicate that the voicemail was deleted but not synced to the server.
340          * A deleted row should be ignored.
341          * The value will be 1 if deleted is true, 0 if false.
342          * <P>Type: INTEGER (boolean)</P>
343          */
344         public static final String DELETED = "deleted";
345 
346         /**
347          * The date the row is last inserted, updated, or marked as deleted, in milliseconds
348          * since the epoch. Read only.
349          * <P>Type: INTEGER (long)</P>
350          */
351         public static final String LAST_MODIFIED = "last_modified";
352 
353         /**
354          * Flag to indicate the voicemail was backed up. The value will be 1 if backed up, 0 if
355          * not.
356          *
357          * <P>Type: INTEGER (boolean)</P>
358          */
359         public static final String BACKED_UP = "backed_up";
360 
361         /**
362          * Flag to indicate the voicemail was restored from a backup. The value will be 1 if
363          * restored, 0 if not.
364          *
365          * <P>Type: INTEGER (boolean)</P>
366          */
367         public static final String RESTORED = "restored";
368 
369         /**
370          * Flag to indicate the voicemail was marked as archived. Archived voicemail should not be
371          * deleted even if it no longer exist on the server. The value will be 1 if archived true, 0
372          * if not.
373          *
374          * <P>Type: INTEGER (boolean)</P>
375          */
376         public static final String ARCHIVED = "archived";
377 
378         /**
379          * Flag to indicate the voicemail is a OMTP voicemail handled by the {@link
380          * android.telephony.VisualVoicemailService}. The UI should only show OMTP voicemails from
381          * the current visual voicemail package. For example, the selection could be
382          * {@code WHERE (IS_OMTP_VOICEMAIL == 0) OR ( IS_OMTP_VOICEMAIL == 1 AND SOURCE_PACKAGE ==
383          * "current.vvm.package")}
384          *
385          * <P>Type: INTEGER (boolean)</P>
386          *
387          * @see android.telephony.TelephonyManager#getVisualVoicemailPackageName
388          */
389         public static final String IS_OMTP_VOICEMAIL = "is_omtp_voicemail";
390 
391         /**
392          * A convenience method to build voicemail URI specific to a source package by appending
393          * {@link VoicemailContract#PARAM_KEY_SOURCE_PACKAGE} param to the base URI.
394          */
buildSourceUri(String packageName)395         public static Uri buildSourceUri(String packageName) {
396             return Voicemails.CONTENT_URI.buildUpon()
397                     .appendQueryParameter(PARAM_KEY_SOURCE_PACKAGE, packageName)
398                     .build();
399         }
400 
401         /**
402          * Inserts a new voicemail into the voicemail content provider.
403          *
404          * @param context The context of the app doing the inserting
405          * @param voicemail Data to be inserted
406          * @return {@link Uri} of the newly inserted {@link Voicemail}
407          *
408          * @hide
409          */
insert(Context context, Voicemail voicemail)410         public static Uri insert(Context context, Voicemail voicemail) {
411             ContentResolver contentResolver = context.getContentResolver();
412             ContentValues contentValues = getContentValues(voicemail);
413             return contentResolver.insert(buildSourceUri(context.getPackageName()), contentValues);
414         }
415 
416         /**
417          * Inserts a list of voicemails into the voicemail content provider.
418          *
419          * @param context The context of the app doing the inserting
420          * @param voicemails Data to be inserted
421          * @return the number of voicemails inserted
422          *
423          * @hide
424          */
insert(Context context, List<Voicemail> voicemails)425         public static int insert(Context context, List<Voicemail> voicemails) {
426             ContentResolver contentResolver = context.getContentResolver();
427             int count = voicemails.size();
428             for (int i = 0; i < count; i++) {
429                 ContentValues contentValues = getContentValues(voicemails.get(i));
430                 contentResolver.insert(buildSourceUri(context.getPackageName()), contentValues);
431             }
432             return count;
433         }
434 
435         /**
436          * Clears all voicemails accessible to this voicemail content provider for the calling
437          * package. By default, a package only has permission to delete voicemails it inserted.
438          *
439          * @return the number of voicemails deleted
440          *
441          * @hide
442          */
deleteAll(Context context)443         public static int deleteAll(Context context) {
444             return context.getContentResolver().delete(
445                     buildSourceUri(context.getPackageName()), "", new String[0]);
446         }
447 
448         /**
449          * Maps structured {@link Voicemail} to {@link ContentValues} in content provider.
450          */
getContentValues(Voicemail voicemail)451         private static ContentValues getContentValues(Voicemail voicemail) {
452             ContentValues contentValues = new ContentValues();
453             contentValues.put(Voicemails.DATE, String.valueOf(voicemail.getTimestampMillis()));
454             contentValues.put(Voicemails.NUMBER, voicemail.getNumber());
455             contentValues.put(Voicemails.DURATION, String.valueOf(voicemail.getDuration()));
456             contentValues.put(Voicemails.SOURCE_PACKAGE, voicemail.getSourcePackage());
457             contentValues.put(Voicemails.SOURCE_DATA, voicemail.getSourceData());
458             contentValues.put(Voicemails.IS_READ, voicemail.isRead() ? 1 : 0);
459 
460             PhoneAccountHandle phoneAccount = voicemail.getPhoneAccount();
461             if (phoneAccount != null) {
462                 contentValues.put(Voicemails.PHONE_ACCOUNT_COMPONENT_NAME,
463                         phoneAccount.getComponentName().flattenToString());
464                 contentValues.put(Voicemails.PHONE_ACCOUNT_ID, phoneAccount.getId());
465             }
466 
467             if (voicemail.getTranscription() != null) {
468                 contentValues.put(Voicemails.TRANSCRIPTION, voicemail.getTranscription());
469             }
470 
471             return contentValues;
472         }
473     }
474 
475     /** Defines fields exposed through the /status path of this content provider. */
476     public static final class Status implements BaseColumns {
477         /** URI to insert/retrieve status of voicemail source. */
478         public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/status");
479         /** The MIME type for a collection of voicemail source statuses. */
480         public static final String DIR_TYPE = "vnd.android.cursor.dir/voicemail.source.status";
481         /** The MIME type for a single voicemail source status entry. */
482         public static final String ITEM_TYPE = "vnd.android.cursor.item/voicemail.source.status";
483 
484         /** Not instantiable. */
Status()485         private Status() {
486         }
487         /**
488          * The package name of the voicemail source. There can only be a one entry per account
489          * per source.
490          * <P>Type: TEXT</P>
491          */
492         public static final String SOURCE_PACKAGE = SOURCE_PACKAGE_FIELD;
493 
494         /**
495          * The type of the source, which determines how to interpret source-specific states.
496          * Typically this will be set to the same string as
497          * {@link android.telephony.CarrierConfigManager#KEY_VVM_TYPE_STRING}. For example,
498          * "vvm_type_omtp".
499          *
500          * <P>Type: TEXT</P>
501          *
502          * @see #CONFIGURATION_STATE
503          * @see #DATA_CHANNEL_STATE
504          * @see #NOTIFICATION_CHANNEL_STATE
505          */
506         public static final String SOURCE_TYPE = "source_type";
507 
508         // Note: Multiple entries may exist for a single source if they are differentiated by the
509         // PHONE_ACCOUNT_* fields.
510 
511         /**
512          * The {@link ComponentName} of the {@link PhoneAccount} in string form. The
513          * {@link PhoneAccount} differentiates voicemail sources from the same package.
514          * <P>Type: TEXT</P>
515          */
516         public static final String PHONE_ACCOUNT_COMPONENT_NAME = "phone_account_component_name";
517 
518         /**
519          * The identifier of a {@link PhoneAccount} that is unique to a specified component. The
520          * {@link PhoneAccount} differentiates voicemail sources from the same package.
521          * <P>Type: TEXT</P>
522          */
523         public static final String PHONE_ACCOUNT_ID = "phone_account_id";
524 
525         /**
526          * The URI to call to invoke source specific voicemail settings screen. On a user request
527          * to setup voicemail an intent with action VIEW with this URI will be fired by the system.
528          * <P>Type: TEXT</P>
529          */
530         public static final String SETTINGS_URI = "settings_uri";
531         /**
532          * The URI to call when the user requests to directly access the voicemail from the remote
533          * server. In case of an IVR voicemail system this is typically set to the the voicemail
534          * number specified using a tel:/ URI.
535          * <P>Type: TEXT</P>
536          */
537         public static final String VOICEMAIL_ACCESS_URI = "voicemail_access_uri";
538         /**
539          * The configuration state of the voicemail source.
540          *
541          * <P>Negative values are reserved to the source for source-specific states, see
542          * {@link #SOURCE_TYPE}
543          *
544          * <P> Possible values:
545          * {@link #CONFIGURATION_STATE_OK},
546          * {@link #CONFIGURATION_STATE_NOT_CONFIGURED},
547          * {@link #CONFIGURATION_STATE_CAN_BE_CONFIGURED}
548          * {@link #CONFIGURATION_STATE_CONFIGURING}
549          * {@link #CONFIGURATION_STATE_FAILED}
550          * {@link #CONFIGURATION_STATE_DISABLED}
551          * <P>Type: INTEGER</P>
552          */
553         public static final String CONFIGURATION_STATE = "configuration_state";
554 
555         /** Value of {@link #CONFIGURATION_STATE} to indicate an all OK configuration status. */
556         public static final int CONFIGURATION_STATE_OK = 0;
557         /**
558          * Value of {@link #CONFIGURATION_STATE} to indicate the visual voicemail is not
559          * yet configured on this device.
560          */
561         public static final int CONFIGURATION_STATE_NOT_CONFIGURED = 1;
562         /**
563          * Value of {@link #CONFIGURATION_STATE} to indicate the visual voicemail is not
564          * yet configured on this device but can be configured by the user.
565          * <p> This state must be used when the source has verified that the current user can be
566          * upgraded to visual voicemail and would like to show a set up invitation message.
567          */
568         public static final int CONFIGURATION_STATE_CAN_BE_CONFIGURED = 2;
569         /**
570          * Value of {@link #CONFIGURATION_STATE} to indicate that visual voicemail still is being
571          * configured.
572          */
573         public static final int CONFIGURATION_STATE_CONFIGURING = 3;
574         /**
575          * Value of {@link #CONFIGURATION_STATE} to indicate that visual voicemail has failed to
576          * be configured.
577          */
578         public static final int CONFIGURATION_STATE_FAILED = 4;
579         /**
580          * Value of {@link #CONFIGURATION_STATE} to indicate that visual voicemail is disabled by
581          * the user.
582          */
583         public static final int CONFIGURATION_STATE_DISABLED = 5;
584         /**
585          * The data channel state of the voicemail source. This the channel through which the source
586          * pulls voicemail data from a remote server.
587          *
588          * <P>Negative values are reserved to the source for source-specific states, see
589          * {@link #SOURCE_TYPE}
590          *
591          * <P> Possible values:
592          * {@link #DATA_CHANNEL_STATE_OK},
593          * {@link #DATA_CHANNEL_STATE_NO_CONNECTION}
594          * </P>
595          * <P>Type: INTEGER</P>
596          */
597         public static final String DATA_CHANNEL_STATE = "data_channel_state";
598 
599         /**
600          *  Value of {@link #DATA_CHANNEL_STATE} to indicate that data channel is working fine.
601          */
602         public static final int DATA_CHANNEL_STATE_OK = 0;
603         /**
604          *  Value of {@link #DATA_CHANNEL_STATE} to indicate that data channel failed to find a
605          *  suitable network to connect to the server.
606          */
607         public static final int DATA_CHANNEL_STATE_NO_CONNECTION = 1;
608         /**
609          *  Value of {@link #DATA_CHANNEL_STATE} to indicate that data channel failed to find a
610          *  suitable network to connect to the server, and the carrier requires using cellular
611          *  data network to connect to the server.
612          */
613         public static final int DATA_CHANNEL_STATE_NO_CONNECTION_CELLULAR_REQUIRED = 2;
614         /**
615          *  Value of {@link #DATA_CHANNEL_STATE} to indicate that data channel received incorrect
616          *  settings or credentials to connect to the server
617          */
618         public static final int DATA_CHANNEL_STATE_BAD_CONFIGURATION = 3;
619         /**
620          *  Value of {@link #DATA_CHANNEL_STATE} to indicate that a error has occurred in the data
621          *  channel while communicating with the server
622          */
623         public static final int DATA_CHANNEL_STATE_COMMUNICATION_ERROR = 4;
624         /**
625          *  Value of {@link #DATA_CHANNEL_STATE} to indicate that the server reported an internal
626          *  error to the data channel.
627          */
628         public static final int DATA_CHANNEL_STATE_SERVER_ERROR = 5;
629         /**
630          *  Value of {@link #DATA_CHANNEL_STATE} to indicate that while there is a suitable network,
631          *  the data channel is unable to establish a connection with the server.
632          */
633         public static final int DATA_CHANNEL_STATE_SERVER_CONNECTION_ERROR = 6;
634 
635         /**
636          * The notification channel state of the voicemail source. This is the channel through which
637          * the source gets notified of new voicemails on the remote server.
638          *
639          * <P>Negative values are reserved to the source for source-specific states, see
640          * {@link #SOURCE_TYPE}
641          *
642          * <P> Possible values:
643          * {@link #NOTIFICATION_CHANNEL_STATE_OK},
644          * {@link #NOTIFICATION_CHANNEL_STATE_NO_CONNECTION},
645          * {@link #NOTIFICATION_CHANNEL_STATE_MESSAGE_WAITING}
646          * </P>
647          * <P>Type: INTEGER</P>
648          */
649         public static final String NOTIFICATION_CHANNEL_STATE = "notification_channel_state";
650 
651         /**
652          * Value of {@link #NOTIFICATION_CHANNEL_STATE} to indicate that the notification channel is
653          * working fine.
654          */
655         public static final int NOTIFICATION_CHANNEL_STATE_OK = 0;
656         /**
657          * Value of {@link #NOTIFICATION_CHANNEL_STATE} to indicate that the notification channel
658          * connection is not working.
659          */
660         public static final int NOTIFICATION_CHANNEL_STATE_NO_CONNECTION = 1;
661         /**
662          * Value of {@link #NOTIFICATION_CHANNEL_STATE} to indicate that there are messages waiting
663          * on the server but the details are not known.
664          * <p> Use this state when the notification can only tell that there are pending messages on
665          * the server but no details of the sender/time etc are known.
666          */
667         public static final int NOTIFICATION_CHANNEL_STATE_MESSAGE_WAITING = 2;
668 
669         /**
670          * Amount of resource that is used by existing voicemail in the visual voicemail inbox,
671          * or {@link #QUOTA_UNAVAILABLE} if the quota has never been updated before. This value is
672          * used to inform the client the situation on the remote server. Unit is not specified.
673          * <P>Type: INTEGER</P>
674          */
675         public static final String QUOTA_OCCUPIED = "quota_occupied";
676 
677         /**
678          * Total resource in the visual voicemail inbox that can be used, or
679          * {@link #QUOTA_UNAVAILABLE} if server either has unlimited quota or does not provide quota
680          * information. This value is used to inform the client the situation on the remote server.
681          * Unit is not specified.
682          * <P>Type: INTEGER</P>
683          */
684         public static final String QUOTA_TOTAL = "quota_total";
685 
686         /**
687          * Value for {@link #QUOTA_OCCUPIED} and {@link #QUOTA_TOTAL} to indicate that no
688          * information is available.
689          */
690         public static final int QUOTA_UNAVAILABLE = -1;
691 
692         /**
693          * A convenience method to build status URI specific to a source package by appending
694          * {@link VoicemailContract#PARAM_KEY_SOURCE_PACKAGE} param to the base URI.
695          */
buildSourceUri(String packageName)696         public static Uri buildSourceUri(String packageName) {
697             return Status.CONTENT_URI.buildUpon()
698                     .appendQueryParameter(PARAM_KEY_SOURCE_PACKAGE, packageName).build();
699         }
700     }
701 }
702