1/*
2 * Copyright (C) 2015 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
17package com.android.contacts.common.preference;
18
19import android.app.AlertDialog;
20import android.content.Context;
21import android.preference.ListPreference;
22import android.util.AttributeSet;
23
24import com.android.contacts.common.model.AccountTypeManager;
25import com.android.contacts.common.model.account.AccountType;
26import com.android.contacts.common.model.account.AccountTypeWithDataSet;
27import com.android.contacts.common.model.account.AccountWithDataSet;
28
29import java.util.HashMap;
30import java.util.List;
31import java.util.Map;
32import java.util.Set;
33
34public class DefaultAccountPreference extends ListPreference {
35    private ContactsPreferences mPreferences;
36    private Map<String, AccountWithDataSet> mAccountMap;
37
38    public DefaultAccountPreference(Context context) {
39        super(context);
40        prepare();
41    }
42
43    public DefaultAccountPreference(Context context, AttributeSet attrs) {
44        super(context, attrs);
45        prepare();
46    }
47
48    private void prepare() {
49        mPreferences = new ContactsPreferences(getContext());
50        mAccountMap = new HashMap<>();
51        final AccountTypeManager accountTypeManager = AccountTypeManager.getInstance(getContext());
52        List<AccountWithDataSet> accounts = accountTypeManager.getAccounts(true);
53        for (AccountWithDataSet account : accounts) {
54            mAccountMap.put(account.name, account);
55        }
56        final Set<String> accountNames = mAccountMap.keySet();
57        final String[] accountNamesArray = accountNames.toArray(new String[accountNames.size()]);
58        setEntries(accountNamesArray);
59        setEntryValues(accountNamesArray);
60        final String defaultAccount = String.valueOf(mPreferences.getDefaultAccount());
61        if (accounts.size() == 1) {
62            setValue(accounts.get(0).name);
63        } else if (accountNames.contains(defaultAccount)) {
64            setValue(defaultAccount);
65        } else {
66            setValue(null);
67        }
68    }
69
70    @Override
71    protected boolean shouldPersist() {
72        return false;   // This preference takes care of its own storage
73    }
74
75    @Override
76    public CharSequence getSummary() {
77        return mPreferences.getDefaultAccount();
78    }
79
80    @Override
81    protected boolean persistString(String value) {
82        if (value == null && mPreferences.getDefaultAccount() == null) {
83            return true;
84        }
85        if (value == null || mPreferences.getDefaultAccount() == null
86                || !value.equals(mPreferences.getDefaultAccount())) {
87            mPreferences.setDefaultAccount(mAccountMap.get(value));
88            notifyChanged();
89        }
90        return true;
91    }
92
93    @Override
94    // UX recommendation is not to show cancel button on such lists.
95    protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
96        super.onPrepareDialogBuilder(builder);
97        builder.setNegativeButton(null, null);
98    }
99}
100