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 com.android.contacts.common.util;
18 
19 import android.content.ContentResolver;
20 import android.content.ContentUris;
21 import android.net.Uri;
22 import android.provider.Contacts;
23 import android.provider.ContactsContract;
24 import android.provider.ContactsContract.RawContacts;
25 
26 /** Utility methods for the {@link ContactLoader}. */
27 public final class ContactLoaderUtils {
28 
29   /** Static helper, not instantiable. */
ContactLoaderUtils()30   private ContactLoaderUtils() {}
31 
32   /**
33    * Transforms the given Uri and returns a Lookup-Uri that represents the contact. For legacy
34    * contacts, a raw-contact lookup is performed. An {@link IllegalArgumentException} can be thrown
35    * if the URI is null or the authority is not recognized.
36    *
37    * <p>Do not call from the UI thread.
38    */
39   @SuppressWarnings("deprecation")
ensureIsContactUri(final ContentResolver resolver, final Uri uri)40   public static Uri ensureIsContactUri(final ContentResolver resolver, final Uri uri)
41       throws IllegalArgumentException {
42     if (uri == null) {
43       throw new IllegalArgumentException("uri must not be null");
44     }
45 
46     final String authority = uri.getAuthority();
47 
48     // Current Style Uri?
49     if (ContactsContract.AUTHORITY.equals(authority)) {
50       final String type = resolver.getType(uri);
51       // Contact-Uri? Good, return it
52       if (ContactsContract.Contacts.CONTENT_ITEM_TYPE.equals(type)) {
53         return uri;
54       }
55 
56       // RawContact-Uri? Transform it to ContactUri
57       if (RawContacts.CONTENT_ITEM_TYPE.equals(type)) {
58         final long rawContactId = ContentUris.parseId(uri);
59         return RawContacts.getContactLookupUri(
60             resolver, ContentUris.withAppendedId(RawContacts.CONTENT_URI, rawContactId));
61       }
62 
63       // Anything else? We don't know what this is
64       throw new IllegalArgumentException("uri format is unknown");
65     }
66 
67     // Legacy Style? Convert to RawContact
68     final String OBSOLETE_AUTHORITY = Contacts.AUTHORITY;
69     if (OBSOLETE_AUTHORITY.equals(authority)) {
70       // Legacy Format. Convert to RawContact-Uri and then lookup the contact
71       final long rawContactId = ContentUris.parseId(uri);
72       return RawContacts.getContactLookupUri(
73           resolver, ContentUris.withAppendedId(RawContacts.CONTENT_URI, rawContactId));
74     }
75 
76     throw new IllegalArgumentException("uri authority is unknown");
77   }
78 }
79