| /* |
| * Copyright (C) 2015 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 com.android.messaging.datamodel; |
| |
| import android.content.Context; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.provider.ContactsContract; |
| import android.provider.ContactsContract.Contacts; |
| |
| import com.android.messaging.util.FallbackStrategies; |
| import com.android.messaging.util.FallbackStrategies.Strategy; |
| import com.android.messaging.util.LogUtil; |
| import com.android.messaging.util.OsUtil; |
| |
| /** |
| * Helper for querying frequent (and/or starred) contacts. |
| */ |
| public class FrequentContactsCursorQueryData extends CursorQueryData { |
| private static final String TAG = LogUtil.BUGLE_TAG; |
| |
| private static class FrequentContactsCursorLoader extends BoundCursorLoader { |
| private final Uri mOriginalUri; |
| |
| FrequentContactsCursorLoader(String bindingId, Context context, Uri uri, |
| String[] projection, String selection, String[] selectionArgs, String sortOrder) { |
| super(bindingId, context, uri, projection, selection, selectionArgs, sortOrder); |
| mOriginalUri = uri; |
| } |
| |
| @Override |
| public Cursor loadInBackground() { |
| return FallbackStrategies |
| .startWith(new PrimaryStrequentContactsQueryStrategy()) |
| .thenTry(new FrequentOnlyContactsQueryStrategy()) |
| .thenTry(new PhoneOnlyStrequentContactsQueryStrategy()) |
| .execute(null); |
| } |
| |
| private abstract class StrequentContactsQueryStrategy implements Strategy<Void, Cursor> { |
| @Override |
| public Cursor execute(Void params) throws Exception { |
| final Uri uri = getUri(); |
| if (uri != null) { |
| setUri(uri); |
| } |
| return FrequentContactsCursorLoader.super.loadInBackground(); |
| } |
| protected abstract Uri getUri(); |
| } |
| |
| private class PrimaryStrequentContactsQueryStrategy extends StrequentContactsQueryStrategy { |
| @Override |
| protected Uri getUri() { |
| // Use the original URI requested. |
| return mOriginalUri; |
| } |
| } |
| |
| private class FrequentOnlyContactsQueryStrategy extends StrequentContactsQueryStrategy { |
| @Override |
| protected Uri getUri() { |
| // Some phones have a buggy implementation of the Contacts provider which crashes |
| // when we query for strequent (starred+frequent) contacts (b/17991485). |
| // If this happens, switch to just querying for frequent contacts. |
| return Contacts.CONTENT_FREQUENT_URI; |
| } |
| } |
| |
| private class PhoneOnlyStrequentContactsQueryStrategy extends |
| StrequentContactsQueryStrategy { |
| @Override |
| protected Uri getUri() { |
| // Some 3rd party ROMs have content provider |
| // implementation where invalid SQL queries are returned for regular strequent |
| // queries. Using strequent_phone_only query as a fallback to display only phone |
| // contacts. This is the last-ditch effort; if this fails, we will display an |
| // empty frequent list (b/18354836). |
| final String strequentQueryParam = OsUtil.isAtLeastL() ? |
| ContactsContract.STREQUENT_PHONE_ONLY : "strequent_phone_only"; |
| // TODO: Handle enterprise contacts post M once contacts provider supports it |
| return Contacts.CONTENT_STREQUENT_URI.buildUpon() |
| .appendQueryParameter(strequentQueryParam, "true").build(); |
| } |
| } |
| } |
| |
| public FrequentContactsCursorQueryData(Context context, String[] projection, |
| String selection, String[] selectionArgs, String sortOrder) { |
| // TODO: Handle enterprise contacts post M once contacts provider supports it |
| super(context, Contacts.CONTENT_STREQUENT_URI, projection, selection, selectionArgs, |
| sortOrder); |
| } |
| |
| @Override |
| public BoundCursorLoader createBoundCursorLoader(String bindingId) { |
| return new FrequentContactsCursorLoader(bindingId, mContext, mUri, mProjection, mSelection, |
| mSelectionArgs, mSortOrder); |
| } |
| } |