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 
17 package com.android.contacts.common.editor;
18 
19 import android.app.AlertDialog;
20 import android.app.Dialog;
21 import android.app.DialogFragment;
22 import android.app.Fragment;
23 import android.app.FragmentManager;
24 import android.content.DialogInterface;
25 import android.os.Bundle;
26 
27 import com.android.contacts.common.R;
28 import com.android.contacts.common.model.account.AccountWithDataSet;
29 import com.android.contacts.common.util.AccountsListAdapter;
30 import com.android.contacts.common.util.AccountsListAdapter.AccountListFilter;
31 
32 /**
33  * Shows a dialog asking the user which account to chose.
34  *
35  * The result is passed to {@code targetFragment} passed to {@link #show}.
36  */
37 public final class SelectAccountDialogFragment extends DialogFragment {
38     public static final String TAG = "SelectAccountDialogFragment";
39 
40     private static final String KEY_TITLE_RES_ID = "title_res_id";
41     private static final String KEY_LIST_FILTER = "list_filter";
42     private static final String KEY_EXTRA_ARGS = "extra_args";
43 
SelectAccountDialogFragment()44     public SelectAccountDialogFragment() { // All fragments must have a public default constructor.
45     }
46 
47     /**
48      * Show the dialog.
49      *
50      * @param fragmentManager {@link FragmentManager}.
51      * @param targetFragment {@link Fragment} that implements {@link Listener}.
52      * @param titleResourceId resource ID to use as the title.
53      * @param accountListFilter account filter.
54      * @param extraArgs Extra arguments, which will later be passed to
55      *     {@link Listener#onAccountChosen}.  {@code null} will be converted to
56      *     {@link Bundle#EMPTY}.
57      */
show(FragmentManager fragmentManager, F targetFragment, int titleResourceId, AccountListFilter accountListFilter, Bundle extraArgs)58     public static <F extends Fragment & Listener> void show(FragmentManager fragmentManager,
59             F targetFragment, int titleResourceId,
60             AccountListFilter accountListFilter, Bundle extraArgs) {
61         final Bundle args = new Bundle();
62         args.putInt(KEY_TITLE_RES_ID, titleResourceId);
63         args.putSerializable(KEY_LIST_FILTER, accountListFilter);
64         args.putBundle(KEY_EXTRA_ARGS, (extraArgs == null) ? Bundle.EMPTY : extraArgs);
65 
66         final SelectAccountDialogFragment instance = new SelectAccountDialogFragment();
67         instance.setArguments(args);
68         instance.setTargetFragment(targetFragment, 0);
69         instance.show(fragmentManager, null);
70     }
71 
72     @Override
onCreateDialog(Bundle savedInstanceState)73     public Dialog onCreateDialog(Bundle savedInstanceState) {
74         final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
75         final Bundle args = getArguments();
76 
77         final AccountListFilter filter = (AccountListFilter) args.getSerializable(KEY_LIST_FILTER);
78         final AccountsListAdapter accountAdapter = new AccountsListAdapter(builder.getContext(),
79                 filter);
80         accountAdapter.setCustomLayout(R.layout.account_selector_list_item_condensed);
81 
82         final DialogInterface.OnClickListener clickListener =
83                 new DialogInterface.OnClickListener() {
84             @Override
85             public void onClick(DialogInterface dialog, int which) {
86                 dialog.dismiss();
87 
88                 onAccountSelected(accountAdapter.getItem(which));
89             }
90         };
91 
92         builder.setTitle(args.getInt(KEY_TITLE_RES_ID));
93         builder.setSingleChoiceItems(accountAdapter, 0, clickListener);
94         final AlertDialog result = builder.create();
95         return result;
96     }
97 
98     @Override
onCancel(DialogInterface dialog)99     public void onCancel(DialogInterface dialog) {
100         super.onCancel(dialog);
101         final Fragment targetFragment = getTargetFragment();
102         if (targetFragment != null && targetFragment instanceof Listener) {
103             final Listener target = (Listener) targetFragment;
104             target.onAccountSelectorCancelled();
105         }
106     }
107 
108     @Override
onSaveInstanceState(Bundle b)109     public void onSaveInstanceState(Bundle b) {
110         setTargetFragment(null, -1);
111         super.onSaveInstanceState(b);
112     }
113 
114     /**
115      * Calls {@link Listener#onAccountChosen} of {@code targetFragment}.
116      */
onAccountSelected(AccountWithDataSet account)117     private void onAccountSelected(AccountWithDataSet account) {
118         final Fragment targetFragment = getTargetFragment();
119         if (targetFragment != null && targetFragment instanceof Listener) {
120             final Listener target = (Listener) targetFragment;
121             target.onAccountChosen(account, getArguments().getBundle(KEY_EXTRA_ARGS));
122         }
123     }
124 
125     public interface Listener {
onAccountChosen(AccountWithDataSet account, Bundle extraArgs)126         void onAccountChosen(AccountWithDataSet account, Bundle extraArgs);
onAccountSelectorCancelled()127         void onAccountSelectorCancelled();
128     }
129 }
130