1 /*
2  * Copyright (C) 2017 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.drawer;
18 
19 import android.app.Activity;
20 import android.app.Fragment;
21 import android.app.LoaderManager;
22 import android.content.CursorLoader;
23 import android.content.Loader;
24 import android.database.ContentObserver;
25 import android.database.Cursor;
26 import android.net.Uri;
27 import android.os.Bundle;
28 import android.os.Handler;
29 import android.view.Gravity;
30 import android.view.LayoutInflater;
31 import android.view.View;
32 import android.view.ViewGroup;
33 import android.view.WindowInsets;
34 import android.widget.AdapterView;
35 import android.widget.AdapterView.OnItemClickListener;
36 import android.widget.FrameLayout;
37 import android.widget.ListView;
38 
39 import com.android.contacts.GroupListLoader;
40 import com.android.contacts.R;
41 import com.android.contacts.activities.PeopleActivity.ContactsView;
42 import com.android.contacts.group.GroupListItem;
43 import com.android.contacts.group.GroupUtil;
44 import com.android.contacts.list.ContactListFilter;
45 import com.android.contacts.model.AccountTypeManager;
46 import com.android.contacts.model.account.AccountInfo;
47 import com.android.contacts.model.account.AccountsLoader;
48 import com.android.contacts.model.account.AccountsLoader.AccountsListener;
49 import com.android.contacts.util.AccountFilterUtil;
50 import com.android.contactsbind.ObjectFactory;
51 
52 import java.util.ArrayList;
53 import java.util.Iterator;
54 import java.util.List;
55 
56 public class DrawerFragment extends Fragment implements AccountsListener {
57 
58     private static final int LOADER_GROUPS = 1;
59     private static final int LOADER_ACCOUNTS = 2;
60     private static final int LOADER_FILTERS = 3;
61 
62     private static final String KEY_CONTACTS_VIEW = "contactsView";
63     private static final String KEY_SELECTED_GROUP = "selectedGroup";
64     private static final String KEY_SELECTED_ACCOUNT = "selectedAccount";
65 
66     private WelcomeContentObserver mObserver;
67     private ListView mDrawerListView;
68     private DrawerAdapter mDrawerAdapter;
69     private ContactsView mCurrentContactsView;
70     private DrawerFragmentListener mListener;
71     // Transparent scrim drawn at the top of the drawer fragment.
72     private ScrimDrawable mScrimDrawable;
73 
74     private List<GroupListItem> mGroupListItems = new ArrayList<>();
75     private boolean mGroupsLoaded;
76     private boolean mAccountsLoaded;
77     private boolean mHasGroupWritableAccounts;
78 
79     private final class WelcomeContentObserver extends ContentObserver {
WelcomeContentObserver(Handler handler)80         private WelcomeContentObserver(Handler handler) {
81             super(handler);
82         }
83 
84         @Override
onChange(boolean selfChange)85         public void onChange(boolean selfChange) {
86             mDrawerAdapter.notifyDataSetChanged();
87         }
88     }
89 
90     private final LoaderManager.LoaderCallbacks<List<ContactListFilter>> mFiltersLoaderListener =
91             new LoaderManager.LoaderCallbacks<List<ContactListFilter>> () {
92                 @Override
93                 public Loader<List<ContactListFilter>> onCreateLoader(int id, Bundle args) {
94                     return new AccountFilterUtil.FilterLoader(getActivity());
95                 }
96 
97                 @Override
98                 public void onLoadFinished(
99                         Loader<List<ContactListFilter>> loader, List<ContactListFilter> data) {
100                     if (data != null) {
101                         if (data == null || data.size() < 2) {
102                             mDrawerAdapter.setAccounts(new ArrayList<ContactListFilter>());
103                         } else {
104                             mDrawerAdapter.setAccounts(data);
105                         }
106                     }
107                 }
108 
109                 public void onLoaderReset(Loader<List<ContactListFilter>> loader) {
110                 }
111             };
112 
113     private final LoaderManager.LoaderCallbacks<Cursor> mGroupListLoaderListener =
114             new LoaderManager.LoaderCallbacks<Cursor>() {
115                 @Override
116                 public CursorLoader onCreateLoader(int id, Bundle args) {
117                     return new GroupListLoader(getActivity());
118                 }
119 
120                 @Override
121                 public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
122                     if (data == null) {
123                         return;
124                     }
125                     mGroupListItems.clear();
126                     for (int i = 0; i < data.getCount(); i++) {
127                         if (data.moveToNext()) {
128                             mGroupListItems.add(GroupUtil.getGroupListItem(data, i));
129                         }
130                     }
131                     mGroupsLoaded = true;
132                     notifyIfReady();
133                 }
134 
135                 public void onLoaderReset(Loader<Cursor> loader) {
136                 }
137             };
138 
DrawerFragment()139     public DrawerFragment() {}
140 
141     @Override
onAttach(Activity activity)142     public void onAttach(Activity activity) {
143         super.onAttach(activity);
144         if (activity instanceof DrawerFragmentListener) {
145             mListener = (DrawerFragmentListener) activity;
146         } else {
147             throw new IllegalArgumentException(
148                     "Activity must implement " + DrawerFragmentListener.class.getName());
149         }
150     }
151 
152     @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)153     public View onCreateView(LayoutInflater inflater, ViewGroup container,
154             Bundle savedInstanceState) {
155         final View contentView = inflater.inflate(R.layout.drawer_fragment, null);
156         mDrawerListView = (ListView) contentView.findViewById(R.id.list);
157         mDrawerAdapter = new DrawerAdapter(getActivity());
158         mDrawerAdapter.setSelectedContactsView(mCurrentContactsView);
159         loadGroupsAndFilters();
160         mDrawerListView.setAdapter(mDrawerAdapter);
161         mDrawerListView.setOnItemClickListener(mOnDrawerItemClickListener);
162 
163         if (savedInstanceState != null) {
164             final ContactsView contactsView =
165                     ContactsView.values()[savedInstanceState.getInt(KEY_CONTACTS_VIEW)];
166             setNavigationItemChecked(contactsView);
167             final long groupId = savedInstanceState.getLong(KEY_SELECTED_GROUP);
168             mDrawerAdapter.setSelectedGroupId(groupId);
169             final ContactListFilter filter = savedInstanceState.getParcelable(KEY_SELECTED_ACCOUNT);
170             mDrawerAdapter.setSelectedAccount(filter);
171         } else {
172             setNavigationItemChecked(ContactsView.ALL_CONTACTS);
173         }
174 
175         final FrameLayout root = (FrameLayout) contentView.findViewById(R.id.drawer_fragment_root);
176         root.setFitsSystemWindows(true);
177         root.setOnApplyWindowInsetsListener(new WindowInsetsListener());
178         root.setForegroundGravity(Gravity.TOP | Gravity.FILL_HORIZONTAL);
179 
180         mScrimDrawable = new ScrimDrawable();
181         root.setForeground(mScrimDrawable);
182 
183         return contentView;
184     }
185 
186     @Override
onResume()187     public void onResume() {
188         super.onResume();
189         // todo double check on the new Handler() thing
190         final Uri uri = ObjectFactory.getWelcomeUri();
191         if (uri != null) {
192             mObserver = new WelcomeContentObserver(new Handler());
193             getActivity().getContentResolver().registerContentObserver(uri, false, mObserver);
194         }
195     }
196 
197     @Override
onSaveInstanceState(Bundle outState)198     public void onSaveInstanceState(Bundle outState) {
199         super.onSaveInstanceState(outState);
200         outState.putInt(KEY_CONTACTS_VIEW, mCurrentContactsView.ordinal());
201         outState.putLong(KEY_SELECTED_GROUP, mDrawerAdapter.getSelectedGroupId());
202         outState.putParcelable(KEY_SELECTED_ACCOUNT, mDrawerAdapter.getSelectedAccount());
203     }
204 
205     @Override
onPause()206     public void onPause() {
207         super.onPause();
208         if (mObserver != null) {
209             getActivity().getContentResolver().unregisterContentObserver(mObserver);
210         }
211     }
212 
loadGroupsAndFilters()213     private void loadGroupsAndFilters() {
214         getLoaderManager().initLoader(LOADER_FILTERS, null, mFiltersLoaderListener);
215         AccountsLoader.loadAccounts(this, LOADER_ACCOUNTS,
216                 AccountTypeManager.AccountFilter.GROUPS_WRITABLE);
217         getLoaderManager().initLoader(LOADER_GROUPS, null, mGroupListLoaderListener);
218     }
219 
220     @Override
onDetach()221     public void onDetach() {
222         super.onDetach();
223         mListener = null;
224     }
225 
226     private final OnItemClickListener mOnDrawerItemClickListener = new OnItemClickListener() {
227         @Override
228         public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
229             if (mListener == null) {
230                 return;
231             }
232             final int viewId = v.getId();
233             if (viewId == R.id.nav_all_contacts) {
234                 mListener.onContactsViewSelected(ContactsView.ALL_CONTACTS);
235                 setNavigationItemChecked(ContactsView.ALL_CONTACTS);
236             } else if (viewId == R.id.nav_assistant) {
237                 mListener.onContactsViewSelected(ContactsView.ASSISTANT);
238                 setNavigationItemChecked(ContactsView.ASSISTANT);
239             } else if (viewId == R.id.nav_group) {
240                 final GroupListItem groupListItem = (GroupListItem) v.getTag();
241                 mListener.onGroupViewSelected(groupListItem);
242                 mDrawerAdapter.setSelectedGroupId(groupListItem.getGroupId());
243                 setNavigationItemChecked(ContactsView.GROUP_VIEW);
244             } else if (viewId == R.id.nav_filter) {
245                 final ContactListFilter filter = (ContactListFilter) v.getTag();
246                 mListener.onAccountViewSelected(filter);
247                 mDrawerAdapter.setSelectedAccount(filter);
248                 setNavigationItemChecked(ContactsView.ACCOUNT_VIEW);
249             } else if (viewId == R.id.nav_create_label) {
250                 mListener.onCreateLabelButtonClicked();
251             } else if (viewId == R.id.nav_settings) {
252                 mListener.onOpenSettings();
253             } else if (viewId == R.id.nav_help) {
254                 mListener.onLaunchHelpFeedback();
255             } else {
256                 return;
257             }
258             mListener.onDrawerItemClicked();
259         }
260     };
261 
setNavigationItemChecked(ContactsView contactsView)262     public void setNavigationItemChecked(ContactsView contactsView) {
263         mCurrentContactsView = contactsView;
264         if (mDrawerAdapter != null) {
265             mDrawerAdapter.setSelectedContactsView(contactsView);
266         }
267     }
268 
updateGroupMenu(long groupId)269     public void updateGroupMenu(long groupId) {
270         mDrawerAdapter.setSelectedGroupId(groupId);
271         setNavigationItemChecked(ContactsView.GROUP_VIEW);
272     }
273 
274     @Override
onAccountsLoaded(List<AccountInfo> accounts)275     public void onAccountsLoaded(List<AccountInfo> accounts) {
276         mHasGroupWritableAccounts = !accounts.isEmpty();
277         mAccountsLoaded = true;
278         notifyIfReady();
279     }
280 
notifyIfReady()281     private void notifyIfReady() {
282         if (mAccountsLoaded && mGroupsLoaded) {
283             final Iterator<GroupListItem> iterator = mGroupListItems.iterator();
284             while (iterator.hasNext()) {
285                 final GroupListItem groupListItem = iterator.next();
286                 if (GroupUtil.isEmptyFFCGroup(groupListItem)) {
287                     iterator.remove();
288                 }
289             }
290             mDrawerAdapter.setGroups(mGroupListItems, mHasGroupWritableAccounts);
291         }
292     }
293 
294     public interface DrawerFragmentListener {
onDrawerItemClicked()295         void onDrawerItemClicked();
onContactsViewSelected(ContactsView mode)296         void onContactsViewSelected(ContactsView mode);
onGroupViewSelected(GroupListItem groupListItem)297         void onGroupViewSelected(GroupListItem groupListItem);
onAccountViewSelected(ContactListFilter filter)298         void onAccountViewSelected(ContactListFilter filter);
onCreateLabelButtonClicked()299         void onCreateLabelButtonClicked();
onOpenSettings()300         void onOpenSettings();
onLaunchHelpFeedback()301         void onLaunchHelpFeedback();
302     }
303 
304     private class WindowInsetsListener implements View.OnApplyWindowInsetsListener {
305         @Override
onApplyWindowInsets(View v, WindowInsets insets)306         public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
307             final int insetTop = insets.getSystemWindowInsetTop();
308             // set height of the scrim
309             mScrimDrawable.setIntrinsicHeight(insetTop);
310             return insets;
311         }
312     }
313 }
314