AccountsChangedReceiver.java revision 914c5591baeb86bf30a5bc28930071442a822d60 
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 */
16package com.android.browser;
17
18import android.accounts.Account;
19import android.accounts.AccountManager;
20import android.content.BroadcastReceiver;
21import android.content.ContentResolver;
22import android.content.Context;
23import android.content.Intent;
24import android.database.Cursor;
25import android.net.Uri;
26import android.provider.BrowserContract;
27import android.provider.BrowserContract.Accounts;
28import android.provider.BrowserContract.Bookmarks;
29import android.text.TextUtils;
30
31public class AccountsChangedReceiver extends BroadcastReceiver {
32
33    private static final String[] PROJECTION = new String[] {
34        Accounts.ACCOUNT_NAME,
35        Accounts.ACCOUNT_TYPE,
36    };
37    private static final String SELECTION = Accounts.ACCOUNT_NAME + " IS NOT NULL";
38    private static final String DELETE_SELECTION = Accounts.ACCOUNT_NAME + "=? AND "
39            + Accounts.ACCOUNT_TYPE + "=?";
40
41    @Override
42    public void onReceive(Context context, Intent intent) {
43        new DeleteRemovedAccounts(context).start();
44    }
45
46    static class DeleteRemovedAccounts extends Thread {
47        Context mContext;
48        public DeleteRemovedAccounts(Context context) {
49            mContext = context.getApplicationContext();
50        }
51
52        @Override
53        public void run() {
54            Account[] accounts = AccountManager.get(mContext).getAccounts();
55            ContentResolver cr = mContext.getContentResolver();
56            Cursor c = cr.query(Accounts.CONTENT_URI, PROJECTION,
57                    SELECTION, null, null);
58            while (c.moveToNext()) {
59                String name = c.getString(0);
60                String type = c.getString(1);
61                if (!contains(accounts, name, type)) {
62                    delete(cr, name, type);
63                }
64            }
65            cr.update(Accounts.CONTENT_URI, null, null, null);
66            c.close();
67        }
68
69        void delete(ContentResolver cr, String name, String type) {
70            // Pretend to be a sync adapter to delete the data and not mark
71            // it for deletion. Without this, the bookmarks will be marked to
72            // be deleted, which will propagate to the server if the account
73            // is added back.
74            Uri uri = Bookmarks.CONTENT_URI.buildUpon()
75                    .appendQueryParameter(BrowserContract.CALLER_IS_SYNCADAPTER, "true")
76                    .build();
77            cr.delete(uri, DELETE_SELECTION, new String[] { name, type });
78        }
79
80        boolean contains(Account[] accounts, String name, String type) {
81            for (Account a : accounts) {
82                if (TextUtils.equals(a.name, name)
83                        && TextUtils.equals(a.type, type)) {
84                    return true;
85                }
86            }
87            return false;
88        }
89    }
90}
91