1/*
2 * Copyright (C) 2010 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.editor;
18
19import android.app.AlertDialog;
20import android.app.Dialog;
21import android.app.DialogFragment;
22import android.app.Fragment;
23import android.app.FragmentManager;
24import android.content.DialogInterface;
25import android.os.Bundle;
26
27import com.android.contacts.model.account.AccountWithDataSet;
28import com.android.contacts.util.AccountsListAdapter;
29import com.android.contacts.util.AccountsListAdapter.AccountListFilter;
30
31/**
32 * Shows a dialog asking the user which account to chose.
33 *
34 * The result is passed to {@code targetFragment} passed to {@link #show}.
35 */
36public final class SelectAccountDialogFragment extends DialogFragment {
37    public static final String TAG = "SelectAccountDialogFragment";
38
39    private static final String KEY_TITLE_RES_ID = "title_res_id";
40    private static final String KEY_LIST_FILTER = "list_filter";
41    private static final String KEY_EXTRA_ARGS = "extra_args";
42
43    public SelectAccountDialogFragment() { // All fragments must have a public default constructor.
44    }
45
46    /**
47     * Show the dialog.
48     *
49     * @param fragmentManager {@link FragmentManager}.
50     * @param targetFragment {@link Fragment} that implements {@link Listener}.
51     * @param titleResourceId resource ID to use as the title.
52     * @param accountListFilter account filter.
53     * @param extraArgs Extra arguments, which will later be passed to
54     *     {@link Listener#onAccountChosen}.  {@code null} will be converted to
55     *     {@link Bundle#EMPTY}.
56     */
57    public static <F extends Fragment & Listener> void show(FragmentManager fragmentManager,
58            F targetFragment, int titleResourceId,
59            AccountListFilter accountListFilter, Bundle extraArgs) {
60        final Bundle args = new Bundle();
61        args.putInt(KEY_TITLE_RES_ID, titleResourceId);
62        args.putSerializable(KEY_LIST_FILTER, accountListFilter);
63        args.putBundle(KEY_EXTRA_ARGS, (extraArgs == null) ? Bundle.EMPTY : extraArgs);
64
65        final SelectAccountDialogFragment instance = new SelectAccountDialogFragment();
66        instance.setArguments(args);
67        instance.setTargetFragment(targetFragment, 0);
68        instance.show(fragmentManager, null);
69    }
70
71    @Override
72    public Dialog onCreateDialog(Bundle savedInstanceState) {
73        final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
74        final Bundle args = getArguments();
75
76        final AccountListFilter filter = (AccountListFilter) args.getSerializable(KEY_LIST_FILTER);
77        final AccountsListAdapter accountAdapter = new AccountsListAdapter(builder.getContext(),
78                filter);
79
80        final DialogInterface.OnClickListener clickListener =
81                new DialogInterface.OnClickListener() {
82            @Override
83            public void onClick(DialogInterface dialog, int which) {
84                dialog.dismiss();
85
86                onAccountSelected(accountAdapter.getItem(which));
87            }
88        };
89
90        builder.setTitle(args.getInt(KEY_TITLE_RES_ID));
91        builder.setSingleChoiceItems(accountAdapter, 0, clickListener);
92        final AlertDialog result = builder.create();
93        return result;
94    }
95
96    @Override
97    public void onCancel(DialogInterface dialog) {
98        super.onCancel(dialog);
99        final Fragment targetFragment = getTargetFragment();
100        if (targetFragment != null && targetFragment instanceof Listener) {
101            final Listener target = (Listener) targetFragment;
102            target.onAccountSelectorCancelled();
103        }
104    }
105
106    /**
107     * Calls {@link Listener#onAccountChosen} of {@code targetFragment}.
108     */
109    private void onAccountSelected(AccountWithDataSet account) {
110        final Fragment targetFragment = getTargetFragment();
111        if (targetFragment != null && targetFragment instanceof Listener) {
112            final Listener target = (Listener) targetFragment;
113            target.onAccountChosen(account, getArguments().getBundle(KEY_EXTRA_ARGS));
114        }
115    }
116
117    public interface Listener {
118        void onAccountChosen(AccountWithDataSet account, Bundle extraArgs);
119        void onAccountSelectorCancelled();
120    }
121}
122