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      1 /*
      2  * Copyright (C) 2009 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.editor;
     18 
     19 import android.content.Context;
     20 import android.provider.ContactsContract.RawContacts;
     21 
     22 import com.android.contacts.model.AccountTypeManager;
     23 import com.android.contacts.model.RawContactDelta;
     24 import com.android.contacts.model.account.AccountType;
     25 import com.android.contacts.model.account.GoogleAccountType;
     26 
     27 import java.util.Comparator;
     28 
     29 /**
     30  * Compares {@link RawContactDelta}s
     31  */
     32 class RawContactDeltaComparator implements Comparator<RawContactDelta> {
     33 
     34     private Context mContext;
     35 
     36     public RawContactDeltaComparator(Context context) {
     37         mContext = context;
     38     }
     39 
     40     @Override
     41     public int compare(RawContactDelta one, RawContactDelta two) {
     42         // Check direct equality
     43         if (one.equals(two)) {
     44             return 0;
     45         }
     46 
     47         final AccountTypeManager accountTypes = AccountTypeManager.getInstance(mContext);
     48         String accountType1 = one.getValues().getAsString(RawContacts.ACCOUNT_TYPE);
     49         String dataSet1 = one.getValues().getAsString(RawContacts.DATA_SET);
     50         final AccountType type1 = accountTypes.getAccountType(accountType1, dataSet1);
     51         String accountType2 = two.getValues().getAsString(RawContacts.ACCOUNT_TYPE);
     52         String dataSet2 = two.getValues().getAsString(RawContacts.DATA_SET);
     53         final AccountType type2 = accountTypes.getAccountType(accountType2, dataSet2);
     54 
     55         // Check read-only. Sort read/write before read-only.
     56         if (!type1.areContactsWritable() && type2.areContactsWritable()) {
     57             return 1;
     58         } else if (type1.areContactsWritable() && !type2.areContactsWritable()) {
     59             return -1;
     60         }
     61 
     62         // Check account type. Sort Google before non-Google.
     63         boolean skipAccountTypeCheck = false;
     64         boolean isGoogleAccount1 = type1 instanceof GoogleAccountType;
     65         boolean isGoogleAccount2 = type2 instanceof GoogleAccountType;
     66         if (isGoogleAccount1 && !isGoogleAccount2) {
     67             return -1;
     68         } else if (!isGoogleAccount1 && isGoogleAccount2) {
     69             return 1;
     70         } else if (isGoogleAccount1 && isGoogleAccount2) {
     71             skipAccountTypeCheck = true;
     72         }
     73 
     74         int value;
     75         if (!skipAccountTypeCheck) {
     76             // Sort accounts with type before accounts without types.
     77             if (type1.accountType != null && type2.accountType == null) {
     78                 return -1;
     79             } else if (type1.accountType == null && type2.accountType != null) {
     80                 return 1;
     81             }
     82 
     83             if (type1.accountType != null && type2.accountType != null) {
     84                 value = type1.accountType.compareTo(type2.accountType);
     85                 if (value != 0) {
     86                     return value;
     87                 }
     88             }
     89 
     90             // Fall back to data set. Sort accounts with data sets before
     91             // those without.
     92             if (type1.dataSet != null && type2.dataSet == null) {
     93                 return -1;
     94             } else if (type1.dataSet == null && type2.dataSet != null) {
     95                 return 1;
     96             }
     97 
     98             if (type1.dataSet != null && type2.dataSet != null) {
     99                 value = type1.dataSet.compareTo(type2.dataSet);
    100                 if (value != 0) {
    101                     return value;
    102                 }
    103             }
    104         }
    105 
    106         // Check account name
    107         String oneAccount = one.getAccountName();
    108         if (oneAccount == null) {
    109             oneAccount = "";
    110         }
    111         String twoAccount = two.getAccountName();
    112         if (twoAccount == null) {
    113             twoAccount = "";
    114         }
    115         value = oneAccount.compareTo(twoAccount);
    116         if (value != 0) {
    117             return value;
    118         }
    119 
    120         // Both are in the same account, fall back to contact ID
    121         Long oneId = one.getRawContactId();
    122         Long twoId = two.getRawContactId();
    123         if (oneId == null && twoId == null) {
    124             return 0;
    125         } else if (oneId == null) {
    126             return -1;
    127         } else if (twoId == null) {
    128             return 1;
    129         }
    130 
    131         return Long.compare(oneId, twoId);
    132     }
    133 }
    134